images/src/org/intellij/images/actions/ToggleTransparencyChessboardAction.java

   1 /*
   2  * Copyright 2004-2005 Alexey Efimov
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.intellij.images.actions;
  17
  18 import com.intellij.openapi.actionSystem.AnActionEvent;
  19 import com.intellij.openapi.actionSystem.ToggleAction;
  20 import org.intellij.images.ui.ImageComponentDecorator;
  21
  22 /**
  23  * Show/hide background action.
  24  *
  25  * @author <a href="mailto:aefimov.box@gmail.com">Alexey Efimov</a>
  26  * @see org.intellij.images.ui.ImageComponentDecorator#setTransparencyChessboardVisible
  27  */
  28 public final class ToggleTransparencyChessboardAction extends ToggleAction {
  29   public boolean isSelected(AnActionEvent e) {
  30     ImageComponentDecorator decorator = (ImageComponentDecorator)e.getDataContext().getData(ImageComponentDecorator.class.getName());
  31     return decorator != null && decorator.isEnabledForActionPlace(e.getPlace()) && decorator.isTransparencyChessboardVisible();
  32   }
  33
  34   public void setSelected(AnActionEvent e, boolean state) {
  35     ImageComponentDecorator decorator = (ImageComponentDecorator)e.getDataContext().getData(ImageComponentDecorator.class.getName());
  36     if (decorator != null && decorator.isEnabledForActionPlace(e.getPlace())) {
  37       decorator.setTransparencyChessboardVisible(state);
  38     }
  39   }
  40
  41   public void update(final AnActionEvent e) {
  42     super.update(e);
  43     ImageComponentDecorator decorator = (ImageComponentDecorator)e.getDataContext().getData(ImageComponentDecorator.class.getName());
  44     e.getPresentation().setEnabled(decorator != null && decorator.isEnabledForActionPlace(e.getPlace()));
  45     e.getPresentation().setText(isSelected(e) ? "Hide Chessboard" : "Show Chessboard");
  46   }
  47 }