src/TortoiseProc/RevisionGraph/CollapseTreeUpward.h

   1 // TortoiseSVN - a Windows shell extension for easy version control
   2
   3 // Copyright (C) 2003-2008 - TortoiseSVN
   4
   5 // This program is free software; you can redistribute it and/or
   6 // modify it under the terms of the GNU General Public License
   7 // as published by the Free Software Foundation; either version 2
   8 // of the License, or (at your option) any later version.
   9
  10 // This program is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14
  15 // You should have received a copy of the GNU General Public License
  16 // along with this program; if not, write to the Free Software Foundation,
  17 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 //
  19 #pragma once
  20
  21 // include base classes
  22
  23 #include "ModificationOptions.h"
  24 #include "Resource.h"
  25
  26 // forward declarations
  27
  28 class CGraphNodeStates;
  29
  30 /**
  31 * For all nodes that have their parent tree collapsed,
  32 * make those nodes roots and remove the remaining parent trees.
  33 */
  34
  35 class CCollapseTreeUpward
  36     : public CModificationOptionImpl< IModificationOption
  37                                     , 2200
  38                                     , 0
  39                                     , false     // branches last
  40                                     , true      // from roots to leaves
  41                                     , false>    // this is not a cyclic option
  42 {
  43 private:
  44
  45     /// node states that decide where to cut
  46
  47     const CGraphNodeStates* nodeStates;
  48
  49     /// collapsing makes these nodes new roots
  50     /// (used temporarily between Apply() and PostFilter())
  51
  52     std::vector<CVisibleGraphNode*> newRoots;
  53
  54 public:
  55
  56     /// construction
  57
  58     CCollapseTreeUpward ( CRevisionGraphOptionList& list
  59                         , const CGraphNodeStates* nodeStates);
  60
  61     /// implement IModificationOption
  62
  63     virtual void Apply (CVisibleGraph* graph, CVisibleGraphNode* node);
  64     virtual void PostFilter (CVisibleGraph* graph);
  65 };