Examples of nu.fw.jeti.plugins.drawing.shapes.actions.Action

Package nu.fw.jeti.plugins.drawing.shapes.actions

Examples of nu.fw.jeti.plugins.drawing.shapes.actions.Action

nu.fw.jeti.plugins.drawing.shapes.actions.Action
This class represents an abstract action. Action is an operation that was made by a user and that changed the picture. It is sent to all the other users. After executing all actions we can obtain the history of the picture. After creating the action it should be executed to make a difference on the picture. @author El�bieta Iwaszkiewicz (ei197866@students.mimuw.edu.pl)

   * 
   * @return action that should be undone<br>
   * <tt>null</tt> if there are no more actions to undo
   */
  public synchronized Action undo() {
    Action a = null;
    if (!doneStack.empty()) {
      a = doneStack.pop();
      undoneStack.add(a);
    }
    return a;

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   * 
   * @return action that should be redone<br>
   * <tt>null</tt> if there are no more actions to redo
   */
  public synchronized Action redo() {
    Action a = null;
    if (!undoneStack.empty()) {
      a = undoneStack.pop();
      doneStack.add(a);
    }
    return a;

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Related Classes of nu.fw.jeti.plugins.drawing.shapes.actions.Action

nu.fw.jeti.plugins.drawing.shapes.UndoRedoStackRepresentation

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