Changed the destroy function to disconnect from signals before unrefing

2000-03-08  Christopher James Lahey  <clahey@helixcode.com>

        * e-table.c: Changed the destroy function to disconnect from
        signals before unrefing the objects the sinnals are on.  Changed
        the destroy function to match the objects and signal ids properly
        in its disconnect section.

        * e-table-item.c, e-table-item.h: Changed this to do follow the
        canvas rules better.

        * e-table-header-item.c, e-table-header-item.h: Made
        ETableHeaderItem connect to the "sort_info_changed" on its
        ETableSortInfo instead of just manually redrawing itself.  Fixed
        the update function a bit to follow the canvas rules a bit better.

svn path=/trunk/; revision=2087

1 files changed, 34 insertions, 8 deletions

diff --git a/widgets/table/e-table-header-item.c b/widgets/table/e-table-header-item.c
index b8fe005753..e6001d24de 100644
--- a/widgets/table/e-table-header-item.c
+++ b/widgets/table/e-table-header-item.c
@@ -75,8 +75,12 @@ ethi_destroy (GtkObject *object){
 	ETableHeaderItem *ethi = E_TABLE_HEADER_ITEM (object);
 	
 	ethi_drop_table_header (ethi);
-	if ( ethi->sort_info )
+
+	if ( ethi->sort_info ) {
+		if ( ethi->sort_info_changed_id )
+			gtk_signal_disconnect(GTK_OBJECT(ethi->sort_info), ethi->sort_info_changed_id);
 		gtk_object_unref(GTK_OBJECT(ethi->sort_info));
+	}
 	
 	if (GTK_OBJECT_CLASS (ethi_parent_class)->destroy)
 		(*GTK_OBJECT_CLASS (ethi_parent_class)->destroy) (object);
@@ -90,12 +94,20 @@ ethi_update (GnomeCanvasItem *item, double *affine, ArtSVP *clip_path, int flags
 	if (GNOME_CANVAS_ITEM_CLASS (ethi_parent_class)->update)
 		(*GNOME_CANVAS_ITEM_CLASS (ethi_parent_class)->update)(item, affine, clip_path, flags);
 
-	item->x1 = ethi->x1;
-	item->y1 = ethi->y1;
-	item->x2 = ethi->x1 + ethi->width;
-	item->y2 = ethi->y1 + ethi->height;
-
-	gnome_canvas_group_child_bounds (GNOME_CANVAS_GROUP (item->parent), item);
+	if ( item->x1 != ethi->x1 ||
+	     item->y1 != ethi->y1 ||
+	     item->x2 != ethi->x1 + ethi->width ||
+	     item->y2 != ethi->y1 + ethi->height )
+		{
+			gnome_canvas_request_redraw(item->canvas, item->x1, item->y1, item->x2, item->y2);
+			item->x1 = ethi->x1;
+			item->y1 = ethi->y1;
+			item->x2 = ethi->x1 + ethi->width;
+			item->y2 = ethi->y1 + ethi->height;
+
+			gnome_canvas_group_child_bounds (GNOME_CANVAS_GROUP (item->parent), item);
+		}
+	gnome_canvas_request_redraw(item->canvas, item->x1, item->y1, item->x2, item->y2);
 }
 
 static void
@@ -162,6 +174,12 @@ ethi_add_table_header (ETableHeaderItem *ethi, ETableHeader *header)
 }
 
 static void
+ethi_sort_info_changed (ETableSortInfo *sort_info, ETableHeaderItem *ethi)
+{
+	gnome_canvas_item_request_update (GNOME_CANVAS_ITEM(ethi));
+}
+
+static void
 ethi_set_arg (GtkObject *o, GtkArg *arg, guint arg_id)
 {
 	GnomeCanvasItem *item;
@@ -189,8 +207,15 @@ ethi_set_arg (GtkObject *o, GtkArg *arg, guint arg_id)
 		break;
 
 	case ARG_SORT_INFO:
+		if ( ethi->sort_info ) {
+			if ( ethi->sort_info_changed_id )
+				gtk_signal_disconnect(GTK_OBJECT(ethi->sort_info), ethi->sort_info_changed_id);
+			gtk_object_unref(GTK_OBJECT(ethi->sort_info));
+		}
 		ethi->sort_info = GTK_VALUE_POINTER (*arg);
 		gtk_object_ref(GTK_OBJECT(ethi->sort_info));
+		ethi->sort_info_changed_id = gtk_signal_connect(GTK_OBJECT(ethi->sort_info), "sort_info_changed",
+								GTK_SIGNAL_FUNC(ethi_sort_info_changed), ethi);
 		break;
 		
 	}
@@ -934,7 +959,6 @@ ethi_event (GnomeCanvasItem *item, GdkEvent *e)
 				}
 			}
 			e_table_sort_info_changed(ethi->sort_info);
-			ethi_request_redraw (ethi);
 		}
 		if (needs_ungrab)
 			gnome_canvas_item_ungrab (item, e->button.time);
@@ -1007,6 +1031,8 @@ ethi_init (GnomeCanvasItem *item)
 	
 	ethi->sort_info = NULL;
 
+	ethi->sort_info_changed_id = 0;
+
 	ethi->group_indent_width = 0;
 }