/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) version 3.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with the program; if not, see <http://www.gnu.org/licenses/>
*
*
* Authors:
* Not Zed <notzed@lostzed.mmc.com.au>
* Jeffrey Stedfast <fejj@ximian.com>
*
* Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <string.h>
#include "em-filter-context.h"
#include "em-filter-rule.h"
#include "filter/filter-option.h"
#include "filter/filter-int.h"
#include "em-filter-source-element.h"
/* For poking into filter-folder guts */
#include "em-filter-folder-element.h"
#define d(x)
static void em_filter_context_class_init(EMFilterContextClass *klass);
static void em_filter_context_init(EMFilterContext *fc);
static void em_filter_context_finalise(GObject *obj);
static GList *filter_rename_uri(RuleContext *rc, const char *olduri, const char *newuri, GCompareFunc cmp);
static GList *filter_delete_uri(RuleContext *rc, const char *uri, GCompareFunc cmp);
static FilterElement *filter_new_element(RuleContext *rc, const char *name);
static RuleContextClass *parent_class = NULL;
GType
em_filter_context_get_type(void)
{
static GType type = 0;
if (!type) {
static const GTypeInfo info = {
sizeof(EMFilterContextClass),
NULL, /* base_class_init */
NULL, /* base_class_finalize */
(GClassInitFunc) em_filter_context_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof(EMFilterContext),
0, /* n_preallocs */
(GInstanceInitFunc) em_filter_context_init,
};
type = g_type_register_static(RULE_TYPE_CONTEXT, "EMFilterContext", &info, 0);
}
return type;
}
static void
em_filter_context_class_init(EMFilterContextClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS(klass);
RuleContextClass *rc_class = RULE_CONTEXT_CLASS(klass);
parent_class = g_type_class_ref(RULE_TYPE_CONTEXT);
object_class->finalize = em_filter_context_finalise;
/* override methods */
rc_class->rename_uri = filter_rename_uri;
rc_class->delete_uri = filter_delete_uri;
rc_class->new_element = filter_new_element;
}
static void
em_filter_context_init(EMFilterContext *fc)
{
rule_context_add_part_set((RuleContext *) fc, "partset", filter_part_get_type(),
rule_context_add_part, rule_context_next_part);
rule_context_add_part_set((RuleContext *) fc, "actionset", filter_part_get_type(),
(RCPartFunc) em_filter_context_add_action,
(RCNextPartFunc) em_filter_context_next_action);
rule_context_add_rule_set((RuleContext *) fc, "ruleset", em_filter_rule_get_type(),
(RCRuleFunc) rule_context_add_rule, rule_context_next_rule);
}
static void
em_filter_context_finalise(GObject *obj)
{
EMFilterContext *fc = (EMFilterContext *)obj;
g_list_foreach(fc->actions, (GFunc)g_object_unref, NULL);
g_list_free(fc->actions);
G_OBJECT_CLASS(parent_class)->finalize(obj);
}
/**
* em_filter_context_new:
*
* Create a new EMFilterContext object.
*
* Return value: A new #EMFilterContext object.
**/
EMFilterContext *
em_filter_context_new(void)
{
return (EMFilterContext *) g_object_new(em_filter_context_get_type(), NULL, NULL);
}
void
em_filter_context_add_action(EMFilterContext *fc, FilterPart *action)
{
d(printf("find action : "));
fc->actions = g_list_append(fc->actions, action);
}
FilterPart *
em_filter_context_find_action(EMFilterContext *fc, const char *name)
{
d(printf("find action : "));
return filter_part_find_list(fc->actions, name);
}
FilterPart *
em_filter_context_create_action(EMFilterContext *fc, const char *name)
{
FilterPart *part;
if ((part = em_filter_context_find_action(fc, name)))
return filter_part_clone(part);
return NULL;
}
FilterPart *
em_filter_context_next_action(EMFilterContext *fc, FilterPart *last)
{
return filter_part_next_list(fc->actions, last);
}
/* We search for any folders in our actions list that need updating, update them */
static GList *
filter_rename_uri(RuleContext *rc, const char *olduri, const char *newuri, GCompareFunc cmp)
{
FilterRule *rule;
GList *l, *el;
FilterPart *action;
FilterElement *element;
int count = 0;
GList *changed = NULL;
d(printf("uri '%s' renamed to '%s'\n", olduri, newuri));
/* For all rules, for all actions, for all elements, rename any folder elements */
/* Yes we could do this inside each part itself, but not today */
rule = NULL;
while ((rule = rule_context_next_rule(rc, rule, NULL))) {
int rulecount = 0;
d(printf("checking rule '%s'\n", rule->name));
l = EM_FILTER_RULE(rule)->actions;
while (l) {
action = l->data;
d(printf("checking action '%s'\n", action->name));
el = action->elements;
while (el) {
element = el->data;
d(printf("checking element '%s'\n", element->name));
if (EM_IS_FILTER_FOLDER_ELEMENT(element)) {
d(printf(" is folder, existing uri = '%s'\n",
FILTER_FOLDER(element)->uri));
}
if (EM_IS_FILTER_FOLDER_ELEMENT(element)
&& cmp(((EMFilterFolderElement *)element)->uri, olduri)) {
d(printf(" Changed!\n"));
em_filter_folder_element_set_value((EMFilterFolderElement *)element, newuri);
rulecount++;
}
el = el->next;
}
l = l->next;
}
if (rulecount) {
changed = g_list_append(changed, g_strdup(rule->name));
filter_rule_emit_changed(rule);
}
count += rulecount;
}
/* might need to call parent class, if it did anything ... parent_class->rename_uri(f, olduri, newuri, cmp); */
return changed;
}
static GList *
filter_delete_uri(RuleContext *rc, const char *uri, GCompareFunc cmp)
{
/* We basically do similar to above, but when we find it,
Remove the action, and if thats the last action, this might create an empty rule? remove the rule? */
FilterRule *rule;
GList *l, *el;
FilterPart *action;
FilterElement *element;
int count = 0;
GList *deleted = NULL;
d(printf("uri '%s' deleted\n", uri));
/* For all rules, for all actions, for all elements, check deleted folder elements */
/* Yes we could do this inside each part itself, but not today */
rule = NULL;
while ((rule = rule_context_next_rule(rc, rule, NULL))) {
int recorded = 0;
d(printf("checking rule '%s'\n", rule->name));
l = EM_FILTER_RULE(rule)->actions;
while (l) {
action = l->data;
d(printf("checking action '%s'\n", action->name));
el = action->elements;
while (el) {
element = el->data;
d(printf("checking element '%s'\n", element->name));
if (EM_IS_FILTER_FOLDER_ELEMENT(element)) {
d(printf(" is folder, existing uri = '%s'\n",
FILTER_FOLDER(element)->uri));
}
if (EM_IS_FILTER_FOLDER_ELEMENT(element)
&& cmp(((EMFilterFolderElement *)element)->uri, uri)) {
d(printf(" Deleted!\n"));
/* check if last action, if so, remove rule instead? */
l = l->next;
em_filter_rule_remove_action((EMFilterRule *)rule, action);
g_object_unref(action);
count++;
if (!recorded)
deleted = g_list_append(deleted, g_strdup(rule->name));
goto next_action;
}
el = el->next;
}
l = l->next;
next_action:
;
}
}
/* TODO: could call parent and merge lists */
return deleted;
}
static FilterElement *
filter_new_element(RuleContext *rc, const char *type)
{
if (!strcmp(type, "folder")) {
return (FilterElement *) em_filter_folder_element_new();
} else if (!strcmp(type, "system-flag")) {
return (FilterElement *) filter_option_new();
} else if (!strcmp(type, "score")) {
return (FilterElement *) filter_int_new_type("score", -3, 3);
} else if (!strcmp(type, "source")) {
return (FilterElement *) em_filter_source_element_new();
} else {
return parent_class->new_element(rc, type);
}
}
