aboutsummaryrefslogtreecommitdiffstats
path: root/mail/em-filter-context.c
blob: 4817d896b5593b058a8488ecf9d33cbd5a45183f (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
/*
 * 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 gchar *olduri, const gchar *newuri, GCompareFunc cmp);
static GList *filter_delete_uri(RuleContext *rc, const gchar *uri, GCompareFunc cmp);
static FilterElement *filter_new_element(RuleContext *rc, const gchar *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 gchar *name)
{
    d(printf("find action : "));
    return filter_part_find_list(fc->actions, name);
}

FilterPart *
em_filter_context_create_action(EMFilterContext *fc, const gchar *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 gchar *olduri, const gchar *newuri, GCompareFunc cmp)
{
    FilterRule *rule;
    GList *l, *el;
    FilterPart *action;
    FilterElement *element;
    gint 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))) {
        gint 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 gchar *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;
    gint 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))) {
        gint 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 gchar *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);
    }
}