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do housekeeping each time selection is updated

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This commit is contained in:
Brandon Lewis 2010-07-21 16:29:12 +02:00 committed by Edward Hervey
parent b5affabc0c
commit 8ae5872787
1 changed files with 30 additions and 12 deletions
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42
tests/examples/ges-ui.c
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@ -31,6 +31,8 @@ typedef struct App
GtkListStore *model; GtkListStore *model;
GtkTreeSelection *selection; GtkTreeSelection *selection;
GtkWidget *properties; GtkWidget *properties;
GList *selected_objects;
int n_selected;
} App; } App;
App *app_new (void); App *app_new (void);
@ -43,6 +45,8 @@ GList *app_get_selected_objects (App * app);
void app_delete_objects (App * app, GList * objects); void app_delete_objects (App * app, GList * objects);
void app_update_selection (App * app);
void window_destroy_cb (GtkObject * window, App * app); void window_destroy_cb (GtkObject * window, App * app);
void quit_item_activate_cb (GtkMenuItem * item, App * app); void quit_item_activate_cb (GtkMenuItem * item, App * app);
@ -94,11 +98,10 @@ add_file_item_activate_cb (GtkMenuItem * item, App * app)
void void
app_selection_changed_cb (GtkTreeSelection * selection, App * app) app_selection_changed_cb (GtkTreeSelection * selection, App * app)
{ {
int n; app_update_selection (app);
n = gtk_tree_selection_count_selected_rows (selection);
/* some widgets should be disabled when we have an empty selection */ /* some widgets should be disabled when we have an empty selection */
gtk_widget_set_sensitive (app->properties, n > 0); gtk_widget_set_sensitive (app->properties, app->n_selected > 0);
} }
/* application methods ******************************************************/ /* application methods ******************************************************/
@ -106,6 +109,29 @@ app_selection_changed_cb (GtkTreeSelection * selection, App * app)
static void selection_foreach (GtkTreeModel * model, GtkTreePath * path, static void selection_foreach (GtkTreeModel * model, GtkTreePath * path,
GtkTreeIter * iter, gpointer user); GtkTreeIter * iter, gpointer user);
void
app_update_selection (App * app)
{
GList *cur;
/* clear old selection */
for (cur = app->selected_objects; cur; cur = cur->next) {
g_object_unref (cur->data);
cur->data = NULL;
}
g_list_free (app->selected_objects);
app->selected_objects = NULL;
app->n_selected = 0;
/* get new selection */
gtk_tree_selection_selected_foreach (GTK_TREE_SELECTION (app->selection),
selection_foreach, &app->selected_objects);
for (cur = app->selected_objects; cur; cur = cur->next) {
app->n_selected++;
}
}
static void static void
selection_foreach (GtkTreeModel * model, GtkTreePath * path, GtkTreeIter selection_foreach (GtkTreeModel * model, GtkTreePath * path, GtkTreeIter
* iter, gpointer user) * iter, gpointer user)
@ -122,14 +148,7 @@ selection_foreach (GtkTreeModel * model, GtkTreePath * path, GtkTreeIter
GList * GList *
app_get_selected_objects (App * app) app_get_selected_objects (App * app)
{ {
GList *objects = NULL; return g_list_copy (app->selected_objects);
g_print ("selection: %p\n", app->selection);
gtk_tree_selection_selected_foreach (GTK_TREE_SELECTION (app->selection),
selection_foreach, &objects);
return objects;
} }
void void
@ -140,7 +159,6 @@ app_delete_objects (App * app, GList * objects)
for (cur = objects; cur; cur = cur->next) { for (cur = objects; cur; cur = cur->next) {
ges_timeline_layer_remove_object (app->layer, ges_timeline_layer_remove_object (app->layer,
GES_TIMELINE_OBJECT (cur->data)); GES_TIMELINE_OBJECT (cur->data));
g_object_unref ((GObject *) cur->data);
cur->data = NULL; cur->data = NULL;
} }