/*******************************************************************************
 * Copyright (c) 2000, 2005 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.jdt.text.tests;

import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;

import org.eclipse.jface.preference.PreferenceStore;

import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.Document;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.IDocumentPartitioner;
import org.eclipse.jface.text.IDocumentPartitioningListener;
import org.eclipse.jface.text.IDocumentPartitioningListenerExtension;
import org.eclipse.jface.text.IRegion;
import org.eclipse.jface.text.ITypedRegion;

import org.eclipse.jdt.ui.text.JavaTextTools;


public class JavaPartitionerExtensionTest extends TestCase {
	
	
	class PartitioningListener implements IDocumentPartitioningListener, IDocumentPartitioningListenerExtension {
		/*
		 * @see IDocumentPartitioningListener#documentPartitioningChanged(IDocument)
		 */
		public void documentPartitioningChanged(IDocument document) {
			fDocumentPartitioningChanged= true;
		}

		/*
		 * @see IDocumentPartitioningListenerExtension#documentPartitioningChanged(IDocument, IRegion)
		 */
		public void documentPartitioningChanged(IDocument document, IRegion region) {
			fDocumentPartitioningChanged= true;
			fChangedDocumentPartitioning= region;
		}
	}
	
	private JavaTextTools fTextTools;
	private Document fDocument;
	protected boolean fDocumentPartitioningChanged;
	protected IRegion fChangedDocumentPartitioning;
	
	
	public JavaPartitionerExtensionTest(String name) {
		super(name);
	}
	
	protected void setUp() {

		fTextTools= new JavaTextTools(new PreferenceStore());
		
		fDocument= new Document();
		IDocumentPartitioner partitioner= fTextTools.createDocumentPartitioner();
		partitioner.connect(fDocument);
		fDocument.setDocumentPartitioner(partitioner);
		
		fDocumentPartitioningChanged= false;
		fChangedDocumentPartitioning= null;
		fDocument.addDocumentPartitioningListener(new PartitioningListener());
	}
	
	public static Test suite() {
		return new TestSuite(JavaPartitionerExtensionTest.class); 
	}
	
	protected void tearDown () {
		fTextTools.dispose();
		fTextTools= null;
		
		IDocumentPartitioner partitioner= fDocument.getDocumentPartitioner();
		partitioner.disconnect();
		fDocument= null;
	}


	protected String print(ITypedRegion r) {
		return r != null ? "[" + r.getOffset() + "," + r.getLength() + "," + r.getType() + "]" : "null";
	}
	
	protected String print(IRegion r) {
		return r != null ? "[" + r.getOffset() + "," + r.getLength() + "]" : "null";
	}	
	
	protected void check(int offset, int length) {
		assertTrue(fDocumentPartitioningChanged);
		assertNotNull(fChangedDocumentPartitioning);
		assertTrue(fChangedDocumentPartitioning.getOffset() == offset);
		assertTrue(fChangedDocumentPartitioning.getLength() == length);
		
		fDocumentPartitioningChanged= false;
		fChangedDocumentPartitioning= null;
	}
	
	protected void check() {
		assertTrue(!fDocumentPartitioningChanged);
		assertTrue(fChangedDocumentPartitioning == null);
	}
	
	public void testConvertPartition() {
		
		try {
			fDocument.set("/*xxx*/");
			check(0, 7);
			fDocument.replace(0,0,"//");
			check(0, 9);
		} catch (BadLocationException x) {
			assertTrue(false);
		}
	}	
	
	public void testTransformPartition() {
		
		try {
			fDocument.set("/*\nx\nx\nx\n*/");
			check(0, 11);
			fDocument.replace(0,0,"//");
			check(0, 13);
		} catch (BadLocationException x) {
			assertTrue(false);
		}
	}
	
	public void testToggleMultiPartition() {
		
		try {
			fDocument.set("/*\nCode version 1\n/*/\nCode version 2\n//*/");
			check(0, 41);
			fDocument.replace(0,0,"//");
			check(0, 43);
		} catch (BadLocationException x) {
			assertTrue(false);
		}
	}
	
	public void testSplitPartition() {
		try {
			fDocument.set("class X {}");
			check();
			fDocument.replace(9, 0, "/**/");
			check(9, 4);
		} catch (BadLocationException x) {
			assertTrue(false);
		}
	}
	
	public void testShortenDocument() {
		try {
			fDocument.set("class x {\n/***/\n}");
			check(10, 5);
			fDocument.replace(0, fDocument.getLength(), "/**/");
			check(0, 4);
		} catch (BadLocationException x) {
			assertTrue(false);
		}
	}
	
	public void testDeletePartition() {
		try {
			fDocument.set("class x {\n/***/\n}");
			check(10, 5);
			fDocument.replace(10, 5,  null);
			check(10, 0);
		} catch (BadLocationException x) {
			assertTrue(false);
		}
	}
	
	public void testDeletePartition2() {
		try {
			fDocument.set("class x {\n/***/\n}");
			check(10, 5);
			fDocument.replace(10, 7,  null);
			check(10, 0);
		} catch (BadLocationException x) {
			assertTrue(false);
		}
	}	
}