/*
* Copyright 2000-2007 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.TreeExpander;
import com.intellij.openapi.actionSystem.AnAction;
import com.intellij.openapi.actionSystem.AnActionEvent;
import com.intellij.openapi.actionSystem.DataContext;
import com.intellij.openapi.actionSystem.Presentation;
/**
* Created by IntelliJ IDEA.
* User: max
* Date: Dec 19, 2004
* Time: 7:38:56 PM
* To change this template use File | Settings | File Templates.
*/
public abstract class TreeCollapseAllActionBase extends AnAction {
public void actionPerformed(AnActionEvent e) {
TreeExpander expander = getExpander(e.getDataContext());
if (expander == null) return;
if (!expander.canCollapse()) return;
expander.collapseAll();
}
protected abstract TreeExpander getExpander(DataContext dataContext);
public void update(AnActionEvent event) {
Presentation presentation = event.getPresentation();
TreeExpander expander = getExpander(event.getDataContext());
presentation.setEnabled(expander != null && expander.canCollapse());
}
}