src/qanGraphModel.h

   1 /*
   2 Qanava - Graph drawing library for QT
   3 Copyright (C) 2006 Benoit AUTHEMAN
   4
   5 This library is free software; you can redistribute it and/or
   6 modify it under the terms of the GNU Lesser General Public
   7 License as published by the Free Software Foundation; either
   8 version 2.1 of the License, or (at your option) any later version.
   9
  10 This library 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 GNU
  13 Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public
  16 License along with this library; if not, write to the Free Software
  17 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  18 */
  19
  20 //-----------------------------------------------------------------------------
  21 // This file is a part of the Qanava software.
  22 //
  23 // \file        canGraphModel.h
  24 // \author      Benoit Autheman (benoit@libqanava.org)
  25 // \date        2007 December 27
  26 //-----------------------------------------------------------------------------
  27
  28
  29 #ifndef canGraphModel_h
  30 #define canGraphModel_h
  31
  32
  33 // Qanava headers
  34 #include "./qanNodeItem.h"
  35 #include "./qanEdgeItem.h"
  36
  37
  38 // QT headers
  39 #include <QStandardItemModel>
  40
  41
  42 //-----------------------------------------------------------------------------
  43 namespace qan { // ::qan
  44
  45         //! Standard interface for template listeners used in qan::GraphT.
  46         class GraphListener
  47         {
  48                 /*! \name Graph Topology Listener *///---------------------------------
  49                 //@{
  50         public:
  51
  52                 void    init( Node::List& rootNodes ) { }
  53
  54                 void    edgeInserted( qan::Edge& edge ) { }
  55
  56                 void    edgeRemoved( qan::Edge& edge ) { }
  57
  58                 void    nodeInserted( qan::Node& node ) { }
  59
  60                 void    nodeRemoved( qan::Node& node ) { }
  61
  62                 void    nodeChanged( qan::Node& node ) { }
  63                 //@}
  64                 //---------------------------------------------------------------------
  65         };
  66
  67
  68         //! Expose a graph data structure to a QT Interview model.
  69         /*!
  70                 \nosubgrouping
  71         */
  72         class GraphModel : public QStandardItemModel, public GraphListener
  73         {
  74         public:
  75
  76                 GraphModel( );
  77
  78                 /*! \name Scene Interface Management *///------------------------------
  79                 //@{
  80         public:
  81
  82                 qan::Node*      getModelIndexNode( QModelIndex index );
  83
  84                 void            init( Node::List& rootNodes );
  85
  86                 void            edgeInserted( qan::Edge& edge );
  87
  88                 void            edgeRemoved( qan::Edge& edge );
  89
  90                 void            nodeInserted( qan::Node& node );
  91
  92                 void            nodeRemoved( qan::Node& node );
  93
  94                 void            nodeChanged( qan::Node& node );
  95
  96         protected:
  97
  98                 void                    visit( qan::Node& node );
  99
 100                 void                    createNode( qan::Node& node );
 101
 102                 void                    removeNode( qan::Node& node );
 103
 104                 QStandardItem*  addItem( qan::Node& node, QStandardItem* parent = 0 );
 105
 106                 void                    removeItem( qan::Node& node );
 107
 108                 //! Remove an item and all its child from the model.
 109                 void                    removeItemHierarchy( QStandardItem* item );
 110
 111                 //! Add and item (and all its childs) to a given parent.
 112                 void                    addItemHierarchy( qan::Node& node, QStandardItem* parent = 0, qan::Node::Set* marked = 0 );
 113
 114                 typedef                 QMultiMap< qan::Node*, QStandardItem* > NodeItemMap;
 115
 116                 NodeItemMap             _nodeItemMap;
 117                 //@}
 118                 //---------------------------------------------------------------------
 119         };
 120 } // ::qan
 121 //-----------------------------------------------------------------------------
 122
 123
 124 #endif // canGraphModel_h
 125