Moved from Mate-Extra repository

1 files changed, 1142 insertions, 0 deletions

diff --git a/mate-dictionary/libgdict/gdict-database-chooser.c b/mate-dictionary/libgdict/gdict-database-chooser.c
new file mode 100644
index 00000000..475b150b
--- /dev/null
+++ b/mate-dictionary/libgdict/gdict-database-chooser.c
@@ -0,0 +1,1142 @@
+/* gdict-database-chooser.c - display widget for database names
+ *
+ * Copyright (C) 2006  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-database-chooser
+ * @short_description: Display the list of available databases
+ *
+ * Each #GdictContext has a list of databases, that is dictionaries that
+ * can be queried. #GdictDatabaseChooser is a widget that queries a given
+ * #GdictContext and displays the list of available databases.
+ *
+ * #GdictDatabaseChooser is available since Gdict 0.10
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+
+#include <gdk/gdkkeysyms.h>
+#include <gtk/gtk.h>
+#include <glib/gi18n-lib.h>
+
+#include "gdict-database-chooser.h"
+#include "gdict-utils.h"
+#include "gdict-debug.h"
+#include "gdict-private.h"
+#include "gdict-enum-types.h"
+#include "gdict-marshal.h"
+
+#define GDICT_DATABASE_CHOOSER_GET_PRIVATE(obj) \
+(G_TYPE_INSTANCE_GET_PRIVATE ((obj), GDICT_TYPE_DATABASE_CHOOSER, GdictDatabaseChooserPrivate))
+
+struct _GdictDatabaseChooserPrivate
+{
+  GtkListStore *store;
+
+  GtkWidget *treeview;
+  GtkWidget *clear_button;
+  GtkWidget *refresh_button;
+  GtkWidget *buttons_box;
+  
+  GdictContext *context;
+  gint results;
+
+  guint start_id;
+  guint match_id;
+  guint end_id;
+  guint error_id;
+
+  GdkCursor *busy_cursor;
+
+  gchar *current_db;
+
+  guint is_searching : 1;
+};
+
+enum
+{
+  DATABASE_NAME,
+  DATABASE_ERROR
+} DBType;
+
+enum
+{
+  DB_COLUMN_TYPE,
+  DB_COLUMN_NAME,
+  DB_COLUMN_DESCRIPTION,
+  DB_COLUMN_CURRENT,
+
+  DB_N_COLUMNS
+};
+
+enum
+{
+  PROP_0,
+  
+  PROP_CONTEXT,
+  PROP_COUNT
+};
+
+enum
+{
+  DATABASE_ACTIVATED,
+  SELECTION_CHANGED,
+
+  LAST_SIGNAL
+};
+
+static guint db_chooser_signals[LAST_SIGNAL] = { 0 };
+
+G_DEFINE_TYPE (GdictDatabaseChooser,
+               gdict_database_chooser,
+               GTK_TYPE_VBOX);
+
+
+static void
+set_gdict_context (GdictDatabaseChooser *chooser,
+		   GdictContext         *context)
+{
+  GdictDatabaseChooserPrivate *priv;
+  
+  g_assert (GDICT_IS_DATABASE_CHOOSER (chooser));
+  priv = chooser->priv;
+  
+  if (priv->context)
+    {
+      if (priv->start_id)
+        {
+          GDICT_NOTE (CHOOSER, "Removing old context handlers");
+          
+          g_signal_handler_disconnect (priv->context, priv->start_id);
+          g_signal_handler_disconnect (priv->context, priv->match_id);
+          g_signal_handler_disconnect (priv->context, priv->end_id);
+          
+          priv->start_id = 0;
+          priv->end_id = 0;
+          priv->match_id = 0;
+        }
+      
+      if (priv->error_id)
+        {
+          g_signal_handler_disconnect (priv->context, priv->error_id);
+
+          priv->error_id = 0;
+        }
+
+      GDICT_NOTE (CHOOSER, "Removing old context");
+      
+      g_object_unref (G_OBJECT (priv->context));
+
+      priv->context = NULL;
+      priv->results = -1;
+    }
+
+  if (!context)
+    return;
+
+  if (!GDICT_IS_CONTEXT (context))
+    {
+      g_warning ("Object of type '%s' instead of a GdictContext\n",
+      		 g_type_name (G_OBJECT_TYPE (context)));
+      return;
+    }
+
+  GDICT_NOTE (CHOOSER, "Setting new context");
+    
+  priv->context = g_object_ref (context);
+  priv->results = 0;
+}
+
+static void
+gdict_database_chooser_finalize (GObject *gobject)
+{
+  GdictDatabaseChooser *chooser = GDICT_DATABASE_CHOOSER (gobject);
+  GdictDatabaseChooserPrivate *priv = chooser->priv;
+
+  g_free (priv->current_db);
+  
+  G_OBJECT_CLASS (gdict_database_chooser_parent_class)->finalize (gobject);
+}
+
+static void
+gdict_database_chooser_dispose (GObject *gobject)
+{
+  GdictDatabaseChooser *chooser = GDICT_DATABASE_CHOOSER (gobject);
+  GdictDatabaseChooserPrivate *priv = chooser->priv;
+
+  set_gdict_context (chooser, NULL);
+
+  if (priv->busy_cursor)
+    {
+      gdk_cursor_unref (priv->busy_cursor);
+      priv->busy_cursor = NULL;
+    }
+
+  if (priv->store)
+    {
+      g_object_unref (priv->store);
+      priv->store = NULL;
+    }
+
+  G_OBJECT_CLASS (gdict_database_chooser_parent_class)->dispose (gobject);
+}
+
+static void
+gdict_database_chooser_set_property (GObject      *gobject,
+				     guint         prop_id,
+				     const GValue *value,
+				     GParamSpec   *pspec)
+{
+  GdictDatabaseChooser *chooser = GDICT_DATABASE_CHOOSER (gobject);
+  
+  switch (prop_id)
+    {
+    case PROP_CONTEXT:
+      set_gdict_context (chooser, g_value_get_object (value));
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
+      break;
+    }
+}
+
+static void
+gdict_database_chooser_get_property (GObject    *gobject,
+				     guint       prop_id,
+				     GValue     *value,
+				     GParamSpec *pspec)
+{
+  GdictDatabaseChooser *chooser = GDICT_DATABASE_CHOOSER (gobject);
+  
+  switch (prop_id)
+    {
+    case PROP_CONTEXT:
+      g_value_set_object (value, chooser->priv->context);
+      break;
+    case PROP_COUNT:
+      g_value_set_int (value, chooser->priv->results);
+      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           user_data)
+{
+  GdictDatabaseChooser *chooser = GDICT_DATABASE_CHOOSER (user_data);
+  GdictDatabaseChooserPrivate *priv = chooser->priv;
+  GtkTreeIter iter;
+  gchar *db_name, *db_desc;
+  gboolean valid;
+
+  valid = gtk_tree_model_get_iter (GTK_TREE_MODEL (priv->store),
+		  		   &iter,
+				   path);
+  if (!valid)
+    {
+      g_warning ("Invalid iterator found");
+      return;
+    }
+
+  gtk_tree_model_get (GTK_TREE_MODEL (priv->store), &iter,
+		      DB_COLUMN_NAME, &db_name,
+		      DB_COLUMN_DESCRIPTION, &db_desc,
+		      -1);
+  if (db_name && db_desc)
+    {
+      g_free (priv->current_db);
+      priv->current_db = g_strdup (db_name);
+
+      g_signal_emit (chooser, db_chooser_signals[DATABASE_ACTIVATED], 0,
+		     db_name, db_desc);
+    }
+  else
+    {
+      gchar *row = gtk_tree_path_to_string (path);
+
+      g_warning ("Row %s activated, but no database attached", row);
+      g_free (row);
+    }
+
+  g_free (db_name);
+  g_free (db_desc);
+}
+
+static void
+refresh_button_clicked_cb (GtkWidget *widget,
+			   gpointer   user_data)
+{
+  GdictDatabaseChooser *chooser = GDICT_DATABASE_CHOOSER (user_data);
+
+  gdict_database_chooser_refresh (chooser);
+}
+
+static void
+clear_button_clicked_cb (GtkWidget *widget,
+			 gpointer   user_data)
+{
+  GdictDatabaseChooser *chooser = GDICT_DATABASE_CHOOSER (user_data);
+
+  gdict_database_chooser_clear (chooser);
+}
+
+static void
+selection_changed_cb (GtkTreeSelection *selection,
+                      gpointer          user_data)
+{
+  g_signal_emit (user_data, db_chooser_signals[SELECTION_CHANGED], 0);
+}
+
+static GObject *
+gdict_database_chooser_constructor (GType                  type,
+				    guint                  n_params,
+				    GObjectConstructParam *params)
+{
+  GObjectClass *parent_class;
+  GObject *object;
+  GdictDatabaseChooser *chooser;
+  GdictDatabaseChooserPrivate *priv;
+  GtkWidget *sw;
+  GtkCellRenderer *renderer;
+  GtkTreeViewColumn *column;
+  GtkWidget *hbox;
+
+  parent_class = G_OBJECT_CLASS (gdict_database_chooser_parent_class);
+  object = parent_class->constructor (type, n_params, params);
+
+  chooser = GDICT_DATABASE_CHOOSER (object);
+  priv = chooser->priv;
+
+  gtk_widget_push_composite_child ();
+
+  sw = gtk_scrolled_window_new (NULL, NULL);
+  gtk_widget_set_composite_name (sw, "gdict-database-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 ("databases",
+		  				     renderer,
+						     "text", DB_COLUMN_DESCRIPTION,
+                                                     "weight", DB_COLUMN_CURRENT,
+						     NULL);
+  priv->treeview = gtk_tree_view_new ();
+  gtk_widget_set_composite_name (priv->treeview, "gdict-database-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, 0);
+  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_SMALL_TOOLBAR));
+  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 databases"));
+
+  priv->clear_button = gtk_button_new ();
+  gtk_button_set_image (GTK_BUTTON (priv->clear_button),
+		        gtk_image_new_from_stock (GTK_STOCK_CLEAR,
+						  GTK_ICON_SIZE_SMALL_TOOLBAR));
+  g_signal_connect (priv->clear_button, "clicked",
+		    G_CALLBACK (clear_button_clicked_cb),
+		    chooser);
+  gtk_box_pack_start (GTK_BOX (hbox), priv->clear_button, FALSE, FALSE, 0);
+  gtk_widget_show (priv->clear_button);
+  gtk_widget_set_tooltip_text (priv->clear_button,
+                               _("Clear the list of available databases"));
+
+  gtk_box_pack_end (GTK_BOX (chooser), hbox, FALSE, FALSE, 0);
+  gtk_widget_show (hbox);
+  
+  gtk_widget_pop_composite_child ();
+
+  return object;
+}
+
+static void
+gdict_database_chooser_class_init (GdictDatabaseChooserClass *klass)
+{
+  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+  
+  gobject_class->finalize = gdict_database_chooser_finalize;
+  gobject_class->dispose = gdict_database_chooser_dispose;
+  gobject_class->set_property = gdict_database_chooser_set_property;
+  gobject_class->get_property = gdict_database_chooser_get_property;
+  gobject_class->constructor = gdict_database_chooser_constructor;
+
+  /**
+   * GdictDatabaseChooser:context:
+   *
+   * The #GdictContext used to retrieve the list of available databases.
+   *
+   * Since: 0.10
+   */
+  g_object_class_install_property (gobject_class,
+  				   PROP_CONTEXT,
+  				   g_param_spec_object ("context",
+  				   			"Context",
+  				   			"The GdictContext object used to get the list of databases",
+  				   			GDICT_TYPE_CONTEXT,
+  				   			(G_PARAM_READWRITE | G_PARAM_CONSTRUCT)));
+  /**
+   * GdictDatabaseChooser:count:
+   *
+   * The number of displayed databases or, if no #GdictContext is set, -1.
+   *
+   * Since: 0.12
+   */
+  g_object_class_install_property (gobject_class,
+                                   PROP_COUNT,
+                                   g_param_spec_int ("count",
+                                                     "Count",
+                                                     "The number of available databases",
+                                                     -1, G_MAXINT, -1,
+                                                     G_PARAM_READABLE));
+
+  /**
+   * GdictDatabaseChooser::database-activated:
+   * @chooser: the database chooser that received the signal
+   * @name: the name of the activated database
+   * @description: the description of the activated database
+   *
+   * The ::database-activated signal is emitted each time the user
+   * activated a row in the database chooser widget, either by double
+   * clicking on it or by a keyboard event.
+   *
+   * Since: 0.10
+   */
+  db_chooser_signals[DATABASE_ACTIVATED] =
+    g_signal_new ("database-activated",
+		  G_OBJECT_CLASS_TYPE (gobject_class),
+		  G_SIGNAL_RUN_LAST,
+		  G_STRUCT_OFFSET (GdictDatabaseChooserClass, database_activated),
+		  NULL, NULL,
+		  gdict_marshal_VOID__STRING_STRING,
+		  G_TYPE_NONE, 2,
+		  G_TYPE_STRING,
+		  G_TYPE_STRING);
+  /**
+   * GdictDatabaseChooser::selection-changed:
+   * @chooser: the database chooser that received the signal
+   *
+   * The ::selection-changed signal is emitted each time the selection
+   * inside the database chooser has been changed.
+   *
+   * Since: 0.12
+   */
+  db_chooser_signals[SELECTION_CHANGED] =
+    g_signal_new ("selection-changed",
+                  G_OBJECT_CLASS_TYPE (gobject_class),
+                  G_SIGNAL_RUN_LAST,
+                  G_STRUCT_OFFSET (GdictDatabaseChooserClass, selection_changed),
+                  NULL, NULL,
+                  gdict_marshal_VOID__VOID,
+                  G_TYPE_NONE, 0);
+
+  g_type_class_add_private (gobject_class, sizeof (GdictDatabaseChooserPrivate));
+}
+
+static void
+gdict_database_chooser_init (GdictDatabaseChooser *chooser)
+{
+  GdictDatabaseChooserPrivate *priv;
+
+  chooser->priv = priv = GDICT_DATABASE_CHOOSER_GET_PRIVATE (chooser);
+
+  priv->results = -1;
+  priv->context = NULL;
+
+  priv->store = gtk_list_store_new (DB_N_COLUMNS,
+		                    G_TYPE_INT,    /* db_type */
+		                    G_TYPE_STRING, /* db_name */
+				    G_TYPE_STRING, /* db_desc */
+                                    G_TYPE_INT     /* db_current */);
+
+  priv->start_id = 0;
+  priv->end_id = 0;
+  priv->match_id = 0;
+  priv->error_id = 0;
+}
+
+/**
+ * gdict_database_chooser_new:
+ *
+ * Creates a new #GdictDatabaseChooser widget. A Database chooser widget
+ * can be used to display the list of available databases on a dictionary
+ * source using the #GdictContext representing it. After creation, the
+ * #GdictContext can be set using gdict_database_chooser_set_context().
+ *
+ * Return value: the newly created #GdictDatabaseChooser widget.
+ *
+ * Since: 0.10
+ */
+GtkWidget *
+gdict_database_chooser_new (void)
+{
+  return g_object_new (GDICT_TYPE_DATABASE_CHOOSER, NULL);
+}
+
+/**
+ * gdict_database_chooser_new_with_context:
+ * @context: a #GdictContext
+ *
+ * Creates a new #GdictDatabaseChooser, using @context as the representation
+ * of the dictionary source to query for the list of available databases.
+ *
+ * Return value: the newly created #GdictDatabaseChooser widget.
+ *
+ * Since: 0.10
+ */
+GtkWidget *
+gdict_database_chooser_new_with_context (GdictContext *context)
+{
+  g_return_val_if_fail (GDICT_IS_CONTEXT (context), NULL);
+  
+  return g_object_new (GDICT_TYPE_DATABASE_CHOOSER,
+                       "context", context,
+                       NULL);
+}
+
+/**
+ * gdict_database_chooser_get_context:
+ * @chooser: a #GdictDatabaseChooser
+ *
+ * Retrieves the #GdictContext used by @chooser.
+ *
+ * Return value: a #GdictContext or %NULL
+ *
+ * Since: 0.10
+ */
+GdictContext *
+gdict_database_chooser_get_context (GdictDatabaseChooser *chooser)
+{
+  g_return_val_if_fail (GDICT_IS_DATABASE_CHOOSER (chooser), NULL);
+  
+  return chooser->priv->context;
+}
+
+/**
+ * gdict_database_chooser_set_context:
+ * @chooser: a #GdictDatabaseChooser
+ * @context: a #GdictContext
+ *
+ * Sets the #GdictContext to be used to query a dictionary source
+ * for the list of available databases.
+ *
+ * Since: 0.10
+ */
+void
+gdict_database_chooser_set_context (GdictDatabaseChooser *chooser,
+				    GdictContext         *context)
+{
+  g_return_if_fail (GDICT_IS_DATABASE_CHOOSER (chooser));
+  g_return_if_fail (context == NULL || GDICT_IS_CONTEXT (context));
+
+  set_gdict_context (chooser, context);
+
+  g_object_notify (G_OBJECT (chooser), "context");
+}
+
+/**
+ * gdict_database_chooser_get_databases:
+ * @chooser: a #GdictDatabaseChooser
+ * @length: return location for the length of the returned vector
+ *
+ * Gets the list of available database names.
+ *
+ * Return value: a newly allocated, %NULL terminated string vector
+ *   containing database names. Use g_strfreev() to deallocate it.
+ *
+ * Since: 0.10
+ */
+gchar **
+gdict_database_chooser_get_databases (GdictDatabaseChooser  *chooser,
+				      gsize                 *length)
+{
+  GdictDatabaseChooserPrivate *priv;
+  GtkTreeIter iter;
+  gchar **retval;
+  gsize i;
+
+  g_return_val_if_fail (GDICT_IS_DATABASE_CHOOSER (chooser), NULL);
+
+  priv = chooser->priv;
+
+  if (!gtk_tree_model_get_iter_first (GTK_TREE_MODEL (priv->store), &iter))
+    return NULL;
+
+  i = 0;
+  retval = g_new (gchar*, priv->results);
+
+  do
+    {
+      gchar *db_name;
+
+      gtk_tree_model_get (GTK_TREE_MODEL (priv->store), &iter,
+                          DB_COLUMN_NAME, &db_name,
+                          -1);
+
+      retval[i++] = db_name;
+    }
+  while (gtk_tree_model_iter_next (GTK_TREE_MODEL (priv->store), &iter));
+
+  retval[i] = NULL;
+
+  if (length)
+    *length = i;
+
+  return retval;
+}
+
+/**
+ * gdict_database_chooser_has_database:
+ * @chooser: a #GdictDatabaseChooser
+ * @database: the name of a database
+ *
+ * Checks whether the @chooser displays @database
+ *
+ * Return value: %TRUE if the search database name is present
+ *
+ * Since: 0.10
+ */
+gboolean
+gdict_database_chooser_has_database (GdictDatabaseChooser *chooser,
+				     const gchar          *database)
+{
+  GdictDatabaseChooserPrivate *priv;
+  GtkTreeIter iter;
+  gboolean retval;
+
+  g_return_val_if_fail (GDICT_IS_DATABASE_CHOOSER (chooser), FALSE);
+  g_return_val_if_fail (database != NULL, FALSE);
+
+  priv = chooser->priv;
+
+  if (!gtk_tree_model_get_iter_first (GTK_TREE_MODEL (priv->store), &iter))
+    return FALSE;
+
+  retval = FALSE;
+
+  do
+    {
+      gchar *db_name;
+
+      gtk_tree_model_get (GTK_TREE_MODEL (priv->store), &iter,
+                          DB_COLUMN_NAME, &db_name,
+                          -1);
+      
+      if (strcmp (db_name, database) == 0)
+        {
+          g_free (db_name);
+          retval = TRUE;
+          break;
+        }
+      
+      g_free (db_name);
+    }
+  while (gtk_tree_model_iter_next (GTK_TREE_MODEL (priv->store), &iter));
+
+  return retval;
+}
+
+/**
+ * gdict_database_chooser_count_databases:
+ * @chooser: a #GdictDatabaseChooser
+ *
+ * Returns the number of databases found.
+ *
+ * Return value: the number of databases or -1 if no context is set
+ *
+ * Since: 0.10
+ */
+gint
+gdict_database_chooser_count_databases (GdictDatabaseChooser *chooser)
+{
+  g_return_val_if_fail (GDICT_IS_DATABASE_CHOOSER (chooser), -1);
+
+  return chooser->priv->results;
+}
+
+static void
+lookup_start_cb (GdictContext *context,
+		 gpointer      user_data)
+{
+  GdictDatabaseChooser *chooser = GDICT_DATABASE_CHOOSER (user_data);
+  GdictDatabaseChooserPrivate *priv = chooser->priv;
+
+  if (!priv->busy_cursor)
+    priv->busy_cursor = gdk_cursor_new (GDK_WATCH);
+
+  if (gtk_widget_get_window (GTK_WIDGET (chooser)))
+    gdk_window_set_cursor (gtk_widget_get_window (GTK_WIDGET (chooser)), priv->busy_cursor);
+
+  priv->is_searching = TRUE;
+}
+
+static void
+lookup_end_cb (GdictContext *context,
+	       gpointer      user_data)
+{
+  GdictDatabaseChooser *chooser = GDICT_DATABASE_CHOOSER (user_data);
+  GdictDatabaseChooserPrivate *priv = chooser->priv;
+
+  if (gtk_widget_get_window (GTK_WIDGET (chooser)))
+    gdk_window_set_cursor (gtk_widget_get_window (GTK_WIDGET (chooser)), NULL);
+
+  priv->is_searching = FALSE;
+}
+
+static void
+database_found_cb (GdictContext  *context,
+		   GdictDatabase *database,
+		   gpointer       user_data)
+{
+  GdictDatabaseChooser *chooser = GDICT_DATABASE_CHOOSER (user_data);
+  GdictDatabaseChooserPrivate *priv = chooser->priv;
+  GtkTreeIter iter;
+  const gchar *name, *full_name;
+  gint weight = PANGO_WEIGHT_NORMAL;
+
+  name = gdict_database_get_name (database);
+  full_name = gdict_database_get_full_name (database);
+
+  if (priv->current_db && !strcmp (priv->current_db, name))
+    weight = PANGO_WEIGHT_BOLD;
+
+  GDICT_NOTE (CHOOSER, "DATABASE: `%s' (`%s')",
+              name,
+              full_name);
+  
+  gtk_list_store_append (priv->store, &iter);
+  gtk_list_store_set (priv->store, &iter,
+		      DB_COLUMN_TYPE, DATABASE_NAME,
+		      DB_COLUMN_NAME, name,
+		      DB_COLUMN_DESCRIPTION, full_name,
+                      DB_COLUMN_CURRENT, weight,
+		      -1);
+
+  priv->results += 1;
+}
+
+static void
+error_cb (GdictContext *context,
+          const GError *error,
+	  gpointer      user_data)
+{
+  GdictDatabaseChooser *chooser = GDICT_DATABASE_CHOOSER (user_data);
+
+  if (gtk_widget_get_window (GTK_WIDGET (chooser)))
+    gdk_window_set_cursor (gtk_widget_get_window (GTK_WIDGET (chooser)), NULL);
+
+  chooser->priv->is_searching = FALSE;
+  chooser->priv->results = 0;
+}
+
+/**
+ * gdict_database_chooser_refresh:
+ * @chooser: a #GdictDatabaseChooser
+ *
+ * Reloads the list of available databases.
+ *
+ * Since: 0.10
+ */
+void
+gdict_database_chooser_refresh (GdictDatabaseChooser *chooser)
+{
+  GdictDatabaseChooserPrivate *priv;
+  GError *db_error;
+  
+  g_return_if_fail (GDICT_IS_DATABASE_CHOOSER (chooser));
+
+  priv = chooser->priv;
+
+  if (!priv->context)
+    {
+      g_warning ("Attempting to retrieve the available databases, but "
+		 "no GdictContext has been set.  Use gdict_database_chooser_set_context() "
+		 "before invoking gdict_database_chooser_refresh().");
+      return;
+    }
+
+  if (priv->is_searching)
+    return;
+
+  gdict_database_chooser_clear (chooser);
+
+  if (!priv->start_id)
+    {
+      priv->start_id = g_signal_connect (priv->context, "lookup-start",
+		      			 G_CALLBACK (lookup_start_cb),
+					 chooser);
+      priv->match_id = g_signal_connect (priv->context, "database-found",
+		      			 G_CALLBACK (database_found_cb),
+					 chooser);
+      priv->end_id = g_signal_connect (priv->context, "lookup-end",
+		      		       G_CALLBACK (lookup_end_cb),
+				       chooser);
+    }
+
+  if (!priv->error_id)
+    priv->error_id = g_signal_connect (priv->context, "error",
+		    		       G_CALLBACK (error_cb),
+				       chooser);
+
+  db_error = NULL;
+  gdict_context_lookup_databases (priv->context, &db_error);
+  if (db_error)
+    {
+      GtkTreeIter iter;
+
+      gtk_list_store_append (priv->store, &iter);
+      gtk_list_store_set (priv->store, &iter,
+		      	  DB_COLUMN_TYPE, DATABASE_ERROR,
+			  DB_COLUMN_NAME, _("Error while matching"),
+			  DB_COLUMN_DESCRIPTION, NULL,
+			  -1);
+
+      g_warning ("Error while looking for databases: %s",
+                 db_error->message);
+
+      g_error_free (db_error);
+    }
+}
+
+/**
+ * gdict_database_chooser_clear:
+ * @chooser: a #GdictDatabaseChooser
+ *
+ * Clears @chooser.
+ *
+ * Since: 0.10
+ */
+void
+gdict_database_chooser_clear (GdictDatabaseChooser *chooser)
+{
+  GdictDatabaseChooserPrivate *priv;
+
+  g_return_if_fail (GDICT_IS_DATABASE_CHOOSER (chooser));
+
+  priv = chooser->priv;
+
+  gtk_tree_view_set_model (GTK_TREE_VIEW (priv->treeview), NULL);
+
+  gtk_list_store_clear (priv->store);
+  priv->results = 0;
+
+  gtk_tree_view_set_model (GTK_TREE_VIEW (priv->treeview),
+		  	   GTK_TREE_MODEL (priv->store));
+}
+
+typedef struct
+{
+  gchar *db_name;
+  GdictDatabaseChooser *chooser;
+  
+  guint found       : 1;
+  guint do_select   : 1;
+  guint do_activate : 1;
+} SelectData;
+
+static gboolean
+scan_for_db_name (GtkTreeModel *model,
+                  GtkTreePath  *path,
+                  GtkTreeIter  *iter,
+                  gpointer      user_data)
+{
+  SelectData *select_data = user_data;
+  gchar *db_name = NULL;
+
+  if (!select_data)
+    return TRUE;
+
+  gtk_tree_model_get (model, iter, DB_COLUMN_NAME, &db_name, -1);
+  if (!db_name)
+    return FALSE;
+
+  if (strcmp (db_name, select_data->db_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;
+
+          gtk_list_store_set (GTK_LIST_STORE (model), iter,
+                              DB_COLUMN_CURRENT, PANGO_WEIGHT_BOLD,
+                              -1);
+
+          column = gtk_tree_view_get_column (tree_view, 0);
+          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,
+                          DB_COLUMN_CURRENT, PANGO_WEIGHT_NORMAL,
+                          -1);
+    }
+
+  g_free (db_name);
+
+  return FALSE;
+}
+
+/**
+ * gdict_database_chooser_select_database:
+ * @chooser: a #GdictDatabaseChooser
+ * @db_name: name of the database to select
+ *
+ * Selects the database with @db_name inside the @chooser widget.
+ *
+ * Return value: %TRUE if the database was found and selected
+ *
+ * Since: 0.10
+ */
+gboolean
+gdict_database_chooser_select_database (GdictDatabaseChooser *chooser,
+                                        const gchar          *db_name)
+{
+  GdictDatabaseChooserPrivate *priv;
+  SelectData data;
+  gboolean retval;
+
+  g_return_val_if_fail (GDICT_IS_DATABASE_CHOOSER (chooser), FALSE);
+  g_return_val_if_fail (db_name != NULL, FALSE);
+
+  priv = chooser->priv;
+
+  data.db_name = g_strdup (db_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_db_name,
+                          &data);
+
+  retval = data.found;
+
+  g_free (data.db_name);
+
+  return retval;
+}
+
+/**
+ * gdict_database_chooser_unselect_database:
+ * @chooser: a #GdictDatabaseChooser
+ * @db_name: name of the database to unselect
+ *
+ * Unselects the database @db_name inside the @chooser widget
+ *
+ * Return value: %TRUE if the database was found and unselected
+ *
+ * Since: 0.10
+ */
+gboolean
+gdict_database_chooser_unselect_database (GdictDatabaseChooser *chooser,
+                                          const gchar          *db_name)
+{
+  GdictDatabaseChooserPrivate *priv;
+  SelectData data;
+  gboolean retval;
+
+  g_return_val_if_fail (GDICT_IS_DATABASE_CHOOSER (chooser), FALSE);
+  g_return_val_if_fail (db_name != NULL, FALSE);
+
+  priv = chooser->priv;
+
+  data.db_name = g_strdup (db_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_db_name,
+                          &data);
+
+  retval = data.found;
+
+  g_free (data.db_name);
+
+  return retval;
+}
+
+/**
+ * gdict_database_chooser_set_current_database:
+ * @chooser: a #GdictDatabaseChooser
+ * @db_name: the name of the database
+ *
+ * Sets @db_name as the current database. This function will select
+ * and activate the corresponding row, if the database is found.
+ *
+ * Return value: %TRUE if the database was found and set
+ *
+ * Since: 0.10
+ */
+gboolean
+gdict_database_chooser_set_current_database (GdictDatabaseChooser *chooser,
+                                             const gchar          *db_name)
+{
+  GdictDatabaseChooserPrivate *priv;
+  SelectData data;
+  gboolean retval;
+
+  g_return_val_if_fail (GDICT_IS_DATABASE_CHOOSER (chooser), FALSE);
+  g_return_val_if_fail (db_name != NULL, FALSE);
+
+  priv = chooser->priv;
+
+  data.db_name = g_strdup (db_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_db_name,
+                          &data);
+
+  retval = data.found;
+
+  if (data.found)
+    {
+      g_free (priv->current_db);
+      priv->current_db = data.db_name;
+    }
+  else
+    g_free (data.db_name);
+
+  return retval;
+}
+
+/**
+ * gdict_database_chooser_get_current_database:
+ * @chooser: a #GdictDatabaseChooser
+ *
+ * Retrieves the name of the currently selected database inside @chooser
+ *
+ * Return value: the name of the selected database. Use g_free() on the
+ *   returned string when done using it
+ *
+ * Since: 0.10
+ */
+gchar *
+gdict_database_chooser_get_current_database (GdictDatabaseChooser *chooser)
+{
+  GdictDatabaseChooserPrivate *priv;
+  GtkTreeSelection *selection;
+  GtkTreeModel *model;
+  GtkTreeIter iter;
+  gchar *retval = NULL;
+
+  g_return_val_if_fail (GDICT_IS_DATABASE_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, DB_COLUMN_NAME, &retval, -1);
+  
+  g_free (priv->current_db);
+  priv->current_db = g_strdup (retval);
+
+  return retval;
+}
+
+/**
+ * gdict_database_chooser_add_button:
+ * @chooser: a #GdictDatabase
+ * @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: 0.10
+ */
+GtkWidget *
+gdict_database_chooser_add_button (GdictDatabaseChooser *chooser,
+                                   const gchar          *button_text)
+{
+  GdictDatabaseChooserPrivate *priv;
+  GtkWidget *button;
+
+  g_return_val_if_fail (GDICT_IS_DATABASE_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;
+}