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authorSilenio Quarti <silenio>2009-07-01 14:50:54 +0000
committerSilenio Quarti <silenio>2009-07-01 14:50:54 +0000
commit093c579a4ffd9551acb901bba9617e7aa776989d (patch)
tree71cf23798b651ef92f188390841a8d130908fb11 /bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/widgets/Combo.java
parentf664d297f7bb009784868bf3fcf0b3e3bb9a646b (diff)
downloadeclipse.platform.swt-093c579a4ffd9551acb901bba9617e7aa776989d.tar.gz
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+/*******************************************************************************
+ * 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.internal.*;
+import org.eclipse.swt.internal.gtk.*;
+import org.eclipse.swt.graphics.*;
+import org.eclipse.swt.events.*;
+
+/**
+ * Instances of this class are controls that allow the user
+ * to choose an item from a list of items, or optionally
+ * enter a new value by typing it into an editable text
+ * field. Often, <code>Combo</code>s are used in the same place
+ * where a single selection <code>List</code> widget could
+ * be used but space is limited. A <code>Combo</code> takes
+ * less space than a <code>List</code> widget and shows
+ * similar information.
+ * <p>
+ * Note: Since <code>Combo</code>s can contain both a list
+ * and an editable text field, it is possible to confuse methods
+ * which access one versus the other (compare for example,
+ * <code>clearSelection()</code> and <code>deselectAll()</code>).
+ * The API documentation is careful to indicate either "the
+ * receiver's list" or the "the receiver's text field" to
+ * distinguish between the two cases.
+ * </p><p>
+ * Note that although this class is a subclass of <code>Composite</code>,
+ * it does not make sense to add children to it, or set a layout on it.
+ * </p>
+ * <dl>
+ * <dt><b>Styles:</b></dt>
+ * <dd>DROP_DOWN, READ_ONLY, SIMPLE</dd>
+ * <dt><b>Events:</b></dt>
+ * <dd>DefaultSelection, Modify, Selection, Verify</dd>
+ * </dl>
+ * <p>
+ * Note: Only one of the styles DROP_DOWN and SIMPLE may be specified.
+ * </p><p>
+ * IMPORTANT: This class is <em>not</em> intended to be subclassed.
+ * </p>
+ *
+ * @see List
+ * @see <a href="http://www.eclipse.org/swt/snippets/#combo">Combo 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 Combo extends Composite {
+ int /*long*/ buttonHandle, entryHandle, listHandle, textRenderer, cellHandle, popupHandle;
+ int lastEventTime, visibleCount = 5;
+ int /*long*/ gdkEventKey = 0;
+ int fixStart = -1, fixEnd = -1;
+ String [] items = new String [0];
+ boolean ignoreSelect, lockText;
+
+ /**
+ * the operating system limit for the number of characters
+ * that the text field in an instance of this class can hold
+ */
+ public final static int LIMIT;
+
+ /*
+ * These values can be different on different platforms.
+ * Therefore they are not initialized in the declaration
+ * to stop the compiler from inlining.
+ */
+ static {
+ LIMIT = 0xFFFF;
+ }
+
+/**
+ * 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#DROP_DOWN
+ * @see SWT#READ_ONLY
+ * @see SWT#SIMPLE
+ * @see Widget#checkSubclass
+ * @see Widget#getStyle
+ */
+public Combo (Composite parent, int style) {
+ super (parent, checkStyle (style));
+}
+
+/**
+ * Adds the argument to the end of the receiver's list.
+ *
+ * @param string the new item
+ *
+ * @exception IllegalArgumentException <ul>
+ * <li>ERROR_NULL_ARGUMENT - if the string 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 #add(String,int)
+ */
+public void add (String string) {
+ checkWidget();
+ if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
+ add (string, items.length);
+}
+
+/**
+ * Adds the argument to the receiver's list at the given
+ * zero-relative index.
+ * <p>
+ * Note: To add an item at the end of the list, use the
+ * result of calling <code>getItemCount()</code> as the
+ * index or use <code>add(String)</code>.
+ * </p>
+ *
+ * @param string the new item
+ * @param index the index for the item
+ *
+ * @exception IllegalArgumentException <ul>
+ * <li>ERROR_NULL_ARGUMENT - if the string is null</li>
+ * <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list (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 #add(String)
+ */
+public void add (String string, int index) {
+ checkWidget();
+ if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
+ if (!(0 <= index && index <= items.length)) {
+ error (SWT.ERROR_INVALID_RANGE);
+ }
+ String [] newItems = new String [items.length + 1];
+ System.arraycopy (items, 0, newItems, 0, index);
+ newItems [index] = string;
+ System.arraycopy (items, index, newItems, index + 1, items.length - index);
+ items = newItems;
+ byte [] buffer = Converter.wcsToMbcs (null, string, true);
+ if (OS.GTK_VERSION >= OS.VERSION (2, 4, 0)) {
+ OS.gtk_combo_box_insert_text (handle, index, buffer);
+ if ((style & SWT.RIGHT_TO_LEFT) != 0 && popupHandle != 0) {
+ OS.gtk_container_forall (popupHandle, display.setDirectionProc, OS.GTK_TEXT_DIR_RTL);
+ }
+ } else {
+ /*
+ * Feature in GTK. When the list is empty and the first item
+ * is added, the combo box selects that item replacing the
+ * text in the entry field. The fix is to avoid this by
+ * stopping the "delete" and "insert_text" signal emission.
+ */
+ ignoreSelect = lockText = true;
+ int /*long*/ item = OS.gtk_list_item_new_with_label (buffer);
+ int /*long*/ label = OS.gtk_bin_get_child (item);
+ setForegroundColor (label, getForegroundColor ());
+ OS.gtk_widget_modify_font (label, getFontDescription ());
+ OS.gtk_widget_set_direction (label, OS.gtk_widget_get_direction (handle));
+ OS.gtk_widget_show (item);
+ int /*long*/ items = OS.g_list_append (0, item);
+ OS.gtk_list_insert_items (listHandle, items, index);
+ ignoreSelect = lockText = false;
+ }
+}
+
+/**
+ * Adds the listener to the collection of listeners who will
+ * be notified when the receiver's text is modified, by sending
+ * it one of the messages defined in the <code>ModifyListener</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 ModifyListener
+ * @see #removeModifyListener
+ */
+public void addModifyListener (ModifyListener listener) {
+ checkWidget();
+ if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
+ TypedListener typedListener = new TypedListener (listener);
+ addListener (SWT.Modify, typedListener);
+}
+
+/**
+ * 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>
+ * <code>widgetSelected</code> is called when the user changes the combo's list selection.
+ * <code>widgetDefaultSelected</code> is typically called when ENTER is pressed the combo's text area.
+ * </p>
+ *
+ * @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 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 the receiver's text is verified, by sending
+ * it one of the messages defined in the <code>VerifyListener</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 VerifyListener
+ * @see #removeVerifyListener
+ *
+ * @since 3.1
+ */
+public void addVerifyListener (VerifyListener listener) {
+ checkWidget ();
+ if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
+ TypedListener typedListener = new TypedListener (listener);
+ addListener (SWT.Verify, typedListener);
+}
+
+static int checkStyle (int style) {
+ /*
+ * Feature in Windows. It is not possible to create
+ * a combo box that has a border using Windows style
+ * bits. All combo boxes draw their own border and
+ * do not use the standard Windows border styles.
+ * Therefore, no matter what style bits are specified,
+ * clear the BORDER bits so that the SWT style will
+ * match the Windows widget.
+ *
+ * The Windows behavior is currently implemented on
+ * all platforms.
+ */
+ style &= ~SWT.BORDER;
+
+ /*
+ * Even though it is legal to create this widget
+ * with scroll bars, they serve no useful purpose
+ * because they do not automatically scroll the
+ * widget's client area. The fix is to clear
+ * the SWT style.
+ */
+ style &= ~(SWT.H_SCROLL | SWT.V_SCROLL);
+ style = checkBits (style, SWT.DROP_DOWN, SWT.SIMPLE, 0, 0, 0, 0);
+ if ((style & SWT.SIMPLE) != 0) return style & ~SWT.READ_ONLY;
+ return style;
+}
+
+protected void checkSubclass () {
+ if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS);
+}
+
+/**
+ * Sets the selection in the receiver's text field to an empty
+ * selection starting just before the first character. If the
+ * text field is editable, this has the effect of placing the
+ * i-beam at the start of the text.
+ * <p>
+ * Note: To clear the selected items in the receiver's list,
+ * use <code>deselectAll()</code>.
+ * </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>
+ *
+ * @see #deselectAll
+ */
+public void clearSelection () {
+ checkWidget();
+ if (entryHandle != 0) {
+ int position = OS.gtk_editable_get_position (entryHandle);
+ OS.gtk_editable_select_region (entryHandle, position, position);
+ }
+}
+
+void clearText () {
+ if (OS.GTK_VERSION >= OS.VERSION (2, 4, 0)) {
+ OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
+ if ((style & SWT.READ_ONLY) != 0) {
+ int index = OS.gtk_combo_box_get_active (handle);
+ if (index != -1) {
+ int /*long*/ modelHandle = OS.gtk_combo_box_get_model (handle);
+ int /*long*/ [] ptr = new int /*long*/ [1];
+ int /*long*/ iter = OS.g_malloc (OS.GtkTreeIter_sizeof ());
+ OS.gtk_tree_model_iter_nth_child (modelHandle, iter, 0, index);
+ OS.gtk_tree_model_get (modelHandle, iter, 0, ptr, -1);
+ OS.g_free (iter);
+ if (ptr [0] != 0 && OS.strlen (ptr [0]) > 0) postEvent (SWT.Modify);
+ OS.g_free (ptr [0]);
+ }
+ } else {
+ OS.gtk_entry_set_text (entryHandle, new byte[1]);
+ }
+ OS.gtk_combo_box_set_active (handle, -1);
+ OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
+ }
+}
+
+public Point computeSize (int wHint, int hHint, boolean changed) {
+ checkWidget ();
+ if (OS.GTK_VERSION >= OS.VERSION (2, 4, 0)) {
+ return computeNativeSize (handle, wHint, hHint, changed);
+ }
+ if (wHint != SWT.DEFAULT && wHint < 0) wHint = 0;
+ if (hHint != SWT.DEFAULT && hHint < 0) hHint = 0;
+ int[] w = new int [1], h = new int [1];
+ OS.gtk_widget_realize (entryHandle);
+ int /*long*/ layout = OS.gtk_entry_get_layout (entryHandle);
+ OS.pango_layout_get_size (layout, w, h);
+ int xborder = Display.INNER_BORDER, yborder = Display.INNER_BORDER;
+ int /*long*/ style = OS.gtk_widget_get_style (entryHandle);
+ xborder += OS.gtk_style_get_xthickness (style);
+ yborder += OS.gtk_style_get_ythickness (style);
+ int [] property = new int [1];
+ OS.gtk_widget_style_get (entryHandle, OS.interior_focus, property, 0);
+ if (property [0] == 0) {
+ OS.gtk_widget_style_get (entryHandle, OS.focus_line_width, property, 0);
+ xborder += property [0];
+ yborder += property [0];
+ }
+ int width = OS.PANGO_PIXELS (w [0]) + xborder * 2;
+ int height = OS.PANGO_PIXELS (h [0]) + yborder * 2;
+
+ GtkRequisition arrowRequesition = new GtkRequisition ();
+ OS.gtk_widget_size_request (buttonHandle, arrowRequesition);
+ GtkRequisition listRequesition = new GtkRequisition ();
+ int /*long*/ listParent = OS.gtk_widget_get_parent (listHandle);
+ OS.gtk_widget_size_request (listParent != 0 ? listParent : listHandle, listRequesition);
+
+ width = Math.max (listRequesition.width, width) + arrowRequesition.width + 4;
+ width = wHint == SWT.DEFAULT ? width : wHint;
+ height = hHint == SWT.DEFAULT ? height : hHint;
+ return new Point (width, height);
+}
+
+/**
+ * Copies the selected text.
+ * <p>
+ * The current selection is copied to the clipboard.
+ * </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>
+ *
+ * @since 2.1
+ */
+public void copy () {
+ checkWidget ();
+ if (entryHandle != 0) OS.gtk_editable_copy_clipboard (entryHandle);
+}
+
+void createHandle (int index) {
+ state |= HANDLE | MENU;
+ fixedHandle = OS.g_object_new (display.gtk_fixed_get_type (), 0);
+ if (fixedHandle == 0) error (SWT.ERROR_NO_HANDLES);
+ OS.gtk_fixed_set_has_window (fixedHandle, true);
+ if (OS.GTK_VERSION >= OS.VERSION (2, 4, 0)) {
+ int /*long*/ oldList = OS.gtk_window_list_toplevels ();
+ if ((style & SWT.READ_ONLY) != 0) {
+ handle = OS.gtk_combo_box_new_text ();
+ if (handle == 0) error (SWT.ERROR_NO_HANDLES);
+ cellHandle = OS.gtk_bin_get_child (handle);
+ if (cellHandle == 0) error (SWT.ERROR_NO_HANDLES);
+ } else {
+ handle = OS.gtk_combo_box_entry_new_text ();
+ if (handle == 0) error (SWT.ERROR_NO_HANDLES);
+ entryHandle = OS.gtk_bin_get_child (handle);
+ if (entryHandle == 0) error (SWT.ERROR_NO_HANDLES);
+ }
+ popupHandle = findPopupHandle (oldList);
+ OS.gtk_container_add (fixedHandle, handle);
+ textRenderer = OS.gtk_cell_renderer_text_new ();
+ if (textRenderer == 0) error (SWT.ERROR_NO_HANDLES);
+ /*
+ * Feature in GTK. In order to make a read only combo box the same
+ * height as an editable combo box the ypad must be set to 0. In
+ * versions 2.4.x of GTK, a pad of 0 will clip some letters. The
+ * fix is to set the pad to 1.
+ */
+ int pad = 0;
+ if (OS.GTK_VERSION < OS.VERSION(2, 6, 0)) pad = 1;
+ OS.g_object_set (textRenderer, OS.ypad, pad, 0);
+ /*
+ * Feature in GTK. In version 2.4.9 of GTK, a warning is issued
+ * when a call to gtk_cell_layout_clear() is made. The fix is to hide
+ * the warning.
+ */
+ boolean warnings = display.getWarnings ();
+ display.setWarnings (false);
+ OS.gtk_cell_layout_clear (handle);
+ display.setWarnings (warnings);
+ OS.gtk_cell_layout_pack_start (handle, textRenderer, true);
+ OS.gtk_cell_layout_set_attributes (handle, textRenderer, OS.text, 0, 0);
+
+ /*
+ * Feature in GTK. There is no API to query the button
+ * handle from a combo box although it is possible to get the
+ * text field. The button handle is needed to hook events. The
+ * fix is to walk the combo tree and find the first child that is
+ * an instance of button.
+ */
+ OS.gtk_container_forall (handle, display.allChildrenProc, 0);
+ if (display.allChildren != 0) {
+ int /*long*/ list = display.allChildren;
+ while (list != 0) {
+ int /*long*/ widget = OS.g_list_data (list);
+ if (OS.GTK_IS_BUTTON (widget)) {
+ buttonHandle = widget;
+ break;
+ }
+ list = OS.g_list_next (list);
+ }
+ OS.g_list_free (display.allChildren);
+ display.allChildren = 0;
+ }
+ /*
+ * Feature in GTK. By default, read only combo boxes
+ * process the RETURN key rather than allowing the
+ * default button to process the key. The fix is to
+ * clear the GTK_RECEIVES_DEFAULT flag.
+ */
+ if ((style & SWT.READ_ONLY) != 0 && buttonHandle != 0) {
+ OS.GTK_WIDGET_UNSET_FLAGS (buttonHandle, OS.GTK_RECEIVES_DEFAULT);
+ }
+ } else {
+ handle = OS.gtk_combo_new ();
+ if (handle == 0) error (SWT.ERROR_NO_HANDLES);
+ OS.gtk_container_add (fixedHandle, handle);
+ GtkCombo combo = new GtkCombo ();
+ OS.memmove (combo, handle);
+ entryHandle = combo.entry;
+ listHandle = combo.list;
+
+ if (OS.GTK_VERSION < OS.VERSION (2, 4, 0)) {
+ int /*long*/ parentHandle = 0;
+ int /*long*/ temp = listHandle;
+ while ((temp = OS.gtk_widget_get_parent(temp)) != 0) {
+ parentHandle = temp;
+ }
+ popupHandle = parentHandle;
+ if (popupHandle != 0) {
+ int /*long*/ modalGroup = getShell().modalGroup;
+ if (modalGroup != 0) {
+ OS.gtk_window_group_add_window (modalGroup, popupHandle);
+ }
+ }
+ }
+ /*
+ * Feature in GTK. There is no API to query the arrow
+ * handle from a combo box although it is possible to
+ * get the list and text field. The arrow handle is needed
+ * to hook events. The fix is to find the first child that is
+ * not the entry or list and assume this is the arrow handle.
+ */
+ int /*long*/ list = OS.gtk_container_get_children (handle);
+ if (list != 0) {
+ int i = 0, count = OS.g_list_length (list);
+ while (i<count) {
+ int /*long*/ childHandle = OS.g_list_nth_data (list, i);
+ if (childHandle != entryHandle && childHandle != listHandle) {
+ buttonHandle = childHandle;
+ break;
+ }
+ i++;
+ }
+ OS.g_list_free (list);
+ }
+
+ boolean editable = (style & SWT.READ_ONLY) == 0;
+ OS.gtk_editable_set_editable (entryHandle, editable);
+ OS.gtk_combo_disable_activate (handle);
+ OS.gtk_combo_set_case_sensitive (handle, true);
+ }
+}
+
+/**
+ * Cuts the selected text.
+ * <p>
+ * The current selection is first copied to the
+ * clipboard and then deleted from the widget.
+ * </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>
+ *
+ * @since 2.1
+ */
+public void cut () {
+ checkWidget ();
+ if (entryHandle != 0) OS.gtk_editable_cut_clipboard (entryHandle);
+}
+
+void deregister () {
+ super.deregister ();
+ if (buttonHandle != 0) display.removeWidget (buttonHandle);
+ if (entryHandle != 0) display.removeWidget (entryHandle);
+ if (listHandle != 0) display.removeWidget (listHandle);
+ int /*long*/ imContext = imContext ();
+ if (imContext != 0) display.removeWidget (imContext);
+}
+
+boolean filterKey (int keyval, int /*long*/ event) {
+ int time = OS.gdk_event_get_time (event);
+ if (time != lastEventTime) {
+ lastEventTime = time;
+ int /*long*/ imContext = imContext ();
+ if (imContext != 0) {
+ return OS.gtk_im_context_filter_keypress (imContext, event);
+ }
+ }
+ gdkEventKey = event;
+ return false;
+}
+
+int /*long*/ findPopupHandle (int /*long*/ oldList) {
+ int /*long*/ hdl = 0;
+ int /*long*/ currentList = OS.gtk_window_list_toplevels();
+ int /*long*/ oldFromList = oldList;
+ int /*long*/ newFromList = currentList;
+ boolean isFound;
+ while (newFromList != 0) {
+ int /*long*/ newToplevel = OS.g_list_data(newFromList);
+ isFound = false;
+ oldFromList = oldList;
+ while (oldFromList != 0) {
+ int /*long*/ oldToplevel = OS.g_list_data(oldFromList);
+ if (newToplevel == oldToplevel) {
+ isFound = true;
+ break;
+ }
+ oldFromList = OS.g_list_next(oldFromList);
+ }
+ if (!isFound) {
+ hdl = newToplevel;
+ break;
+ }
+ newFromList = OS.g_list_next(newFromList);
+ }
+ OS.g_list_free(oldList);
+ OS.g_list_free(currentList);
+ return hdl;
+}
+
+void fixModal (int /*long*/ group, int /*long*/ modalGroup) {
+ if (popupHandle != 0) {
+ if (group != 0) {
+ OS.gtk_window_group_add_window (group, popupHandle);
+ } else {
+ if (modalGroup != 0) {
+ OS.gtk_window_group_remove_window (modalGroup, popupHandle);
+ }
+ }
+ }
+}
+
+void fixIM () {
+ /*
+ * The IM filter has to be called one time for each key press event.
+ * When the IM is open the key events are duplicated. The first event
+ * is filtered by SWT and the second event is filtered by GTK. In some
+ * cases the GTK handler does not run (the widget is destroyed, the
+ * application code consumes the event, etc), for these cases the IM
+ * filter has to be called by SWT.
+ */
+ if (gdkEventKey != 0 && gdkEventKey != -1) {
+ int /*long*/ imContext = imContext ();
+ if (imContext != 0) {
+ OS.gtk_im_context_filter_keypress (imContext, gdkEventKey);
+ gdkEventKey = -1;
+ return;
+ }
+ }
+ gdkEventKey = 0;
+}
+
+int /*long*/ fontHandle () {
+ if (entryHandle != 0) return entryHandle;
+ return super.fontHandle ();
+}
+
+int /*long*/ focusHandle () {
+ if (OS.GTK_VERSION >= OS.VERSION (2, 4, 0)) {
+ if ((style & SWT.READ_ONLY) != 0 && buttonHandle != 0) return buttonHandle;
+ }
+ if (entryHandle != 0) return entryHandle;
+ return super.focusHandle ();
+}
+
+boolean hasFocus () {
+ if (super.hasFocus ()) return true;
+ if (entryHandle != 0 && OS.GTK_WIDGET_HAS_FOCUS (entryHandle)) return true;
+ if (listHandle != 0 && OS.GTK_WIDGET_HAS_FOCUS (listHandle)) return true;
+ return false;
+}
+
+void hookEvents () {
+ super.hookEvents ();
+ if (OS.GTK_VERSION >= OS.VERSION(2, 4, 0)) {
+ OS.g_signal_connect_closure (handle, OS.changed, display.closures [CHANGED], true);
+ }
+
+ if (entryHandle != 0) {
+ OS.g_signal_connect_closure (entryHandle, OS.changed, display.closures [CHANGED], true);
+ OS.g_signal_connect_closure (entryHandle, OS.insert_text, display.closures [INSERT_TEXT], false);
+ OS.g_signal_connect_closure (entryHandle, OS.delete_text, display.closures [DELETE_TEXT], false);
+ OS.g_signal_connect_closure (entryHandle, OS.activate, display.closures [ACTIVATE], false);
+ OS.g_signal_connect_closure (entryHandle, OS.populate_popup, display.closures [POPULATE_POPUP], false);
+ }
+ int eventMask = OS.GDK_POINTER_MOTION_MASK | OS.GDK_BUTTON_PRESS_MASK |
+ OS.GDK_BUTTON_RELEASE_MASK;
+ int /*long*/ [] handles = new int /*long*/ [] {buttonHandle, entryHandle, listHandle};
+ for (int i=0; i<handles.length; i++) {
+ int /*long*/ eventHandle = handles [i];
+ if (eventHandle != 0) {
+ /* Connect the mouse signals */
+ OS.gtk_widget_add_events (eventHandle, eventMask);
+ OS.g_signal_connect_closure_by_id (eventHandle, display.signalIds [BUTTON_PRESS_EVENT], 0, display.closures [BUTTON_PRESS_EVENT], false);
+ OS.g_signal_connect_closure_by_id (eventHandle, display.signalIds [BUTTON_RELEASE_EVENT], 0, display.closures [BUTTON_RELEASE_EVENT], false);
+ OS.g_signal_connect_closure_by_id (eventHandle, display.signalIds [MOTION_NOTIFY_EVENT], 0, display.closures [MOTION_NOTIFY_EVENT], false);
+ /*
+ * Feature in GTK. Events such as mouse move are propagated up
+ * the widget hierarchy and are seen by the parent. This is the
+ * correct GTK behavior but not correct for SWT. The fix is to
+ * hook a signal after and stop the propagation using a negative
+ * event number to distinguish this case.
+ */
+ OS.g_signal_connect_closure_by_id (eventHandle, display.signalIds [BUTTON_PRESS_EVENT], 0, display.closures [BUTTON_PRESS_EVENT_INVERSE], true);
+ OS.g_signal_connect_closure_by_id (eventHandle, display.signalIds [BUTTON_RELEASE_EVENT], 0, display.closures [BUTTON_RELEASE_EVENT_INVERSE], true);
+ OS.g_signal_connect_closure_by_id (eventHandle, display.signalIds [MOTION_NOTIFY_EVENT], 0, display.closures [MOTION_NOTIFY_EVENT_INVERSE], true);
+
+ /* Connect the event_after signal for both key and mouse */
+ if (eventHandle != focusHandle ()) {
+ OS.g_signal_connect_closure_by_id (eventHandle, display.signalIds [EVENT_AFTER], 0, display.closures [EVENT_AFTER], false);
+ }
+ }
+ }
+ int /*long*/ imContext = imContext ();
+ if (imContext != 0) {
+ OS.g_signal_connect_closure (imContext, OS.commit, display.closures [COMMIT], false);
+ int id = OS.g_signal_lookup (OS.commit, OS.gtk_im_context_get_type ());
+ int blockMask = OS.G_SIGNAL_MATCH_DATA | OS.G_SIGNAL_MATCH_ID;
+ OS.g_signal_handlers_block_matched (imContext, blockMask, id, 0, 0, 0, entryHandle);
+ }
+}
+
+int /*long*/ imContext () {
+ return entryHandle != 0 ? OS.GTK_ENTRY_IM_CONTEXT (entryHandle) : 0;
+}
+
+/**
+ * Deselects the item at the given zero-relative index in the receiver's
+ * list. If the item at the index was already deselected, it remains
+ * deselected. Indices that are out of range are ignored.
+ *
+ * @param index the index of the item to deselect
+ *
+ * @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 deselect (int index) {
+ checkWidget();
+ if (index < 0 || index >= items.length) return;
+ if (OS.GTK_VERSION >= OS.VERSION (2, 4, 0)) {
+ if (OS.gtk_combo_box_get_active (handle) == index) {
+ clearText ();
+ }
+ } else {
+ ignoreSelect = true;
+ int /*long*/ children = OS.gtk_container_get_children (listHandle);
+ int /*long*/ item = OS.g_list_nth_data (children, index);
+ boolean selected = OS.GTK_WIDGET_STATE (item) == OS.GTK_STATE_SELECTED;
+ if (selected) {
+ OS.gtk_list_unselect_all (listHandle);
+ OS.gtk_entry_set_text (entryHandle, new byte[1]);
+ }
+ OS.g_list_free (children);
+ ignoreSelect = false;
+ }
+}
+
+/**
+ * Deselects all selected items in the receiver's list.
+ * <p>
+ * Note: To clear the selection in the receiver's text field,
+ * use <code>clearSelection()</code>.
+ * </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>
+ *
+ * @see #clearSelection
+ */
+public void deselectAll () {
+ checkWidget();
+ if (OS.GTK_VERSION >= OS.VERSION (2, 4, 0)) {
+ clearText ();
+ } else {
+ ignoreSelect = true;
+ OS.gtk_list_unselect_all (listHandle);
+ OS.gtk_entry_set_text (entryHandle, new byte[1]);
+ ignoreSelect = false;
+ }
+}
+
+boolean dragDetect(int x, int y, boolean filter, boolean[] consume) {
+ if (filter && entryHandle != 0) {
+ int [] index = new int [1];
+ int [] trailing = new int [1];
+ int /*long*/ layout = OS.gtk_entry_get_layout (entryHandle);
+ OS.pango_layout_xy_to_index (layout, x * OS.PANGO_SCALE, y * OS.PANGO_SCALE, index, trailing);
+ int /*long*/ ptr = OS.pango_layout_get_text (layout);
+ int position = (int)/*64*/OS.g_utf8_pointer_to_offset (ptr, ptr + index[0]) + trailing[0];
+ Point selection = getSelection ();
+ if (selection.x <= position && position < selection.y) {
+ if (super.dragDetect (x, y, filter, consume)) {
+ if (consume != null) consume [0] = true;
+ return true;
+ }
+ }
+ return false;
+ }
+ return super.dragDetect (x, y, filter, consume);
+}
+
+int /*long*/ enterExitHandle () {
+ return fixedHandle;
+}
+
+int /*long*/ eventWindow () {
+ return paintWindow ();
+}
+
+GdkColor getBackgroundColor () {
+ return getBaseColor ();
+}
+
+GdkColor getForegroundColor () {
+ return getTextColor ();
+}
+
+/**
+ * Returns the item at the given, zero-relative index in the
+ * receiver's list. 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>
+ */
+public String 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's list.
+ *
+ * @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 receiver's list.
+ *
+ * @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 fontHeight (getFontDescription (), listHandle != 0 ? listHandle : handle);
+}
+
+/**
+ * Returns a (possibly empty) array of <code>String</code>s which are
+ * the items in the receiver's list.
+ * <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's list
+ *
+ * @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 String [] getItems () {
+ checkWidget();
+ String [] result = new String [items.length];
+ System.arraycopy (items, 0, result, 0, items.length);
+ return result;
+}
+
+/**
+ * Returns <code>true</code> if the receiver's list 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 list'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 3.4
+ */
+public boolean getListVisible () {
+ checkWidget ();
+ if (OS.GTK_VERSION >= OS.VERSION (2, 4, 0)) {
+ return popupHandle != 0 && OS.GTK_WIDGET_VISIBLE (popupHandle);
+ }
+ return false;
+}
+
+String getNameText () {
+ return getText ();
+}
+
+/**
+ * Returns the orientation of the receiver.
+ *
+ * @return the orientation style
+ *
+ * @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 2.1.2
+ */
+public int getOrientation () {
+ checkWidget();
+ return style & (SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT);
+}
+
+/**
+ * Returns a <code>Point</code> whose x coordinate is the
+ * character position representing the start of the selection
+ * in the receiver's text field, and whose y coordinate is the
+ * character position representing the end of the selection.
+ * An "empty" selection is indicated by the x and y coordinates
+ * having the same value.
+ * <p>
+ * Indexing is zero based. The range of a selection is from
+ * 0..N where N is the number of characters in the widget.
+ * </p>
+ *
+ * @return a point representing the selection start and end
+ *
+ * @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 Point getSelection () {
+ checkWidget ();
+ if ((style & SWT.READ_ONLY) != 0) {
+ int length = 0;
+ if (OS.GTK_VERSION >= OS.VERSION (2, 4, 0)) {
+ int index = OS.gtk_combo_box_get_active (handle);
+ if (index != -1) length = getItem (index).length ();
+ } else {
+ int /*long*/ str = OS.gtk_entry_get_text (entryHandle);
+ if (str != 0) length = (int)/*64*/OS.g_utf8_strlen (str, -1);
+ }
+ return new Point (0, length);
+ }
+ int [] start = new int [1];
+ int [] end = new int [1];
+ if (entryHandle != 0) {
+ OS.gtk_editable_get_selection_bounds (entryHandle, start, end);
+ }
+ return new Point(start [0], end [0]);
+}
+
+/**
+ * Returns the zero-relative index of the item which is currently
+ * selected in the receiver's list, or -1 if no item is selected.
+ *
+ * @return the index of the selected 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 getSelectionIndex () {
+ checkWidget();
+ if (OS.GTK_VERSION >= OS.VERSION (2, 4, 0)) {
+ return OS.gtk_combo_box_get_active (handle);
+ }
+ int index = 0, result = -1;
+ int /*long*/ children = OS.gtk_container_get_children (listHandle);
+ int /*long*/ temp = children;
+ while (temp != 0) {
+ int /*long*/ item = OS.g_list_data (temp);
+ if (OS.GTK_WIDGET_STATE (item) == OS.GTK_STATE_SELECTED) {
+ result = index;
+ break;
+ }
+ index++;
+ temp = OS.g_list_next (temp);
+ }
+ OS.g_list_free (children);
+ return result;
+}
+
+/**
+ * Returns a string containing a copy of the contents of the
+ * receiver's text field, or an empty string if there are no
+ * contents.
+ *
+ * @return the receiver's text
+ *
+ * @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 String getText () {
+ checkWidget();
+ if (entryHandle != 0) {
+ int /*long*/ str = OS.gtk_entry_get_text (entryHandle);
+ if (str == 0) return "";
+ int length = OS.strlen (str);
+ byte [] buffer = new byte [length];
+ OS.memmove (buffer, str, length);
+ return new String (Converter.mbcsToWcs (null, buffer));
+ } else {
+ int index = OS.gtk_combo_box_get_active (handle);
+ return index != -1 ? getItem (index) : "";
+ }
+}
+
+String getText (int start, int stop) {
+ /*
+ * NOTE: The current implementation uses substring ()
+ * which can reference a potentially large character
+ * array.
+ */
+ return getText ().substring (start, stop - 1);
+}
+
+/**
+ * Returns the height of the receivers's text field.
+ *
+ * @return the text height
+ *
+ * @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 getTextHeight () {
+ checkWidget();
+ GtkRequisition requisition = new GtkRequisition ();
+ gtk_widget_size_request (handle, requisition);
+ return OS.GTK_WIDGET_REQUISITION_HEIGHT (handle);
+}
+
+/**
+ * Returns the maximum number of characters that the receiver's
+ * text field is capable of holding. If this has not been changed
+ * by <code>setTextLimit()</code>, it will be the constant
+ * <code>Combo.LIMIT</code>.
+ *
+ * @return the text limit
+ *
+ * @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 #LIMIT
+ */
+public int getTextLimit () {
+ checkWidget();
+ int limit = entryHandle != 0 ? OS.gtk_entry_get_max_length (entryHandle) : 0;
+ return limit == 0 ? LIMIT : limit;
+}
+
+/**
+ * Gets the number of items that are visible in the drop
+ * down portion of the receiver's list.
+ * <p>
+ * Note: This operation is a hint and is not supported on
+ * platforms that do not have this concept.
+ * </p>
+ *
+ * @return the number of items that are 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 3.0
+ */
+public int getVisibleItemCount () {
+ checkWidget ();
+ return visibleCount;
+}
+
+int /*long*/ gtk_activate (int /*long*/ widget) {
+ postEvent (SWT.DefaultSelection);
+ return 0;
+}
+
+int /*long*/ gtk_button_press_event (int /*long*/ widget, int /*long*/ event) {
+ /*
+ * Feature in GTK. Depending on where the user clicks, GTK prevents
+ * the left mouse button event from being propagated. The fix is to
+ * send the mouse event from the event_after handler.
+ */
+ if (OS.GTK_VERSION >= OS.VERSION (2, 4, 0)) {
+ GdkEventButton gdkEvent = new GdkEventButton ();
+ OS.memmove (gdkEvent, event, GdkEventButton.sizeof);
+ if (gdkEvent.type == OS.GDK_BUTTON_PRESS && gdkEvent.button == 1 && (style & SWT.READ_ONLY) != 0) {
+ return gtk_button_press_event(widget, event, false);
+ }
+ }
+ return super.gtk_button_press_event (widget, event);
+}
+
+int /*long*/ gtk_changed (int /*long*/ widget) {
+ if (OS.GTK_VERSION >= OS.VERSION (2, 4, 0)) {
+ if (widget == handle) {
+ if (entryHandle == 0) {
+ sendEvent(SWT.Modify);
+ if (isDisposed ()) return 0;
+ }
+ /*
+ * Feature in GTK. GTK emits a changed signal whenever
+ * the contents of a combo box are altered by typing or
+ * by selecting an item in the list, but the event should
+ * only be sent when the list is selected. The fix is to
+ * only send out a selection event when there is a selected
+ * item.
+ *
+ * NOTE: This code relies on GTK clearing the selected
+ * item and not matching the item as the user types.
+ */
+ int index = OS.gtk_combo_box_get_active (handle);
+ if (index != -1) postEvent (SWT.Selection);
+ return 0;
+ }
+ } else {
+ if (!ignoreSelect) {
+ int /*long*/ ptr = OS.gtk_entry_get_text (entryHandle);
+ int length = OS.strlen (ptr);
+ byte [] buffer = new byte [length];
+ OS.memmove (buffer, ptr, length);
+ String text = new String (Converter.mbcsToWcs (null, buffer));
+ for (int i = 0; i < items.length; i++) {
+ if (items [i].equals (text)) {
+ postEvent (SWT.Selection);
+ break;
+ }
+ }
+ }
+ }
+ /*
+ * Feature in GTK. When the user types, GTK positions
+ * the caret after sending the changed signal. This
+ * means that application code that attempts to position
+ * the caret during a changed signal will fail. The fix
+ * is to post the modify event when the user is typing.
+ */
+ boolean keyPress = false;
+ int /*long*/ eventPtr = OS.gtk_get_current_event ();
+ if (eventPtr != 0) {
+ GdkEventKey gdkEvent = new GdkEventKey ();
+ OS.memmove (gdkEvent, eventPtr, GdkEventKey.sizeof);
+ switch (gdkEvent.type) {
+ case OS.GDK_KEY_PRESS:
+ keyPress = true;
+ break;
+ }
+ OS.gdk_event_free (eventPtr);
+ }
+ if (keyPress) {
+ postEvent (SWT.Modify);
+ } else {
+ sendEvent (SWT.Modify);
+ }
+ return 0;
+}
+
+int /*long*/ gtk_commit (int /*long*/ imContext, int /*long*/ text) {
+ if (text == 0) return 0;
+ if (!OS.gtk_editable_get_editable (entryHandle)) return 0;
+ int length = OS.strlen (text);
+ if (length == 0) return 0;
+ byte [] buffer = new byte [length];
+ OS.memmove (buffer, text, length);
+ char [] chars = Converter.mbcsToWcs (null, buffer);
+ char [] newChars = sendIMKeyEvent (SWT.KeyDown, null, chars);
+ if (newChars == null) return 0;
+ /*
+ * Feature in GTK. For a GtkEntry, during the insert-text signal,
+ * GTK allows the programmer to change only the caret location,
+ * not the selection. If the programmer changes the selection,
+ * the new selection is lost. The fix is to detect a selection
+ * change and set it after the insert-text signal has completed.
+ */
+ fixStart = fixEnd = -1;
+ OS.g_signal_handlers_block_matched (imContext, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, COMMIT);
+ int id = OS.g_signal_lookup (OS.commit, OS.gtk_im_context_get_type ());
+ int mask = OS.G_SIGNAL_MATCH_DATA | OS.G_SIGNAL_MATCH_ID;
+ OS.g_signal_handlers_unblock_matched (imContext, mask, id, 0, 0, 0, entryHandle);
+ if (newChars == chars) {
+ OS.g_signal_emit_by_name (imContext, OS.commit, text);
+ } else {
+ buffer = Converter.wcsToMbcs (null, newChars, true);
+ OS.g_signal_emit_by_name (imContext, OS.commit, buffer);
+ }
+ OS.g_signal_handlers_unblock_matched (imContext, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, COMMIT);
+ OS.g_signal_handlers_block_matched (imContext, mask, id, 0, 0, 0, entryHandle);
+ if (fixStart != -1 && fixEnd != -1) {
+ OS.gtk_editable_set_position (entryHandle, fixStart);
+ OS.gtk_editable_select_region (entryHandle, fixStart, fixEnd);
+ }
+ fixStart = fixEnd = -1;
+ return 0;
+}
+
+int /*long*/ gtk_delete_text (int /*long*/ widget, int /*long*/ start_pos, int /*long*/ end_pos) {
+ if (lockText) {
+ OS.gtk_list_unselect_item (listHandle, 0);
+ OS.g_signal_stop_emission_by_name (entryHandle, OS.delete_text);
+ return 0;
+ }
+ if (!hooks (SWT.Verify) && !filters (SWT.Verify)) return 0;
+ String newText = verifyText ("", (int)/*64*/start_pos, (int)/*64*/end_pos);
+ if (newText == null) {
+ OS.g_signal_stop_emission_by_name (entryHandle, OS.delete_text);
+ } else {
+ if (newText.length () > 0) {
+ int [] pos = new int [1];
+ pos [0] = (int)/*64*/end_pos;
+ byte [] buffer = Converter.wcsToMbcs (null, newText, false);
+ OS.g_signal_handlers_block_matched (entryHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
+ OS.g_signal_handlers_block_matched (entryHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT);
+ OS.gtk_editable_insert_text (entryHandle, buffer, buffer.length, pos);
+ OS.g_signal_handlers_unblock_matched (entryHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT);
+ OS.g_signal_handlers_unblock_matched (entryHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
+ OS.gtk_editable_set_position (entryHandle, pos [0]);
+ }
+ }
+ return 0;
+}
+
+int /*long*/ gtk_event_after (int /*long*/ widget, int /*long*/ gdkEvent) {
+ /*
+ * Feature in GTK. Depending on where the user clicks, GTK prevents
+ * the left mouse button event from being propagated. The fix is to
+ * send the mouse event from the event_after handler.
+ *
+ * Feature in GTK. When the user clicks anywhere in an editable
+ * combo box, a single focus event should be issued, despite the
+ * fact that focus might switch between the drop down button and
+ * the text field. The fix is to use gtk_combo_box_set_focus_on_click ()
+ * to eat all focus events while focus is in the combo box. When the
+ * user clicks on the drop down button focus is assigned to the text
+ * field.
+ */
+ if (OS.GTK_VERSION >= OS.VERSION (2, 4, 0)) {
+ GdkEvent event = new GdkEvent ();
+ OS.memmove (event, gdkEvent, GdkEvent.sizeof);
+ switch (event.type) {
+ case OS.GDK_BUTTON_PRESS: {
+ GdkEventButton gdkEventButton = new GdkEventButton ();
+ OS.memmove (gdkEventButton, gdkEvent, GdkEventButton.sizeof);
+ if (gdkEventButton.button == 1) {
+ if ((style & SWT.READ_ONLY) != 0 && !sendMouseEvent (SWT.MouseDown, gdkEventButton.button, display.clickCount, 0, false, gdkEventButton.time, gdkEventButton.x_root, gdkEventButton.y_root, false, gdkEventButton.state)) {
+ return 1;
+ }
+ if (OS.GTK_VERSION >= OS.VERSION (2, 6, 0)) {
+ if ((style & SWT.READ_ONLY) == 0 && widget == buttonHandle) {
+ OS.gtk_widget_grab_focus (entryHandle);
+ }
+ }
+ }
+ break;
+ }
+ case OS.GDK_FOCUS_CHANGE: {
+ if (OS.GTK_VERSION >= OS.VERSION (2, 6, 0)) {
+ if ((style & SWT.READ_ONLY) == 0) {
+ GdkEventFocus gdkEventFocus = new GdkEventFocus ();
+ OS.memmove (gdkEventFocus, gdkEvent, GdkEventFocus.sizeof);
+ if (gdkEventFocus.in != 0) {
+ OS.gtk_combo_box_set_focus_on_click (handle, false);
+ } else {
+ OS.gtk_combo_box_set_focus_on_click (handle, true);
+ }
+ }
+ }
+ break;
+ }
+ }
+ }
+ return super.gtk_event_after(widget, gdkEvent);
+}
+
+int /*long*/ gtk_focus_out_event (int /*long*/ widget, int /*long*/ event) {
+ fixIM ();
+ return super.gtk_focus_out_event (widget, event);
+}
+
+int /*long*/ gtk_insert_text (int /*long*/ widget, int /*long*/ new_text, int /*long*/ new_text_length, int /*long*/ position) {
+ if (lockText) {
+ OS.gtk_list_unselect_item (listHandle, 0);
+ OS.g_signal_stop_emission_by_name (entryHandle, OS.insert_text);
+ return 0;
+ }
+ if (!hooks (SWT.Verify) && !filters (SWT.Verify)) return 0;
+ if (new_text == 0 || new_text_length == 0) return 0;
+ byte [] buffer = new byte [(int)/*64*/new_text_length];
+ OS.memmove (buffer, new_text, buffer.length);
+ String oldText = new String (Converter.mbcsToWcs (null, buffer));
+ int [] pos = new int [1];
+ OS.memmove (pos, position, 4);
+ if (pos [0] == -1) {
+ int /*long*/ ptr = OS.gtk_entry_get_text (entryHandle);
+ pos [0] = (int)/*64*/OS.g_utf8_strlen (ptr, -1);
+ }
+ String newText = verifyText (oldText, pos [0], pos [0]);
+ if (newText != oldText) {
+ int [] newStart = new int [1], newEnd = new int [1];
+ OS.gtk_editable_get_selection_bounds (entryHandle, newStart, newEnd);
+ if (newText != null) {
+ if (newStart [0] != newEnd [0]) {
+ OS.g_signal_handlers_block_matched (entryHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, DELETE_TEXT);
+ OS.g_signal_handlers_block_matched (entryHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
+ OS.gtk_editable_delete_selection (entryHandle);
+ OS.g_signal_handlers_unblock_matched (entryHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, DELETE_TEXT);
+ OS.g_signal_handlers_unblock_matched (entryHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
+ }
+ byte [] buffer3 = Converter.wcsToMbcs (null, newText, false);
+ OS.g_signal_handlers_block_matched (entryHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT);
+ OS.gtk_editable_insert_text (entryHandle, buffer3, buffer3.length, pos);
+ OS.g_signal_handlers_unblock_matched (entryHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT);
+ newStart [0] = newEnd [0] = pos [0];
+ }
+ pos [0] = newEnd [0];
+ if (newStart [0] != newEnd [0]) {
+ fixStart = newStart [0];
+ fixEnd = newEnd [0];
+ }
+ OS.memmove (position, pos, 4);
+ OS.g_signal_stop_emission_by_name (entryHandle, OS.insert_text);
+ }
+ return 0;
+}
+
+int /*long*/ gtk_key_press_event (int /*long*/ widget, int /*long*/ event) {
+ int /*long*/ result = super.gtk_key_press_event (widget, event);
+ if (result != 0) fixIM ();
+ if (gdkEventKey == -1) result = 1;
+ gdkEventKey = 0;
+ if (OS.GTK_VERSION >= OS.VERSION (2, 4, 0) && (style & SWT.READ_ONLY) == 0) {
+ GdkEventKey keyEvent = new GdkEventKey ();
+ OS.memmove (keyEvent, event, GdkEventKey.sizeof);
+ int oldIndex = OS.gtk_combo_box_get_active (handle);
+ int newIndex = oldIndex;
+ int key = keyEvent.keyval;
+ switch (key) {
+ case OS.GDK_Down:
+ case OS.GDK_KP_Down:
+ if (oldIndex != (items.length - 1)) {
+ newIndex = oldIndex + 1;
+ }
+ break;
+ case OS.GDK_Up:
+ case OS.GDK_KP_Up:
+ if (oldIndex != -1 && oldIndex != 0) {
+ newIndex = oldIndex - 1;
+ }
+ break;
+ /*
+ * Feature in GTK. In gtk_combo_box, the PageUp and PageDown keys
+ * go the first and last items in the list rather than scrolling
+ * a page at a time. The fix is to emulate this behavior for
+ * gtk_combo_box_entry.
+ */
+ case OS.GDK_Page_Up:
+ case OS.GDK_KP_Page_Up:
+ newIndex = 0;
+ break;
+ case OS.GDK_Page_Down:
+ case OS.GDK_KP_Page_Down:
+ newIndex = items.length - 1;
+ break;
+ }
+ if (newIndex != oldIndex) {
+ OS.gtk_combo_box_set_active (handle, newIndex);
+ return 1;
+ }
+ }
+ return result;
+}
+
+int /*long*/ gtk_populate_popup (int /*long*/ widget, int /*long*/ menu) {
+ if ((style & SWT.RIGHT_TO_LEFT) != 0) {
+ OS.gtk_widget_set_direction (menu, OS.GTK_TEXT_DIR_RTL);
+ OS.gtk_container_forall (menu, display.setDirectionProc, OS.GTK_TEXT_DIR_RTL);
+ }
+ return 0;
+}
+
+/**
+ * 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 string the search item
+ * @return the index of the item
+ *
+ * @exception IllegalArgumentException <ul>
+ * <li>ERROR_NULL_ARGUMENT - if the string 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 int indexOf (String string) {
+ checkWidget();
+ return indexOf (string, 0);
+}
+
+/**
+ * Searches the receiver's list starting at the given,
+ * zero-relative index until an item is found that is equal
+ * to the argument, and returns the index of that item. If
+ * no item is found or the starting index is out of range,
+ * returns -1.
+ *
+ * @param string the search item
+ * @param start the zero-relative index at which to begin the search
+ * @return the index of the item
+ *
+ * @exception IllegalArgumentException <ul>
+ * <li>ERROR_NULL_ARGUMENT - if the string 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 int indexOf (String string, int start) {
+ checkWidget();
+ if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
+ if (!(0 <= start && start < items.length)) return -1;
+ for (int i=start; i<items.length; i++) {
+ if (string.equals(items [i])) return i;
+ }
+ return -1;
+}
+
+boolean isFocusHandle(int widget) {
+ if (OS.GTK_VERSION >= OS.VERSION (2, 4, 0)) {
+ if (buttonHandle != 0 && widget == buttonHandle) return true;
+ if (entryHandle != 0 && widget == entryHandle) return true;
+ }
+ return super.isFocusHandle (widget);
+}
+
+int /*long*/ paintWindow () {
+ int /*long*/ childHandle = entryHandle != 0 ? entryHandle : handle;
+ OS.gtk_widget_realize (childHandle);
+ int /*long*/ window = OS.GTK_WIDGET_WINDOW (childHandle);
+ if (OS.GTK_VERSION >= OS.VERSION (2, 4, 0)) {
+ if ((style & SWT.READ_ONLY) != 0) return window;
+ }
+ int /*long*/ children = OS.gdk_window_get_children (window);
+ if (children != 0) window = OS.g_list_data (children);
+ OS.g_list_free (children);
+ return window;
+}
+
+/**
+ * Pastes text from clipboard.
+ * <p>
+ * The selected text is deleted from the widget
+ * and new text inserted from the clipboard.
+ * </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>
+ *
+ * @since 2.1
+ */
+public void paste () {
+ checkWidget ();
+ if (entryHandle != 0) OS.gtk_editable_paste_clipboard (entryHandle);
+}
+
+int /*long*/ parentingHandle() {
+ return fixedHandle;
+}
+
+void register () {
+ super.register ();
+ if (buttonHandle != 0) display.addWidget (buttonHandle, this);
+ if (entryHandle != 0) display.addWidget (entryHandle, this);
+ if (listHandle != 0) display.addWidget (listHandle, this);
+ int /*long*/ imContext = imContext ();
+ if (imContext != 0) display.addWidget (imContext, this);
+}
+
+void releaseHandle () {
+ super.releaseHandle ();
+ buttonHandle = entryHandle = listHandle = 0;
+}
+
+void releaseWidget () {
+ super.releaseWidget ();
+ textRenderer = 0;
+ fixIM ();
+}
+
+/**
+ * Removes the item from the receiver's list at the given
+ * zero-relative index.
+ *
+ * @param index the index for the item
+ *
+ * @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>
+ */
+public void remove (int index) {
+ checkWidget();
+ if (!(0 <= index && index < items.length)) {
+ error (SWT.ERROR_INVALID_RANGE);
+ }
+ String [] oldItems = items;
+ String [] newItems = new String [oldItems.length - 1];
+ System.arraycopy (oldItems, 0, newItems, 0, index);
+ System.arraycopy (oldItems, index + 1, newItems, index, oldItems.length - index - 1);
+ items = newItems;
+ if (OS.GTK_VERSION >= OS.VERSION (2, 4, 0)) {
+ if (OS.gtk_combo_box_get_active (handle) == index) clearText ();
+ OS.gtk_combo_box_remove_text (handle, index);
+ } else {
+ ignoreSelect = true;
+ int /*long*/ children = OS.gtk_container_get_children (listHandle);
+ int /*long*/ item = OS.g_list_nth_data (children, index);
+ boolean selected = OS.GTK_WIDGET_STATE (item) == OS.GTK_STATE_SELECTED;
+ int /*long*/ items = OS.g_list_append (0, item);
+ OS.gtk_list_remove_items (listHandle, items);
+ OS.g_list_free (items);
+ OS.g_list_free (children);
+ if (selected) {
+ OS.gtk_entry_set_text (entryHandle, new byte[1]);
+ }
+ ignoreSelect = false;
+ }
+}
+
+/**
+ * Removes the items from the receiver's list which are
+ * between the given zero-relative start and end
+ * indices (inclusive).
+ *
+ * @param start the start of the range
+ * @param end the end of the range
+ *
+ * @exception IllegalArgumentException <ul>
+ * <li>ERROR_INVALID_RANGE - if either the start or end are 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>
+ */
+public void remove (int start, int end) {
+ checkWidget();
+ if (start > end) return;
+ if (!(0 <= start && start <= end && end < items.length)) {
+ error (SWT.ERROR_INVALID_RANGE);
+ }
+ String [] oldItems = items;
+ String [] newItems = new String [oldItems.length - (end - start + 1)];
+ System.arraycopy (oldItems, 0, newItems, 0, start);
+ System.arraycopy (oldItems, end + 1, newItems, start, oldItems.length - end - 1);
+ items = newItems;
+ if (OS.GTK_VERSION >= OS.VERSION (2, 4, 0)) {
+ int index = OS.gtk_combo_box_get_active (handle);
+ if (start <= index && index <= end) clearText();
+ for (int i = end; i >= start; i--) {
+ OS.gtk_combo_box_remove_text (handle, i);
+ }
+ } else {
+ boolean selected = false;
+ ignoreSelect = true;
+ int /*long*/ items = 0;
+ int /*long*/ children = OS.gtk_container_get_children (listHandle);
+ for (int i = start; i <= end; i++) {
+ int /*long*/ item = OS.g_list_nth_data (children, i);
+ selected |= OS.GTK_WIDGET_STATE (item) == OS.GTK_STATE_SELECTED;
+ items = OS.g_list_append (items, item);
+ }
+ OS.gtk_list_remove_items (listHandle, items);
+ OS.g_list_free (items);
+ OS.g_list_free (children);
+ if (selected) {
+ OS.gtk_entry_set_text (entryHandle, new byte[1]);
+ }
+ ignoreSelect = false;
+ }
+}
+
+/**
+ * Searches the receiver's list starting at the first item
+ * until an item is found that is equal to the argument,
+ * and removes that item from the list.
+ *
+ * @param string the item to remove
+ *
+ * @exception IllegalArgumentException <ul>
+ * <li>ERROR_NULL_ARGUMENT - if the string is null</li>
+ * <li>ERROR_INVALID_ARGUMENT - if the string is not found in the list</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 remove (String string) {
+ checkWidget();
+ if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
+ int index = indexOf (string, 0);
+ if (index == -1) error (SWT.ERROR_INVALID_ARGUMENT);
+ remove (index);
+}
+
+/**
+ * Removes all of the items from the receiver's list and clear the
+ * contents of receiver's text field.
+ * <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 removeAll () {
+ checkWidget();
+ int count = items.length;
+ items = new String[0];
+ if (OS.GTK_VERSION >= OS.VERSION (2, 4, 0)) {
+ clearText ();
+ for (int i = count - 1; i >= 0; i--) {
+ OS.gtk_combo_box_remove_text (handle, i);
+ }
+ } else {
+ ignoreSelect = true;
+ OS.gtk_list_clear_items (listHandle, 0, -1);
+ OS.gtk_entry_set_text (entryHandle, new byte[1]);
+ ignoreSelect = false;
+ }
+}
+
+/**
+ * Removes the listener from the collection of listeners who will
+ * be notified when the receiver's text is modified.
+ *
+ * @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 ModifyListener
+ * @see #addModifyListener
+ */
+public void removeModifyListener (ModifyListener listener) {
+ checkWidget();
+ if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
+ if (eventTable == null) return;
+ eventTable.unhook (SWT.Modify, listener);
+}
+
+/**
+ * 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);
+ if (eventTable == null) return;
+ eventTable.unhook (SWT.Selection, listener);
+ eventTable.unhook (SWT.DefaultSelection,listener);
+}
+
+/**
+ * Removes the listener from the collection of listeners who will
+ * be notified when the control is verified.
+ *
+ * @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 VerifyListener
+ * @see #addVerifyListener
+ *
+ * @since 3.1
+ */
+public void removeVerifyListener (VerifyListener listener) {
+ checkWidget ();
+ if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
+ if (eventTable == null) return;
+ eventTable.unhook (SWT.Verify, listener);
+}
+
+/**
+ * Selects the item at the given zero-relative index in the receiver's
+ * list. If the item at the index was already selected, it remains
+ * selected. Indices that are out of range are ignored.
+ *
+ * @param index the index of the item to select
+ *
+ * @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 select (int index) {
+ checkWidget();
+ if (index < 0 || index >= items.length) return;
+ if (OS.GTK_VERSION >= OS.VERSION (2, 4, 0)) {
+ OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
+ OS.gtk_combo_box_set_active (handle, index);
+ OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
+ if ((style & SWT.READ_ONLY) != 0) {
+ /*
+ * Feature in GTK. Read Only combo boxes do not get a chance to send out a
+ * Modify event in the gtk_changed callback. The fix is to send a Modify event
+ * here.
+ */
+ sendEvent (SWT.Modify);
+ }
+ } else {
+ ignoreSelect = true;
+ OS.gtk_list_select_item (listHandle, index);
+ ignoreSelect = false;
+ }
+}
+
+void setBackgroundColor (GdkColor color) {
+ super.setBackgroundColor (color);
+ if (OS.GTK_VERSION >= OS.VERSION (2, 4, 0)) {
+ if (entryHandle != 0) OS.gtk_widget_modify_base (entryHandle, 0, color);
+ OS.g_object_set (textRenderer, OS.background_gdk, color, 0);
+ } else {
+ OS.gtk_widget_modify_base (entryHandle, 0, color);
+ if (listHandle != 0) OS.gtk_widget_modify_base (listHandle, 0, color);
+ }
+}
+
+int setBounds (int x, int y, int width, int height, boolean move, boolean resize) {
+ int newHeight = height;
+ if (resize) newHeight = Math.max (getTextHeight (), height);
+ return super.setBounds (x, y, width, newHeight, move, resize);
+}
+
+void setFontDescription (int /*long*/ font) {
+ super.setFontDescription (font);
+ if (OS.GTK_VERSION >= OS.VERSION (2, 4, 0)) {
+ if (entryHandle != 0) OS.gtk_widget_modify_font (entryHandle, font);
+ OS.g_object_set (textRenderer, OS.font_desc, font, 0);
+ if ((style & SWT.READ_ONLY) != 0) {
+ /*
+ * Bug in GTK. Setting the font can leave the combo box with an
+ * invalid minimum size. The fix is to temporarily change the
+ * selected item to force the combo box to resize.
+ */
+ int index = OS.gtk_combo_box_get_active (handle);
+ OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
+ OS.gtk_combo_box_set_active (handle, -1);
+ OS.gtk_combo_box_set_active (handle, index);
+ OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
+ }
+ } else {
+ OS.gtk_widget_modify_font (entryHandle, font);
+ if (listHandle != 0) {
+ OS.gtk_widget_modify_font (listHandle, font);
+ int /*long*/ itemsList = OS.gtk_container_get_children (listHandle);
+ if (itemsList != 0) {
+ int count = OS.g_list_length (itemsList);
+ for (int i=count - 1; i>=0; i--) {
+ int /*long*/ widget = OS.gtk_bin_get_child (OS.g_list_nth_data (itemsList, i));
+ OS.gtk_widget_modify_font (widget, font);
+ }
+ OS.g_list_free (itemsList);
+ }
+ }
+ }
+}
+
+void setForegroundColor (GdkColor color) {
+ super.setForegroundColor (color);
+ if (OS.GTK_VERSION >= OS.VERSION (2, 4, 0)) {
+ if (entryHandle != 0) setForegroundColor (entryHandle, color);
+ OS.g_object_set (textRenderer, OS.foreground_gdk, color, 0);
+ } else {
+ setForegroundColor (entryHandle, color);
+ if (listHandle != 0) {
+ setForegroundColor (listHandle, color);
+ int /*long*/ itemsList = OS.gtk_container_get_children (listHandle);
+ if (itemsList != 0) {
+ int count = OS.g_list_length (itemsList);
+ for (int i=count - 1; i>=0; i--) {
+ int /*long*/ widget = OS.gtk_bin_get_child (OS.g_list_nth_data (itemsList, i));
+ setForegroundColor (widget, color);
+ }
+ OS.g_list_free (itemsList);
+ }
+ }
+ }
+}
+
+/**
+ * Sets the text of the item in the receiver's list at the given
+ * zero-relative index to the string argument.
+ *
+ * @param index the index for the item
+ * @param string the new text for the item
+ *
+ * @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>
+ * <li>ERROR_NULL_ARGUMENT - if the string 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 void setItem (int index, String string) {
+ checkWidget();
+ if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
+ if (!(0 <= index && index < items.length)) {
+ error (SWT.ERROR_INVALID_ARGUMENT);
+ }
+ items [index] = string;
+ byte [] buffer = Converter.wcsToMbcs (null, string, true);
+ if (OS.GTK_VERSION >= OS.VERSION (2, 4, 0)) {
+ OS.gtk_combo_box_remove_text (handle, index);
+ OS.gtk_combo_box_insert_text (handle, index, buffer);
+ if ((style & SWT.RIGHT_TO_LEFT) != 0 && popupHandle != 0) {
+ OS.gtk_container_forall (popupHandle, display.setDirectionProc, OS.GTK_TEXT_DIR_RTL);
+ }
+ } else {
+ ignoreSelect = true;
+ int /*long*/ children = OS.gtk_container_get_children (listHandle);
+ int /*long*/ item = OS.g_list_nth_data (children, index);
+ int /*long*/ label = OS.gtk_bin_get_child (item);
+ OS.gtk_label_set_text (label, buffer);
+ OS.g_list_free (children);
+ ignoreSelect = false;
+ }
+}
+
+/**
+ * Sets the receiver's list to be the given array of items.
+ *
+ * @param items the array of items
+ *
+ * @exception IllegalArgumentException <ul>
+ * <li>ERROR_NULL_ARGUMENT - if the items array is null</li>
+ * <li>ERROR_INVALID_ARGUMENT - if an item in the items array 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 void setItems (String [] items) {
+ checkWidget();
+ if (items == null) error (SWT.ERROR_NULL_ARGUMENT);
+ for (int i=0; i<items.length; i++) {
+ if (items [i] == null) error (SWT.ERROR_INVALID_ARGUMENT);
+ }
+ int count = this.items.length;
+ this.items = new String [items.length];
+ System.arraycopy (items, 0, this.items, 0, items.length);
+ if (OS.GTK_VERSION >= OS.VERSION (2, 4, 0)) {
+ clearText ();
+ for (int i = count - 1; i >= 0; i--) {
+ OS.gtk_combo_box_remove_text (handle, i);
+ }
+ for (int i = 0; i < items.length; i++) {
+ String string = items [i];
+ byte [] buffer = Converter.wcsToMbcs (null, string, true);
+ OS.gtk_combo_box_insert_text (handle, i, buffer);
+ if ((style & SWT.RIGHT_TO_LEFT) != 0 && popupHandle != 0) {
+ OS.gtk_container_forall (popupHandle, display.setDirectionProc, OS.GTK_TEXT_DIR_RTL);
+ }
+ }
+ } else {
+ lockText = ignoreSelect = true;
+ OS.gtk_list_clear_items (listHandle, 0, -1);
+ int /*long*/ font = getFontDescription ();
+ GdkColor color = getForegroundColor ();
+ int direction = OS.gtk_widget_get_direction (handle);
+ int i = 0;
+ while (i < items.length) {
+ String string = items [i];
+ byte [] buffer = Converter.wcsToMbcs (null, string, true);
+ int /*long*/ item = OS.gtk_list_item_new_with_label (buffer);
+ int /*long*/ label = OS.gtk_bin_get_child (item);
+ setForegroundColor (label, color);
+ OS.gtk_widget_modify_font (label, font);
+ OS.gtk_widget_set_direction (label, direction);
+ OS.gtk_container_add (listHandle, item);
+ OS.gtk_widget_show (item);
+ i++;
+ }
+ lockText = ignoreSelect = false;
+ OS.gtk_entry_set_text (entryHandle, new byte[1]);
+ }
+}
+
+/**
+ * Marks the receiver's list 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 visible 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 3.4
+ */
+public void setListVisible (boolean visible) {
+ checkWidget ();
+ if (OS.GTK_VERSION >= OS.VERSION (2, 4, 0)) {
+ if (visible) {
+ OS.gtk_combo_box_popup (handle);
+ } else {
+ OS.gtk_combo_box_popdown (handle);
+ }
+ }
+}
+
+void setOrientation() {
+ super.setOrientation();
+ if ((style & SWT.RIGHT_TO_LEFT) != 0) {
+ if (listHandle != 0) OS.gtk_widget_set_direction (listHandle, OS.GTK_TEXT_DIR_RTL);
+ if (entryHandle != 0) OS.gtk_widget_set_direction (entryHandle, OS.GTK_TEXT_DIR_RTL);
+ if (cellHandle != 0) OS.gtk_widget_set_direction (cellHandle, OS.GTK_TEXT_DIR_RTL);
+ }
+}
+
+/**
+ * Sets the orientation of the receiver, which must be one
+ * of the constants <code>SWT.LEFT_TO_RIGHT</code> or <code>SWT.RIGHT_TO_LEFT</code>.
+ * <p>
+ *
+ * @param orientation new orientation style
+ *
+ * @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 2.1.2
+ */
+public void setOrientation (int orientation) {
+ if (OS.GTK_VERSION >= OS.VERSION (2, 4, 0)) {
+ checkWidget();
+ int flags = SWT.RIGHT_TO_LEFT | SWT.LEFT_TO_RIGHT;
+ if ((orientation & flags) == 0 || (orientation & flags) == flags) return;
+ style &= ~flags;
+ style |= orientation & flags;
+ int dir = (orientation & SWT.RIGHT_TO_LEFT) != 0 ? OS.GTK_TEXT_DIR_RTL : OS.GTK_TEXT_DIR_LTR;
+ OS.gtk_widget_set_direction (fixedHandle, dir);
+ OS.gtk_widget_set_direction (handle, dir);
+ if (entryHandle != 0) OS.gtk_widget_set_direction (entryHandle, dir);
+ if (listHandle != 0) {
+ OS.gtk_widget_set_direction (listHandle, dir);
+ int /*long*/ itemsList = OS.gtk_container_get_children (listHandle);
+ if (itemsList != 0) {
+ int count = OS.g_list_length (itemsList);
+ for (int i=count - 1; i>=0; i--) {
+ int /*long*/ widget = OS.gtk_bin_get_child (OS.g_list_nth_data (itemsList, i));
+ OS.gtk_widget_set_direction (widget, dir);
+ }
+ OS.g_list_free (itemsList);
+ }
+ }
+ if (cellHandle != 0) OS.gtk_widget_set_direction (cellHandle, dir);
+ if (popupHandle != 0) OS.gtk_container_forall (popupHandle, display.setDirectionProc, dir);
+ }
+}
+
+/**
+ * Sets the selection in the receiver's text field to the
+ * range specified by the argument whose x coordinate is the
+ * start of the selection and whose y coordinate is the end
+ * of the selection.
+ *
+ * @param selection a point representing the new selection start and end
+ *
+ * @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 void setSelection (Point selection) {
+ checkWidget();
+ if (selection == null) error (SWT.ERROR_NULL_ARGUMENT);
+ if ((style & SWT.READ_ONLY) != 0) return;
+ if (entryHandle != 0) {
+ OS.gtk_editable_set_position (entryHandle, selection.x);
+ OS.gtk_editable_select_region (entryHandle, selection.x, selection.y);
+ }
+}
+
+/**
+ * Sets the contents of the receiver's text field to the
+ * given string.
+ * <p>
+ * This call is ignored when the receiver is read only and
+ * the given string is not in the receiver's list.
+ * </p>
+ * <p>
+ * Note: The text field in a <code>Combo</code> is typically
+ * only capable of displaying a single line of text. Thus,
+ * setting the text to a string containing line breaks or
+ * other special characters will probably cause it to
+ * display incorrectly.
+ * </p>
+ *
+ * @param string the new text
+ *
+ * @exception IllegalArgumentException <ul>
+ * <li>ERROR_NULL_ARGUMENT - if the string 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 void setText (String string) {
+ checkWidget();
+ if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
+ if ((style & SWT.READ_ONLY) != 0) {
+ int index = indexOf (string);
+ if (index == -1) return;
+ if (OS.GTK_VERSION >= OS.VERSION (2, 4, 0)) {
+ OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
+ OS.gtk_combo_box_set_active (handle, index);
+ OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
+ /*
+ * Feature in GTK. Read Only combo boxes do not get a chance to send out a
+ * Modify event in the gtk_changed callback. The fix is to send a Modify event
+ * here.
+ */
+ sendEvent (SWT.Modify);
+ return;
+ }
+ }
+ /*
+ * Feature in gtk. When text is set in gtk, separate events are fired for the deletion and
+ * insertion of the text. This is not wrong, but is inconsistent with other platforms. The
+ * fix is to block the firing of these events and fire them ourselves in a consistent manner.
+ */
+ if (hooks (SWT.Verify) || filters (SWT.Verify)) {
+ int /*long*/ ptr = OS.gtk_entry_get_text (entryHandle);
+ string = verifyText (string, 0, (int)/*64*/OS.g_utf8_strlen (ptr, -1));
+ if (string == null) return;
+ }
+ byte [] buffer = Converter.wcsToMbcs (null, string, true);
+ if (OS.GTK_VERSION >= OS.VERSION (2, 4, 0)) {
+ OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
+ }
+ OS.g_signal_handlers_block_matched (entryHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
+ OS.g_signal_handlers_block_matched (entryHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, DELETE_TEXT);
+ OS.g_signal_handlers_block_matched (entryHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT);
+ OS.gtk_entry_set_text (entryHandle, buffer);
+ if (OS.GTK_VERSION >= OS.VERSION (2, 4, 0)) {
+ OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
+ }
+ OS.g_signal_handlers_unblock_matched (entryHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED);
+ OS.g_signal_handlers_unblock_matched (entryHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, DELETE_TEXT);
+ OS.g_signal_handlers_unblock_matched (entryHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT);
+ sendEvent (SWT.Modify);
+}
+
+/**
+ * Sets the maximum number of characters that the receiver's
+ * text field is capable of holding to be the argument.
+ * <p>
+ * To reset this value to the default, use <code>setTextLimit(Combo.LIMIT)</code>.
+ * Specifying a limit value larger than <code>Combo.LIMIT</code> sets the
+ * receiver's limit to <code>Combo.LIMIT</code>.
+ * </p>
+ * @param limit new text limit
+ *
+ * @exception IllegalArgumentException <ul>
+ * <li>ERROR_CANNOT_BE_ZERO - if the limit is zero</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 #LIMIT
+ */
+public void setTextLimit (int limit) {
+ checkWidget();
+ if (limit == 0) error (SWT.ERROR_CANNOT_BE_ZERO);
+ if (entryHandle != 0) OS.gtk_entry_set_max_length (entryHandle, limit);
+}
+
+void setToolTipText (Shell shell, String newString) {
+ if (entryHandle != 0) shell.setToolTipText (entryHandle, newString);
+ if (buttonHandle != 0) shell.setToolTipText (buttonHandle, newString);
+}
+
+/**
+ * Sets the number of items that are visible in the drop
+ * down portion of the receiver's list.
+ * <p>
+ * Note: This operation is a hint and is not supported on
+ * platforms that do not have this concept.
+ * </p>
+ *
+ * @param count the new number of items to be 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 3.0
+ */
+public void setVisibleItemCount (int count) {
+ checkWidget ();
+ if (count < 0) return;
+ visibleCount = count;
+}
+
+boolean checkSubwindow () {
+ return false;
+}
+
+boolean translateTraversal (GdkEventKey keyEvent) {
+ int key = keyEvent.keyval;
+ switch (key) {
+ case OS.GDK_KP_Enter:
+ case OS.GDK_Return: {
+ int /*long*/ imContext = imContext ();
+ if (imContext != 0) {
+ int /*long*/ [] preeditString = new int /*long*/ [1];
+ OS.gtk_im_context_get_preedit_string (imContext, preeditString, null, null);
+ if (preeditString [0] != 0) {
+ int length = OS.strlen (preeditString [0]);
+ OS.g_free (preeditString [0]);
+ if (length != 0) return false;
+ }
+ }
+ }
+ }
+ return super.translateTraversal (keyEvent);
+}
+
+String verifyText (String string, int start, int end) {
+ if (string.length () == 0 && start == end) return null;
+ Event event = new Event ();
+ event.text = string;
+ event.start = start;
+ event.end = end;
+ int /*long*/ eventPtr = OS.gtk_get_current_event ();
+ if (eventPtr != 0) {
+ GdkEventKey gdkEvent = new GdkEventKey ();
+ OS.memmove (gdkEvent, eventPtr, GdkEventKey.sizeof);
+ switch (gdkEvent.type) {
+ case OS.GDK_KEY_PRESS:
+ setKeyState (event, gdkEvent);
+ break;
+ }
+ OS.gdk_event_free (eventPtr);
+ }
+ /*
+ * It is possible (but unlikely), that application
+ * code could have disposed the widget in the verify
+ * event. If this happens, answer null to cancel
+ * the operation.
+ */
+ sendEvent (SWT.Verify, event);
+ if (!event.doit || isDisposed ()) return null;
+ return event.text;
+}
+
+}