source: glemon-0.x/mapstorage.h @ 148:5adf29662354

// -*- C++ -*- //

#ifndef MAPSTORAGE_H
#define MAPSTORAGE_H

class Mapstorage;

#include "all_include.h"
#include "xymap.h"
#include <libgnomecanvasmm.h>

///class MapStorage handles NodeMaps and EdgeMaps.

///Class MapStorage is responsible for storing
///NodeMaps and EdgeMaps that can be shown later
///on GUI. Therefore maps can be added to it,
///and datas over the added maps can be queried.
///The maps will be stored in an std::map,
///referenced with their names. Unfortunately at
///the moment it works only with double type maps
///
///\todo too many things are public!!
class MapStorage
{
public:

  ///The graph for which the datas are stored.
  Graph graph;
  /// the coordinates of the nodes
  XYMap<Graph::NodeMap<double> > coords;
  /// the coordinates of the arrows on the edges
  XYMap<Graph::EdgeMap<double> > arrow_pos;

  ///The content of the object has changed, update is needed.
  bool modified;

  ///Name of file loaded in object.
  std::string file_name;

  ///Stores double type NodeMaps
  std::map< std::string,Graph::NodeMap<double> * > nodemap_storage;

  ///Stores double type EdgeMaps
  std::map< std::string,Graph::EdgeMap<double> * > edgemap_storage;

  ///Stores the default values for the different visualization node attributes
  std::vector<Graph::NodeMap<double> > default_nodemaps;

  ///Stores the default values for the different visualization edge attributes
  std::vector<Graph::EdgeMap<double> > default_edgemaps;

  ///Stores the active maps for the different visualization node attributes
  std::vector< std::string > active_nodemaps;

  /// Stores the active maps for the different visualization edge attributes
  std::vector< std::string > active_edgemaps;

  /// Default values for the maps
  std::map< std::string, double > nodemap_default;

  /// Default values for the maps
  std::map< std::string, double > edgemap_default;

  bool arrow_pos_read_ok;

protected:
  /// type of the signal emitted if the visualization of the maps might have to be updated.

  /// bool shows us whether the changed map is edge or nodemap.
  /// int tells us the refreshed property
  typedef sigc::signal<void, bool, int> Signal_Prop;

  /// Signal emitted on any change made on map values
  Signal_Prop signal_prop;

  /// Signal emitted in the case of nodemap addition

  /// std::string is the
  ///name of the new map
  sigc::signal<void, std::string> signal_node_map;

  /// Signal emitted in the case of edgemap addition

  /// std::string is the
  ///name of the new map
  sigc::signal<void, std::string> signal_edge_map;

public:
  ///Constructor of MapStorage.

  ///Its all activity is initializing default values
  ///for different visualization attributes.
  MapStorage();

  ///Destructor of MapStorage

  ///Maps stored here are created with new. Destructor
  ///deletes them to free up the reserved memory.
  ~MapStorage();

  /// Registrates if the shown map by any attribute has changed to another.

  ///It handles the \ref active_edgemaps and
  ///\ref active_nodemaps vectors. It also emits \ref signal_prop signal to let
  ///know the interested objects that the visible map of a certain
  ///attribute has changed.
  ///\param itisedge edgemap or nodemap has changed
  ///\param prop the property of which the map is changed
  ///\param mapname the visible map
  void changeActiveMap(bool itisedge , int prop , std::string mapname);

  /// Returns the active edgemap shown by a visualization property.

  /// \param prop is the property
  ///that shows the requested map.
  std::string getActiveEdgeMap(int prop);

  /// Returns the active nodemap shown by a visualization property.

  /// \param prop is the property
  ///that shows the requested map.
  std::string getActiveNodeMap(int prop);

  /// Returns the names of the edgemaps stored here.
  std::vector<std::string> getEdgeMapList();

  /// Returns the names of the nodemaps stored here.
  std::vector<std::string> getNodeMapList();

  ///returns \ref signal_prop to be able to connect functions to it
  Signal_Prop signal_prop_ch();

  ///returns \ref signal_node_map to be able to connect functions to it
  sigc::signal<void, std::string> signal_node_map_ch(){return signal_node_map;};

  ///returns \ref signal_edge_map to be able to connect functions to it
  sigc::signal<void, std::string> signal_edge_map_ch(){return signal_edge_map;};

  ///Adds given map to storage.

  ///A name and the map itself has to be provided.
  ///\param mapname is the name of map
  ///\param nodemap is the pointer of the given nodemap
  ///\param def the default value of the map. If not given, it will be 0.
  ///If new edge is added to graph the value of it in the map will be this.
  ///\todo map should be given by reference!
  ///\todo why is default value stored?
  int addNodeMap(const std::string & mapname,Graph::NodeMap<double> * nodemap, double def=0.0);

  ///Adds given map to storage. A name and the map itself has to be provided.

  ///A name and the map itself has to be provided.
  ///\param mapname is the name of map
  ///\param edgemap is the pointer of the given edgemap
  ///\param def the default value of the map. If not given, it will be 0.
  ///If new edge is added to graph the value of it in the map will be this.
  ///\todo map should be given by reference!
  int addEdgeMap(const std::string & mapname,Graph::EdgeMap<double> * edgemap, double def=0.0);

  ///Returns how much nodemaps is stored in \ref MapStorage
  int numOfNodeMaps() {return nodemap_storage.size();};

  ///Returns how much edgemaps is stored in \ref MapStorage
  int numOfEdgeMaps() {return edgemap_storage.size();};

  ///Returns the maximum value of the given NodeMap.

  ///NodeMap has to be given by its name.
  ///\param name the name of map of which maximum is searched
  double maxOfNodeMap(const std::string & name);

  ///Returns the maximum value of the given EdgeMap.

  ///EdgeMap has to be given by its name.
  ///\param name the name of map of which maximum is searched
  double maxOfEdgeMap(const std::string & name);

  ///Returns the minimum value of the given NodeMap.

  ///NodeMap has to be given by its name.
  ///\param name the name of map of which minimum is searched
  double minOfNodeMap(const std::string & name);

  ///Returns the minimum value of the given EdgeMap.

  ///EdgeMap has to be given by its name.
  ///\param name the name of map of which minimum is searched
  double minOfEdgeMap(const std::string & name);

  ///Returns iterator pointing to the first NodeMap in storage.

  ///To be able to iterate through each maps this function
  ///returns an iterator pointing to the first nodemap in
  ///the storage.
  std::map< std::string,Graph::NodeMap<double> * >::iterator beginOfNodeMaps(){return nodemap_storage.begin();};

  ///Returns iterator pointing to the first EdgeMap in storage.

  ///To be able to iterate through each maps this function
  ///returns an iterator pointing to the first edgemap in
  ///the storage.
  std::map< std::string,Graph::EdgeMap<double> * >::iterator beginOfEdgeMaps(){return edgemap_storage.begin();};

  ///Returns iterator pointing after the last NodeMap in storage.

  ///To be able to iterate through each maps this function
  ///returns an iterator pointing to the last nodemap in the storage.
  std::map< std::string,Graph::NodeMap<double> * >::iterator endOfNodeMaps(){return nodemap_storage.end();};

  ///Returns iterator pointing after the last EdgeMap in storage.

  ///To be able to iterate through each maps this function
  ///returns an iterator pointing to the last edgemap in the storage.
  std::map< std::string,Graph::EdgeMap<double> * >::iterator endOfEdgeMaps(){return edgemap_storage.end();};

  ///Emits \ref signal_prop if mapvalues have changed, and MapStorage gets to know it.

  ///If values in a map have changed, this function checks, whether it is displayed.
  ///This check means searching the given mapname between active maps
  ///(\ref active_nodemaps, \ref active_edgemaps). If it is there at a certain property,
  ///it emits a signal with the property, where the gotten mapname was found. One signal
  ///is emitted for each property displaying the given map.
  ///\param itisedge whether the map an edgemap or nodemap
  ///\param mapname name of map to visualize
  void mapChanged(bool itisedge, std::string mapname);

  ///Read datas from the given filename.
  int readFromFile(const std::string &);

  ///Save datas to the given filename.
  void writeToFile(const std::string &);

  ///Deletes all datastructures stored here.
  void clear();

  void ArrowPosReadOK();
};

#endif //MAPSTORAGE_H