/*******************************************************************************
 * Copyright (c) 2005, 2007 IBM Corporation 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.ui.internal.actions;

import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;

import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.ActionContributionItem;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.action.Separator;
//import org.eclipse.jface.bindings.keys.IKeyLookup;
//import org.eclipse.jface.bindings.keys.KeyLookupFactory;
import org.eclipse.jface.window.Window;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.IWorkingSet;
import org.eclipse.ui.internal.WorkbenchMessages;
import org.eclipse.ui.internal.dialogs.SimpleWorkingSetSelectionDialog;

/**
 * Action to select the visible working sets for a given workbench page.
 */
public class SelectWorkingSetsAction extends AbstractWorkingSetPulldownDelegate  {

	private class ManageWorkingSetsAction extends Action {

		ManageWorkingSetsAction() {
			super(WorkbenchMessages.get().Edit);
		}

		public void run() {
			SelectWorkingSetsAction.this.run(this);
		}
	}

	private class ToggleWorkingSetAction extends Action {
		private IWorkingSet set;

		ToggleWorkingSetAction(IWorkingSet set) {
			super(set.getLabel(), IAction.AS_CHECK_BOX);
			setImageDescriptor(set.getImageDescriptor());
			this.set = set;
			setChecked(isWorkingSetEnabled(set));
		}

		public void runWithEvent(Event event) {
			
			Set newList = new HashSet(Arrays.asList(getWindow().getActivePage()
					.getWorkingSets()));

			if (isChecked()) {
// RAP [rh] missing key events			  
//				// if the primary modifier key is down then clear the list
//				// first. this makes the selection exclusive rather than
//				// additive.
//				boolean modified = (event.stateMask & KeyLookupFactory
//						.getDefault().formalModifierLookup(IKeyLookup.M1_NAME)) != 0;
//				
//				if (modified) 
//					newList.clear();
				newList.add(set);
			} else {
				newList.remove(set);
			}

			getWindow().getActivePage().setWorkingSets(
					(IWorkingSet[]) newList.toArray(new IWorkingSet[newList
							.size()]));
		}
	}

	protected void fillMenu(Menu menu) {
		IWorkingSet[][] typedSets = splitSets();

		for (int i = 0; i < typedSets.length; i++) {
			IWorkingSet[] sets = typedSets[i];
			for (int j = 0; j < sets.length; j++) {
				IWorkingSet set = sets[j];

				// only add visible sets
				// if (set.isVisible()) {
				ActionContributionItem item = new ActionContributionItem(
						new ToggleWorkingSetAction(set));
				item.fill(menu, -1);
				// }
			}
			Separator separator = new Separator();
			separator.fill(menu, -1);
		}

		ActionContributionItem item = new ActionContributionItem(
				new ManageWorkingSetsAction());
		item.fill(menu, -1);

	}

	private IWorkingSet[] getEnabledSets() {
		return getWindow().getActivePage().getWorkingSets();
	}

	private boolean isWorkingSetEnabled(IWorkingSet set) {
		IWorkingSet[] enabledSets = getEnabledSets();
		for (int i = 0; i < enabledSets.length; i++) {
			if (enabledSets[i].equals(set)) {
				return true;
			}
		}
		return false;
	}

	public void run(IAction action) {
		ConfigureWindowWorkingSetsDialog dialog = new ConfigureWindowWorkingSetsDialog(
				getWindow());
		if (dialog.open() == Window.OK) {

		}

	}
}

class ConfigureWindowWorkingSetsDialog extends SimpleWorkingSetSelectionDialog {

	private IWorkbenchWindow window;
	
	protected ConfigureWindowWorkingSetsDialog(IWorkbenchWindow window) {
		super(window.getShell(), null, window.getActivePage().getWorkingSets(), true);
		this.window = window;
		setTitle(WorkbenchMessages.get().WorkingSetSelectionDialog_title_multiSelect);
		setMessage(WorkbenchMessages.get().WorkingSetSelectionDialog_message_multiSelect);
	}
	
	protected void okPressed() {
		super.okPressed();
		window.getActivePage().setWorkingSets(getSelection());
	}
}