cylinder list: set edit/delete button sensitivity

They are only sensitive when there is a cylinder selected.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/equipment.c b/equipment.c
index ca8c99651efbfb8f62a9f1fe9cf00248c85b5ebf..453ecb273ee5ef1823e10be4e71fe36577ef7d66 100644 (file)
--- a/equipment.c
+++ b/equipment.c
@@ -234,6 +234,10 @@ void show_dive_equipment(struct dive *dive)
                        break;
        } while (--max);
 
+       gtk_widget_set_sensitive(cylinder_list.edit, 0);
+       gtk_widget_set_sensitive(cylinder_list.del, 0);
+       gtk_widget_set_sensitive(cylinder_list.add, max < MAX_CYLINDERS);
+
        for (i = 0; i < max; i++) {
                cylinder_t *cyl = dive->cylinder+i;
 
@@ -552,9 +556,20 @@ static void percentage_data_func(GtkTreeViewColumn *col,
        g_object_set(renderer, "text", buffer, NULL);
 }
 
+static void selection_cb(GtkTreeSelection *selection, GtkTreeModel *model)
+{
+       GtkTreeIter iter;
+       int selected;
+
+       selected = gtk_tree_selection_get_selected(selection, NULL, &iter);
+       gtk_widget_set_sensitive(cylinder_list.edit, selected);
+       gtk_widget_set_sensitive(cylinder_list.del, selected);
+}
+
 static GtkWidget *cylinder_list_create(void)
 {
        GtkWidget *tree_view;
+       GtkTreeSelection *selection;
        GtkListStore *model;
 
        model = gtk_list_store_new(CYL_COLUMNS,
@@ -569,6 +584,11 @@ static GtkWidget *cylinder_list_create(void)
                );
        cylinder_list.model = model;
        tree_view = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
+
+       selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(tree_view));
+       gtk_tree_selection_set_mode(GTK_TREE_SELECTION(selection), GTK_SELECTION_BROWSE);
+       g_signal_connect(selection, "changed", G_CALLBACK(selection_cb), model);
+
        cylinder_list.desc = tree_view_column(tree_view, CYL_DESC, "Type", NULL, PANGO_ALIGN_LEFT, TRUE);
        cylinder_list.size = tree_view_column(tree_view, CYL_SIZE, "Size", size_data_func, PANGO_ALIGN_RIGHT, TRUE);
        cylinder_list.workp = tree_view_column(tree_view, CYL_WORKP, "MaxPress", pressure_data_func, PANGO_ALIGN_RIGHT, TRUE);