src/apps/haikudepot/edits_generic/EditStack.cpp

   1 /*
   2  * Copyright 2012, Stephan Aßmus <superstippi@gmx.de>
   3  * Distributed under the terms of the MIT License.
   4  */
   5
   6 #include "EditStack.h"
   7
   8 #include <stdio.h>
   9
  10
  11 EditStack::EditStack()
  12         : fEdits()
  13 {
  14 }
  15
  16
  17 EditStack::~EditStack()
  18 {
  19 }
  20
  21
  22 bool
  23 EditStack::Push(const UndoableEditRef& edit)
  24 {
  25         return fEdits.Add(edit);
  26 }
  27
  28
  29 UndoableEditRef
  30 EditStack::Pop()
  31 {
  32         UndoableEditRef edit(Top());
  33         fEdits.Remove();
  34         return edit;
  35 }
  36
  37
  38 const UndoableEditRef&
  39 EditStack::Top() const
  40 {
  41         return fEdits.LastItem();
  42 }
  43
  44
  45 bool
  46 EditStack::IsEmpty() const
  47 {
  48         return fEdits.CountItems() == 0;
  49 }