/*******************************************************************************
 * Copyright (c) 2001, 2004 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
 *     Jens Lukowski/Innoopract - initial renaming/restructuring
 *     
 *******************************************************************************/
package org.eclipse.wst.dtd.core.internal;

import java.text.MessageFormat;
import java.util.ResourceBundle;

import org.eclipse.core.runtime.Platform;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.resource.ImageRegistry;
import org.eclipse.swt.graphics.Image;
import org.eclipse.ui.plugin.AbstractUIPlugin;

public class DTDCorePlugin extends AbstractUIPlugin {
	private static DTDCorePlugin instance;

	public static Image getDTDImage(String iconName) {
		return getInstance().getImage(iconName);
	}

	public static ImageDescriptor getDTDImageDescriptor(String iconName) {
		String thisID = getInstance().getBundle().getSymbolicName();
		return AbstractUIPlugin.imageDescriptorFromPlugin(thisID, iconName);
	}

	public static String getDTDString(String key) {
		// In case it is invoked from a command line
		if (getInstance() == null) {
			return ""; //$NON-NLS-1$
		}

		return getInstance().getString(key);
	}

	public synchronized static DTDCorePlugin getInstance() {
		return instance;
	}

	public static DTDCorePlugin getPlugin() {
		return instance;
	}

	private ResourceBundle resourceBundle;

	public DTDCorePlugin() {
		super();
		instance = this;
	}

	public Image getImage(String iconName) {
		ImageRegistry imageRegistry = getImageRegistry();
		Image image = imageRegistry.get(iconName);

		if (image == null) {
			String thisID = getInstance().getBundle().getSymbolicName();
			imageRegistry.put(iconName, imageDescriptorFromPlugin(thisID, iconName));
			image = imageRegistry.get(iconName);
		}

		return image;
	}

	public ResourceBundle getResourceBundle() {
		if (resourceBundle == null) {
			try {
				resourceBundle = Platform.getResourceBundle(getBundle());
			}
			catch (java.util.MissingResourceException exception) {
			}
		}
		return resourceBundle;
	}

	/**
	 * This gets the string resource.
	 */
	public String getString(String key) {
		return getResourceBundle().getString(key);
	}

	/**
	 * This gets the string resource and does one substitution.
	 */
	public String getString(String key, Object s1) {
		return MessageFormat.format(getString(key), new Object[]{s1});
	}

	/**
	 * This gets the string resource and does two substitutions.
	 */
	public String getString(String key, Object s1, Object s2) {
		return MessageFormat.format(getString(key), new Object[]{s1, s2});
	}
}