/*******************************************************************************
* Copyright (c) 2000, 2010, 2012 IBM Corporation, Gerhardt Informatics Kft. 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
* Gerhardt Informatics Kft. - GEFGWT port
*******************************************************************************/
package org.eclipse.swt.widgets;
import org.eclipse.swt.SWT;
import org.eclipse.swt.SWTException;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.internal.gwt.GdkEventKey;
import com.google.gwt.user.client.ui.LayoutPanel;
/**
* 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, EMBEDDED, DOUBLE_BUFFERED</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>
* Note: The <code>CENTER</code> style, although undefined for composites, has
* the same value as <code>EMBEDDED</code> which is used to embed widgets from
* other widget toolkits into SWT. On some operating systems (GTK, Motif), this
* may cause the children of this composite to be obscured.
* </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
* @see <a href="http://www.eclipse.org/swt/snippets/#composite">Composite
* snippets</a>
* @see <a href="http://www.eclipse.org/swt/">Sample code and further
* information</a>
*/
public class Composite extends Scrollable {
public long /* int */embeddedHandle;
long /* int */imHandle, socketHandle;
Layout layout;
Control[] tabList;
int layoutCount, backgroundMode;
private Rectangle clientArea;
static final String NO_INPUT_METHOD = "org.eclipse.swt.internal.gtk.noInputMethod"; //$NON-NLS-1$
Composite() {
/* Do nothing */
}
public Composite(com.google.gwt.user.client.ui.Widget gwtWidget, Widget parent, int style) {
super(gwtWidget, parent, style);
}
/**
* 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 SWT#EMBEDDED
* @see SWT#DOUBLE_BUFFERED
* @see Widget#getStyle
*/
public Composite(Composite parent, int style) {
this(new LayoutPanel(), parent, checkStyle(style));
}
static int checkStyle(int style) {
style &= ~SWT.TRANSPARENT;
return style;
}
Control[] _getChildren() {
return new Control[0];
}
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;
}
/**
* Clears any data that has been cached by a Layout for all widgets that are
* in the parent hierarchy of the changed control up to and including the
* receiver. If an ancestor does not have a layout, it is skipped.
*
* @param changed
* an array of controls that changed state and require a
* recalculation of size
*
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_INVALID_ARGUMENT - if the changed array is null
* any of its controls are null or have been disposed</li>
* <li>ERROR_INVALID_PARENT - if any control in changed is
* not in the widget tree of the receiver</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>
*
* @since 3.1
*/
public void changed(Control[] changed) {
checkWidget();
if (changed == null)
error(SWT.ERROR_INVALID_ARGUMENT);
for (int i = 0; i < changed.length; i++) {
Control control = changed[i];
if (control == null)
error(SWT.ERROR_INVALID_ARGUMENT);
if (control.isDisposed())
error(SWT.ERROR_INVALID_ARGUMENT);
boolean ancestor = false;
Composite composite = control.parent;
while (composite != null) {
ancestor = composite == this;
if (ancestor)
break;
composite = composite.parent;
}
if (!ancestor)
error(SWT.ERROR_INVALID_PARENT);
}
for (int i = 0; i < changed.length; i++) {
Control child = changed[i];
Composite composite = child.parent;
while (child != this) {
if (composite.layout == null
|| !composite.layout.flushCache(child)) {
composite.state |= LAYOUT_CHANGED;
}
child = composite;
composite = child.parent;
}
}
}
protected void checkSubclass() {
/* Do nothing - Subclassing is allowed */
}
public Point computeSize(int wHint, int hHint, boolean changed) {
checkWidget();
display.runSkin();
if (wHint != SWT.DEFAULT && wHint < 0)
wHint = 0;
if (hHint != SWT.DEFAULT && hHint < 0)
hHint = 0;
Point size;
if (layout != null) {
if (wHint == SWT.DEFAULT || hHint == SWT.DEFAULT) {
changed |= (state & LAYOUT_CHANGED) != 0;
size = layout.computeSize(this, wHint, hHint, changed);
state &= ~LAYOUT_CHANGED;
} else {
size = new Point(wHint, hHint);
}
} else {
size = minimumSize(wHint, hHint, changed);
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);
}
Widget[] computeTabList() {
Widget 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];
Widget[] childList = child.computeTabList();
if (childList.length != 0) {
Widget[] newResult = new Widget[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(int index) {
state |= HANDLE | CANVAS | CHECK_SUBWINDOW;
boolean scrolled = (style & (SWT.H_SCROLL | SWT.V_SCROLL)) != 0;
if (!scrolled)
state |= THEME_BACKGROUND;
createHandle(index, true, scrolled || (style & SWT.BORDER) != 0);
}
void createHandle(int index, boolean fixed, boolean scrolled) {
}
/**
* Fills the interior of the rectangle specified by the arguments, with the
* receiver's background.
*
* <p>
* The <code>offsetX</code> and <code>offsetY</code> are used to map from
* the <code>gc</code> origin to the origin of the parent image background.
* This is useful to ensure proper alignment of the image background.
* </p>
*
* @param gc
* the gc where the rectangle is to be filled
* @param x
* the x coordinate of the rectangle to be filled
* @param y
* the y coordinate of the rectangle to be filled
* @param width
* the width of the rectangle to be filled
* @param height
* the height of the rectangle to be filled
* @param offsetX
* the image background x offset
* @param offsetY
* the image background y offset
*
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_NULL_ARGUMENT - if the gc is null</li>
* <li>ERROR_INVALID_ARGUMENT - if the gc has been disposed</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>
*
* @since 3.6
*/
public void drawBackground(GC gc, int x, int y, int width, int height,
int offsetX, int offsetY) {
}
Composite findDeferredControl() {
return layoutCount > 0 ? this : parent.findDeferredControl();
}
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();
}
int getClientWidth() {
return 0;
}
/**
* 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;
}
/**
* Returns <code>true</code> if the receiver has deferred the performing of
* layout, and <code>false</code> otherwise.
*
* @return the receiver's deferred layout 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>
*
* @see #setLayoutDeferred(boolean)
* @see #isLayoutDeferred()
*
* @since 3.1
*/
public boolean getLayoutDeferred() {
checkWidget();
return layoutCount > 0;
}
/**
* 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;
}
void hookEvents() {
}
boolean hooksKeys() {
return hooks(SWT.KeyDown) || hooks(SWT.KeyUp);
}
long /* int */imHandle() {
return imHandle;
}
/**
* Returns <code>true</code> if the receiver or any ancestor up to and
* including the receiver's nearest ancestor shell has deferred the
* performing of layouts. Otherwise, <code>false</code> is returned.
*
* @return the receiver's deferred layout 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>
*
* @see #setLayoutDeferred(boolean)
* @see #getLayoutDeferred()
*
* @since 3.1
*/
public boolean isLayoutDeferred() {
checkWidget();
return findDeferredControl() != null;
}
boolean isTabGroup() {
if ((state & CANVAS) != 0)
return true;
return super.isTabGroup();
}
/**
* 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);
}
/**
* 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 changed
* argument is <code>true</code> the layout must not rely on any information
* it has cached about its 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
* all argument is <code>true</code> the layout will cascade down through
* all child widgets in the receiver's widget tree, regardless of whether
* the child has changed size. The changed argument is applied to all
* layouts. If the all argument is <code>false</code>, the layout will
* <em>not</em> cascade down through all child widgets in the receiver's
* widget tree. However, if a child is resized as a result of a call to
* layout, the resize event will invoke the layout of the child. 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
* @param all
* <code>true</code> if all children in the receiver's widget
* tree should be laid out, 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>
*
* @since 3.1
*/
public void layout(boolean changed, boolean all) {
checkWidget();
if (layout == null && !all)
return;
markLayout(changed, all);
updateLayout(all);
}
/**
* Forces a lay out (that is, sets the size and location) of all widgets
* that are in the parent hierarchy of the changed control up to and
* including the receiver. The layouts in the hierarchy must not rely on any
* information cached about the changed control or any of its ancestors. The
* layout may (potentially) optimize the work it is doing by assuming that
* none of the peers of the changed control have changed state since the
* last layout. If an ancestor does not have a layout, skip it.
* <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
* a control that has had a state change which requires a
* recalculation of its size
*
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_INVALID_ARGUMENT - if the changed array is null
* any of its controls are null or have been disposed</li>
* <li>ERROR_INVALID_PARENT - if any control in changed is
* not in the widget tree of the receiver</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>
*
* @since 3.1
*/
public void layout(Control[] changed) {
checkWidget();
if (changed == null)
error(SWT.ERROR_INVALID_ARGUMENT);
layout(changed, SWT.NONE);
}
/**
* Forces a lay out (that is, sets the size and location) of all widgets
* that are in the parent hierarchy of the changed control up to and
* including the receiver.
* <p>
* The parameter <code>flags</code> may be a combination of:
* <dl>
* <dt><b>SWT.ALL</b></dt>
* <dd>all children in the receiver's widget tree should be laid out</dd>
* <dt><b>SWT.CHANGED</b></dt>
* <dd>the layout must flush its caches</dd>
* <dt><b>SWT.DEFER</b></dt>
* <dd>layout will be deferred</dd>
* </dl>
* </p>
* <p>
* When the <code>changed</code> array is specified, the flags
* <code>SWT.ALL</code> and <code>SWT.CHANGED</code> have no effect. In this
* case, the layouts in the hierarchy must not rely on any information
* cached about the changed control or any of its ancestors. The layout may
* (potentially) optimize the work it is doing by assuming that none of the
* peers of the changed control have changed state since the last layout. If
* an ancestor does not have a layout, skip it.
* </p>
* <p>
* When the <code>changed</code> array is not specified, the flag
* <code>SWT.ALL</code> indicates that the whole widget tree should be laid
* out. And the flag <code>SWT.CHANGED</code> indicates that the layouts
* should flush any cached information for all controls that are laid out.
* </p>
* <p>
* The <code>SWT.DEFER</code> flag always causes the layout to be deferred
* by calling <code>Composite.setLayoutDeferred(true)</code> and scheduling
* a call to <code>Composite.setLayoutDeferred(false)</code>, which will
* happen when appropriate (usually before the next event is handled). When
* this flag is set, the application should not call
* <code>Composite.setLayoutDeferred(boolean)</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
* a control that has had a state change which requires a
* recalculation of its size
* @param flags
* the flags specifying how the layout should happen
*
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_INVALID_ARGUMENT - if any of the controls in
* changed is null or has been disposed</li>
* <li>ERROR_INVALID_PARENT - if any control in changed is
* not in the widget tree of the receiver</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>
*
* @since 3.6
*/
public void layout(Control[] changed, int flags) {
checkWidget();
if (changed != null) {
for (int i = 0; i < changed.length; i++) {
Control control = changed[i];
if (control == null)
error(SWT.ERROR_INVALID_ARGUMENT);
if (control.isDisposed())
error(SWT.ERROR_INVALID_ARGUMENT);
boolean ancestor = false;
Composite composite = control.parent;
while (composite != null) {
ancestor = composite == this;
if (ancestor)
break;
composite = composite.parent;
}
if (!ancestor)
error(SWT.ERROR_INVALID_PARENT);
}
int updateCount = 0;
Composite[] update = new Composite[16];
for (int i = 0; i < changed.length; i++) {
Control child = changed[i];
Composite composite = child.parent;
while (child != this) {
if (composite.layout != null) {
composite.state |= LAYOUT_NEEDED;
if (!composite.layout.flushCache(child)) {
composite.state |= LAYOUT_CHANGED;
}
}
if (updateCount == update.length) {
Composite[] newUpdate = new Composite[update.length + 16];
System.arraycopy(update, 0, newUpdate, 0, update.length);
update = newUpdate;
}
child = update[updateCount++] = composite;
composite = child.parent;
}
}
if ((flags & SWT.DEFER) != 0) {
setLayoutDeferred(true);
display.addLayoutDeferred(this);
}
for (int i = updateCount - 1; i >= 0; i--) {
update[i].updateLayout(false);
}
} else {
if (layout == null && (flags & SWT.ALL) == 0)
return;
markLayout((flags & SWT.CHANGED) != 0, (flags & SWT.ALL) != 0);
if ((flags & SWT.DEFER) != 0) {
setLayoutDeferred(true);
display.addLayoutDeferred(this);
}
updateLayout((flags & SWT.ALL) != 0);
}
}
void markLayout(boolean changed, boolean all) {
if (layout != null) {
state |= LAYOUT_NEEDED;
if (changed)
state |= LAYOUT_CHANGED;
}
if (all) {
Control[] children = _getChildren();
for (int i = 0; i < children.length; i++) {
children[i].markLayout(changed, all);
}
}
}
void moveChildren(int oldWidth) {
}
Point minimumSize(int wHint, int hHint, boolean changed) {
Control[] children = _getChildren();
Rectangle clientArea = getClientArea();
int width = 0, height = 0;
for (int i = 0; i < children.length; i++) {
Rectangle rect = children[i].getBounds();
width = Math.max(width, rect.x - clientArea.x + rect.width);
height = Math.max(height, rect.y - clientArea.y + rect.height);
}
return new Point(width, height);
}
void register() {
super.register();
if (socketHandle != 0)
display.addWidget(socketHandle, this);
}
void releaseChildren(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(destroy);
}
void releaseHandle() {
super.releaseHandle();
socketHandle = embeddedHandle = 0;
}
void releaseWidget() {
}
void removeControl(Control control) {
fixTabList(control);
}
void reskinChildren(int flags) {
super.reskinChildren(flags);
Control[] children = _getChildren();
for (int i = 0; i < children.length; i++) {
Control child = children[i];
if (child != null)
child.reskin(flags);
}
}
/**
* 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) {
}
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 & RESIZED) != 0 && layout != null) {
markLayout(false, false);
updateLayout(false);
}
return result;
}
public boolean setFocus() {
checkWidget();
Control[] children = _getChildren();
for (int i = 0; i < children.length; i++) {
Control child = children[i];
if (child.getVisible() && child.setFocus())
return true;
}
return super.setFocus();
}
/**
* 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;
}
/**
* If the argument is <code>true</code>, causes subsequent layout operations
* in the receiver or any of its children to be ignored. No layout of any
* kind can occur in the receiver or any of its children until the flag is
* set to false. Layout operations that occurred while the flag was
* <code>true</code> are remembered and when the flag is set to
* <code>false</code>, the layout operations are performed in an optimized
* manner. Nested calls to this method are stacked.
*
* @param defer
* the new defer 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>
*
* @see #layout(boolean)
* @see #layout(Control[])
*
* @since 3.1
*/
public void setLayoutDeferred(boolean defer) {
checkWidget();
if (!defer) {
if (--layoutCount == 0) {
if ((state & LAYOUT_CHILD) != 0 || (state & LAYOUT_NEEDED) != 0) {
updateLayout(true);
}
}
} else {
layoutCount++;
}
}
void setOrientation(boolean create) {
super.setOrientation(create);
if (!create) {
int flags = SWT.RIGHT_TO_LEFT | SWT.LEFT_TO_RIGHT;
int orientation = style & flags;
Control[] children = _getChildren();
for (int i = 0; i < children.length; i++) {
children[i].setOrientation(orientation);
}
if (((style & SWT.RIGHT_TO_LEFT) != 0) != ((style & SWT.MIRRORED) != 0)) {
moveChildren(-1);
}
}
}
boolean setScrollBarVisible(ScrollBar bar, boolean visible) {
boolean changed = super.setScrollBarVisible(bar, visible);
if (changed && layout != null) {
markLayout(false, false);
updateLayout(false);
}
return changed;
}
boolean setTabGroupFocus(boolean next) {
if (isTabItem())
return setTabItemFocus(next);
boolean takeFocus = (style & SWT.NO_FOCUS) == 0;
if ((state & CANVAS) != 0)
takeFocus = hooksKeys();
if (socketHandle != 0)
takeFocus = true;
if (takeFocus && setTabItemFocus(next))
return true;
Control[] children = _getChildren();
for (int i = 0; i < children.length; i++) {
Control child = children[i];
if (child.isTabItem() && child.setTabItemFocus(next))
return true;
}
return false;
}
boolean setTabItemFocus(boolean next) {
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;
}
boolean translateMnemonic(Event event, Control control) {
if (super.translateMnemonic(event, control))
return true;
if (control != null) {
Control[] children = _getChildren();
for (int i = 0; i < children.length; i++) {
Control child = children[i];
if (child.translateMnemonic(event, control))
return true;
}
}
return false;
}
int traversalCode(int key, GdkEventKey event) {
if ((state & CANVAS) != 0) {
if ((style & SWT.NO_FOCUS) != 0)
return 0;
if (hooksKeys())
return 0;
}
return super.traversalCode(key, event);
}
boolean translateTraversal(GdkEventKey keyEvent) {
if (socketHandle != 0)
return false;
return super.translateTraversal(keyEvent);
}
void updateLayout(boolean all) {
Composite parent = findDeferredControl();
if (parent != null) {
parent.state |= LAYOUT_CHILD;
return;
}
if ((state & LAYOUT_NEEDED) != 0) {
boolean changed = (state & LAYOUT_CHANGED) != 0;
state &= ~(LAYOUT_NEEDED | LAYOUT_CHANGED);
display.runSkin();
layout.layout(this, changed);
}
if (all) {
state &= ~LAYOUT_CHILD;
Control[] children = _getChildren();
for (int i = 0; i < children.length; i++) {
children[i].updateLayout(all);
}
}
}
}