/*
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.functions;

import com.google.security.zynamics.zylib.gui.zygraph.helpers.INodeCallback;
import com.google.security.zynamics.zylib.types.common.IterationMode;
import com.google.security.zynamics.zylib.yfileswrap.gui.zygraph.AbstractZyGraph;
import com.google.security.zynamics.zylib.yfileswrap.gui.zygraph.nodes.ZyGraphNode;

import java.util.ArrayList;

public class SelectionFunctions {
  /**
   * Inverts the selected nodes of a graph.
   * 
   * @param <NodeType> The type of the nodes in the graph.
   * 
   * @param graph The graph in question.
   */
  public static <NodeType extends ZyGraphNode<?>> void invertSelection(
      final AbstractZyGraph<NodeType, ?> graph) {
    final ArrayList<NodeType> toSelect = new ArrayList<NodeType>();
    final ArrayList<NodeType> toUnselect = new ArrayList<NodeType>();

    graph.iterate(new INodeCallback<NodeType>() {
      @Override
      public IterationMode next(final NodeType node) {
        if (node.isSelected()) {
          toUnselect.add(node);
        } else {
          toSelect.add(node);
        }

        return IterationMode.CONTINUE;
      }
    });

    graph.selectNodes(toSelect, toUnselect);
  }

}
