/*******************************************************************************
 * Copyright (c) 2008 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.papyrus.uml.diagram.wizards;

import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.wizard.WizardDialog;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IObjectActionDelegate;
import org.eclipse.ui.IWorkbenchPart;

/**
 * This action initialize the "CreateModelWizard" with the selected domain file,
 * and launch the wizard to create Diagram Interchange resources required by
 * Papyrus editor.
 * 
 * @author <a href="mailto:jerome.benois@obeo.fr">Jerome Benois</a>
 */
public abstract class InitDiagramAction implements IObjectActionDelegate {

	/** The active part. */
	private IWorkbenchPart targetPart;

	/** The current selection;. */
	IStructuredSelection mySelection;

	/**
	 * Sets the active part.
	 *
	 * @param action the action
	 * @param targetPart the target part
	 * {@inheritDoc}
	 */
	public void setActivePart(IAction action, IWorkbenchPart targetPart) {
		this.targetPart = targetPart;
	}

	/**
	 * Selection changed.
	 *
	 * @param action the action
	 * @param selection the selection
	 * {@inheritDoc}
	 */
	public void selectionChanged(IAction action, ISelection selection) {
		IStructuredSelection sselection = (IStructuredSelection)selection;
		mySelection = sselection;
		action.setEnabled(InitModelWizard.isSupportedDomainModelFile(sselection));
	}

	/**
	 * Gets the shell.
	 *
	 * @return the current Shell to display dialog
	 */
	private Shell getShell() {
		return targetPart.getSite().getShell();
	}

	/**
	 * Run.
	 *
	 * @param action the action
	 * {@inheritDoc}
	 */
	public void run(IAction action) {
		InitModelWizard wizard = new InitModelWizard();
		wizard.init(targetPart.getSite().getWorkbenchWindow().getWorkbench(), mySelection);
		WizardDialog dialog = new WizardDialog(getShell(), wizard);
		dialog.create();
		dialog.getShell().setSize(Math.max(500, dialog.getShell().getSize().x), 500);
		dialog.open();
	}

}