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GtkTreeView: Avoid a crash with empty trees

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The gesture code was assuming that the rb tree exists, which
will not be the case if the treeview is empty.

https://bugzilla.gnome.org/show_bug.cgi?id=735300
This commit is contained in:
Matthias Clasen 2014-08-26 00:05:14 -04:00
parent 318555ca26
commit d5876e99f5
1 changed files with 6 additions and 0 deletions
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6
gtk/gtktreeview.c
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@ -3320,6 +3320,12 @@ gtk_tree_view_drag_gesture_begin (GtkGestureDrag *gesture,
GtkRBTree *tree;
GtkRBNode *node;
if (tree_view->priv->tree == NULL)
{
gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_DENIED);
return;
}
gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, start_x, start_y,
&bin_x, &bin_y);
tree_view->priv->press_start_x = tree_view->priv->rubber_band_x = bin_x;