/*******************************************************************************

 * Copyright (c) 2010 Oakland Software Incorporated 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:

 *     Francis Upton IV, Oakland Software - initial API and implementation

 *******************************************************************************/

package org.eclipse.ui.internal.navigator.resources.actions;

import org.eclipse.core.resources.IFile;

import org.eclipse.core.runtime.IAdaptable;

import org.eclipse.jface.text.ITextViewerExtension8;

import org.eclipse.jface.viewers.IStructuredSelection;

import org.eclipse.swt.custom.StyledTextPrintOptions;

import org.eclipse.ui.IEditorInput;

import org.eclipse.ui.IEditorPart;

import org.eclipse.ui.IWorkbenchCommandConstants;

import org.eclipse.ui.PlatformUI;

import org.eclipse.ui.actions.SelectionListenerAction;

import org.eclipse.ui.navigator.ICommonActionExtensionSite;

import org.eclipse.ui.part.FileEditorInput;

import org.eclipse.ui.texteditor.AbstractTextEditor;

import org.eclipse.ui.texteditor.IAbstractTextEditorHelpContextIds;

/**

 * 

 */

/* package */class PrintAction extends SelectionListenerAction {

	private ITextViewerExtension8 textViewer;

	private AbstractTextEditor textEditor;

	/**

	 * @param aSite  

	 */

	public PrintAction(ICommonActionExtensionSite aSite) {

		// Text does not matter since this is just for the handler

		super(""); //$NON-NLS-1$

		setActionDefinitionId(IWorkbenchCommandConstants.FILE_PRINT);

		PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IAbstractTextEditorHelpContextIds.PRINT_ACTION);

	}

	public void run() {

		// FINISHME - is this right?

		StyledTextPrintOptions options= new StyledTextPrintOptions();

		options.printTextFontStyle= true;

		options.printTextForeground= true;

		options.printTextBackground= true;

		options.jobName= textEditor.getTitle();

		textViewer.print(options);

	}

	protected boolean updateSelection(IStructuredSelection sel) {

		if (!super.updateSelection(sel)) {

			return false;

		}

		Object obj = sel.getFirstElement();

		IFile file = null;

		if (obj instanceof IFile) {

			file = (IFile) obj;

		} else if (obj instanceof IAdaptable) {

			file = (IFile) ((IAdaptable) obj).getAdapter(IFile.class);

		}

		if (file != null) {

			IEditorInput fileInput = new FileEditorInput(file);

			IEditorPart editor = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().findEditor(

					fileInput);

			if (editor == null)

				return false;

			if (editor instanceof AbstractTextEditor) {

				textEditor = (AbstractTextEditor) editor;

				// FINISHME - need to know how to get the text viewer

				Object sv = null;

				if ((sv instanceof ITextViewerExtension8))

					return false;

				textViewer = (ITextViewerExtension8) sv;

				return true;

			}

		}

		return false;

	}

}

	private PrintAction printAction;

		actionBars.setGlobalActionHandler(ActionFactory.PRINT.getId(), printAction);

		printAction = new PrintAction(getActionSite());

		printAction.selectionChanged(selection);