| /******************************************************************************* |
| * Copyright (c) 2000, 2003 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.widgets; |
| |
| |
| import org.eclipse.swt.internal.motif.*; |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.graphics.*; |
| |
| /** |
| * Instances of this class are controls which are capable |
| * of containing other controls. |
| * <dl> |
| * <dt><b>Styles:</b></dt> |
| * <dd>NO_BACKGROUND, NO_FOCUS, NO_MERGE_PAINTS, NO_REDRAW_RESIZE, NO_RADIO_GROUP</dd> |
| * <dt><b>Events:</b></dt> |
| * <dd>(none)</dd> |
| * </dl> |
| * <p> |
| * Note: The <code>NO_BACKGROUND</code>, <code>NO_FOCUS</code>, <code>NO_MERGE_PAINTS</code>, |
| * and <code>NO_REDRAW_RESIZE</code> styles are intended for use with <code>Canvas</code>. |
| * They can be used with <code>Composite</code> if you are drawing your own, but their |
| * behavior is undefined if they are used with subclasses of <code>Composite</code> other |
| * than <code>Canvas</code>. |
| * </p><p> |
| * This class may be subclassed by custom control implementors |
| * who are building controls that are constructed from aggregates |
| * of other controls. |
| * </p> |
| * |
| * @see Canvas |
| */ |
| public class Composite extends Scrollable { |
| Layout layout; |
| int damagedRegion; |
| Control [] tabList; |
| |
| Composite () { |
| /* Do nothing */ |
| } |
| /** |
| * 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 widget which will be the parent of the new instance (cannot be null) |
| * @param style the style of widget 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> |
| * </ul> |
| * |
| * @see SWT#NO_BACKGROUND |
| * @see SWT#NO_FOCUS |
| * @see SWT#NO_MERGE_PAINTS |
| * @see SWT#NO_REDRAW_RESIZE |
| * @see SWT#NO_RADIO_GROUP |
| * @see Widget#getStyle |
| */ |
| public Composite (Composite parent, int style) { |
| super (parent, style); |
| } |
| Control [] _getChildren () { |
| int [] argList = {OS.XmNchildren, 0, OS.XmNnumChildren, 0}; |
| OS.XtGetValues (handle, argList, argList.length / 2); |
| int ptr = argList [1], count = argList [3]; |
| if (count == 0 || ptr == 0) return new Control [0]; |
| int [] handles = new int [count]; |
| OS.memmove (handles, ptr, count * 4); |
| Control [] children = new Control [count]; |
| int i = 0, j = 0; |
| while (i < count) { |
| int handle = handles [i]; |
| if (handle != 0) { |
| Widget widget = WidgetTable.get (handle); |
| if (widget != null && widget != this) { |
| if (widget instanceof Control) { |
| children [j++] = (Control) widget; |
| } |
| } |
| } |
| i++; |
| } |
| if (i == j) return children; |
| Control [] newChildren = new Control [j]; |
| System.arraycopy (children, 0, newChildren, 0, j); |
| return newChildren; |
| } |
| Control [] _getTabList () { |
| if (tabList == null) return tabList; |
| int count = 0; |
| for (int i=0; i<tabList.length; i++) { |
| if (!tabList [i].isDisposed ()) count++; |
| } |
| if (count == tabList.length) return tabList; |
| Control [] newList = new Control [count]; |
| int index = 0; |
| for (int i=0; i<tabList.length; i++) { |
| if (!tabList [i].isDisposed ()) { |
| newList [index++] = tabList [i]; |
| } |
| } |
| tabList = newList; |
| return tabList; |
| } |
| public Point computeSize (int wHint, int hHint, boolean changed) { |
| checkWidget(); |
| Point size; |
| if (layout != null) { |
| if ((wHint == SWT.DEFAULT) || (hHint == SWT.DEFAULT)) { |
| size = layout.computeSize (this, wHint, hHint, changed); |
| } else { |
| size = new Point (wHint, hHint); |
| } |
| } else { |
| size = minimumSize (); |
| } |
| if (size.x == 0) size.x = DEFAULT_WIDTH; |
| if (size.y == 0) size.y = DEFAULT_HEIGHT; |
| if (wHint != SWT.DEFAULT) size.x = wHint; |
| if (hHint != SWT.DEFAULT) size.y = hHint; |
| Rectangle trim = computeTrim (0, 0, size.x, size.y); |
| return new Point (trim.width, trim.height); |
| } |
| Control [] computeTabList () { |
| Control result [] = super.computeTabList (); |
| if (result.length == 0) return result; |
| Control [] list = tabList != null ? _getTabList () : _getChildren (); |
| for (int i=0; i<list.length; i++) { |
| Control child = list [i]; |
| Control [] childList = child.computeTabList (); |
| if (childList.length != 0) { |
| Control [] newResult = new Control [result.length + childList.length]; |
| System.arraycopy (result, 0, newResult, 0, result.length); |
| System.arraycopy (childList, 0, newResult, result.length, childList.length); |
| result = newResult; |
| } |
| } |
| return result; |
| } |
| protected void checkSubclass () { |
| /* Do nothing - Subclassing is allowed */ |
| } |
| void createHandle (int index) { |
| state |= HANDLE | CANVAS; |
| int parentHandle = parent.handle; |
| if ((style & (SWT.H_SCROLL | SWT.V_SCROLL)) == 0) { |
| int border = (style & SWT.BORDER) != 0 ? 1 : 0; |
| int [] argList = { |
| OS.XmNancestorSensitive, 1, |
| OS.XmNborderWidth, border, |
| OS.XmNmarginWidth, 0, |
| OS.XmNmarginHeight, 0, |
| OS.XmNresizePolicy, OS.XmRESIZE_NONE, |
| OS.XmNtraversalOn, (style & SWT.NO_FOCUS) != 0 ? 0 : 1, |
| }; |
| handle = OS.XmCreateDrawingArea (parentHandle, null, argList, argList.length / 2); |
| if (handle == 0) error (SWT.ERROR_NO_HANDLES); |
| } else { |
| createScrolledHandle (parentHandle); |
| } |
| } |
| void createScrolledHandle (int topHandle) { |
| int [] argList = {OS.XmNancestorSensitive, 1}; |
| scrolledHandle = OS.XmCreateMainWindow (topHandle, null, argList, argList.length / 2); |
| if (scrolledHandle == 0) error (SWT.ERROR_NO_HANDLES); |
| if ((style & (SWT.H_SCROLL | SWT.V_SCROLL)) != 0) { |
| Display display = getDisplay (); |
| int thickness = display.buttonShadowThickness; |
| int [] argList1 = { |
| OS.XmNmarginWidth, 3, |
| OS.XmNmarginHeight, 3, |
| OS.XmNresizePolicy, OS.XmRESIZE_NONE, |
| OS.XmNshadowType, OS.XmSHADOW_IN, |
| OS.XmNshadowThickness, thickness, |
| }; |
| formHandle = OS.XmCreateForm (scrolledHandle, null, argList1, argList1.length / 2); |
| if (formHandle == 0) error (SWT.ERROR_NO_HANDLES); |
| int [] argList2 = { |
| OS.XmNtopAttachment, OS.XmATTACH_FORM, |
| OS.XmNbottomAttachment, OS.XmATTACH_FORM, |
| OS.XmNleftAttachment, OS.XmATTACH_FORM, |
| OS.XmNrightAttachment, OS.XmATTACH_FORM, |
| OS.XmNresizable, 0, |
| OS.XmNmarginWidth, 0, |
| OS.XmNmarginHeight, 0, |
| OS.XmNresizePolicy, OS.XmRESIZE_NONE, |
| }; |
| handle = OS.XmCreateDrawingArea (formHandle, null, argList2, argList2.length / 2); |
| } else { |
| int [] argList3 = { |
| OS.XmNmarginWidth, 0, |
| OS.XmNmarginHeight, 0, |
| OS.XmNresizePolicy, OS.XmRESIZE_NONE, |
| OS.XmNtraversalOn, (style & SWT.NO_FOCUS) != 0 ? 0 : 1, |
| }; |
| handle = OS.XmCreateDrawingArea (scrolledHandle, null, argList3, argList3.length / 2); |
| } |
| if (handle == 0) error (SWT.ERROR_NO_HANDLES); |
| } |
| int defaultBackground () { |
| return getDisplay ().compositeBackground; |
| } |
| int defaultForeground () { |
| return getDisplay ().compositeForeground; |
| } |
| public boolean forceFocus () { |
| checkWidget(); |
| /* |
| * Bug in Motif. When XtDestroyWidget() is called from |
| * within a FocusOut event handler, Motif GP's. The fix |
| * is to post focus events and run them when the handler |
| * has returned. |
| */ |
| Display display = getDisplay (); |
| boolean oldFocusOut = display.postFocusOut; |
| Control [] children = _getChildren (); |
| int [] traversals = new int [children.length]; |
| int [] argList = new int [] {OS.XmNtraversalOn, 0}; |
| for (int i=0; i<children.length; i++) { |
| int childHandle = children [i].topHandle (); |
| OS.XtGetValues (childHandle, argList, argList.length / 2); |
| if ((traversals [i] = argList [1]) != 0) { |
| argList [1] = 0; |
| display.postFocusOut = true; |
| OS.XtSetValues (childHandle, argList, argList.length / 2); |
| } |
| } |
| boolean result = super.forceFocus (); |
| for (int i=0; i<children.length; i++) { |
| argList [1] = traversals [i]; |
| Control control = children [i]; |
| if (!control.isDisposed ()) { |
| int childHandle = control.topHandle (); |
| OS.XtSetValues (childHandle, argList, argList.length / 2); |
| if (argList [1] != 0) control.overrideTranslations (); |
| } |
| } |
| display.postFocusOut = oldFocusOut; |
| if (!display.postFocusOut) display.runFocusOutEvents (); |
| return result; |
| } |
| /** |
| * Returns an array containing the receiver's children. |
| * <p> |
| * Note: This is not the actual structure used by the receiver |
| * to maintain its list of children, so modifying the array will |
| * not affect the receiver. |
| * </p> |
| * |
| * @return an array of children |
| * |
| * @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 Control [] getChildren () { |
| checkWidget(); |
| return _getChildren (); |
| } |
| int getChildrenCount () { |
| /* |
| * NOTE: The current implementation will count |
| * non-registered children. |
| * */ |
| int [] argList = {OS.XmNnumChildren, 0}; |
| OS.XtGetValues (handle, argList, argList.length / 2); |
| return argList [1]; |
| } |
| /** |
| * Returns layout which is associated with the receiver, or |
| * null if one has not been set. |
| * |
| * @return the receiver's layout or null |
| * |
| * @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 Layout getLayout () { |
| checkWidget(); |
| return layout; |
| } |
| /** |
| * Gets the last specified tabbing order for the control. |
| * |
| * @return tabList the ordered list of controls representing the tab order |
| * |
| * @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 #setTabList |
| */ |
| public Control [] getTabList () { |
| checkWidget (); |
| Control [] tabList = _getTabList (); |
| if (tabList == null) { |
| int count = 0; |
| Control [] list =_getChildren (); |
| for (int i=0; i<list.length; i++) { |
| if (list [i].isTabGroup ()) count++; |
| } |
| tabList = new Control [count]; |
| int index = 0; |
| for (int i=0; i<list.length; i++) { |
| if (list [i].isTabGroup ()) { |
| tabList [index++] = list [i]; |
| } |
| } |
| } |
| return tabList; |
| } |
| void hookEvents () { |
| super.hookEvents (); |
| if ((state & CANVAS) != 0) { |
| int windowProc = getDisplay ().windowProc; |
| OS.XtInsertEventHandler (handle, 0, true, windowProc, NON_MASKABLE, OS.XtListTail); |
| } |
| } |
| |
| boolean hooksKeys () { |
| return hooks (SWT.KeyDown) || hooks (SWT.KeyUp); |
| } |
| |
| /** |
| * If the receiver has a layout, asks the layout to <em>lay out</em> |
| * (that is, set the size and location of) the receiver's children. |
| * If the receiver does not have a layout, do nothing. |
| * <p> |
| * This is equivalent to calling <code>layout(true)</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> |
| */ |
| public void layout () { |
| checkWidget(); |
| layout (true); |
| } |
| /** |
| * If the receiver has a layout, asks the layout to <em>lay out</em> |
| * (that is, set the size and location of) the receiver's children. |
| * If the the argument is <code>true</code> the layout must not rely |
| * on any cached information it is keeping about the children. If it |
| * is <code>false</code> the layout may (potentially) simplify the |
| * work it is doing by assuming that the state of the none of the |
| * receiver's children has changed since the last layout. |
| * If the receiver does not have a layout, do nothing. |
| * |
| * @param changed <code>true</code> if the layout must flush its caches, and <code>false</code> otherwise |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public void layout (boolean changed) { |
| checkWidget(); |
| if (layout == null) return; |
| int count = getChildrenCount (); |
| if (count == 0) return; |
| layout.layout (this, changed); |
| } |
| Point minimumSize () { |
| Control [] children = _getChildren (); |
| int width = 0, height = 0; |
| for (int i=0; i<children.length; i++) { |
| Rectangle rect = children [i].getBounds (); |
| width = Math.max (width, rect.x + rect.width); |
| height = Math.max (height, rect.y + rect.height); |
| } |
| return new Point (width, height); |
| } |
| void moveAbove (int handle1, int handle2) { |
| if (handle1 == handle2) return; |
| int [] argList = {OS.XmNchildren, 0, OS.XmNnumChildren, 0}; |
| OS.XtGetValues (handle, argList, argList.length / 2); |
| int ptr = argList [1], count = argList [3]; |
| if (count == 0 || ptr == 0) return; |
| int [] handles = new int [count]; |
| OS.memmove (handles, ptr, count * 4); |
| if (handle2 == 0) handle2 = handles [0]; |
| int i = 0, index1 = -1, index2 = -1; |
| while (i < count) { |
| int handle = handles [i]; |
| if (handle == handle1) index1 = i; |
| if (handle == handle2) index2 = i; |
| if (index1 != -1 && index2 != -1) break; |
| i++; |
| } |
| if (index1 == -1 || index2 == -1) return; |
| if (index1 == index2) return; |
| if (index1 < index2) { |
| System.arraycopy (handles, index1 + 1, handles, index1, index2 - index1 - 1); |
| handles [index2 - 1] = handle1; |
| } else { |
| System.arraycopy (handles, index2, handles, index2 + 1, index1 - index2); |
| handles [index2] = handle1; |
| } |
| OS.memmove (ptr, handles, count * 4); |
| } |
| void moveBelow (int handle1, int handle2) { |
| if (handle1 == handle2) return; |
| int [] argList = {OS.XmNchildren, 0, OS.XmNnumChildren, 0}; |
| OS.XtGetValues (handle, argList, argList.length / 2); |
| int ptr = argList [1], count = argList [3]; |
| if (count == 0 || ptr == 0) return; |
| int [] handles = new int [count]; |
| OS.memmove (handles, ptr, count * 4); |
| if (handle2 == 0) handle2 = handles [count - 1]; |
| int i = 0, index1 = -1, index2 = -1; |
| while (i < count) { |
| int handle = handles [i]; |
| if (handle == handle1) index1 = i; |
| if (handle == handle2) index2 = i; |
| if (index1 != -1 && index2 != -1) break; |
| i++; |
| } |
| if (index1 == -1 || index2 == -1) return; |
| if (index1 == index2) return; |
| if (index1 < index2) { |
| System.arraycopy (handles, index1 + 1, handles, index1, index2 - index1); |
| handles [index2] = handle1; |
| } else { |
| System.arraycopy (handles, index2 + 1, handles, index2 + 2, index1 - index2 - 1); |
| handles [index2 + 1] = handle1; |
| } |
| OS.memmove (ptr, handles, count * 4); |
| } |
| void propagateChildren (boolean enabled) { |
| super.propagateChildren (enabled); |
| Control [] children = _getChildren (); |
| for (int i = 0; i < children.length; i++) { |
| Control child = children [i]; |
| if (child.getEnabled ()) { |
| child.propagateChildren (enabled); |
| } |
| } |
| } |
| void realizeChildren () { |
| super.realizeChildren (); |
| Control [] children = _getChildren (); |
| for (int i=0; i<children.length; i++) { |
| children [i].realizeChildren (); |
| } |
| if ((state & CANVAS) != 0) { |
| if ((style & SWT.NO_BACKGROUND) == 0 && (style & SWT.NO_REDRAW_RESIZE) != 0) return; |
| int xDisplay = OS.XtDisplay (handle); |
| if (xDisplay == 0) return; |
| int xWindow = OS.XtWindow (handle); |
| if (xWindow == 0) return; |
| int flags = 0; |
| XSetWindowAttributes attributes = new XSetWindowAttributes (); |
| if ((style & SWT.NO_BACKGROUND) != 0) { |
| flags |= OS.CWBackPixmap; |
| attributes.background_pixmap = OS.None; |
| } |
| if ((style & SWT.NO_REDRAW_RESIZE) == 0) { |
| flags |= OS.CWBitGravity; |
| attributes.bit_gravity = OS.ForgetGravity; |
| } |
| if (flags != 0) { |
| OS.XChangeWindowAttributes (xDisplay, xWindow, flags, attributes); |
| } |
| } |
| } |
| void redrawWidget (int x, int y, int width, int height, boolean all) { |
| super.redrawWidget (x, y, width, height, all); |
| if (!all) return; |
| Control [] children = _getChildren (); |
| for (int i = 0; i < children.length; i++) { |
| Control child = children [i]; |
| Point location = child.getClientLocation (); |
| child.redrawWidget (x - location.x, y - location.y, width, height, all); |
| } |
| } |
| void releaseChildren () { |
| Control [] children = _getChildren (); |
| for (int i=0; i<children.length; i++) { |
| Control child = children [i]; |
| if (!child.isDisposed ()) child.releaseResources (); |
| } |
| } |
| void releaseWidget () { |
| releaseChildren (); |
| super.releaseWidget (); |
| layout = null; |
| tabList = null; |
| if (damagedRegion != 0) OS.XDestroyRegion (damagedRegion); |
| damagedRegion = 0; |
| } |
| void setBackgroundPixel (int pixel) { |
| super.setBackgroundPixel (pixel); |
| if ((state & CANVAS) != 0) { |
| if ((style & SWT.NO_BACKGROUND) != 0) { |
| int xDisplay = OS.XtDisplay (handle); |
| if (xDisplay == 0) return; |
| int xWindow = OS.XtWindow (handle); |
| if (xWindow == 0) return; |
| XSetWindowAttributes attributes = new XSetWindowAttributes (); |
| attributes.background_pixmap = OS.None; |
| OS.XChangeWindowAttributes (xDisplay, xWindow, OS.CWBackPixmap, attributes); |
| } |
| } |
| } |
| boolean setBounds (int x, int y, int width, int height, boolean move, boolean resize) { |
| boolean changed = super.setBounds (x, y, width, height, move, resize); |
| if (changed && resize && layout != null) layout.layout (this, false); |
| return changed; |
| } |
| public boolean setFocus () { |
| checkWidget (); |
| if ((style & SWT.NO_FOCUS) != 0) return false; |
| Control [] children = _getChildren (); |
| for (int i=0; i<children.length; i++) { |
| Control child = children [i]; |
| if (child.setFocus ()) return true; |
| } |
| return forceFocus (); |
| } |
| /** |
| * Sets the layout which is associated with the receiver to be |
| * the argument which may be null. |
| * |
| * @param layout the receiver's new layout or null |
| * |
| * @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 setLayout (Layout layout) { |
| checkWidget(); |
| this.layout = layout; |
| } |
| /** |
| * Sets the tabbing order for the specified controls to |
| * match the order that they occur in the argument list. |
| * |
| * @param tabList the ordered list of controls representing the tab order or null |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if a widget in the tabList is null or has been disposed</li> |
| * <li>ERROR_INVALID_PARENT - if widget in the tabList is not in the same widget tree</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 setTabList (Control [] tabList) { |
| checkWidget (); |
| if (tabList != null) { |
| for (int i=0; i<tabList.length; i++) { |
| Control control = tabList [i]; |
| if (control == null) error (SWT.ERROR_INVALID_ARGUMENT); |
| if (control.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT); |
| /* |
| * This code is intentionally commented. |
| * Tab lists are currently only supported |
| * for the direct children of a composite. |
| */ |
| // Shell shell = control.getShell (); |
| // while (control != shell && control != this) { |
| // control = control.parent; |
| // } |
| // if (control != this) error (SWT.ERROR_INVALID_PARENT); |
| if (control.parent != this) error (SWT.ERROR_INVALID_PARENT); |
| } |
| Control [] newList = new Control [tabList.length]; |
| System.arraycopy (tabList, 0, newList, 0, tabList.length); |
| tabList = newList; |
| } |
| this.tabList = tabList; |
| } |
| boolean setTabGroupFocus () { |
| if (isTabItem ()) return setTabItemFocus (); |
| if ((style & SWT.NO_FOCUS) == 0) { |
| boolean takeFocus = true; |
| if ((state & CANVAS) != 0) takeFocus = hooksKeys (); |
| if (takeFocus && setTabItemFocus ()) return true; |
| } |
| Control [] children = _getChildren (); |
| for (int i=0; i<children.length; i++) { |
| Control child = children [i]; |
| if (child.isTabItem () && child.setTabItemFocus ()) return true; |
| } |
| return false; |
| } |
| boolean setTabItemFocus () { |
| if ((style & SWT.NO_FOCUS) == 0) { |
| boolean takeFocus = true; |
| if ((state & CANVAS) != 0) takeFocus = hooksKeys (); |
| if (takeFocus) { |
| if (!isShowing ()) return false; |
| if (forceFocus ()) return true; |
| } |
| } |
| return super.setTabItemFocus (); |
| } |
| void setScrollbarVisible (int barHandle, boolean visible) { |
| /* |
| * Bug in Motif. When XtDestroyWidget() is called from |
| * within a FocusOut event handler, Motif GP's. The fix |
| * is to post focus events and run them when the handler |
| * has returned. |
| */ |
| Display display = getDisplay (); |
| boolean oldFocusOut = display.postFocusOut; |
| Control [] children = _getChildren (); |
| int [] traversals = new int [children.length]; |
| int [] argList = new int [] {OS.XmNtraversalOn, 0}; |
| for (int i=0; i<children.length; i++) { |
| int childHandle = children [i].topHandle (); |
| OS.XtGetValues (childHandle, argList, argList.length / 2); |
| if ((traversals [i] = argList [1]) != 0) { |
| argList [1] = 0; |
| display.postFocusOut = true; |
| OS.XtSetValues (children [i].handle, argList, argList.length / 2); |
| } |
| } |
| super.setScrollbarVisible(barHandle, visible); |
| for (int i=0; i<children.length; i++) { |
| argList [1] = traversals [i]; |
| Control control = children [i]; |
| if (!control.isDisposed ()) { |
| int childHandle = control.topHandle (); |
| OS.XtSetValues (childHandle, argList, argList.length / 2); |
| if (argList [1] != 0) control.overrideTranslations (); |
| } |
| } |
| display.postFocusOut = oldFocusOut; |
| if (!display.postFocusOut) display.runFocusOutEvents (); |
| } |
| int traversalCode (int key, XKeyEvent xEvent) { |
| if ((state & CANVAS) != 0) { |
| if ((style & SWT.NO_FOCUS) != 0) return 0; |
| if (hooksKeys ()) return 0; |
| } |
| return super.traversalCode (key, xEvent); |
| } |
| boolean translateMnemonic (char key, XKeyEvent xEvent) { |
| if (super.translateMnemonic (key, xEvent)) return true; |
| Control [] children = _getChildren (); |
| for (int i=0; i<children.length; i++) { |
| Control child = children [i]; |
| if (child.translateMnemonic (key, xEvent)) return true; |
| } |
| return false; |
| } |
| int XExposure (int w, int client_data, int call_data, int continue_to_dispatch) { |
| if ((state & CANVAS) == 0) { |
| return super.XExposure (w, client_data, call_data, continue_to_dispatch); |
| } |
| if (!hooks (SWT.Paint) && !filters (SWT.Paint)) return 0; |
| if ((style & SWT.NO_MERGE_PAINTS) != 0) { |
| return super.XExposure (w, client_data, call_data, continue_to_dispatch); |
| } |
| XExposeEvent xEvent = new XExposeEvent (); |
| OS.memmove (xEvent, call_data, XExposeEvent.sizeof); |
| int exposeCount = xEvent.count; |
| if (exposeCount == 0) { |
| if (OS.XEventsQueued (xEvent.display, OS.QueuedAfterReading) != 0) { |
| XAnyEvent xAnyEvent = new XAnyEvent (); |
| Display display = getDisplay (); |
| display.exposeCount = display.lastExpose = 0; |
| int checkExposeProc = display.checkExposeProc; |
| OS.XCheckIfEvent (xEvent.display, xAnyEvent, checkExposeProc, xEvent.window); |
| exposeCount = display.exposeCount; |
| int lastExpose = display.lastExpose; |
| if (exposeCount != 0 && lastExpose != 0) { |
| XExposeEvent xExposeEvent = display.xExposeEvent; |
| OS.memmove (xExposeEvent, lastExpose, XExposeEvent.sizeof); |
| xExposeEvent.count = 0; |
| OS.memmove (lastExpose, xExposeEvent, XExposeEvent.sizeof); |
| } |
| } |
| } |
| if (exposeCount == 0 && damagedRegion == 0) { |
| return super.XExposure (w, client_data, call_data, continue_to_dispatch); |
| } |
| if (damagedRegion == 0) damagedRegion = OS.XCreateRegion (); |
| OS.XtAddExposureToRegion (call_data, damagedRegion); |
| if (exposeCount != 0) return 0; |
| int xDisplay = OS.XtDisplay (handle); |
| if (xDisplay == 0) return 0; |
| Event event = new Event (); |
| GC gc = event.gc = new GC (this); |
| Region region = Region.motif_new (damagedRegion); |
| gc.setClipping (region); |
| XRectangle rect = new XRectangle (); |
| OS.XClipBox (damagedRegion, rect); |
| event.x = rect.x; event.y = rect.y; |
| event.width = rect.width; event.height = rect.height; |
| sendEvent (SWT.Paint, event); |
| gc.dispose (); |
| event.gc = null; |
| OS.XDestroyRegion (damagedRegion); |
| damagedRegion = 0; |
| return 0; |
| } |
| int XNonMaskable (int w, int client_data, int call_data, int continue_to_dispatch) { |
| if ((state & CANVAS) != 0) { |
| XExposeEvent xEvent = new XExposeEvent (); |
| OS.memmove (xEvent, call_data, XExposeEvent.sizeof); |
| if (xEvent.type == OS.GraphicsExpose) return XExposure (w, client_data, call_data, continue_to_dispatch); |
| } |
| return 0; |
| } |
| } |