/*******************************************************************************
 * Copyright (c) 2008 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.wst.xml.ui.internal.hyperlink;

import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;

import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
import org.eclipse.jface.text.IRegion;
import org.eclipse.jface.text.hyperlink.IHyperlink;
import org.eclipse.osgi.util.NLS;
import org.eclipse.wst.xml.core.internal.catalog.provisional.ICatalogEntry;
import org.eclipse.wst.xml.ui.internal.XMLUIMessages;

class CatalogEntryHyperlink implements IHyperlink {

	private IRegion fHyperlinkRegion = null;
	private ICatalogEntry fEntry = null;

	/**
	 * @param hyperlinkRegion
	 * @param entry
	 */
	CatalogEntryHyperlink(IRegion hyperlinkRegion, ICatalogEntry entry) {
		super();
		fHyperlinkRegion = hyperlinkRegion;
		fEntry = entry;
	}

	/**
	 * @return
	 */
	private IHyperlink getHyperlink() {
		if (fEntry.getURI().startsWith("file:")) { //$NON-NLS-1$
			return new ExternalFileHyperlink(fHyperlinkRegion, new File(fEntry.getURI().substring(5)));
		}
		else if (fEntry.getURI().startsWith("platform:/resource/")) { //$NON-NLS-1$
			IPath path = new Path(fEntry.getURI().substring(20));
			if (path.segmentCount() > 1)
				return new WorkspaceFileHyperlink(fHyperlinkRegion, ResourcesPlugin.getWorkspace().getRoot().getFile(path));
		}
		else {
			/*
			 * the URL detector will already work on the literal text, so
			 * offer to open the contents in an editor
			 */
			try {
				if (fEntry.getURI().startsWith("jar:file:"))
					return new URLStorageHyperlink(fHyperlinkRegion, new URL(fEntry.getURI())) {
						public String getHyperlinkText() {
							return NLS.bind(XMLUIMessages.Open, fEntry.getKey());
						}
					};
			}
			catch (MalformedURLException e) {
				// not valid?
			}
		}
		return null;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.jface.text.hyperlink.IHyperlink#getHyperlinkRegion()
	 */
	public IRegion getHyperlinkRegion() {
		return fHyperlinkRegion;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.jface.text.hyperlink.IHyperlink#getHyperlinkText()
	 */
	public String getHyperlinkText() {
		IHyperlink link = getHyperlink();
		if (link != null)
			return link.getHyperlinkText();
		return NLS.bind(XMLUIMessages.Open, fEntry.getKey());
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.jface.text.hyperlink.IHyperlink#getTypeLabel()
	 */
	public String getTypeLabel() {
		IHyperlink link = getHyperlink();
		if (link != null)
			return link.getTypeLabel();
		return null;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.jface.text.hyperlink.IHyperlink#open()
	 */
	public void open() {
		IHyperlink link = getHyperlink();
		if (link != null)
			link.open();
	}
}