/*******************************************************************************
 * Copyright (c) 2000, 2010 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.gef.ui.actions;

import org.eclipse.swt.SWT;
import org.eclipse.swt.printing.PrintDialog;
import org.eclipse.swt.printing.Printer;
import org.eclipse.swt.printing.PrinterData;

import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.actions.ActionFactory;

import org.eclipse.gef.GraphicalViewer;
import org.eclipse.gef.internal.GEFMessages;
import org.eclipse.gef.print.PrintGraphicalViewerOperation;

/**
 * @author hudsonr
 * @since 2.1
 */
public class PrintAction extends WorkbenchPartAction {

	/**
	 * Constructor for PrintAction.
	 * 
	 * @param part
	 *            The workbench part associated with this PrintAction
	 */
	public PrintAction(IWorkbenchPart part) {
		super(part);
	}

	/**
	 * @see org.eclipse.gef.ui.actions.WorkbenchPartAction#calculateEnabled()
	 */
	protected boolean calculateEnabled() {
		PrinterData[] printers = Printer.getPrinterList();
		return printers != null && printers.length > 0;
	}

	/**
	 * @see org.eclipse.gef.ui.actions.EditorPartAction#init()
	 */
	protected void init() {
		super.init();
		setText(GEFMessages.PrintAction_Label);
		setToolTipText(GEFMessages.PrintAction_Tooltip);
		setId(ActionFactory.PRINT.getId());
	}

	/**
	 * @see org.eclipse.jface.action.Action#run()
	 */
	public void run() {
		GraphicalViewer viewer;
		viewer = (GraphicalViewer) getWorkbenchPart().getAdapter(
				GraphicalViewer.class);

		PrintDialog dialog = new PrintDialog(viewer.getControl().getShell(),
				SWT.NULL);
		PrinterData data = dialog.open();

		if (data != null) {
			PrintGraphicalViewerOperation op = new PrintGraphicalViewerOperation(
					new Printer(data), viewer);
			op.run(getWorkbenchPart().getTitle());
		}
	}

}