<extension

         point="org.eclipse.ui.menus">

      <menuContribution

            locationURI="popup:org.eclipse.mylyn.tasks.ui.views.repositories?after=additions">

         <menu

               label="WikiText Editor Style"

               tooltip="Select editor style">

            <dynamic

                  class="org.eclipse.mylyn.internal.sandbox.ui.editors.EditorStyleContributionItems"

                  id="org.eclipse.mylyn.sandbox.ui.editorStyleDropDown">

            </dynamic>

         </menu>

      </menuContribution>

   </extension>

/*******************************************************************************

 * Copyright (c) 2004, 2007 Mylyn project committers 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

 *******************************************************************************/

package org.eclipse.mylyn.internal.sandbox.ui.editors;

import java.util.ArrayList;

import java.util.List;

import java.util.SortedSet;

import org.eclipse.jface.action.Action;

import org.eclipse.jface.action.ActionContributionItem;

import org.eclipse.jface.action.IContributionItem;

import org.eclipse.mylyn.internal.sandbox.ui.editors.TaskEditorExtensions.RegisteredTaskEditorExtension;

import org.eclipse.mylyn.tasks.core.TaskRepository;

import org.eclipse.mylyn.tasks.ui.TasksUiUtil;

import org.eclipse.ui.actions.CompoundContributionItem;

/**

 * Contribute a popup menu which can be used to select editor styles in TaskRepositoriesView,

 * 

 * @author Jingwen Ou

 */

public class EditorStyleContributionItems extends CompoundContributionItem {

	private class EditorStyleContributionAction extends Action {

		private final RegisteredTaskEditorExtension editorExtension;

		public EditorStyleContributionAction(RegisteredTaskEditorExtension editorExtension) {

			super(editorExtension.getName());

			setId(editorExtension.getId() + ".action");

			this.editorExtension = editorExtension;

		}

		// default constructor only needs specifying id and name

		public EditorStyleContributionAction(String id, String name) {

			super(name);

			setId(id);

			this.editorExtension = null;

		}

		@Override

		public void run() {

			if (taskRepository != null) {

				TaskEditorExtensions.setTaskEditorExtensionId(taskRepository,

						editorExtension != null ? editorExtension.getId() : "");

				setChecked(true);

			}

		}

	}

	private final TaskRepository taskRepository;

	public EditorStyleContributionItems() {

		this(null);

	}

	public EditorStyleContributionItems(String id) {

		// returns the selecting TaskRepository

		this(id, TasksUiUtil.getSelectedRepository());

	}

	public EditorStyleContributionItems(String id, TaskRepository taskRepository) {

		super(id);

		this.taskRepository = taskRepository;

	}

	@Override

	protected IContributionItem[] getContributionItems() {

		List<IContributionItem> items = new ArrayList<IContributionItem>();

		// TODO: use TaskEditorExtensions.addTaskEditorExtension() to add a "null" task editor extension indicating the markup language can be turned off

		// so that we don't have to treat "None" as a special action, no style is also a style...

		EditorStyleContributionAction noEditorStyleContributionAction = new EditorStyleContributionAction(

				"org.eclipse.mylyn.sandbox.ui.action.none", "None");

		items.add(new ActionContributionItem(noEditorStyleContributionAction));

		String defaultExtensionId = TaskEditorExtensions.getTaskEditorExtensionId(taskRepository);

		if (defaultExtensionId == null || defaultExtensionId.equals("")) {

			noEditorStyleContributionAction.setChecked(true);

		}

		SortedSet<RegisteredTaskEditorExtension> allEditorExtensions = TaskEditorExtensions.getTaskEditorExtensions();

		for (RegisteredTaskEditorExtension editorExtension : allEditorExtensions) {

			Action editorStyleAction = new EditorStyleContributionAction(editorExtension);

			ActionContributionItem item = new ActionContributionItem(editorStyleAction);

			if (editorExtension.getId().equals(defaultExtensionId)) {

				editorStyleAction.setChecked(true);

			}

			items.add(item);

		}

		return items.toArray(new IContributionItem[items.size()]);

	}

}