platform/platform-impl/src/com/intellij/ide/actions/PasteAction.java

/*
 * 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.ide.actions;

import com.intellij.ide.PasteProvider;
import com.intellij.openapi.actionSystem.*;
import com.intellij.openapi.project.DumbAware;

public class PasteAction extends AnAction implements DumbAware {

  public void update(AnActionEvent event) {
    Presentation presentation = event.getPresentation();
    DataContext dataContext = event.getDataContext();

    PasteProvider provider = PlatformDataKeys.PASTE_PROVIDER.getData(dataContext);
    presentation.setEnabled(provider != null && provider.isPastePossible(dataContext));
    if (event.getPlace().equals(ActionPlaces.EDITOR_POPUP) && provider != null) {
      presentation.setVisible(presentation.isEnabled());
    }
    else {
      presentation.setVisible(true);
    }
  }

  public void actionPerformed(AnActionEvent e) {
    DataContext dataContext = e.getDataContext();
    PasteProvider provider = PlatformDataKeys.PASTE_PROVIDER.getData(dataContext);
    if (provider != null && provider.isPasteEnabled(dataContext)) {
      provider.performPaste(dataContext);
    }
  }
}