bundles/org.eclipse.team.ui/src/org/eclipse/team/internal/ui/sync/actions/SyncViewerSubscriberListActions.java

/*******************************************************************************
 * Copyright (c) 2000, 2003 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.team.internal.ui.sync.actions;

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.action.Separator;
import org.eclipse.team.internal.ui.sync.sets.SubscriberInput;
import org.eclipse.team.internal.ui.sync.views.SynchronizeView;
import org.eclipse.ui.actions.ActionContext;

/**
 * SyncViewerSubscriberListActions
 */
public class SyncViewerSubscriberListActions extends SyncViewerActionGroup {

	// {QualifiedName:subscriber id -> SubscriberInput}
	private Map actions = new HashMap();
	private SubscriberInput activeInput = null;
	private CancelSubscription cancelAction;

	/**
	 * Action for filtering by change type.
	 */
	class SwitchSubscriberAction extends Action {
		private SubscriberInput input;
		public SwitchSubscriberAction(SubscriberInput input) {
			super(input.getSubscriber().getName(), Action.AS_RADIO_BUTTON);
			this.input = input;
		}
		public void run() {
			// Uncheck and let the activate check once the activate succeeds
			setChecked(false);
			SyncViewerSubscriberListActions.this.activate(this);
		}
		public SubscriberInput getSubscriberInput() {
			return input;
		}
	}

	public SyncViewerSubscriberListActions(SynchronizeView syncView) {
		super(syncView);
		setContext(null);
	}

	public void activate(SwitchSubscriberAction activatedAction) {
		if(activeInput == null || ! activatedAction.getSubscriberInput().getSubscriber().getId().equals(activeInput.getSubscriber().getId())) {
			getSyncView().initializeSubscriberInput(activatedAction.getSubscriberInput());
			// The action check state will be updated when the view invokes
			// setContext which then invokes initializeActions
		} else {
			activatedAction.setChecked(true);
		}
	}

	/*
	 * Called when a context is enabled for the view.
	 *  (non-Javadoc)
	 * @see SyncViewerActionGroup#initializeActions()
	 */
	public void initializeActions() {
		SubscriberInput input = getSubscriberContext();
		if (input != null) {
			for (Iterator it = actions.values().iterator(); it.hasNext();) {
				SwitchSubscriberAction action =
					(SwitchSubscriberAction) it.next();
				boolean checked = action.getSubscriberInput().getSubscriber().getId().equals(
														input.getSubscriber().getId());											
				action.setChecked(checked);
				if(checked) {
					activeInput = input;
				}
			}
			cancelAction.setEnabled(input.getSubscriber().isCancellable());
			cancelAction.setSubscriber(input.getSubscriber());
		} else {
			if(cancelAction != null)
				cancelAction.setEnabled(false);
		}
	}

   /* 
    * Checking of the currently active subscriber input is done when the context is set
    * in the initializeActions method. 
	* (non-Javadoc)
	* @see fillContextMenu(org.eclipse.jface.action.IMenuManager)
	*/
	public void fillContextMenu(IMenuManager menu) {
		super.fillContextMenu(menu);
		if (! actions.isEmpty()) {
			for (Iterator it = actions.values().iterator(); it.hasNext();) {
				SwitchSubscriberAction action = (SwitchSubscriberAction) it.next();
				menu.add(action);				
			}
			if(cancelAction != null) {
				menu.add(new Separator());
				menu.add(cancelAction);
			}
		}
	}
	
	/* (non-Javadoc)
	 * @see org.eclipse.team.internal.ui.sync.actions.SyncViewerActionGroup#addContext(org.eclipse.ui.actions.ActionContext)
	 */
	public void addContext(ActionContext context) {
		boolean enableFirstContext = actions.isEmpty();
		SubscriberInput input = (SubscriberInput)context.getInput();
		SwitchSubscriberAction action =  new SwitchSubscriberAction(input);
		actions.put(input.getSubscriber().getId(), action);		
		if(cancelAction == null) {
			cancelAction = new CancelSubscription(input.getSubscriber());
		}
		if(enableFirstContext) {
			activate(action);
		}	
	}
	
	/* 
	 * Method to add menu items to a toolbar drop down action
	 */
	public void fillMenu(SyncViewerToolbarDropDownAction dropDown) {
		super.fillMenu(dropDown);
		if (! actions.isEmpty()) {
			for (Iterator it = actions.values().iterator(); it.hasNext();) {
				SwitchSubscriberAction action = (SwitchSubscriberAction) it.next();
				dropDown.add(action);				
			}
			if(cancelAction != null) {
				dropDown.add(new Separator());
				dropDown.add(cancelAction);
			}
		}
	 }
	/* (non-Javadoc)
	 * @see org.eclipse.team.internal.ui.sync.actions.SyncViewerActionGroup#removeContext(org.eclipse.ui.actions.ActionContext)
	 */
	public void removeContext(ActionContext context) {
		SubscriberInput input = (SubscriberInput)context.getInput();
		actions.remove(input.getSubscriber().getId());
	}
}