plugins/maven/src/main/java/org/jetbrains/idea/maven/project/actions/AddFileAsMavenProjectAction.java

/*
 * Copyright 2000-2010 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 org.jetbrains.idea.maven.project.actions;

import com.intellij.openapi.actionSystem.AnActionEvent;
import com.intellij.openapi.actionSystem.CommonDataKeys;
import com.intellij.openapi.actionSystem.DataContext;
import com.intellij.openapi.actionSystem.PlatformDataKeys;
import com.intellij.openapi.vfs.VirtualFile;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.idea.maven.project.MavenProjectsManager;
import org.jetbrains.idea.maven.utils.actions.MavenAction;
import org.jetbrains.idea.maven.utils.actions.MavenActionUtil;

import java.util.Collections;

public class AddFileAsMavenProjectAction extends MavenAction {
  @Override
  public void actionPerformed(AnActionEvent e) {
    final DataContext context = e.getDataContext();
    MavenProjectsManager manager = MavenActionUtil.getProjectsManager(context);
    manager.addManagedFilesOrUnignore(Collections.singletonList(getSelectedFile(context)));
  }

  @Override
  protected boolean isAvailable(AnActionEvent e) {
    final DataContext context = e.getDataContext();
    VirtualFile file = getSelectedFile(context);
    return super.isAvailable(e)
           && MavenActionUtil.isMavenProjectFile(file)
           && !isExistingProjectFile(context, file);
  }

  @Override
  protected boolean isVisible(AnActionEvent e) {
    return super.isVisible(e) && isAvailable(e);
  }

  private static boolean isExistingProjectFile(DataContext context, VirtualFile file) {
    MavenProjectsManager manager = MavenActionUtil.getProjectsManager(context);
    return manager.findProject(file) != null;
  }

  @Nullable
  private static VirtualFile getSelectedFile(DataContext context) {
    return CommonDataKeys.VIRTUAL_FILE.getData(context);
  }
}