content: /*
   * Copyright 2022 Aurélien Gâteau <mail@agateau.com>
   *
   * This file is part of Pixel Wheels.
   *
   * 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.agateau.pixelwheels.tools.trackeditor;
  
  /** Represents an action modifying the track */
  public abstract class EditorAction {
      private final Editor mEditor;
  
      public EditorAction(Editor editor) {
          mEditor = editor;
      }
  
      public Editor editor() {
          return mEditor;
      }
  
      public abstract void undo();
  
      public abstract void redo();
  
      /**
       * Returns true if @p other can be merged into this, instead of being added to the undo stack
       */
      public abstract boolean mergeWith(EditorAction other);
  }
  