/**
* Install a copy popup menu on the specified control and activate the copy handler for the
* control when the control has focus. The handler will be deactivated when the control is
* disposed.
*
* @param copyable the copyable that will perform the copy
* @param control the control on which to install the menu and handler
*/
public static void activateCopy(ICopyable copyable, final Control control) {
IFocusService fs = PlatformUI.getWorkbench().getService(IFocusService.class);
final IHandlerService hs = PlatformUI.getWorkbench().getService(IHandlerService.class);
new CopyPopup(copyable, control);
if (fs != null && hs != null) {
fs.addFocusTracker(control, CONTROL_ID);
final IHandlerActivation handlerActivation =
hs.activateHandler(
CopyHandler.ID,
new CopyHandler(copyable),
new Expression() {
public EvaluationResult evaluate(IEvaluationContext context) {
return context.getVariable(ISources.ACTIVE_FOCUS_CONTROL_NAME) == control
? EvaluationResult.TRUE
: EvaluationResult.FALSE;
}
public void collectExpressionInfo(final ExpressionInfo info) {
info.addVariableNameAccess(ISources.ACTIVE_FOCUS_CONTROL_NAME);
}
});
control.addDisposeListener(
new DisposeListener() {
public void widgetDisposed(DisposeEvent e) {
hs.deactivateHandler(handlerActivation);
}
});
}
}
public static void addFocusTracker(
IServiceLocator serviceLocator, String controlID, Control control) {
final IFocusService focusService = serviceLocator.getService(IFocusService.class);
if (focusService != null) {
focusService.addFocusTracker(control, controlID);
} else {
log.debug("Focus service not found in " + serviceLocator);
}
}
public static void removeFocusTracker(IServiceLocator serviceLocator, Control control) {
if (PlatformUI.getWorkbench().isClosing()) {
// TODO: it is a bug in eclipse. During workbench shutdown disposed service returned.
return;
}
final IFocusService focusService = serviceLocator.getService(IFocusService.class);
if (focusService != null) {
focusService.removeFocusTracker(control);
} else {
log.debug("Focus service not found in " + serviceLocator);
}
}
