/*
* Copyright 2000-2015 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.formatting.engine;
import com.intellij.openapi.editor.Document;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.editor.EditorFactory;
import com.intellij.openapi.editor.TextChange;
import com.intellij.openapi.editor.impl.BulkChangesMerger;
import org.jetbrains.annotations.NotNull;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class CaretOffsetUpdater {
private final Map<Editor, Integer> myCaretOffsets = new HashMap<>();
public CaretOffsetUpdater(@NotNull Document document) {
Editor[] editors = EditorFactory.getInstance().getEditors(document);
for (Editor editor : editors) {
myCaretOffsets.put(editor, editor.getCaretModel().getOffset());
}
}
public void update(@NotNull List<? extends TextChange> changes) {
BulkChangesMerger merger = BulkChangesMerger.INSTANCE;
for (Map.Entry<Editor, Integer> entry : myCaretOffsets.entrySet()) {
entry.setValue(merger.updateOffset(entry.getValue(), changes));
}
}
public void restoreCaretLocations() {
for (Map.Entry<Editor, Integer> entry : myCaretOffsets.entrySet()) {
entry.getKey().getCaretModel().moveToOffset(entry.getValue());
}
}
}