| /******************************************************************************* |
| * Copyright (c) 2000, 2017 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 |
| * Lars Vogel <Lars.Vogel@vogella.com> - Bug 483540 |
| *******************************************************************************/ |
| package org.eclipse.swt.widgets; |
| |
| |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.events.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.swt.internal.*; |
| import org.eclipse.swt.internal.gtk.*; |
| |
| /** |
| * 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, OrientationChange</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 { |
| long /*int*/ buttonHandle, entryHandle, textRenderer, cellHandle, popupHandle, menuHandle, buttonBoxHandle, cellBoxHandle; |
| int lastEventTime, visibleCount = 10; |
| long /*int*/ imContext; |
| long /*int*/ gdkEventKey = 0; |
| int fixStart = -1, fixEnd = -1; |
| String [] items = new String [0]; |
| int indexSelected; |
| GdkRGBA background; |
| /** |
| * 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; |
| } |
| |
| private boolean delayedEnableWrap = false; // Bug 489640. Gtk3. |
| |
| /** |
| * 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. |
| * <p> |
| * Note: If control characters like '\n', '\t' etc. are used |
| * in the string, then the behavior is platform dependent. |
| * </p> |
| * @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><p> |
| * Also note, if control characters like '\n', '\t' etc. are used |
| * in the string, then the behavior is platform dependent. |
| * </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; |
| gtk_combo_box_insert(string, index); |
| if ((style & SWT.RIGHT_TO_LEFT) != 0 && popupHandle != 0) { |
| GTK.gtk_container_forall (popupHandle, display.setDirectionProc, GTK.GTK_TEXT_DIR_RTL); |
| } |
| } |
| |
| private void gtk_combo_box_insert(String string, int index) { |
| byte [] buffer = Converter.wcsToMbcs (string, true); |
| if (handle != 0) { |
| if (GTK.GTK3) { |
| gtk_combo_box_toggle_wrap(false); |
| GTK.gtk_combo_box_text_insert (handle, index, null, buffer); |
| gtk_combo_box_toggle_wrap(true); |
| } else { |
| GTK.gtk_combo_box_text_insert_text (handle, index, buffer); |
| } |
| } |
| } |
| |
| /** |
| * <p>Bug 489640, 438992. Drop-down appearance.</p> |
| * |
| * <p>In Gtk3, there is a lot of white space at the top of the combo drop-down. |
| * It's meant to put the first item near the cursor (See screen shots in bug 438992), but makes eclipse look buggy.</p> |
| * |
| * <p>Solution (438992): gtk_combo_box_get_wrap_width(1) fixes this problem, but introduces a performance regression. |
| * When multiple items are added in a loop, then if 'wrap' is enabled then after every insertion, gtk |
| * traverses the entire list and greedily re-computes the drop-down list size. |
| * This causes O(n^2) performance regression in that the longer the list, the longer the size computation takes. |
| * E.g Adding 1000 items takes almost 30 seconds.</p> |
| * |
| * <p>Solution ^2 (489640): We enabled wrap in a delayed/lazy way, only when display event loop is ran. |
| * This way the insertions occur at O(n) speed and we get the benefit of a neat drop-down list when the user launches the application. |
| * Run-time insertions and combo.add(..) are also covered by this logic.</p> |
| * |
| * <p>Gtk4 port note: |
| * - Note, Combo was re-written in Gtk3 and it will be re-written again in Gtk4. See: |
| * https://mail.gnome.org/archives/gtk-list/2016-December/msg00036.html |
| * https://raw.githubusercontent.com/gnome-design-team/gnome-mockups/master/theming/widgets/combobox-replacements.png // mockup screen shot. |
| * - So probably this workaround should be removed in Gtk4 port. Feel free to validate via Bug489640_SlowCombo and Bug489640_SlowComboSingleItem test snippets.</p> |
| * |
| * <p>CSS note: Do not use the CSS 'appears-as-list' style as done in: |
| * https://git.eclipse.org/r/#/c/117681/6/bundles/org.eclipse.swt/Eclipse+SWT/gtk/org/eclipse/swt/widgets/Combo.java |
| * It's a poorly working hack. If list has more than +-1000 entries, then we get visual cheese and jvm crashes. </p> |
| */ |
| private void gtk_combo_box_toggle_wrap (boolean wrap) { |
| if (handle == 0) return; |
| if (GTK.GTK3) { |
| if (!wrap) { |
| if (GTK.gtk_combo_box_get_wrap_width(handle) == 1) { |
| GTK.gtk_combo_box_set_wrap_width(handle, 0); |
| } |
| } else { |
| if (delayedEnableWrap) { |
| return; |
| } else { |
| delayedEnableWrap = true; |
| display.asyncExec(() -> { |
| if (!isDisposed() && handle != 0) { |
| GTK.gtk_combo_box_set_wrap_width(handle, 1); |
| delayedEnableWrap = false; |
| } |
| }); |
| } |
| } |
| } else { // GTK2 |
| if (wrap) { |
| GTK.gtk_combo_box_set_wrap_width(handle, 1); |
| } else { |
| GTK.gtk_combo_box_set_wrap_width(handle, 0); |
| } |
| } |
| } |
| |
| /** |
| * 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 a segment listener. |
| * <p> |
| * A <code>SegmentEvent</code> is sent whenever text content is being modified or |
| * a segment listener is added or removed. You can |
| * customize the appearance of text by indicating certain characters to be inserted |
| * at certain text offsets. This may be used for bidi purposes, e.g. when |
| * adjacent segments of right-to-left text should not be reordered relative to |
| * each other. |
| * E.g., multiple Java string literals in a right-to-left language |
| * should generally remain in logical order to each other, that is, the |
| * way they are stored. |
| * </p> |
| * <p> |
| * <b>Warning</b>: This API is currently only implemented on Windows. |
| * <code>SegmentEvent</code>s won't be sent on GTK and Cocoa. |
| * </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 SegmentEvent |
| * @see SegmentListener |
| * @see #removeSegmentListener |
| * |
| * @since 3.103 |
| */ |
| public void addSegmentListener (SegmentListener listener) { |
| checkWidget (); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| addListener (SWT.Segments, new TypedListener (listener)); |
| } |
| |
| /** |
| * Adds the listener to the collection of listeners who will |
| * be notified when the user changes the receiver's selection, by sending |
| * it one of the messages defined in the <code>SelectionListener</code> |
| * interface. |
| * <p> |
| * <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; |
| } |
| |
| @Override |
| 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 = GTK.gtk_editable_get_position (entryHandle); |
| GTK.gtk_editable_select_region (entryHandle, position, position); |
| } |
| } |
| |
| void clearText () { |
| 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 = GTK.gtk_combo_box_get_active (handle); |
| if (index != -1) { |
| long /*int*/ modelHandle = GTK.gtk_combo_box_get_model (handle); |
| long /*int*/ [] ptr = new long /*int*/ [1]; |
| long /*int*/ iter = OS.g_malloc (GTK.GtkTreeIter_sizeof ()); |
| GTK.gtk_tree_model_iter_nth_child (modelHandle, iter, 0, index); |
| GTK.gtk_tree_model_get (modelHandle, iter, 0, ptr, -1); |
| OS.g_free (iter); |
| if (ptr [0] != 0 && C.strlen (ptr [0]) > 0) postEvent (SWT.Modify); |
| OS.g_free (ptr [0]); |
| } |
| } else { |
| GTK.gtk_entry_set_text (entryHandle, new byte[1]); |
| } |
| GTK.gtk_combo_box_set_active (handle, -1); |
| OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED); |
| } |
| |
| @Override |
| Point computeSizeInPixels (int wHint, int hHint, boolean changed) { |
| checkWidget (); |
| if ((style & SWT.READ_ONLY) != 0 || GTK.GTK3) { |
| 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]; |
| GTK.gtk_widget_realize (entryHandle); |
| long /*int*/ layout = GTK.gtk_entry_get_layout (entryHandle); |
| OS.pango_layout_get_pixel_size (layout, w, h); |
| int xborder = Display.INNER_BORDER, yborder = Display.INNER_BORDER; |
| Point thickness = getThickness (entryHandle); |
| xborder += thickness.x; |
| yborder += thickness.y; |
| int [] property = new int [1]; |
| GTK.gtk_widget_style_get (entryHandle, OS.interior_focus, property, 0); |
| if (property [0] == 0) { |
| GTK.gtk_widget_style_get (entryHandle, OS.focus_line_width, property, 0); |
| xborder += property [0]; |
| yborder += property [0]; |
| } |
| int width = w [0] + xborder * 2; |
| int height = h [0] + yborder * 2; |
| GtkRequisition arrowRequesition = new GtkRequisition (); |
| gtk_widget_get_preferred_size (buttonHandle, arrowRequesition); |
| GtkRequisition listRequesition = new GtkRequisition (); |
| long /*int*/ listParent = GTK.gtk_bin_get_child(popupHandle); |
| gtk_widget_get_preferred_size (listParent, listRequesition); |
| width = Math.max (listRequesition.width, width) + arrowRequesition.width; |
| 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) GTK.gtk_editable_copy_clipboard (entryHandle); |
| } |
| |
| @Override |
| 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); |
| GTK.gtk_widget_set_has_window (fixedHandle, true); |
| long /*int*/ oldList = GTK.gtk_window_list_toplevels (); |
| if ((style & SWT.READ_ONLY) != 0) { |
| handle = GTK.gtk_combo_box_text_new (); |
| if (handle == 0) error (SWT.ERROR_NO_HANDLES); |
| cellHandle = GTK.gtk_bin_get_child (handle); |
| if (cellHandle == 0) error (SWT.ERROR_NO_HANDLES); |
| gtk_combo_box_toggle_wrap(true); |
| } else { |
| handle = GTK.gtk_combo_box_text_new_with_entry(); |
| if (handle == 0) error (SWT.ERROR_NO_HANDLES); |
| entryHandle = GTK.gtk_bin_get_child (handle); |
| if (entryHandle == 0) error (SWT.ERROR_NO_HANDLES); |
| if (GTK.GTK3) { |
| imContext = OS.imContextLast(); |
| } |
| } |
| popupHandle = findPopupHandle (oldList); |
| GTK.gtk_container_add (fixedHandle, handle); |
| textRenderer = GTK.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; |
| 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); |
| GTK.gtk_cell_layout_clear (handle); |
| display.setWarnings (warnings); |
| GTK.gtk_cell_layout_pack_start (handle, textRenderer, true); |
| GTK.gtk_cell_layout_set_attributes (handle, textRenderer, OS.text, 0, 0); |
| /* |
| * Feature in GTK. Toggle button creation differs between GTK versions. The |
| * fix is to call size_request() to force the creation of the button |
| * for those versions of GTK that defer the creation. |
| */ |
| menuHandle = findMenuHandle (); |
| if (menuHandle != 0) OS.g_object_ref (menuHandle); |
| buttonHandle = findButtonHandle (); |
| if (buttonHandle != 0) OS.g_object_ref (buttonHandle); |
| if (buttonBoxHandle != 0) OS.g_object_ref (buttonBoxHandle); |
| if (cellHandle != 0) cellBoxHandle = GTK.gtk_widget_get_parent(cellHandle); |
| if (cellBoxHandle != 0) OS.g_object_ref(cellBoxHandle); |
| /* |
| * 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) { |
| GTK.gtk_widget_set_receives_default (buttonHandle, false); |
| } |
| // In GTK 3 font description is inherited from parent widget which is not how SWT has always worked, |
| // reset to default font to get the usual behavior |
| if (GTK.GTK3) { |
| setFontDescription(defaultFont().handle); |
| } |
| } |
| |
| /** |
| * 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) GTK.gtk_editable_cut_clipboard (entryHandle); |
| } |
| |
| @Override |
| GdkRGBA defaultBackground () { |
| return display.getSystemColor(SWT.COLOR_LIST_BACKGROUND).handleRGBA; |
| } |
| |
| @Override |
| void deregister () { |
| super.deregister (); |
| if (buttonHandle != 0) display.removeWidget (buttonHandle); |
| if (entryHandle != 0) display.removeWidget (entryHandle); |
| if (popupHandle != 0) display.removeWidget (popupHandle); |
| if (menuHandle != 0) display.removeWidget (menuHandle); |
| long /*int*/ imContext = imContext (); |
| if (imContext != 0) display.removeWidget (imContext); |
| } |
| |
| @Override |
| boolean filterKey (int keyval, long /*int*/ event) { |
| int time = GDK.gdk_event_get_time (event); |
| if (time != lastEventTime) { |
| lastEventTime = time; |
| long /*int*/ imContext = imContext (); |
| if (imContext != 0) { |
| return GTK.gtk_im_context_filter_keypress (imContext, event); |
| } |
| } |
| gdkEventKey = event; |
| return false; |
| } |
| |
| long /*int*/ findPopupHandle (long /*int*/ oldList) { |
| long /*int*/ result = 0; |
| long /*int*/ currentList = GTK.gtk_window_list_toplevels(); |
| long /*int*/ oldFromList = oldList; |
| long /*int*/ newFromList = OS.g_list_last(currentList); |
| boolean isFound; |
| while (newFromList != 0) { |
| long /*int*/ newToplevel = OS.g_list_data(newFromList); |
| isFound = false; |
| oldFromList = oldList; |
| while (oldFromList != 0) { |
| long /*int*/ oldToplevel = OS.g_list_data(oldFromList); |
| if (newToplevel == oldToplevel) { |
| isFound = true; |
| break; |
| } |
| oldFromList = OS.g_list_next(oldFromList); |
| } |
| if (!isFound) { |
| result = newToplevel; |
| break; |
| } |
| newFromList = OS.g_list_previous(newFromList); |
| } |
| OS.g_list_free(oldList); |
| OS.g_list_free(currentList); |
| return result; |
| } |
| |
| @Override |
| Point resizeCalculationsGTK3 (long /*int*/ widget, int width, int height) { |
| Point sizes = new Point (width, height); |
| /* |
| * Feature in GTK3.20+: size calculations take into account GtkCSSNode |
| * elements which we cannot access. If the to-be-allocated size minus |
| * these elements is < 0, allocate the preferred size instead. See bug 486068. |
| */ |
| if (GTK.GTK_VERSION >= OS.VERSION(3, 20, 0) && widget == handle) { |
| GtkRequisition minimumSize = new GtkRequisition(); |
| GtkRequisition naturalSize = new GtkRequisition(); |
| // Use the handle only for READ_ONLY Combos, otherwise use the GtkEntry |
| long /*int*/ preferredSizeHandle = ((style & SWT.READ_ONLY) == 0 && entryHandle != 0) ? entryHandle : handle; |
| GTK.gtk_widget_get_preferred_size(preferredSizeHandle, minimumSize, naturalSize); |
| /* |
| * Use the smallest of the minimum/natural sizes to prevent oversized |
| * widgets. |
| */ |
| int smallestWidth = Math.min(minimumSize.width, naturalSize.width); |
| int smallestHeight = Math.min(minimumSize.height, naturalSize.height); |
| sizes.x = (width - (smallestWidth - width)) < 0 ? smallestWidth : width; |
| sizes.y = (height - (smallestHeight - height)) < 0 ? smallestHeight : height; |
| return sizes; |
| } else { |
| return super.resizeCalculationsGTK3(widget, width, height); |
| } |
| } |
| |
| long /*int*/ findButtonHandle() { |
| /* |
| * 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. |
| */ |
| long /*int*/ result = 0; |
| long /*int*/ childHandle = handle; |
| |
| /* |
| * The only direct child of GtkComboBox since 3.20 is GtkBox and |
| * gtk_container_forall iterates over direct children only so handle for the |
| * GtkBox has to be retrieved first. |
| * As it's internal child one can't get it in other way. |
| */ |
| if (GTK.GTK_VERSION >= OS.VERSION(3, 20, 0)) { |
| GTK.gtk_container_forall(handle, display.allChildrenProc, 0); |
| if (display.allChildren != 0) { |
| long /*int*/ list = display.allChildren; |
| while (list != 0) { |
| long /*int*/ widget = OS.g_list_data(list); |
| if (widget != 0) { |
| childHandle = widget; |
| break; |
| } |
| list = OS.g_list_next(list); |
| } |
| OS.g_list_free(display.allChildren); |
| display.allChildren = 0; |
| } |
| buttonBoxHandle = childHandle; |
| } |
| |
| GTK.gtk_container_forall (childHandle, display.allChildrenProc, 0); |
| if (display.allChildren != 0) { |
| long /*int*/ list = display.allChildren; |
| while (list != 0) { |
| long /*int*/ widget = OS.g_list_data (list); |
| if (GTK.GTK_IS_BUTTON (widget)) { |
| result = widget; |
| break; |
| } |
| list = OS.g_list_next (list); |
| } |
| OS.g_list_free (display.allChildren); |
| display.allChildren = 0; |
| } |
| return result; |
| } |
| |
| long /*int*/ findMenuHandle() { |
| if (popupHandle == 0) return 0; |
| long /*int*/ result = 0; |
| GTK.gtk_container_forall (popupHandle, display.allChildrenProc, 0); |
| if (display.allChildren != 0) { |
| long /*int*/ list = display.allChildren; |
| while (list != 0) { |
| long /*int*/ widget = OS.g_list_data (list); |
| if (OS.G_OBJECT_TYPE (widget) == GTK.GTK_TYPE_MENU ()) { |
| result = widget; |
| break; |
| } |
| list = OS.g_list_next (list); |
| } |
| OS.g_list_free (display.allChildren); |
| display.allChildren = 0; |
| } |
| return result; |
| } |
| |
| @Override |
| void fixModal (long /*int*/ group, long /*int*/ modalGroup) { |
| if (popupHandle != 0) { |
| if (group != 0) { |
| GTK.gtk_window_group_add_window (group, popupHandle); |
| } else { |
| if (modalGroup != 0) { |
| GTK.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) { |
| long /*int*/ imContext = imContext (); |
| if (imContext != 0) { |
| GTK.gtk_im_context_filter_keypress (imContext, gdkEventKey); |
| gdkEventKey = -1; |
| return; |
| } |
| } |
| gdkEventKey = 0; |
| } |
| |
| @Override |
| long /*int*/ fontHandle () { |
| if (entryHandle != 0) return entryHandle; |
| return super.fontHandle (); |
| } |
| |
| @Override |
| long /*int*/ focusHandle () { |
| if (entryHandle != 0) return entryHandle; |
| return super.focusHandle (); |
| } |
| |
| @Override |
| boolean hasFocus () { |
| if (super.hasFocus ()) return true; |
| if (entryHandle != 0 && GTK.gtk_widget_has_focus (entryHandle)) return true; |
| return false; |
| } |
| |
| @Override |
| void hookEvents () { |
| super.hookEvents (); |
| OS.g_signal_connect_closure (handle, OS.changed, display.getClosure (CHANGED), true); |
| |
| if (entryHandle != 0) { |
| OS.g_signal_connect_closure (entryHandle, OS.changed, display.getClosure (CHANGED), true); |
| OS.g_signal_connect_closure (entryHandle, OS.insert_text, display.getClosure (INSERT_TEXT), false); |
| OS.g_signal_connect_closure (entryHandle, OS.delete_text, display.getClosure (DELETE_TEXT), false); |
| OS.g_signal_connect_closure (entryHandle, OS.activate, display.getClosure (ACTIVATE), false); |
| OS.g_signal_connect_closure (entryHandle, OS.populate_popup, display.getClosure (POPULATE_POPUP), false); |
| } |
| |
| hookEvents(new long /*int*/ [] {buttonHandle, entryHandle, menuHandle}); |
| |
| long /*int*/ imContext = imContext (); |
| if (imContext != 0) { |
| OS.g_signal_connect_closure (imContext, OS.commit, display.getClosure (COMMIT), false); |
| int id = OS.g_signal_lookup (OS.commit, GTK.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); |
| } |
| } |
| |
| void hookEvents(long /*int*/ [] handles) { |
| int eventMask = GDK.GDK_POINTER_MOTION_MASK | GDK.GDK_BUTTON_PRESS_MASK | GDK.GDK_BUTTON_RELEASE_MASK; |
| for (int i=0; i<handles.length; i++) { |
| long /*int*/ eventHandle = handles [i]; |
| if (eventHandle != 0) { |
| /* Connect the mouse signals */ |
| GTK.gtk_widget_add_events (eventHandle, eventMask); |
| OS.g_signal_connect_closure_by_id (eventHandle, display.signalIds [BUTTON_PRESS_EVENT], 0, display.getClosure (BUTTON_PRESS_EVENT), false); |
| OS.g_signal_connect_closure_by_id (eventHandle, display.signalIds [BUTTON_RELEASE_EVENT], 0, display.getClosure (BUTTON_RELEASE_EVENT), false); |
| OS.g_signal_connect_closure_by_id (eventHandle, display.signalIds [MOTION_NOTIFY_EVENT], 0, display.getClosure (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.getClosure (BUTTON_PRESS_EVENT_INVERSE), true); |
| OS.g_signal_connect_closure_by_id (eventHandle, display.signalIds [BUTTON_RELEASE_EVENT], 0, display.getClosure (BUTTON_RELEASE_EVENT_INVERSE), true); |
| OS.g_signal_connect_closure_by_id (eventHandle, display.signalIds [MOTION_NOTIFY_EVENT], 0, display.getClosure (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.getClosure (EVENT_AFTER), false); |
| } |
| if (OS.G_OBJECT_TYPE (eventHandle) == GTK.GTK_TYPE_MENU ()) { |
| OS.g_signal_connect_closure(eventHandle, OS.selection_done, display.getClosure (SELECTION_DONE), true); |
| } |
| } |
| } |
| } |
| |
| long /*int*/ imContext () { |
| if (imContext != 0) return imContext; |
| return entryHandle != 0 ? GTK.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 (GTK.gtk_combo_box_get_active (handle) == index) { |
| clearText (); |
| } |
| } |
| |
| /** |
| * 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(); |
| clearText (); |
| } |
| |
| @Override |
| boolean dragDetect(int x, int y, boolean filter, boolean dragOnTimeout, boolean[] consume) { |
| if (filter && entryHandle != 0) { |
| int [] index = new int [1]; |
| int [] trailing = new int [1]; |
| long /*int*/ layout = GTK.gtk_entry_get_layout (entryHandle); |
| OS.pango_layout_xy_to_index (layout, x * OS.PANGO_SCALE, y * OS.PANGO_SCALE, index, trailing); |
| long /*int*/ ptr = OS.pango_layout_get_text (layout); |
| int position = (int)/*64*/OS.g_utf8_pointer_to_offset (ptr, ptr + index[0]) + trailing[0]; |
| int [] start = new int [1]; |
| int [] end = new int [1]; |
| GTK.gtk_editable_get_selection_bounds (entryHandle, start, end); |
| if (start [0] <= position && position < end [0]) { |
| if (super.dragDetect (x, y, filter, dragOnTimeout, consume)) { |
| if (consume != null) consume [0] = true; |
| return true; |
| } |
| } |
| return false; |
| } |
| return super.dragDetect (x, y, filter, dragOnTimeout, consume); |
| } |
| |
| @Override |
| long /*int*/ enterExitHandle () { |
| return fixedHandle; |
| } |
| |
| @Override |
| long /*int*/ eventWindow () { |
| return paintWindow (); |
| } |
| |
| @Override |
| GdkColor getBackgroundGdkColor () { |
| assert !GTK.GTK3 : "GTK2 code was run by GTK3"; |
| return getBaseGdkColor (); |
| } |
| |
| /** |
| * Returns a point describing the location of the caret relative |
| * to the receiver. |
| * |
| * @return a point, the location of the caret |
| * |
| * @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 3.8 |
| */ |
| public Point getCaretLocation () { |
| checkWidget (); |
| return DPIUtil.autoScaleDown(getCaretLocationInPixels()); |
| } |
| |
| |
| Point getCaretLocationInPixels () { |
| checkWidget (); |
| if ((style & SWT.READ_ONLY) != 0) { |
| return new Point (0, 0); |
| } |
| int index = GTK.gtk_editable_get_position (entryHandle); |
| index = GTK.gtk_entry_text_index_to_layout_index (entryHandle, index); |
| int [] offset_x = new int [1], offset_y = new int [1]; |
| GTK.gtk_entry_get_layout_offsets (entryHandle, offset_x, offset_y); |
| long /*int*/ layout = GTK.gtk_entry_get_layout (entryHandle); |
| PangoRectangle pos = new PangoRectangle (); |
| OS.pango_layout_index_to_pos (layout, index, pos); |
| Point thickness = getThickness (entryHandle); |
| int x = offset_x [0] + OS.PANGO_PIXELS (pos.x) - getBorderWidthInPixels () - thickness.x; |
| int y = offset_y [0] + OS.PANGO_PIXELS (pos.y) - thickness.y; |
| return new Point (x, y); |
| } |
| |
| /** |
| * Returns the character position of the caret. |
| * <p> |
| * Indexing is zero based. |
| * </p> |
| * |
| * @return the position of the caret |
| * |
| * @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 3.8 |
| */ |
| public int getCaretPosition () { |
| checkWidget (); |
| if ((style & SWT.READ_ONLY) != 0) { |
| return 0; |
| } |
| long /*int*/ ptr = GTK.gtk_entry_get_text (entryHandle); |
| return (int)/*64*/OS.g_utf8_offset_to_utf16_offset (ptr, GTK.gtk_editable_get_position (entryHandle)); |
| } |
| |
| @Override |
| GdkRGBA getContextBackgroundGdkRGBA () { |
| assert GTK.GTK3 : "GTK3 code was run by GTK2"; |
| if (background != null && (state & BACKGROUND) != 0) { |
| return background; |
| } |
| return defaultBackground(); |
| } |
| |
| @Override |
| GdkColor getForegroundGdkColor () { |
| assert !GTK.GTK3 : "GTK2 code was run by GTK3"; |
| 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 (), 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 (); |
| return popupHandle != 0 && GTK.gtk_widget_get_visible (popupHandle); |
| } |
| |
| @Override |
| 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 |
| */ |
| @Override |
| public int getOrientation () { |
| return super.getOrientation (); |
| } |
| |
| /** |
| * 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; |
| int index = GTK.gtk_combo_box_get_active (handle); |
| if (index != -1) length = getItem (index).length (); |
| return new Point (0, length); |
| } |
| int [] start = new int [1]; |
| int [] end = new int [1]; |
| if (entryHandle != 0) { |
| GTK.gtk_editable_get_selection_bounds (entryHandle, start, end); |
| long /*int*/ ptr = GTK.gtk_entry_get_text (entryHandle); |
| start[0] = (int)/*64*/OS.g_utf8_offset_to_utf16_offset (ptr, start[0]); |
| end[0] = (int)/*64*/OS.g_utf8_offset_to_utf16_offset (ptr, end[0]); |
| } |
| 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(); |
| return GTK.gtk_combo_box_get_active (handle); |
| } |
| |
| /** |
| * 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) { |
| long /*int*/ str = GTK.gtk_entry_get_text (entryHandle); |
| if (str == 0) return ""; |
| int length = C.strlen (str); |
| byte [] buffer = new byte [length]; |
| C.memmove (buffer, str, length); |
| return new String (Converter.mbcsToWcs (buffer)); |
| } else { |
| int index = GTK.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(); |
| return DPIUtil.autoScaleDown(getTextHeightInPixels()); |
| } |
| |
| |
| int getTextHeightInPixels () { |
| checkWidget(); |
| GtkRequisition requisition = new GtkRequisition (); |
| gtk_widget_size_request (handle, requisition); |
| if (GTK.GTK3) { |
| return requisition.height; |
| } else { |
| return GTK.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 ? GTK.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; |
| } |
| |
| @Override |
| long /*int*/ gtk_activate (long /*int*/ widget) { |
| sendSelectionEvent (SWT.DefaultSelection); |
| return 0; |
| } |
| |
| @Override |
| long /*int*/ gtk_button_press_event (long /*int*/ widget, long /*int*/ 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. |
| */ |
| GdkEventButton gdkEvent = new GdkEventButton (); |
| OS.memmove (gdkEvent, event, GdkEventButton.sizeof); |
| if (gdkEvent.type == GDK.GDK_BUTTON_PRESS && gdkEvent.button == 1) { |
| return gtk_button_press_event(widget, event, false); |
| } |
| return super.gtk_button_press_event (widget, event); |
| } |
| |
| @Override |
| long /*int*/ gtk_changed (long /*int*/ widget) { |
| 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 = GTK.gtk_combo_box_get_active (handle); |
| if (index != -1) sendSelectionEvent (SWT.Selection); |
| indexSelected = -1; |
| return 0; |
| } |
| /* |
| * 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; |
| long /*int*/ eventPtr = GTK.gtk_get_current_event (); |
| if (eventPtr != 0) { |
| GdkEventKey gdkEvent = new GdkEventKey (); |
| OS.memmove (gdkEvent, eventPtr, GdkEventKey.sizeof); |
| switch (gdkEvent.type) { |
| case GDK.GDK_KEY_PRESS: |
| keyPress = true; |
| break; |
| } |
| GDK.gdk_event_free (eventPtr); |
| } |
| if (keyPress) { |
| postEvent (SWT.Modify); |
| } else { |
| sendEvent (SWT.Modify); |
| } |
| return 0; |
| } |
| |
| @Override |
| long /*int*/ gtk_commit (long /*int*/ imContext, long /*int*/ text) { |
| if (text == 0) return 0; |
| if (!GTK.gtk_editable_get_editable (entryHandle)) return 0; |
| int length = C.strlen (text); |
| if (length == 0) return 0; |
| byte [] buffer = new byte [length]; |
| C.memmove (buffer, text, length); |
| char [] chars = Converter.mbcsToWcs (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, GTK.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 (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) { |
| GTK.gtk_editable_set_position (entryHandle, fixStart); |
| GTK.gtk_editable_select_region (entryHandle, fixStart, fixEnd); |
| } |
| fixStart = fixEnd = -1; |
| return 0; |
| } |
| |
| @Override |
| long /*int*/ gtk_delete_text (long /*int*/ widget, long /*int*/ start_pos, long /*int*/ end_pos) { |
| if (!hooks (SWT.Verify) && !filters (SWT.Verify)) return 0; |
| long /*int*/ ptr = GTK.gtk_entry_get_text (entryHandle); |
| if (end_pos == -1) end_pos = OS.g_utf8_strlen (ptr, -1); |
| int start = (int)/*64*/OS.g_utf8_offset_to_utf16_offset (ptr, start_pos); |
| int end = (int)/*64*/OS.g_utf8_offset_to_utf16_offset (ptr, end_pos); |
| String newText = verifyText ("", start, end); |
| 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 (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); |
| GTK.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); |
| GTK.gtk_editable_set_position (entryHandle, pos [0]); |
| } |
| } |
| return 0; |
| } |
| |
| @Override |
| long /*int*/ gtk_draw (long /*int*/ widget, long /*int*/ cairo) { |
| /* |
| * Feature in GTK3.20+: Combos have their clip unioned |
| * with the parent container (Composite in this case). This causes |
| * overdrawing into neighbouring widgets and breaks resizing. |
| * |
| * The fix is to adjust the clip and allocation of the Combo (and its children) |
| * in the parent Composite's draw handler, as it ensures that the draw events |
| * going to the Combo have the correct geometry specifications. This has to |
| * happen in the parent Composite since neighouring widgets that share the |
| * same parent are affected. See bug 500703. |
| * |
| * An additional fix was implemented to support non-READ_ONLY Combos, as well |
| * as the case when one Composite has multiple Combos within it -- see bug 535323. |
| */ |
| if (GTK.GTK_VERSION >= OS.VERSION(3, 20, 0)) { |
| long /*int*/ parentHandle = GTK.gtk_widget_get_parent(fixedHandle); |
| if (parentHandle != 0) { |
| if (parent.fixClipHandle == 0) parent.fixClipHandle = parentHandle; |
| GTK.gtk_widget_queue_draw(parentHandle); |
| if ((style & SWT.READ_ONLY) != 0) { |
| long /*int*/ [] array = {fixedHandle, handle, buttonBoxHandle, buttonHandle, cellBoxHandle, cellHandle}; |
| parent.fixClipMap.put(this, array); |
| } else { |
| long /*int*/ [] array = {fixedHandle, handle, entryHandle, buttonBoxHandle, buttonHandle}; |
| parent.fixClipMap.put(this, array); |
| } |
| } |
| } |
| return super.gtk_draw(widget, cairo); |
| } |
| |
| @Override |
| long /*int*/ gtk_event_after (long /*int*/ widget, long /*int*/ 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. |
| */ |
| GdkEvent event = new GdkEvent (); |
| OS.memmove (event, gdkEvent, GdkEvent.sizeof); |
| switch (event.type) { |
| case GDK.GDK_BUTTON_PRESS: { |
| GdkEventButton gdkEventButton = new GdkEventButton (); |
| OS.memmove (gdkEventButton, gdkEvent, GdkEventButton.sizeof); |
| if (gdkEventButton.button == 1) { |
| if (!sendMouseEvent (SWT.MouseDown, gdkEventButton.button, display.clickCount, 0, false, gdkEventButton.time, gdkEventButton.x_root, gdkEventButton.y_root, false, gdkEventButton.state)) { |
| return 1; |
| } |
| if ((style & SWT.READ_ONLY) == 0 && widget == buttonHandle) { |
| GTK.gtk_widget_grab_focus (entryHandle); |
| } |
| } |
| break; |
| } |
| case GDK.GDK_FOCUS_CHANGE: { |
| if ((style & SWT.READ_ONLY) == 0) { |
| GdkEventFocus gdkEventFocus = new GdkEventFocus (); |
| OS.memmove (gdkEventFocus, gdkEvent, GdkEventFocus.sizeof); |
| if (gdkEventFocus.in != 0) { |
| if (GTK.GTK_VERSION >= OS.VERSION(3, 20, 0)) { |
| GTK.gtk_widget_set_focus_on_click(handle, false); |
| } else { |
| GTK.gtk_combo_box_set_focus_on_click (handle, false); |
| } |
| } else { |
| if (GTK.GTK_VERSION >= OS.VERSION(3, 20, 0)) { |
| GTK.gtk_widget_set_focus_on_click(handle, true); |
| } else { |
| GTK.gtk_combo_box_set_focus_on_click (handle, true); |
| } |
| } |
| } |
| break; |
| } |
| } |
| return super.gtk_event_after(widget, gdkEvent); |
| } |
| |
| @Override |
| long /*int*/ gtk_focus_out_event (long /*int*/ widget, long /*int*/ event) { |
| fixIM (); |
| return super.gtk_focus_out_event (widget, event); |
| } |
| |
| @Override |
| long /*int*/ gtk_insert_text (long /*int*/ widget, long /*int*/ new_text, long /*int*/ new_text_length, long /*int*/ position) { |
| 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]; |
| C.memmove (buffer, new_text, buffer.length); |
| String oldText = new String (Converter.mbcsToWcs (buffer)); |
| int [] pos = new int [1]; |
| C.memmove (pos, position, 4); |
| long /*int*/ ptr = GTK.gtk_entry_get_text (entryHandle); |
| if (pos [0] == -1) pos [0] = (int)/*64*/OS.g_utf8_strlen (ptr, -1); |
| int start = (int)/*64*/OS.g_utf8_offset_to_utf16_offset (ptr, pos [0]); |
| String newText = verifyText (oldText, start, start); |
| if (newText != oldText) { |
| int [] newStart = new int [1], newEnd = new int [1]; |
| GTK.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); |
| GTK.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 (newText, false); |
| OS.g_signal_handlers_block_matched (entryHandle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, INSERT_TEXT); |
| GTK.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]; |
| } |
| C.memmove (position, pos, 4); |
| OS.g_signal_stop_emission_by_name (entryHandle, OS.insert_text); |
| } |
| return 0; |
| } |
| |
| @Override |
| long /*int*/ gtk_key_press_event (long /*int*/ widget, long /*int*/ event) { |
| long /*int*/ result = super.gtk_key_press_event (widget, event); |
| if (result != 0) { |
| gdkEventKey = 0; |
| fixIM (); |
| return result; |
| } |
| if (gdkEventKey == -1) result = 1; |
| gdkEventKey = 0; |
| if ((style & SWT.READ_ONLY) == 0) { |
| GdkEventKey keyEvent = new GdkEventKey (); |
| OS.memmove (keyEvent, event, GdkEventKey.sizeof); |
| int oldIndex = GTK.gtk_combo_box_get_active (handle); |
| int newIndex = oldIndex; |
| int key = keyEvent.keyval; |
| switch (key) { |
| case GDK.GDK_Down: |
| case GDK.GDK_KP_Down: |
| if (oldIndex != (items.length - 1)) { |
| newIndex = oldIndex + 1; |
| } |
| break; |
| case GDK.GDK_Up: |
| case GDK.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 GDK.GDK_Page_Up: |
| case GDK.GDK_KP_Page_Up: |
| newIndex = 0; |
| break; |
| case GDK.GDK_Page_Down: |
| case GDK.GDK_KP_Page_Down: |
| newIndex = items.length - 1; |
| break; |
| } |
| if (newIndex != oldIndex) { |
| GTK.gtk_combo_box_set_active (handle, newIndex); |
| return 1; |
| } |
| } |
| return result; |
| } |
| |
| @Override |
| long /*int*/ gtk_populate_popup (long /*int*/ widget, long /*int*/ menu) { |
| if ((style & SWT.RIGHT_TO_LEFT) != 0) { |
| GTK.gtk_widget_set_direction (menu, GTK.GTK_TEXT_DIR_RTL); |
| GTK.gtk_container_forall (menu, display.setDirectionProc, GTK.GTK_TEXT_DIR_RTL); |
| } |
| return 0; |
| } |
| |
| @Override |
| long /*int*/ gtk_selection_done(long /*int*/ menushell) { |
| int index = GTK.gtk_combo_box_get_active (handle); |
| if (indexSelected == -1){ |
| indexSelected = index; |
| } |
| else if (index != -1 && indexSelected == index) { |
| sendSelectionEvent (SWT.Selection); |
| } |
| return 0; |
| } |
| |
| @Override |
| long /*int*/ gtk_style_set (long /*int*/ widget, long /*int*/ previousStyle) { |
| setButtonHandle (findButtonHandle ()); |
| setMenuHandle (findMenuHandle ()); |
| return super.gtk_style_set (widget, previousStyle); |
| } |
| |
| /** |
| * 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; |
| } |
| |
| @Override |
| boolean isFocusHandle(long /*int*/ widget) { |
| if (buttonHandle != 0 && widget == buttonHandle) return true; |
| if (entryHandle != 0 && widget == entryHandle) return true; |
| return super.isFocusHandle (widget); |
| } |
| |
| @Override |
| long /*int*/ paintWindow () { |
| long /*int*/ childHandle = entryHandle != 0 ? entryHandle : handle; |
| GTK.gtk_widget_realize (childHandle); |
| long /*int*/ window = gtk_widget_get_window (childHandle); |
| if ((style & SWT.READ_ONLY) != 0) return window; |
| long /*int*/ children = GDK.gdk_window_get_children (window); |
| if (children != 0) { |
| /* |
| * The only direct child of GtkComboBox since 3.20 is GtkBox thus the children |
| * have to be traversed to get to the entry one. |
| */ |
| if (GTK.GTK_VERSION >= OS.VERSION(3, 20, 0)) { |
| do { |
| window = OS.g_list_data (children); |
| } while ((children = OS.g_list_next (children)) != 0); |
| } else { |
| 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) GTK.gtk_editable_paste_clipboard (entryHandle); |
| } |
| |
| @Override |
| long /*int*/ parentingHandle() { |
| return fixedHandle; |
| } |
| |
| @Override |
| void register () { |
| super.register (); |
| if (buttonHandle != 0) display.addWidget (buttonHandle, this); |
| if (entryHandle != 0) display.addWidget (entryHandle, this); |
| if (popupHandle != 0) display.addWidget (popupHandle, this); |
| if (menuHandle != 0) display.addWidget (menuHandle, this); |
| long /*int*/ imContext = imContext (); |
| if (imContext != 0) display.addWidget (imContext, this); |
| } |
| |
| @Override |
| void releaseHandle () { |
| super.releaseHandle (); |
| if (menuHandle != 0) { |
| OS.g_object_unref (menuHandle); |
| } |
| if (buttonHandle != 0) { |
| OS.g_object_unref (buttonHandle); |
| } |
| if (buttonBoxHandle != 0) { |
| OS.g_object_unref (buttonBoxHandle); |
| } |
| if (cellBoxHandle != 0) { |
| OS.g_object_unref (cellBoxHandle); |
| } |
| cellBoxHandle = buttonBoxHandle = menuHandle = buttonHandle = entryHandle = 0; |
| } |
| |
| @Override |
| 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 (GTK.gtk_combo_box_get_active (handle) == index) clearText (); |
| if (handle != 0) GTK.gtk_combo_box_text_remove(handle, index); |
| } |
| |
| /** |
| * 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; |
| int index = GTK.gtk_combo_box_get_active (handle); |
| if (start <= index && index <= end) clearText(); |
| |
| if (GTK.GTK3) gtk_combo_box_toggle_wrap(false); |
| for (int i = end; i >= start; i--) { |
| if (handle != 0) GTK.gtk_combo_box_text_remove(handle, i); |
| } |
| if (GTK.GTK3) gtk_combo_box_toggle_wrap(true); |
| } |
| |
| /** |
| * 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]; |
| clearText (); |
| if (GTK.GTK3) { |
| gtk_combo_box_text_remove_all(); |
| } else { |
| for (int i = count - 1; i >= 0; i--) { |
| if (handle != 0) GTK.gtk_combo_box_text_remove (handle, i); |
| } |
| } |
| } |
| |
| /** |
| * 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 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 SegmentEvent |
| * @see SegmentListener |
| * @see #addSegmentListener |
| * |
| * @since 3.103 |
| */ |
| public void removeSegmentListener (SegmentListener listener) { |
| checkWidget (); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| eventTable.unhook (SWT.Segments, 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; |
| int selected = GTK.gtk_combo_box_get_active (handle); |
| OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED); |
| GTK.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 && selected != index) { |
| /* |
| * 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); |
| } |
| } |
| |
| |
| @Override |
| void setBackgroundGdkRGBA (long /*int*/ context, long /*int*/ handle, GdkRGBA rgba) { |
| assert GTK.GTK3 : "GTK3 code was run by GTK2"; |
| // CSS to be parsed for various widgets within Combo |
| background = rgba; |
| String css = "* {\n"; |
| String color; |
| if (rgba != null) { |
| color = display.gtk_rgba_to_css_string (rgba); |
| } else { |
| if ((style & SWT.READ_ONLY) != 0) { |
| color = display.gtk_rgba_to_css_string (display.COLOR_WIDGET_BACKGROUND_RGBA); |
| } else { |
| color = display.gtk_rgba_to_css_string (display.COLOR_LIST_BACKGROUND_RGBA); |
| } |
| } |
| css += "background: " + color + ";}"; |
| |
| // Cache background color |
| cssBackground = css; |
| String finalCss = display.gtk_css_create_css_color_string (cssBackground, cssForeground, SWT.BACKGROUND); |
| if (entryHandle == 0 || (style & SWT.READ_ONLY) != 0) { |
| // For read only Combos, we can just apply the background CSS to the GtkToggleButton. |
| gtk_css_provider_load_from_css (GTK.gtk_widget_get_style_context(buttonHandle), finalCss); |
| } else { |
| if (GTK.GTK_VERSION >= OS.VERSION(3, 14, 0)) { |
| // For GTK3.14+, only the GtkEntry needs to be themed. |
| gtk_css_provider_load_from_css (GTK.gtk_widget_get_style_context(entryHandle), finalCss); |
| } else { |
| // Maintain GTK3.12- functionality |
| setBackgroundGradientGdkRGBA (GTK.gtk_widget_get_style_context (entryHandle), handle, rgba); |
| super.setBackgroundGdkRGBA (GTK.gtk_widget_get_style_context (entryHandle), entryHandle, rgba); |
| } |
| } |
| // Set the background color of the text of the drop down menu. |
| OS.g_object_set (textRenderer, OS.background_rgba, rgba, 0); |
| } |
| |
| @Override |
| void setBackgroundGdkRGBA (GdkRGBA rgba) { |
| assert GTK.GTK3 : "GTK3 code was run by GTK2"; |
| super.setBackgroundGdkRGBA(rgba); |
| if (entryHandle != 0) setBackgroundGdkRGBA (entryHandle, rgba); |
| setBackgroundGdkRGBA (fixedHandle, rgba); |
| } |
| |
| @Override |
| void setBackgroundGdkColor (GdkColor color) { |
| assert !GTK.GTK3 : "GTK2 code was run by GTK3"; |
| super.setBackgroundGdkColor (color); |
| if (entryHandle != 0) GTK.gtk_widget_modify_base (entryHandle, 0, color); |
| if (cellHandle != 0) OS.g_object_set (cellHandle, OS.background_gdk, color, 0); |
| OS.g_object_set (textRenderer, OS.background_gdk, color, 0); |
| |
| if (entryHandle != 0) setBackgroundGdkColor(entryHandle, color); |
| setBackgroundGdkColor (fixedHandle, color); |
| } |
| |
| @Override |
| int setBounds (int x, int y, int width, int height, boolean move, boolean resize) { |
| int newHeight = height; |
| if (resize) newHeight = Math.max (getTextHeightInPixels (), height); |
| return super.setBounds (x, y, width, newHeight, move, resize); |
| } |
| |
| void setButtonHandle (long /*int*/ widget) { |
| if (buttonHandle == widget) return; |
| if (buttonHandle != 0) { |
| display.removeWidget (buttonHandle); |
| OS.g_object_unref (buttonHandle); |
| } |
| buttonHandle = widget; |
| if (buttonHandle != 0) { |
| OS.g_object_ref (buttonHandle); |
| display.addWidget (buttonHandle, this); |
| hookEvents (new long /*int*/[]{buttonHandle}); |
| } |
| } |
| |
| void setMenuHandle (long /*int*/ widget) { |
| if (menuHandle == widget) return; |
| if (menuHandle != 0) { |
| display.removeWidget (menuHandle); |
| OS.g_object_unref (menuHandle); |
| } |
| menuHandle = widget; |
| if (menuHandle != 0) { |
| OS.g_object_ref (menuHandle); |
| display.addWidget (menuHandle, this); |
| hookEvents (new long /*int*/[]{menuHandle}); |
| } |
| } |
| |
| @Override |
| void setFontDescription (long /*int*/ font) { |
| super.setFontDescription (font); |
| if (entryHandle != 0) setFontDescription (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 = GTK.gtk_combo_box_get_active (handle); |
| OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED); |
| GTK.gtk_combo_box_set_active (handle, -1); |
| GTK.gtk_combo_box_set_active (handle, index); |
| OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, CHANGED); |
| } |
| } |
| |
| @Override |
| void setForegroundGdkColor (GdkColor color) { |
| assert !GTK.GTK3 : "GTK2 code was run by GTK3"; |
| super.setForegroundColor (handle, color, false); |
| if (entryHandle != 0) { |
| setForegroundColor (entryHandle, color, false); |
| } |
| OS.g_object_set (textRenderer, OS.foreground_gdk, color, 0); |
| } |
| |
| @Override |
| void setForegroundGdkRGBA (GdkRGBA rgba) { |
| assert GTK.GTK3 : "GTK3 code was run by GTK2"; |
| if (entryHandle != 0) { |
| setForegroundGdkRGBA (entryHandle, rgba); |
| } |
| OS.g_object_set (textRenderer, OS.foreground_rgba, rgba, 0); |
| super.setForegroundGdkRGBA(rgba); |
| } |
| |
| |
| /** |
| * 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; |
| if (handle != 0) { |
| GTK.gtk_combo_box_text_remove (handle, index); |
| } |
| gtk_combo_box_insert(string, index); |
| |
| if ((style & SWT.RIGHT_TO_LEFT) != 0 && popupHandle != 0) { |
| GTK.gtk_container_forall (popupHandle, display.setDirectionProc, GTK.GTK_TEXT_DIR_RTL); |
| } |
| } |
| |
| /** |
| * 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); |
| clearText (); |
| if (GTK.GTK3) { |
| gtk_combo_box_text_remove_all(); |
| } else { |
| for (int i = count - 1; i >= 0; i--) { |
| if (handle != 0) GTK.gtk_combo_box_text_remove (handle, i); |
| } |
| } |
| for (int i = 0; i < items.length; i++) { |
| String string = items [i]; |
| gtk_combo_box_insert(string, i); |
| if ((style & SWT.RIGHT_TO_LEFT) != 0 && popupHandle != 0) { |
| GTK.gtk_container_forall (popupHandle, display.setDirectionProc, GTK.GTK_TEXT_DIR_RTL); |
| } |
| } |
| } |
| |
| private void gtk_combo_box_text_remove_all() { |
| gtk_combo_box_toggle_wrap(false); |
| if (handle != 0) GTK.gtk_combo_box_text_remove_all(handle); |
| gtk_combo_box_toggle_wrap(true); |
| } |
| |
| /** |
| * 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 (visible) { |
| GTK.gtk_combo_box_popup (handle); |
| } else { |
| GTK.gtk_combo_box_popdown (handle); |
| } |
| } |
| |
| @Override |
| void setOrientation (boolean create) { |
| super.setOrientation (create); |
| if ((style & SWT.RIGHT_TO_LEFT) != 0 || !create) { |
| int dir = (style & SWT.RIGHT_TO_LEFT) != 0 ? GTK.GTK_TEXT_DIR_RTL : GTK.GTK_TEXT_DIR_LTR; |
| if (entryHandle != 0) GTK.gtk_widget_set_direction (entryHandle, dir); |
| if (cellHandle != 0) GTK.gtk_widget_set_direction (cellHandle, dir); |
| if (!create) { |
| if (popupHandle != 0) GTK.gtk_container_forall (popupHandle, display.setDirectionProc, dir); |
| } |
| } |
| } |
| |
| /** |
| * 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 |
| */ |
| @Override |
| public void setOrientation (int orientation) { |
| super.setOrientation (orientation); |
| } |
| |
| /** |
| * 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) { |
| long /*int*/ ptr = GTK.gtk_entry_get_text (entryHandle); |
| int start = (int)/*64*/OS.g_utf16_offset_to_utf8_offset (ptr, selection.x); |
| int end = (int)/*64*/OS.g_utf16_offset_to_utf8_offset (ptr, selection.y); |
| GTK.gtk_editable_set_position (entryHandle, start); |
| GTK.gtk_editable_select_region (entryHandle, start, end); |
| } |
| } |
| |
| /** |
| * 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><p> |
| * Also note, if control characters like '\n', '\t' etc. are used |
| * in the string, then the behavior is platform dependent. |
| * </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; |
| select (index); |
| 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)) { |
| long /*int*/ ptr = GTK.gtk_entry_get_text (entryHandle); |
| string = verifyText (string, 0, (int)/*64*/OS.g_utf16_strlen (ptr, -1)); |
| if (string == null) return; |
| } |
| byte [] buffer = Converter.wcsToMbcs (string, true); |
| 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); |
| GTK.gtk_entry_set_text (entryHandle, buffer); |
| 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) GTK.gtk_entry_set_max_length (entryHandle, limit); |
| } |
| |
| @Override |
| 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; |
| } |
| |
| @Override |
| boolean checkSubwindow () { |
| return false; |
| } |
| |
| @Override |
| boolean translateTraversal (GdkEventKey keyEvent) { |
| int key = keyEvent.keyval; |
| switch (key) { |
| case GDK.GDK_KP_Enter: |
| case GDK.GDK_Return: { |
| long /*int*/ imContext = imContext (); |
| if (imContext != 0) { |
| long /*int*/ [] preeditString = new long /*int*/ [1]; |
| GTK.gtk_im_context_get_preedit_string (imContext, preeditString, null, null); |
| if (preeditString [0] != 0) { |
| int length = C.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; |
| long /*int*/ eventPtr = GTK.gtk_get_current_event (); |
| if (eventPtr != 0) { |
| GdkEventKey gdkEvent = new GdkEventKey (); |
| OS.memmove (gdkEvent, eventPtr, GdkEventKey.sizeof); |
| switch (gdkEvent.type) { |
| case GDK.GDK_KEY_PRESS: |
| setKeyState (event, gdkEvent); |
| break; |
| } |
| GDK.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; |
| } |
| |
| } |