1 /*
2 * gal-view-etable.c
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU Lesser General Public License as published by
6 * the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
10 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
11 * for more details.
12 *
13 * You should have received a copy of the GNU Lesser General Public License
14 * along with this program; if not, see <http://www.gnu.org/licenses/>.
15 *
16 */
17
18 #include "gal-view-etable.h"
19
20 #define GAL_VIEW_ETABLE_GET_PRIVATE(obj) \
21 (G_TYPE_INSTANCE_GET_PRIVATE \
22 ((obj), GAL_TYPE_VIEW_ETABLE, GalViewEtablePrivate))
23
24 struct _GalViewEtablePrivate {
25 gchar *state_filename;
26
27 ETable *table;
28 guint table_state_changed_id;
29
30 ETree *tree;
31 guint tree_state_changed_id;
32 };
33
G_DEFINE_TYPE(GalViewEtable,gal_view_etable,GAL_TYPE_VIEW)34 G_DEFINE_TYPE (GalViewEtable, gal_view_etable, GAL_TYPE_VIEW)
35
36 static void
37 detach_table (GalViewEtable *view)
38 {
39 if (view->priv->table_state_changed_id > 0) {
40 g_signal_handler_disconnect (
41 view->priv->table,
42 view->priv->table_state_changed_id);
43 view->priv->table_state_changed_id = 0;
44 }
45
46 g_clear_object (&view->priv->table);
47 }
48
49 static void
detach_tree(GalViewEtable * view)50 detach_tree (GalViewEtable *view)
51 {
52 if (view->priv->tree_state_changed_id > 0) {
53 g_signal_handler_disconnect (
54 view->priv->tree,
55 view->priv->tree_state_changed_id);
56 view->priv->tree_state_changed_id = 0;
57 }
58
59 g_clear_object (&view->priv->tree);
60 }
61
62 static void
gal_view_etable_load(GalView * view,const gchar * filename)63 gal_view_etable_load (GalView *view,
64 const gchar *filename)
65 {
66 GalViewEtable *view_etable;
67
68 view_etable = GAL_VIEW_ETABLE (view);
69
70 /* Just note the filename. We'll do the actual load
71 * when an ETable or ETree gets attached since we need
72 * its ETableSpecification to create an ETableState. */
73 g_free (view_etable->priv->state_filename);
74 view_etable->priv->state_filename = g_strdup (filename);
75 }
76
77 static void
gal_view_etable_save(GalView * view,const gchar * filename)78 gal_view_etable_save (GalView *view,
79 const gchar *filename)
80 {
81 GalViewEtable *view_etable;
82
83 view_etable = GAL_VIEW_ETABLE (view);
84
85 if (view_etable->priv->table != NULL) {
86 ETableState *state;
87
88 state = e_table_get_state_object (view_etable->priv->table);
89 e_table_state_save_to_file (state, filename);
90 g_object_unref (state);
91 }
92
93 if (view_etable->priv->tree != NULL) {
94 ETableState *state;
95
96 state = e_tree_get_state_object (view_etable->priv->tree);
97 e_table_state_save_to_file (state, filename);
98 g_object_unref (state);
99 }
100
101 /* Remember the filename, it may eventually change */
102 gal_view_etable_load (view, filename);
103 }
104
105 static GalView *
gal_view_etable_clone(GalView * view)106 gal_view_etable_clone (GalView *view)
107 {
108 GalViewEtable *gve;
109 GalView *clone;
110
111 /* Chain up to parent's clone() method. */
112 clone = GAL_VIEW_CLASS (gal_view_etable_parent_class)->clone (view);
113
114 gve = GAL_VIEW_ETABLE (view);
115
116 /* do this before setting state_filename, to not overwrite current
117 * state changes in the 'attach' function */
118 if (gve->priv->table)
119 gal_view_etable_attach_table (GAL_VIEW_ETABLE (clone), gve->priv->table);
120 else if (gve->priv->tree)
121 gal_view_etable_attach_tree (GAL_VIEW_ETABLE (clone), gve->priv->tree);
122
123 GAL_VIEW_ETABLE (clone)->priv->state_filename =
124 g_strdup (gve->priv->state_filename);
125
126 return clone;
127 }
128
129 static void
gal_view_etable_dispose(GObject * object)130 gal_view_etable_dispose (GObject *object)
131 {
132 GalViewEtable *view = GAL_VIEW_ETABLE (object);
133
134 gal_view_etable_detach (view);
135
136 /* Chain up to parent's dispose() method. */
137 G_OBJECT_CLASS (gal_view_etable_parent_class)->dispose (object);
138 }
139
140 static void
gal_view_etable_finalize(GObject * object)141 gal_view_etable_finalize (GObject *object)
142 {
143 GalViewEtable *view = GAL_VIEW_ETABLE (object);
144
145 g_free (view->priv->state_filename);
146
147 /* Chain up to parent's finalize() method. */
148 G_OBJECT_CLASS (gal_view_etable_parent_class)->finalize (object);
149 }
150
151 static void
gal_view_etable_class_init(GalViewEtableClass * class)152 gal_view_etable_class_init (GalViewEtableClass *class)
153 {
154 GObjectClass *object_class;
155 GalViewClass *gal_view_class;
156
157 g_type_class_add_private (class, sizeof (GalViewEtablePrivate));
158
159 object_class = G_OBJECT_CLASS (class);
160 object_class->dispose = gal_view_etable_dispose;
161 object_class->finalize = gal_view_etable_finalize;
162
163 gal_view_class = GAL_VIEW_CLASS (class);
164 gal_view_class->type_code = "etable";
165 gal_view_class->load = gal_view_etable_load;
166 gal_view_class->save = gal_view_etable_save;
167 gal_view_class->clone = gal_view_etable_clone;
168 }
169
170 static void
gal_view_etable_init(GalViewEtable * view)171 gal_view_etable_init (GalViewEtable *view)
172 {
173 view->priv = GAL_VIEW_ETABLE_GET_PRIVATE (view);
174 }
175
176 /**
177 * gal_view_etable_new
178 * @title: The name of the new view.
179 *
180 * Returns a new GalViewEtable. This is primarily for use by
181 * GalViewFactoryEtable.
182 *
183 * Returns: The new GalViewEtable.
184 */
185 GalView *
gal_view_etable_new(const gchar * title)186 gal_view_etable_new (const gchar *title)
187 {
188 return g_object_new (GAL_TYPE_VIEW_ETABLE, "title", title, NULL);
189 }
190
191 static void
table_state_changed(ETable * table,GalView * view)192 table_state_changed (ETable *table,
193 GalView *view)
194 {
195 gal_view_changed (view);
196 }
197
198 static void
tree_state_changed(ETree * tree,GalView * view)199 tree_state_changed (ETree *tree,
200 GalView *view)
201 {
202 gal_view_changed (view);
203 }
204
205 void
gal_view_etable_attach_table(GalViewEtable * view,ETable * table)206 gal_view_etable_attach_table (GalViewEtable *view,
207 ETable *table)
208 {
209 g_return_if_fail (GAL_IS_VIEW_ETABLE (view));
210 g_return_if_fail (E_IS_TABLE (table));
211
212 gal_view_etable_detach (view);
213
214 /* Load the state file now. */
215 if (view->priv->state_filename != NULL) {
216 ETableSpecification *specification;
217 ETableState *state;
218
219 specification = table->spec;
220 state = e_table_state_new (specification);
221 e_table_state_load_from_file (
222 state, view->priv->state_filename);
223
224 e_table_set_state_object (table, state);
225
226 g_object_unref (state);
227 }
228
229 view->priv->table = g_object_ref (table);
230
231 view->priv->table_state_changed_id = g_signal_connect (
232 view->priv->table, "state_change",
233 G_CALLBACK (table_state_changed), view);
234 }
235
236 void
gal_view_etable_attach_tree(GalViewEtable * view,ETree * tree)237 gal_view_etable_attach_tree (GalViewEtable *view,
238 ETree *tree)
239 {
240 g_return_if_fail (GAL_IS_VIEW_ETABLE (view));
241 g_return_if_fail (E_IS_TREE (tree));
242
243 gal_view_etable_detach (view);
244
245 /* Load the state file now. */
246 if (view->priv->state_filename != NULL) {
247 ETableSpecification *specification;
248 ETableState *state;
249
250 specification = e_tree_get_spec (tree);
251 state = e_table_state_new (specification);
252 e_table_state_load_from_file (
253 state, view->priv->state_filename);
254
255 e_tree_set_state_object (tree, state);
256
257 g_object_unref (state);
258 }
259
260 view->priv->tree = g_object_ref (tree);
261
262 view->priv->tree_state_changed_id = g_signal_connect (
263 view->priv->tree, "state_change",
264 G_CALLBACK (tree_state_changed), view);
265 }
266
267 void
gal_view_etable_detach(GalViewEtable * view)268 gal_view_etable_detach (GalViewEtable *view)
269 {
270 g_return_if_fail (GAL_IS_VIEW_ETABLE (view));
271
272 if (view->priv->table != NULL)
273 detach_table (view);
274 if (view->priv->tree != NULL)
275 detach_tree (view);
276 }
277
278 ETable *
gal_view_etable_get_table(GalViewEtable * view)279 gal_view_etable_get_table (GalViewEtable *view)
280 {
281 g_return_val_if_fail (GAL_IS_VIEW_ETABLE (view), NULL);
282
283 return view->priv->table;
284 }
285
286 ETree *
gal_view_etable_get_tree(GalViewEtable * view)287 gal_view_etable_get_tree (GalViewEtable *view)
288 {
289 g_return_val_if_fail (GAL_IS_VIEW_ETABLE (view), NULL);
290
291 return view->priv->tree;
292 }
293