/*
Copyright 2011-2016 Google Inc. All Rights Reserved.

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.google.security.zynamics.zylib.gui.zygraph.editmode.actions;

import com.google.security.zynamics.zylib.gui.zygraph.editmode.IStateAction;
import com.google.security.zynamics.zylib.gui.zygraph.editmode.states.CBackgroundClickedLeftState;
import com.google.security.zynamics.zylib.yfileswrap.gui.zygraph.AbstractZyGraph;
import com.google.security.zynamics.zylib.yfileswrap.gui.zygraph.nodes.ZyGraphNode;

import java.awt.event.MouseEvent;


/**
 * Default action that is executed on
 * 
 * @param <T> Type of the nodes in the graph.
 */
public class CDefaultBackgroundClickedLeftAction<T extends ZyGraphNode<?>> implements
    IStateAction<CBackgroundClickedLeftState<T>> {
  /**
   * Unselects all nodes in the graph.
   * 
   * @param graph The graph whose nodes are unselected.
   */
  protected void unselectAll(final AbstractZyGraph<T, ?> graph) {
    graph.selectNodes(graph.getNodes(), false);
  }

  @Override
  public void execute(final CBackgroundClickedLeftState<T> state, final MouseEvent event) {
    unselectAll(state.getGraph());
  }
}