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Implement cm_list_length() for faster list length computations

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Since we only need to know whether the list of selected items
has 0, 1 or 2 or more items, it's enough to check for these 3 cases
This commit is contained in:
Enrico Tröger 2010-01-07 23:59:00 +01:00 committed by Christian Dywan
parent a8cd1499ab
commit d7aa05b9ec
1 changed files with 19 additions and 4 deletions
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23
extensions/cookie-manager/cookie-manager-page.c
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@ -311,6 +311,21 @@ static void cm_free_selection_list(GList *rows, GFunc func)
}
/* Fast version of g_list_length(). It only checks for the first few elements of
* the list and returns the length 0, 1 or 2 where 2 means 2 elements or more. */
static gint cm_list_length(GList *list)
{
if (list == NULL)
return 0;
else if (list->next == NULL)
return 1;
else if (list->next != NULL)
return 2;
return 0; /* safe default */
}
static void cm_tree_popup_collapse_activate_cb(GtkMenuItem *item, CookieManagerPage *cmp)
{
CookieManagerPagePrivate *priv = COOKIE_MANAGER_PAGE_GET_PRIVATE(cmp);
@ -361,7 +376,7 @@ static void cm_delete_item(CookieManagerPage *cmp)
selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(priv->treeview));
rows = gtk_tree_selection_get_selected_rows(selection, &model);
if (rows == NULL || g_list_length(rows) == 0) /* this should be the same */
if (cm_list_length(rows) == 0)
return;
/* as paths will change during delete, first create GtkTreeRowReferences for
@ -525,7 +540,7 @@ static void cm_tree_drag_data_get_cb(GtkWidget *widget, GdkDragContext *drag_con
selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(priv->treeview));
rows = gtk_tree_selection_get_selected_rows(selection, &model);
if (g_list_length(rows) != 1)
if (cm_list_length(rows) != 1)
{
cm_free_selection_list(rows, (GFunc) gtk_tree_path_free);
return;
@ -736,7 +751,7 @@ static void cm_tree_selection_changed_cb(GtkTreeSelection *selection, CookieMana
CookieManagerPagePrivate *priv = COOKIE_MANAGER_PAGE_GET_PRIVATE(cmp);
rows = gtk_tree_selection_get_selected_rows(selection, &model);
rows_len = g_list_length(rows);
rows_len = cm_list_length(rows);
if (rows_len == 0)
{
valid = FALSE;
@ -840,7 +855,7 @@ static gboolean cm_tree_button_press_event_cb(GtkWidget *widget, GdkEventButton
selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(widget));
rows = gtk_tree_selection_get_selected_rows(selection, &model);
if (g_list_length(rows) == 1)
if (cm_list_length(rows) == 1)
{
/* get iter */
gtk_tree_model_get_iter(model, &iter, (GtkTreePath*) (g_list_nth_data(rows, 0)));