Fixes a possible crash when closing windows.
[modest] / src / modest-dimming-rules-group.c
1 /* Copyright (c) 2006, Nokia Corporation
2  * All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions are
6  * met:
7  *
8  * * Redistributions of source code must retain the above copyright
9  *   notice, this list of conditions and the following disclaimer.
10  * * Redistributions in binary form must reproduce the above copyright
11  *   notice, this list of conditions and the following disclaimer in the
12  *   documentation and/or other materials provided with the distribution.
13  * * Neither the name of the Nokia Corporation nor the names of its
14  *   contributors may be used to endorse or promote products derived from
15  *   this software without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
18  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
19  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
20  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
21  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
22  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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24  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
25  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
26  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
27  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28  */
29
30 #include "modest-dimming-rules-group.h"
31 #include "modest-dimming-rules-group-priv.h"
32 #include "modest-dimming-rule.h"
33 #include "modest-platform.h"
34 #include "modest-ui-dimming-rules.h"
35
36 static void modest_dimming_rules_group_class_init (ModestDimmingRulesGroupClass *klass);
37 static void modest_dimming_rules_group_init       (ModestDimmingRulesGroup *obj);
38 static void modest_dimming_rules_group_finalize   (GObject *obj);
39
40 #ifndef MODEST_TOOLKIT_GTK
41 static void _insensitive_press_callback (GtkWidget *widget, gpointer user_data);
42 #endif
43
44 static void on_window_destroy (gpointer data,
45                                GObject *object);
46
47 static void _add_rule (ModestDimmingRulesGroup *self,
48                        ModestDimmingRule *rule,
49                        ModestWindow *window);
50
51 typedef struct _ModestDimmingRulesGroupPrivate ModestDimmingRulesGroupPrivate;
52 struct _ModestDimmingRulesGroupPrivate {        
53         ModestWindow *window;
54         gchar *name;
55         gboolean notifications_enabled;
56         GHashTable *rules_map;
57         GSList *widget_rules;
58 };
59
60
61 #define MODEST_DIMMING_RULES_GROUP_GET_PRIVATE(o)      (G_TYPE_INSTANCE_GET_PRIVATE((o), \
62                                                    MODEST_TYPE_DIMMING_RULES_GROUP, \
63                                                    ModestDimmingRulesGroupPrivate))
64
65 /* globals */
66 static GObjectClass *parent_class = NULL;
67
68 static void _execute_dimming_rule (gpointer key, gpointer value, gpointer user_data);
69 static void _execute_widget_dimming_rule (gpointer data, gpointer user_data);
70
71 GType
72 modest_dimming_rules_group_get_type (void)
73 {
74         static GType my_type = 0;
75         if (!my_type) {
76                 static const GTypeInfo my_info = {
77                         sizeof(ModestDimmingRulesGroupClass),
78                         NULL,           /* base init */
79                         NULL,           /* base finalize */
80                         (GClassInitFunc) modest_dimming_rules_group_class_init,
81                         NULL,           /* class finalize */
82                         NULL,           /* class data */
83                         sizeof(ModestDimmingRulesGroup),
84                         1,              /* n_preallocs */
85                         (GInstanceInitFunc) modest_dimming_rules_group_init,
86                         NULL
87                 };
88                 my_type = g_type_register_static (G_TYPE_OBJECT,
89                                                   "ModestDimmingRulesGroup",
90                                                   &my_info, 0);
91         }
92         return my_type;
93 }
94
95 static void
96 modest_dimming_rules_group_class_init (ModestDimmingRulesGroupClass *klass)
97 {
98         GObjectClass *gobject_class;
99         gobject_class = (GObjectClass*) klass;
100
101         parent_class            = g_type_class_peek_parent (klass);
102         gobject_class->finalize = modest_dimming_rules_group_finalize;
103
104         g_type_class_add_private (gobject_class, sizeof(ModestDimmingRulesGroupPrivate));
105 }
106
107 static void
108 modest_dimming_rules_group_init (ModestDimmingRulesGroup *obj)
109 {
110         ModestDimmingRulesGroupPrivate *priv;
111
112         priv = MODEST_DIMMING_RULES_GROUP_GET_PRIVATE(obj);
113
114         priv->name = NULL;
115         priv->window = NULL;
116         priv->notifications_enabled = FALSE;
117         priv->rules_map = g_hash_table_new_full ((GHashFunc) g_str_hash,
118                                                  (GEqualFunc) g_str_equal,
119                                                  (GDestroyNotify) g_free,
120                                                  (GDestroyNotify) g_object_unref);
121         priv->widget_rules = NULL;
122 }
123
124 static void
125 modest_dimming_rules_group_finalize (GObject *obj)
126 {
127         ModestDimmingRulesGroupPrivate *priv;
128
129         priv = MODEST_DIMMING_RULES_GROUP_GET_PRIVATE(obj);
130
131         g_object_weak_unref (G_OBJECT (priv->window), on_window_destroy, obj);
132
133         if (priv->name != NULL)
134                 g_free(priv->name);
135
136         if (priv->rules_map != NULL)
137                 g_hash_table_destroy (priv->rules_map);
138
139         if (priv->widget_rules != NULL)
140                 g_slist_foreach (priv->widget_rules, (GFunc) g_object_unref, NULL);
141
142         G_OBJECT_CLASS(parent_class)->finalize (obj);
143 }
144
145
146 ModestDimmingRulesGroup*
147 modest_dimming_rules_group_new(const gchar *group_name,
148                                gboolean notifications_enabled)
149 {
150         ModestDimmingRulesGroup *obj;
151         ModestDimmingRulesGroupPrivate *priv;
152                 
153         g_return_val_if_fail (group_name != NULL, NULL);
154
155         obj = MODEST_DIMMING_RULES_GROUP(g_object_new(MODEST_TYPE_DIMMING_RULES_GROUP, NULL));
156
157         priv = MODEST_DIMMING_RULES_GROUP_GET_PRIVATE(obj);
158         priv->name = g_strdup(group_name);
159         priv->notifications_enabled = notifications_enabled;
160
161         return obj;
162 }
163
164
165 gchar *
166 modest_dimming_rules_group_get_name (ModestDimmingRulesGroup *self) 
167 {
168         ModestDimmingRulesGroupPrivate *priv;
169         
170         g_return_val_if_fail (MODEST_IS_DIMMING_RULES_GROUP(self), NULL);
171
172         priv = MODEST_DIMMING_RULES_GROUP_GET_PRIVATE(self);
173         
174         return g_strdup (priv->name);
175 }
176
177 static void
178 _add_rule (ModestDimmingRulesGroup *self,
179            ModestDimmingRule *rule,
180            ModestWindow *window)
181 {
182         ModestDimmingRulesGroupPrivate *priv;
183         GtkWidget *widget = NULL;
184         const gchar *action_path = NULL;
185
186         g_return_if_fail (MODEST_IS_DIMMING_RULES_GROUP(self));
187         g_return_if_fail (MODEST_IS_WINDOW(window));
188         g_return_if_fail (MODEST_IS_DIMMING_RULE (rule));
189         
190         priv = MODEST_DIMMING_RULES_GROUP_GET_PRIVATE(self);
191
192         /* Set window to process dimming rules */
193         priv->window = MODEST_WINDOW (window);
194
195         widget = modest_dimming_rule_get_widget (rule);
196 #ifndef MODEST_TOOLKIT_GTK
197         /* Connect insensitive-presss handler to show notifications */
198         g_signal_connect (G_OBJECT (widget), "insensitive-press", 
199                           G_CALLBACK (_insensitive_press_callback), 
200                           rule);
201 #endif
202         /* Register new dimming rule */         
203         modest_dimming_rule_set_group (rule, self);
204         action_path = modest_dimming_rule_get_action_path (rule);
205         if (action_path)
206                 g_hash_table_insert (priv->rules_map, g_strdup(action_path), rule);
207         else
208                 priv->widget_rules = g_slist_prepend (priv->widget_rules, rule);
209 }
210
211 void
212 modest_dimming_rules_group_add_widget_rule (ModestDimmingRulesGroup *self,
213                                             GtkWidget *widget,
214                                             GCallback callback,
215                                             ModestWindow *window)
216 {
217         ModestDimmingRulesGroupPrivate *priv;
218         ModestDimmingRule *dim_rule = NULL;
219
220         g_return_if_fail (MODEST_IS_DIMMING_RULES_GROUP(self));
221         g_return_if_fail (GTK_IS_WIDGET (widget));
222         g_return_if_fail (MODEST_IS_WINDOW(window));
223         
224         priv = MODEST_DIMMING_RULES_GROUP_GET_PRIVATE(self);
225
226         /* Set window to process dimming rules */
227         priv->window = MODEST_WINDOW (window);
228
229         dim_rule = modest_dimming_rule_new_from_widget (priv->window,
230                                                         (ModestDimmingCallback) callback,
231                                                         widget);
232
233         _add_rule (self, dim_rule, window);
234 }
235
236 void
237 modest_dimming_rules_group_add_rules (ModestDimmingRulesGroup *self,
238                                       const ModestDimmingEntry modest_dimming_entries[],
239                                       guint n_elements,
240                                       ModestWindow *window)
241 {
242         ModestDimmingRulesGroupPrivate *priv;
243         ModestDimmingRule *dim_rule = NULL;
244         ModestDimmingEntry entry;
245         GtkWidget *widget = NULL;
246         gboolean unique = FALSE;
247         guint i;
248
249         g_return_if_fail (MODEST_IS_DIMMING_RULES_GROUP(self));
250         g_return_if_fail (modest_dimming_entries != NULL);
251         g_return_if_fail (n_elements > 0);
252         g_return_if_fail (MODEST_IS_WINDOW(window));
253         
254         priv = MODEST_DIMMING_RULES_GROUP_GET_PRIVATE(self);
255
256         /* Set window to process dimming rules */
257         priv->window = MODEST_WINDOW (window);
258         g_object_weak_ref (G_OBJECT (window), on_window_destroy, self);
259
260         /* Add dimming rules */
261         for (i=0; i < n_elements; i++) {
262                 entry = modest_dimming_entries[i]; 
263                 
264                 /* Check dimming_rule and action path are NOT NULL */
265                 if (entry.action_path == NULL) continue;
266                 if (entry.callback == NULL) continue;
267                 
268                 /* Check action path is unique */
269                 unique = g_hash_table_lookup (priv->rules_map, entry.action_path) == NULL;
270                 if (!unique) continue;
271
272                 /* Check action path is valid */
273                 widget = modest_window_get_action_widget (MODEST_WINDOW (window), entry.action_path);
274                 if (widget == NULL) continue;
275
276                 /* Create a new dimming rule */
277                 dim_rule = modest_dimming_rule_new (priv->window,
278                                                     (ModestDimmingCallback) entry.callback,
279                                                     entry.action_path);
280
281                 _add_rule (self, dim_rule, window);
282         }
283 }
284
285 gboolean 
286 modest_dimming_rules_group_notifications_enabled (ModestDimmingRulesGroup *self)
287 {
288         ModestDimmingRulesGroupPrivate *priv;
289
290         g_return_val_if_fail (MODEST_IS_DIMMING_RULES_GROUP(self), FALSE);
291         priv = MODEST_DIMMING_RULES_GROUP_GET_PRIVATE(self);
292         
293         return priv->notifications_enabled;
294
295
296 void 
297 modest_dimming_rules_group_execute (ModestDimmingRulesGroup *self) 
298 {
299         ModestDimmingRulesGroupPrivate *priv;
300         DimmedState *state = NULL;
301
302         g_return_if_fail (MODEST_IS_DIMMING_RULES_GROUP(self));
303         priv = MODEST_DIMMING_RULES_GROUP_GET_PRIVATE(self);
304
305         if (!priv->window)
306                 return;
307
308         /* Init dimming rules init data */
309         state = modest_ui_dimming_rules_define_dimming_state (priv->window);    
310         modest_window_set_dimming_state (priv->window, state);
311
312         /* execute group dimming rules */
313         g_hash_table_foreach (priv->rules_map, _execute_dimming_rule, NULL);
314         g_slist_foreach (priv->widget_rules, (GFunc) _execute_widget_dimming_rule, NULL);
315
316         /* Free dimming ruls init data */
317         modest_window_set_dimming_state (priv->window, NULL);
318 }
319
320
321 static void
322 _execute_dimming_rule (gpointer key, gpointer value, gpointer user_data)
323 {
324         g_return_if_fail (MODEST_IS_DIMMING_RULE (value));
325
326         /* Process dimming rule */
327         modest_dimming_rule_process (MODEST_DIMMING_RULE(value));
328 }
329
330 static void
331 _execute_widget_dimming_rule (gpointer data, gpointer user_data)
332 {
333         g_return_if_fail (MODEST_IS_DIMMING_RULE (data));
334
335         /* Process dimming rule */
336         modest_dimming_rule_process (MODEST_DIMMING_RULE(data));
337 }
338
339 #ifndef MODEST_TOOLKIT_GTK
340 static void
341 _insensitive_press_callback (GtkWidget *widget, gpointer user_data)
342 {
343         ModestDimmingRulesGroup *group = NULL;
344         ModestDimmingRule *rule = NULL;
345         gchar *notification = NULL;
346
347         g_return_if_fail (MODEST_IS_DIMMING_RULE (user_data));
348         rule = MODEST_DIMMING_RULE (user_data);
349
350         /* Check if this group has notification system enabled */
351         group = modest_dimming_rule_get_group (rule);
352         if (!modest_dimming_rules_group_notifications_enabled (group))
353                 goto frees;
354
355         /* Get specific notification */
356         notification = modest_dimming_rule_get_notification (rule);
357         if (notification == NULL)
358                 goto frees;
359
360         /* Notifications for dimmed items are not shown in Hildon2 */
361 #ifndef MODEST_TOOLKIT_HILDON2
362         /* Show notification banner */
363         modest_platform_information_banner (NULL, NULL, notification);
364 #endif
365
366         /* Free */
367  frees:
368         if (group != NULL)
369                 g_object_unref(group);
370         if (notification != NULL)
371                 g_free(notification);
372 }
373 #endif
374
375 static void
376 on_window_destroy (gpointer data,
377                    GObject *object)
378 {
379         ModestDimmingRulesGroup *self = MODEST_DIMMING_RULES_GROUP (data);
380         ModestDimmingRulesGroupPrivate *priv = MODEST_DIMMING_RULES_GROUP_GET_PRIVATE (self);
381
382         priv->window = NULL;
383 }