/*******************************************************************************
 *  Copyright (c) 2008 Oracle. 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: Oracle. - initial API and implementation
 *******************************************************************************/
package org.eclipse.jpt.jpa.ui.internal.editors;

import org.eclipse.jface.action.IAction;
import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.action.IToolBarManager;
import org.eclipse.ui.IActionBars;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.actions.ActionFactory;
import org.eclipse.ui.ide.IDEActionFactory;
import org.eclipse.ui.part.MultiPageEditorActionBarContributor;
import org.eclipse.ui.texteditor.ITextEditor;
import org.eclipse.ui.texteditor.ITextEditorActionConstants;

/**
 *
 * @version 2.0
 * @since 2.0
 */
public class PersistenceContributor extends MultiPageEditorActionBarContributor {

	private IEditorPart activeEditorPart;

	/**
	 * Creates a new <code>PersistenceContributor</code>.
	 */
	public PersistenceContributor() {
		super();
	}

	/*
	 * (non-Javadoc)
	 */
	@Override
	public void contributeToMenu(IMenuManager manager) {
	}

	/*
	 * (non-Javadoc)
	 */
	@Override
	public void contributeToToolBar(IToolBarManager manager) {
	}

	/**
	 * Returns the action registed with the given text editor.
	 * @return IAction or null if editor is null.
	 */
	protected IAction getAction(ITextEditor editor, String actionID) {
		return (editor == null ? null : editor.getAction(actionID));
	}

	/*
	 * (non-Javadoc)
	 */
	@Override
	public void setActivePage(IEditorPart part) {

		if (activeEditorPart == part)
			return;

		activeEditorPart = part;

		IActionBars actionBars = getActionBars();
		if (actionBars != null) {

			ITextEditor editor = (part instanceof ITextEditor) ? (ITextEditor) part : null;

			actionBars.setGlobalActionHandler(
				ActionFactory.DELETE.getId(),
				getAction(editor, ITextEditorActionConstants.DELETE));
			actionBars.setGlobalActionHandler(
				ActionFactory.UNDO.getId(),
				getAction(editor, ITextEditorActionConstants.UNDO));
			actionBars.setGlobalActionHandler(
				ActionFactory.REDO.getId(),
				getAction(editor, ITextEditorActionConstants.REDO));
			actionBars.setGlobalActionHandler(
				ActionFactory.CUT.getId(),
				getAction(editor, ITextEditorActionConstants.CUT));
			actionBars.setGlobalActionHandler(
				ActionFactory.COPY.getId(),
				getAction(editor, ITextEditorActionConstants.COPY));
			actionBars.setGlobalActionHandler(
				ActionFactory.PASTE.getId(),
				getAction(editor, ITextEditorActionConstants.PASTE));
			actionBars.setGlobalActionHandler(
				ActionFactory.SELECT_ALL.getId(),
				getAction(editor, ITextEditorActionConstants.SELECT_ALL));
			actionBars.setGlobalActionHandler(
				ActionFactory.FIND.getId(),
				getAction(editor, ITextEditorActionConstants.FIND));
			actionBars.setGlobalActionHandler(
				IDEActionFactory.BOOKMARK.getId(),
				getAction(editor, IDEActionFactory.BOOKMARK.getId()));
			actionBars.updateActionBars();
		}
	}
}