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Diffstat (limited to 'bundles/org.eclipse.swt/Eclipse SWT/emulated/treetable/org/eclipse/swt/widgets/Tree.java')
| -rw-r--r-- | bundles/org.eclipse.swt/Eclipse SWT/emulated/treetable/org/eclipse/swt/widgets/Tree.java | 4295 |
1 files changed, 0 insertions, 4295 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/emulated/treetable/org/eclipse/swt/widgets/Tree.java b/bundles/org.eclipse.swt/Eclipse SWT/emulated/treetable/org/eclipse/swt/widgets/Tree.java deleted file mode 100644 index 1e65f8c530..0000000000 --- a/bundles/org.eclipse.swt/Eclipse SWT/emulated/treetable/org/eclipse/swt/widgets/Tree.java +++ /dev/null @@ -1,4295 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2000, 2009 IBM Corporation and others. - * All rights reserved. This program and the accompanying materials - * are made available under the terms of the Eclipse Public License v1.0 - * which accompanies this distribution, and is available at - * http://www.eclipse.org/legal/epl-v10.html - * - * Contributors: - * IBM Corporation - initial API and implementation - *******************************************************************************/ -package org.eclipse.swt.widgets; - -import org.eclipse.swt.*; -import org.eclipse.swt.events.*; -import org.eclipse.swt.graphics.*; -import org.eclipse.swt.internal.*; - -/** - * Instances of this class provide a selectable user interface object - * that displays a hierarchy of items and issues notification when an - * item in the hierarchy is selected. - * <p> - * The item children that may be added to instances of this class - * must be of type <code>TreeItem</code>. - * </p><p> - * Style <code>VIRTUAL</code> is used to create a <code>Tree</code> whose - * <code>TreeItem</code>s are to be populated by the client on an on-demand basis - * instead of up-front. This can provide significant performance improvements for - * trees that are very large or for which <code>TreeItem</code> population is - * expensive (for example, retrieving values from an external source). - * </p><p> - * Here is an example of using a <code>Tree</code> with style <code>VIRTUAL</code>: - * <code><pre> - * final Tree tree = new Tree(parent, SWT.VIRTUAL | SWT.BORDER); - * tree.setItemCount(20); - * tree.addListener(SWT.SetData, new Listener() { - * public void handleEvent(Event event) { - * TreeItem item = (TreeItem)event.item; - * TreeItem parentItem = item.getParentItem(); - * String text = null; - * if (parentItem == null) { - * text = "node " + tree.indexOf(item); - * } else { - * text = parentItem.getText() + " - " + parentItem.indexOf(item); - * } - * item.setText(text); - * System.out.println(text); - * item.setItemCount(10); - * } - * }); - * </pre></code> - * </p><p> - * Note that although this class is a subclass of <code>Composite</code>, - * it does not normally make sense to add <code>Control</code> children to - * it, or set a layout on it, unless implementing something like a cell - * editor. - * </p><p> - * <dl> - * <dt><b>Styles:</b></dt> - * <dd>SINGLE, MULTI, CHECK, FULL_SELECTION, VIRTUAL, NO_SCROLL</dd> - * <dt><b>Events:</b></dt> - * <dd>Selection, DefaultSelection, Collapse, Expand, SetData, MeasureItem, EraseItem, PaintItem</dd> - * </dl> - * </p><p> - * Note: Only one of the styles SINGLE and MULTI may be specified. - * </p><p> - * IMPORTANT: This class is <em>not</em> intended to be subclassed. - * </p> - * - * @see <a href="http://www.eclipse.org/swt/snippets/#tree">Tree, TreeItem, TreeColumn snippets</a> - * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: ControlExample</a> - * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> - * @noextend This class is not intended to be subclassed by clients. - */ -public class Tree extends Composite { - Canvas header; - TreeColumn[] columns = new TreeColumn [0]; - TreeColumn[] orderedColumns; - TreeItem[] items = NO_ITEMS; - TreeItem[] availableItems = NO_ITEMS; - TreeItem[] selectedItems = NO_ITEMS; - TreeItem focusItem, anchorItem, insertMarkItem; - TreeItem lastClickedItem; - Event lastSelectionEvent; - int availableItemsCount = 0; - boolean insertMarkPrecedes = false; - boolean linesVisible, ignoreKey, ignoreDispose, customHeightSet; - int topIndex = 0, horizontalOffset = 0; - int fontHeight = 0, imageHeight = 0, itemHeight = 0; - int headerImageHeight = 0, orderedCol0imageWidth = 0; - TreeColumn resizeColumn; - int resizeColumnX = -1; - int drawCount = 0; - boolean inExpand = false; /* for item creation within Expand callback */ - TreeColumn sortColumn; - int sortDirection = SWT.NONE; - - /* column header tooltip */ - Listener toolTipListener; - Shell toolTipShell; - Label toolTipLabel; - - Rectangle arrowBounds, expanderBounds, checkboxBounds, clientArea; - - static final TreeItem[] NO_ITEMS = new TreeItem [0]; - - static final int MARGIN_IMAGE = 3; - static final int MARGIN_CELL = 1; - static final int SIZE_HORIZONTALSCROLL = 5; - static final int TOLLERANCE_COLUMNRESIZE = 2; - static final int WIDTH_HEADER_SHADOW = 2; - static final int WIDTH_CELL_HIGHLIGHT = 1; - static final int [] toolTipEvents = new int[] {SWT.MouseExit, SWT.MouseHover, SWT.MouseMove, SWT.MouseDown}; - static final String ELLIPSIS = "..."; //$NON-NLS-1$ - static final String ID_EXPANDED = "EXPANDED"; //$NON-NLS-1$ - static final String ID_COLLAPSED = "COLLAPSED"; //$NON-NLS-1$ - static final String ID_UNCHECKED = "UNCHECKED"; //$NON-NLS-1$ - static final String ID_GRAYUNCHECKED = "GRAYUNCHECKED"; //$NON-NLS-1$ - static final String ID_CHECKMARK = "CHECKMARK"; //$NON-NLS-1$ - static final String ID_CONNECTOR_COLOR = "CONNECTOR_COLOR"; //$NON-NLS-1$ - static final String ID_ARROWUP = "ARROWUP"; //$NON-NLS-1$ - static final String ID_ARROWDOWN = "ARROWDOWN"; //$NON-NLS-1$ - -// TEMPORARY CODE -boolean hasFocus; - -public boolean isFocusControl() { - return hasFocus; -} - -/** - * Constructs a new instance of this class given its parent - * and a style value describing its behavior and appearance. - * <p> - * The style value is either one of the style constants defined in - * class <code>SWT</code> which is applicable to instances of this - * class, or must be built by <em>bitwise OR</em>'ing together - * (that is, using the <code>int</code> "|" operator) two or more - * of those <code>SWT</code> style constants. The class description - * lists the style constants that are applicable to the class. - * Style bits are also inherited from superclasses. - * </p> - * - * @param parent a composite control which will be the parent of the new instance (cannot be null) - * @param style the style of control to construct - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> - * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> - * </ul> - * - * @see SWT#SINGLE - * @see SWT#MULTI - * @see SWT#CHECK - * @see SWT#FULL_SELECTION - * @see SWT#VIRTUAL - * @see SWT#NO_SCROLL - * @see Widget#checkSubclass - * @see Widget#getStyle - */ -public Tree (Composite parent, int style) { - super (parent, checkStyle (style)); - setForeground (null); /* set foreground and background to chosen default colors */ - setBackground (null); - GC gc = new GC (this); - fontHeight = gc.getFontMetrics ().getHeight (); - gc.dispose (); - itemHeight = fontHeight + (2 * getCellPadding ()); - initImages (display); - expanderBounds = getExpandedImage ().getBounds (); - checkboxBounds = getUncheckedImage ().getBounds (); - arrowBounds = getArrowDownImage ().getBounds (); - clientArea = getClientArea (); - - Listener listener = new Listener () { - public void handleEvent (Event event) { - handleEvents (event); - } - }; - addListener (SWT.Paint, listener); - addListener (SWT.MouseDown, listener); - addListener (SWT.MouseUp, listener); - addListener (SWT.MouseDoubleClick, listener); - addListener (SWT.Dispose, listener); - addListener (SWT.Resize, listener); - addListener (SWT.KeyDown, listener); - addListener (SWT.FocusOut, listener); - addListener (SWT.FocusIn, listener); - addListener (SWT.Traverse, listener); - - header = new Canvas (this, SWT.NO_REDRAW_RESIZE | SWT.NO_FOCUS); - header.setVisible (false); - header.setBounds (0, 0, 0, fontHeight + 2 * getHeaderPadding ()); - header.addListener (SWT.Paint, listener); - header.addListener (SWT.MouseDown, listener); - header.addListener (SWT.MouseUp, listener); - header.addListener (SWT.MouseHover, listener); - header.addListener (SWT.MouseDoubleClick, listener); - header.addListener (SWT.MouseMove, listener); - header.addListener (SWT.MouseExit, listener); - header.addListener (SWT.MenuDetect, listener); - - toolTipListener = new Listener () { - public void handleEvent (Event event) { - switch (event.type) { - case SWT.MouseHover: - case SWT.MouseMove: - if (headerUpdateToolTip (event.x)) break; - // FALL THROUGH - case SWT.MouseExit: - case SWT.MouseDown: - headerHideToolTip (); - break; - } - } - }; - - ScrollBar hBar = getHorizontalBar (); - if (hBar != null) { - hBar.setValues (0, 0, 1, 1, 1, 1); - hBar.setVisible (false); - hBar.addListener (SWT.Selection, listener); - } - ScrollBar vBar = getVerticalBar (); - if (vBar != null) { - vBar.setValues (0, 0, 1, 1, 1, 1); - vBar.setVisible (false); - vBar.addListener (SWT.Selection, listener); - } -} -/** - * Adds the listener to the collection of listeners who will - * be notified when the user changes the receiver's selection, by sending - * it one of the messages defined in the <code>SelectionListener</code> - * interface. - * <p> - * When <code>widgetSelected</code> is called, the item field of the event object is valid. - * If the receiver has the <code>SWT.CHECK</code> style and the check selection changes, - * the event object detail field contains the value <code>SWT.CHECK</code>. - * <code>widgetDefaultSelected</code> is typically called when an item is double-clicked. - * The item field of the event object is valid for default selection, but the detail field is not used. - * </p> - * - * @param listener the listener which should be notified when the user changes the receiver's selection - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @see SelectionListener - * @see #removeSelectionListener - * @see SelectionEvent - */ -public void addSelectionListener (SelectionListener listener) { - checkWidget (); - if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); - TypedListener typedListener = new TypedListener (listener); - addListener (SWT.Selection, typedListener); - addListener (SWT.DefaultSelection, typedListener); -} -/** - * Adds the listener to the collection of listeners who will - * be notified when an item in the receiver is expanded or collapsed - * by sending it one of the messages defined in the <code>TreeListener</code> - * interface. - * - * @param listener the listener which should be notified - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @see TreeListener - * @see #removeTreeListener - */ -public void addTreeListener (TreeListener listener) { - checkWidget (); - if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); - TypedListener typedListener = new TypedListener (listener); - addListener (SWT.Expand, typedListener); - addListener (SWT.Collapse, typedListener); -} -boolean checkData (TreeItem item, boolean redraw) { - if (item.cached) return true; - if ((style & SWT.VIRTUAL) != 0) { - item.cached = true; - Event event = new Event (); - TreeItem parentItem = item.getParentItem (); - event.item = item; - event.index = parentItem == null ? indexOf (item) : parentItem.indexOf (item); - sendEvent (SWT.SetData, event); - if (isDisposed () || item.isDisposed ()) return false; - if (redraw) redrawItem (item.availableIndex, false); - } - return true; -} -static int checkStyle (int style) { - /* - * Feature in Windows. Even when WS_HSCROLL or - * WS_VSCROLL is not specified, Windows creates - * trees and tables with scroll bars. The fix - * is to set H_SCROLL and V_SCROLL. - * - * NOTE: This code appears on all platforms so that - * applications have consistent scroll bar behavior. - */ - if ((style & SWT.NO_SCROLL) == 0) { - style |= SWT.H_SCROLL | SWT.V_SCROLL; - } - style |= SWT.NO_REDRAW_RESIZE | SWT.NO_BACKGROUND | SWT.DOUBLE_BUFFERED; - //TEMPORARY CODE - style |= SWT.FULL_SELECTION; - return checkBits (style, SWT.SINGLE, SWT.MULTI, 0, 0, 0, 0); -} -protected void checkSubclass () { - if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS); -} -/** - * Clears the item at the given zero-relative index in the receiver. - * The text, icon and other attributes of the item are set to the default - * value. If the tree was created with the <code>SWT.VIRTUAL</code> style, - * these attributes are requested again as needed. - * - * @param index the index of the item to clear - * @param all <code>true</code> if all child items of the indexed item should be - * cleared recursively, and <code>false</code> otherwise - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list minus 1 (inclusive)</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @see SWT#VIRTUAL - * @see SWT#SetData - * - * @since 3.2 - */ -public void clear (int index, boolean recursive) { - checkWidget (); - if (!(0 <= index && index < items.length)) error (SWT.ERROR_INVALID_RANGE); - TreeItem item = items [index]; - - /* if there are no columns then the horizontal scrollbar may need adjusting */ - TreeItem[] availableDescendents = null; - int oldRightX = 0; - if (columns.length == 0) { - if (recursive) { - availableDescendents = item.computeAvailableDescendents (); - for (int i = 0; i < availableDescendents.length; i++) { - Rectangle bounds = availableDescendents [i].getBounds (false); - oldRightX = Math.max (oldRightX, bounds.x + bounds.width); - } - } else { - Rectangle bounds = item.getBounds (false); - oldRightX = bounds.x + bounds.width; - } - } - - /* clear the item(s) */ - item.clear (); - if (recursive) { - item.clearAll (true, false); - } - - /* adjust the horizontal scrollbar if needed */ - if (columns.length == 0) { - int newRightX = 0; - if (recursive) { - for (int i = 0; i < availableDescendents.length; i++) { - Rectangle bounds = availableDescendents [i].getBounds (false); - newRightX = Math.max (newRightX, bounds.x + bounds.width); - } - } else { - Rectangle bounds = item.getBounds (false); - newRightX = bounds.x + bounds.width; - } - updateHorizontalBar (newRightX, newRightX - oldRightX); - } - - /* redraw the item(s) */ - if (recursive && item.expanded) { - int descendentCount = availableDescendents == null ? - item.computeAvailableDescendentCount () : - availableDescendents.length; - redrawItems (item.availableIndex, item.availableIndex + descendentCount - 1, false); - } else { - redrawItem (item.availableIndex, false); - } -} -/** - * Clears all the items in the receiver. The text, icon and other - * attributes of the items are set to their default values. If the - * tree was created with the <code>SWT.VIRTUAL</code> style, these - * attributes are requested again as needed. - * - * @param all <code>true</code> if all child items should be cleared - * recursively, and <code>false</code> otherwise - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @see SWT#VIRTUAL - * @see SWT#SetData - * - * @since 3.2 - */ -public void clearAll (boolean recursive) { - checkWidget (); - if (items.length == 0) return; - - /* if there are no columns then the horizontal scrollbar may need adjusting */ - int oldRightX = 0; - if (columns.length == 0 && !recursive) { - for (int i = 0; i < items.length; i++) { - Rectangle bounds = items [i].getBounds (false); - oldRightX = Math.max (oldRightX, bounds.x + bounds.width); - } - } - - /* clear the item(s) */ - for (int i = 0; i < items.length; i++) { - items [i].clear (); - if (recursive) items [i].clearAll (true, false); - } - - /* adjust the horizontal scrollbar if needed */ - if (columns.length == 0) { - if (recursive) { - updateHorizontalBar (); /* recompute from scratch */ - } else { - /* - * All cleared root items will have the same x and width values now, - * so just measure the first one as a sample. - */ - Rectangle bounds = items [0].getBounds (false); - int newRightX = bounds.x + bounds.width; - updateHorizontalBar (newRightX, newRightX - oldRightX); - } - } - - /* redraw the item(s) */ - if (recursive) { - redrawItems (0, availableItemsCount - 1, false); - } else { - for (int i = 0; i < items.length; i++) { - redrawItem (items [i].availableIndex, false); - } - } -} -/* - * Returns the ORDERED index of the column that the specified x falls within, - * or -1 if the x lies to the right of the last column. - */ -int computeColumnIntersect (int x, int startColumn) { - TreeColumn[] orderedColumns = getOrderedColumns (); - if (orderedColumns.length - 1 < startColumn) return -1; - int rightX = orderedColumns [startColumn].getX (); - for (int i = startColumn; i < orderedColumns.length; i++) { - rightX += orderedColumns [i].width; - if (x < rightX) return i; - } - return -1; -} -public Point computeSize (int wHint, int hHint, boolean changed) { - checkWidget (); - int width = 0, height = 0; - if (wHint != SWT.DEFAULT) { - width = wHint; - } else { - if (columns.length == 0) { - for (int i = 0; i < availableItemsCount; i++) { - Rectangle itemBounds = availableItems [i].getBounds (false); - width = Math.max (width, itemBounds.x + itemBounds.width); - } - } else { - TreeColumn[] orderedColumns = getOrderedColumns (); - TreeColumn lastColumn = orderedColumns [orderedColumns.length - 1]; - width = lastColumn.getX () + lastColumn.width; - } - } - if (hHint != SWT.DEFAULT) { - height = hHint; - } else { - height = getHeaderHeight () + availableItemsCount * itemHeight; - } - Rectangle result = computeTrim (0, 0, width, height); - return new Point (result.width, result.height); -} -void createItem (TreeColumn column, int index) { - TreeColumn[] newColumns = new TreeColumn [columns.length + 1]; - System.arraycopy (columns, 0, newColumns, 0, index); - newColumns [index] = column; - System.arraycopy (columns, index, newColumns, index + 1, columns.length - index); - columns = newColumns; - - if (orderedColumns != null) { - int insertIndex = 0; - if (index > 0) { - insertIndex = columns [index - 1].getOrderIndex () + 1; - } - TreeColumn[] newOrderedColumns = new TreeColumn [orderedColumns.length + 1]; - System.arraycopy (orderedColumns, 0, newOrderedColumns, 0, insertIndex); - newOrderedColumns [insertIndex] = column; - System.arraycopy ( - orderedColumns, - insertIndex, - newOrderedColumns, - insertIndex + 1, - orderedColumns.length - insertIndex); - orderedColumns = newOrderedColumns; - } - - if (columns.length == 1) { - column.itemImageWidth = orderedCol0imageWidth; - } else { - if (column.getOrderIndex () == 0) orderedCol0imageWidth = 0; - } - - /* allow all items to update their internal structures accordingly */ - for (int i = 0; i < items.length; i++) { - items [i].addColumn (column); - } - - /* existing items become hidden when going from 0 to 1 column (0 width) */ - if (columns.length == 1 && availableItemsCount > 0) { - redrawFromItemDownwards (topIndex); - } else { - /* checkboxes become hidden when creating a column with index == ordered index == 0 (0 width) */ - if (availableItemsCount > 0 && (style & SWT.CHECK) != 0 && index == 0 && column.getOrderIndex () == 0) { - redrawFromItemDownwards (topIndex); - } - } -} -void createItem (TreeItem item, int index) { - TreeItem[] newItems = new TreeItem [items.length + 1]; - System.arraycopy (items, 0, newItems, 0, index); - newItems [index] = item; - System.arraycopy (items, index, newItems, index + 1, items.length - index); - items = newItems; - - /* determine the item's availability index */ - int startIndex; - if (index == items.length - 1) { - startIndex = availableItemsCount; /* last item */ - } else { - startIndex = items [index + 1].availableIndex; - } - - if (availableItemsCount == availableItems.length) { - int grow = drawCount <= 0 ? 4 : Math.max (4, availableItems.length * 3 / 2); - TreeItem[] newAvailableItems = new TreeItem [availableItems.length + grow]; - System.arraycopy (availableItems, 0, newAvailableItems, 0, availableItems.length); - availableItems = newAvailableItems; - } - if (startIndex != availableItemsCount) { - /* new item is not at end of list, so shift other items right to create space for it */ - System.arraycopy ( - availableItems, - startIndex, - availableItems, - startIndex + 1, - availableItemsCount - startIndex); - } - availableItems [startIndex] = item; - availableItemsCount++; - - /* update the availableIndex for items bumped down by this new item */ - for (int i = startIndex; i < availableItemsCount; i++) { - availableItems [i].availableIndex = i; - } - - /* update scrollbars */ - updateVerticalBar (); - Rectangle bounds = item.getBounds (false); - int rightX = bounds.x + bounds.width; - updateHorizontalBar (rightX, rightX); - /* - * If new item is above viewport then adjust topIndex and the vertical - * scrollbar so that the current viewport items will not change. - */ - if (item.availableIndex < topIndex) { - topIndex++; - ScrollBar vBar = getVerticalBar (); - if (vBar != null) vBar.setSelection (topIndex); - return; - } - /* - * If this is the first item and the receiver has focus then its boundary - * focus ring must be removed. - */ - if (availableItemsCount == 1 && isFocusControl ()) { - focusItem = item; - redraw (); - return; - } - int redrawIndex = index; - if (redrawIndex > 0 && item.isLastChild ()) redrawIndex--; - redrawFromItemDownwards (items [redrawIndex].availableIndex); -} -/** - * Deselects an item in the receiver. If the item was already - * deselected, it remains deselected. - * - * @param item the item to be deselected - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if the item is null</li> - * <li>ERROR_INVALID_ARGUMENT - if the item has been disposed</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @since 3.4 - */ -public void deselect (TreeItem item) { - checkWidget (); - if (item == null) error (SWT.ERROR_NULL_ARGUMENT); - if (item.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT); - deselectItem (item); - redrawItem (item.availableIndex, true); -} -/** - * Deselects all selected items in the receiver. - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - */ -public void deselectAll () { - checkWidget (); - TreeItem[] oldSelection = selectedItems; - selectedItems = NO_ITEMS; - for (int i = 0; i < oldSelection.length; i++) { - redrawItem (oldSelection [i].availableIndex, true); - } -} -void deselectItem (TreeItem item) { - int index = getSelectionIndex (item); - if (index == -1) return; - TreeItem[] newSelectedItems = new TreeItem [selectedItems.length - 1]; - System.arraycopy (selectedItems, 0, newSelectedItems, 0, index); - System.arraycopy ( - selectedItems, - index + 1, - newSelectedItems, - index, - newSelectedItems.length - index); - selectedItems = newSelectedItems; -} -void destroyItem (TreeColumn column) { - headerHideToolTip (); - int index = column.getIndex (); - int orderedIndex = column.getOrderIndex (); - - TreeColumn[] newColumns = new TreeColumn [columns.length - 1]; - System.arraycopy (columns, 0, newColumns, 0, index); - System.arraycopy (columns, index + 1, newColumns, index, newColumns.length - index); - columns = newColumns; - - if (orderedColumns != null) { - if (columns.length < 2) { - orderedColumns = null; - } else { - int removeIndex = column.getOrderIndex (); - TreeColumn[] newOrderedColumns = new TreeColumn [orderedColumns.length - 1]; - System.arraycopy (orderedColumns, 0, newOrderedColumns, 0, removeIndex); - System.arraycopy ( - orderedColumns, - removeIndex + 1, - newOrderedColumns, - removeIndex, - newOrderedColumns.length - removeIndex); - orderedColumns = newOrderedColumns; - } - } - - if (orderedIndex == 0 && columns.length > 0) { - orderedCol0imageWidth = columns [getColumnOrder ()[0]].itemImageWidth; - } - - /* allow all items to update their internal structures accordingly */ - for (int i = 0; i < items.length; i++) { - items [i].removeColumn (column, index, orderedIndex); - } - - /* update horizontal scrollbar */ - int lastColumnIndex = columns.length - 1; - if (lastColumnIndex < 0) { /* no more columns */ - updateHorizontalBar (); - } else { - int newWidth = 0; - for (int i = 0; i < columns.length; i++) { - newWidth += columns [i].width; - } - ScrollBar hBar = getHorizontalBar (); - if (hBar != null) { - hBar.setMaximum (newWidth); - hBar.setVisible (clientArea.width < newWidth); - int selection = hBar.getSelection (); - if (selection != horizontalOffset) { - horizontalOffset = selection; - redraw (); - if (header.isVisible () && drawCount <= 0) header.redraw (); - } - } - } - TreeColumn[] orderedColumns = getOrderedColumns (); - for (int i = orderedIndex; i < orderedColumns.length; i++) { - if (!orderedColumns [i].isDisposed ()) { - orderedColumns [i].sendEvent (SWT.Move); - } - } - - if (sortColumn == column) { - sortColumn = null; - } -} -/* - * Allows the Tree to update internal structures it has that may contain the - * item being destroyed. The argument is not necessarily a root-level item. - */ -void destroyItem (TreeItem item) { - if (item == focusItem) reassignFocus (); - - /* availableItems array */ - int availableIndex = item.availableIndex; - if (availableIndex != -1) { - Rectangle bounds = item.getBounds (false); - int rightX = bounds.x + bounds.width; - - if (availableIndex != availableItemsCount - 1) { - /* item is not at end of available items list, so must shift items left to reclaim its slot */ - System.arraycopy ( - availableItems, - availableIndex + 1, - availableItems, - availableIndex, - availableItemsCount - availableIndex - 1); - availableItems [availableItemsCount - 1] = null; - } else { - availableItems [availableIndex] = null; /* last item, so no array copy needed */ - } - availableItemsCount--; - - if (drawCount <= 0 && availableItems.length - availableItemsCount == 4) { - /* shrink the available items array */ - TreeItem[] newAvailableItems = new TreeItem [availableItemsCount]; - System.arraycopy (availableItems, 0, newAvailableItems, 0, newAvailableItems.length); - availableItems = newAvailableItems; - } - - /* update the availableIndex on affected items */ - for (int i = availableIndex; i < availableItemsCount; i++) { - availableItems [i].availableIndex = i; - } - item.availableIndex = -1; - int oldTopIndex = topIndex; - updateVerticalBar (); - updateHorizontalBar (0, -rightX); - /* - * If destroyed item is above viewport then adjust topIndex and the vertical - * scrollbar so that the current viewport items will not change. - */ - if (availableIndex < topIndex) { - topIndex = oldTopIndex - 1; - ScrollBar vBar = getVerticalBar (); - if (vBar != null) vBar.setSelection (topIndex); - } - } - /* selectedItems array */ - if (item.isSelected ()) { - int selectionIndex = getSelectionIndex (item); - TreeItem[] newSelectedItems = new TreeItem [selectedItems.length - 1]; - System.arraycopy (selectedItems, 0, newSelectedItems, 0, selectionIndex); - System.arraycopy ( - selectedItems, - selectionIndex + 1, - newSelectedItems, - selectionIndex, - newSelectedItems.length - selectionIndex); - selectedItems = newSelectedItems; - } - /* root-level items array */ - if (item.depth == 0) { - int index = item.getIndex (); - TreeItem[] newItems = new TreeItem [items.length - 1]; - System.arraycopy (items, 0, newItems, 0, index); - System.arraycopy (items, index + 1, newItems, index, newItems.length - index); - items = newItems; - } - if (item == anchorItem) anchorItem = null; - if (item == insertMarkItem) insertMarkItem = null; - if (item == lastClickedItem) lastClickedItem = null; - /* - * If this was the last item and the receiver has focus then its boundary - * focus ring must be redrawn. - */ - if (availableItemsCount == 0 && isFocusControl ()) { - redraw (); - return; - } -} -Image getArrowDownImage () { - return (Image) display.getData (ID_ARROWDOWN); -} -Image getArrowUpImage () { - return (Image) display.getData (ID_ARROWUP); -} -int getCellPadding () { - return MARGIN_CELL + WIDTH_CELL_HIGHLIGHT; -} -Image getCheckmarkImage () { - return (Image) display.getData (ID_CHECKMARK); -} -public Control[] getChildren () { - checkWidget (); - Control[] controls = _getChildren (); - if (header == null) return controls; - Control[] result = new Control [controls.length - 1]; - /* remove the Header from the returned set of children */ - int index = 0; - for (int i = 0; i < controls.length; i++) { - if (controls [i] != header) { - result [index++] = controls [i]; - } - } - return result; -} -Image getCollapsedImage () { - return (Image) display.getData (ID_COLLAPSED); -} -/** - * Returns the column at the given, zero-relative index in the - * receiver. Throws an exception if the index is out of range. - * Columns are returned in the order that they were created. - * If no <code>TreeColumn</code>s were created by the programmer, - * this method will throw <code>ERROR_INVALID_RANGE</code> despite - * the fact that a single column of data may be visible in the tree. - * This occurs when the programmer uses the tree like a list, adding - * items but never creating a column. - * - * @param index the index of the column to return - * @return the column at the given index - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list minus 1 (inclusive)</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @see Tree#getColumnOrder() - * @see Tree#setColumnOrder(int[]) - * @see TreeColumn#getMoveable() - * @see TreeColumn#setMoveable(boolean) - * @see SWT#Move - * - * @since 3.1 - */ -public TreeColumn getColumn (int index) { - checkWidget (); - if (!(0 <= index && index < columns.length)) error (SWT.ERROR_INVALID_RANGE); - return columns [index]; -} -/** - * Returns the number of columns contained in the receiver. - * If no <code>TreeColumn</code>s were created by the programmer, - * this value is zero, despite the fact that visually, one column - * of items may be visible. This occurs when the programmer uses - * the tree like a list, adding items but never creating a column. - * - * @return the number of columns - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @since 3.1 - */ -public int getColumnCount () { - checkWidget (); - return columns.length; -} -/** - * Returns an array of zero-relative integers that map - * the creation order of the receiver's items to the - * order in which they are currently being displayed. - * <p> - * Specifically, the indices of the returned array represent - * the current visual order of the items, and the contents - * of the array represent the creation order of the items. - * </p><p> - * Note: This is not the actual structure used by the receiver - * to maintain its list of items, so modifying the array will - * not affect the receiver. - * </p> - * - * @return the current visual order of the receiver's items - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @see Tree#setColumnOrder(int[]) - * @see TreeColumn#getMoveable() - * @see TreeColumn#setMoveable(boolean) - * @see SWT#Move - * - * @since 3.2 - */ -public int[] getColumnOrder () { - checkWidget (); - int[] result = new int [columns.length]; - if (orderedColumns != null) { - for (int i = 0; i < result.length; i++) { - result [i] = orderedColumns [i].getIndex (); - } - } else { - for (int i = 0; i < columns.length; i++) { - result [i] = i; - } - } - return result; -} -/** - * Returns an array of <code>TreeColumn</code>s which are the - * columns in the receiver. Columns are returned in the order - * that they were created. If no <code>TreeColumn</code>s were - * created by the programmer, the array is empty, despite the fact - * that visually, one column of items may be visible. This occurs - * when the programmer uses the tree like a list, adding items but - * never creating a column. - * <p> - * Note: This is not the actual structure used by the receiver - * to maintain its list of items, so modifying the array will - * not affect the receiver. - * </p> - * - * @return the items in the receiver - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @see Tree#getColumnOrder() - * @see Tree#setColumnOrder(int[]) - * @see TreeColumn#getMoveable() - * @see TreeColumn#setMoveable(boolean) - * @see SWT#Move - * - * @since 3.1 - */ -public TreeColumn[] getColumns () { - checkWidget (); - TreeColumn[] result = new TreeColumn [columns.length]; - System.arraycopy (columns, 0, result, 0, columns.length); - return result; -} -Color getConnectorColor () { - return (Color) display.getData (ID_CONNECTOR_COLOR); -} -Image getExpandedImage () { - return (Image) display.getData (ID_EXPANDED); -} -Image getGrayUncheckedImage () { - return (Image) display.getData (ID_GRAYUNCHECKED); -} -/** - * Returns the width in pixels of a grid line. - * - * @return the width of a grid line in pixels - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @since 3.1 - */ -public int getGridLineWidth () { - checkWidget (); - return 1; -} -/** - * Returns the height of the receiver's header - * - * @return the height of the header or zero if the header is not visible - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @since 3.1 - */ -public int getHeaderHeight () { - checkWidget (); - if (!header.getVisible ()) return 0; - return header.getSize ().y; -} -int getHeaderPadding () { - return MARGIN_CELL + WIDTH_HEADER_SHADOW; -} -/** - * Returns <code>true</code> if the receiver's header is visible, - * and <code>false</code> otherwise. - * <p> - * If one of the receiver's ancestors is not visible or some - * other condition makes the receiver not visible, this method - * may still indicate that it is considered visible even though - * it may not actually be showing. - * </p> - * - * @return the receiver's header's visibility state - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @since 3.1 - */ -public boolean getHeaderVisible () { - checkWidget (); - return header.getVisible (); -} -/** - * Returns the item at the given point in the receiver - * or null if no such item exists. The point is in the - * coordinate system of the receiver. - * <p> - * The item that is returned represents an item that could be selected by the user. - * For example, if selection only occurs in items in the first column, then null is - * returned if the point is outside of the item. - * Note that the SWT.FULL_SELECTION style hint, which specifies the selection policy, - * determines the extent of the selection. - * </p> - * - * @param point the point used to locate the item - * @return the item at the given point, or null if the point is not in a selectable item - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if the point is null</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - */ -public TreeItem getItem (Point point) { - checkWidget (); - if (point == null) error (SWT.ERROR_NULL_ARGUMENT); - int index = (point.y - getHeaderHeight ()) / itemHeight + topIndex; - if (!(0 <= index && index < availableItemsCount)) return null; /* below the last item */ - TreeItem result = availableItems [index]; - if (!result.getHitBounds ().contains (point)) return null; /* considers the x value */ - return result; -} -/** - * Returns the item at the given, zero-relative index in the - * receiver. Throws an exception if the index is out of range. - * - * @param index the index of the item to return - * @return the item at the given index - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list minus 1 (inclusive)</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @since 3.1 - */ -public TreeItem getItem (int index) { - checkWidget (); - if (!(0 <= index && index < items.length)) error (SWT.ERROR_INVALID_RANGE); - return items [index]; -} -/** - * Returns the number of items contained in the receiver - * that are direct item children of the receiver. The - * number that is returned is the number of roots in the - * tree. - * - * @return the number of items - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - */ -public int getItemCount () { - checkWidget (); - return items.length; -} -/** - * Returns the height of the area which would be used to - * display <em>one</em> of the items in the tree. - * - * @return the height of one item - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - */ -public int getItemHeight () { - checkWidget (); - return itemHeight; -} -/** - * Returns a (possibly empty) array of items contained in the - * receiver that are direct item children of the receiver. These - * are the roots of the tree. - * <p> - * Note: This is not the actual structure used by the receiver - * to maintain its list of items, so modifying the array will - * not affect the receiver. - * </p> - * - * @return the items - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - */ -public TreeItem[] getItems () { - checkWidget (); - TreeItem[] result = new TreeItem [items.length]; - System.arraycopy (items, 0, result, 0, items.length); - return result; -} -/* - * Returns the current y-coordinate that the specified item should have. - */ -int getItemY (TreeItem item) { - int index = item.availableIndex; - if (index == -1) return -1; - return (index - topIndex) * itemHeight + getHeaderHeight (); -} -/** - * Returns <code>true</code> if the receiver's lines are visible, - * and <code>false</code> otherwise. Note that some platforms draw - * grid lines while others may draw alternating row colors. - * <p> - * If one of the receiver's ancestors is not visible or some - * other condition makes the receiver not visible, this method - * may still indicate that it is considered visible even though - * it may not actually be showing. - * </p> - * - * @return the visibility state of the lines - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @since 3.1 - */ -public boolean getLinesVisible () { - checkWidget (); - return linesVisible; -} -TreeColumn[] getOrderedColumns () { - if (orderedColumns != null) return orderedColumns; - return columns; -} -/** - * Returns the receiver's parent item, which must be a - * <code>TreeItem</code> or null when the receiver is a - * root. - * - * @return the receiver's parent item - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - */ -public TreeItem getParentItem () { - checkWidget (); - return null; -} -/** - * Returns an array of <code>TreeItem</code>s that are currently - * selected in the receiver. The order of the items is unspecified. - * An empty array indicates that no items are selected. - * <p> - * Note: This is not the actual structure used by the receiver - * to maintain its selection, so modifying the array will - * not affect the receiver. - * </p> - * @return an array representing the selection - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - */ -public TreeItem[] getSelection () { - checkWidget (); - int count = selectedItems.length; - TreeItem[] result = new TreeItem [count]; - if (count > 0) { - if (count == 1) { - System.arraycopy (selectedItems, 0, result, 0, count); - } else { - getSelection (result, items, 0); - } - } - return result; -} -int getSelection (TreeItem[] result, TreeItem[] items, int index) { - for (int i = 0; i < items.length; i++) { - TreeItem item = items [i]; - if (item.isSelected ()) result [index++] = item; - if (index == result.length) break; - index = getSelection (result, items [i].items, index); - if (index == result.length) break; - } - return index; -} -/** - * Returns the number of selected items contained in the receiver. - * - * @return the number of selected items - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - */ -public int getSelectionCount () { - checkWidget (); - return selectedItems.length; -} -/* - * Returns the index of the argument in the receiver's array of currently- - * selected items, or -1 if the item is not currently selected. - */ -int getSelectionIndex (TreeItem item) { - for (int i = 0; i < selectedItems.length; i++) { - if (selectedItems [i] == item) return i; - } - return -1; -} -/** - * Returns the column which shows the sort indicator for - * the receiver. The value may be null if no column shows - * the sort indicator. - * - * @return the sort indicator - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @see #setSortColumn(TreeColumn) - * - * @since 3.2 - */ -public TreeColumn getSortColumn () { - checkWidget (); - return sortColumn; -} -/** - * Returns the direction of the sort indicator for the receiver. - * The value will be one of <code>UP</code>, <code>DOWN</code> - * or <code>NONE</code>. - * - * @return the sort direction - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @see #setSortDirection(int) - * - * @since 3.2 - */ -public int getSortDirection () { - checkWidget (); - return sortDirection; -} -/** - * Returns the item which is currently at the top of the receiver. - * This item can change when items are expanded, collapsed, scrolled - * or new items are added or removed. - * - * @return the item at the top of the receiver - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @since 2.1 - */ -public TreeItem getTopItem () { - checkWidget (); - if (availableItemsCount == 0) return null; - return availableItems [topIndex]; -} -Image getUncheckedImage () { - return (Image) display.getData (ID_UNCHECKED); -} -void handleEvents (Event event) { - switch (event.type) { - case SWT.Paint: - if (event.widget == header) { - headerOnPaint (event); - } else { - onPaint (event); - } - break; - case SWT.MenuDetect: { - notifyListeners (SWT.MenuDetect, event); - break; - } - case SWT.MouseDown: - if (event.widget == header) { - headerOnMouseDown (event); - } else { - onMouseDown (event); - } - break; - case SWT.MouseUp: - if (event.widget == header) { - headerOnMouseUp (event); - } else { - onMouseUp (event); - } - break; - case SWT.MouseHover: - headerOnMouseHover (event); break; - case SWT.MouseMove: - headerOnMouseMove (event); break; - case SWT.MouseDoubleClick: - if (event.widget == header) { - headerOnMouseDoubleClick (event); - } else { - onMouseDoubleClick (event); - } - break; - case SWT.MouseExit: - headerOnMouseExit (); break; - case SWT.Dispose: - onDispose (event); break; - case SWT.KeyDown: - onKeyDown (event); break; - case SWT.Resize: - onResize (event); break; - case SWT.Selection: - if (event.widget == getHorizontalBar ()) { - onScrollHorizontal (event); - } - if (event.widget == getVerticalBar ()) { - onScrollVertical (event); - } - break; - case SWT.FocusOut: - onFocusOut (); break; - case SWT.FocusIn: - onFocusIn (); break; - case SWT.Traverse: - switch (event.detail) { - case SWT.TRAVERSE_ESCAPE: - case SWT.TRAVERSE_RETURN: - case SWT.TRAVERSE_TAB_NEXT: - case SWT.TRAVERSE_TAB_PREVIOUS: - case SWT.TRAVERSE_PAGE_NEXT: - case SWT.TRAVERSE_PAGE_PREVIOUS: - event.doit = true; - break; - } - break; - } -} -String headerGetToolTip (int x) { - if (resizeColumn != null) return null; - int orderedIndex = computeColumnIntersect (x, 0); - if (orderedIndex == -1) return null; - TreeColumn[] orderedColumns = getOrderedColumns (); - TreeColumn column = orderedColumns [orderedIndex]; - if (column.toolTipText == null) return null; - - /* no tooltip should appear if the hover is at a column resize opportunity */ - int columnX = column.getX (); - if (orderedIndex > 0 && orderedColumns [orderedIndex - 1].resizable) { - /* left column bound is resizable */ - if (x - columnX <= TOLLERANCE_COLUMNRESIZE) return null; - } - if (column.resizable) { - /* right column bound is resizable */ - int columnRightX = columnX + column.width; - if (columnRightX - x <= TOLLERANCE_COLUMNRESIZE) return null; - } - return removeMnemonics (column.toolTipText); -} -void headerHideToolTip() { - if (toolTipShell == null) return; - for (int i = 0; i < toolTipEvents.length; i++) { - header.removeListener (toolTipEvents [i], toolTipListener); - } - toolTipShell.dispose (); - toolTipShell = null; - toolTipLabel = null; -} -void headerOnMouseDoubleClick (Event event) { - if (!isFocusControl ()) setFocus (); - if (columns.length == 0) return; - TreeColumn[] orderedColumns = getOrderedColumns (); - int x = -horizontalOffset; - for (int i = 0; i < orderedColumns.length; i++) { - TreeColumn column = orderedColumns [i]; - x += column.width; - if (event.x < x) { - /* found the clicked column */ - TreeColumn packColumn = null; - if (x - event.x <= TOLLERANCE_COLUMNRESIZE) { - /* clicked on column bound for this column */ - packColumn = column; - } else { - if (i > 0 && event.x - column.getX () <= TOLLERANCE_COLUMNRESIZE) { - /* clicked on column bound that applies to previous column */ - packColumn = orderedColumns [i - 1]; - } - } - if (packColumn != null) { - packColumn.pack (); - resizeColumn = null; - if (Math.abs (packColumn.getX () + packColumn.width - event.x) > TOLLERANCE_COLUMNRESIZE) { - /* column separator has relocated away from pointer location */ - setCursor (null); - } - return; - } - /* did not click on column separator, so just fire column event */ - Event newEvent = new Event (); - newEvent.widget = column; - column.postEvent (SWT.DefaultSelection, newEvent); - return; - } - } -} -void headerOnMouseDown (Event event) { - if (event.button != 1) return; - TreeColumn[] orderedColumns = getOrderedColumns (); - int x = -horizontalOffset; - for (int i = 0; i < orderedColumns.length; i++) { - TreeColumn column = orderedColumns [i]; - x += column.width; - /* if close to a resizable column separator line then begin column resize */ - if (column.resizable && Math.abs (x - event.x) <= TOLLERANCE_COLUMNRESIZE) { - resizeColumn = column; - resizeColumnX = x; - return; - } - /* - * If within column but not near separator line then start column drag - * if column is moveable, or just fire column Selection otherwise. - */ - if (event.x < x) { - if (column.moveable) { - /* open tracker on the dragged column's header cell */ - int columnX = column.getX (); - int pointerOffset = event.x - columnX; - headerHideToolTip (); - Tracker tracker = new Tracker (this, SWT.NONE); - tracker.setRectangles (new Rectangle[] { - new Rectangle (columnX, 0, column.width, getHeaderHeight ()) - }); - if (!tracker.open ()) return; /* cancelled */ - /* determine which column was dragged onto */ - Rectangle result = tracker.getRectangles () [0]; - int pointerX = result.x + pointerOffset; - if (pointerX < 0) return; /* dragged too far left */ - x = -horizontalOffset; - for (int destIndex = 0; destIndex < orderedColumns.length; destIndex++) { - TreeColumn destColumn = orderedColumns [destIndex]; - x += destColumn.width; - if (pointerX < x) { - int oldIndex = column.getOrderIndex (); - if (destIndex == oldIndex) { /* dragged onto self */ - Event newEvent = new Event (); - newEvent.widget = column; - column.postEvent (SWT.Selection, newEvent); - return; - } - int leftmostIndex = Math.min (destIndex, oldIndex); - int[] oldOrder = getColumnOrder (); - int[] newOrder = new int [oldOrder.length]; - System.arraycopy (oldOrder, 0, newOrder, 0, leftmostIndex); - if (leftmostIndex == oldIndex) { - /* column moving to the right */ - System.arraycopy (oldOrder, oldIndex + 1, newOrder, oldIndex, destIndex - oldIndex); - } else { - /* column moving to the left */ - System.arraycopy (oldOrder, destIndex, newOrder, destIndex + 1, oldIndex - destIndex); - } - newOrder [destIndex] = oldOrder [oldIndex]; - int rightmostIndex = Math.max (destIndex, oldIndex); - System.arraycopy ( - oldOrder, - rightmostIndex + 1, - newOrder, - rightmostIndex + 1, - newOrder.length - rightmostIndex - 1); - setColumnOrder (newOrder); - return; - } - } - return; /* dragged too far right */ - } - /* column is not moveable */ - Event newEvent = new Event (); - newEvent.widget = column; - column.postEvent (SWT.Selection, newEvent); - return; - } - } -} -void headerOnMouseExit () { - if (resizeColumn != null) return; - setCursor (null); /* ensure that a column resize cursor does not escape */ -} -void headerOnMouseHover (Event event) { - headerShowToolTip (event.x); -} -void headerOnMouseMove (Event event) { - if (resizeColumn == null) { - /* not currently resizing a column */ - for (int i = 0; i < columns.length; i++) { - TreeColumn column = columns [i]; - int x = column.getX () + column.width; - if (Math.abs (x - event.x) <= TOLLERANCE_COLUMNRESIZE) { - if (column.resizable) { - setCursor (display.getSystemCursor (SWT.CURSOR_SIZEWE)); - } else { - setCursor (null); - } - return; - } - } - setCursor (null); - return; - } - - /* currently resizing a column */ - - /* don't allow the resize x to move left of the column's x position */ - if (event.x <= resizeColumn.getX ()) return; - - /* redraw the resizing line at its new location */ - GC gc = new GC (this); - gc.setForeground (display.getSystemColor (SWT.COLOR_BLACK)); - int lineHeight = clientArea.height; - redraw (resizeColumnX - 1, 0, 1, lineHeight, false); - resizeColumnX = event.x; - gc.drawLine (resizeColumnX - 1, 0, resizeColumnX - 1, lineHeight); - gc.dispose (); -} -void headerOnMouseUp (Event event) { - if (resizeColumn == null) return; /* not resizing a column */ - - /* remove the resize line */ - GC gc = new GC (this); - redraw (resizeColumnX - 1, 0, 1, clientArea.height, false); - gc.dispose (); - - int newWidth = resizeColumnX - resizeColumn.getX (); - if (newWidth != resizeColumn.width) { - setCursor (null); - updateColumnWidth (resizeColumn, newWidth); - } - resizeColumnX = -1; - resizeColumn = null; -} -void headerOnPaint (Event event) { - TreeColumn[] orderedColumns = getOrderedColumns (); - int numColumns = orderedColumns.length; - GC gc = event.gc; - Rectangle clipping = gc.getClipping (); - int startColumn = -1, endColumn = -1; - if (numColumns > 0) { - startColumn = computeColumnIntersect (clipping.x, 0); - if (startColumn != -1) { /* the clip x is within a column's bounds */ - endColumn = computeColumnIntersect (clipping.x + clipping.width, startColumn); - if (endColumn == -1) endColumn = numColumns - 1; - } - } else { - startColumn = endColumn = 0; - } - - /* paint the column header shadow that spans the full header width */ - Point headerSize = header.getSize (); - headerPaintHShadows (gc, 0, 0, headerSize.x, headerSize.y); - - /* if all damage is to the right of the last column then finished */ - if (startColumn == -1) return; - - /* paint each of the column headers */ - if (numColumns == 0) return; /* no headers to paint */ - for (int i = startColumn; i <= endColumn; i++) { - headerPaintVShadows (gc, orderedColumns [i].getX (), 0, orderedColumns [i].width, headerSize.y); - orderedColumns [i].paint (gc); - } -} -void headerPaintHShadows (GC gc, int x, int y, int width, int height) { - gc.setClipping (x, y, width, height); - int endX = x + width; - gc.setForeground (display.getSystemColor (SWT.COLOR_WIDGET_HIGHLIGHT_SHADOW)); - gc.drawLine (x, y, endX, y); /* highlight shadow */ - gc.setForeground (display.getSystemColor (SWT.COLOR_WIDGET_NORMAL_SHADOW)); - gc.drawLine (x, height - 2, endX, height - 2); /* lowlight shadow */ - gc.setForeground (display.getSystemColor (SWT.COLOR_WIDGET_DARK_SHADOW)); - gc.drawLine (x, height - 1, endX, height - 1); /* outer shadow */ -} -void headerPaintVShadows (GC gc, int x, int y, int width, int height) { - gc.setClipping (x, y, width, height); - int endX = x + width; - gc.setForeground (display.getSystemColor (SWT.COLOR_WIDGET_HIGHLIGHT_SHADOW)); - gc.drawLine (x, y, x, y + height - 1); /* highlight shadow */ - gc.setForeground (display.getSystemColor (SWT.COLOR_WIDGET_NORMAL_SHADOW)); - gc.drawLine (endX - 2, y + 1, endX - 2, height - 2); /* light inner shadow */ - gc.setForeground (display.getSystemColor (SWT.COLOR_WIDGET_DARK_SHADOW)); - gc.drawLine (endX - 1, y, endX - 1, height - 1); /* dark outer shadow */ -} -void headerShowToolTip (int x) { - String tooltip = headerGetToolTip (x); - if (tooltip == null || tooltip.length () == 0) return; - - if (toolTipShell == null) { - toolTipShell = new Shell (getShell (), SWT.ON_TOP | SWT.TOOL); - toolTipLabel = new Label (toolTipShell, SWT.CENTER); - Display display = toolTipShell.getDisplay (); - toolTipLabel.setForeground (display.getSystemColor (SWT.COLOR_INFO_FOREGROUND)); - toolTipLabel.setBackground (display.getSystemColor (SWT.COLOR_INFO_BACKGROUND)); - for (int i = 0; i < toolTipEvents.length; i++) { - header.addListener (toolTipEvents [i], toolTipListener); - } - } - if (headerUpdateToolTip (x)) { - toolTipShell.setVisible (true); - } else { - headerHideToolTip (); - } -} -boolean headerUpdateToolTip (int x) { - String tooltip = headerGetToolTip (x); - if (tooltip == null || tooltip.length () == 0) return false; - if (tooltip.equals (toolTipLabel.getText ())) return true; - - toolTipLabel.setText (tooltip); - TreeColumn column = getOrderedColumns () [computeColumnIntersect (x, 0)]; - toolTipShell.setData (new Integer (column.getIndex ())); - Point labelSize = toolTipLabel.computeSize (SWT.DEFAULT, SWT.DEFAULT, true); - labelSize.x += 2; labelSize.y += 2; - toolTipLabel.setSize (labelSize); - toolTipShell.pack (); - /* - * On some platforms, there is a minimum size for a shell - * which may be greater than the label size. - * To avoid having the background of the tip shell showing - * around the label, force the label to fill the entire client area. - */ - Rectangle area = toolTipShell.getClientArea (); - toolTipLabel.setSize (area.width, area.height); - - /* Position the tooltip and ensure it's not located off the screen */ - Point cursorLocation = getDisplay ().getCursorLocation (); - int cursorHeight = 21; /* assuming cursor is 21x21 */ - Point size = toolTipShell.getSize (); - Rectangle rect = getMonitor ().getBounds (); - Point pt = new Point (cursorLocation.x, cursorLocation.y + cursorHeight + 2); - pt.x = Math.max (pt.x, rect.x); - if (pt.x + size.x > rect.x + rect.width) pt.x = rect.x + rect.width - size.x; - if (pt.y + size.y > rect.y + rect.height) pt.y = cursorLocation.y - 2 - size.y; - toolTipShell.setLocation (pt); - return true; -} -/** - * Searches the receiver's list starting at the first column - * (index 0) until a column is found that is equal to the - * argument, and returns the index of that column. If no column - * is found, returns -1. - * - * @param column the search column - * @return the index of the column - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if the column is null</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @since 3.1 - */ -public int indexOf (TreeColumn column) { - checkWidget (); - if (column == null) error (SWT.ERROR_NULL_ARGUMENT); - if (column.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT); - return column.getIndex (); -} -/** - * Searches the receiver's list starting at the first item - * (index 0) until an item is found that is equal to the - * argument, and returns the index of that item. If no item - * is found, returns -1. - * - * @param item the search item - * @return the index of the item - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if the item is null</li> - * <li>ERROR_INVALID_ARGUMENT - if the item has been disposed</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @since 3.1 - */ -public int indexOf (TreeItem item) { - checkWidget (); - if (item == null) error (SWT.ERROR_NULL_ARGUMENT); - if (item.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT); - if (item.parentItem != null || item.parent != this) return -1; - return item.getIndex (); -} -static void initImages (final Display display) { - PaletteData fourBit = new PaletteData (new RGB[] { - new RGB (0, 0, 0), new RGB (128, 0, 0), new RGB (0, 128, 0), new RGB (128, 128, 0), - new RGB (0, 0, 128), new RGB (128, 0, 128), new RGB (0, 128, 128), new RGB (128, 128, 128), - new RGB (192, 192, 192), new RGB (255, 0, 0), new RGB (0, 255, 0), new RGB (255, 255, 0), - new RGB (0, 0, 255), new RGB (255, 0, 255), new RGB (0, 255, 255), new RGB (255, 255, 255)}); - - if (display.getData (ID_EXPANDED) == null) { - ImageData expanded = new ImageData ( - 9, 9, 4, /* width, height, depth */ - fourBit, 4, - new byte[] { - 119, 119, 119, 119, 112, 0, 0, 0, - 127, -1, -1, -1, 112, 0, 0, 0, - 127, -1, -1, -1, 112, 0, 0, 0, - 127, -1, -1, -1, 112, 0, 0, 0, - 127, 0, 0, 15, 112, 0, 0, 0, - 127, -1, -1, -1, 112, 0, 0, 0, - 127, -1, -1, -1, 112, 0, 0, 0, - 127, -1, -1, -1, 112, 0, 0, 0, - 119, 119, 119, 119, 112, 0, 0, 0}); - expanded.transparentPixel = 15; /* use white for transparency */ - display.setData (ID_EXPANDED, new Image (display, expanded)); - } - - if (display.getData (ID_COLLAPSED) == null) { - ImageData collapsed = new ImageData ( - 9, 9, 4, /* width, height, depth */ - fourBit, 4, - new byte[] { - 119, 119, 119, 119, 112, 0, 0, 0, - 127, -1, -1, -1, 112, 0, 0, 0, - 127, -1, 15, -1, 112, 0, 0, 0, - 127, -1, 15, -1, 112, 0, 0, 0, - 127, 0, 0, 15, 112, 0, 0, 0, - 127, -1, 15, -1, 112, 0, 0, 0, - 127, -1, 15, -1, 112, 0, 0, 0, - 127, -1, -1, -1, 112, 0, 0, 0, - 119, 119, 119, 119, 112, 0, 0, 0}); - collapsed.transparentPixel = 15; /* use white for transparency */ - display.setData (ID_COLLAPSED, new Image (display, collapsed)); - } - - PaletteData arrowPalette = new PaletteData (new RGB[] { - new RGB (0, 0, 0), new RGB (255, 255, 255)}); - if (display.getData (ID_ARROWDOWN) == null) { - ImageData arrowDown = new ImageData ( - 7, 4, 1, - arrowPalette, 1, - new byte[] {0x00, (byte)0x83, (byte)0xC7, (byte)0xEF}); - arrowDown.transparentPixel = 0x1; /* use white for transparency */ - display.setData (ID_ARROWDOWN, new Image (display, arrowDown)); - } - if (display.getData (ID_ARROWUP) == null) { - ImageData arrowUp = new ImageData ( - 7, 4, 1, - arrowPalette, 1, - new byte[] {(byte)0xEF, (byte)0xC7, (byte)0x83, 0x00}); - arrowUp.transparentPixel = 0x1; /* use white for transparency */ - display.setData (ID_ARROWUP, new Image (display, arrowUp)); - } - - PaletteData checkMarkPalette = new PaletteData ( - new RGB[] {new RGB (0, 0, 0), new RGB (252, 3, 251)}); - byte[] checkbox = new byte[] {0, 0, 127, -64, 127, -64, 127, -64, 127, -64, 127, -64, 127, -64, 127, -64, 127, -64, 127, -64, 0, 0}; - ImageData checkmark = new ImageData (7, 7, 1, checkMarkPalette, 1, new byte[] {-4, -8, 112, 34, 6, -114, -34}); - checkmark.transparentPixel = 1; - if (display.getData (ID_CHECKMARK) == null) { - display.setData (ID_CHECKMARK, new Image (display, checkmark)); - } - - if (display.getData (ID_UNCHECKED) == null) { - PaletteData uncheckedPalette = new PaletteData ( - new RGB[] {new RGB (128, 128, 128), new RGB (255, 255, 255)}); - ImageData unchecked = new ImageData (11, 11, 1, uncheckedPalette, 2, checkbox); - display.setData (ID_UNCHECKED, new Image (display, unchecked)); - } - - if (display.getData (ID_GRAYUNCHECKED) == null) { - PaletteData grayUncheckedPalette = new PaletteData ( - new RGB[] {new RGB (128, 128, 128), new RGB (192, 192, 192)}); - ImageData grayUnchecked = new ImageData (11, 11, 1, grayUncheckedPalette, 2, checkbox); - display.setData (ID_GRAYUNCHECKED, new Image (display, grayUnchecked)); - } - - if (display.getData (ID_CONNECTOR_COLOR) == null) { - display.setData (ID_CONNECTOR_COLOR, new Color (display, 170, 170, 170)); - } - - display.disposeExec (new Runnable () { - public void run() { - Image expanded = (Image) display.getData (ID_EXPANDED); - if (expanded != null) expanded.dispose (); - Image collapsed = (Image) display.getData (ID_COLLAPSED); - if (collapsed != null) collapsed.dispose (); - Color connectorColor = (Color) display.getData (ID_CONNECTOR_COLOR); - if (connectorColor != null) connectorColor.dispose (); - Image unchecked = (Image) display.getData (ID_UNCHECKED); - if (unchecked != null) unchecked.dispose (); - Image grayUnchecked = (Image) display.getData (ID_GRAYUNCHECKED); - if (grayUnchecked != null) grayUnchecked.dispose (); - Image checkmark = (Image) display.getData (ID_CHECKMARK); - if (checkmark != null) checkmark.dispose (); - Image arrowDown = (Image) display.getData (ID_ARROWDOWN); - if (arrowDown != null) arrowDown.dispose (); - Image arrowUp = (Image) display.getData (ID_ARROWUP); - if (arrowUp != null) arrowUp.dispose (); - - display.setData (ID_EXPANDED, null); - display.setData (ID_COLLAPSED, null); - display.setData (ID_CONNECTOR_COLOR, null); - display.setData (ID_UNCHECKED, null); - display.setData (ID_GRAYUNCHECKED, null); - display.setData (ID_CHECKMARK, null); - display.setData (ID_ARROWDOWN, null); - display.setData (ID_ARROWUP, null); - } - }); -} -/* - * Important: Assumes that item just became available (ie.- was either created - * or the parent item was expanded) and the parent is available. - */ -void makeAvailable (TreeItem item) { - int parentItemCount = item.parentItem.items.length; - int index = 0; - if (parentItemCount == 1) { /* this is the only child of parentItem */ - index = item.parentItem.availableIndex + 1; - } else { - /* determine this item's index in its parent */ - int itemIndex = 0; - TreeItem[] items = item.parentItem.items; - for (int i = 0; i < items.length; i++) { - if (items [i] == item) { - itemIndex = i; - break; - } - } - if (itemIndex != parentItemCount - 1) { /* this is not the last child */ - index = items [itemIndex + 1].availableIndex; - } else { /* this is the last child */ - TreeItem previousItem = items [itemIndex - 1]; - index = previousItem.availableIndex + previousItem.computeAvailableDescendentCount (); - } - } - - if (availableItemsCount == availableItems.length) { - int grow = drawCount <= 0 ? 4 : Math.max (4, availableItems.length * 3 / 2); - TreeItem[] newAvailableItems = new TreeItem [availableItems.length + grow]; - System.arraycopy (availableItems, 0, newAvailableItems, 0, availableItems.length); - availableItems = newAvailableItems; - } - if (index != availableItemsCount) { - /* new item is not at end of list, so shift other items right to create space for it */ - System.arraycopy (availableItems, index, availableItems, index + 1, availableItemsCount - index); - } - availableItems [index] = item; - availableItemsCount++; - - /* update availableIndex as needed */ - for (int i = index; i < availableItemsCount; i++) { - availableItems [i].availableIndex = i; - } -} - -/* - * Important: Assumes that item is available and its descendents have just become - * available (ie.- they were either created or the item was expanded). - */ -void makeDescendentsAvailable (TreeItem item, TreeItem[] descendents) { - int itemAvailableIndex = item.availableIndex; - TreeItem[] newAvailableItems = new TreeItem [availableItemsCount + descendents.length - 1]; - - System.arraycopy (availableItems, 0, newAvailableItems, 0, itemAvailableIndex); - System.arraycopy (descendents, 0, newAvailableItems, itemAvailableIndex, descendents.length); - int startIndex = itemAvailableIndex + 1; - System.arraycopy ( - availableItems, - startIndex, - newAvailableItems, - itemAvailableIndex + descendents.length, - availableItemsCount - startIndex); - availableItems = newAvailableItems; - availableItemsCount = availableItems.length; - - /* update availableIndex as needed */ - for (int i = itemAvailableIndex; i < availableItemsCount; i++) { - availableItems [i].availableIndex = i; - } -} - -/* - * Important: Assumes that item is available and its descendents have just become - * unavailable (ie.- they were either disposed or the item was collapsed). - */ -void makeDescendentsUnavailable (TreeItem item, TreeItem[] descendents) { - int descendentsLength = descendents.length; - TreeItem[] newAvailableItems = new TreeItem [availableItemsCount - descendentsLength + 1]; - - System.arraycopy (availableItems, 0, newAvailableItems, 0, item.availableIndex + 1); - int startIndex = item.availableIndex + descendentsLength; - System.arraycopy ( - availableItems, - startIndex, - newAvailableItems, - item.availableIndex + 1, - availableItemsCount - startIndex); - availableItems = newAvailableItems; - availableItemsCount = availableItems.length; - - /* update availableIndexes */ - for (int i = 1; i < descendents.length; i++) { - /* skip the first descendent since this is the item being collapsed */ - descendents [i].availableIndex = -1; - } - for (int i = item.availableIndex; i < availableItemsCount; i++) { - availableItems [i].availableIndex = i; - } - - /* remove the selection from all descendents */ - for (int i = selectedItems.length - 1; i >= 0; i--) { - if (selectedItems [i] != item && selectedItems [i].hasAncestor (item)) { - removeSelectedItem (i); - } - } - - /* if the anchorItem is being hidden then clear it */ - if (anchorItem != null && anchorItem != item && anchorItem.hasAncestor (item)) { - anchorItem = null; - } -} -void onArrowDown (int stateMask) { - if ((stateMask & (SWT.SHIFT | SWT.CTRL)) == 0) { - /* Down Arrow with no modifiers */ - int newFocusIndex = focusItem.availableIndex + 1; - if (newFocusIndex == availableItemsCount) return; /* at bottom */ - selectItem (availableItems [newFocusIndex], false); - setFocusItem (availableItems [newFocusIndex], true); - redrawItem (newFocusIndex, true); - showItem (availableItems [newFocusIndex]); - Event newEvent = new Event (); - newEvent.item = availableItems [newFocusIndex]; - postEvent (SWT.Selection, newEvent); - return; - } - if ((style & SWT.SINGLE) != 0) { - if ((stateMask & SWT.CTRL) != 0) { - /* CTRL+Down Arrow, CTRL+Shift+Down Arrow */ - int visibleItemCount = (clientArea.height - getHeaderHeight ()) / itemHeight; - if (availableItemsCount <= topIndex + visibleItemCount) return; /* at bottom */ - update (); - topIndex++; - ScrollBar vBar = getVerticalBar (); - if (vBar != null) vBar.setSelection (topIndex); - GC gc = new GC (this); - gc.copyArea ( - 0, 0, - clientArea.width, clientArea.height, - 0, -itemHeight); - gc.dispose (); - return; - } - /* Shift+Down Arrow */ - int newFocusIndex = focusItem.availableIndex + 1; - if (newFocusIndex == availableItemsCount) return; /* at bottom */ - selectItem (availableItems [newFocusIndex], false); - setFocusItem (availableItems [newFocusIndex], true); - redrawItem (newFocusIndex, true); - showItem (availableItems [newFocusIndex]); - Event newEvent = new Event (); - newEvent.item = availableItems [newFocusIndex]; - postEvent (SWT.Selection, newEvent); - return; - } - /* SWT.MULTI */ - if ((stateMask & SWT.CTRL) != 0) { - if ((stateMask & SWT.SHIFT) != 0) { - /* CTRL+Shift+Down Arrow */ - int visibleItemCount = (clientArea.height - getHeaderHeight ()) / itemHeight; - if (availableItemsCount <= topIndex + visibleItemCount) return; /* at bottom */ - update (); - topIndex++; - ScrollBar vBar = getVerticalBar (); - if (vBar != null) vBar.setSelection (topIndex); - GC gc = new GC (this); - gc.copyArea ( - 0, 0, - clientArea.width, clientArea.height, - 0, -itemHeight); - gc.dispose (); - return; - } - /* CTRL+Down Arrow */ - int focusIndex = focusItem.availableIndex; - if (focusIndex == availableItemsCount - 1) return; /* at bottom */ - TreeItem newFocusItem = availableItems [focusIndex + 1]; - setFocusItem (newFocusItem, true); - redrawItem (newFocusItem.availableIndex, true); - showItem (newFocusItem); - return; - } - /* Shift+Down Arrow */ - int newFocusIndex = focusItem.availableIndex + 1; - if (newFocusIndex == availableItemsCount) return; /* at bottom */ - if (anchorItem == null) anchorItem = focusItem; - if (focusItem.availableIndex < anchorItem.availableIndex) { - deselectItem (focusItem); - redrawItem (focusItem.availableIndex, true); - } - selectItem (availableItems [newFocusIndex], true); - setFocusItem (availableItems [newFocusIndex], true); - redrawItem (newFocusIndex, true); - showItem (availableItems [newFocusIndex]); - Event newEvent = new Event (); - newEvent.item = availableItems [newFocusIndex]; - postEvent (SWT.Selection, newEvent); -} -void onArrowLeft (int stateMask) { - if ((stateMask & SWT.CTRL) != 0) { - /* CTRL+Left Arrow, CTRL+Shift+Left Arrow */ - if (horizontalOffset == 0) return; - int newSelection = Math.max (0, horizontalOffset - SIZE_HORIZONTALSCROLL); - update (); - GC gc = new GC (this); - gc.copyArea ( - 0, 0, - clientArea.width, clientArea.height, - horizontalOffset - newSelection, 0); - gc.dispose (); - if (header.getVisible ()) { - header.update (); - Rectangle headerClientArea = header.getClientArea (); - gc = new GC (header); - gc.copyArea ( - 0, 0, - headerClientArea.width, headerClientArea.height, - horizontalOffset - newSelection, 0); - gc.dispose(); - } - horizontalOffset = newSelection; - ScrollBar hBar = getHorizontalBar (); - if (hBar != null) hBar.setSelection (horizontalOffset); - return; - } - /* Left Arrow with no modifiers, Shift+Left Arrow */ - if (focusItem.expanded) { - focusItem.setExpanded (false); - Event newEvent = new Event (); - newEvent.item = focusItem; - sendEvent (SWT.Collapse, newEvent); - return; - } - TreeItem parentItem = focusItem.parentItem; - if (parentItem == null) return; - - selectItem (parentItem, false); - setFocusItem (parentItem, true); - redrawItem (parentItem.availableIndex, true); - showItem (parentItem); - Event newEvent = new Event (); - newEvent.item = parentItem; - postEvent (SWT.Selection, newEvent); -} -void onArrowRight (int stateMask) { - if ((stateMask & SWT.CTRL) != 0) { - /* CTRL+Right Arrow, CTRL+Shift+Right Arrow */ - ScrollBar hBar = getHorizontalBar (); - if (hBar != null) { - int maximum = hBar.getMaximum (); - int clientWidth = clientArea.width; - if ((horizontalOffset + clientWidth) == maximum) return; - if (maximum <= clientWidth) return; - int newSelection = Math.min (horizontalOffset + SIZE_HORIZONTALSCROLL, maximum - clientWidth); - update (); - GC gc = new GC (this); - gc.copyArea ( - 0, 0, - clientArea.width, clientArea.height, - horizontalOffset - newSelection, 0); - gc.dispose (); - if (header.getVisible ()) { - Rectangle headerClientArea = header.getClientArea (); - header.update (); - gc = new GC (header); - gc.copyArea ( - 0, 0, - headerClientArea.width, headerClientArea.height, - horizontalOffset - newSelection, 0); - gc.dispose(); - } - horizontalOffset = newSelection; - hBar.setSelection (horizontalOffset); - } - return; - } - /* Right Arrow with no modifiers, Shift+Right Arrow */ - TreeItem[] children = focusItem.items; - if (children.length == 0) return; - if (!focusItem.expanded) { - focusItem.setExpanded (true); - Event newEvent = new Event (); - newEvent.item = focusItem; - inExpand = true; - sendEvent (SWT.Expand, newEvent); - inExpand = false; - if (isDisposed ()) return; - if (focusItem.items.length == 0) { - focusItem.expanded = false; - } - return; - } - selectItem (children [0], false); - setFocusItem (children [0], true); - redrawItem (children [0].availableIndex, true); - showItem (children [0]); - Event newEvent = new Event (); - newEvent.item = children [0]; - postEvent (SWT.Selection, newEvent); -} -void onArrowUp (int stateMask) { - if ((stateMask & (SWT.SHIFT | SWT.CTRL)) == 0) { - /* Up Arrow with no modifiers */ - int newFocusIndex = focusItem.availableIndex - 1; - if (newFocusIndex < 0) return; /* at top */ - TreeItem item = availableItems [newFocusIndex]; - selectItem (item, false); - setFocusItem (item, true); - redrawItem (newFocusIndex, true); - showItem (item); - Event newEvent = new Event (); - newEvent.item = item; - postEvent (SWT.Selection, newEvent); - return; - } - if ((style & SWT.SINGLE) != 0) { - if ((stateMask & SWT.CTRL) != 0) { - /* CTRL+Up Arrow, CTRL+Shift+Up Arrow */ - if (topIndex == 0) return; /* at top */ - update (); - topIndex--; - ScrollBar vBar = getVerticalBar (); - if (vBar != null) vBar.setSelection (topIndex); - GC gc = new GC (this); - gc.copyArea ( - 0, 0, - clientArea.width, clientArea.height, - 0, itemHeight); - gc.dispose (); - return; - } - /* Shift+Up Arrow */ - int newFocusIndex = focusItem.availableIndex - 1; - if (newFocusIndex < 0) return; /* at top */ - TreeItem item = availableItems [newFocusIndex]; - selectItem (item, false); - setFocusItem (item, true); - redrawItem (newFocusIndex, true); - showItem (item); - Event newEvent = new Event (); - newEvent.item = item; - postEvent (SWT.Selection, newEvent); - return; - } - /* SWT.MULTI */ - if ((stateMask & SWT.CTRL) != 0) { - if ((stateMask & SWT.SHIFT) != 0) { - /* CTRL+Shift+Up Arrow */ - if (topIndex == 0) return; /* at top */ - update (); - topIndex--; - ScrollBar vBar = getVerticalBar (); - if (vBar != null) vBar.setSelection (topIndex); - GC gc = new GC (this); - gc.copyArea ( - 0, 0, - clientArea.width, clientArea.height, - 0, itemHeight); - gc.dispose (); - return; - } - /* CTRL+Up Arrow */ - int focusIndex = focusItem.availableIndex; - if (focusIndex == 0) return; /* at top */ - TreeItem newFocusItem = availableItems [focusIndex - 1]; - setFocusItem (newFocusItem, true); - showItem (newFocusItem); - redrawItem (newFocusItem.availableIndex, true); - return; - } - /* Shift+Up Arrow */ - int newFocusIndex = focusItem.availableIndex - 1; - if (newFocusIndex < 0) return; /* at top */ - if (anchorItem == null) anchorItem = focusItem; - if (anchorItem.availableIndex < focusItem.availableIndex) { - deselectItem (focusItem); - redrawItem (focusItem.availableIndex, true); - } - TreeItem item = availableItems [newFocusIndex]; - selectItem (item, true); - setFocusItem (item, true); - redrawItem (newFocusIndex, true); - showItem (item); - Event newEvent = new Event (); - newEvent.item = item; - postEvent (SWT.Selection, newEvent); -} -void onCR () { - if (focusItem == null) return; - Event event = new Event (); - event.item = focusItem; - postEvent (SWT.DefaultSelection, event); -} -void onDispose (Event event) { - if (isDisposed ()) return; - if (ignoreDispose) return; - ignoreDispose = true; - notifyListeners(SWT.Dispose, event); - event.type = SWT.None; - for (int i = 0; i < items.length; i++) { - items [i].dispose (false); - } - for (int i = 0; i < columns.length; i++) { - columns [i].dispose (false); - } - if (toolTipShell != null) { - toolTipShell.dispose (); - toolTipShell = null; - toolTipLabel = null; - } - toolTipListener = null; - topIndex = availableItemsCount = horizontalOffset = 0; - availableItems = items = selectedItems = null; - columns = orderedColumns = null; - focusItem = anchorItem = insertMarkItem = lastClickedItem = null; - lastSelectionEvent = null; - header = null; - resizeColumn = sortColumn = null; - expanderBounds = null; -} -void onEnd (int stateMask) { - int lastAvailableIndex = availableItemsCount - 1; - if ((stateMask & (SWT.CTRL | SWT.SHIFT)) == 0) { - /* End with no modifiers */ - if (focusItem.availableIndex == lastAvailableIndex) return; /* at bottom */ - TreeItem item = availableItems [lastAvailableIndex]; - selectItem (item, false); - setFocusItem (item, true); - redrawItem (lastAvailableIndex, true); - showItem (item); - Event newEvent = new Event (); - newEvent.item = item; - postEvent (SWT.Selection, newEvent); - return; - } - if ((style & SWT.SINGLE) != 0) { - if ((stateMask & SWT.CTRL) != 0) { - /* CTRL+End, CTRL+Shift+End */ - int visibleItemCount = (clientArea.height - getHeaderHeight ()) / itemHeight; - setTopItem (availableItems [availableItemsCount - visibleItemCount]); - return; - } - /* Shift+End */ - if (focusItem.availableIndex == lastAvailableIndex) return; /* at bottom */ - TreeItem item = availableItems [lastAvailableIndex]; - selectItem (item, false); - setFocusItem (item, true); - redrawItem (lastAvailableIndex, true); - showItem (item); - Event newEvent = new Event (); - newEvent.item = item; - postEvent (SWT.Selection, newEvent); - return; - } - /* SWT.MULTI */ - if ((stateMask & SWT.CTRL) != 0) { - if ((stateMask & SWT.SHIFT) != 0) { - /* CTRL+Shift+End */ - showItem (availableItems [lastAvailableIndex]); - return; - } - /* CTRL+End */ - if (focusItem.availableIndex == lastAvailableIndex) return; /* at bottom */ - TreeItem item = availableItems [lastAvailableIndex]; - setFocusItem (item, true); - showItem (item); - redrawItem (item.availableIndex, true); - return; - } - /* Shift+End */ - if (anchorItem == null) anchorItem = focusItem; - TreeItem selectedItem = availableItems [lastAvailableIndex]; - if (selectedItem == focusItem && selectedItem.isSelected ()) return; - int anchorIndex = anchorItem.availableIndex; - int selectIndex = selectedItem.availableIndex; - TreeItem[] newSelection = new TreeItem [selectIndex - anchorIndex + 1]; - int writeIndex = 0; - for (int i = anchorIndex; i <= selectIndex; i++) { - newSelection [writeIndex++] = availableItems [i]; - } - setSelection (newSelection, false); - setFocusItem (selectedItem, true); - redrawItems (anchorIndex, selectIndex, true); - showItem (selectedItem); - Event newEvent = new Event (); - newEvent.item = selectedItem; - postEvent (SWT.Selection, newEvent); -} -void onFocusIn () { - hasFocus = true; - - if (items.length == 0) { - redraw (); - return; - } - if (focusItem != null) { - redrawItem (focusItem.availableIndex, true); - return; - } - /* an initial focus item must be selected */ - TreeItem initialFocus = null; - if (selectedItems.length > 0) { - for (int i = 0; i < selectedItems.length && initialFocus == null; i++) { - if (selectedItems [i].isAvailable ()) { - initialFocus = selectedItems [i]; - } - } - if (initialFocus == null) { - /* none of the selected items are available */ - initialFocus = availableItems [topIndex]; - } - } else { - initialFocus = availableItems [topIndex]; - } - setFocusItem (initialFocus, false); - redrawItem (initialFocus.availableIndex, true); - return; -} -void onFocusOut () { - hasFocus = false; - - if (items.length == 0) { - redraw (); - return; - } - - if (focusItem != null) { - redrawItem (focusItem.availableIndex, true); - } -} -void onHome (int stateMask) { - if ((stateMask & (SWT.CTRL | SWT.SHIFT)) == 0) { - /* Home with no modifiers */ - if (focusItem.availableIndex == 0) return; /* at top */ - TreeItem item = availableItems [0]; - selectItem (item, false); - setFocusItem (item, true); - redrawItem (0, true); - showItem (item); - Event newEvent = new Event (); - newEvent.item = item; - postEvent (SWT.Selection, newEvent); - return; - } - if ((style & SWT.SINGLE) != 0) { - if ((stateMask & SWT.CTRL) != 0) { - /* CTRL+Home, CTRL+Shift+Home */ - setTopItem (availableItems [0]); - return; - } - /* Shift+Home */ - if (focusItem.availableIndex == 0) return; /* at top */ - TreeItem item = availableItems [0]; - selectItem (item, false); - setFocusItem (item, true); - redrawItem (0, true); - showItem (item); - Event newEvent = new Event (); - newEvent.item = item; - postEvent (SWT.Selection, newEvent); - return; - } - /* SWT.MULTI */ - if ((stateMask & SWT.CTRL) != 0) { - if ((stateMask & SWT.SHIFT) != 0) { - /* CTRL+Shift+Home */ - setTopItem (availableItems [0]); - return; - } - /* CTRL+Home */ - if (focusItem.availableIndex == 0) return; /* at top */ - TreeItem item = availableItems [0]; - setFocusItem (item, true); - showItem (item); - redrawItem (item.availableIndex, true); - return; - } - /* Shift+Home */ - if (anchorItem == null) anchorItem = focusItem; - TreeItem selectedItem = availableItems [0]; - if (selectedItem == focusItem && selectedItem.isSelected ()) return; - int anchorIndex = anchorItem.availableIndex; - int selectIndex = selectedItem.availableIndex; - TreeItem[] newSelection = new TreeItem [anchorIndex + 1]; - int writeIndex = 0; - for (int i = anchorIndex; i >= 0; i--) { - newSelection [writeIndex++] = availableItems [i]; - } - setSelection (newSelection, false); - setFocusItem (selectedItem, true); - redrawItems (anchorIndex, selectIndex, true); - showItem (selectedItem); - Event newEvent = new Event (); - newEvent.item = selectedItem; - postEvent (SWT.Selection, newEvent); -} -void onKeyDown (Event event) { - if (ignoreKey) { - ignoreKey = false; - return; - } - ignoreKey = true; - notifyListeners (event.type, event); - event.type = SWT.None; - if (!event.doit) return; - if (focusItem == null) return; - if ((event.stateMask & SWT.SHIFT) == 0 && event.keyCode != SWT.SHIFT) { - anchorItem = null; - } - switch (event.keyCode) { - case SWT.ARROW_UP: - onArrowUp (event.stateMask); - return; - case SWT.ARROW_DOWN: - onArrowDown (event.stateMask); - return; - case SWT.ARROW_LEFT: - onArrowLeft (event.stateMask); - return; - case SWT.ARROW_RIGHT: - onArrowRight (event.stateMask); - return; - case SWT.PAGE_UP: - onPageUp (event.stateMask); - return; - case SWT.PAGE_DOWN: - onPageDown (event.stateMask); - return; - case SWT.HOME: - onHome (event.stateMask); - return; - case SWT.END: - onEnd (event.stateMask); - return; - } - if (event.character == ' ') { - onSpace (); - return; - } - if (event.character == SWT.CR) { - onCR (); - return; - } - if ((event.stateMask & SWT.CTRL) != 0) return; - - int initialIndex = focusItem.availableIndex; - char character = Character.toLowerCase (event.character); - /* check available items from current focus item to bottom */ - for (int i = initialIndex + 1; i < availableItemsCount; i++) { - TreeItem item = availableItems [i]; - String text = item.getText (0, false); - if (text.length() > 0) { - if (Character.toLowerCase (text.charAt (0)) == character) { - selectItem (item, false); - setFocusItem (item, true); - redrawItem (i, true); - showItem (item); - Event newEvent = new Event (); - newEvent.item = item; - postEvent (SWT.Selection, newEvent); - return; - } - } - } - /* check available items from top to current focus item */ - for (int i = 0; i < initialIndex; i++) { - TreeItem item = availableItems [i]; - String text = item.getText (0, false); - if (text.length() > 0) { - if (Character.toLowerCase (text.charAt (0)) == character) { - selectItem (item, false); - setFocusItem (item, true); - redrawItem (i, true); - showItem (item); - Event newEvent = new Event (); - newEvent.item = item; - postEvent (SWT.Selection, newEvent); - return; - } - } - } -} -void onMouseDoubleClick (Event event) { - if (!isFocusControl ()) setFocus (); - int index = (event.y - getHeaderHeight ()) / itemHeight + topIndex; - if (!(0 <= index && index < availableItemsCount)) return; /* not on an available item */ - TreeItem selectedItem = availableItems [index]; - - /* - * If the two clicks of the double click did not occur over the same item then do not - * consider this to be a default selection. - */ - if (selectedItem != lastClickedItem) return; - - /* if click was in expander box then don't fire event */ - if (selectedItem.items.length > 0 && selectedItem.getExpanderBounds ().contains (event.x, event.y)) { - return; - } - - if (!selectedItem.getHitBounds ().contains (event.x, event.y)) return; /* considers x */ - - Event newEvent = new Event (); - newEvent.item = selectedItem; - postEvent (SWT.DefaultSelection, newEvent); -} -void onMouseDown (Event event) { - if (!isFocusControl ()) forceFocus (); - int index = (event.y - getHeaderHeight ()) / itemHeight + topIndex; - if (!(0 <= index && index < availableItemsCount)) return; /* not on an available item */ - TreeItem selectedItem = availableItems [index]; - - /* if click was in expander box */ - if (selectedItem.items.length > 0 && selectedItem.getExpanderBounds ().contains (event.x, event.y)) { - if (event.button != 1) return; - boolean expand = !selectedItem.expanded; - selectedItem.setExpanded (expand); - Event newEvent = new Event (); - newEvent.item = selectedItem; - if (expand) { - inExpand = true; - sendEvent (SWT.Expand, newEvent); - inExpand = false; - if (isDisposed ()) return; - if (selectedItem.items.length == 0) { - selectedItem.expanded = false; - } - } else { - sendEvent (SWT.Collapse, newEvent); - } - return; - } - /* if click was in checkbox */ - if ((style & SWT.CHECK) != 0 && selectedItem.getCheckboxBounds ().contains (event.x, event.y)) { - if (event.button != 1) return; - selectedItem.setChecked (!selectedItem.checked); - Event newEvent = new Event (); - newEvent.item = selectedItem; - newEvent.detail = SWT.CHECK; - postEvent (SWT.Selection, newEvent); - return; - } - - if (!selectedItem.getHitBounds ().contains (event.x, event.y)) return; - - if ((event.stateMask & SWT.SHIFT) == 0 && event.keyCode != SWT.SHIFT) anchorItem = null; - - boolean sendSelection = true; - /* Detect when this is the second click of a DefaultSelection and don't fire Selection */ - if (lastSelectionEvent != null && lastSelectionEvent.item == selectedItem) { - if (event.time - lastSelectionEvent.time <= display.getDoubleClickTime ()) { - sendSelection = false; - } else { - lastSelectionEvent = event; - event.item = selectedItem; - } - } else { - lastSelectionEvent = event; - event.item = selectedItem; - } - - if ((style & SWT.SINGLE) != 0) { - if (!selectedItem.isSelected ()) { - if (event.button == 1) { - selectItem (selectedItem, false); - setFocusItem (selectedItem, true); - redrawItem (selectedItem.availableIndex, true); - if (sendSelection) { - Event newEvent = new Event (); - newEvent.item = selectedItem; - postEvent (SWT.Selection, newEvent); - } - return; - } - if ((event.stateMask & (SWT.CTRL | SWT.SHIFT)) == 0) { - selectItem (selectedItem, false); - setFocusItem (selectedItem, true); - redrawItem (selectedItem.availableIndex, true); - if (sendSelection) { - Event newEvent = new Event (); - newEvent.item = selectedItem; - postEvent (SWT.Selection, newEvent); - } - return; - } - } - /* item is selected */ - if (event.button == 1) { - /* fire a selection event, though the selection did not change */ - if (sendSelection) { - Event newEvent = new Event (); - newEvent.item = selectedItem; - postEvent (SWT.Selection, newEvent); - } - return; - } - } - /* SWT.MULTI */ - if (!selectedItem.isSelected ()) { - if (event.button == 1) { - if ((event.stateMask & (SWT.CTRL | SWT.SHIFT)) == SWT.SHIFT) { - if (anchorItem == null) anchorItem = focusItem; - int anchorIndex = anchorItem.availableIndex; - int selectIndex = selectedItem.availableIndex; - TreeItem[] newSelection = new TreeItem [Math.abs (anchorIndex - selectIndex) + 1]; - int step = anchorIndex < selectIndex ? 1 : -1; - int writeIndex = 0; - for (int i = anchorIndex; i != selectIndex; i += step) { - newSelection [writeIndex++] = availableItems [i]; - } - newSelection [writeIndex] = availableItems [selectIndex]; - setSelection (newSelection, false); - setFocusItem (selectedItem, true); - redrawItems ( - Math.min (anchorIndex, selectIndex), - Math.max (anchorIndex, selectIndex), - true); - if (sendSelection) { - Event newEvent = new Event (); - newEvent.item = selectedItem; - postEvent (SWT.Selection, newEvent); - } - return; - } - selectItem (selectedItem, (event.stateMask & SWT.CTRL) != 0); - setFocusItem (selectedItem, true); - redrawItem (selectedItem.availableIndex, true); - if (sendSelection) { - Event newEvent = new Event (); - newEvent.item = selectedItem; - postEvent (SWT.Selection, newEvent); - } - return; - } - /* button 3 */ - if ((event.stateMask & (SWT.CTRL | SWT.SHIFT)) == 0) { - selectItem (selectedItem, false); - setFocusItem (selectedItem, true); - redrawItem (selectedItem.availableIndex, true); - if (sendSelection) { - Event newEvent = new Event (); - newEvent.item = selectedItem; - postEvent (SWT.Selection, newEvent); - } - return; - } - } - /* item is selected */ - if (event.button != 1) return; - if ((event.stateMask & SWT.CTRL) != 0) { - removeSelectedItem (getSelectionIndex (selectedItem)); - setFocusItem (selectedItem, true); - redrawItem (selectedItem.availableIndex, true); - if (sendSelection) { - Event newEvent = new Event (); - newEvent.item = selectedItem; - postEvent (SWT.Selection, newEvent); - } - return; - } - if ((event.stateMask & SWT.SHIFT) != 0) { - if (anchorItem == null) anchorItem = focusItem; - int anchorIndex = anchorItem.availableIndex; - int selectIndex = selectedItem.availableIndex; - TreeItem[] newSelection = new TreeItem [Math.abs (anchorIndex - selectIndex) + 1]; - int step = anchorIndex < selectIndex ? 1 : -1; - int writeIndex = 0; - for (int i = anchorIndex; i != selectIndex; i += step) { - newSelection [writeIndex++] = availableItems [i]; - } - newSelection [writeIndex] = availableItems [selectIndex]; - setSelection (newSelection, false); - setFocusItem (selectedItem, true); - redrawItems ( - Math.min (anchorIndex, selectIndex), - Math.max (anchorIndex, selectIndex), - true); - if (sendSelection) { - Event newEvent = new Event (); - newEvent.item = selectedItem; - postEvent (SWT.Selection, newEvent); - } - return; - } - selectItem (selectedItem, false); - setFocusItem (selectedItem, true); - redrawItem (selectedItem.availableIndex, true); - if (sendSelection) { - Event newEvent = new Event (); - newEvent.item = selectedItem; - postEvent (SWT.Selection, newEvent); - } -} -void onMouseUp (Event event) { - int index = (event.y - getHeaderHeight ()) / itemHeight + topIndex; - if (!(0 <= index && index < availableItemsCount)) return; /* not on an available item */ - lastClickedItem = availableItems [index]; -} -void onPageDown (int stateMask) { - int visibleItemCount = (clientArea.height - getHeaderHeight ()) / itemHeight; - if ((stateMask & (SWT.CTRL | SWT.SHIFT)) == 0) { - /* PageDown with no modifiers */ - int newFocusIndex = focusItem.availableIndex + visibleItemCount - 1; - newFocusIndex = Math.min (newFocusIndex, availableItemsCount - 1); - if (newFocusIndex == focusItem.availableIndex) return; - TreeItem item = availableItems [newFocusIndex]; - selectItem (item, false); - setFocusItem (item, true); - showItem (item); - redrawItem (item.availableIndex, true); - return; - } - if ((stateMask & (SWT.CTRL | SWT.SHIFT)) == (SWT.CTRL | SWT.SHIFT)) { - /* CTRL+Shift+PageDown */ - int newTopIndex = topIndex + visibleItemCount; - newTopIndex = Math.min (newTopIndex, availableItemsCount - visibleItemCount); - if (newTopIndex == topIndex) return; - setTopItem (availableItems [newTopIndex]); - return; - } - if ((style & SWT.SINGLE) != 0) { - if ((stateMask & SWT.SHIFT) != 0) { - /* Shift+PageDown */ - int newFocusIndex = focusItem.availableIndex + visibleItemCount - 1; - newFocusIndex = Math.min (newFocusIndex, availableItemsCount - 1); - if (newFocusIndex == focusItem.availableIndex) return; - TreeItem item = availableItems [newFocusIndex]; - selectItem (item, false); - setFocusItem (item, true); - showItem (item); - redrawItem (item.availableIndex, true); - return; - } - /* CTRL+PageDown */ - int newTopIndex = topIndex + visibleItemCount; - newTopIndex = Math.min (newTopIndex, availableItemsCount - visibleItemCount); - if (newTopIndex == topIndex) return; - setTopItem (availableItems [newTopIndex]); - return; - } - /* SWT.MULTI */ - if ((stateMask & SWT.CTRL) != 0) { - /* CTRL+PageDown */ - int bottomIndex = Math.min (topIndex + visibleItemCount - 1, availableItemsCount - 1); - if (focusItem.availableIndex != bottomIndex) { - /* move focus to bottom item in viewport */ - setFocusItem (availableItems [bottomIndex], true); - redrawItem (bottomIndex, true); - } else { - /* at bottom of viewport, so set focus to bottom item one page down */ - int newFocusIndex = Math.min (availableItemsCount - 1, bottomIndex + visibleItemCount); - if (newFocusIndex == focusItem.availableIndex) return; - setFocusItem (availableItems [newFocusIndex], true); - showItem (availableItems [newFocusIndex]); - redrawItem (newFocusIndex, true); - } - return; - } - /* Shift+PageDown */ - if (anchorItem == null) anchorItem = focusItem; - int anchorIndex = anchorItem.availableIndex; - int bottomIndex = Math.min (topIndex + visibleItemCount - 1, availableItemsCount - 1); - int selectIndex; - if (focusItem.availableIndex != bottomIndex) { - /* select from focus to bottom item in viewport */ - selectIndex = bottomIndex; - } else { - /* already at bottom of viewport, so select to bottom of one page down */ - selectIndex = Math.min (availableItemsCount - 1, bottomIndex + visibleItemCount); - if (selectIndex == focusItem.availableIndex && focusItem.isSelected ()) return; - } - TreeItem selectedItem = availableItems [selectIndex]; - TreeItem[] newSelection = new TreeItem [Math.abs (anchorIndex - selectIndex) + 1]; - int step = anchorIndex < selectIndex ? 1 : -1; - int writeIndex = 0; - for (int i = anchorIndex; i != selectIndex; i += step) { - newSelection [writeIndex++] = availableItems [i]; - } - newSelection [writeIndex] = availableItems [selectIndex]; - setSelection (newSelection, false); - setFocusItem (selectedItem, true); - showItem (selectedItem); - Event newEvent = new Event (); - newEvent.item = selectedItem; - postEvent (SWT.Selection, newEvent); -} -void onPageUp (int stateMask) { - int visibleItemCount = (clientArea.height - getHeaderHeight ()) / itemHeight; - if ((stateMask & (SWT.CTRL | SWT.SHIFT)) == 0) { - /* PageUp with no modifiers */ - int newFocusIndex = Math.max (0, focusItem.availableIndex - visibleItemCount + 1); - if (newFocusIndex == focusItem.availableIndex) return; - TreeItem item = availableItems [newFocusIndex]; - selectItem (item, false); - setFocusItem (item, true); - showItem (item); - redrawItem (item.availableIndex, true); - return; - } - if ((stateMask & (SWT.CTRL | SWT.SHIFT)) == (SWT.CTRL | SWT.SHIFT)) { - /* CTRL+Shift+PageUp */ - int newTopIndex = Math.max (0, topIndex - visibleItemCount); - if (newTopIndex == topIndex) return; - setTopItem (availableItems [newTopIndex]); - return; - } - if ((style & SWT.SINGLE) != 0) { - if ((stateMask & SWT.SHIFT) != 0) { - /* Shift+PageUp */ - int newFocusIndex = Math.max (0, focusItem.availableIndex - visibleItemCount + 1); - if (newFocusIndex == focusItem.availableIndex) return; - TreeItem item = availableItems [newFocusIndex]; - selectItem (item, false); - setFocusItem (item, true); - showItem (item); - redrawItem (item.availableIndex, true); - return; - } - /* CTRL+PageUp */ - int newTopIndex = Math.max (0, topIndex - visibleItemCount); - if (newTopIndex == topIndex) return; - setTopItem (availableItems [newTopIndex]); - return; - } - /* SWT.MULTI */ - if ((stateMask & SWT.CTRL) != 0) { - /* CTRL+PageUp */ - if (focusItem.availableIndex != topIndex) { - /* move focus to top item in viewport */ - setFocusItem (availableItems [topIndex], true); - redrawItem (topIndex, true); - } else { - /* at top of viewport, so set focus to top item one page up */ - int newFocusIndex = Math.max (0, focusItem.availableIndex - visibleItemCount); - if (newFocusIndex == focusItem.availableIndex) return; - setFocusItem (availableItems [newFocusIndex], true); - showItem (availableItems [newFocusIndex]); - redrawItem (newFocusIndex, true); - } - return; - } - /* Shift+PageUp */ - if (anchorItem == null) anchorItem = focusItem; - int anchorIndex = anchorItem.availableIndex; - int selectIndex; - if (focusItem.availableIndex != topIndex) { - /* select from focus to top item in viewport */ - selectIndex = topIndex; - } else { - /* already at top of viewport, so select to top of one page up */ - selectIndex = Math.max (0, topIndex - visibleItemCount); - if (selectIndex == focusItem.availableIndex && focusItem.isSelected ()) return; - } - TreeItem selectedItem = availableItems [selectIndex]; - TreeItem[] newSelection = new TreeItem [Math.abs (anchorIndex - selectIndex) + 1]; - int step = anchorIndex < selectIndex ? 1 : -1; - int writeIndex = 0; - for (int i = anchorIndex; i != selectIndex; i += step) { - newSelection [writeIndex++] = availableItems [i]; - } - newSelection [writeIndex] = availableItems [selectIndex]; - setSelection (newSelection, false); - setFocusItem (selectedItem, true); - showItem (selectedItem); - Event newEvent = new Event (); - newEvent.item = selectedItem; - postEvent (SWT.Selection, newEvent); -} -void onPaint (Event event) { - TreeColumn[] orderedColumns = getOrderedColumns (); - GC gc = event.gc; - Rectangle clipping = gc.getClipping (); - int headerHeight = getHeaderHeight (); - int numColumns = orderedColumns.length; - int startColumn = -1, endColumn = -1; - if (numColumns > 0) { - startColumn = computeColumnIntersect (clipping.x, 0); - if (startColumn != -1) { /* the clip x is within a column's bounds */ - endColumn = computeColumnIntersect (clipping.x + clipping.width, startColumn); - if (endColumn == -1) endColumn = numColumns - 1; - } - } else { - startColumn = endColumn = 0; - } - - /* Determine the items to be painted */ - int startIndex = (clipping.y - headerHeight) / itemHeight + topIndex; - int endIndex = -1; - if (startIndex < availableItemsCount) { - endIndex = startIndex + Compatibility.ceil (clipping.height, itemHeight); - } - startIndex = Math.max (0, startIndex); - endIndex = Math.min (endIndex, availableItemsCount - 1); - - /* fill background not handled by items */ - gc.setBackground (getBackground ()); - gc.setClipping (clipping); - int bottomY = endIndex >= 0 ? getItemY (availableItems [endIndex]) + itemHeight : 0; - int fillHeight = Math.max (0, clientArea.height - bottomY); - if (fillHeight > 0) { /* space below bottom item */ - drawBackground (gc, 0, bottomY, clientArea.width, fillHeight); - } - if (columns.length > 0) { - TreeColumn column = orderedColumns [orderedColumns.length - 1]; /* last column */ - int rightX = column.getX () + column.width; - if (rightX < clientArea.width) { - drawBackground (gc, rightX, 0, clientArea.width - rightX, clientArea.height - fillHeight); - } - } - - /* paint the items */ - boolean noFocusDraw = false; - int[] lineDash = gc.getLineDash (); - int lineWidth = gc.getLineWidth (); - for (int i = startIndex; i <= Math.min (endIndex, availableItemsCount - 1); i++) { - TreeItem item = availableItems [i]; - if (!item.isDisposed ()) { /* ensure that item was not disposed in a callback */ - if (startColumn == -1) { - /* indicates that region to paint is to the right of the last column */ - noFocusDraw = item.paint (gc, null, true) || noFocusDraw; - } else { - if (numColumns == 0) { - noFocusDraw = item.paint (gc, null, false) || noFocusDraw; - } else { - for (int j = startColumn; j <= Math.min (endColumn, columns.length - 1); j++) { - if (!item.isDisposed ()) { /* ensure that item was not disposed in a callback */ - noFocusDraw = item.paint (gc, orderedColumns [j], false) || noFocusDraw; - } - if (isDisposed () || gc.isDisposed ()) return; /* ensure that receiver was not disposed in a callback */ - } - } - } - } - if (isDisposed () || gc.isDisposed ()) return; /* ensure that receiver was not disposed in a callback */ - } - - /* repaint grid lines */ - gc.setClipping(clipping); - gc.setLineWidth (lineWidth); - if (linesVisible) { - gc.setForeground (display.getSystemColor (SWT.COLOR_WIDGET_LIGHT_SHADOW)); - gc.setLineDash (lineDash); - if (numColumns > 0 && startColumn != -1) { - /* vertical column lines */ - for (int i = startColumn; i <= endColumn; i++) { - int x = orderedColumns [i].getX () + orderedColumns [i].width - 1; - gc.drawLine (x, clipping.y, x, clipping.y + clipping.height); - } - } - /* horizontal item lines */ - bottomY = clipping.y + clipping.height; - int rightX = clipping.x + clipping.width; - int y = (clipping.y - headerHeight) / itemHeight * itemHeight + headerHeight; - while (y <= bottomY) { - gc.drawLine (clipping.x, y, rightX, y); - y += itemHeight; - } - } - - /* draw focus rectangle */ - if (!noFocusDraw && isFocusControl ()) { - if (focusItem != null) { - Rectangle focusBounds = focusItem.getFocusBounds (); - if (focusBounds.width > 0) { - gc.setForeground (display.getSystemColor (SWT.COLOR_BLACK)); - gc.setClipping (focusBounds); - if (focusItem.isSelected ()) { - gc.setLineDash (new int[] {2, 2}); - } else { - gc.setLineDash (new int[] {1, 1}); - } - gc.drawFocus (focusBounds.x, focusBounds.y, focusBounds.width, focusBounds.height); - } - } else { - /* no items, so draw focus border around Tree */ - int y = headerHeight + 1; - int width = Math.max (0, clientArea.width - 2); - int height = Math.max (0, clientArea.height - headerHeight - 2); - gc.setForeground (display.getSystemColor (SWT.COLOR_BLACK)); - gc.setClipping (1, y, width, height); - gc.setLineDash (new int[] {1, 1}); - gc.drawFocus (1, y, width, height); - } - } - - /* draw insert mark */ - if (insertMarkItem != null) { - Rectangle focusBounds = insertMarkItem.getFocusBounds (); - gc.setForeground (display.getSystemColor (SWT.COLOR_BLACK)); - gc.setClipping (focusBounds); - gc.setLineDash (lineDash); - if (insertMarkPrecedes) { - gc.drawLine (focusBounds.x, focusBounds.y, focusBounds.x + focusBounds.width, focusBounds.y); - } else { - int y = focusBounds.y + focusBounds.height - 1; - gc.drawLine (focusBounds.x, y, focusBounds.x + focusBounds.width, y); - } - } -} -void onResize (Event event) { - clientArea = getClientArea (); - /* vertical scrollbar */ - ScrollBar vBar = getVerticalBar (); - if (vBar != null) { - int clientHeight = (clientArea.height - getHeaderHeight ()) / itemHeight; - int thumb = Math.min (clientHeight, availableItemsCount); - vBar.setThumb (thumb); - vBar.setPageIncrement (thumb); - int index = vBar.getSelection (); - if (index != topIndex) { - topIndex = index; - redraw (); - } - boolean visible = clientHeight < availableItemsCount; - if (visible != vBar.getVisible ()) { - vBar.setVisible (visible); - clientArea = getClientArea (); - } - } - - /* horizontal scrollbar */ - ScrollBar hBar = getHorizontalBar (); - if (hBar != null) { - int hBarMaximum = hBar.getMaximum (); - int thumb = Math.min (clientArea.width, hBarMaximum); - hBar.setThumb (thumb); - hBar.setPageIncrement (thumb); - horizontalOffset = hBar.getSelection (); - boolean visible = clientArea.width < hBarMaximum; - if (visible != hBar.getVisible ()) { - hBar.setVisible (visible); - clientArea = getClientArea (); - } - } - - /* header */ - int headerHeight = Math.max (fontHeight, headerImageHeight) + 2 * getHeaderPadding (); - header.setSize (clientArea.width, headerHeight); - - /* if this is the focus control but there are no items then the boundary focus ring must be repainted */ - if (availableItemsCount == 0 && isFocusControl ()) redraw (); -} -void onScrollHorizontal (Event event) { - ScrollBar hBar = getHorizontalBar (); - if (hBar == null) return; - int newSelection = hBar.getSelection (); - update (); - if (availableItemsCount > 0) { - GC gc = new GC (this); - gc.copyArea ( - 0, 0, - clientArea.width, clientArea.height, - horizontalOffset - newSelection, 0); - gc.dispose (); - } else { - redraw (); /* ensure that static focus rectangle updates properly */ - } - if (drawCount <= 0 && header.isVisible ()) { - header.update (); - Rectangle headerClientArea = header.getClientArea (); - GC gc = new GC (header); - gc.copyArea ( - 0, 0, - headerClientArea.width, headerClientArea.height, - horizontalOffset - newSelection, 0); - gc.dispose (); - } - horizontalOffset = newSelection; -} -void onScrollVertical (Event event) { - ScrollBar vBar = getVerticalBar (); - if (vBar != null) { - int newSelection = vBar.getSelection (); - update (); - GC gc = new GC (this); - gc.copyArea ( - 0, 0, - clientArea.width, clientArea.height, - 0, (topIndex - newSelection) * itemHeight); - gc.dispose (); - topIndex = newSelection; - } -} -void onSpace () { - if (focusItem == null) return; - if (!focusItem.isSelected ()) { - selectItem (focusItem, (style & SWT.MULTI) != 0); - redrawItem (focusItem.availableIndex, true); - } - if ((style & SWT.CHECK) != 0) { - focusItem.setChecked (!focusItem.checked); - } - showItem (focusItem); - Event event = new Event (); - event.item = focusItem; - postEvent (SWT.Selection, event); - if ((style & SWT.CHECK) == 0) return; - - /* SWT.CHECK */ - event = new Event (); - event.item = focusItem; - event.detail = SWT.CHECK; - postEvent (SWT.Selection, event); -} -/* - * The current focus item is about to become unavailable, so reassign focus. - */ -void reassignFocus () { - if (focusItem == null) return; - - /* reassign to current focus' parent item if it has one */ - if (focusItem.parentItem != null) { - TreeItem item = focusItem.parentItem; - setFocusItem (item, false); - showItem (item); - return; - } - - /* - * reassign to the previous root-level item if there is one, or the next - * root-level item otherwise - */ - int index = focusItem.getIndex (); - if (index != 0) { - index--; - } else { - index++; - } - if (index < items.length) { - TreeItem item = items [index]; - setFocusItem (item, false); - showItem (item); - } else { - setFocusItem (null, false); /* no items left */ - } -} -public void redraw () { - checkWidget (); - if (drawCount <= 0) super.redraw (); -} -public void redraw (int x, int y, int width, int height, boolean all) { - checkWidget (); - if (drawCount <= 0) super.redraw (x, y, width, height, all); -} -/* - * Redraws from the specified index down to the last available item inclusive. Note - * that the redraw bounds do not extend beyond the current last item, so clients - * that reduce the number of available items should use #redrawItems(int,int) instead - * to ensure that redrawing extends down to the previous bottom item boundary. - */ -void redrawFromItemDownwards (int index) { - redrawItems (index, availableItemsCount - 1, false); -} -/* - * Redraws the tree item at the specified index. It is valid for this index to reside - * beyond the last available item. - */ -void redrawItem (int itemIndex, boolean focusBoundsOnly) { - if (itemIndex == -1) return; - if (itemIndex < availableItemsCount && !availableItems [itemIndex].isInViewport ()) return; - redrawItems (itemIndex, itemIndex, focusBoundsOnly); -} -/* - * Redraws the tree between the start and end item indices inclusive. It is valid - * for the end index value to extend beyond the last available item. - */ -void redrawItems (int startIndex, int endIndex, boolean focusBoundsOnly) { - if (drawCount > 0) return; - - int startY = (startIndex - topIndex) * itemHeight + getHeaderHeight (); - int height = (endIndex - startIndex + 1) * itemHeight; - if (focusBoundsOnly) { - boolean custom = hooks (SWT.EraseItem) || hooks (SWT.PaintItem); - if (!custom && columns.length > 0) { - TreeColumn lastColumn; - if ((style & SWT.FULL_SELECTION) != 0) { - TreeColumn[] orderedColumns = getOrderedColumns (); - lastColumn = orderedColumns [orderedColumns.length - 1]; - } else { - lastColumn = columns [0]; - } - int rightX = lastColumn.getX () + lastColumn.getWidth (); - if (rightX <= 0) return; /* focus column(s) not visible */ - } - endIndex = Math.min (endIndex, availableItemsCount - 1); - for (int i = startIndex; i <= endIndex; i++) { - TreeItem item = availableItems [i]; - if (item.isInViewport ()) { - /* if custom painting is being done then repaint the full item */ - if (custom) { - redraw (0, getItemY (item), clientArea.width, itemHeight, false); - } else { - /* repaint the item's focus bounds */ - Rectangle bounds = item.getFocusBounds (); - redraw (bounds.x, startY, bounds.width, height, false); - } - } - } - } else { - redraw (0, startY, clientArea.width, height, false); - } -} -/** - * Removes all of the items from the receiver. - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - */ -public void removeAll () { - checkWidget (); - if (items.length == 0) return; - setRedraw (false); - - setFocusItem (null, false); - for (int i = 0; i < items.length; i++) { - items [i].dispose (false); - } - items = availableItems = selectedItems = NO_ITEMS; - availableItemsCount = topIndex = 0; - anchorItem = lastClickedItem = insertMarkItem = null; - lastSelectionEvent = null; - inExpand = false; - ScrollBar vBar = getVerticalBar (); - if (vBar != null) { - vBar.setMaximum (1); - vBar.setVisible (false); - } - if (columns.length == 0) { - horizontalOffset = 0; - ScrollBar hBar = getHorizontalBar (); - if (hBar != null) { - hBar.setMaximum (1); - hBar.setVisible (false); - } - } - - setRedraw (true); -} -String removeMnemonics (String string) { - /* removes single ampersands and preserves double-ampersands */ - char [] chars = new char [string.length ()]; - string.getChars (0, chars.length, chars, 0); - int i = 0, j = 0; - for ( ; i < chars.length; i++, j++) { - if (chars[i] == '&') { - if (++i == chars.length) break; - if (chars[i] == '&') { - chars[j++] = chars[i - 1]; - } - } - chars[j] = chars[i]; - } - if (i == j) return string; - return new String (chars, 0, j); -} -void removeSelectedItem (int index) { - TreeItem[] newSelectedItems = new TreeItem [selectedItems.length - 1]; - System.arraycopy (selectedItems, 0, newSelectedItems, 0, index); - System.arraycopy (selectedItems, index + 1, newSelectedItems, index, newSelectedItems.length - index); - selectedItems = newSelectedItems; -} -/** - * Removes the listener from the collection of listeners who will - * be notified when the user changes the receiver's selection. - * - * @param listener the listener which should no longer be notified - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @see SelectionListener - * @see #addSelectionListener - */ -public void removeSelectionListener (SelectionListener listener) { - checkWidget (); - if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); - removeListener (SWT.Selection, listener); - removeListener (SWT.DefaultSelection, listener); -} -/** - * Removes the listener from the collection of listeners who will - * be notified when items in the receiver are expanded or collapsed. - * - * @param listener the listener which should no longer be notified - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @see TreeListener - * @see #addTreeListener - */ -public void removeTreeListener (TreeListener listener) { - checkWidget (); - if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); - removeListener (SWT.Expand, listener); - removeListener (SWT.Collapse, listener); -} -/** - * Selects an item in the receiver. If the item was already - * selected, it remains selected. - * - * @param item the item to be selected - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if the item is null</li> - * <li>ERROR_INVALID_ARGUMENT - if the item has been disposed</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @since 3.4 - */ -public void select (TreeItem item) { - checkWidget (); - if (item == null) error (SWT.ERROR_NULL_ARGUMENT); - if (item.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT); - selectItem (item, (style & SWT.MULTI) != 0); - redrawItem (item.availableIndex, true); -} -/** - * Selects all of the items in the receiver. - * <p> - * If the receiver is single-select, do nothing. - * </p> - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - */ -public void selectAll () { - checkWidget (); - if ((style & SWT.SINGLE) != 0) return; - selectedItems = new TreeItem [availableItemsCount]; - System.arraycopy (availableItems, 0, selectedItems, 0, availableItemsCount); - redraw (); -} -void selectItem (TreeItem item, boolean addToSelection) { - TreeItem[] oldSelectedItems = selectedItems; - if (!addToSelection || (style & SWT.SINGLE) != 0) { - selectedItems = new TreeItem[] {item}; - for (int i = 0; i < oldSelectedItems.length; i++) { - if (oldSelectedItems [i] != item) { - redrawItem (oldSelectedItems [i].availableIndex, true); - } - } - } else { - if (item.isSelected ()) return; - selectedItems = new TreeItem [selectedItems.length + 1]; - System.arraycopy (oldSelectedItems, 0, selectedItems, 0, oldSelectedItems.length); - selectedItems [selectedItems.length - 1] = item; - } -} -public void setBackground (Color color) { - checkWidget (); - if (color == null) color = display.getSystemColor (SWT.COLOR_LIST_BACKGROUND); - super.setBackground (color); -} -/** - * Sets the order that the items in the receiver should - * be displayed in to the given argument which is described - * in terms of the zero-relative ordering of when the items - * were added. - * - * @param order the new order to display the items - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if the item order is null</li> - * <li>ERROR_INVALID_ARGUMENT - if the item order is not the same length as the number of items</li> - * </ul> - * - * @see Tree#getColumnOrder() - * @see TreeColumn#getMoveable() - * @see TreeColumn#setMoveable(boolean) - * @see SWT#Move - * - * @since 3.2 - */ -public void setColumnOrder (int [] order) { - checkWidget (); - if (order == null) error (SWT.ERROR_NULL_ARGUMENT); - if (columns.length == 0) { - if (order.length != 0) error (SWT.ERROR_INVALID_ARGUMENT); - return; - } - if (order.length != columns.length) error (SWT.ERROR_INVALID_ARGUMENT); - boolean reorder = false; - boolean [] seen = new boolean [columns.length]; - int[] oldOrder = getColumnOrder (); - for (int i = 0; i < order.length; i++) { - int index = order [i]; - if (index < 0 || index >= columns.length) error (SWT.ERROR_INVALID_RANGE); - if (seen [index]) error (SWT.ERROR_INVALID_ARGUMENT); - seen [index] = true; - if (index != oldOrder [i]) reorder = true; - } - if (!reorder) return; - - headerHideToolTip (); - int[] oldX = new int [columns.length]; - for (int i = 0; i < columns.length; i++) { - oldX [i] = columns [i].getX (); - } - orderedColumns = new TreeColumn [order.length]; - for (int i = 0; i < order.length; i++) { - orderedColumns [i] = columns [order [i]]; - } - /* - * If the first ordered column has changed then the old and new ordered column 0's - * have to recompute their display texts since they will now have just gained/lost - * space as a result of the hierarchy decorations that appear in ordered column 0. - */ - if (oldOrder [0] != order [0]) { - orderedCol0imageWidth = columns [order [0]].itemImageWidth; - GC gc = new GC (this); - for (int i = 0; i < items.length; i++) { - items [i].updateColumnWidth (columns [oldOrder [0]], gc); - items [i].updateColumnWidth (columns [order [0]], gc); - } - gc.dispose(); - } - for (int i = 0; i < orderedColumns.length; i++) { - TreeColumn column = orderedColumns [i]; - if (!column.isDisposed () && column.getX () != oldX [column.getIndex ()]) { - column.sendEvent (SWT.Move); - } - } - - redraw (); - if (drawCount <= 0 && header.isVisible ()) header.redraw (); -} -void setFocusItem (TreeItem item, boolean redrawOldFocus) { - if (item == focusItem) return; - TreeItem oldFocusItem = focusItem; - focusItem = item; - if (redrawOldFocus && oldFocusItem != null) { - redrawItem (oldFocusItem.availableIndex, true); - } -} -public void setFont (Font value) { - checkWidget (); - Font oldFont = getFont (); - super.setFont (value); - Font font = getFont (); - if (font.equals (oldFont)) return; - - GC gc = new GC (this); - - /* recompute the receiver's cached font height and item height values */ - fontHeight = gc.getFontMetrics ().getHeight (); - setItemHeight (Math.max (fontHeight, imageHeight) + 2 * getCellPadding ()); - Point headerSize = header.getSize (); - int newHeaderHeight = Math.max (fontHeight, headerImageHeight) + 2 * getHeaderPadding (); - if (headerSize.y != newHeaderHeight) { - header.setSize (headerSize.x, newHeaderHeight); - } - header.setFont (font); - - /* - * Notify all columns and items of the font change so that elements that - * use the receiver's font can recompute their cached string widths. - */ - for (int i = 0; i < columns.length; i++) { - columns [i].updateFont (gc); - } - for (int i = 0; i < items.length; i++) { - items [i].updateFont (gc); - } - - gc.dispose (); - - if (drawCount <= 0 && header.isVisible ()) header.redraw (); - - /* update scrollbars */ - if (columns.length == 0) updateHorizontalBar (); - ScrollBar vBar = getVerticalBar (); - if (vBar != null) { - int thumb = (clientArea.height - getHeaderHeight ()) / itemHeight; - if (vBar.getThumb () != thumb) { - vBar.setThumb (thumb); - vBar.setPageIncrement (thumb); - } - topIndex = vBar.getSelection (); - vBar.setVisible (thumb < vBar.getMaximum ()); - } - redraw (); -} -public void setForeground (Color color) { - checkWidget (); - if (color == null) color = display.getSystemColor (SWT.COLOR_LIST_FOREGROUND); - super.setForeground (color); -} -void setHeaderImageHeight (int value) { - headerImageHeight = value; - Point headerSize = header.getSize (); - int newHeaderHeight = Math.max (fontHeight, headerImageHeight) + 2 * getHeaderPadding (); - if (headerSize.y != newHeaderHeight) { - header.setSize (headerSize.x, newHeaderHeight); - } -} -/** - * Marks the receiver's header as visible if the argument is <code>true</code>, - * and marks it invisible otherwise. - * <p> - * If one of the receiver's ancestors is not visible or some - * other condition makes the receiver not visible, marking - * it visible may not actually cause it to be displayed. - * </p> - * - * @param show the new visibility state - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @since 3.1 - */ -public void setHeaderVisible (boolean value) { - checkWidget (); - if (header.getVisible () == value) return; /* no change */ - headerHideToolTip (); - header.setVisible (value); - updateVerticalBar (); - redraw (); -} -void setImageHeight (int value) { - imageHeight = value; - setItemHeight (Math.max (fontHeight, imageHeight) + 2 * getCellPadding ()); -} -/** - * Display a mark indicating the point at which an item will be inserted. - * The drop insert item has a visual hint to show where a dragged item - * will be inserted when dropped on the tree. - * - * @param item the insert item. Null will clear the insertion mark. - * @param before true places the insert mark above 'item'. false places - * the insert mark below 'item'. - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_INVALID_ARGUMENT - if the item has been disposed</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - */ -public void setInsertMark (TreeItem item, boolean before) { - checkWidget (); - if (item != null && item.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT); - if (item != null && item.parent != this) return; - if (item == insertMarkItem && before == insertMarkPrecedes) return; /* no change */ - - TreeItem oldInsertItem = insertMarkItem; - insertMarkItem = item; - insertMarkPrecedes = before; - if (oldInsertItem != null && oldInsertItem.availableIndex != -1) { - redrawItem (oldInsertItem.availableIndex, true); - } - if (item != null && item != oldInsertItem && item.availableIndex != -1) { - redrawItem (item.availableIndex, true); - } -} -/** - * Sets the number of root-level items contained in the receiver. - * - * @param count the number of items - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @since 3.2 - */ -public void setItemCount (int count) { - checkWidget (); - count = Math.max (0, count); - if (count == items.length) return; - int oldCount = availableItemsCount; - int redrawStart, redrawEnd; - - /* if the new item count is less than the current count then remove all excess items from the end */ - if (count < items.length) { - redrawStart = count > 0 ? items [count - 1].availableIndex : 0; - redrawEnd = availableItemsCount - 1; - availableItemsCount = items [count].availableIndex; - for (int i = count; i < items.length; i++) { - items [i].dispose (false); - } - if (count == 0) { - items = Tree.NO_ITEMS; - } else { - TreeItem[] newItems = new TreeItem [count]; - System.arraycopy (items, 0, newItems, 0, count); - items = newItems; - } - - int newSelectedCount = 0; - for (int i = 0; i < selectedItems.length; i++) { - if (!selectedItems [i].isDisposed ()) newSelectedCount++; - } - if (newSelectedCount != selectedItems.length) { - /* one or more selected items have been disposed */ - TreeItem[] newSelectedItems = new TreeItem [newSelectedCount]; - int pos = 0; - for (int i = 0; i < selectedItems.length; i++) { - TreeItem item = selectedItems [i]; - if (!item.isDisposed ()) { - newSelectedItems [pos++] = item; - } - } - selectedItems = newSelectedItems; - } - - if (insertMarkItem != null && insertMarkItem.isDisposed ()) insertMarkItem = null; - if (lastClickedItem != null && lastClickedItem.isDisposed ()) lastClickedItem = null; - if (anchorItem != null && anchorItem.isDisposed ()) anchorItem = null; - if (focusItem != null && focusItem.isDisposed ()) { - TreeItem newFocusItem = count > 0 ? items [count - 1] : null; - setFocusItem (newFocusItem, false); - } - if (columns.length == 0) updateHorizontalBar (); - } else { - int grow = count - items.length; - redrawStart = items.length == 0 ? 0 : items [items.length - 1].availableIndex; - redrawEnd = availableItemsCount + grow - 1; - TreeItem[] newItems = new TreeItem [count]; - System.arraycopy (items, 0, newItems, 0, items.length); - items = newItems; - if (availableItems.length < availableItemsCount + grow) { - TreeItem[] newAvailableItems = new TreeItem [availableItemsCount + grow]; - System.arraycopy (availableItems, 0, newAvailableItems, 0, availableItemsCount); - availableItems = newAvailableItems; - } - for (int i = items.length - grow; i < count; i++) { - TreeItem newItem = new TreeItem (this, SWT.NONE, i, false); - items [i] = newItem; - items [i].availableIndex = availableItemsCount; - availableItems [availableItemsCount++] = newItem; - } - if (oldCount == 0) focusItem = availableItems [0]; - } - - updateVerticalBar (); - /* - * If this is the focus control and the available item count is going from 0->!0 or !0->0 - * then the receiver must be redrawn to ensure that its boundary focus ring is updated. - */ - if ((oldCount == 0 || availableItemsCount == 0) && isFocusControl ()) { - redraw (); - return; - } - redrawItems (redrawStart, redrawEnd, false); -} -boolean setItemHeight (int value) { - boolean update = !customHeightSet || itemHeight < value; - if (update) itemHeight = value; - return update; -} -/** - * Marks the receiver's lines as visible if the argument is <code>true</code>, - * and marks it invisible otherwise. Note that some platforms draw - * grid lines while others may draw alternating row colors. - * <p> - * If one of the receiver's ancestors is not visible or some - * other condition makes the receiver not visible, marking - * it visible may not actually cause it to be displayed. - * </p> - * - * @param show the new visibility state - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @since 3.1 - */ -public void setLinesVisible (boolean value) { - checkWidget (); - if (linesVisible == value) return; /* no change */ - linesVisible = value; - redraw (); -} -public void setMenu (Menu menu) { - super.setMenu (menu); - header.setMenu (menu); -} -public void setRedraw (boolean value) { - checkWidget(); - if (value) { - if (--drawCount == 0) { - if (availableItems.length - availableItemsCount > 3) { - TreeItem[] newAvailableItems = new TreeItem [availableItemsCount]; - System.arraycopy (availableItems, 0, newAvailableItems, 0, availableItemsCount); - availableItems = newAvailableItems; - } - updateVerticalBar (); - updateHorizontalBar (); - } - } else { - drawCount++; - } - super.setRedraw (value); - header.setRedraw (value); -} -/** - * Sets the receiver's selection to the given item. - * The current selection is cleared before the new item is selected. - * <p> - * If the item is not in the receiver, then it is ignored. - * </p> - * - * @param item the item to select - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if the item is null</li> - * <li>ERROR_INVALID_ARGUMENT - if the item has been disposed</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @since 3.2 - */ -public void setSelection (TreeItem item) { - checkWidget (); - if (item == null) error (SWT.ERROR_NULL_ARGUMENT); - setSelection (new TreeItem [] {item}, true); -} -/** - * Sets the receiver's selection to be the given array of items. - * The current selection is cleared before the new items are selected. - * <p> - * Items that are not in the receiver are ignored. - * If the receiver is single-select and multiple items are specified, - * then all items are ignored. - * </p> - * - * @param items the array of items - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if the array of items is null</li> - * <li>ERROR_INVALID_ARGUMENT - if one of the items has been disposed</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @see Tree#deselectAll() - */ -public void setSelection (TreeItem[] items) { - checkWidget (); - if (items == null) error (SWT.ERROR_NULL_ARGUMENT); - setSelection (items, true); -} - -void setSelection (TreeItem[] items, boolean updateViewport) { - if (items.length == 0 || ((style & SWT.SINGLE) != 0 && items.length > 1)) { - deselectAll (); - return; - } - TreeItem[] oldSelection = selectedItems; - - /* remove null and duplicate items */ - int index = 0; - selectedItems = new TreeItem [items.length]; /* initially assume all valid items */ - for (int i = 0; i < items.length; i++) { - TreeItem item = items [i]; - if (item != null && item.parent == this && !item.isSelected ()) { - selectedItems [index++] = item; - } - } - if (index != items.length) { - /* an invalid item was provided so resize the array accordingly */ - TreeItem[] temp = new TreeItem [index]; - System.arraycopy (selectedItems, 0, temp, 0, index); - selectedItems = temp; - } - if (selectedItems.length == 0) { /* no valid items */ - deselectAll (); - return; - } - - for (int i = 0; i < oldSelection.length; i++) { - if (!oldSelection [i].isSelected ()) { - int availableIndex = oldSelection [i].availableIndex; - if (availableIndex != -1) { - redrawItem (availableIndex, true); - } - } - } - if (updateViewport) { - showItem (selectedItems [0]); - setFocusItem (selectedItems [0], true); - } - for (int i = 0; i < selectedItems.length; i++) { - int availableIndex = selectedItems [i].availableIndex; - if (availableIndex != -1) { - redrawItem (availableIndex, true); - } - } -} -/** - * Sets the column used by the sort indicator for the receiver. A null - * value will clear the sort indicator. The current sort column is cleared - * before the new column is set. - * - * @param column the column used by the sort indicator or <code>null</code> - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_INVALID_ARGUMENT - if the column is disposed</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @since 3.2 - */ -public void setSortColumn (TreeColumn column) { - checkWidget (); - if (column != null && column.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT); - if (column == sortColumn) return; - if (sortColumn != null && !sortColumn.isDisposed ()) { - sortColumn.setSortDirection (SWT.NONE); - } - sortColumn = column; - if (sortColumn != null) { - sortColumn.setSortDirection (sortDirection); - } -} -/** - * Sets the direction of the sort indicator for the receiver. The value - * can be one of <code>UP</code>, <code>DOWN</code> or <code>NONE</code>. - * - * @param direction the direction of the sort indicator - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @since 3.2 - */ -public void setSortDirection (int direction) { - checkWidget (); - if (direction != SWT.UP && direction != SWT.DOWN && direction != SWT.NONE) return; - sortDirection = direction; - if (sortColumn == null || sortColumn.isDisposed ()) return; - sortColumn.setSortDirection (sortDirection); -} -/** - * Sets the item which is currently at the top of the receiver. - * This item can change when items are expanded, collapsed, scrolled - * or new items are added or removed. - * - * @param item the item to be shown - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if the item is null</li> - * <li>ERROR_INVALID_ARGUMENT - if the item has been disposed</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @see Tree#getTopItem() - * - * @since 2.1 - */ -public void setTopItem (TreeItem item) { - checkWidget (); - if (item == null) error (SWT.ERROR_NULL_ARGUMENT); - if (item.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT); - if (item.parent != this) return; - - /* item must be available */ - if (!item.isAvailable ()) item.parentItem.expandAncestors (); - - int visibleItemCount = (clientArea.height - getHeaderHeight ()) / itemHeight; - if (availableItemsCount < visibleItemCount) return; - int index = Math.min (item.availableIndex, availableItemsCount - visibleItemCount); - if (topIndex == index) return; - - update (); - int change = topIndex - index; - topIndex = index; - ScrollBar vBar = getVerticalBar (); - if (vBar != null) vBar.setSelection (topIndex); - if (drawCount <= 0) { - GC gc = new GC (this); - gc.copyArea (0, 0, clientArea.width, clientArea.height, 0, change * itemHeight); - gc.dispose (); - } -} -/** - * Shows the column. If the column is already showing in the receiver, - * this method simply returns. Otherwise, the columns are scrolled until - * the column is visible. - * - * @param column the column to be shown - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if the item is null</li> - * <li>ERROR_INVALID_ARGUMENT - if the item has been disposed</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @since 3.1 - */ -public void showColumn (TreeColumn column) { - checkWidget (); - if (column == null) error (SWT.ERROR_NULL_ARGUMENT); - if (column.isDisposed ()) error(SWT.ERROR_INVALID_ARGUMENT); - if (column.parent != this) return; - - int x = column.getX (); - int rightX = x + column.width; - if (0 <= x && rightX <= clientArea.width) return; /* column is fully visible */ - - headerHideToolTip (); - int absX = 0; /* the X of the column irrespective of the horizontal scroll */ - TreeColumn[] orderedColumns = getOrderedColumns (); - for (int i = 0; i < column.getOrderIndex (); i++) { - absX += orderedColumns [i].width; - } - if (x < clientArea.x) { /* column is to left of viewport */ - horizontalOffset = absX; - } else { - horizontalOffset = absX + column.width - clientArea.width; - } - ScrollBar hBar = getHorizontalBar (); - if (hBar != null) hBar.setSelection (horizontalOffset); - redraw (); - if (drawCount <= 0 && header.isVisible ()) header.redraw (); -} -/** - * Shows the item. If the item is already showing in the receiver, - * this method simply returns. Otherwise, the items are scrolled - * and expanded until the item is visible. - * - * @param item the item to be shown - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if the item is null</li> - * <li>ERROR_INVALID_ARGUMENT - if the item has been disposed</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @see Tree#showSelection() - */ -public void showItem (TreeItem item) { - checkWidget (); - if (item == null) error (SWT.ERROR_NULL_ARGUMENT); - if (item.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT); - if (item.parent != this) return; - - /* item must be available */ - if (!item.isAvailable ()) item.parentItem.expandAncestors (); - - int index = item.availableIndex; - int visibleItemCount = (clientArea.height - getHeaderHeight ()) / itemHeight; - /* nothing to do if item is already in viewport */ - if (topIndex <= index && index < topIndex + visibleItemCount) return; - - if (index <= topIndex) { - /* item is above current viewport, so show on top */ - setTopItem (item); - } else { - /* item is below current viewport, so show on bottom */ - visibleItemCount = Math.max (visibleItemCount, 1); /* item to show should be top item */ - setTopItem (availableItems [Math.min (index - visibleItemCount + 1, availableItemsCount - 1)]); - } -} -/** - * Shows the selection. If the selection is already showing in the receiver, - * this method simply returns. Otherwise, the items are scrolled until - * the selection is visible. - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @see Tree#showItem(TreeItem) - */ -public void showSelection () { - checkWidget (); - if (selectedItems.length == 0) return; - showItem (selectedItems [0]); -} -void updateColumnWidth (TreeColumn column, int width) { - headerHideToolTip (); - int oldWidth = column.width; - int columnX = column.getX (); - int x = columnX + oldWidth - 1; /* -1 ensures that grid line is included */ - - update (); - GC gc = new GC (this); - gc.copyArea (x, 0, clientArea.width - x, clientArea.height, columnX + width - 1, 0); /* dest x -1 offsets x's -1 above */ - if (width > oldWidth) { - /* column width grew */ - int change = width - oldWidth + 1; /* +1 offsets x's -1 above */ - /* -1/+1 below ensure that right bound of selection redraws correctly in column */ - redraw (x - 1, 0, change + 1, clientArea.height, false); - } else { - int change = oldWidth - width + 1; /* +1 offsets x's -1 above */ - redraw (clientArea.width - change, 0, change, clientArea.height, false); - } - /* the focus box must be repainted because its stipple may become shifted as a result of its new width */ - if (focusItem != null) redrawItem (focusItem.availableIndex, true); - - GC headerGC = new GC (header); - if (drawCount <= 0 && header.getVisible ()) { - Rectangle headerBounds = header.getClientArea (); - header.update (); - x -= 1; /* -1 ensures that full header column separator is included */ - headerGC.copyArea (x, 0, headerBounds.width - x, headerBounds.height, columnX + width - 2, 0); /* dest x -2 offsets x's -1s above */ - if (width > oldWidth) { - /* column width grew */ - int change = width - oldWidth + 2; /* +2 offsets x's -1s above */ - header.redraw (x, 0, change, headerBounds.height, false); - } else { - int change = oldWidth - width + 2; /* +2 offsets x's -1s above */ - header.redraw (headerBounds.width - change, 0, change, headerBounds.height, false); - } - } - - column.width = width; - - /* - * Notify column and all items of column width change so that display labels - * can be recomputed if needed. - */ - column.updateWidth (headerGC); - headerGC.dispose (); - for (int i = 0; i < items.length; i++) { - items [i].updateColumnWidth (column, gc); - } - gc.dispose (); - - int maximum = 0; - for (int i = 0; i < columns.length; i++) { - maximum += columns [i].width; - } - ScrollBar hBar = getHorizontalBar (); - if (hBar != null) { - hBar.setMaximum (Math.max (1, maximum)); /* setting a value of 0 here is ignored */ - if (hBar.getThumb () != clientArea.width) { - hBar.setThumb (clientArea.width); - hBar.setPageIncrement (clientArea.width); - } - int oldHorizontalOffset = horizontalOffset; /* hBar.setVisible() can modify horizontalOffset */ - hBar.setVisible (clientArea.width < maximum); - int selection = hBar.getSelection (); - if (selection != oldHorizontalOffset) { - horizontalOffset = selection; - redraw (); - if (drawCount <= 0 && header.getVisible ()) header.redraw (); - } - } - - column.sendEvent (SWT.Resize); - TreeColumn[] orderedColumns = getOrderedColumns (); - for (int i = column.getOrderIndex () + 1; i < orderedColumns.length; i++) { - if (!orderedColumns [i].isDisposed ()) { - orderedColumns [i].sendEvent (SWT.Move); - } - } - - if (availableItemsCount == 0) redraw (); /* ensure that static focus rectangle updates properly */ -} -/* - * This is a naive implementation that computes the value from scratch. - */ -void updateHorizontalBar () { - if (drawCount > 0) return; - ScrollBar hBar = getHorizontalBar (); - if (hBar == null) return; - - int maxX = 0; - if (columns.length > 0) { - for (int i = 0; i < columns.length; i++) { - maxX += columns [i].width; - } - } else { - for (int i = 0; i < availableItemsCount; i++) { - Rectangle itemBounds = availableItems [i].getCellBounds (0); - maxX = Math.max (maxX, itemBounds.x + itemBounds.width + horizontalOffset); - } - } - - int clientWidth = clientArea.width; - if (maxX != hBar.getMaximum ()) { - hBar.setMaximum (Math.max (1, maxX)); /* setting a value of 0 here is ignored */ - } - int thumb = Math.min (clientWidth, maxX); - if (thumb != hBar.getThumb ()) { - hBar.setThumb (thumb); - hBar.setPageIncrement (thumb); - } - hBar.setVisible (clientWidth < maxX); - - /* reclaim any space now left on the right */ - if (maxX < horizontalOffset + thumb) { - horizontalOffset = maxX - thumb; - hBar.setSelection (horizontalOffset); - redraw (); - } else { - int selection = hBar.getSelection (); - if (selection != horizontalOffset) { - horizontalOffset = selection; - redraw (); - } - } -} -/* - * Update the horizontal bar, if needed, in response to an item change (eg.- created, - * disposed, expanded, etc.). newRightX is the new rightmost X value of the item, - * and rightXchange is the change that led to the item's rightmost X value becoming - * newRightX (so oldRightX + rightXchange = newRightX) - */ -void updateHorizontalBar (int newRightX, int rightXchange) { - if (drawCount > 0) return; - ScrollBar hBar = getHorizontalBar (); - if (hBar == null) return; - - newRightX += horizontalOffset; - int barMaximum = hBar.getMaximum (); - if (newRightX > barMaximum) { /* item has extended beyond previous maximum */ - hBar.setMaximum (newRightX); - int clientAreaWidth = clientArea.width; - int thumb = Math.min (newRightX, clientAreaWidth); - if (hBar.getThumb () != thumb) { - hBar.setThumb (thumb); - hBar.setPageIncrement (thumb); - } - hBar.setVisible (clientAreaWidth <= newRightX); - return; - } - - int previousRightX = newRightX - rightXchange; - if (previousRightX != barMaximum) { - /* this was not the rightmost item, so just check for client width change */ - int clientAreaWidth = clientArea.width; - int thumb = Math.min (barMaximum, clientAreaWidth); - if (hBar.getThumb () != thumb) { - hBar.setThumb (thumb); - hBar.setPageIncrement (thumb); - } - hBar.setVisible (clientAreaWidth <= barMaximum); - return; - } - updateHorizontalBar (); /* must search for the new rightmost item */ -} -void updateVerticalBar () { - if (drawCount > 0) return; - ScrollBar vBar = getVerticalBar (); - if (vBar == null) return; - - int pageSize = (clientArea.height - getHeaderHeight ()) / itemHeight; - int maximum = Math.max (1, availableItemsCount); - if (maximum != vBar.getMaximum ()) { - vBar.setMaximum (maximum); - } - int thumb = Math.min (pageSize, maximum); - if (thumb != vBar.getThumb ()) { - vBar.setThumb (thumb); - vBar.setPageIncrement (thumb); - } - vBar.setVisible (pageSize < maximum); - - /* reclaim any space now left on the bottom */ - if (maximum < topIndex + thumb) { - topIndex = maximum - thumb; - vBar.setSelection (topIndex); - redraw (); - } else { - int selection = vBar.getSelection (); - if (selection != topIndex) { - topIndex = selection; - redraw (); - } - } -} -} |