| /* |
| * 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.diff.impl.util; |
| |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.openapi.diff.impl.incrementalMerge.ui.EditorPlace; |
| import com.intellij.openapi.editor.Editor; |
| import com.intellij.openapi.editor.ex.EditorEx; |
| import com.intellij.util.containers.HashSet; |
| |
| import java.beans.PropertyChangeEvent; |
| import java.beans.PropertyChangeListener; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| |
| public class FontSizeSynchronizer { |
| private static final Logger LOG = Logger.getInstance("#com.intellij.openapi.diff.impl.util.FontSizeSynchronizer"); |
| private final Collection<Editor> myEditors = new HashSet<Editor>(); |
| private final MyFontSizeListener myFontSizeListener = new MyFontSizeListener(); |
| private int myLastFontSize = -1; |
| |
| public void synchronize(EditorEx editor) { |
| LOG.assertTrue(!myEditors.contains(editor)); |
| editor.addPropertyChangeListener(myFontSizeListener); |
| myEditors.add(editor); |
| if (myLastFontSize != -1) myFontSizeListener.updateEditor(editor); |
| } |
| |
| public void stopSynchronize(EditorEx editor) { |
| LOG.assertTrue(myEditors.contains(editor)); |
| editor.removePropertyChangeListener(myFontSizeListener); |
| myEditors.remove(editor); |
| } |
| |
| public static void attachTo(ArrayList<EditorPlace> editorPlaces) { |
| final FontSizeSynchronizer synchronizer = new FontSizeSynchronizer(); |
| for (EditorPlace editorPlace : editorPlaces) { |
| editorPlace.addListener(new EditorPlace.EditorListener() { |
| public void onEditorCreated(EditorPlace place) { |
| synchronizer.synchronize((EditorEx)place.getEditor()); |
| } |
| |
| public void onEditorReleased(Editor releasedEditor) { |
| synchronizer.stopSynchronize((EditorEx)releasedEditor); |
| } |
| }); |
| EditorEx editor = (EditorEx)editorPlace.getEditor(); |
| if (editor != null) synchronizer.synchronize(editor); |
| } |
| |
| } |
| |
| private class MyFontSizeListener implements PropertyChangeListener { |
| private boolean myDuringUpdate = false; |
| public void propertyChange(PropertyChangeEvent evt) { |
| if (myDuringUpdate) return; |
| if (!EditorEx.PROP_FONT_SIZE.equals(evt.getPropertyName())) return; |
| if (evt.getOldValue().equals(evt.getNewValue())) return; |
| myLastFontSize = ((Integer)evt.getNewValue()).intValue(); |
| for (Editor editor : myEditors) { |
| if (editor == null || editor == evt.getSource()) continue; |
| updateEditor((EditorEx)editor); |
| } |
| } |
| |
| public void updateEditor(EditorEx editor) { |
| try { |
| myDuringUpdate = true; |
| editor.setFontSize(myLastFontSize); |
| } finally { |
| myDuringUpdate = false; |
| } |
| } |
| } |
| } |