Allow multiple selections in the dive list

[ext/subsurface.git] / divelist.c

diff --git a/divelist.c b/divelist.c
index b43adfd0cd4728e6b50fefdcf6e46611ae10b015..5f2063e9f8192fa6f10fb4a744f046dd5b448904 100644 (file)
--- a/divelist.c
+++ b/divelist.c
@@ -50,17 +50,42 @@ enum {
        DIVELIST_COLUMNS
 };
 
+static GList *selected_dives;
+
 static void selection_cb(GtkTreeSelection *selection, GtkTreeModel *model)
 {
        GtkTreeIter iter;
        GValue value = {0, };
+       GtkTreePath *path;
 
-       if (!gtk_tree_selection_get_selected(selection, NULL, &iter))
-               return;
+       int nr_selected = gtk_tree_selection_count_selected_rows(selection);
 
-       gtk_tree_model_get_value(model, &iter, DIVE_INDEX, &value);
-       selected_dive = g_value_get_int(&value);
-       repaint_dive();
+       if (selected_dives) {
+               g_list_foreach (selected_dives, (GFunc) gtk_tree_path_free, NULL);
+               g_list_free (selected_dives);
+       }
+       selected_dives = gtk_tree_selection_get_selected_rows(selection, NULL);
+
+       switch (nr_selected) {
+       case 0: /* keep showing the last selected dive */
+               return;
+       case 1: 
+               /* just pick that dive as selected */
+               path = g_list_nth_data(selected_dives, 0);
+               if (gtk_tree_model_get_iter(model, &iter, path)) {
+                       gtk_tree_model_get_value(model, &iter, DIVE_INDEX, &value);
+                       selected_dive = g_value_get_int(&value);
+                       repaint_dive();
+               }
+               return;
+       default: /* multiple selections - what now? At this point I
+                 * don't want to change the selected dive unless
+                 * there is exactly one dive selected; not sure this
+                 * is the most intuitive solution.
+                 * I do however want to keep around which dives have
+                 * been selected */
+               return;
+       }
 }
 
 static void date_data_func(GtkTreeViewColumn *col,
@@ -424,9 +449,9 @@ void update_dive_list_units(void)
 
 void update_dive_list_col_visibility(void)
 {
-               gtk_tree_view_column_set_visible(dive_list.sac, visible_cols.sac);
-               gtk_tree_view_column_set_visible(dive_list.otu, visible_cols.otu);
-               return;
+       gtk_tree_view_column_set_visible(dive_list.sac, visible_cols.sac);
+       gtk_tree_view_column_set_visible(dive_list.otu, visible_cols.otu);
+       return;
 }
 
 static void fill_dive_list(void)
@@ -469,46 +494,10 @@ void dive_list_update_dives(void)
        repaint_dive();
 }
 
-typedef void (*data_func_t)(GtkTreeViewColumn *col,
-                           GtkCellRenderer *renderer,
-                           GtkTreeModel *model,
-                           GtkTreeIter *iter,
-                           gpointer data);
-
 static GtkTreeViewColumn *divelist_column(struct DiveList *dl, int index, const char *title,
-                                       data_func_t data_func, PangoAlignment align, gboolean visible)
+                               data_func_t data_func, PangoAlignment align, gboolean visible)
 {
-       GtkCellRenderer *renderer;
-       GtkTreeViewColumn *col;
-       double xalign = 0.0; /* left as default */
-
-       renderer = gtk_cell_renderer_text_new();
-       col = gtk_tree_view_column_new();
-
-       gtk_tree_view_column_set_title(col, title);
-       gtk_tree_view_column_set_sort_column_id(col, index);
-       gtk_tree_view_column_set_resizable(col, TRUE);
-       gtk_tree_view_column_pack_start(col, renderer, TRUE);
-       if (data_func)
-               gtk_tree_view_column_set_cell_data_func(col, renderer, data_func, NULL, NULL);
-       else
-               gtk_tree_view_column_add_attribute(col, renderer, "text", index);
-       gtk_object_set(GTK_OBJECT(renderer), "alignment", align, NULL);
-       switch (align) {
-       case PANGO_ALIGN_LEFT:
-               xalign = 0.0;
-               break;
-       case PANGO_ALIGN_CENTER:
-               xalign = 0.5;
-               break;
-       case PANGO_ALIGN_RIGHT:
-               xalign = 1.0;
-               break;
-       }
-       gtk_cell_renderer_set_alignment(GTK_CELL_RENDERER(renderer), xalign, 0.5);
-       gtk_tree_view_column_set_visible(col, visible);
-       gtk_tree_view_append_column(GTK_TREE_VIEW(dl->tree_view), col);
-       return col;
+       return tree_view_column(dl->tree_view, index, title, data_func, align, visible);
 }
 
 /*
@@ -541,7 +530,7 @@ GtkWidget *dive_list_create(void)
 
        selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(dive_list.tree_view));
 
-       gtk_tree_selection_set_mode(GTK_TREE_SELECTION(selection), GTK_SELECTION_BROWSE);
+       gtk_tree_selection_set_mode(GTK_TREE_SELECTION(selection), GTK_SELECTION_MULTIPLE);
        gtk_widget_set_size_request(dive_list.tree_view, 200, 200);
 
        dive_list.date = divelist_column(&dive_list, DIVE_DATE, "Date", date_data_func, PANGO_ALIGN_LEFT, TRUE);