Android Open Source - opensudoku Abstract Command

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Back to project page opensudoku.

License

The source code is released under:

GNU General Public License

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Java Source Code

/* 
 * Copyright (C) 2009 Roman Masek/* w  ww.j  av a 2  s  . c o  m*/
 * 
 * This file is part of OpenSudoku.
 * 
 * OpenSudoku is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * OpenSudoku is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with OpenSudoku.  If not, see <http://www.gnu.org/licenses/>.
 * 
 */

package org.moire.opensudoku.game.command;

import android.os.Bundle;

/**
 * Generic interface for command in application.
 *
 * @author romario
 */
public abstract class AbstractCommand {

  public static AbstractCommand newInstance(String commandClass) {
    if (commandClass.equals(ClearAllNotesCommand.class.getSimpleName())) {
      return new ClearAllNotesCommand();
    } else if (commandClass.equals(EditCellNoteCommand.class.getSimpleName())) {
      return new EditCellNoteCommand();
    } else if (commandClass.equals(FillInNotesCommand.class.getSimpleName())) {
      return new FillInNotesCommand();
    } else if (commandClass.equals(SetCellValueCommand.class.getSimpleName())) {
      return new SetCellValueCommand();
    } else {
      throw new IllegalArgumentException(String.format("Unknown command class '%s'.", commandClass));
    }
  }

  private boolean mIsCheckpoint;

  void saveState(Bundle outState) {
    outState.putBoolean("isCheckpoint", mIsCheckpoint);
  }

  void restoreState(Bundle inState) {
    mIsCheckpoint = inState.getBoolean("isCheckpoint");
  }

  public boolean isCheckpoint() {
    return mIsCheckpoint;
  }

  public void setCheckpoint(boolean isCheckpoint) {
    mIsCheckpoint = isCheckpoint;
  }

  public String getCommandClass() {
    return getClass().getSimpleName();
  }

  /**
   * Executes the command.
   */
  abstract void execute();

  /**
   * Undo this command.
   */
  abstract void undo();

}

Java Source Code List