/**
* Sets the receiver's text. The string may include the mnemonic character.
*
* <p>Mnemonics are indicated by an '&' that causes the next character to be the mnemonic.
* When the user presses a key sequence that matches the mnemonic, a selection event occurs. On
* most platforms, the mnemonic appears underlined but may be emphasised in a platform specific
* manner. The mnemonic indicator character '&' can be escaped by doubling it in the string,
* causing a single '&' to be displayed.
*
* @param string the new text
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_NULL_ARGUMENT - if the text is null
* </ul>
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void setText(String string) {
checkWidget();
if (string == null) error(SWT.ERROR_NULL_ARGUMENT);
if ((style & SWT.SEPARATOR) != 0) return;
super.setText(string);
parent.relayout();
redraw();
}
void releaseWidget() {
super.releaseWidget();
display.releaseToolTipHandle(handle);
if (parent.lastFocus == this) parent.lastFocus = null;
control = null;
toolTipText = null;
image = disabledImage = hotImage = null;
}
public void setImage(Image image) {
checkWidget();
if (image != null && image.isDisposed()) error(SWT.ERROR_INVALID_ARGUMENT);
if ((style & SWT.SEPARATOR) != 0) return;
super.setImage(image);
parent.relayout();
redraw();
}
void createWidget(int index) {
super.createWidget(index);
int topHandle = topHandle();
if (OS.XtIsRealized(topHandle)) {
/*
* Make sure that the widget has been properly realized
* because the widget was created after the parent
* has been realized.
*/
realizeChildren();
}
}
void hookEvents() {
super.hookEvents();
if ((style & SWT.SEPARATOR) != 0) return;
int windowProc = display.windowProc;
OS.XtAddEventHandler(handle, OS.KeyPressMask, false, windowProc, KEY_PRESS);
OS.XtAddEventHandler(handle, OS.KeyReleaseMask, false, windowProc, KEY_RELEASE);
OS.XtAddEventHandler(handle, OS.ButtonPressMask, false, windowProc, BUTTON_PRESS);
OS.XtAddEventHandler(handle, OS.ButtonReleaseMask, false, windowProc, BUTTON_RELEASE);
OS.XtAddEventHandler(handle, OS.PointerMotionMask, false, windowProc, POINTER_MOTION);
OS.XtAddEventHandler(handle, OS.EnterWindowMask, false, windowProc, ENTER_WINDOW);
OS.XtAddEventHandler(handle, OS.LeaveWindowMask, false, windowProc, LEAVE_WINDOW);
OS.XtAddCallback(handle, OS.XmNexposeCallback, windowProc, EXPOSURE_CALLBACK);
OS.XtInsertEventHandler(
handle, OS.FocusChangeMask, false, windowProc, FOCUS_CHANGE, OS.XtListTail);
}
void releaseHandle() {
super.releaseHandle();
parent = null;
}
public void dispose() {
if (isDisposed()) return;
ToolBar parent = this.parent;
super.dispose();
parent.relayout();
}
void destroyWidget() {
parent.destroyItem(this);
super.destroyWidget();
}