| /******************************************************************************* |
| * Copyright (c) 2005, 2006 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.xsd.ui.internal.refactor; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.eclipse.core.resources.IFile; |
| import org.eclipse.core.runtime.NullProgressMonitor; |
| import org.eclipse.ltk.core.refactoring.TextChange; |
| import org.eclipse.ltk.core.refactoring.TextFileChange; |
| |
| /** |
| * A <code>TextChangeManager</code> manages associations between <code>IFile</code> and <code>TextChange</code> objects. |
| */ |
| public class TextChangeManager { |
| |
| private Map fMap= new HashMap(10); // IFile -> TextChange |
| |
| private final boolean fKeepExecutedTextEdits; |
| |
| public TextChangeManager() { |
| this(false); |
| } |
| |
| public TextChangeManager(boolean keepExecutedTextEdits) { |
| fKeepExecutedTextEdits= keepExecutedTextEdits; |
| } |
| |
| /** |
| * Adds an association between the given file and the passed |
| * change to this manager. |
| * |
| * @param file the file (key) |
| * @param change the change associated with the file |
| */ |
| public void manage(IFile file, TextChange change) { |
| fMap.put(file, change); |
| } |
| |
| /** |
| * Returns the <code>TextChange</code> associated with the given file. |
| * If the manager does not already manage an association it creates a one. |
| * |
| * @param file the file for which the text buffer change is requested |
| * @return the text change associated with the given file. |
| */ |
| public TextChange get(IFile file) { |
| TextChange result= (TextChange)fMap.get(file); |
| if (result == null) { |
| result= new TextFileChange(file.toString(), file); |
| result.setKeepPreviewEdits(fKeepExecutedTextEdits); |
| result.initializeValidationData(new NullProgressMonitor()); |
| fMap.put(file, result); |
| } |
| return result; |
| } |
| |
| /** |
| * Removes the <tt>TextChange</tt> managed under the given key |
| * <code>unit<code>. |
| * |
| * @param unit the key determining the <tt>TextChange</tt> to be removed. |
| * @return the removed <tt>TextChange</tt>. |
| */ |
| public TextChange remove(IFile unit) { |
| return (TextChange)fMap.remove(unit); |
| } |
| |
| /** |
| * Returns all text changes managed by this instance. |
| * |
| * @return all text changes managed by this instance |
| */ |
| public TextChange[] getAllChanges(){ |
| return (TextChange[])fMap.values().toArray(new TextChange[fMap.values().size()]); |
| } |
| |
| /** |
| * Returns all files managed by this instance. |
| * |
| * @return all files managed by this instance |
| */ |
| public IFile[] getAllCompilationUnits(){ |
| return (IFile[]) fMap.keySet().toArray(new IFile[fMap.keySet().size()]); |
| } |
| |
| /** |
| * Clears all associations between resources and text changes. |
| */ |
| public void clear() { |
| fMap.clear(); |
| } |
| |
| /** |
| * Returns if any text changes are managed for the specified file. |
| * |
| * @param file the file |
| * @return <code>true</code> if any text changes are managed for the specified file and <code>false</code> otherwise |
| */ |
| public boolean containsChangesIn(IFile file){ |
| return fMap.containsKey(file); |
| } |
| } |
| |
| |