shell/ev-page-action.c

   1 /*
   2  *  Copyright (C) 2003, 2004 Marco Pesenti Gritti
   3  *  Copyright (C) 2003, 2004 Christian Persch
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2, or (at your option)
   8  *  any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  *
  19  *  $Id$
  20  */
  21
  22 #include "config.h"
  23
  24 #include "ev-page-action.h"
  25 #include "ev-window.h"
  26 #include "ev-document-links.h"
  27
  28 #include <glib/gi18n.h>
  29 #include <gtk/gtkentry.h>
  30 #include <gtk/gtktoolitem.h>
  31 #include <gtk/gtklabel.h>
  32 #include <gtk/gtkhbox.h>
  33 #include <string.h>
  34
  35 typedef struct _EvPageActionWidget EvPageActionWidget;
  36 typedef struct _EvPageActionWidgetClass EvPageActionWidgetClass;
  37 struct _EvPageActionWidget
  38 {
  39         GtkToolItem parent;
  40
  41         GtkWidget *entry;
  42         EvPageCache *page_cache;
  43         guint signal_id;
  44         GtkTreeModel *filter_model;
  45         GtkTreeModel *model;
  46 };
  47
  48 struct _EvPageActionWidgetClass
  49 {
  50         GtkToolItemClass parent_class;
  51 };
  52
  53 struct _EvPageActionPrivate
  54 {
  55         EvPageCache *page_cache;
  56         GtkTreeModel *model;
  57 };
  58
  59
  60 /* Widget we pass back */
  61 static GType ev_page_action_widget_get_type   (void);
  62 static void  ev_page_action_widget_init       (EvPageActionWidget      *action_widget);
  63 static void  ev_page_action_widget_class_init (EvPageActionWidgetClass *action_widget);
  64
  65 G_DEFINE_TYPE (EvPageActionWidget, ev_page_action_widget, GTK_TYPE_TOOL_ITEM)
  66
  67 static void
  68 ev_page_action_widget_init (EvPageActionWidget *action_widget)
  69 {
  70
  71 }
  72
  73 static void
  74 ev_page_action_widget_class_init (EvPageActionWidgetClass *action_widget)
  75 {
  76 }
  77
  78
  79
  80 static void ev_page_action_init       (EvPageAction *action);
  81 static void ev_page_action_class_init (EvPageActionClass *class);
  82
  83 G_DEFINE_TYPE (EvPageAction, ev_page_action, GTK_TYPE_ACTION)
  84
  85 #define EV_PAGE_ACTION_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), EV_TYPE_PAGE_ACTION, EvPageActionPrivate))
  86
  87 enum {
  88         PROP_0,
  89         PROP_PAGE_CACHE,
  90         PROP_MODEL,
  91 };
  92
  93 /* user data to set on the widget. */
  94 #define EPA_FILTER_MODEL_DATA "epa-filter-model"
  95
  96 static void
  97 page_changed_cb (EvPageCache        *page_cache,
  98                  gint                page,
  99                  EvPageActionWidget *proxy)
 100 {
 101         g_assert (proxy);
 102
 103         if (page_cache != NULL && page >= 0) {
 104                 gchar *page_label = ev_page_cache_get_page_label (page_cache, page);
 105                 gtk_entry_set_text (GTK_ENTRY (proxy->entry), page_label);
 106                 gtk_editable_set_position (GTK_EDITABLE (proxy->entry), -1);
 107                 g_free (page_label);
 108         } else {
 109                 gtk_entry_set_text (GTK_ENTRY (proxy->entry), "");
 110         }
 111 }
 112
 113 static void
 114 activate_cb (GtkWidget *entry, GtkAction *action)
 115 {
 116         EvPageAction *page = EV_PAGE_ACTION (action);
 117         EvPageCache *page_cache;
 118         const char *text;
 119
 120         text = gtk_entry_get_text (GTK_ENTRY (entry));
 121         page_cache = page->priv->page_cache;
 122
 123         if (! ev_page_cache_set_page_label (page_cache, text)) {
 124                 /* rest the entry to the current page if we were unable to
 125                  * change it */
 126                 gchar *page_label =
 127                         ev_page_cache_get_page_label (page_cache,
 128                                                       ev_page_cache_get_current_page (page_cache));
 129                 gtk_entry_set_text (GTK_ENTRY (entry), page_label);
 130                 gtk_editable_set_position (GTK_EDITABLE (entry), -1);
 131                 g_free (page_label);
 132         }
 133 }
 134
 135 static GtkWidget *
 136 create_tool_item (GtkAction *action)
 137 {
 138         EvPageActionWidget *proxy;
 139
 140         proxy = g_object_new (ev_page_action_widget_get_type (), NULL);
 141         gtk_container_set_border_width (GTK_CONTAINER (proxy), 6);
 142         gtk_widget_show (GTK_WIDGET (proxy));
 143
 144         proxy->entry = gtk_entry_new ();
 145         gtk_entry_set_width_chars (GTK_ENTRY (proxy->entry), 5);
 146         gtk_widget_show (proxy->entry);
 147
 148         g_signal_connect (proxy->entry, "activate",
 149                           G_CALLBACK (activate_cb),
 150                           action);
 151
 152         gtk_container_add (GTK_CONTAINER (proxy), proxy->entry);
 153
 154         return GTK_WIDGET (proxy);
 155 }
 156
 157 static void
 158 update_page_cache (EvPageAction *page, GParamSpec *pspec, EvPageActionWidget *proxy)
 159 {
 160         EvPageCache *page_cache;
 161         guint signal_id;
 162
 163         page_cache = page->priv->page_cache;
 164
 165         /* clear the old signal */
 166         if (proxy->signal_id > 0 && proxy->page_cache)
 167                 g_signal_handler_disconnect (proxy->page_cache, proxy->signal_id);
 168
 169         if (page_cache != NULL) {
 170                 signal_id = g_signal_connect (page_cache,
 171                                               "page-changed",
 172                                               G_CALLBACK (page_changed_cb),
 173                                               proxy);
 174                 /* Set the initial value */
 175                 page_changed_cb (page_cache,
 176                                  ev_page_cache_get_current_page (page_cache),
 177                                  proxy);
 178         } else {
 179                 /* Or clear the entry */
 180                 signal_id = 0;
 181                 page_changed_cb (NULL, 0, proxy);
 182         }
 183         proxy->page_cache = page_cache;
 184         proxy->signal_id = signal_id;
 185 }
 186
 187 static gboolean
 188 build_new_tree_cb (GtkTreeModel *model,
 189                    GtkTreePath  *path,
 190                    GtkTreeIter  *iter,
 191                    gpointer      data)
 192 {
 193         GtkTreeModel *filter_model = GTK_TREE_MODEL (data);
 194         EvLink *link;
 195
 196         gtk_tree_model_get (model, iter,
 197                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 198                             -1);
 199
 200         if (link && ev_link_get_link_type (link) == EV_LINK_TYPE_PAGE) {
 201                 GtkTreeIter filter_iter;
 202
 203                 gtk_list_store_append (GTK_LIST_STORE (filter_model), &filter_iter);
 204                 gtk_list_store_set (GTK_LIST_STORE (filter_model), &filter_iter,
 205                                     0, iter,
 206                                     -1);
 207         }
 208
 209         return FALSE;
 210 }
 211
 212 static GtkTreeModel *
 213 get_filter_model_from_model (GtkTreeModel *model)
 214 {
 215         GtkTreeModel *filter_model;
 216
 217         filter_model =
 218                 (GtkTreeModel *) g_object_get_data (G_OBJECT (model), EPA_FILTER_MODEL_DATA);
 219         if (filter_model == NULL) {
 220                 filter_model = (GtkTreeModel *) gtk_list_store_new (1, GTK_TYPE_TREE_ITER);
 221
 222                 gtk_tree_model_foreach (model,
 223                                         build_new_tree_cb,
 224                                         filter_model);
 225                 g_object_set_data_full (G_OBJECT (model), EPA_FILTER_MODEL_DATA, filter_model, g_object_unref);
 226         }
 227
 228         return filter_model;
 229 }
 230
 231 static gboolean
 232 match_selected_cb (GtkEntryCompletion *completion,
 233                    GtkTreeModel       *filter_model,
 234                    GtkTreeIter        *filter_iter,
 235                    EvPageActionWidget *proxy)
 236 {
 237         EvLink *link;
 238         GtkTreeIter *iter;
 239
 240         gtk_tree_model_get (filter_model, filter_iter,
 241                             0, &iter,
 242                             -1);
 243         gtk_tree_model_get (proxy->model, iter,
 244                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 245                             -1);
 246         ev_page_cache_set_link (proxy->page_cache, link);
 247
 248         return TRUE;
 249 }
 250
 251
 252 static void
 253 display_completion_text (GtkCellLayout      *cell_layout,
 254                          GtkCellRenderer    *renderer,
 255                          GtkTreeModel       *filter_model,
 256                          GtkTreeIter        *filter_iter,
 257                          EvPageActionWidget *proxy)
 258 {
 259         EvLink *link;
 260         GtkTreeIter *iter;
 261
 262         gtk_tree_model_get (filter_model, filter_iter,
 263                             0, &iter,
 264                             -1);
 265         gtk_tree_model_get (proxy->model, iter,
 266                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 267                             -1);
 268
 269         g_object_set (renderer, "text", ev_link_get_title (link), NULL);
 270 }
 271
 272 static gboolean
 273 match_completion (GtkEntryCompletion *completion,
 274                   const gchar        *key,
 275                   GtkTreeIter        *filter_iter,
 276                   EvPageActionWidget *proxy)
 277 {
 278         EvLink *link;
 279         GtkTreeIter *iter;
 280         const gchar *text = NULL;
 281
 282         gtk_tree_model_get (gtk_entry_completion_get_model (completion),
 283                             filter_iter,
 284                             0, &iter,
 285                             -1);
 286         gtk_tree_model_get (proxy->model, iter,
 287                             EV_DOCUMENT_LINKS_COLUMN_LINK, &link,
 288                             -1);
 289
 290
 291         if (link)
 292                 text = ev_link_get_title (link);
 293
 294         if (text && key ) {
 295                 gchar *normalized_text;
 296                 gchar *normalized_key;
 297                 gchar *case_normalized_text;
 298                 gchar *case_normalized_key;
 299                 gboolean retval = FALSE;
 300
 301                 normalized_text = g_utf8_normalize (text, -1, G_NORMALIZE_ALL);
 302                 normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
 303                 case_normalized_text = g_utf8_casefold (normalized_text, -1);
 304                 case_normalized_key = g_utf8_casefold (normalized_key, -1);
 305
 306                 if (strstr (case_normalized_text, case_normalized_key))
 307                         retval = TRUE;
 308
 309                 g_free (normalized_text);
 310                 g_free (normalized_key);
 311                 g_free (case_normalized_text);
 312                 g_free (case_normalized_key);
 313
 314                 return retval;
 315         }
 316
 317         return FALSE;
 318 }
 319
 320
 321 static void
 322 update_model (EvPageAction *page, GParamSpec *pspec, EvPageActionWidget *proxy)
 323 {
 324         GtkTreeModel *model;
 325         GtkTreeModel *filter_model;
 326
 327         g_object_get (G_OBJECT (page),
 328                       "model", &model,
 329                       NULL);
 330         if (model != NULL) {
 331                 /* Magik */
 332                 GtkEntryCompletion *completion;
 333                 GtkCellRenderer *renderer;
 334
 335                 proxy->model = model;
 336                 filter_model = get_filter_model_from_model (model);
 337
 338                 completion = gtk_entry_completion_new ();
 339
 340                 /* popup-set-width is 2.7.0 only */
 341                 g_object_set (G_OBJECT (completion),
 342                               "popup-set-width", FALSE,
 343                               "model", filter_model,
 344                               NULL);
 345
 346                 g_signal_connect (completion, "match-selected", G_CALLBACK (match_selected_cb), proxy);
 347                 gtk_entry_completion_set_match_func (completion,
 348                                                      (GtkEntryCompletionMatchFunc) match_completion,
 349                                                      proxy, NULL);
 350
 351                 /* Set up the layout */
 352                 renderer = (GtkCellRenderer *)
 353                         g_object_new (GTK_TYPE_CELL_RENDERER_TEXT,
 354                                       "ellipsize", PANGO_ELLIPSIZE_END,
 355                                       "width_chars", 30,
 356                                       NULL);
 357                 gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (completion), renderer, TRUE);
 358                 gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (completion),
 359                                                     renderer,
 360                                                     (GtkCellLayoutDataFunc) display_completion_text,
 361                                                     proxy, NULL);
 362                 gtk_entry_set_completion (GTK_ENTRY (proxy->entry), completion);
 363         }
 364 }
 365
 366 static void
 367 connect_proxy (GtkAction *action, GtkWidget *proxy)
 368 {
 369         if (GTK_IS_TOOL_ITEM (proxy)) {
 370                 g_signal_connect_object (action, "notify::page-cache",
 371                                          G_CALLBACK (update_page_cache),
 372                                          proxy, 0);
 373                 /* We only go through this whole rigmarole if we can set
 374                  * GtkEntryCompletion::popup-set-width, which appeared in
 375                  * GTK+-2.7.0 */
 376                 if (gtk_check_version (2, 7, 0) == NULL) {
 377                         g_signal_connect_object (action, "notify::model",
 378                                                  G_CALLBACK (update_model),
 379                                                  proxy, 0);
 380                 }
 381         }
 382
 383         GTK_ACTION_CLASS (ev_page_action_parent_class)->connect_proxy (action, proxy);
 384 }
 385
 386 static void
 387 ev_page_action_dispose (GObject *object)
 388 {
 389         EvPageAction *page = EV_PAGE_ACTION (object);
 390
 391         if (page->priv->page_cache) {
 392                 g_object_unref (page->priv->page_cache);
 393                 page->priv->page_cache = NULL;
 394         }
 395
 396         G_OBJECT_CLASS (ev_page_action_parent_class)->dispose (object);
 397 }
 398
 399 static void
 400 ev_page_action_set_property (GObject      *object,
 401                              guint         prop_id,
 402                              const GValue *value,
 403                              GParamSpec   *pspec)
 404 {
 405         EvPageAction *page;
 406         EvPageCache *page_cache;
 407         GtkTreeModel *model;
 408
 409         page = EV_PAGE_ACTION (object);
 410
 411         switch (prop_id)
 412         {
 413         case PROP_PAGE_CACHE:
 414                 page_cache = page->priv->page_cache;
 415                 page->priv->page_cache = EV_PAGE_CACHE (g_value_dup_object (value));
 416                 if (page_cache)
 417                         g_object_unref (page_cache);
 418                 break;
 419         case PROP_MODEL:
 420                 model = page->priv->model;
 421                 page->priv->model = GTK_TREE_MODEL (g_value_dup_object (value));
 422                 if (model)
 423                         g_object_unref (model);
 424                 break;
 425         default:
 426                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 427                 break;
 428         }
 429 }
 430
 431 static void
 432 ev_page_action_get_property (GObject    *object,
 433                              guint       prop_id,
 434                              GValue     *value,
 435                              GParamSpec *pspec)
 436 {
 437         EvPageAction *page;
 438
 439         page = EV_PAGE_ACTION (object);
 440
 441         switch (prop_id)
 442         {
 443         case PROP_PAGE_CACHE:
 444                 g_value_set_object (value, page->priv->page_cache);
 445                 break;
 446         case PROP_MODEL:
 447                 g_value_set_object (value, page->priv->model);
 448                 break;
 449         default:
 450                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 451                 break;
 452         }
 453 }
 454
 455 void
 456 ev_page_action_set_document (EvPageAction *page, EvDocument *document)
 457 {
 458         EvPageCache *page_cache = NULL;
 459
 460         if (document)
 461                 page_cache = ev_document_get_page_cache (document);
 462
 463         g_object_set (page,
 464                       "page-cache", page_cache,
 465                       "model", NULL,
 466                       NULL);
 467 }
 468
 469 void
 470 ev_page_action_set_model (EvPageAction *page_action,
 471                           GtkTreeModel *model)
 472 {
 473         g_object_set (page_action,
 474                       "model", model,
 475                       NULL);
 476 }
 477
 478 static void
 479 ev_page_action_init (EvPageAction *page)
 480 {
 481         page->priv = EV_PAGE_ACTION_GET_PRIVATE (page);
 482 }
 483
 484 static void
 485 ev_page_action_class_init (EvPageActionClass *class)
 486 {
 487         GObjectClass *object_class = G_OBJECT_CLASS (class);
 488         GtkActionClass *action_class = GTK_ACTION_CLASS (class);
 489
 490         object_class->dispose = ev_page_action_dispose;
 491         object_class->set_property = ev_page_action_set_property;
 492         object_class->get_property = ev_page_action_get_property;
 493
 494         action_class->toolbar_item_type = GTK_TYPE_TOOL_ITEM;
 495         action_class->create_tool_item = create_tool_item;
 496         action_class->connect_proxy = connect_proxy;
 497
 498         g_object_class_install_property (object_class,
 499                                          PROP_PAGE_CACHE,
 500                                          g_param_spec_object ("page-cache",
 501                                                               "Page Cache",
 502                                                               "Current page cache",
 503                                                               EV_TYPE_PAGE_CACHE,
 504                                                               G_PARAM_READWRITE));
 505
 506         g_object_class_install_property (object_class,
 507                                          PROP_MODEL,
 508                                          g_param_spec_object ("model",
 509                                                               "Model",
 510                                                               "Current Model",
 511                                                               GTK_TYPE_TREE_MODEL,
 512                                                               G_PARAM_READWRITE));
 513
 514         g_type_class_add_private (object_class, sizeof (EvPageActionPrivate));
 515 }