libempathy-gtk/empathy-contact-selector.c

   1 /*
   2 *  Copyright (C) 2007 Marco Barisione <marco@barisione.org>
   3 *  Copyright (C) 2008 Collabora Ltd.
   4 *
   5 *  This library is free software; you can redistribute it and/or
   6 *  modify it under the terms of the GNU Lesser General Public
   7 *  License as published by the Free Software Foundation; either
   8 *  version 2.1 of the License, or (at your option) any later version.
   9 *
  10 *  This library 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 GNU
  13 *  Lesser General Public License for more details.
  14 *
  15 *  You should have received a copy of the GNU Lesser General Public
  16 *  License along with this library; if not, write to the Free Software
  17 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  18 *
  19 *  Authors: Marco Barisione <marco@barisione.org>
  20 *           Elliot Fairweather <elliot.fairweather@collabora.co.uk>
  21 */
  22
  23 #include "config.h"
  24
  25 #include <glib/gi18n-lib.h>
  26 #include <gtk/gtk.h>
  27
  28 #include <libempathy/empathy-contact.h>
  29 #include <libempathy-gtk/empathy-contact-list-store.h>
  30 #include <libempathy/empathy-utils.h>
  31
  32 #include "empathy-contact-selector.h"
  33
  34 /**
  35  * SECTION:empathy-contact-selector
  36  * @title:EmpathyContactSelector
  37  * @short_description: A widget used to choose from a list of contacts.
  38  * @include: libempathy-gtk/empathy-contact-selector.h
  39  *
  40  * #EmpathyContactSelector is a widget which extends #GtkComboBox to provide
  41  * a chooser of available contacts.
  42  */
  43
  44 /**
  45  * EmpathyContactSelector:
  46  * @parent: parent object
  47  *
  48  * Widget which extends #GtkComboBox to provide a chooser of available contacts.
  49  */
  50
  51 G_DEFINE_TYPE (EmpathyContactSelector, empathy_contact_selector,
  52     GTK_TYPE_COMBO_BOX)
  53
  54 enum
  55 {
  56   PROP_0,
  57   PROP_CONTACT_LIST
  58 };
  59
  60 #define GET_PRIV(obj) EMPATHY_GET_PRIV (obj, EmpathyContactSelector)
  61 typedef struct
  62 {
  63   EmpathyContactList *contact_list;
  64   EmpathyContactListStore *store;
  65   GtkTreeModel *model;
  66   gboolean dispose_run;
  67 } EmpathyContactSelectorPriv;
  68
  69 static void contact_selector_manage_blank_contact (
  70     EmpathyContactSelector *selector);
  71
  72 static guint
  73 contact_selector_get_number_online_contacts (GtkTreeModel *model)
  74 {
  75   GtkTreeIter tmp_iter;
  76   gboolean is_online;
  77   guint number_online_contacts = 0;
  78   gboolean ok;
  79
  80   for (ok = gtk_tree_model_get_iter_first (model, &tmp_iter);
  81       ok; ok = gtk_tree_model_iter_next (model, &tmp_iter))
  82     {
  83       gtk_tree_model_get (model,
  84           &tmp_iter, EMPATHY_CONTACT_LIST_STORE_COL_IS_ONLINE,
  85           &is_online, -1);
  86       if (is_online)
  87         number_online_contacts++;
  88     }
  89
  90   return number_online_contacts;
  91 }
  92
  93 static gboolean
  94 contact_selector_get_iter_for_blank_contact (GtkTreeStore *model,
  95                                              GtkTreeIter *blank_iter)
  96 {
  97   GtkTreeIter tmp_iter;
  98   EmpathyContact *tmp_contact;
  99   gboolean is_present = FALSE;
 100   gboolean ok;
 101
 102   for (ok = gtk_tree_model_get_iter_first (GTK_TREE_MODEL (model), &tmp_iter);
 103       ok; ok = gtk_tree_model_iter_next (GTK_TREE_MODEL (model), &tmp_iter))
 104     {
 105       gtk_tree_model_get (GTK_TREE_MODEL (model),
 106           &tmp_iter, EMPATHY_CONTACT_LIST_STORE_COL_CONTACT,
 107           &tmp_contact, -1);
 108       if (tmp_contact == NULL)
 109         {
 110           *blank_iter = tmp_iter;
 111           is_present = TRUE;
 112           break;
 113         }
 114       g_object_unref (tmp_contact);
 115     }
 116
 117   return is_present;
 118 }
 119
 120 static void
 121 contact_selector_add_blank_contact (EmpathyContactSelector *selector)
 122 {
 123   EmpathyContactSelectorPriv *priv = GET_PRIV (selector);
 124   GtkTreeIter blank_iter, iter;
 125
 126   gtk_tree_store_insert_with_values (
 127       GTK_TREE_STORE (priv->store), &blank_iter, NULL, 0,
 128       EMPATHY_CONTACT_LIST_STORE_COL_CONTACT, NULL,
 129       EMPATHY_CONTACT_LIST_STORE_COL_NAME, (_("Select a contact")),
 130       EMPATHY_CONTACT_LIST_STORE_COL_IS_ONLINE, FALSE, -1);
 131
 132   /* look up blank_iter in the filter model */
 133   g_return_if_fail (gtk_tree_model_filter_convert_child_iter_to_iter (
 134       GTK_TREE_MODEL_FILTER (priv->model), &iter, &blank_iter));
 135
 136   g_signal_handlers_block_by_func (selector,
 137       contact_selector_manage_blank_contact, selector);
 138   gtk_combo_box_set_active_iter (GTK_COMBO_BOX (selector), &iter);
 139   g_signal_handlers_unblock_by_func (selector,
 140       contact_selector_manage_blank_contact, selector);
 141 }
 142
 143 static void
 144 contact_selector_remove_blank_contact (EmpathyContactSelector *selector)
 145 {
 146   EmpathyContactSelectorPriv *priv = GET_PRIV (selector);
 147   GtkTreeIter blank_iter;
 148
 149   if (contact_selector_get_iter_for_blank_contact
 150       (GTK_TREE_STORE (priv->store), &blank_iter))
 151     gtk_tree_store_remove (GTK_TREE_STORE (priv->store), &blank_iter);
 152 }
 153
 154 static void
 155 contact_selector_manage_sensitivity (EmpathyContactSelector *selector)
 156 {
 157   EmpathyContactSelectorPriv *priv = GET_PRIV (selector);
 158   guint number_online_contacts;
 159
 160   number_online_contacts = contact_selector_get_number_online_contacts (priv->model);
 161
 162   if (number_online_contacts != 0)
 163     gtk_widget_set_sensitive (GTK_WIDGET (selector), TRUE);
 164   else
 165     gtk_widget_set_sensitive (GTK_WIDGET (selector), FALSE);
 166 }
 167
 168 static void
 169 contact_selector_manage_blank_contact (EmpathyContactSelector *selector)
 170 {
 171   gboolean is_popup_shown;
 172
 173   g_object_get (selector, "popup-shown", &is_popup_shown, NULL);
 174
 175   if (is_popup_shown)
 176     {
 177       contact_selector_remove_blank_contact (selector);
 178     }
 179   else
 180     {
 181       if (gtk_combo_box_get_active (GTK_COMBO_BOX (selector)) == -1)
 182         {
 183           contact_selector_add_blank_contact (selector);
 184         }
 185       else
 186         {
 187           contact_selector_remove_blank_contact (selector);
 188         }
 189     }
 190
 191   contact_selector_manage_sensitivity (selector);
 192 }
 193
 194 static GObject *
 195 contact_selector_constructor (GType type,
 196                               guint n_construct_params,
 197                               GObjectConstructParam *construct_params)
 198 {
 199   GObject *object;
 200   EmpathyContactSelector *contact_selector;
 201   EmpathyContactSelectorPriv *priv;
 202   GtkCellLayout *cell_layout;
 203   GtkCellRenderer *renderer;
 204
 205   object = G_OBJECT_CLASS (empathy_contact_selector_parent_class)->constructor
 206     (type, n_construct_params, construct_params);
 207   priv = GET_PRIV (object);
 208   contact_selector = EMPATHY_CONTACT_SELECTOR (object);
 209   cell_layout = GTK_CELL_LAYOUT (object);
 210
 211   priv->store = empathy_contact_list_store_new (priv->contact_list);
 212
 213   g_object_set (priv->store, "is-compact", TRUE, "show-avatars", FALSE,
 214       "show-offline", FALSE, "show-groups", FALSE, "show-protocols", FALSE,
 215       "sort-criterium", EMPATHY_CONTACT_LIST_STORE_SORT_NAME, NULL);
 216
 217   g_signal_connect_swapped (priv->store, "row-changed",
 218       G_CALLBACK (contact_selector_manage_sensitivity),
 219       contact_selector);
 220   g_signal_connect_swapped (contact_selector, "changed",
 221       G_CALLBACK (contact_selector_manage_blank_contact),
 222       contact_selector);
 223   g_signal_connect_swapped (contact_selector, "notify::popup-shown",
 224       G_CALLBACK (contact_selector_manage_blank_contact),
 225       contact_selector);
 226
 227   priv->model = gtk_tree_model_filter_new (GTK_TREE_MODEL (priv->store), NULL);
 228
 229   gtk_combo_box_set_model (GTK_COMBO_BOX (contact_selector), priv->model);
 230   gtk_widget_set_sensitive (GTK_WIDGET (contact_selector), FALSE);
 231
 232   renderer = gtk_cell_renderer_pixbuf_new ();
 233   gtk_cell_layout_pack_start (cell_layout, renderer, FALSE);
 234   gtk_cell_layout_set_attributes (cell_layout, renderer,
 235       "pixbuf", EMPATHY_CONTACT_LIST_STORE_COL_ICON_STATUS, NULL);
 236
 237   renderer = gtk_cell_renderer_text_new ();
 238   gtk_cell_layout_pack_start (cell_layout, renderer, TRUE);
 239   gtk_cell_layout_set_attributes (cell_layout, renderer,
 240       "text", EMPATHY_CONTACT_LIST_STORE_COL_NAME, NULL);
 241
 242   contact_selector_manage_blank_contact (contact_selector);
 243   contact_selector_manage_sensitivity (contact_selector);
 244
 245   return object;
 246 }
 247
 248 static void
 249 empathy_contact_selector_init (EmpathyContactSelector *empathy_contact_selector)
 250 {
 251   EmpathyContactSelectorPriv *priv =
 252       G_TYPE_INSTANCE_GET_PRIVATE (empathy_contact_selector,
 253       EMPATHY_TYPE_CONTACT_SELECTOR, EmpathyContactSelectorPriv);
 254
 255   empathy_contact_selector->priv = priv;
 256
 257   priv->dispose_run = FALSE;
 258 }
 259
 260 static void
 261 contact_selector_set_property (GObject *object,
 262                                guint prop_id,
 263                                const GValue *value,
 264                                GParamSpec *pspec)
 265 {
 266   EmpathyContactSelectorPriv *priv = GET_PRIV (object);
 267
 268   switch (prop_id)
 269     {
 270       case PROP_CONTACT_LIST:
 271         priv->contact_list = g_value_dup_object (value);
 272         break;
 273       default:
 274         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 275         break;
 276     }
 277 }
 278
 279 static void
 280 contact_selector_get_property (GObject *object,
 281                                guint prop_id,
 282                                GValue *value,
 283                                GParamSpec *pspec)
 284 {
 285   EmpathyContactSelectorPriv *priv = GET_PRIV (object);
 286
 287   switch (prop_id)
 288     {
 289       case PROP_CONTACT_LIST:
 290         g_value_set_object (value, priv->contact_list);
 291         break;
 292       default:
 293         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 294         break;
 295     }
 296 }
 297
 298 static void
 299 contact_selector_dispose (GObject *object)
 300 {
 301   EmpathyContactSelector *selector = EMPATHY_CONTACT_SELECTOR (object);
 302   EmpathyContactSelectorPriv *priv = GET_PRIV (selector);
 303
 304   if (priv->dispose_run)
 305     return;
 306
 307   priv->dispose_run = TRUE;
 308
 309   if (priv->contact_list)
 310     {
 311       g_object_unref (priv->contact_list);
 312       priv->contact_list = NULL;
 313     }
 314
 315   if (priv->model)
 316     {
 317       g_object_unref (priv->model);
 318       priv->model = NULL;
 319     }
 320
 321   if (priv->store)
 322     {
 323       g_object_unref (priv->store);
 324       priv->store = NULL;
 325     }
 326
 327   (G_OBJECT_CLASS (empathy_contact_selector_parent_class)->dispose) (object);
 328 }
 329
 330 static void
 331 empathy_contact_selector_class_init (EmpathyContactSelectorClass *klass)
 332 {
 333   GObjectClass *object_class = G_OBJECT_CLASS (klass);
 334   object_class->constructor = contact_selector_constructor;
 335   object_class->dispose = contact_selector_dispose;
 336   object_class->set_property = contact_selector_set_property;
 337   object_class->get_property = contact_selector_get_property;
 338   g_type_class_add_private (klass, sizeof (EmpathyContactSelectorPriv));
 339
 340   /**
 341    * EmpathyContactSelector:contact-list:
 342    *
 343    * An #EmpathyContactList containing the contacts for the
 344    * #EmpathyContactSelector.
 345    */
 346   g_object_class_install_property (object_class, PROP_CONTACT_LIST,
 347       g_param_spec_object ("contact-list", "contact list", "contact list",
 348       EMPATHY_TYPE_CONTACT_LIST, G_PARAM_CONSTRUCT_ONLY |
 349       G_PARAM_READWRITE | G_PARAM_STATIC_NICK | G_PARAM_STATIC_BLURB));
 350 }
 351
 352 /**
 353  * empathy_contact_selector_new:
 354  * @contact_list: an #EmpathyContactList containing the contacts to list in
 355  * the contact selector
 356  *
 357  * Creates a new #EmpathyContactSelector.
 358  *
 359  * Return value: A new #EmpathyContactSelector
 360  */
 361 GtkWidget *
 362 empathy_contact_selector_new (EmpathyContactList *contact_list)
 363 {
 364   g_return_val_if_fail (EMPATHY_IS_CONTACT_LIST (contact_list), NULL);
 365
 366   return GTK_WIDGET (g_object_new (EMPATHY_TYPE_CONTACT_SELECTOR,
 367       "contact-list", contact_list, NULL));
 368 }
 369
 370 /**
 371  * empathy_contact_selector_dup_selected:
 372  * @selector: An #EmpathyContactSelector
 373  *
 374  * Returns a new reference to the contact which is currently selected in
 375  * @selector, or %NULL if there is no contact selected. The returned contact
 376  * should be unrefed with g_object_unref() when finished with.
 377  *
 378  * Return value: A new reference to the contact currently selected, or %NULL
 379  */
 380 EmpathyContact *
 381 empathy_contact_selector_dup_selected (EmpathyContactSelector *selector)
 382 {
 383   EmpathyContactSelectorPriv *priv = GET_PRIV (selector);
 384   EmpathyContact *contact = NULL;
 385   GtkTreeIter iter;
 386
 387   g_return_val_if_fail (EMPATHY_IS_CONTACT_SELECTOR (selector), NULL);
 388
 389   if (!gtk_combo_box_get_active_iter (GTK_COMBO_BOX (selector), &iter))
 390     return NULL;
 391
 392   gtk_tree_model_get (priv->model, &iter,
 393       EMPATHY_CONTACT_LIST_STORE_COL_CONTACT, &contact, -1);
 394
 395   return contact;
 396 }
 397
 398 typedef struct
 399 {
 400   EmpathyContactSelectorFilterFunc func;
 401   gpointer user_data;
 402 } FilterData;
 403
 404 static void
 405 filter_data_free (gpointer data)
 406 {
 407   g_slice_free (FilterData, data);
 408 }
 409
 410 static gboolean
 411 contact_selector_filter_visible_func (GtkTreeModel *model,
 412                                       GtkTreeIter *iter,
 413                                       gpointer user_data)
 414 {
 415   EmpathyContact *contact;
 416   gboolean visible = TRUE;
 417   FilterData *data = (FilterData *) user_data;
 418
 419   gtk_tree_model_get (model, iter,
 420       EMPATHY_CONTACT_LIST_STORE_COL_CONTACT, &contact,
 421       -1);
 422
 423   if (contact != NULL)
 424     {
 425       visible = data->func (contact, data->user_data);
 426
 427       g_object_unref (contact);
 428     }
 429
 430   return visible;
 431 }
 432
 433 /**
 434  * empathy_contact_selector_set_visible:
 435  * @selector: an #EmpathyContactSelector
 436  * @func: an #EmpathyContactSelectorFilterFunc to filter the contacts
 437  * @user_data: data to pass to @func or %NULL
 438  *
 439  * Sets a filter on the @selector so only contacts that return %TRUE
 440  * when passed into @func are visible.
 441  *
 442  * A typical usage for this function would be to only show contacts that
 443  * can send or receive files. In this case, one could use the
 444  * empathy_contact_can_send_files() function
 445  */
 446 void
 447 empathy_contact_selector_set_visible (EmpathyContactSelector *selector,
 448                                       EmpathyContactSelectorFilterFunc func,
 449                                       gpointer user_data)
 450 {
 451   EmpathyContactSelectorPriv *priv = GET_PRIV (selector);
 452   FilterData *data;
 453
 454   data = g_slice_new0 (FilterData);
 455   data->func = func;
 456   data->user_data = user_data;
 457
 458   gtk_tree_model_filter_set_visible_func (GTK_TREE_MODEL_FILTER (priv->model),
 459       contact_selector_filter_visible_func, data, filter_data_free);
 460
 461   gtk_tree_model_filter_refilter (GTK_TREE_MODEL_FILTER (priv->model));
 462 }
 463
 464 /**
 465  * EmpathyContactSelectorFilterFunc:
 466  * @contact: an #EmpathyContact
 467  * @user_data: user data or %NULL
 468  *
 469  * A function which decides whether the contact indicated by @contact
 470  * is visible.
 471  *
 472  * Return value: whether @contact is visible
 473  */