| /******************************************************************************* |
| * Copyright (c) 2000, 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.ltk.ui.refactoring.examples; |
| |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.core.runtime.OperationCanceledException; |
| |
| import org.eclipse.core.resources.IFile; |
| |
| import org.eclipse.core.filebuffers.FileBuffers; |
| import org.eclipse.core.filebuffers.ITextFileBuffer; |
| import org.eclipse.core.filebuffers.ITextFileBufferManager; |
| import org.eclipse.core.filebuffers.LocationKind; |
| |
| import org.eclipse.text.edits.MultiTextEdit; |
| import org.eclipse.text.edits.ReplaceEdit; |
| import org.eclipse.text.edits.TextEditGroup; |
| |
| import org.eclipse.ltk.core.refactoring.Change; |
| import org.eclipse.ltk.core.refactoring.NullChange; |
| import org.eclipse.ltk.core.refactoring.Refactoring; |
| import org.eclipse.ltk.core.refactoring.RefactoringStatus; |
| import org.eclipse.ltk.core.refactoring.TextFileChange; |
| |
| public class ExampleRefactoring extends Refactoring { |
| |
| private IFile fFile; |
| private String fOldText; |
| private String fNewText; |
| |
| private Change fChange; |
| |
| public ExampleRefactoring(IFile file) { |
| fFile= file; |
| fChange= null; |
| fOldText= null; |
| fNewText= null; |
| } |
| |
| @Override |
| public String getName() { |
| return "Make replaces"; |
| } |
| |
| public void setNewText(String text) { |
| fNewText= text; |
| } |
| |
| public void setOldText(String text) { |
| fOldText= text; |
| } |
| |
| @Override |
| public RefactoringStatus checkInitialConditions(IProgressMonitor pm) throws CoreException, OperationCanceledException { |
| if (fFile == null || !fFile.exists()) { |
| return RefactoringStatus.createFatalErrorStatus("File does not exist"); |
| } |
| return new RefactoringStatus(); |
| } |
| |
| @Override |
| public RefactoringStatus checkFinalConditions(IProgressMonitor pm) throws CoreException, OperationCanceledException { |
| if (fOldText == null || fOldText.length() == 0) { |
| return RefactoringStatus.createFatalErrorStatus("Old text must be set and not empty"); |
| } |
| if (fNewText == null || fNewText.length() == 0) { |
| return RefactoringStatus.createFatalErrorStatus("New text must be set and not empty"); |
| } |
| |
| TextFileChange change= new TextFileChange(getName(), fFile); |
| change.setEdit(new MultiTextEdit()); |
| |
| ITextFileBufferManager manager= FileBuffers.getTextFileBufferManager(); |
| manager.connect(fFile.getFullPath(), LocationKind.IFILE, null); |
| try { |
| ITextFileBuffer textFileBuffer= manager.getTextFileBuffer(fFile.getFullPath(), LocationKind.IFILE); |
| String content= textFileBuffer.getDocument().get(); |
| |
| int i= 0; |
| int count= 1; |
| while (i < content.length()) { |
| int offset= content.indexOf(fOldText, i); |
| if (offset != -1) { |
| ReplaceEdit replaceEdit= new ReplaceEdit(offset, fOldText.length(), fNewText); |
| change.addEdit(replaceEdit); |
| change.addTextEditGroup(new TextEditGroup("Change " + count++, replaceEdit)); |
| i= offset + fOldText.length(); |
| } else { |
| break; |
| } |
| } |
| if (count == 1) { |
| fChange= new NullChange(getName()); |
| return RefactoringStatus.createErrorStatus("No matches found for '" + fOldText +"'"); |
| } |
| fChange= change; |
| |
| } finally { |
| manager.disconnect(fFile.getFullPath(), LocationKind.IFILE, null); |
| } |
| return new RefactoringStatus(); |
| } |
| |
| @Override |
| public Change createChange(IProgressMonitor pm) throws CoreException, OperationCanceledException { |
| return fChange; |
| } |
| } |