/*******************************************************************************
 * Copyright (c) 2009 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
 *     Zend Technologies
 *******************************************************************************/
package org.eclipse.php.internal.ui.text.template.contentassist;

import java.io.IOException;
import java.io.StringReader;

import org.eclipse.core.runtime.Assert;
import org.eclipse.dltk.internal.ui.text.HTML2TextReader;
import org.eclipse.jface.text.IInformationControl;
import org.eclipse.jface.text.IInformationControlCreator;
import org.eclipse.jface.text.IInformationControlCreatorExtension;
import org.eclipse.jface.text.TextPresentation;
import org.eclipse.php.internal.ui.editor.hover.PHPSourceViewerInformationControl;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.widgets.Shell;

//import org.eclipse.jdt.internal.ui.JavaPlugin;
//import org.eclipse.jdt.internal.ui.text.java.hover.SourceViewerInformationControl;

public final class TemplateInformationControlCreator
		implements IInformationControlCreator, IInformationControlCreatorExtension {

	private PHPSourceViewerInformationControl fControl;

	/**
	 * The orientation to be used by this hover. Allowed values are:
	 * SWT#RIGHT_TO_LEFT or SWT#LEFT_TO_RIGHT
	 * 
	 * @since 3.2
	 */
	private int fOrientation;

	/**
	 * @param orientation
	 *            the orientation, allowed values are: SWT#RIGHT_TO_LEFT or
	 *            SWT#LEFT_TO_RIGHT
	 */
	public TemplateInformationControlCreator(int orientation) {
		Assert.isLegal(orientation == SWT.RIGHT_TO_LEFT || orientation == SWT.LEFT_TO_RIGHT);
		fOrientation = orientation;
	}

	/*
	 * @see org.eclipse.jface.text.IInformationControlCreator#
	 * createInformationControl (org.eclipse.swt.widgets.Shell)
	 */
	@Override
	public IInformationControl createInformationControl(Shell parent) {
		fControl = new PHPSourceViewerInformationControl(parent, fOrientation) {
			@Override
			public void setInformation(String content) {
				TextPresentation presentation = new TextPresentation();
				HTML2TextReader reader = new HTML2TextReader(new StringReader(content), presentation);
				try {
					super.setInformation(reader.getString());
				} catch (IOException e) {
				}
			}
		};
		fControl.addDisposeListener(new DisposeListener() {
			@Override
			public void widgetDisposed(DisposeEvent e) {
				fControl = null;
			}
		});
		return fControl;
	}

	/*
	 * @see
	 * org.eclipse.jface.text.IInformationControlCreatorExtension#canReuse(org
	 * .eclipse.jface.text.IInformationControl)
	 */
	@Override
	public boolean canReuse(IInformationControl control) {
		return fControl == control && fControl != null;
	}

	/*
	 * @see
	 * org.eclipse.jface.text.IInformationControlCreatorExtension#canReplace
	 * (org.eclipse.jface.text.IInformationControlCreator)
	 */
	@Override
	public boolean canReplace(IInformationControlCreator creator) {
		return (creator != null && getClass() == creator.getClass());
	}
}