| /* |
| * Copyright 2000-2014 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.editor.actions; |
| |
| import com.intellij.openapi.actionSystem.DataContext; |
| import com.intellij.openapi.editor.CaretModel; |
| import com.intellij.openapi.editor.Editor; |
| import com.intellij.openapi.editor.SelectionModel; |
| import com.intellij.openapi.editor.actionSystem.EditorAction; |
| import com.intellij.openapi.editor.actionSystem.EditorActionHandler; |
| import com.intellij.openapi.editor.ex.EditorEx; |
| |
| /** |
| * Provides functionality similar to the emacs |
| * <a href="http://www.gnu.org/software/emacs/manual/html_node/emacs/Setting-Mark.html">exchange-point-and-mark</a>. |
| * |
| * @author Denis Zhdanov |
| * @since 3/18/12 3:14 PM |
| */ |
| public class SwapSelectionBoundariesAction extends EditorAction { |
| |
| public SwapSelectionBoundariesAction() { |
| super(new Handler()); |
| } |
| |
| private static class Handler extends EditorActionHandler { |
| public Handler() { |
| super(true); |
| } |
| |
| @Override |
| public void execute(Editor editor, DataContext dataContext) { |
| if (!(editor instanceof EditorEx)) { |
| return; |
| } |
| final SelectionModel selectionModel = editor.getSelectionModel(); |
| if (!selectionModel.hasSelection()) { |
| return; |
| } |
| |
| EditorEx editorEx = (EditorEx)editor; |
| final int start = selectionModel.getSelectionStart(); |
| final int end = selectionModel.getSelectionEnd(); |
| final CaretModel caretModel = editor.getCaretModel(); |
| boolean moveToEnd = caretModel.getOffset() == start; |
| editorEx.setStickySelection(false); |
| editorEx.setStickySelection(true); |
| if (moveToEnd) { |
| caretModel.moveToOffset(end); |
| } |
| else { |
| caretModel.moveToOffset(start); |
| } |
| } |
| } |
| } |