Moved from Mate-Extra repository

1 files changed, 917 insertions, 0 deletions

diff --git a/mate-dictionary/libgdict/gdict-source-chooser.c b/mate-dictionary/libgdict/gdict-source-chooser.c
new file mode 100644
index 00000000..ab640f85
--- /dev/null
+++ b/mate-dictionary/libgdict/gdict-source-chooser.c
@@ -0,0 +1,917 @@
+/* gdict-source-chooser.h - display widget for dictionary sources
+ *
+ * Copyright (C) 2007  Emmanuele Bassi <[email protected]>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ */
+
+/**
+ * SECTION:gdict-source-chooser
+ * @short_description: Display the list of available sources
+ *
+ * #GdictSourceChooser is a widget that shows the list of available
+ * dictionary sources using a #GdictSourceLoader instance as a model.
+ * It can be used to allow choosing the current dictionary source.
+ *
+ * #GdictSourceChooser is available since Gdict 0.12.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <glib/gi18n-lib.h>
+
+#include <gdk/gdk.h>
+
+#include <gtk/gtk.h>
+
+#include "gdict-source-chooser.h"
+#include "gdict-utils.h"
+#include "gdict-private.h"
+#include "gdict-enum-types.h"
+#include "gdict-marshal.h"
+
+#define GDICT_SOURCE_CHOOSER_GET_PRIVATE(obj)   \
+        (G_TYPE_INSTANCE_GET_PRIVATE ((obj),    \
+         GDICT_TYPE_SOURCE_CHOOSER,             \
+         GdictSourceChooserPrivate))
+
+struct _GdictSourceChooserPrivate
+{
+  GtkListStore *store;
+
+  GtkWidget *treeview;
+  GtkWidget *refresh_button;
+  GtkWidget *buttons_box;
+
+  GdictSourceLoader *loader;
+  gint n_sources;
+
+  GdkCursor *busy_cursor;
+  
+  gchar *current_source;
+};
+
+enum
+{
+  SOURCE_TRANSPORT,
+  SOURCE_NAME,
+  SOURCE_DESCRIPTION,
+  SOURCE_CURRENT,
+
+  SOURCE_N_COLUMNS
+};
+
+enum
+{
+  PROP_0,
+
+  PROP_LOADER,
+  PROP_COUNT
+};
+
+enum
+{
+  SOURCE_ACTIVATED,
+  SELECTION_CHANGED,
+
+  LAST_SIGNAL
+};
+
+static guint source_chooser_signals[LAST_SIGNAL] = { 0, };
+
+G_DEFINE_TYPE (GdictSourceChooser, gdict_source_chooser, GTK_TYPE_VBOX);
+
+static void
+gdict_source_chooser_finalize (GObject *gobject)
+{
+  GdictSourceChooser *chooser = GDICT_SOURCE_CHOOSER (gobject);
+  GdictSourceChooserPrivate *priv = chooser->priv;
+
+  g_free (priv->current_source);
+
+  G_OBJECT_CLASS (gdict_source_chooser_parent_class)->finalize (gobject);
+}
+
+static void
+gdict_source_chooser_dispose (GObject *gobject)
+{
+  GdictSourceChooser *chooser = GDICT_SOURCE_CHOOSER (gobject);
+  GdictSourceChooserPrivate *priv = chooser->priv;
+
+  if (priv->store)
+    {
+      g_object_unref (priv->store);
+      priv->store = NULL;
+    }
+
+  if (priv->loader)
+    {
+      g_object_unref (priv->loader);
+      priv->loader = NULL;
+    }
+
+  if (priv->busy_cursor)
+    {
+      gdk_cursor_unref (priv->busy_cursor);
+      priv->busy_cursor = NULL;
+    }
+
+  G_OBJECT_CLASS (gdict_source_chooser_parent_class)->dispose (gobject);
+}
+
+static void
+gdict_source_chooser_set_property (GObject      *gobject,
+                                   guint         prop_id,
+                                   const GValue *value,
+                                   GParamSpec   *pspec)
+{
+  switch (prop_id)
+    {
+    case PROP_LOADER:
+      gdict_source_chooser_set_loader (GDICT_SOURCE_CHOOSER (gobject),
+                                       g_value_get_object (value));
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+gdict_source_chooser_get_property (GObject    *gobject,
+                                   guint       prop_id,
+                                   GValue     *value,
+                                   GParamSpec *pspec)
+{
+  GdictSourceChooserPrivate *priv;
+
+  priv = GDICT_SOURCE_CHOOSER (gobject)->priv;
+
+  switch (prop_id)
+    {
+    case PROP_LOADER:
+      g_value_set_object (value, priv->loader);
+      break;
+    case PROP_COUNT:
+      g_value_set_int (value, priv->n_sources);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+row_activated_cb (GtkTreeView       *treeview,
+                  GtkTreePath       *path,
+                  GtkTreeViewColumn *column,
+                  gpointer           data)
+{
+  GdictSourceChooser *chooser = GDICT_SOURCE_CHOOSER (data);
+  GdictSourceChooserPrivate *priv = chooser->priv;
+  GtkTreeIter iter;
+  gchar *name;
+  GdictSource *source;
+
+  if (!priv->loader)
+    return;
+
+  if (!gtk_tree_model_get_iter (GTK_TREE_MODEL (priv->store), &iter, path))
+    return;
+
+  gtk_tree_model_get (GTK_TREE_MODEL (priv->store), &iter,
+                      SOURCE_NAME, &name,
+                      -1);
+  if (!name)
+    return;
+
+  source = gdict_source_loader_get_source (priv->loader, name);
+  if (!source)
+    {
+      g_free (name);
+      return;
+    }
+
+  g_signal_emit (chooser, source_chooser_signals[SOURCE_ACTIVATED], 0,
+                 name, source);
+
+  g_free (name);
+  g_object_unref (source);
+}
+
+static void
+refresh_button_clicked_cb (GtkButton *button,
+                           gpointer   data)
+{
+  gdict_source_chooser_refresh (GDICT_SOURCE_CHOOSER (data));
+}
+
+static void
+selection_changed_cb (GtkTreeSelection *selection,
+                      gpointer          data)
+{
+  g_signal_emit (data, source_chooser_signals[SELECTION_CHANGED], 0);
+}
+
+static GObject *
+gdict_source_chooser_constructor (GType                  gtype,
+                                  guint                  n_params,
+                                  GObjectConstructParam *params)
+{
+  GdictSourceChooser *chooser;
+  GdictSourceChooserPrivate *priv;
+  GObjectClass *parent_class;
+  GObject *retval;
+  GtkWidget *sw;
+  GtkCellRenderer *renderer;
+  GtkTreeViewColumn *column;
+  GtkWidget *hbox;
+
+  parent_class = G_OBJECT_CLASS (gdict_source_chooser_parent_class);
+  retval = parent_class->constructor (gtype, n_params, params);
+
+  chooser = GDICT_SOURCE_CHOOSER (retval);
+  priv = chooser->priv;
+
+  gtk_widget_push_composite_child ();
+
+  sw = gtk_scrolled_window_new (NULL, NULL);
+  gtk_widget_set_composite_name (sw, "gdict-source-chooser-scrolled-window");
+  gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
+                                  GTK_POLICY_AUTOMATIC,
+                                  GTK_POLICY_AUTOMATIC);
+  gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (sw),
+                                       GTK_SHADOW_IN);
+  gtk_box_pack_start (GTK_BOX (chooser), sw, TRUE, TRUE, 0);
+  gtk_widget_show (sw);
+
+  renderer = gtk_cell_renderer_text_new ();
+  column = gtk_tree_view_column_new_with_attributes ("sources",
+                                                     renderer,
+                                                     "text", SOURCE_DESCRIPTION,
+                                                     "weight", SOURCE_CURRENT,
+                                                     NULL);
+  priv->treeview = gtk_tree_view_new ();
+  gtk_widget_set_composite_name (priv->treeview, "gdict-source-chooser-treeview");
+  gtk_tree_view_set_model (GTK_TREE_VIEW (priv->treeview),
+                           GTK_TREE_MODEL (priv->store));
+  gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (priv->treeview), FALSE);
+  gtk_tree_view_append_column (GTK_TREE_VIEW (priv->treeview), column);
+  g_signal_connect (gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->treeview)),
+                    "changed", G_CALLBACK (selection_changed_cb),
+                    chooser);
+  g_signal_connect (priv->treeview,
+                    "row-activated", G_CALLBACK (row_activated_cb),
+                    chooser);
+  gtk_container_add (GTK_CONTAINER (sw), priv->treeview);
+  gtk_widget_show (priv->treeview);
+
+  hbox = gtk_hbox_new (FALSE, 6);
+  priv->buttons_box = hbox;
+
+  priv->refresh_button = gtk_button_new ();
+  gtk_button_set_image (GTK_BUTTON (priv->refresh_button),
+                        gtk_image_new_from_stock (GTK_STOCK_REFRESH,
+                                                  GTK_ICON_SIZE_BUTTON));
+  g_signal_connect (priv->refresh_button,
+                    "clicked", G_CALLBACK (refresh_button_clicked_cb),
+                    chooser);
+  gtk_box_pack_start (GTK_BOX (hbox), priv->refresh_button, FALSE, FALSE, 0);
+  gtk_widget_show (priv->refresh_button);
+  gtk_widget_set_tooltip_text (priv->refresh_button,
+                               _("Reload the list of available sources"));
+
+  gtk_box_pack_end (GTK_BOX (chooser), hbox, FALSE, FALSE, 0);
+  gtk_widget_show (hbox);
+
+  gtk_widget_pop_composite_child ();
+
+  return retval;
+}
+
+static void
+gdict_source_chooser_class_init (GdictSourceChooserClass *klass)
+{
+  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+
+  g_type_class_add_private (klass, sizeof (GdictSourceChooserPrivate));
+
+  gobject_class->finalize = gdict_source_chooser_finalize;
+  gobject_class->dispose = gdict_source_chooser_dispose;
+  gobject_class->set_property = gdict_source_chooser_set_property;
+  gobject_class->get_property = gdict_source_chooser_get_property;
+  gobject_class->constructor = gdict_source_chooser_constructor;
+
+  /**
+   * GdictSourceChooser:loader:
+   *
+   * The #GdictSourceLoader used to retrieve the list of available
+   * dictionary sources.
+   *
+   * Since: 0.12
+   */
+  g_object_class_install_property (gobject_class,
+                                   PROP_LOADER,
+                                   g_param_spec_object ("loader",
+                                                        "Loader",
+                                                        "The GdictSourceLoader used to get the list of sources",
+                                                        GDICT_TYPE_SOURCE_LOADER,
+                                                        G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
+  /**
+   * GdictSourceChooser:count:
+   *
+   * The number of available dictionary sources, or -1 if no
+   * #GdictSourceLoader is set.
+   *
+   * Since: 0.12
+   */
+  g_object_class_install_property (gobject_class,
+                                   PROP_COUNT,
+                                   g_param_spec_int ("count",
+                                                     "Count",
+                                                     "The number of available dictionary sources",
+                                                     -1, G_MAXINT, -1,
+                                                     G_PARAM_READABLE));
+
+  /**
+   * GdictSourceChooser::source-activated:
+   * @chooser: the #GdictSourceChooser that received the signal
+   * @source_name: the name of the activated source
+   * @source: the activated #GdictSource
+   *
+   * The ::source-activated signal is emitted each time the user
+   * activates a row in the source chooser widget, either by double
+   * clicking on it or by a keyboard event.
+   *
+   * Since: 0.12
+   */
+  source_chooser_signals[SOURCE_ACTIVATED] =
+    g_signal_new ("source-activated",
+                  G_OBJECT_CLASS_TYPE (gobject_class),
+                  G_SIGNAL_RUN_LAST,
+                  G_STRUCT_OFFSET (GdictSourceChooserClass, source_activated),
+                  NULL, NULL,
+                  gdict_marshal_VOID__STRING_OBJECT,
+                  G_TYPE_NONE, 2,
+                  G_TYPE_STRING,
+                  GDICT_TYPE_SOURCE);
+  /**
+   * GdictSourceChooser::selection-changed:
+   * @chooser: the #GdictSourceChooser that received the signal
+   *
+   * The ::selection-changed signal is emitted each time the
+   * selection inside the source chooser widget has been changed.
+   *
+   * Since: 0.12
+   */
+  source_chooser_signals[SELECTION_CHANGED] =
+    g_signal_new ("selection-changed",
+                  G_OBJECT_CLASS_TYPE (gobject_class),
+                  G_SIGNAL_RUN_LAST,
+                  G_STRUCT_OFFSET (GdictSourceChooserClass, selection_changed),
+                  NULL, NULL,
+                  gdict_marshal_VOID__VOID,
+                  G_TYPE_NONE, 0);
+}
+
+static void
+gdict_source_chooser_init (GdictSourceChooser *chooser)
+{
+  GdictSourceChooserPrivate *priv;
+
+  chooser->priv = priv = GDICT_SOURCE_CHOOSER_GET_PRIVATE (chooser);
+
+  priv->store = gtk_list_store_new (SOURCE_N_COLUMNS,
+                                    G_TYPE_INT,    /* TRANSPORT */
+                                    G_TYPE_STRING, /* NAME */
+                                    G_TYPE_STRING, /* DESCRIPTION */
+                                    G_TYPE_INT     /* CURRENT */);
+
+  priv->loader = NULL;
+  priv->n_sources = -1;
+
+  priv->busy_cursor = gdk_cursor_new (GDK_WATCH);
+}
+
+/**
+ * gdict_source_chooser_new:
+ *
+ * Creates a new #GdictSourceChooser widget. This widget can be used to
+ * display the list of available dictionary sources.
+ *
+ * Return value: the newly created #GdictSourceChooser widget.
+ *
+ * Since: 0.12
+ */
+GtkWidget *
+gdict_source_chooser_new (void)
+{
+  return g_object_new (GDICT_TYPE_SOURCE_CHOOSER, NULL);
+}
+
+/**
+ * gdict_source_chooser_new_with_loader:
+ * @loader: a #GdictSourceLoader
+ *
+ * Creates a new #GdictSourceChooser widget and sets @loader as the
+ * #GdictSourceLoader object to be used to retrieve the list of
+ * available dictionary sources.
+ *
+ * Return value: the newly created #GdictSourceChooser widget.
+ *
+ * Since: 0.12
+ */
+GtkWidget *
+gdict_source_chooser_new_with_loader (GdictSourceLoader *loader)
+{
+  g_return_val_if_fail (GDICT_IS_SOURCE_LOADER (loader), NULL);
+
+  return g_object_new (GDICT_TYPE_SOURCE_CHOOSER, "loader", loader, NULL);
+}
+
+/**
+ * gdict_source_chooser_set_loader:
+ * @chooser: a #GdictSourceChooser
+ * @loader: a #GdictSourceLoader or %NULL to unset it
+ *
+ * Sets the #GdictSourceLoader to be used by the source chooser
+ * widget.
+ *
+ * Since: 0.12
+ */
+void
+gdict_source_chooser_set_loader (GdictSourceChooser *chooser,
+                                 GdictSourceLoader  *loader)
+{
+  GdictSourceChooserPrivate *priv;
+
+  g_return_if_fail (GDICT_IS_SOURCE_CHOOSER (chooser));
+  g_return_if_fail (loader == NULL || GDICT_IS_SOURCE_LOADER (loader));
+
+  priv = chooser->priv;
+
+  if (priv->loader != loader)
+    {
+      if (priv->loader)
+        g_object_unref (priv->loader);
+
+      if (loader)
+        {
+          priv->loader = g_object_ref (loader);
+          gdict_source_chooser_refresh (chooser);
+        }
+
+      g_object_notify (G_OBJECT (chooser), "loader");
+    }
+}
+
+/**
+ * gdict_source_chooser_get_loader:
+ * @chooser: a #GdictSourceChooser
+ * 
+ * Retrieves the #GdictSourceLoader used by @chooser.
+ *
+ * Return value: a #GdictSourceLoader or %NULL is none is set
+ *
+ * Since: 0.12
+ */
+GdictSourceLoader *
+gdict_source_chooser_get_loader (GdictSourceChooser *chooser)
+{
+  g_return_val_if_fail (GDICT_IS_SOURCE_CHOOSER (chooser), NULL);
+
+  return chooser->priv->loader;
+}
+
+typedef struct
+{
+  gchar *source_name;
+  GdictSourceChooser *chooser;
+  
+  guint found       : 1;
+  guint do_select   : 1;
+  guint do_activate : 1;
+} SelectData;
+
+static gboolean
+scan_for_source_name (GtkTreeModel *model,
+                      GtkTreePath  *path,
+                      GtkTreeIter  *iter,
+                      gpointer      user_data)
+{
+  SelectData *select_data = user_data;
+  gchar *source_name = NULL;
+
+  if (!select_data)
+    return TRUE;
+
+  gtk_tree_model_get (model, iter, SOURCE_NAME, &source_name, -1);
+  if (!source_name)
+    return FALSE;
+
+  if (strcmp (source_name, select_data->source_name) == 0)
+    {
+      GtkTreeView *tree_view;
+      GtkTreeSelection *selection;
+
+      select_data->found = TRUE;
+
+      tree_view = GTK_TREE_VIEW (select_data->chooser->priv->treeview);
+
+      if (select_data->do_activate)
+        {
+          GtkTreeViewColumn *column;
+
+          column = gtk_tree_view_get_column (tree_view, 2);
+
+          gtk_list_store_set (GTK_LIST_STORE (model), iter,
+                              SOURCE_CURRENT, PANGO_WEIGHT_BOLD,
+                              -1);
+
+          gtk_tree_view_row_activated (tree_view, path, column);
+        }
+
+      selection = gtk_tree_view_get_selection (tree_view);
+      if (select_data->do_select)
+        gtk_tree_selection_select_path (selection, path);
+      else
+        gtk_tree_selection_unselect_path (selection, path);
+    }
+  else
+    {
+      gtk_list_store_set (GTK_LIST_STORE (model), iter,
+                          SOURCE_CURRENT, PANGO_WEIGHT_NORMAL,
+                          -1);
+    }
+
+  g_free (source_name);
+
+  return FALSE;
+}
+
+/**
+ * gdict_source_chooser_select_source:
+ * @chooser: a #GdictSourceChooser
+ * @source_name: the name of a dictionary source
+ *
+ * Selects the dictionary source named @source_name inside @chooser.
+ * The selection is moved but the row containing the dictionary source
+ * is not activated.
+ *
+ * Return value: %TRUE if the source was found and selected
+ *
+ * Since: 0.12
+ */
+gboolean
+gdict_source_chooser_select_source (GdictSourceChooser *chooser,
+                                    const gchar        *source_name)
+{
+  GdictSourceChooserPrivate *priv;
+  SelectData data;
+  gboolean retval;
+
+  g_return_val_if_fail (GDICT_IS_SOURCE_CHOOSER (chooser), FALSE);
+  g_return_val_if_fail (source_name != NULL, FALSE);
+
+  priv = chooser->priv;
+
+  data.source_name = g_strdup (source_name);
+  data.chooser = chooser;
+  data.found = FALSE;
+  data.do_select = TRUE;
+  data.do_activate = FALSE;
+
+  gtk_tree_model_foreach (GTK_TREE_MODEL (priv->store),
+                          scan_for_source_name,
+                          &data);
+
+  retval = data.found;
+
+  g_free (data.source_name);
+
+  return retval;
+}
+
+/**
+ * gdict_source_chooser_unselect_source:
+ * @chooser: a #GdictSourceChooser
+ * @source_name: the name of a dictionary source
+ *
+ * Unselects @source_name inside @chooser.
+ *
+ * Return value: %TRUE if the source was found and unselected
+ *
+ * Since: 0.12
+ */
+gboolean
+gdict_source_chooser_unselect_source (GdictSourceChooser *chooser,
+                                      const gchar        *source_name)
+{
+  GdictSourceChooserPrivate *priv;
+  SelectData data;
+  gboolean retval;
+
+  g_return_val_if_fail (GDICT_IS_SOURCE_CHOOSER (chooser), FALSE);
+  g_return_val_if_fail (source_name != NULL, FALSE);
+
+  priv = chooser->priv;
+
+  data.source_name = g_strdup (source_name);
+  data.chooser = chooser;
+  data.found = FALSE;
+  data.do_select = FALSE;
+  data.do_activate = FALSE;
+
+  gtk_tree_model_foreach (GTK_TREE_MODEL (priv->store),
+                          scan_for_source_name,
+                          &data);
+
+  retval = data.found;
+
+  g_free (data.source_name);
+
+  return retval;
+}
+
+/**
+ * gdict_source_chooser_set_current_source:
+ * @chooser: a #GdictSourceChooser
+ * @source_name: the name of a dictionary source
+ *
+ * Sets the current dictionary source named @source_name. The row
+ * of the source, if found, will be selected and activated.
+ *
+ * Return value: %TRUE if the source was found
+ *
+ * Since: 0.12
+ */
+gboolean
+gdict_source_chooser_set_current_source (GdictSourceChooser *chooser,
+                                         const gchar        *source_name)
+{
+  GdictSourceChooserPrivate *priv;
+  SelectData data;
+  gboolean retval;
+
+  g_return_val_if_fail (GDICT_IS_SOURCE_CHOOSER (chooser), FALSE);
+  g_return_val_if_fail (source_name != NULL, FALSE);
+
+  priv = chooser->priv;
+
+  if (priv->current_source && !strcmp (priv->current_source, source_name))
+    return TRUE;
+
+  data.source_name = g_strdup (source_name);
+  data.chooser = chooser;
+  data.found = FALSE;
+  data.do_select = TRUE;
+  data.do_activate = TRUE;
+
+  gtk_tree_model_foreach (GTK_TREE_MODEL (priv->store),
+                          scan_for_source_name,
+                          &data);
+
+  retval = data.found;
+
+  GDICT_NOTE (CHOOSER, "%s current source: %s",
+              data.found ? "set" : "not set",
+              data.source_name);
+
+  if (data.found)
+    {
+      g_free (priv->current_source);
+      priv->current_source = data.source_name;
+    }
+  else
+    g_free (data.source_name);
+
+  return retval;
+}
+
+/**
+ * gdict_source_chooser_get_current_source:
+ * @chooser: a #GdictSourceChooser
+ *
+ * Retrieves the currently selected source.
+ *
+ * Return value: a newly allocated string containing the name of
+ *   the currently selected source. Use g_free() when done using it
+ *
+ * Since: 0.12
+ */
+gchar *
+gdict_source_chooser_get_current_source (GdictSourceChooser *chooser)
+{
+  GdictSourceChooserPrivate *priv;
+  GtkTreeSelection *selection;
+  GtkTreeModel *model;
+  GtkTreeIter iter;
+  gchar *retval = NULL;
+
+  g_return_val_if_fail (GDICT_IS_SOURCE_CHOOSER (chooser), NULL);
+  
+  priv = chooser->priv;
+
+  selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->treeview));
+  if (!gtk_tree_selection_get_selected (selection, &model, &iter))
+    return NULL;
+
+  gtk_tree_model_get (model, &iter, SOURCE_NAME, &retval, -1);
+  
+  g_free (priv->current_source);
+  priv->current_source = g_strdup (retval);
+
+  return retval;
+}
+
+/**
+ * gdict_source_chooser_get_sources:
+ * @chooser: a #GdictSouceChooser
+ * @length: return location for the length of the returned vector
+ *
+ * Retrieves the names of the available dictionary sources.
+ *
+ * Return value: a newly allocated, %NULL terminated string vector
+ *   containing the names of the available sources. Use g_strfreev()
+ *   when done using it.
+ *
+ * Since: 0.12
+ */
+gchar **
+gdict_source_chooser_get_sources (GdictSourceChooser *chooser,
+                                  gsize              *length)
+{
+  GdictSourceChooserPrivate *priv;
+  gchar **retval;
+  gsize retval_len;
+
+  g_return_val_if_fail (GDICT_IS_SOURCE_CHOOSER (chooser), NULL);
+
+  priv = chooser->priv;
+
+  if (!priv->loader)
+    return NULL;
+
+  retval = gdict_source_loader_get_names (priv->loader, &retval_len);
+  if (length)
+    *length = retval_len;
+
+  return retval;
+}
+
+/**
+ * gdict_source_chooser_count_sources:
+ * @chooser: a #GdictSourceChooser
+ *
+ * Retrieve the number of available dictionary sources.
+ *
+ * Return value: the number of available sources, or -1 if no
+ *   #GdictSourceLoader has been set
+ *
+ * Since: 0.12
+ */
+gint
+gdict_source_chooser_count_sources (GdictSourceChooser *chooser)
+{
+  g_return_val_if_fail (GDICT_IS_SOURCE_CHOOSER (chooser), -1);
+
+  return chooser->priv->n_sources;
+}
+
+/**
+ * gdict_source_chooser_has_source:
+ * @chooser: a #GdictSourceChooser
+ * @source_name: the name of a dictionary source
+ *
+ * Checks whether @chooser has a dictionary source named @source_name.
+ *
+ * Return value: %TRUE if the dictionary source was found
+ *
+ * Since: 0.12
+ */
+gboolean
+gdict_source_chooser_has_source (GdictSourceChooser *chooser,
+                                 const gchar        *source_name)
+{
+  GdictSourceChooserPrivate *priv;
+
+  g_return_val_if_fail (GDICT_IS_SOURCE_CHOOSER (chooser), FALSE);
+  g_return_val_if_fail (source_name != NULL, FALSE);
+
+  priv = chooser->priv;
+
+  if (!priv->loader)
+    return FALSE;
+
+  return gdict_source_loader_has_source (priv->loader, source_name);
+}
+
+/**
+ * gdict_source_chooser_refresh:
+ * @chooser: a #GdictSourceChooser
+ *
+ * Forces a refresh on the contents of the source chooser widget
+ *
+ * Since: 0.12
+ */
+void
+gdict_source_chooser_refresh (GdictSourceChooser *chooser)
+{
+  GdictSourceChooserPrivate *priv;
+
+  g_return_if_fail (GDICT_IS_SOURCE_CHOOSER (chooser));
+
+  priv = chooser->priv;
+
+  if (priv->loader)
+    {
+      const GSList *sources, *l;
+
+      if (priv->treeview)
+        gtk_tree_view_set_model (GTK_TREE_VIEW (priv->treeview), NULL);
+
+      gtk_list_store_clear (priv->store);
+
+      sources = gdict_source_loader_get_sources (priv->loader);
+      for (l = sources; l != NULL; l = l->next)
+        {
+          GdictSource *source = l->data;
+          const gchar *name, *description;
+          GdictSourceTransport transport;
+          gint weight;
+
+          transport = gdict_source_get_transport (source);
+          name = gdict_source_get_name (source);
+          description = gdict_source_get_description (source);
+          weight = PANGO_WEIGHT_NORMAL;
+
+          if (priv->current_source && !strcmp (priv->current_source, name))
+            weight = PANGO_WEIGHT_BOLD;
+
+          gtk_list_store_insert_with_values (priv->store, NULL, -1,
+                                             SOURCE_TRANSPORT, transport,
+                                             SOURCE_NAME, name,
+                                             SOURCE_DESCRIPTION, description,
+                                             SOURCE_CURRENT, weight,
+                                             -1);
+        }
+
+      if (priv->treeview)
+        gtk_tree_view_set_model (GTK_TREE_VIEW (priv->treeview),
+                                 GTK_TREE_MODEL (priv->store));
+    }
+}
+
+/**
+ * gdict_source_chooser_add_button:
+ * @chooser: a #GdictSourceChooser
+ * @button_text: text of the button
+ *
+ * Adds a #GtkButton with @button_text to the button area on
+ * the bottom of @chooser. The @button_text can also be a
+ * stock ID.
+ *
+ * Return value: the newly packed button.
+ *
+ * Since: 0.12
+ */
+GtkWidget *
+gdict_source_chooser_add_button (GdictSourceChooser *chooser,
+                                 const gchar        *button_text)
+{
+  GdictSourceChooserPrivate *priv;
+  GtkWidget *button;
+
+  g_return_val_if_fail (GDICT_IS_SOURCE_CHOOSER (chooser), NULL);
+  g_return_val_if_fail (button_text != NULL, NULL);
+
+  priv = chooser->priv;
+
+  button = gtk_button_new_from_stock (button_text);
+
+  gtk_widget_set_can_default (button, TRUE);
+
+  gtk_widget_show (button);
+
+  gtk_box_pack_end (GTK_BOX (priv->buttons_box), button, FALSE, TRUE, 0);
+
+  return button;
+}
+