Re: TreeModel

[Kjell Ahlstedt <kjellahlstedt gmail com>]

Can't you use plain old loops? Something like this:

class ModelColumns : public Gtk::TreeModel::ColumnRecord
        {
                public:

                ModelColumns()
                {
                    for (int col = 0; col < 6; ++col)
                      add(m_cols[col]);
                }
                Gtk::TreeModelColumn<Glib::ustring> m_cols[6];
        }
......
              m_refTreeModel =  Gtk::ListStore::create(m_Columns);
              m_TreeView->set_model(m_refTreeModel);
              for (int col = 0; col < 6; ++col)
                m_TreeView->append_column(title[col], 
m_Columns.m_cols[col]);

             Gtk::TreeModel::Row rows[35];
             for (int row = 0; row < 35; ++row)
             {
               rows[row] = *(m_refTreeModel->append());

               for (int col = 0; col < 6; ++col)
                  rows[row][m_Columns.m_cols[col]] = array[row][col];
           }


Den 2017-09-19 kl. 14:35, skrev Deepak Chiradoni:
> Hi,
>
> I am currently adding data coming from CSV(Comma Separated Values) 
> file.All the data from CSV is string only. As I have 35 rows and 6 
> Columns of data in string.
>
> class ModelColumns : public Gtk::TreeModel::ColumnRecord
>         {
>                 public:
>
>                 ModelColumns()
>                 {
>                               add(m_colA);
>                               add(m_colB);
>                               add(m_colC);
>                               add(m_colD);
>                               add(m_colE);
>                               add(m_colF);
>                 }
> Gtk::TreeModelColumn<Glib::ustring>      m_colA;
> Gtk::TreeModelColumn<Glib::ustring>      m_colB;
> Gtk::TreeModelColumn<Glib::ustring>      m_colC;
> Gtk::TreeModelColumn<Glib::ustring>      m_colD;
> Gtk::TreeModelColumn<Glib::ustring>      m_colE;
> Gtk::TreeModelColumn<Glib::ustring>      m_colF;
>         };
>
> void LoadBtn()
> {
>        Gtk::FileChooserDialog dialog("Please select a file to open",
>        Gtk::FILE_CHOOSER_ACTION_OPEN);
>        dialog.set_transient_for(*this);
>
>         //Add response buttons the the dialog:
>         dialog.add_button("_Cancel", Gtk::RESPONSE_CANCEL);
>         dialog.add_button("_Open", Gtk::RESPONSE_OK);
>
>         //Add filters, so that only certain file types can be selected:
>
>         auto filter_text = Gtk::FileFilter::create();
>         filter_text->set_name("csv files (*.csv)|*.csv");
>         filter_text->add_pattern("*");
>         dialog.add_filter(filter_text);
>
>         //Show the dialog and wait for a user response:
>         int result = dialog.run();
>
>           //Handle the response:
>           switch(result)
>           {
>             case(Gtk::RESPONSE_OK):
>             {
>                     std::string filename = dialog.get_filename();
>
>                     ifstream in(filename);
>
>                         string line, field;
>
>                         vector< vector<Glib::ustring> > array;  // the 
> 2D array
>                         vector<Glib::ustring> v;              // array 
> of values for one line only
>
>                         while ( getline(in,line) )    // get next line 
> in file
>                         {
>                             v.clear();
>                             stringstream ss(line);
>
>
>                             while (getline(ss,field,','))  // break 
> line into comma delimitted fields
>                             {
>                                 v.push_back(field);  // add each field 
> to the 1D array
>                             }
>
>                             array.push_back(v);  // add the 1D array 
> to the 2D array
>                         }
>
>               m_refTreeModel =  Gtk::ListStore::create(m_Columns);
>               m_TreeView->set_model(m_refTreeModel);
>               m_TreeView->append_column("Data1", m_Columns.m_colA);
>               m_TreeView->append_column("Data2", m_Columns.m_colB);
>               m_TreeView->append_column("Data3", m_Columns.m_colC);
>               m_TreeView->append_column("Data4", m_Columns.m_colD);
>               m_TreeView->append_column("Data5", m_Columns.m_colE);
>               m_TreeView->append_column("Data6", m_Columns.m_colF);
>
>               Gtk::TreeModel::Row row = *(m_refTreeModel->append());
>               row[m_Columns.m_colA] = array[0][0]; 
> row[m_Columns.m_colB] = array[0][1]; row[m_Columns.m_colC] = array[0][2];
>               row[m_Columns.m_colD] = array[0][3]; 
> row[m_Columns.m_colE] = array[0][4]; row[m_Columns.m_colF] = array[0][5];
>
>               Gtk::TreeModel::Row row1 = *(m_refTreeModel->append());
>               row1[m_Columns.m_colA] = array[1][0]; 
> row1[m_Columns.m_colB] = array[1][1]; row1[m_Columns.m_colC] = 
> array[1][2];                       row1[m_Columns.m_colD] = 
> array[1][3]; row1[m_Columns.m_colE] = array[1][4]; 
> row1[m_Columns.m_colF] = array[1][5];
>
>               //35 Rows Like This
>
>               break;
>             }
>             default:
>             {
>               break;
>             }
>         }
>
> }
>
> Like this I am adding 35 rows. Its very Lengthy. I am getting data 
> from string vector as I have added the code for FileChoser Function. I 
> am defining a class for TreeModel as I added.
>
> Regrads
> Deepak, India.