| /* |
| * 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.actionSystem.IdeActions; |
| import com.intellij.openapi.editor.Caret; |
| import com.intellij.openapi.editor.Editor; |
| import com.intellij.openapi.editor.EditorLastActionTracker; |
| import com.intellij.openapi.editor.ScrollType; |
| import com.intellij.openapi.editor.actionSystem.EditorActionHandler; |
| import com.intellij.openapi.util.Key; |
| import com.intellij.util.containers.HashSet; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.Set; |
| |
| public class CloneCaretActionHandler extends EditorActionHandler { |
| private static final Key<Integer> LEVEL = Key.create("CloneCaretActionHandler.level"); |
| |
| private static final Set<String> OUR_ACTIONS = new HashSet<String>(Arrays.asList( |
| IdeActions.ACTION_EDITOR_CLONE_CARET_ABOVE, |
| IdeActions.ACTION_EDITOR_CLONE_CARET_BELOW, |
| IdeActions.ACTION_EDITOR_MOVE_CARET_LEFT_WITH_SELECTION, |
| IdeActions.ACTION_EDITOR_MOVE_CARET_RIGHT_WITH_SELECTION |
| )); |
| |
| private final boolean myCloneAbove; |
| |
| public CloneCaretActionHandler(boolean above) { |
| myCloneAbove = above; |
| } |
| |
| @Override |
| public boolean isEnabled(Editor editor, DataContext dataContext) { |
| return editor.getCaretModel().supportsMultipleCarets(); |
| } |
| |
| @Override |
| protected void doExecute(Editor editor, @Nullable Caret targetCaret, DataContext dataContext) { |
| if (targetCaret != null) { |
| targetCaret.clone(myCloneAbove); |
| return; |
| } |
| int currentLevel = 0; |
| List<Caret> currentCarets = new ArrayList<Caret>(); |
| for (Caret caret : editor.getCaretModel().getAllCarets()) { |
| int level = getLevel(caret); |
| if (Math.abs(level) > Math.abs(currentLevel)) { |
| currentLevel = level; |
| currentCarets.clear(); |
| } |
| if (Math.abs(level) == Math.abs(currentLevel)) { |
| currentCarets.add(caret); |
| } |
| } |
| boolean removeCarets = currentLevel > 0 && myCloneAbove || currentLevel < 0 && !myCloneAbove; |
| Integer newLevel = myCloneAbove ? currentLevel - 1 : currentLevel + 1; |
| for (Caret caret : currentCarets) { |
| if (removeCarets) { |
| editor.getCaretModel().removeCaret(caret); |
| } |
| else { |
| Caret clone = caret; |
| do { |
| Caret original = clone; |
| clone = clone.clone(myCloneAbove); |
| if (original != caret) { |
| editor.getCaretModel().removeCaret(original); |
| } |
| } while (clone != null && caret.hasSelection() && !clone.hasSelection()); |
| if (clone != null) { |
| clone.putUserData(LEVEL, newLevel); |
| } |
| } |
| } |
| if (removeCarets) { |
| editor.getScrollingModel().scrollToCaret(ScrollType.RELATIVE); |
| } |
| } |
| |
| private static int getLevel(Caret caret) { |
| if (isRepeatedActionInvocation()) { |
| Integer value = caret.getUserData(LEVEL); |
| return value == null ? 0 : value; |
| } |
| else { |
| caret.putUserData(LEVEL, null); |
| return 0; |
| } |
| } |
| |
| private static boolean isRepeatedActionInvocation() { |
| String lastActionId = EditorLastActionTracker.getInstance().getLastActionId(); |
| return OUR_ACTIONS.contains(lastActionId); |
| } |
| } |