add properter classes

src/analysis/network/CMakeLists.txt

@@ -6,6 +6,7 @@
 SET(QGIS_NETWORK_ANALYSIS_SRCS
   qgsgraph.cpp
   qgsgraphbuilder.cpp
+  qgsdistanceedgeproperter.cpp
 )
 
 INCLUDE_DIRECTORIES(BEFORE raster)
@@ -54,7 +55,9 @@ INSTALL(TARGETS qgis_networkanalysis
 SET(QGIS_NETWORK_ANALYSIS_HDRS 
   qgsgraph.h 
   qgsgraphbuilderinterface.h 
-  qgsgraphbuilder.h )
+  qgsgraphbuilder.h 
+  qgsedgeproperter.h 
+  qgsdistanceedgeproperter.h )
 
 INSTALL(CODE "MESSAGE(\"Installing NETWORK ANALYSIS headers...\")")
 INSTALL(FILES ${QGIS_NETWORK_ANALYSIS_HDRS} ${QGIS_NETWORK_ANALYSIS_MOC_HDRS} DESTINATION ${QGIS_INCLUDE_DIR}) 

src/analysis/network/qgsdistanceedgeproperter.cpp

@@ -0,0 +1,18 @@
+/***************************************************************************
+ *   Copyright (C) 2011 by Sergey Yakushev                                 *
+ *   yakushevs <at >list.ru                                                *
+ *                                                                         *
+ *                                                                         *
+ *   This program 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 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ ***************************************************************************/
+
+//QGIS includes
+#include <qgsdistanceedgeproperter.h>
+
+QVariant QgsDistanceEdgeProperter::property( double distance, const QgsFeature& f ) const
+{
+    return QVariant( distance );
+}

src/analysis/network/qgsdistanceedgeproperter.h

@@ -0,0 +1,30 @@
+/***************************************************************************
+  qgsedgeproperter.h
+  --------------------------------------
+  Date                 : 2011-04-01
+  Copyright            : (C) 2010 by Yakushev Sergey
+  Email                : YakushevS <at> list.ru
+****************************************************************************
+*                                                                          *
+*   This program 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 2 of the License, or      *
+*   (at your option) any later version.                                    *
+*                                                                          *
+***************************************************************************/
+
+#ifndef QGSEDGEDISTANCEPROPERTERH
+#define QGSEDGEDISTANCEPROPERTERH
+
+// QT4 includes
+#include <QVariant>
+
+// QGIS includes
+#include <qgsedgeproperter.h>
+
+class ANALYSIS_EXPORT QgsDistanceEdgeProperter : public QgsEdgeProperter
+{
+  public:
+    virtual QVariant property( double distance, const QgsFeature& ) const;
+};
+#endif //QGSEDGEDISTANCEPROPERTYH

src/analysis/network/qgsedgeproperter.h

@@ -23,15 +23,29 @@
 #include <qgsfeature.h>
 #include <qgslabel.h>
 
+/**
+ * \class QgsEdgeProperter
+ * \brief QgsEdgeProperter is a strategy pattern. You can use it for customize edge property.
+ */
 class ANALYSIS_EXPORT QgsEdgeProperter
 {
   public:
+    /**
+     * default constructor
+     */
     QgsEdgeProperter()
     { }
-
+
+    /**
+     * QgsGraphDirector call this method for fetching attribute from source layer
+     * \return required attributes list
+     */
     virtual QgsAttributeList requiredAttributes() const
     { return QgsAttributeList(); }
 
+    /**
+     * calculate and return adge property
+     */
     virtual QVariant property( double distance, const QgsFeature& f ) const
     { return QVariant(); }
 };