Clone the current rule before editing it so that changes can be undone.

2001-09-12  Jeffrey Stedfast  <fejj@ximian.com>

	* rule-editor.c (rule_edit): Clone the current rule before editing
	it so that changes can be undone.
	(edit_editor_clicked): If the user hit OK, replace the original
	rule with the new one.

	* vfolder-rule.c (vfolder_rule_finalise): Free the sources list.
	(rule_copy): Implemented.

	* filter-filter.c (rule_copy): Implemented.

	* filter-rule.c (filter_rule_copy): New convenience function to
	copy one rule "into" another.
	(rule_copy): Default implementation.
	(filter_rule_clone): Use filter_rule_copy() internally to get rid
	of the nastiness/slowness of xml encoding and then decoding.

svn path=/trunk/; revision=12787

1 files changed, 29 insertions, 0 deletions

diff --git a/filter/filter-filter.c b/filter/filter-filter.c
index 145be391dd..50d29d2369 100644
--- a/filter/filter-filter.c
+++ b/filter/filter-filter.c
@@ -42,6 +42,7 @@
 static int validate(FilterRule *);
 static xmlNodePtr xml_encode (FilterRule *);
 static int xml_decode (FilterRule *, xmlNodePtr, struct _RuleContext *f);
+static void rule_copy (FilterRule *dest, FilterRule *src);
 /*static void build_code(FilterRule *, GString *out);*/
 static GtkWidget *get_widget (FilterRule *fr, struct _RuleContext *f);
 
@@ -100,6 +101,7 @@ filter_filter_class_init (FilterFilterClass *class)
 	filter_rule->xml_encode = xml_encode;
 	filter_rule->xml_decode = xml_decode;
 	/*filter_rule->build_code = build_code;*/
+	filter_rule->copy = rule_copy;
 	filter_rule->get_widget = get_widget;
 	
 	/* signals */
@@ -269,6 +271,33 @@ xml_decode (FilterRule *fr, xmlNodePtr node, struct _RuleContext *f)
 	return 0;
 }
 
+static void
+rule_copy (FilterRule *dest, FilterRule *src)
+{
+	FilterFilter *fdest, *fsrc;
+	GList *node;
+	
+	fdest = (FilterFilter *) dest;
+	fsrc = (FilterFilter *) src;
+	
+	if (fdest->actions) {
+		g_list_foreach (fdest->actions, (GFunc) gtk_object_unref, NULL);
+		g_list_free (fdest->actions);
+		fdest->actions = NULL;
+	}
+	
+	node = fsrc->actions;
+	while (node) {
+		FilterPart *part = node->data;
+		
+		gtk_object_ref (GTK_OBJECT (part));
+		fdest->actions = g_list_append (fdest->actions, part);
+		node = node->next;
+	}
+	
+	((FilterRuleClass *)(parent_class))->copy (dest, src);
+}
+
 /*static void build_code(FilterRule *fr, GString *out)
 {
         return ((FilterRuleClass *)(parent_class))->build_code(fr, out);