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/*******************************************************************************
* Copyright (c) 2011, 2012 Wind River Systems, Inc. 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:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.tcf.te.tcf.ui.views.scriptpad.actions;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.ActionContributionItem;
import org.eclipse.jface.action.ContributionItem;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.action.IMenuCreator;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.swt.events.MenuAdapter;
import org.eclipse.swt.events.MenuEvent;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.MenuItem;
import org.eclipse.tcf.protocol.Protocol;
import org.eclipse.tcf.te.tcf.locator.interfaces.IModelListener;
import org.eclipse.tcf.te.tcf.locator.interfaces.nodes.ILocatorModel;
import org.eclipse.tcf.te.tcf.locator.interfaces.nodes.IPeerModel;
import org.eclipse.tcf.te.tcf.locator.listener.ModelAdapter;
import org.eclipse.tcf.te.tcf.locator.model.Model;
import org.eclipse.tcf.te.tcf.ui.views.scriptpad.ScriptPad;
import org.eclipse.tcf.te.ui.swt.DisplayUtil;
import org.eclipse.ui.IActionDelegate2;
import org.eclipse.ui.IViewActionDelegate;
import org.eclipse.ui.IViewPart;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.IWorkbenchWindowPulldownDelegate2;
import org.eclipse.ui.actions.ActionFactory.IWorkbenchAction;
/**
* Peers selection sub menu action implementation.
*/
public class PeersSubMenuAction extends Action implements IMenuCreator, IViewActionDelegate, IActionDelegate2, IWorkbenchAction, IWorkbenchWindowPulldownDelegate2 {
// Reference to the action proxy
/* default */ IAction actionProxy;
// Reference to the locator model listener
/* default */ IModelListener listener;
// Parent view part
/* default */ IViewPart view;
/**
* Constructor.
*/
public PeersSubMenuAction() {
super();
// Create and register the locator model listener
listener = new ModelAdapter() {
@Override
public void locatorModelChanged(ILocatorModel model, IPeerModel peer, boolean added) {
// Re-evaluate the enablement
if (actionProxy != null) {
final IPeerModel[] peers = Model.getModel().getPeers();
actionProxy.setEnabled(peers != null && peers.length > 0);
// If the peer is not set to the view yet, but the action get's
// enabled, than force the first peer in the list to be the selected one.
if (actionProxy.isEnabled() && view instanceof ScriptPad && ((ScriptPad)view).getPeerModel() == null) {
DisplayUtil.safeAsyncExec(new Runnable() {
@Override
public void run() {
((ScriptPad)view).setPeerModel(peers[0]);
}
});
}
}
}
};
Protocol.invokeLater(new Runnable() {
@Override
public void run() {
Model.getModel().addListener(listener);
}
});
}
/* (non-Javadoc)
* @see org.eclipse.ui.IWorkbenchWindowActionDelegate#init(org.eclipse.ui.IWorkbenchWindow)
*/
@Override
public void init(IWorkbenchWindow window) {
}
/* (non-Javadoc)
* @see org.eclipse.ui.IViewActionDelegate#init(org.eclipse.ui.IViewPart)
*/
@Override
public void init(IViewPart view) {
this.view = view;
// If the action proxy is already set, it means that the init(IAction)
// has been called before. Re-trigger the action enablement.
if (actionProxy != null) {
listener.locatorModelChanged(Model.getModel(), null, false);
}
}
/* (non-Javadoc)
* @see org.eclipse.ui.IActionDelegate2#init(org.eclipse.jface.action.IAction)
*/
@Override
public void init(IAction action) {
this.actionProxy = action;
if (action != null) {
action.setMenuCreator(this);
// Determine the enablement. The action is disabled
// if no peers are available.
IPeerModel[] peers = Model.getModel().getPeers();
if (peers != null && peers.length > 0) {
action.setEnabled(true);
if (view instanceof ScriptPad) ((ScriptPad)view).setPeerModel(peers[0]);
} else {
action.setEnabled(false);
if (view instanceof ScriptPad) ((ScriptPad)view).setPeerModel(null);
}
}
}
/* (non-Javadoc)
* @see org.eclipse.ui.IActionDelegate#run(org.eclipse.jface.action.IAction)
*/
@Override
public void run(IAction action) {
}
/* (non-Javadoc)
* @see org.eclipse.ui.IActionDelegate2#runWithEvent(org.eclipse.jface.action.IAction, org.eclipse.swt.widgets.Event)
*/
@Override
public void runWithEvent(IAction action, Event event) {
}
/* (non-Javadoc)
* @see org.eclipse.ui.IActionDelegate#selectionChanged(org.eclipse.jface.action.IAction, org.eclipse.jface.viewers.ISelection)
*/
@Override
public void selectionChanged(IAction action, ISelection selection) {
}
/* (non-Javadoc)
* @see org.eclipse.jface.action.IMenuCreator#dispose()
*/
@Override
public void dispose() {
if (listener != null) {
Protocol.invokeLater(new Runnable() {
@Override
public void run() {
Model.getModel().removeListener(listener);
listener = null;
}
});
}
}
/* (non-Javadoc)
* @see org.eclipse.jface.action.IMenuCreator#getMenu(org.eclipse.swt.widgets.Control)
*/
@Override
public Menu getMenu(Control parent) {
Menu menu = new Menu(parent);
return getSubMenu(menu);
}
/* (non-Javadoc)
* @see org.eclipse.jface.action.IMenuCreator#getMenu(org.eclipse.swt.widgets.Menu)
*/
@Override
public Menu getMenu(Menu parent) {
Menu menu = new Menu(parent);
return getSubMenu(menu);
}
/*
* Create the new sub menu.
*/
private Menu getSubMenu(Menu menu) {
menu.addMenuListener(new MenuAdapter() {
/* (non-Javadoc)
* @see org.eclipse.swt.events.MenuAdapter#menuShown(org.eclipse.swt.events.MenuEvent)
*/
@Override
public void menuShown(MenuEvent e) {
ContributionItem item;
// dispose all "old" menu items before fill up the menu with new ones
Menu m = (Menu)e.widget;
MenuItem[] items = m.getItems();
for (MenuItem item2 : items) {
item2.dispose();
}
// Get the selected peer model
IPeerModel selected = null;
if (view instanceof ScriptPad) selected = ((ScriptPad)view).getPeerModel();
boolean selectFirst = selected == null;
IPeerModel[] peers = Model.getModel().getPeers();
if (peers != null && peers.length > 0) {
for (IPeerModel peer : peers) {
Action action = new PeerAction(view, peer);
if (selectFirst) {
action.setChecked(true);
selectFirst = false;
if (view instanceof ScriptPad) ((ScriptPad)view).setPeerModel(peer);
} else if (selected != null && selected.equals(peer)) {
action.setChecked(true);
if (view instanceof ScriptPad) ((ScriptPad)view).setPeerModel(peer);
}
item = new ActionContributionItem(action);
item.fill(m, -1);
}
}
}
});
return menu;
}
}
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