private BusyIndicator getBusyLabel() {
if (busyLabel != null) {
return busyLabel;
}
try {
FormHeading heading = (FormHeading) getHeaderForm().getForm().getForm().getHead();
// ensure that busy label exists
heading.setBusy(true);
heading.setBusy(false);
Field field = FormHeading.class.getDeclaredField("titleRegion"); // $NON-NLS-1$
field.setAccessible(true);
TitleRegion titleRegion = (TitleRegion) field.get(heading);
for (Control child : titleRegion.getChildren()) {
if (child instanceof BusyIndicator) {
busyLabel = (BusyIndicator) child;
}
}
if (busyLabel == null) {
return null;
}
busyLabel.addControlListener(
new ControlAdapter() {
@Override
public void controlMoved(ControlEvent e) {
updateSizeAndLocations();
}
});
// the busy label may get disposed if it has no image
busyLabel.addDisposeListener(
new DisposeListener() {
public void widgetDisposed(DisposeEvent e) {
busyLabel.setMenu(null);
busyLabel = null;
}
});
if (leftToolBar != null) {
leftToolBar.moveAbove(busyLabel);
}
if (titleLabel != null) {
titleLabel.moveAbove(busyLabel);
}
updateSizeAndLocations();
return busyLabel;
} catch (Exception e) {
if (!toolBarFailureLogged) {
StatusHandler.log(
new Status(
IStatus.ERROR,
TasksUiPlugin.ID_PLUGIN,
"Failed to obtain busy label toolbar",
e)); //$NON-NLS-1$
}
busyLabel = null;
}
return busyLabel;
}
@Override
protected Composite createPageContainer(Composite parent) {
this.editorParent = parent;
Composite composite = super.createPageContainer(parent);
EditorUtil.initializeScrollbars(getHeaderForm().getForm());
// create left tool bar that replaces form heading label
try {
FormHeading heading = (FormHeading) getHeaderForm().getForm().getForm().getHead();
Field field = FormHeading.class.getDeclaredField("titleRegion"); // $NON-NLS-1$
field.setAccessible(true);
TitleRegion titleRegion = (TitleRegion) field.get(heading);
leftToolBarManager = new ToolBarManager(SWT.FLAT);
leftToolBar = leftToolBarManager.createControl(titleRegion);
leftToolBar.addControlListener(
new ControlAdapter() {
private boolean ignoreResizeEvents;
@Override
public void controlResized(ControlEvent e) {
if (ignoreResizeEvents) {
return;
}
ignoreResizeEvents = true;
try {
// the tool bar contents has changed, update state
updateHeaderImage();
updateHeaderLabel();
} finally {
ignoreResizeEvents = false;
}
}
});
// titleLabel = new Label(titleRegion, SWT.NONE);
// need a viewer for copy support
TextViewer titleViewer = new TextViewer(titleRegion, SWT.READ_ONLY);
// Eclipse 3.3 needs a document, otherwise an NPE is thrown
titleViewer.setDocument(new Document());
titleLabel = titleViewer.getTextWidget();
titleLabel.setForeground(heading.getForeground());
titleLabel.setFont(heading.getFont());
// XXX work-around problem that causes field to maintain selection when unfocused
titleLabel.addFocusListener(
new FocusAdapter() {
@Override
public void focusLost(FocusEvent e) {
titleLabel.setSelection(0);
}
});
titleRegion.addControlListener(
new ControlAdapter() {
@Override
public void controlResized(ControlEvent e) {
// do not create busyLabel to avoid recursion
updateSizeAndLocations();
}
});
IHandlerService handlerService =
(IHandlerService) getSite().getService(IHandlerService.class);
if (handlerService != null) {
textSupport = new CommonTextSupport(handlerService);
textSupport.install(titleViewer, false);
}
} catch (Exception e) {
if (!toolBarFailureLogged) {
StatusHandler.log(
new Status(
IStatus.ERROR,
TasksUiPlugin.ID_PLUGIN,
"Failed to obtain busy label toolbar",
e)); //$NON-NLS-1$
}
if (titleLabel != null) {
titleLabel.dispose();
titleLabel = null;
}
if (leftToolBar != null) {
leftToolBar.dispose();
leftToolBar = null;
}
if (leftToolBarManager != null) {
leftToolBarManager.dispose();
leftToolBarManager = null;
}
}
updateHeader();
return composite;
}