org.eclipse.ui.examples.javaeditor/Eclipse Java Editor Example/org/eclipse/ui/examples/javaeditor/JavaEditorExamplePlugin.java

/**********************************************************************
Copyright (c) 2000, 2003 IBM Corp. and others.
All rights reserved. This program and the accompanying materials
are made available under the terms of the Common Public License v1.0
which accompanies this distribution, and is available at
http://www.eclipse.org/legal/cpl-v10.html

Contributors:
	IBM Corporation - Initial implementation
**********************************************************************/
package org.eclipse.ui.examples.javaeditor;

import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPluginDescriptor;

import org.eclipse.jface.text.rules.RuleBasedScanner;

import org.eclipse.ui.examples.javaeditor.java.JavaCodeScanner;
import org.eclipse.ui.examples.javaeditor.javadoc.JavaDocScanner;
import org.eclipse.ui.examples.javaeditor.util.JavaColorProvider;
import org.eclipse.ui.plugin.AbstractUIPlugin;

/**
 * The example java editor plugin class.
 * 
 * @since 3.0
 */
public class JavaEditorExamplePlugin extends AbstractUIPlugin {
	
	public final static String JAVA_PARTITIONING= "__java_example_partitioning";   //$NON-NLS-1$
	
	private static JavaEditorExamplePlugin fgInstance;
	private JavaPartitionScanner fPartitionScanner;
	private JavaColorProvider fColorProvider;
	private JavaCodeScanner fCodeScanner;
	private JavaDocScanner fDocScanner;

	/**
	 * Creates a new plugin instance.
	 * 
	 * @param descriptor
	 */
	public JavaEditorExamplePlugin(IPluginDescriptor descriptor) {
		super(descriptor);
		fgInstance= this;
	}
	
	/**
	 * Returns the default plugin instance.
	 * 
	 * @return the default plugin instance
	 */
	public static JavaEditorExamplePlugin getDefault() {
		return fgInstance;
	}
	
	/*
	 * @see org.eclipse.ui.plugin.AbstractUIPlugin#shutdown()
	 */
	public void shutdown() throws CoreException {
		super.shutdown();
	}
	
	/**
	 * Return a scanner for creating java partitions.
	 */
	 public JavaPartitionScanner getJavaPartitionScanner() {
		if (fPartitionScanner == null)
			fPartitionScanner= new JavaPartitionScanner();
		return fPartitionScanner;
	}
	
	/**
	 * Returns the singleton scanner.
	 */
	 public RuleBasedScanner getJavaCodeScanner() {
	 	if (fCodeScanner == null)
			fCodeScanner= new JavaCodeScanner(getJavaColorProvider());
		return fCodeScanner;
	}
	
	/**
	 * Returns the singleton color provider.
	 */
	 public JavaColorProvider getJavaColorProvider() {
	 	if (fColorProvider == null)
			fColorProvider= new JavaColorProvider();
		return fColorProvider;
	}
	
	/**
	 * Returns the singleton document scanner.
	 */
	 public RuleBasedScanner getJavaDocScanner() {
	 	if (fDocScanner == null)
			fDocScanner= new JavaDocScanner(fColorProvider);
		return fDocScanner;
	}
}