+ g_signal_connect(G_OBJECT (self), "drag_data_get",
+ G_CALLBACK(drag_data_get_cb), NULL);
+}
+
+static GtkTreePath *
+get_selected_row (GtkTreeView *self, GtkTreeModel **model)
+{
+ GtkTreePath *path = NULL;
+ GtkTreeSelection *sel = NULL;
+ GList *rows = NULL;
+
+ sel = gtk_tree_view_get_selection(self);
+ rows = gtk_tree_selection_get_selected_rows (sel, model);
+
+ if ((rows == NULL) || (g_list_length(rows) != 1))
+ goto frees;
+
+ path = gtk_tree_path_copy(g_list_nth_data (rows, 0));
+
+
+ /* Free */
+ frees:
+ g_list_foreach(rows,(GFunc) gtk_tree_path_free, NULL);
+ g_list_free(rows);
+
+ return path;
+}
+
+/*
+ * This function moves the tree view scroll to the current selected
+ * row when the widget grabs the focus
+ */
+static gboolean
+on_focus_in (GtkWidget *self,
+ GdkEventFocus *event,
+ gpointer user_data)
+{
+ GtkTreeSelection *selection;
+ GtkTreeModel *model;
+ GList *selected = NULL;
+ GtkTreePath *selected_path = NULL;
+
+ model = gtk_tree_view_get_model (GTK_TREE_VIEW (self));
+ if (!model)
+ return FALSE;
+
+ selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (self));
+ /* If none selected yet, pick the first one */
+ if (gtk_tree_selection_count_selected_rows (selection) == 0) {
+ GtkTreeIter iter;
+ GtkTreePath *path;
+
+ /* Return if the model is empty */
+ if (!gtk_tree_model_get_iter_first (model, &iter))
+ return FALSE;
+
+ path = gtk_tree_model_get_path (model, &iter);
+ gtk_tree_selection_select_path (selection, path);
+ gtk_tree_path_free (path);
+ }
+
+ /* Need to get the all the rows because is selection multiple */
+ selected = gtk_tree_selection_get_selected_rows (selection, &model);
+ if (selected == NULL) return FALSE;
+ selected_path = (GtkTreePath *) selected->data;
+
+ /* Check if we need to scroll */
+ #if GTK_CHECK_VERSION(2, 8, 0) /* TODO: gtk_tree_view_get_visible_range() is only available in GTK+ 2.8 */
+ GtkTreePath *start_path = NULL;
+ GtkTreePath *end_path = NULL;
+ if (gtk_tree_view_get_visible_range (GTK_TREE_VIEW (self),
+ &start_path,
+ &end_path)) {
+
+ if ((gtk_tree_path_compare (start_path, selected_path) != -1) ||
+ (gtk_tree_path_compare (end_path, selected_path) != 1)) {
+
+ /* Scroll to first path */
+ gtk_tree_view_scroll_to_cell (GTK_TREE_VIEW (self),
+ selected_path,
+ NULL,
+ TRUE,
+ 0.5,
+ 0.0);
+ }
+ }
+ #endif /* GTK_CHECK_VERSION */
+
+ /* Frees */
+ g_list_foreach (selected, (GFunc) gtk_tree_path_free, NULL);
+ g_list_free (selected);
+
+ return FALSE;
+}
+
+static void
+idle_notify_headers_count_changed_destroy (gpointer data)
+{
+ gdk_threads_enter ();
+
+ HeadersCountChangedHelper *helper = NULL;
+
+ g_return_if_fail (data != NULL);
+ helper = (HeadersCountChangedHelper *) data;
+
+ g_object_unref (helper->change);
+ g_slice_free (HeadersCountChangedHelper, helper);
+
+ gdk_threads_leave ();
+}
+
+static gboolean
+idle_notify_headers_count_changed (gpointer data)
+{
+ gdk_threads_enter ();
+
+ TnyFolder *folder = NULL;
+ ModestHeaderViewPrivate *priv = NULL;
+ HeadersCountChangedHelper *helper = NULL;
+
+ g_return_val_if_fail (data != NULL, FALSE);
+ helper = (HeadersCountChangedHelper *) data;
+ g_return_val_if_fail (MODEST_IS_HEADER_VIEW(helper->self), FALSE);
+ g_return_val_if_fail (TNY_FOLDER_CHANGE(helper->change), FALSE);
+
+ folder = tny_folder_change_get_folder (helper->change);
+
+ priv = MODEST_HEADER_VIEW_GET_PRIVATE (helper->self);
+ g_mutex_lock (priv->observers_lock);
+
+ /* Emmit signal to evaluate how headers changes affects to the window view */
+ g_signal_emit (G_OBJECT(helper->self), signals[MSG_COUNT_CHANGED_SIGNAL], 0, folder, helper->change);
+
+ /* Added or removed headers, so data stored on cliboard are invalid */
+ if (modest_email_clipboard_check_source_folder (priv->clipboard, folder))
+ modest_email_clipboard_clear (priv->clipboard);
+
+ g_mutex_unlock (priv->observers_lock);
+
+ gdk_threads_leave ();
+
+ return FALSE;
+}
+
+static void
+folder_monitor_update (TnyFolderObserver *self,
+ TnyFolderChange *change)
+{
+ ModestHeaderViewPrivate *priv;
+ TnyFolderChangeChanged changed;
+ HeadersCountChangedHelper *helper = NULL;
+
+ changed = tny_folder_change_get_changed (change);
+
+ /* Do not notify the observers if the folder of the header
+ view has changed before this call to the observer
+ happens */
+ priv = MODEST_HEADER_VIEW_GET_PRIVATE (MODEST_HEADER_VIEW (self));
+ if (tny_folder_change_get_folder (change) != priv->folder)
+ return;
+
+ /* Check folder count */
+ if ((changed & TNY_FOLDER_CHANGE_CHANGED_ADDED_HEADERS) ||
+ (changed & TNY_FOLDER_CHANGE_CHANGED_REMOVED_HEADERS)) {
+ helper = g_slice_new0 (HeadersCountChangedHelper);
+ helper->self = MODEST_HEADER_VIEW(self);
+ helper->change = g_object_ref(change);
+
+ g_idle_add_full (G_PRIORITY_DEFAULT,
+ idle_notify_headers_count_changed,
+ helper,
+ idle_notify_headers_count_changed_destroy);
+ }
+}
+
+void
+modest_header_view_clear (ModestHeaderView *self)
+{
+ modest_header_view_set_folder (self, NULL, NULL, NULL);
+}
+
+void
+modest_header_view_copy_selection (ModestHeaderView *header_view)
+{
+ /* Copy selection */
+ _clipboard_set_selected_data (header_view, FALSE);
+}
+
+void
+modest_header_view_cut_selection (ModestHeaderView *header_view)
+{
+ ModestHeaderViewPrivate *priv = NULL;
+ GtkTreeModel *model = NULL;
+ const gchar **hidding = NULL;
+ guint i, n_selected;
+
+ g_return_if_fail (MODEST_IS_HEADER_VIEW (header_view));
+ priv = MODEST_HEADER_VIEW_GET_PRIVATE (header_view);
+
+ /* Copy selection */
+ _clipboard_set_selected_data (header_view, TRUE);
+
+ /* Get hidding ids */
+ hidding = modest_email_clipboard_get_hidding_ids (priv->clipboard, &n_selected);
+
+ /* Clear hidding array created by previous cut operation */
+ _clear_hidding_filter (MODEST_HEADER_VIEW (header_view));
+
+ /* Copy hidding array */
+ priv->n_selected = n_selected;
+ priv->hidding_ids = g_malloc0(sizeof(gchar *) * n_selected);
+ for (i=0; i < n_selected; i++)
+ priv->hidding_ids[i] = g_strdup(hidding[i]);
+
+ /* Hide cut headers */
+ model = gtk_tree_view_get_model (GTK_TREE_VIEW (header_view));
+ if (GTK_IS_TREE_MODEL_FILTER (model))
+ gtk_tree_model_filter_refilter (GTK_TREE_MODEL_FILTER (model));
+}
+
+
+
+
+static void
+_clipboard_set_selected_data (ModestHeaderView *header_view,
+ gboolean delete)
+{
+ ModestHeaderViewPrivate *priv = NULL;
+ TnyList *headers = NULL;
+
+ g_return_if_fail (MODEST_IS_HEADER_VIEW (header_view));
+ priv = MODEST_HEADER_VIEW_GET_PRIVATE (header_view);
+
+ /* Set selected data on clipboard */
+ g_return_if_fail (MODEST_IS_EMAIL_CLIPBOARD (priv->clipboard));
+ headers = modest_header_view_get_selected_headers (header_view);
+ modest_email_clipboard_set_data (priv->clipboard, priv->folder, headers, delete);
+
+ /* Free */
+ g_object_unref (headers);
+}
+
+
+
+static gboolean
+filter_row (GtkTreeModel *model,
+ GtkTreeIter *iter,
+ gpointer user_data)
+{
+ ModestHeaderViewPrivate *priv = NULL;
+ TnyHeader *header = NULL;
+ guint i;
+ gchar *id = NULL;
+ gboolean found = FALSE;
+
+ g_return_val_if_fail (MODEST_IS_HEADER_VIEW (user_data), FALSE);
+ priv = MODEST_HEADER_VIEW_GET_PRIVATE (user_data);
+
+ /* If no data on clipboard, return always TRUE */
+ if (modest_email_clipboard_cleared(priv->clipboard)) return TRUE;
+
+ /* Get header from model */
+ gtk_tree_model_get (model, iter,
+ TNY_GTK_HEADER_LIST_MODEL_INSTANCE_COLUMN, &header,
+ -1);
+
+ /* Get message id from header (ensure is a valid id) */
+ if (!header) return FALSE;
+ id = g_strdup(tny_header_get_message_id (header));
+
+ /* Check hiding */
+ if (priv->hidding_ids != NULL)
+ for (i=0; i < priv->n_selected && !found; i++)
+ if (priv->hidding_ids[i] != NULL && id != NULL)
+ found = (!strcmp (priv->hidding_ids[i], id));
+
+ /* Free */
+ g_object_unref (header);
+ g_free(id);
+
+ return !found;
+}
+
+static void
+_clear_hidding_filter (ModestHeaderView *header_view)
+{
+ ModestHeaderViewPrivate *priv;
+ guint i;
+
+ g_return_if_fail (MODEST_IS_HEADER_VIEW (header_view));
+ priv = MODEST_HEADER_VIEW_GET_PRIVATE(header_view);
+
+ if (priv->hidding_ids != NULL) {
+ for (i=0; i < priv->n_selected; i++)
+ g_free (priv->hidding_ids[i]);
+ g_free(priv->hidding_ids);
+ }