DeleteSelectionHandler.java

/*
 * Copyright 2000-2017 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.command.CommandProcessor;
import com.intellij.openapi.editor.Caret;
import com.intellij.openapi.editor.CaretAction;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.editor.EditorModificationUtil;
import com.intellij.openapi.editor.actionSystem.EditorActionHandler;
import com.intellij.openapi.editor.actionSystem.EditorWriteActionHandler;
import com.intellij.openapi.editor.ex.util.EditorUIUtil;
import com.intellij.openapi.ide.CopyPasteManager;
import org.jetbrains.annotations.Nullable;

public class DeleteSelectionHandler extends EditorWriteActionHandler {
  private final EditorActionHandler myOriginalHandler;

  public DeleteSelectionHandler(EditorActionHandler handler) {myOriginalHandler = handler;}

  @Override
  public void executeWriteAction(Editor editor, @Nullable Caret caret, DataContext dataContext) {
    if (caret == null ? editor.getSelectionModel().hasSelection(true) : caret.hasSelection()) {
      EditorUIUtil.hideCursorInEditor(editor);
      CommandProcessor.getInstance().setCurrentCommandGroupId(EditorActionUtil.DELETE_COMMAND_GROUP);
      CopyPasteManager.getInstance().stopKillRings();
      CaretAction action = c -> EditorModificationUtil.deleteSelectedText(editor);
      if (caret == null) editor.getCaretModel().runForEachCaret(action);
      else action.perform(caret);
    }
    else {
      myOriginalHandler.execute(editor, caret, dataContext);
    }
  }
}