plugins/maven/src/main/java/org/jetbrains/idea/maven/navigator/actions/MavenTreeAction.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.navigator.actions;

import com.intellij.openapi.actionSystem.AnActionEvent;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.idea.maven.utils.MavenDataKeys;
import org.jetbrains.idea.maven.utils.actions.MavenAction;
import org.jetbrains.idea.maven.utils.actions.MavenActionUtil;

import javax.swing.*;

public abstract class MavenTreeAction extends MavenAction {
  @Override
  protected boolean isAvailable(AnActionEvent e) {
    return super.isAvailable(e) && MavenActionUtil.isMavenizedProject(e.getDataContext()) && getTree(e) != null;
  }

  @Nullable
  protected static JTree getTree(AnActionEvent e) {
    return MavenDataKeys.MAVEN_PROJECTS_TREE.getData(e.getDataContext());
  }

  public static class CollapseAll extends MavenTreeAction {
    public void actionPerformed(AnActionEvent e) {
      JTree tree = getTree(e);
      if (tree == null) return;

      int row = tree.getRowCount() - 1;
      while (row >= 0) {
        tree.collapseRow(row);
        row--;
      }
    }
  }

  public static class ExpandAll extends MavenTreeAction {
    public void actionPerformed(AnActionEvent e) {
      JTree tree = getTree(e);
      if (tree == null) return;

      for (int i = 0; i < tree.getRowCount(); i++) {
        tree.expandRow(i);
      }
    }
  }
}