/*******************************************************************************
 * Copyright (c) 2008, 2011 Obeo.
 * 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:
 *     Obeo - initial API and implementation
 *******************************************************************************/
package org.eclipse.emf.eef.runtime.ui.utils;

import org.eclipse.emf.edit.domain.EditingDomain;
import org.eclipse.emf.edit.domain.IEditingDomainProvider;
import org.eclipse.emf.eef.runtime.ui.UIConstants;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.PlatformUI;

/**
 * @author <a href="mailto:goulwen.lefur@obeo.fr">Goulwen Le Fur</a>
 */
public class EditingUtils {

	/**
	 * @param part
	 *            the workbench part managing the editing domain
	 * @return if provided the editingDomain of the given workbench part
	 */
	public static EditingDomain getResourceSetFromEditor(IWorkbenchPart part) {
		EditingDomain editingDomain = null;
		if (part instanceof IEditingDomainProvider) {
			editingDomain = ((IEditingDomainProvider)part).getEditingDomain();
		} else {
			if (part.getAdapter(IEditingDomainProvider.class) != null)
				editingDomain = ((IEditingDomainProvider)part
						.getAdapter(IEditingDomainProvider.class)).getEditingDomain();
			else if (part.getAdapter(EditingDomain.class) != null)
				editingDomain = (EditingDomain)part.getAdapter(EditingDomain.class);
		}
		return editingDomain;
	}

	/**
	 * Set an id to a given widget.
	 * 
	 * @param widget
	 *            the widget where put the ID
	 * @param value
	 *            the ID to put
	 */
	public static void setID(Control widget, Object value) {
		if (widget != null)
			widget.setData(UIConstants.EEF_WIDGET_ID_KEY, value);
	}

	/**
	 * Return the ID of a widget?
	 * 
	 * @param widget
	 *            the widget to inspect
	 * @return the ID of the widget
	 */
	public static Object getID(Control widget) {
		if (widget != null)
			return widget.getData(UIConstants.EEF_WIDGET_ID_KEY);
		return null;
	}

	/**
	 * Set the EEF type of widget.
	 * 
	 * @param widget
	 *            the widget where put the ID
	 * @param value
	 *            the type of the widget
	 */
	public static void setEEFtype(Control widget, String value) {
		if (widget != null)
			widget.setData(UIConstants.EEF_WIDGET_TYPE_KEY, value);
	}

	/**
	 * Return the ID of a widget?
	 * 
	 * @param widget
	 *            the widget to inspect
	 * @return the ID of the widget
	 */
	public static String getEEFType(Control widget) {
		if (widget != null) {
			Object data = widget.getData(UIConstants.EEF_WIDGET_ID_KEY);
			if (data instanceof String)
				return (String)data;
		}
		return UIConstants.UNKNOW_EEF_TYPE;
	}

	/**
	 * @return platform shell
	 */
	public static Shell getShell() {
		Shell theShell = null;
		if (PlatformUI.getWorkbench() != null && PlatformUI.getWorkbench().getActiveWorkbenchWindow() != null) {
			theShell = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell();
		} else {
		    theShell = new Shell();
		}
		return theShell;
	}
}