1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- */
2 /*
3 * Copyright (C) 2001-2003 Mikael Hallendal <micke@imendio.com>
4 * Copyright (C) 2003 CodeFactory AB
5 * Copyright (C) 2008 Imendio AB
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of the
10 * License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public
18 * License along with this program; if not, write to the
19 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 * Boston, MA 02111-1307, USA.
21 */
22
23 #include "config.h"
24 #include <string.h>
25 #include <gdk/gdkkeysyms.h>
26 #include <gtk/gtk.h>
27
28 #include "dh-marshal.h"
29 #include "dh-book-tree.h"
30 #include "dh-book.h"
31
32 typedef struct {
33 const gchar *uri;
34 gboolean found;
35 GtkTreeIter iter;
36 GtkTreePath *path;
37 } FindURIData;
38
39 typedef struct {
40 GtkTreeStore *store;
41 DhBookManager *book_manager;
42 DhLink *selected_link;
43 } DhBookTreePriv;
44
45 static void dh_book_tree_class_init (DhBookTreeClass *klass);
46 static void dh_book_tree_init (DhBookTree *tree);
47 static void book_tree_add_columns (DhBookTree *tree);
48 static void book_tree_setup_selection (DhBookTree *tree);
49 static void book_tree_populate_tree (DhBookTree *tree);
50 static void book_tree_insert_node (DhBookTree *tree,
51 GNode *node,
52 GtkTreeIter *parent_iter);
53 static void book_tree_selection_changed_cb (GtkTreeSelection *selection,
54 DhBookTree *tree);
55
56 enum {
57 LINK_SELECTED,
58 LAST_SIGNAL
59 };
60
61 enum {
62 COL_TITLE,
63 COL_LINK,
64 COL_WEIGHT,
65 N_COLUMNS
66 };
67
68 G_DEFINE_TYPE (DhBookTree, dh_book_tree, GTK_TYPE_TREE_VIEW);
69
70 #define GET_PRIVATE(instance) G_TYPE_INSTANCE_GET_PRIVATE \
71 (instance, DH_TYPE_BOOK_TREE, DhBookTreePriv);
72
73 static gint signals[LAST_SIGNAL] = { 0 };
74
75 static void
book_tree_finalize(GObject * object)76 book_tree_finalize (GObject *object)
77 {
78 DhBookTreePriv *priv = GET_PRIVATE (object);
79
80 g_object_unref (priv->store);
81 g_object_unref (priv->book_manager);
82
83 G_OBJECT_CLASS (dh_book_tree_parent_class)->finalize (object);
84 }
85
86 static void
dh_book_tree_class_init(DhBookTreeClass * klass)87 dh_book_tree_class_init (DhBookTreeClass *klass)
88 {
89 GObjectClass *object_class = G_OBJECT_CLASS (klass);
90
91 object_class->finalize = book_tree_finalize;
92
93 signals[LINK_SELECTED] =
94 g_signal_new ("link-selected",
95 G_TYPE_FROM_CLASS (klass),
96 G_SIGNAL_RUN_LAST,
97 0,
98 NULL, NULL,
99 _dh_marshal_VOID__POINTER,
100 G_TYPE_NONE,
101 1, G_TYPE_POINTER);
102
103 g_type_class_add_private (klass, sizeof (DhBookTreePriv));
104 }
105
106 static void
dh_book_tree_init(DhBookTree * tree)107 dh_book_tree_init (DhBookTree *tree)
108 {
109 DhBookTreePriv *priv;
110
111 priv = GET_PRIVATE (tree);
112
113 priv->store = gtk_tree_store_new (N_COLUMNS,
114 G_TYPE_STRING,
115 G_TYPE_POINTER,
116 PANGO_TYPE_WEIGHT);
117 priv->selected_link = NULL;
118 gtk_tree_view_set_model (GTK_TREE_VIEW (tree),
119 GTK_TREE_MODEL (priv->store));
120
121 gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (tree), FALSE);
122
123 book_tree_add_columns (tree);
124
125 book_tree_setup_selection (tree);
126 }
127
128 static void
book_tree_add_columns(DhBookTree * tree)129 book_tree_add_columns (DhBookTree *tree)
130 {
131 GtkCellRenderer *cell;
132 GtkTreeViewColumn *column;
133
134 column = gtk_tree_view_column_new ();
135
136 cell = gtk_cell_renderer_text_new ();
137 g_object_set (cell,
138 "ellipsize", PANGO_ELLIPSIZE_END,
139 NULL);
140 gtk_tree_view_column_pack_start (column, cell, TRUE);
141 gtk_tree_view_column_set_attributes (column, cell,
142 "text", COL_TITLE,
143 "weight", COL_WEIGHT,
144 NULL);
145
146 gtk_tree_view_append_column (GTK_TREE_VIEW (tree), column);
147 }
148
149 static void
book_tree_setup_selection(DhBookTree * tree)150 book_tree_setup_selection (DhBookTree *tree)
151 {
152 GtkTreeSelection *selection;
153
154 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree));
155
156 gtk_tree_selection_set_mode (selection, GTK_SELECTION_BROWSE);
157
158 g_signal_connect (selection, "changed",
159 G_CALLBACK (book_tree_selection_changed_cb),
160 tree);
161 }
162
163 static void
book_tree_populate_tree(DhBookTree * tree)164 book_tree_populate_tree (DhBookTree *tree)
165 {
166 DhBookTreePriv *priv = GET_PRIVATE (tree);
167 GList *l;
168
169 gtk_tree_store_clear (priv->store);
170
171 for (l = dh_book_manager_get_books (priv->book_manager);
172 l;
173 l = g_list_next (l)) {
174 DhBook *book = DH_BOOK (l->data);
175 GNode *node;
176
177 node = dh_book_get_tree (book);
178 while(node) {
179 book_tree_insert_node (tree, node, NULL);
180 node = g_node_next_sibling (node);
181 }
182 }
183 }
184
185 static void
book_manager_disabled_book_list_changed_cb(DhBookManager * book_manager,gpointer user_data)186 book_manager_disabled_book_list_changed_cb (DhBookManager *book_manager,
187 gpointer user_data)
188 {
189 DhBookTree *tree = user_data;
190 book_tree_populate_tree (tree);
191 }
192
193 static void
book_tree_insert_node(DhBookTree * tree,GNode * node,GtkTreeIter * parent_iter)194 book_tree_insert_node (DhBookTree *tree,
195 GNode *node,
196 GtkTreeIter *parent_iter)
197
198 {
199 DhBookTreePriv *priv = GET_PRIVATE (tree);
200 DhLink *link;
201 GtkTreeIter iter;
202 PangoWeight weight;
203 GNode *child;
204
205 link = node->data;
206
207 gtk_tree_store_append (priv->store, &iter, parent_iter);
208
209 if (dh_link_get_link_type (link) == DH_LINK_TYPE_BOOK) {
210 weight = PANGO_WEIGHT_BOLD;
211 } else {
212 weight = PANGO_WEIGHT_NORMAL;
213 }
214
215 gtk_tree_store_set (priv->store, &iter,
216 COL_TITLE, dh_link_get_name (link),
217 COL_LINK, link,
218 COL_WEIGHT, weight,
219 -1);
220
221 for (child = g_node_first_child (node);
222 child;
223 child = g_node_next_sibling (child)) {
224 book_tree_insert_node (tree, child, &iter);
225 }
226 }
227
228 static void
book_tree_selection_changed_cb(GtkTreeSelection * selection,DhBookTree * tree)229 book_tree_selection_changed_cb (GtkTreeSelection *selection,
230 DhBookTree *tree)
231 {
232 DhBookTreePriv *priv = GET_PRIVATE (tree);
233 GtkTreeIter iter;
234
235 if (gtk_tree_selection_get_selected (selection, NULL, &iter)) {
236 DhLink *link;
237
238 gtk_tree_model_get (GTK_TREE_MODEL (priv->store),
239 &iter,
240 COL_LINK, &link,
241 -1);
242 if (link != priv->selected_link) {
243 g_signal_emit (tree, signals[LINK_SELECTED], 0, link);
244 }
245 priv->selected_link = link;
246 }
247 }
248
249 GtkWidget *
dh_book_tree_new(DhBookManager * book_manager)250 dh_book_tree_new (DhBookManager *book_manager)
251 {
252 DhBookTree *tree;
253 DhBookTreePriv *priv;
254 GtkTreeSelection *selection;
255 GtkTreeIter iter;
256 DhLink *link;
257
258 tree = g_object_new (DH_TYPE_BOOK_TREE, NULL);
259 priv = GET_PRIVATE (tree);
260
261 priv->book_manager = g_object_ref (book_manager);
262 g_signal_connect (priv->book_manager,
263 "disabled-book-list-updated",
264 G_CALLBACK (book_manager_disabled_book_list_changed_cb),
265 tree);
266
267 book_tree_populate_tree (tree);
268
269 /* Mark the first item as selected, or it would get automatically
270 * selected when the treeview will get focus; but that's not even
271 * enough as a selection changed would still be emitted when there
272 * is no change, hence the manual tracking of selection in
273 * selected_link.
274 * https://bugzilla.gnome.org/show_bug.cgi?id=492206
275 */
276 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree));
277 g_signal_handlers_block_by_func (selection,
278 book_tree_selection_changed_cb,
279 tree);
280 gtk_tree_model_get_iter_first ( GTK_TREE_MODEL (priv->store), &iter);
281 gtk_tree_model_get (GTK_TREE_MODEL (priv->store),
282 &iter, COL_LINK, &link, -1);
283 priv->selected_link = link;
284 gtk_tree_selection_select_iter (selection, &iter);
285 g_signal_handlers_unblock_by_func (selection,
286 book_tree_selection_changed_cb,
287 tree);
288
289 return GTK_WIDGET (tree);
290 }
291
292 static gboolean
book_tree_find_uri_foreach(GtkTreeModel * model,GtkTreePath * path,GtkTreeIter * iter,FindURIData * data)293 book_tree_find_uri_foreach (GtkTreeModel *model,
294 GtkTreePath *path,
295 GtkTreeIter *iter,
296 FindURIData *data)
297 {
298 DhLink *link;
299 gchar *link_uri;
300
301 gtk_tree_model_get (model, iter,
302 COL_LINK, &link,
303 -1);
304
305 link_uri = dh_link_get_uri (link);
306 if (g_str_has_prefix (data->uri, link_uri)) {
307 data->found = TRUE;
308 data->iter = *iter;
309 data->path = gtk_tree_path_copy (path);
310 }
311 g_free (link_uri);
312
313 return data->found;
314 }
315
316 void
dh_book_tree_select_uri(DhBookTree * tree,const gchar * uri)317 dh_book_tree_select_uri (DhBookTree *tree,
318 const gchar *uri)
319 {
320 DhBookTreePriv *priv = GET_PRIVATE (tree);
321 GtkTreeSelection *selection;
322 FindURIData data;
323
324 data.found = FALSE;
325 data.uri = uri;
326
327 gtk_tree_model_foreach (GTK_TREE_MODEL (priv->store),
328 (GtkTreeModelForeachFunc) book_tree_find_uri_foreach,
329 &data);
330
331 if (!data.found) {
332 return;
333 }
334
335 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree));
336
337 g_signal_handlers_block_by_func (selection,
338 book_tree_selection_changed_cb,
339 tree);
340
341 gtk_tree_view_expand_to_path (GTK_TREE_VIEW (tree), data.path);
342 gtk_tree_selection_select_iter (selection, &data.iter);
343 gtk_tree_view_set_cursor (GTK_TREE_VIEW (tree), data.path, NULL, 0);
344
345 g_signal_handlers_unblock_by_func (selection,
346 book_tree_selection_changed_cb,
347 tree);
348
349 gtk_tree_path_free (data.path);
350 }
351
352 const gchar *
dh_book_tree_get_selected_book_title(DhBookTree * tree)353 dh_book_tree_get_selected_book_title (DhBookTree *tree)
354 {
355 GtkTreeSelection *selection;
356 GtkTreeModel *model;
357 GtkTreeIter iter;
358 GtkTreePath *path;
359 DhLink *link;
360
361 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree));
362 if (!gtk_tree_selection_get_selected (selection, &model, &iter)) {
363 return NULL;
364 }
365
366 path = gtk_tree_model_get_path (model, &iter);
367
368 /* Get the book node for this link. */
369 while (1) {
370 if (gtk_tree_path_get_depth (path) <= 1) {
371 break;
372 }
373
374 gtk_tree_path_up (path);
375 }
376
377 gtk_tree_model_get_iter (model, &iter, path);
378 gtk_tree_path_free (path);
379
380 gtk_tree_model_get (model, &iter,
381 COL_LINK, &link,
382 -1);
383
384 return dh_link_get_name (link);
385 }
386