BranchActionGroup.java

/*
 * Copyright 2000-2016 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.dvcs.ui;

import com.intellij.openapi.actionSystem.ActionGroup;
import com.intellij.openapi.project.DumbAware;
import com.intellij.ui.LayeredIcon;
import com.intellij.util.ui.EmptyIcon;

import static icons.DvcsImplIcons.*;

public abstract class BranchActionGroup extends ActionGroup implements DumbAware {

  private boolean myIsFavorite;
  private final LayeredIcon myIcon;
  private final LayeredIcon myHoveredIcon;

  public BranchActionGroup() {
    super("", true);
    myIcon = new LayeredIcon(Favorite, EmptyIcon.ICON_16);
    myHoveredIcon = new LayeredIcon(FavoriteOnHover, NotFavoriteOnHover);
    getTemplatePresentation().setIcon(myIcon);
    getTemplatePresentation().setHoveredIcon(myHoveredIcon);
    updateIcons();
  }

  private void updateIcons() {
    myIcon.setLayerEnabled(0, myIsFavorite);
    myHoveredIcon.setLayerEnabled(0, myIsFavorite);

    myIcon.setLayerEnabled(1, !myIsFavorite);
    myHoveredIcon.setLayerEnabled(1, !myIsFavorite);
  }

  public boolean isFavorite() {
    return myIsFavorite;
  }

  public void setFavorite(boolean favorite) {
    myIsFavorite = favorite;
    updateIcons();
  }

  public void toggle() {
    setFavorite(!myIsFavorite);
  }
}