| /* |
| * Copyright 2000-2009 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.intellij.openapi.command.impl; |
| |
| import com.intellij.openapi.command.undo.BasicUndoableAction; |
| import com.intellij.openapi.editor.event.DocumentEvent; |
| import com.intellij.openapi.editor.ex.DocumentEx; |
| import com.intellij.openapi.fileEditor.FileDocumentManager; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.openapi.project.ProjectManager; |
| import com.intellij.openapi.vcs.FileStatusManager; |
| import com.intellij.openapi.vcs.impl.FileStatusManagerImpl; |
| import com.intellij.openapi.vfs.VirtualFile; |
| import com.intellij.openapi.vfs.encoding.EncodingManager; |
| import com.intellij.testFramework.LightVirtualFile; |
| import org.jetbrains.annotations.NonNls; |
| import org.jetbrains.annotations.NotNull; |
| |
| import java.nio.charset.Charset; |
| |
| import static com.intellij.util.CompressionUtil.compressCharSequence; |
| import static com.intellij.util.CompressionUtil.uncompressCharSequence; |
| |
| public class EditorChangeAction extends BasicUndoableAction { |
| private final int myOffset; |
| private final Object myOldString; |
| private final Object myNewString; |
| private final long myOldTimeStamp; |
| private final long myNewTimeStamp; |
| @NotNull private final Charset myCharset; |
| |
| public EditorChangeAction(DocumentEvent e) { |
| this((DocumentEx)e.getDocument(), e.getOffset(), e.getOldFragment(), e.getNewFragment(), e.getOldTimeStamp()); |
| } |
| |
| public EditorChangeAction(@NotNull DocumentEx document, |
| int offset, |
| CharSequence oldString, |
| CharSequence newString, |
| long oldTimeStamp) { |
| super(document); |
| |
| Charset charset = EncodingManager.getInstance().getEncoding(FileDocumentManager.getInstance().getFile(document), true); |
| if (charset == null) charset = EncodingManager.getInstance().getDefaultCharset(); |
| if (charset == null) charset = Charset.defaultCharset(); |
| myCharset = charset; |
| |
| myOffset = offset; |
| myOldString = oldString == null ? "" : compressCharSequence(oldString, myCharset); |
| myNewString = newString == null ? "" : compressCharSequence(newString, myCharset); |
| myOldTimeStamp = oldTimeStamp; |
| myNewTimeStamp = document.getModificationStamp(); |
| } |
| |
| public void undo() { |
| DocumentUndoProvider.startDocumentUndo(getDocument()); |
| try { |
| performUndo(); |
| } |
| finally { |
| DocumentUndoProvider.finishDocumentUndo(getDocument()); |
| } |
| |
| getDocument().setModificationStamp(myOldTimeStamp); |
| refreshFileStatus(); |
| } |
| |
| public void performUndo() { |
| exchangeStrings(uncompressCharSequence(myNewString, myCharset), uncompressCharSequence(myOldString, myCharset)); |
| } |
| |
| public void redo() { |
| DocumentUndoProvider.startDocumentUndo(getDocument()); |
| try { |
| exchangeStrings(uncompressCharSequence(myOldString, myCharset), uncompressCharSequence(myNewString, myCharset)); |
| } |
| finally { |
| DocumentUndoProvider.finishDocumentUndo(getDocument()); |
| } |
| getDocument().setModificationStamp(myNewTimeStamp); |
| refreshFileStatus(); |
| } |
| |
| private void exchangeStrings(CharSequence newString, CharSequence oldString) { |
| DocumentEx d = getDocument(); |
| |
| if (newString.length() > 0 && oldString.length() == 0) { |
| d.deleteString(myOffset, myOffset + newString.length()); |
| } |
| else if (oldString.length() > 0 && newString.length() == 0) { |
| d.insertString(myOffset, oldString); |
| } |
| else if (oldString.length() > 0 && newString.length() > 0) { |
| d.replaceString(myOffset, myOffset + newString.length(), oldString); |
| } |
| } |
| |
| private void refreshFileStatus() { |
| VirtualFile f = getAffectedDocuments()[0].getFile(); |
| if (f == null || f instanceof LightVirtualFile) return; |
| |
| for (Project each : ProjectManager.getInstance().getOpenProjects()) { |
| FileStatusManagerImpl statusManager = (FileStatusManagerImpl)FileStatusManager.getInstance(each); |
| statusManager.refreshFileStatusFromDocument(f, getDocument()); |
| } |
| } |
| |
| |
| private DocumentEx getDocument() { |
| return (DocumentEx)getAffectedDocuments()[0].getDocument(); |
| } |
| |
| @NonNls |
| public String toString() { |
| return "editor change: '" + myOldString + "' to '" + myNewString + "'" + " at: " + myOffset; |
| } |
| } |
| |