[gnome-shell] st-entry: Implement middle click paste

[Jasper St. Pierre <jstpierre src gnome org>]

commit eaf184b5852825d49c85c683bd7bde96df02baf2
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Wed Nov 9 11:40:13 2011 -0500

    st-entry: Implement middle click paste
    
    https://bugzilla.gnome.org/show_bug.cgi?id=645019

 src/st/st-entry.c |   35 +++++++++++++++++++++++++++++++++++
 1 files changed, 35 insertions(+), 0 deletions(-)
---
diff --git a/src/st/st-entry.c b/src/st/st-entry.c
index 000c8ac..4d0e024 100644
--- a/src/st/st-entry.c
+++ b/src/st/st-entry.c
@@ -542,6 +542,38 @@ st_entry_clipboard_callback (StClipboard *clipboard,
 }
 
 static gboolean
+clutter_text_button_press_event (ClutterActor       *actor,
+                                 ClutterButtonEvent *event,
+                                 gpointer            user_data)
+{
+  GtkSettings *settings = gtk_settings_get_default ();
+  gboolean primary_paste_enabled;
+
+  g_object_get (settings,
+                "gtk-enable-primary-paste", &primary_paste_enabled,
+                NULL);
+
+  if (primary_paste_enabled && event->button == 2)
+    {
+      StClipboard *clipboard;
+
+      clipboard = st_clipboard_get_default ();
+
+      /* By the time the clipboard callback is called,
+       * the rest of the signal handlers will have
+       * run, making the text cursor to be in the correct
+       * place.
+       */
+      st_clipboard_get_text (clipboard,
+                             ST_CLIPBOARD_TYPE_PRIMARY,
+                             st_entry_clipboard_callback,
+                             user_data);
+    }
+
+  return FALSE;
+}
+
+static gboolean
 st_entry_key_press_event (ClutterActor    *actor,
                           ClutterKeyEvent *event)
 {
@@ -755,6 +787,9 @@ st_entry_init (StEntry *entry)
   g_signal_connect (priv->entry, "notify::password-char",
                     G_CALLBACK (clutter_text_password_char_cb), entry);
 
+  g_signal_connect (priv->entry, "button-press-event",
+                    G_CALLBACK (clutter_text_button_press_event), entry);
+
   priv->spacing = 6.0f;
 
   clutter_actor_add_child (CLUTTER_ACTOR (entry), priv->entry);