[gtranslator] Notify the window when the selection of the active view changes

[Carlos Garcia Campos <carlosgc src gnome org>]

commit 43a13ae2a7ceb40af718dad85c328dc382423460
Author: Carlos Garcia Campos <carlosgc gnome org>
Date:   Sun Apr 22 12:26:42 2012 +0200

    Notify the window when the selection of the active view changes
    
    https://bugzilla.gnome.org/show_bug.cgi?id=569650

 src/gtr-tab.c    |   17 +++++++++++++++++
 src/gtr-tab.h    |    1 +
 src/gtr-window.c |    8 ++++++++
 3 files changed, 26 insertions(+), 0 deletions(-)
---
diff --git a/src/gtr-tab.c b/src/gtr-tab.c
index 313992e..b8d55fc 100644
--- a/src/gtr-tab.c
+++ b/src/gtr-tab.c
@@ -125,6 +125,7 @@ enum
   SHOWED_MESSAGE,
   MESSAGE_CHANGED,
   MESSAGE_EDITION_FINISHED,
+  SELECTION_CHANGED,
   LAST_SIGNAL
 };
 
@@ -543,6 +544,12 @@ emit_message_changed_signal (GtkTextBuffer * buf, GtrTab * tab)
 }
 
 static void
+emit_selection_changed (GtkTextBuffer * buf, GParamSpec * spec, GtrTab * tab)
+{
+  g_signal_emit (G_OBJECT (tab), signals[SELECTION_CHANGED], 0);
+}
+
+static void
 update_status (GtrTab * tab, GtrMsg * msg, gpointer useless)
 {
   GtrMsgStatus status;
@@ -627,6 +634,8 @@ gtr_tab_add_msgstr_tabs (GtrTab * tab)
 
       g_signal_connect_after (buf, "end_user_action",
                               G_CALLBACK (emit_message_changed_signal), tab);
+      g_signal_connect (buf, "notify::has-selection",
+                        G_CALLBACK (emit_selection_changed), tab);
       i++;
       g_free (label);
     }
@@ -1012,6 +1021,14 @@ gtr_tab_class_init (GtrTabClass * klass)
                   NULL, NULL,
                   g_cclosure_marshal_VOID__OBJECT,
                   G_TYPE_NONE, 1, GTR_TYPE_MSG);
+  signals[SELECTION_CHANGED] =
+    g_signal_new ("selection-changed",
+                  G_OBJECT_CLASS_TYPE (klass),
+                  G_SIGNAL_RUN_LAST,
+                  G_STRUCT_OFFSET (GtrTabClass, selection_changed),
+                  NULL, NULL,
+                  g_cclosure_marshal_VOID__VOID,
+                  G_TYPE_NONE, 0);
 
   /* Properties */
   g_object_class_install_property (object_class,
diff --git a/src/gtr-tab.h b/src/gtr-tab.h
index 9db9f41..16a61d0 100644
--- a/src/gtr-tab.h
+++ b/src/gtr-tab.h
@@ -70,6 +70,7 @@ struct _GtrTabClass
   void (*showed_message) (GtrTab * tab, GtrMsg * msg);
   void (*message_changed) (GtrTab * tab, GtrMsg * msg);
   void (*message_edition_finished) (GtrTab * tab, GtrMsg * msg);
+  void (*selection_changed) (GtrTab * tab);
 };
 
 typedef enum
diff --git a/src/gtr-window.c b/src/gtr-window.c
index 017a2be..754c534 100644
--- a/src/gtr-window.c
+++ b/src/gtr-window.c
@@ -901,6 +901,12 @@ showed_message_cb (GtrTab * tab, GtrMsg * msg, GtrWindow * window)
 }
 
 static void
+selection_changed_cb (GtrTab * tab, GtrWindow * window)
+{
+  set_sensitive_according_to_tab (window, tab);
+}
+
+static void
 notebook_tab_added (GtkNotebook * notebook,
                     GtkWidget * child, guint page_num, GtrWindow * window)
 {
@@ -948,6 +954,8 @@ notebook_tab_added (GtkNotebook * notebook,
                           window);
   g_signal_connect_after (child, "showed_message",
                           G_CALLBACK (showed_message_cb), window);
+  g_signal_connect (child, "selection-changed",
+                    G_CALLBACK (selection_changed_cb), window);
 
   g_signal_connect (gtr_tab_get_po (tab),
                     "notify::state", G_CALLBACK (sync_state), window);