Java tutorial
/* * 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 ru.scratch; import com.intellij.openapi.actionSystem.AnActionEvent; import com.intellij.openapi.actionSystem.PlatformDataKeys; import com.intellij.openapi.fileEditor.OpenFileDescriptor; import com.intellij.openapi.project.DumbAwareAction; import com.intellij.openapi.project.Project; import com.intellij.openapi.vfs.VirtualFile; /** * @author Dmitry Kandalov */ public class OpenScratchAction extends DumbAwareAction { @Override public void actionPerformed(AnActionEvent event) { Project project = projectFor(event); VirtualFile defaultScratch = ScratchComponent.getDefaultScratch(); if (defaultScratch != null) { OpenFileDescriptor fileDescriptor = new OpenFileDescriptor(project, defaultScratch); fileDescriptor.navigate(true); } else { new AddScratchAction().actionPerformed(event); } } @Override public void update(AnActionEvent e) { e.getPresentation().setEnabled(projectFor(e) != null); } public static Project projectFor(AnActionEvent event) { return event.getData(PlatformDataKeys.PROJECT); } }