/*******************************************************************************
 * Copyright (c) 2005 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.bpel.common.ui.tray;

import org.eclipse.bpel.common.ui.CommonUIPlugin;
import org.eclipse.bpel.common.ui.details.IDetailsColors;
import org.eclipse.draw2d.Figure;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.ToolbarLayout;
import org.eclipse.gef.EditPart;
import org.eclipse.gef.commands.CommandStack;
import org.eclipse.jface.viewers.StructuredSelection;


/**
 * The container edit part to be used by the Tray editor.
 */
public abstract class TrayContainerEditPart extends TrayEditPart {

	protected class TrayContainerFigure extends Figure {
		protected IFigure titleFigure;
		protected IFigure childrenFigure;
		public TrayContainerFigure() {
			super();
			setLayoutManager(new ToolbarLayout());
			setOpaque(true);
			setBackgroundColor(CommonUIPlugin.getDefault().getColorRegistry().get(IDetailsColors.COLOR_TRAY_BACKGROUND));
		}
		public IFigure getChildrenFigure() {
			return childrenFigure;
		}
		public void setChildrenFigure(IFigure target) {
			if (childrenFigure != null) {
				remove(childrenFigure);
			}
			childrenFigure = target;
			add(target);
		}
		public IFigure getTitleFigure() {
			return titleFigure;
		}
		public void setTitleFigure(IFigure target) {
			if (titleFigure != null) {
				remove(titleFigure);
			}
			titleFigure = target;
			add(target);
		}
	}
	
	protected TrayContainerFigure mainFigure;
	
	public TrayContainerEditPart() {
		super();
	}

	@Override
	protected IFigure createFigure() {
		mainFigure = createMainFigure();
		mainFigure.setTitleFigure(createTitleFigure());
		mainFigure.setChildrenFigure(createChildrenFigure());
		return mainFigure;
	}
	
	protected TrayContainerFigure createMainFigure() {
		return new TrayContainerFigure();
	}
	
	protected IFigure createTitleFigure() {
		return new Figure();
	}
	
	protected IFigure createChildrenFigure() {
		Figure result = new Figure();
		result.setLayoutManager(new ToolbarLayout());
		return result;
	}
	
	/**
	 * Selects the EditPart that represents the given model object.
	 */
	protected EditPart selectEditPart(Object model) {
		EditPart editPart = (EditPart)getViewer().getEditPartRegistry().get(model);
		if (editPart != null) {
			getViewer().setSelection(new StructuredSelection(editPart));
		}
		return editPart;
	}
	
	protected CommandStack getCommandStack() {
		return getViewer().getEditDomain().getCommandStack();
	}
	
	public IFigure getTitleFigure() {
		return mainFigure.getTitleFigure();
	}
	
	// where children will be added
	@Override
	public IFigure getContentPane() {
		return mainFigure.getChildrenFigure();
	}
}