[gtk/label-copy-link-fix: 1/2] label: Be more selective when selecting on focus-in

[Matthias Clasen <matthiasc src gnome org>]

commit 64ed69c56fe79aae9940d909494c708e01b266c9
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Aug 1 22:01:52 2020 -0400

    label: Be more selective when selecting on focus-in
    
    We don't want to select on focus-in when the focus
    comes from a child. The case where this does harm
    is when you activate copy or paste actions from the
    context menu. We close the menu before triggering the
    action, and if that causes the text in the label to
    be selected, unexpected things happen, since the action
    applies to the current selection.
    
    This is the equivalent of cd9f5733b3e354301f2 for GtkLabel.

 gtk/gtklabel.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtklabel.c b/gtk/gtklabel.c
index 453f6023c7..c39699fed1 100644
--- a/gtk/gtklabel.c
+++ b/gtk/gtklabel.c
@@ -3710,10 +3710,13 @@ gtk_label_grab_focus (GtkWidget *widget)
 {
   GtkLabel *self = GTK_LABEL (widget);
   gboolean select_on_focus;
+  GtkWidget *prev_focus;
 
   if (self->select_info == NULL)
     return FALSE;
 
+  prev_focus = gtk_root_get_focus (gtk_widget_get_root (widget));
+
   if (!GTK_WIDGET_CLASS (gtk_label_parent_class)->grab_focus (widget))
     return FALSE;
 
@@ -3724,12 +3727,14 @@ gtk_label_grab_focus (GtkWidget *widget)
                     &select_on_focus,
                     NULL);
 
-      if (select_on_focus && !self->in_click)
+      if (select_on_focus && !self->in_click &&
+          !(prev_focus && gtk_widget_is_ancestor (prev_focus, widget)))
         gtk_label_select_region (self, 0, -1);
     }
   else
     {
-      if (self->select_info->links && !self->in_click)
+      if (self->select_info->links && !self->in_click &&
+          !(prev_focus && gtk_widget_is_ancestor (prev_focus, widget)))
         {
           guint i;