/*******************************************************************************
* 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.internal.wpf.*;
import org.eclipse.swt.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.events.*;
/**
* 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.
*
* The item children that may be added to instances of this class
* must be of type TreeItem
.
*
* Style VIRTUAL
is used to create a Tree
whose
* TreeItem
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 TreeItem
population is
* expensive (for example, retrieving values from an external source).
*
* Here is an example of using a Tree
with style VIRTUAL
:
*
* 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);
* }
* });
*
*
* Note that although this class is a subclass of Composite
,
* it does not normally make sense to add Control
children to
* it, or set a layout on it, unless implementing something like a cell
* editor.
*
*
* - Styles:
* - SINGLE, MULTI, CHECK, FULL_SELECTION, VIRTUAL, NO_SCROLL
* - Events:
* - Selection, DefaultSelection, Collapse, Expand, SetData, MeasureItem, EraseItem, PaintItem
*
*
* Note: Only one of the styles SINGLE and MULTI may be specified.
*
* IMPORTANT: This class is not intended to be subclassed.
*
*
* @see Tree, TreeItem, TreeColumn snippets
* @see SWT Example: ControlExample
* @see Sample code and further information
* @noextend This class is not intended to be subclassed by clients.
*/
public class Tree extends Composite {
int gvColumns, parentingHandle, headerTemplate;
int columnCount, itemCount;
TreeItem anchor, lastSelection, unselect, reselect;
TreeColumn [] columns;
byte headerVisibility = OS.Visibility_Collapsed;
boolean ignoreSelection, shiftDown, ctrlDown;
static final String HEADER_PART_NAME = "SWT_PART_HEADER";
static final String SCROLLVIEWER_PART_NAME = "SWT_PART_SCROLLVIEWER";
static final String CHECKBOX_PART_NAME = "SWT_PART_CHECKBOX";
static final String IMAGE_PART_NAME = "SWT_PART_IMAGE";
static final String TEXT_PART_NAME = "SWT_PART_TEXT";
static final String CONTENTPANEL_PART_NAME = "SWT_PART_CONTENTPANEL";
static final String RENDER_PANEL_NAME = "SWT_PART_RENDERPANEL";
static String scrollViewerStyle = "";
/**
* Constructs a new instance of this class given its parent
* and a style value describing its behavior and appearance.
*
* The style value is either one of the style constants defined in
* class SWT
which is applicable to instances of this
* class, or must be built by bitwise OR'ing together
* (that is, using the int
"|" operator) two or more
* of those SWT
style constants. The class description
* lists the style constants that are applicable to the class.
* Style bits are also inherited from superclasses.
*
*
* @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
* - ERROR_NULL_ARGUMENT - if the parent is null
*
* @exception SWTException
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent
* - ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass
*
*
* @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));
}
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;
}
/* WPF is always FULL_SELECTION */
style |= SWT.FULL_SELECTION;
return checkBits (style, SWT.SINGLE, SWT.MULTI, 0, 0, 0, 0);
}
/**
* 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 SelectionListener
* interface.
*
* When widgetSelected
is called, the item field of the event object is valid.
* If the receiver has the SWT.CHECK
style and the check selection changes,
* the event object detail field contains the value SWT.CHECK
.
* widgetDefaultSelected
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.
*
*
* @param listener the listener which should be notified when the user changes the receiver's selection
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the listener is null
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @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 TreeListener
* interface.
*
* @param listener the listener which should be notified
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the listener is null
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @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);
}
int backgroundHandle () {
return parentingHandle;
}
boolean checkData (TreeItem item) {
if ((style & SWT.VIRTUAL) == 0) return true;
if (!item.cached) {
item.cached = true;
int parentItem = OS.FrameworkElement_Parent (item.handle);
int items = OS.ItemsControl_Items (parentItem);
int index = OS.ItemCollection_IndexOf (items, item.handle);
OS.GCHandle_Free (items);
OS.GCHandle_Free (parentItem);
Event event = new Event ();
event.item = item;
event.index = index;
sendEvent (SWT.SetData, event);
if (isDisposed () || item.isDisposed ()) return false;
}
return true;
}
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 SWT.VIRTUAL
style,
* these attributes are requested again as needed.
*
* @param index the index of the item to clear
* @param all true
if all child items of the indexed item should be
* cleared recursively, and false
otherwise
*
* @exception IllegalArgumentException
* - ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list minus 1 (inclusive)
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @see SWT#VIRTUAL
* @see SWT#SetData
*
* @since 3.2
*/
public void clear (int index, boolean all) {
checkWidget ();
if (index < 0 || index >= itemCount) SWT.error (SWT.ERROR_INVALID_RANGE);
clear (handle, index, all);
}
void clear (int parentHandle, int index, boolean all) {
int items = OS.ItemsControl_Items (parentHandle);
TreeItem item = getItem (items, index, false);
if (item != null) {
item.clear ();
if (all) clearAll (item, true);
}
OS.GCHandle_Free (items);
}
/**
* 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 SWT.VIRTUAL
style, these
* attributes are requested again as needed.
*
* @param all true
if all child items should be cleared
* recursively, and false
otherwise
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @see SWT#VIRTUAL
* @see SWT#SetData
*
* @since 3.2
*/
public void clearAll (boolean all) {
checkWidget ();
clearAll (null, all);
}
void clearAll (TreeItem parentItem, boolean all) {
int count = parentItem != null ? parentItem.itemCount : itemCount;
int parentHandle = parentItem != null ? parentItem.handle : handle;
int items = OS.ItemsControl_Items (parentHandle);
for (int i=0; i
* ERROR_NULL_ARGUMENT - if the item is null
* ERROR_INVALID_ARGUMENT - if the item has been disposed
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.4
*/
public void deselect (TreeItem item) {
if (item == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
if (item.isDisposed ()) SWT.error (SWT.ERROR_INVALID_ARGUMENT);
if ((style & SWT.SINGLE) != 0) {
ignoreSelection = true;
OS.TreeViewItem_IsSelected (item.handle, false);
ignoreSelection = false;
return;
}
ignoreSelection = true;
setIsSelectionActiveProperty(true);
OS.TreeViewItem_IsSelected (item.handle, false);
setIsSelectionActiveProperty(false);
ignoreSelection = false;
}
/**
* Deselects all selected items in the receiver.
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*/
public void deselectAll () {
checkWidget ();
if ((style & SWT.SINGLE) != 0) {
int tvItem = OS.TreeView_SelectedItem (handle);
if (tvItem != 0) {
ignoreSelection = true;
OS.TreeViewItem_IsSelected (tvItem, false);
ignoreSelection = false;
OS.GCHandle_Free (tvItem);
}
} else {
int items = OS.ItemsControl_Items (handle);
int itemCount = OS.ItemCollection_Count (items);
boolean[] selecting = new boolean[] {false};
for (int i = 0; i < itemCount; i++) {
int item = OS.ItemCollection_GetItemAt (items, i);
fixSelection (item, null, null, selecting);
OS.GCHandle_Free (item);
}
OS.GCHandle_Free (items);
}
}
void destroyItem (TreeColumn column) {
int index = OS.GridViewColumnCollection_IndexOf (gvColumns, column.handle);
boolean removed = OS.GridViewColumnCollection_Remove (gvColumns, column.handle);
if (!removed) error (SWT.ERROR_ITEM_NOT_REMOVED);
int arrayIndex = -1;
for (int i = 0; i < columnCount; i++) {
TreeColumn tc = columns [i];
if (tc.equals(column)) {
arrayIndex = i;
break;
}
}
columnCount--;
columns [arrayIndex] = null;
if (arrayIndex < columnCount) System.arraycopy (columns, arrayIndex+1, columns, arrayIndex, columnCount - arrayIndex);
if (columnCount == 0) {
OS.GCHandle_Free (gvColumns);
gvColumns = 0;
int templateProperty = OS.Control_TemplateProperty ();
OS.DependencyObject_ClearValue(handle, templateProperty);
OS.GCHandle_Free(templateProperty);
}
int items = OS.ItemsControl_Items (handle);
for (int i=0; i
* ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.1
*/
public int getGridLineWidth () {
checkWidget ();
//TODO
return 0;
}
/**
* Returns the height of the receiver's header
*
* @return the height of the header or zero if the header is not visible
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.1
*/
public int getHeaderHeight () {
checkWidget ();
if (gvColumns == 0) return 0;
int column = OS.GridViewColumnCollection_default (gvColumns, 0);
int height = 0;
int header = OS.GridViewColumn_Header (column);
if (header != 0) {
height = (int) OS.FrameworkElement_ActualHeight (header);
if (height == 0) {
updateLayout (header);
height = (int) OS.FrameworkElement_ActualHeight (header);
}
OS.GCHandle_Free (header);
}
OS.GCHandle_Free (column);
OS.GCHandle_Free (gvColumns);
return height;
}
/**
* Returns true
if the receiver's header is visible,
* and false
otherwise.
*
* 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.
*
*
* @return the receiver's header's visibility state
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.1
*/
public boolean getHeaderVisible () {
checkWidget ();
if (gvColumns == 0) return false;
int column = OS.GridViewColumnCollection_default (gvColumns, 0);
int header = OS.GridViewColumn_Header (column);
boolean visible = OS.UIElement_Visibility (header) == OS.Visibility_Visible;
OS.GCHandle_Free (header);
OS.GCHandle_Free (column);
return visible;
}
/**
* 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 TreeColumn
s were created by the programmer,
* this method will throw ERROR_INVALID_RANGE
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
* - ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list minus 1 (inclusive)
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @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 < columnCount)) error (SWT.ERROR_INVALID_RANGE);
return columns [index];
}
//TreeColumn _getColumn (int index) {
// if (columnCount == 0) return null;
// int gridColumn = OS.GridViewColumnCollection_default (gvColumns, index);
// int header = OS.GridViewColumn_Header (gridColumn);
// TreeColumn column = (TreeColumn) display.getWidget (header);
// OS.GCHandle_Free (gridColumn);
// OS.GCHandle_Free (header);
// return column;
//}
/**
* Returns the number of columns contained in the receiver.
* If no TreeColumn
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
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.1
*/
public int getColumnCount () {
checkWidget ();
return columnCount;
}
/**
* 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.
*
* 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.
*
* 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.
*
*
* @return the current visual order of the receiver's items
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @see Tree#setColumnOrder(int[])
* @see TreeColumn#getMoveable()
* @see TreeColumn#setMoveable(boolean)
* @see SWT#Move
*
* @since 3.2
*/
public int[] getColumnOrder () {
checkWidget ();
int [] order = new int [columnCount];
for (int i=0; iTreeColumns which are the
* columns in the receiver. Columns are returned in the order
* that they were created. If no TreeColumn
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.
*
* 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.
*
*
* @return the items in the receiver
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @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 [columnCount];
for (int i = 0; i < result.length; i++) {
result [i] = columns [i];
}
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
* - ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list minus 1 (inclusive)
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.1
*/
public TreeItem getItem (int index) {
checkWidget ();
if (index < 0 || index >= itemCount) error (SWT.ERROR_INVALID_RANGE);
int items = OS.ItemsControl_Items (handle);
TreeItem treeItem = getItem (items, index, true);
OS.GCHandle_Free (items);
return treeItem;
}
TreeItem getItem (int items, int index, boolean create) {
int item = OS.ItemCollection_GetItemAt (items, index);
TreeItem result = getItem (item, create);
OS.GCHandle_Free (item);
return result;
}
TreeItem getItem (int item, boolean create) {
int tag = OS.FrameworkElement_Tag (item);
if (tag != 0) {
int contentValue = OS.IntPtr_ToInt32 (tag);
OS.GCHandle_Free (tag);
return (TreeItem) OS.JNIGetObject (contentValue);
}
if (create) {
int itemHandle = OS.GCHandle_Alloc (item);
int parentHandle = OS.FrameworkElement_Parent (item);
TreeItem parentItem = null;
if (!OS.Object_Equals (parentHandle, handle)) parentItem = (TreeItem) display.getWidget (parentHandle);
OS.GCHandle_Free (parentHandle);
return new TreeItem (this, parentItem, SWT.NONE, 0, itemHandle);
}
return null;
}
/**
* 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.
*
* 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.
*
*
* @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
* - ERROR_NULL_ARGUMENT - if the point is null
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*/
public TreeItem getItem (Point point) {
checkWidget ();
if (point == null) error (SWT.ERROR_NULL_ARGUMENT);
int pt = OS.gcnew_Point (point.x, point.y);
int input = OS.UIElement_InputHitTest (handle, pt);
OS.GCHandle_Free (pt);
if (input == 0) return null;
Widget widget = display.getWidget (input);
OS.GCHandle_Free (input);
if (widget instanceof TreeItem) {
return (TreeItem) widget;
}
return null;
}
/**
* 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
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*/
public int getItemCount () {
checkWidget ();
return itemCount;
}
/**
* Returns the height of the area which would be used to
* display one of the items in the tree.
*
* @return the height of one item
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*/
public int getItemHeight () {
checkWidget ();
//FIXME
if (itemCount == 0) return 16;
int items = OS.ItemsControl_Items (handle);
int item = OS.ItemCollection_GetItemAt (items, 0);
double height = OS.FrameworkElement_ActualHeight (item);
OS.GCHandle_Free (item);
OS.GCHandle_Free (items);
return height != 0 ? (int) height : 16;
}
/**
* 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.
*
* 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.
*
*
* @return the items
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*/
public TreeItem [] getItems () {
checkWidget ();
TreeItem [] result = new TreeItem [itemCount];
int items = OS.ItemsControl_Items (handle);
for (int i = 0; i < itemCount; i++) {
result [i] = getItem (items, i, true);
}
OS.GCHandle_Free (items);
return result;
}
/**
* Returns true
if the receiver's lines are visible,
* and false
otherwise. Note that some platforms draw
* grid lines while others may draw alternating row colors.
*
* 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.
*
*
* @return the visibility state of the lines
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.1
*/
public boolean getLinesVisible () {
checkWidget ();
//TODO
return false;
}
/**
* Returns the receiver's parent item, which must be a
* TreeItem
or null when the receiver is a
* root.
*
* @return the receiver's parent item
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*/
public TreeItem getParentItem () {
checkWidget ();
return null;
}
/**
* Returns an array of TreeItem
s that are currently
* selected in the receiver. The order of the items is unspecified.
* An empty array indicates that no items are selected.
*
* Note: This is not the actual structure used by the receiver
* to maintain its selection, so modifying the array will
* not affect the receiver.
*
* @return an array representing the selection
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*/
public TreeItem [] getSelection () {
checkWidget ();
TreeItem [] result;
if ((style & SWT.SINGLE) != 0) {
int item = OS.TreeView_SelectedItem (handle);
if (item == 0) return new TreeItem [0];
result = new TreeItem [] { (TreeItem) display.getWidget (item) };
OS.GCHandle_Free (item);
} else {
result = getSelectedItems (handle, new TreeItem [4], new int [1]);
}
return result;
}
TreeItem[] getSelectedItems(int itemsControl, TreeItem [] selectedItems, int [] nextIndex) {
int items = OS.ItemsControl_Items (itemsControl);
int count = OS.ItemCollection_Count (items);
for (int i = 0; i < count; i++) {
int item = OS.ItemCollection_GetItemAt (items, i);
boolean selected = OS.TreeViewItem_IsSelected (item);
if (selected) {
if (nextIndex [0] == selectedItems.length) {
TreeItem [] newArray = new TreeItem [selectedItems.length + 4];
System.arraycopy (selectedItems, 0, newArray, 0, selectedItems.length);
selectedItems = newArray;
}
selectedItems [nextIndex[0]++] = getItem (item, true);
}
if (OS.TreeViewItem_IsExpanded (item)) {
selectedItems = getSelectedItems (item, selectedItems, nextIndex);
}
OS.GCHandle_Free (item);
}
OS.GCHandle_Free (items);
if (selectedItems.length != nextIndex [0]) {
TreeItem[] newArray = new TreeItem [nextIndex[0]];
System.arraycopy (selectedItems, 0, newArray, 0, nextIndex [0]);
selectedItems = newArray;
}
return selectedItems;
}
/**
* Returns the number of selected items contained in the receiver.
*
* @return the number of selected items
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*/
public int getSelectionCount () {
checkWidget ();
int result;
if ((style & SWT.SINGLE) != 0) {
int item = OS.TreeView_SelectedItem (handle);
result = item == 0 ? 0 : 1;
OS.GCHandle_Free (item);
} else {
TreeItem[] selectedItems = getSelectedItems(handle, new TreeItem[4], new int[] {0});
result = selectedItems.length;
}
return result;
}
/**
* 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
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @see #setSortColumn(TreeColumn)
*
* @since 3.2
*/
public TreeColumn getSortColumn () {
checkWidget ();
//TODO
return null;
}
/**
* Returns the direction of the sort indicator for the receiver.
* The value will be one of UP
, DOWN
* or NONE
.
*
* @return the sort direction
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @see #setSortDirection(int)
*
* @since 3.2
*/
public int getSortDirection () {
checkWidget ();
//TODO
return SWT.NONE;
}
/**
* 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
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 2.1
*/
public TreeItem getTopItem () {
checkWidget ();
//TODO
return null;
}
boolean hasItems () {
return true;
}
void HandleChecked (int sender, int e) {
if (!checkEvent (e)) return;
if (ignoreSelection) return;
int origsource = OS.RoutedEventArgs_OriginalSource (e);
int typeid = OS.CheckBox_typeid ();
boolean isCheckBox = OS.Type_IsInstanceOfType (typeid, origsource);
OS.GCHandle_Free (typeid);
OS.GCHandle_Free (origsource);
if (!isCheckBox) return;
int source = OS.RoutedEventArgs_Source (e);
TreeItem item = (TreeItem) display.getWidget (source);
OS.GCHandle_Free (source);
if (item.grayed) {
int checkbox = item.findPart (0, CHECKBOX_PART_NAME);
if (checkbox != 0) {
OS.ToggleButton_IsCheckedNullSetter (checkbox);
OS.GCHandle_Free (checkbox);
}
}
item.checked = true;
item.updateCheck ();
Event event = new Event ();
event.item = item;
event.detail = SWT.CHECK;
sendEvent (SWT.Selection, event);
}
void HandleCollapsed (int sender, int e) {
if (!checkEvent (e)) return;
int source = OS.RoutedEventArgs_Source (e);
if (OS.ItemsControl_HasItems (source)) {
TreeItem item = (TreeItem) display.getWidget (source);
int items = OS.ItemsControl_Items (item.handle);
int count = OS.ItemCollection_Count (items);
boolean[] selecting = new boolean [] {false};
for (int i = 0; i < count; i++) {
int child = OS.ItemCollection_GetItemAt (items, i);
fixSelection (child, null, null, selecting);
OS.GCHandle_Free (child);
}
OS.GCHandle_Free (items);
Event event = new Event ();
event.item = item;
sendEvent (SWT.Collapse, event);
}
OS.GCHandle_Free (source);
}
void HandleExpanded (int sender, int e) {
if (!checkEvent (e)) return;
int source = OS.RoutedEventArgs_Source (e);
if (OS.ItemsControl_HasItems (source)) {
Event event = new Event ();
event.item = (TreeItem) display.getWidget (source);
sendEvent (SWT.Expand, event);
}
OS.GCHandle_Free (source);
}
void HandlePreviewKeyDown (int sender, int e) {
super.HandlePreviewKeyDown (sender, e);
if (!checkEvent (e)) return;
int key = OS.KeyEventArgs_Key (e);
if (key == OS.Key_Return) {
int source = OS.RoutedEventArgs_OriginalSource (e);
Widget widget = display.getWidget (source);
OS.GCHandle_Free (source);
if (widget instanceof TreeItem) {
Event event = new Event ();
event.item = (TreeItem) widget;
postEvent (SWT.DefaultSelection, event);
}
}
if (key == OS.Key_RightShift || key == OS.Key_LeftShift) shiftDown = true;
if (key == OS.Key_RightCtrl || key == OS.Key_LeftCtrl) ctrlDown = true;
}
void HandlePreviewKeyUp (int sender, int e) {
super.HandlePreviewKeyUp (sender, e);
if (!checkEvent (e)) return;
int key = OS.KeyEventArgs_Key (e);
if (key == OS.Key_RightShift || key == OS.Key_LeftShift) shiftDown = false;
if (key == OS.Key_RightCtrl || key == OS.Key_LeftCtrl) ctrlDown = false;
}
void HandleLoaded (int sender, int e) {
if (!checkEvent (e)) return;
updateHeaderVisibility();
}
void HandlePreviewMouseDoubleClick (int sender, int e) {
if (!checkEvent (e)) return;
int source = OS.RoutedEventArgs_OriginalSource (e);
Widget widget = display.getWidget (source);
OS.GCHandle_Free (source);
if (widget instanceof TreeItem) {
Event event = new Event ();
event.item = (TreeItem) widget;
postEvent (SWT.DefaultSelection, event);
}
if (hooks (SWT.DefaultSelection)) OS.RoutedEventArgs_Handled(e, true);
}
void HandlePreviewMouseDown (int sender, int e) {
super.HandlePreviewMouseDown (sender, e);
if (!checkEvent (e)) return;
if ((style & SWT.SINGLE) != 0) return;
int source = OS.RoutedEventArgs_Source (e);
Widget widget = display.getWidget (source);
OS.GCHandle_Free (source);
if (widget instanceof TreeItem) {
TreeItem item = (TreeItem) widget;
/* Check that content of item was clicked, not the expander */
int point = OS.MouseEventArgs_GetPosition (e, item.contentHandle);
int input = OS.UIElement_InputHitTest (item.contentHandle, point);
OS.GCHandle_Free (point);
if (input != 0) {
OS.GCHandle_Free (input);
boolean rightClick = OS.MouseEventArgs_RightButton (e) == OS.MouseButtonState_Pressed;
if (rightClick && (ctrlDown || shiftDown)) return;
if (ctrlDown) {
boolean selected = OS.TreeViewItem_IsSelected (item.handle);
if (widget.equals (lastSelection)) {
OS.TreeViewItem_IsSelected (item.handle, !selected);
} else {
if (selected) unselect = item;
if (lastSelection != null && OS.TreeViewItem_IsSelected (lastSelection.handle)) reselect = lastSelection;
}
}
if (!shiftDown && !ctrlDown) {
boolean selected = OS.TreeViewItem_IsSelected (item.handle);
if (selected && rightClick) return;
deselectAll ();
OS.TreeViewItem_IsSelected (item.handle, true);
}
}
lastSelection = item;
}
}
void HandleSelectedItemChanged (int sender, int e) {
if (!checkEvent (e)) return;
if (ignoreSelection) return;
int selectedItem = OS.TreeView_SelectedItem (handle);
if (selectedItem == 0) return;
TreeItem item = (TreeItem) display.getWidget (selectedItem);
OS.GCHandle_Free (selectedItem);
Event event = new Event ();
event.item = item;
postEvent (SWT.Selection, event);
}
void HandleUnchecked (int sender, int e) {
if (!checkEvent (e)) return;
if (ignoreSelection) return;
int origsource = OS.RoutedEventArgs_OriginalSource (e);
int typeid = OS.CheckBox_typeid ();
boolean isCheckBox = OS.Type_IsInstanceOfType (typeid, origsource);
OS.GCHandle_Free (typeid);
OS.GCHandle_Free (origsource);
if (!isCheckBox) return;
int source = OS.RoutedEventArgs_Source (e);
TreeItem item = (TreeItem) display.getWidget (source);
OS.GCHandle_Free (source);
item.checked = false;
item.updateCheck ();
Event event = new Event ();
event.item = item;
event.detail = SWT.CHECK;
sendEvent (SWT.Selection, event);
}
void hookEvents () {
super.hookEvents ();
int handler = OS.gcnew_RoutedEventHandler (jniRef, "HandleLoaded");
if (handler == 0) error (SWT.ERROR_NO_HANDLES);
OS.FrameworkElement_Loaded (handle, handler);
OS.GCHandle_Free (handler);
handler = OS.gcnew_RoutedPropertyChangedEventHandlerObject (jniRef, "HandleSelectedItemChanged");
if (handler == 0) error (SWT.ERROR_NO_HANDLES);
OS.TreeView_SelectedItemChanged (handle, handler);
OS.GCHandle_Free (handler);
handler = OS.gcnew_MouseButtonEventHandler (jniRef, "HandlePreviewMouseDoubleClick");
if (handler == 0) error (SWT.ERROR_NO_HANDLES);
OS.Control_PreviewMouseDoubleClick (handle, handler);
OS.GCHandle_Free (handler);
/* Item events */
handler = OS.gcnew_RoutedEventHandler (jniRef, "HandleExpanded");
if (handler == 0) error (SWT.ERROR_NO_HANDLES);
int event = OS.TreeViewItem_ExpandedEvent ();
OS.UIElement_AddHandler (handle, event, handler, false);
OS.GCHandle_Free (event);
OS.GCHandle_Free (handler);
handler = OS.gcnew_RoutedEventHandler (jniRef, "HandleCollapsed");
if (handler == 0) error (SWT.ERROR_NO_HANDLES);
event = OS.TreeViewItem_CollapsedEvent ();
OS.UIElement_AddHandler (handle, event, handler, false);
OS.GCHandle_Free (event);
OS.GCHandle_Free (handler);
if ((style & SWT.CHECK) != 0) {
handler = OS.gcnew_RoutedEventHandler (jniRef, "HandleChecked");
if (handler == 0) error (SWT.ERROR_NO_HANDLES);
event = OS.ToggleButton_CheckedEvent ();
OS.UIElement_AddHandler (handle, event, handler, false);
OS.GCHandle_Free (event);
OS.GCHandle_Free (handler);
handler = OS.gcnew_RoutedEventHandler (jniRef, "HandleUnchecked");
if (handler == 0) error (SWT.ERROR_NO_HANDLES);
event = OS.ToggleButton_UncheckedEvent ();
OS.UIElement_AddHandler (handle, event, handler, false);
OS.GCHandle_Free (event);
OS.GCHandle_Free (handler);
}
}
/**
* 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
* - ERROR_NULL_ARGUMENT - if the column is null
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.1
*/
public int indexOf (TreeColumn column) {
checkWidget ();
if (column == null) error (SWT.ERROR_NULL_ARGUMENT);
if (gvColumns == 0) return -1;
int index = OS.GridViewColumnCollection_IndexOf (gvColumns, column.handle);
return index;
}
/**
* 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
* - ERROR_NULL_ARGUMENT - if the item is null
* - ERROR_INVALID_ARGUMENT - if the item has been disposed
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @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);
int items = OS.ItemsControl_Items (handle);
int index = OS.ItemCollection_IndexOf (items, item.handle);
OS.GCHandle_Free (items);
return index;
}
void OnRender (int source, int dc) {
int type = OS.TreeViewItem_typeid ();
int itemHandle = findPartOfType (source, type);
OS.GCHandle_Free (type);
TreeItem item = getItem (itemHandle, true);
OS.GCHandle_Free (itemHandle);
if ((item.cached || (style & SWT.VIRTUAL) == 0) && item.contentHandle != 0) return;
checkData (item);
if (item.contentHandle == 0) {
item.contentHandle = item.findContentPresenter();
}
int columns = columnCount == 0 ? 1 : columnCount;
item.updateCheck ();
for (int i=0; i
* ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*/
public void removeAll () {
checkWidget ();
int items = OS.ItemsControl_Items (handle);
for (int i = 0; i < itemCount; i++) {
TreeItem item = getItem (items, i, false);
if (item != null && !item.isDisposed ()) item.release (false);
}
ignoreSelection = true;
OS.ItemCollection_Clear (items);
ignoreSelection = false;
itemCount = OS.ItemCollection_Count (items);
OS.GCHandle_Free (items);
}
/**
* 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
* - ERROR_NULL_ARGUMENT - if the listener is null
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @see SelectionListener
* @see #addSelectionListener
*/
public void removeSelectionListener (SelectionListener listener) {
checkWidget ();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
eventTable.unhook (SWT.Selection, listener);
eventTable.unhook (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
* - ERROR_NULL_ARGUMENT - if the listener is null
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @see TreeListener
* @see #addTreeListener
*/
public void removeTreeListener(TreeListener listener) {
checkWidget ();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook (SWT.Expand, listener);
eventTable.unhook (SWT.Collapse, listener);
}
int setBounds (int x, int y, int width, int height, int flags) {
int result = super.setBounds (x, y, width, height, flags);
if ((result & RESIZED) != 0) {
OS.FrameworkElement_Width (handle, width);
OS.FrameworkElement_Height (handle, height);
}
return result;
}
/**
* 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
* - ERROR_INVALID_ARGUMENT - if the item has been disposed
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*/
public void setInsertMark (TreeItem item, boolean before) {
checkWidget ();
if (item != null && item.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT);
//TODO
}
/**
* Sets the number of root-level items contained in the receiver.
*
* @param count the number of items
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.2
*/
public void setItemCount (int count) {
checkWidget ();
setItemCount (null, count);
}
void setItemCount (TreeItem parentItem, int count) {
int itemCount = parentItem != null ? parentItem.itemCount : this.itemCount;
count = Math.max (0, count);
if (count == itemCount) return;
int parentHandle = parentItem != null ? parentItem.handle : handle;
int index = itemCount - 1;
int items = OS.ItemsControl_Items (parentHandle);
while (index >= count) {
TreeItem item = getItem (items, index, false);
if (item != null) {
if (!item.isDisposed()) item.release (true);
} else {
OS.ItemCollection_RemoveAt (items, index);
}
index--;
}
if (OS.ItemCollection_Count (items) > count) error (SWT.ERROR_ITEM_NOT_REMOVED);
if ((style & SWT.VIRTUAL) != 0) {
for (int i=itemCount; ione of the items in the tree.
*
* @return the height of one item
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.2
*/
/*public*/ void setItemHeight (int itemHeight) {
checkWidget ();
if (itemHeight < -1) error (SWT.ERROR_INVALID_ARGUMENT);
//TODO
}
/**
* Marks the receiver's lines as visible if the argument is true
,
* and marks it invisible otherwise. Note that some platforms draw
* grid lines while others may draw alternating row colors.
*
* 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.
*
*
* @param show the new visibility state
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.1
*/
public void setLinesVisible (boolean show) {
checkWidget ();
//TODO
}
/**
* Selects an item in the receiver. If the item was already
* selected, it remains selected.
*
* @param item the item to be selected
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the item is null
* - ERROR_INVALID_ARGUMENT - if the item has been disposed
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.4
*/
public void select (TreeItem item) {
if (item == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
if (item.isDisposed ()) SWT.error (SWT.ERROR_INVALID_ARGUMENT);
if ((style & SWT.SINGLE) != 0) {
ignoreSelection = true;
OS.TreeViewItem_IsSelected (item.handle, true);
ignoreSelection = false;
return;
}
ignoreSelection = true;
setIsSelectionActiveProperty(true);
OS.TreeViewItem_IsSelected (item.handle, true);
setIsSelectionActiveProperty(false);
ignoreSelection = false;
}
/**
* Selects all of the items in the receiver.
*
* If the receiver is single-select, do nothing.
*
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*/
public void selectAll () {
checkWidget ();
if ((style & SWT.SINGLE) != 0) return;
int items = OS.ItemsControl_Items (handle);
int itemCount = OS.ItemCollection_Count (items);
boolean[] selecting = new boolean[] {true};
setIsSelectionActiveProperty(true);
for (int i = 0; i < itemCount; i++) {
int item = OS.ItemCollection_GetItemAt(items, i);
fixSelection(item, null, null, selecting);
OS.GCHandle_Free(item);
}
setIsSelectionActiveProperty(false);
OS.GCHandle_Free(items);
}
/**
* 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
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the item order is null
* - ERROR_INVALID_ARGUMENT - if the item order is not the same length as the number of items
*
*
* @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 (order.length != columnCount) error (SWT.ERROR_INVALID_ARGUMENT);
int [] oldOrder = getColumnOrder ();
boolean reorder = false;
boolean [] seen = new boolean [columnCount];
for (int i=0; i= columnCount) error (SWT.ERROR_INVALID_ARGUMENT);
if (seen [index]) error (SWT.ERROR_INVALID_ARGUMENT);
seen [index] = true;
if (order [i] != oldOrder [i]) reorder = true;
}
if (!reorder) return;
for (int i = 0; i < order.length; i++) {
TreeColumn column = columns [order [i]];
int index = OS.IList_IndexOf (gvColumns, column.handle);
if (index != i) OS.ObservableCollectionGridViewColumn_Move (gvColumns, index, i);
}
}
void setFont (int font, double size) {
if (font != 0) {
int fontFamily = OS.Typeface_FontFamily( font);
int style = OS.Typeface_Style (font);
int weight = OS.Typeface_Weight (font);
int stretch = OS.Typeface_Stretch (font);
OS.Control_FontFamily (handle, fontFamily);
OS.Control_FontStyle (handle, style);
OS.Control_FontWeight (handle, weight);
OS.Control_FontStretch (handle, stretch);
OS.Control_FontSize (handle, size);
OS.GCHandle_Free (fontFamily);
OS.GCHandle_Free (style);
OS.GCHandle_Free (weight);
OS.GCHandle_Free (stretch);
} else {
int property = OS.Control_FontFamilyProperty ();
OS.DependencyObject_ClearValue (handle, property);
OS.GCHandle_Free (property);
property = OS.Control_FontStyleProperty ();
OS.DependencyObject_ClearValue (handle, property);
OS.GCHandle_Free (property);
property = OS.Control_FontWeightProperty ();
OS.DependencyObject_ClearValue (handle, property);
OS.GCHandle_Free (property);
property = OS.Control_FontStretchProperty ();
OS.DependencyObject_ClearValue (handle, property);
OS.GCHandle_Free (property);
property = OS.Control_FontSizeProperty ();
OS.DependencyObject_ClearValue (handle, property);
OS.GCHandle_Free (property);
}
}
void setForegroundBrush (int brush) {
if (brush != 0) {
OS.Control_Foreground (handle, brush);
} else {
int property = OS.Control_ForegroundProperty ();
OS.DependencyObject_ClearValue (handle, property);
OS.GCHandle_Free (property);
}
}
/**
* Marks the receiver's header as visible if the argument is true
,
* and marks it invisible otherwise.
*
* 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.
*
*
* @param show the new visibility state
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.1
*/
public void setHeaderVisible (boolean show) {
checkWidget ();
headerVisibility = show ? OS.Visibility_Visible : OS.Visibility_Collapsed;
updateHeaderVisibility ();
for (int i=0; i
* If the item is not in the receiver, then it is ignored.
*
*
* @param item the item to select
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the item is null
* - ERROR_INVALID_ARGUMENT - if the item has been disposed
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.2
*/
public void setSelection (TreeItem item) {
checkWidget ();
if (item == null) error (SWT.ERROR_NULL_ARGUMENT);
setSelection (new TreeItem [] {item});
}
/**
* Sets the receiver's selection to be the given array of items.
* The current selection is cleared before the new items are selected.
*
* 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.
*
*
* @param items the array of items
*
* @exception IllegalArgumentException
* - ERROR_NULL_ARGUMENT - if the array of items is null
* - ERROR_INVALID_ARGUMENT - if one of the items has been disposed
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @see Tree#deselectAll()
*/
public void setSelection (TreeItem [] items) {
checkWidget ();
if (items == null) error (SWT.ERROR_NULL_ARGUMENT);
int length = items.length;
if (length == 0 || ((style & SWT.SINGLE) != 0 && length > 1)) {
deselectAll ();
return;
}
for (int i = 0; i < items.length; i++) {
TreeItem item = items [i];
if (item != null && item.isDisposed ()) error (SWT.ERROR_WIDGET_DISPOSED);
}
deselectAll ();
ignoreSelection = true;
if ((style & SWT.SINGLE) != 0) {
TreeItem select = items [0];
if (select != null) {
OS.TreeViewItem_IsSelected (items [0].handle, true);
}
} else {
setIsSelectionActiveProperty (true);
for (int i = 0; i < length; i++) {
TreeItem item = items [i];
if (item != null) OS.TreeViewItem_IsSelected (item.handle, true);
}
setIsSelectionActiveProperty (false);
}
ignoreSelection = false;
}
/**
* 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 null
*
* @exception IllegalArgumentException
* - ERROR_INVALID_ARGUMENT - if the column is disposed
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.2
*/
public void setSortColumn (TreeColumn column) {
checkWidget ();
//TODO
}
/**
* Sets the direction of the sort indicator for the receiver. The value
* can be one of UP
, DOWN
or NONE
.
*
* @param direction the direction of the sort indicator
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @since 3.2
*/
public void setSortDirection (int direction) {
checkWidget ();
//TODO
}
/**
* 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
* - ERROR_NULL_ARGUMENT - if the item is null
* - ERROR_INVALID_ARGUMENT - if the item has been disposed
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @see Tree#getTopItem()
*
* @since 2.1
*/
public void setTopItem (TreeItem item) {
checkWidget ();
if (item == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
if (item.isDisposed ()) SWT.error (SWT.ERROR_INVALID_ARGUMENT);
//TODO
}
/**
* 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
* - ERROR_NULL_ARGUMENT - if the item is null
* - ERROR_INVALID_ARGUMENT - if the item has been disposed
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @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 index = indexOf (column);
if (index == -1) return;
//TODO
}
/**
* 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
* - ERROR_NULL_ARGUMENT - if the item is null
* - ERROR_INVALID_ARGUMENT - if the item has been disposed
*
* @exception SWTException
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @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;
int parent = OS.FrameworkElement_Parent (item.handle);
while (!OS.Object_Equals (parent, handle)) {
OS.TreeViewItem_IsExpanded (parent, true);
int newParent = OS.FrameworkElement_Parent (parent);
OS.GCHandle_Free (parent);
parent = newParent;
}
OS.GCHandle_Free (parent);
OS.FrameworkElement_BringIntoView (item.handle);
}
/**
* 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
* - ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* - ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
*
*
* @see Tree#showItem(TreeItem)
*/
public void showSelection () {
checkWidget ();
int item = OS.TreeView_SelectedItem (handle);
if (item != 0) {
OS.FrameworkElement_BringIntoView (item);
OS.GCHandle_Free (item);
}
}
int topHandle () {
return parentingHandle;
}
void updateHeaderVisibility() {
int template = OS.Control_Template (handle);
int scrollViewerName = createDotNetString (SCROLLVIEWER_PART_NAME, false);
int scrollViewer = OS.FrameworkTemplate_FindName (template, scrollViewerName, handle);
if (scrollViewer != 0) {
int scrollViewerTemplate = OS.Control_Template(scrollViewer);
int headerName = createDotNetString(HEADER_PART_NAME, false);
int header = OS.FrameworkTemplate_FindName (scrollViewerTemplate, headerName, scrollViewer);
if (header != 0) {
OS.UIElement_Visibility (header, headerVisibility);
OS.GCHandle_Free (header);
}
OS.GCHandle_Free (scrollViewerTemplate);
OS.GCHandle_Free (headerName);
OS.GCHandle_Free (scrollViewer);
}
OS.GCHandle_Free (scrollViewerName);
OS.GCHandle_Free (template);
}
}