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/*******************************************************************************
* Copyright (c) 2012 Frank Becker 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:
* Frank Becker - initial API and implementation
* Tasktop Technologies - improvements
*******************************************************************************/
package org.eclipse.mylyn.internal.tasks.ui.commands;
import java.util.Iterator;
import java.util.Map;
import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.Command;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionProvider;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.mylyn.internal.tasks.ui.TasksUiPlugin;
import org.eclipse.mylyn.tasks.core.TaskRepository;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.commands.IElementUpdater;
import org.eclipse.ui.handlers.HandlerUtil;
import org.eclipse.ui.internal.WorkbenchWindow;
import org.eclipse.ui.menus.UIElement;
/**
* @author Frank Becker
* @author Steffen Pingel
*/
public class DisconnectHandler extends AbstractHandler implements IElementUpdater {
public Object execute(ExecutionEvent event) throws ExecutionException {
Command command0 = event.getCommand();
boolean oldValue = HandlerUtil.toggleCommandState(command0);
ISelection selection = HandlerUtil.getCurrentSelection(event);
if (selection instanceof IStructuredSelection) {
for (Iterator<?> iter = ((IStructuredSelection) selection).iterator(); iter.hasNext();) {
Object item = iter.next();
if (item instanceof TaskRepository) {
((TaskRepository) item).setOffline(!oldValue);
TasksUiPlugin.getRepositoryManager().notifyRepositorySettingsChanged((TaskRepository) item);
}
}
}
return null;
}
public void updateElement(UIElement element, @SuppressWarnings("rawtypes")
Map parameters) {
IWorkbenchWindow window = (IWorkbenchWindow) element.getServiceLocator().getService(IWorkbenchWindow.class);
if (window != null) {
IWorkbenchPage activePage = ((WorkbenchWindow) window).getActivePage();
if (activePage != null) {
IWorkbenchPart activePart = activePage.getActivePart();
if (activePart != null) {
ISelectionProvider selectionProvider = activePart.getSite().getSelectionProvider();
if (selectionProvider != null) {
ISelection selection = selectionProvider.getSelection();
if (selection instanceof IStructuredSelection) {
// only for enabled Handlers the updateElement is called
// so we only need the first repository for set the state
Object firstRepository = ((IStructuredSelection) selection).getFirstElement();
if (firstRepository instanceof TaskRepository) {
boolean checked = ((TaskRepository) firstRepository).isOffline();
element.setChecked(checked);
}
}
}
}
}
}
}
}
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