--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/javauis/eswt_qt/org.eclipse.swt/Eclipse SWT/qt/org/eclipse/swt/widgets/Composite.java Mon May 03 12:27:20 2010 +0300
@@ -0,0 +1,736 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2007 IBM Corporation and others.
+ * Portion Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
+ * 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
+ * Nokia Corporation - Qt implementation
+ *******************************************************************************/
+package org.eclipse.swt.widgets;
+
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.graphics.Point;
+import org.eclipse.swt.graphics.Rectangle;
+import org.eclipse.swt.internal.qt.OS;
+import org.eclipse.swt.internal.qt.WidgetConstant;
+import org.eclipse.swt.internal.qt.WidgetState;
+
+/**
+ * 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;
+ Control[] tabList;
+ int layoutCount;
+ int backgroundMode;
+
+/**
+ * Prevents uninitialized instances from being created outside the package.
+ */
+Composite () {
+}
+
+/**
+ * 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);
+}
+
+/**
+ * <p>
+ * <b>IMPORTANT:</b> This constructor is <em>not</em> part of the SWT
+ * public API. It should never be referenced from application code.
+ * </p>
+ */
+protected Composite(Composite parent, int style, int extraStyle, Object packageProxy,
+ boolean isExtended) {
+ super(parent, style, extraStyle, packageProxy, isExtended);
+}
+
+void addControl_pp (Control control) {
+}
+
+void checkBuffered () {
+ if ((state & WidgetState.CANVAS) == 0) {
+ super.checkBuffered ();
+ }
+}
+
+void checkNoBackground() {
+ if((style & SWT.NO_BACKGROUND) != 0) {
+ if(handle != 0) {
+ OS.QWidget_setAttribute(handle, OS.QT_WA_NOSYSTEMBACKGROUND, true);
+ }
+ }
+}
+
+void checkNoFocus() {
+ if((style & SWT.NO_FOCUS) != 0) {
+ OS.QWidget_setFocusPolicy(handle, OS.QT_FOCUSPOLICY_NOFOCUS);
+ int topHandle;
+ if((topHandle = this.topHandle) != handle) {
+ OS.QWidget_setFocusPolicy(topHandle, OS.QT_FOCUSPOLICY_NOFOCUS);
+ }
+ }
+}
+
+void checkNoRedrawResize() {
+ if((style & SWT.NO_REDRAW_RESIZE) != 0) {
+ if(handle != 0) {
+ OS.QWidget_setAttribute(handle, OS.QT_WA_STATICCONTENTS, true);
+ }
+ }
+}
+
+protected void checkSubclass () {
+ /* Do nothing - Subclassing is allowed */
+}
+
+public Point computeSize (int wHint, int hHint, boolean changed) {
+ checkWidget ();
+
+ if ((state & WidgetState.CANVAS) != 0) {
+ Point size;
+ if (layout != null) {
+ if (wHint == SWT.DEFAULT || hHint == SWT.DEFAULT) {
+ changed |= (state & WidgetState.LAYOUT_CHANGED) != 0;
+ state &= ~WidgetState.LAYOUT_CHANGED;
+ size = layout.computeSize (this, wHint, hHint, changed);
+ } else {
+ size = new Point (wHint, hHint);
+ }
+ } else {
+ size = minimumSize (wHint, hHint, changed);
+ }
+ if (size.x == 0) size.x = WidgetConstant.DEFAULT_WIDTH;
+ if (size.y == 0) size.y = WidgetConstant.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);
+ } else {
+ // If this is not a stand-alone Composite, Shell or Canvas,
+ // call Scrollable's implementation
+ return super.computeSize(wHint, hHint, changed);
+ }
+}
+
+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;
+}
+
+void createHandle_pp (int index) {
+ super.createHandle_pp (index);
+ frameHandle = topHandle = scrollAreaHandle = OS.QScrollArea_new(0);
+ handle = OS.QAbstractScrollArea_viewPort(scrollAreaHandle);
+
+ // Composite by itself must not by default accept focus by clicking.
+ int policy = OS.QWidget_focusPolicy(topHandle) & ~OS.QT_FOCUSPOLICY_CLICKFOCUS;
+ OS.QWidget_setFocusPolicy(topHandle, policy);
+
+ // Stand-alone Composites, Shells, Canvases set the CANVAS flag
+ state |= (WidgetState.HANDLE | WidgetState.CANVAS);
+}
+
+boolean doHandleMouseEvent(int type, int widgetHandle, int button, int x, int y, int state, int buttons) {
+ boolean cancel = super.doHandleMouseEvent(type, widgetHandle, button, x, y, state, buttons);
+ if((this.state & WidgetState.CANVAS) != 0) {
+ // From the CANVAS flag it's known if this is a Shell/stand-alone
+ // Composite/Canvas. Those don't process the native mouse event but let it
+ // through to the widget below. If the widget below also passes the event
+ // to this Java widget then it will be getting multiple events. To avoid this
+ // the native event must be canceled.
+ // Note: Also WA_NoMousePropagation could be used for this.
+ cancel = true;
+
+ // Set focus for a canvas with no children
+ if(type == SWT.MouseDown) {
+ if ((style & SWT.NO_FOCUS) == 0 && hooksKeys ()) {
+ Control[] children = getChildren();
+ if (children == null || children.length == 0) {
+ setFocus (OS.QT_OTHERFOCUSREASON);
+ }
+ }
+ }
+ }
+ return cancel;
+}
+
+Composite findDeferredControl () {
+ return layoutCount > 0 ? this : parent.findDeferredControl ();
+}
+
+Menu [] findMenus (Control control) {
+ if (control == this) return new Menu [0];
+ Menu result [] = super.findMenus (control);
+ Control [] children = _getChildren ();
+ for (int i=0; i<children.length; i++) {
+ Control child = children [i];
+ Menu [] menuList = child.findMenus (control);
+ if (menuList.length != 0) {
+ Menu [] newResult = new Menu [result.length + menuList.length];
+ System.arraycopy (result, 0, newResult, 0, result.length);
+ System.arraycopy (menuList, 0, newResult, result.length, menuList.length);
+ result = newResult;
+ }
+ }
+ return result;
+}
+
+void fixTabList (Control control) {
+ if (tabList == null) return;
+ int count = 0;
+ for (int i=0; i<tabList.length; i++) {
+ if (tabList [i] == control) count++;
+ }
+ if (count == 0) return;
+ Control [] newList = null;
+ int length = tabList.length - count;
+ if (length != 0) {
+ newList = new Control [length];
+ int index = 0;
+ for (int i=0; i<tabList.length; i++) {
+ if (tabList [i] != control) {
+ newList [index++] = tabList [i];
+ }
+ }
+ }
+ tabList = newList;
+}
+
+/**
+ * Returns the receiver's background drawing mode. This
+ * will be one of the following constants defined in class
+ * <code>SWT</code>:
+ * <code>INHERIT_NONE</code>, <code>INHERIT_DEFAULT</code>,
+ * <code>INHERTIT_FORCE</code>.
+ *
+ * @return the background mode
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ *
+ * @see SWT
+ *
+ * @since 3.2
+ */
+public int getBackgroundMode () {
+ checkWidget ();
+ return backgroundMode;
+}
+
+/**
+ * Returns a (possibly empty) array containing the receiver's children.
+ * Children are returned in the order that they are drawn. The topmost
+ * control appears at the beginning of the array. Subsequent controls
+ * draw beneath this control and appear later in the array.
+ * <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
+ *
+ * @see Control#moveAbove
+ * @see Control#moveBelow
+ *
+ * @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 ();
+}
+
+Control [] _getChildren() {
+
+ // For some reason MultiPageDialog's children are not children of the handle
+ int widgetHandle = packageProxy != null ? packageProxy.handleWithChildren() : handleWithChildren_pp();
+
+ int[] list = OS.QObject_children(widgetHandle);
+ int count = list.length;
+ if (count == 0) return new Control [0];
+ Control [] children = new Control [count];
+ int childControls = 0;
+ for(int i = 0; i < count; ++i) {
+ int handle = list[i];
+ if (handle != 0) {
+ Widget widget = display.getWidget (handle);
+ if (widget != null && widget != this) {
+ if (widget instanceof Control && !(widget instanceof Shell)) {
+ children [childControls++] = (Control) widget;
+ }
+ }
+ }
+ }
+ if (childControls == count) return children;
+ Control [] newChildren = new Control [childControls];
+ System.arraycopy (children, 0, newChildren, 0, childControls);
+ return newChildren;
+}
+
+/**
+ * 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 (possibly empty) 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;
+}
+
+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;
+}
+
+/*
+ * This method is here because MultiPageDialog for some reason has a Composite
+ * which has its children not as children of the handle. It overrides this.
+ */
+int handleWithChildren_pp() {
+ return handle; // handle == viewport
+}
+
+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>
+ * <p>
+ * Note: Layout is different from painting. If a child is
+ * moved or resized such that an area in the parent is
+ * exposed, then the parent will paint. If no child is
+ * affected, the parent will not paint.
+ * </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 argument is <code>true</code> the layout must not rely
+ * on any information it has cached about the immediate children. If it
+ * is <code>false</code> the layout may (potentially) optimize the
+ * work it is doing by assuming that none of the receiver's
+ * children has changed state since the last layout.
+ * If the receiver does not have a layout, do nothing.
+ * <p>
+ * If a child is resized as a result of a call to layout, the
+ * resize event will invoke the layout of the child. The layout
+ * will cascade down through all child widgets in the receiver's widget
+ * tree until a child is encountered that does not resize. Note that
+ * a layout due to a resize will not flush any cached information
+ * (same as <code>layout(false)</code>).
+ * </p>
+ * <p>
+ * Note: Layout is different from painting. If a child is
+ * moved or resized such that an area in the parent is
+ * exposed, then the parent will paint. If no child is
+ * affected, the parent will not paint.
+ * </p>
+ *
+ * @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;
+ layout (changed, false);
+}
+
+void layout (boolean changed, boolean all) {
+ checkWidget ();
+ if (layout == null && !all) return;
+ markLayout (changed, all);
+ updateLayout (all);
+}
+
+void markLayout (boolean changed, boolean all) {
+ if (layout != null) {
+ state |= WidgetState.LAYOUT_NEEDED;
+ if (changed) state |= WidgetState.LAYOUT_CHANGED;
+ }
+ if (all) {
+ Control [] children = _getChildren ();
+ for (int i=0; i<children.length; i++) {
+ children [i].markLayout (changed, all);
+ }
+ }
+}
+
+Point minimumSize (int wHint, int hHint, boolean changed) {
+ 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 qt_swt_event_widgetResized_pp(int widgetHandle, int oldWidth, int oldHeight, int width, int height) {
+ if (isDisposed ()) return;
+ if((widgetHandle == handle) && isMirrored()) {
+ // In real coordinate system the children need to be moved so that they
+ // appear stationary in the emulated mirrored coordinate system.
+ final int dx = width - oldWidth;
+ if(dx != 0) {
+ Control[] children =_getChildren();
+ try {
+ display.blockedQtEventType = OS.QSWTEVENT_WIDGETMOVED;
+ for (int i = 0; i < children.length; ++i) {
+ Control child = children[i];
+ if (!child.isDisposed()) {
+ final int childHandle = child.topHandle;
+ Point pos = OS.QWidget_pos(childHandle);
+ OS.QWidget_move(childHandle, pos.x + dx, pos.y);
+ }
+ }
+ } finally {
+ display.blockedQtEventType = OS.QEVENT_NONE;
+ }
+ }
+ }
+ super.qt_swt_event_widgetResized_pp(widgetHandle, oldWidth, oldHeight, width, height);
+ if (layout != null) {
+ markLayout (false, false);
+ updateLayout (false);
+ }
+}
+
+void redrawChildren () {
+ super.redrawChildren ();
+ Control [] children = _getChildren ();
+ for (int i = 0; i < children.length; i++) {
+ Control child = children [i];
+ if ((child.state & WidgetState.PARENT_BACKGROUND) != 0) {
+ child.redraw();
+ child.redrawChildren ();
+ }
+ }
+}
+
+void releaseChildren_pp (boolean destroy) {
+ Control [] children = _getChildren ();
+ for (int i=0; i<children.length; i++) {
+ Control child = children [i];
+ if (child != null && !child.isDisposed ()) {
+ child.release (false);
+ }
+ }
+ super.releaseChildren_pp (destroy);
+}
+
+void releaseWidget_pp () {
+ super.releaseWidget_pp ();
+ layout = null;
+ tabList = null;
+}
+
+void removeControl_pp (Control control) {
+ fixTabList (control);
+}
+
+/**
+ * Sets the background drawing mode to the argument which should
+ * be one of the following constants defined in class <code>SWT</code>:
+ * <code>INHERIT_NONE</code>, <code>INHERIT_DEFAULT</code>,
+ * <code>INHERIT_FORCE</code>.
+ *
+ * @param mode the new background mode
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ *
+ * @see SWT
+ *
+ * @since 3.2
+ */
+public void setBackgroundMode (int mode) {
+ checkWidget();
+ backgroundMode = mode;
+ Control [] children = _getChildren ();
+ for (int i = 0; i < children.length; i++) {
+ children [i].updateBackgroundMode ();
+ }
+}
+
+int setBounds (int x, int y, int width, int height, boolean move, boolean resize) {
+ int result = super.setBounds (x, y, width, height, move, resize);
+ if ((result & WidgetState.RESIZED) != 0 && layout != null) {
+ markLayout (false, false);
+ updateLayout (false);
+ }
+ return result;
+}
+
+public boolean setFocus () {
+ checkWidget();
+ return setFocus(OS.QT_OTHERFOCUSREASON);
+}
+
+// Given focus reason affects if the tabbing focus highlight is drawn.
+// For QT_TABFOCUSREASON it is drawn. For QT_OTHERFOCUSREASON it's not.
+boolean setFocus (int focusReason) {
+ Control [] children = _getChildren ();
+ for (int i=0; i<children.length; i++) {
+ Control child = children [i];
+ if (child.getVisible () && child.setFocus (focusReason)) return true;
+ }
+ return super.setFocus (focusReason);
+}
+
+/**
+ * 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;
+}
+
+boolean setTabGroupFocus_pp () {
+ if (isTabItem ()) return setTabItemFocus ();
+ boolean takeFocus = (style & SWT.NO_FOCUS) == 0;
+
+ // Canvas is getting focus only if it seems to implement key handling.
+ if ((state & WidgetState.CANVAS) != 0) {
+ takeFocus = hooksKeys ();
+ if ((style & SWT.EMBEDDED) != 0) takeFocus = true;
+ }
+
+ if (takeFocus && setTabItemFocus ()) return true;
+ Control [] children = _getChildren ();
+ for (int i=0; i<children.length; i++) {
+ Control child = children [i];
+ if (child.isTabItem () && child.setRadioFocus (true)) return true;
+ }
+ for (int i=0; i<children.length; i++) {
+ Control child = children [i];
+ if (child.isTabItem () && !child.isTabGroup () && child.setTabItemFocus ()) {
+ return true;
+ }
+ }
+ return false;
+}
+
+/**
+ * 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);
+ 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;
+}
+
+void updateBackground() {
+ super.updateBackground ();
+ Control [] children = _getChildren ();
+ for (int i=0; i<children.length; i++) {
+ if ((children [i].state & WidgetState.PARENT_BACKGROUND) != 0) {
+ children [i].updateBackground ();
+ }
+ }
+}
+
+void updateBackgroundMode () {
+ super.updateBackgroundMode ();
+ Control [] children = _getChildren ();
+ for (int i = 0; i < children.length; i++) {
+ children [i].updateBackgroundMode ();
+ }
+}
+
+void updateLayout (boolean all) {
+ Composite parent = findDeferredControl ();
+ if (parent != null) {
+ parent.state |= WidgetState.LAYOUT_CHILD;
+ return;
+ }
+ if ((state & WidgetState.LAYOUT_NEEDED) != 0) {
+ boolean changed = (state & WidgetState.LAYOUT_CHANGED) != 0;
+ state &= ~(WidgetState.LAYOUT_NEEDED | WidgetState.LAYOUT_CHANGED);
+ layout.layout (this, changed);
+ }
+ if (all) {
+ state &= ~WidgetState.LAYOUT_CHILD;
+ Control [] children = _getChildren ();
+ for (int i=0; i<children.length; i++) {
+ children [i].updateLayout (all);
+ }
+ }
+}
+}