/*******************************************************************************
* Copyright (c) 2012-2017 Codenvy, S.A.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Codenvy, S.A. - initial API and implementation
*******************************************************************************/
package org.eclipse.che.ide.api.data.tree;
import com.google.common.annotations.Beta;
/**
* Component which performs basic tree operation such as expand and collapse.
*
* @author Vlad Zhukovskyi
* @since 5.0.0
*/
@Beta
public interface TreeExpander {
/**
* Perform tree expand in case if {@link #isExpandEnabled()} returns {@code true}.
*/
void expandTree();
/**
* Returns {@code true} in case if tree expand is possible.
*
* @return {@code true} in case if tree expand is possible, otherwise {@code false}
*/
boolean isExpandEnabled();
/**
* Perform tree collapse in case if {@link #isCollapseEnabled()} returns {@code true}.
*/
void collapseTree();
/**
* Returns {@code true} in case if tree collapse is possible.
*
* @return {@code true} in case if tree collapse is possible, otherwise {@code false}
*/
boolean isCollapseEnabled();
}