[gnome-builder/document-manager] GbDocumentStack: emit view-closed signal when a view is closed

[Christian Hergert <chergert src gnome org>]

commit 6f552252e52e919a9a2ddb9f42ab1639ca11e86d
Author: Christian Hergert <christian hergert me>
Date:   Mon Dec 8 14:52:07 2014 -0800

    GbDocumentStack: emit view-closed signal when a view is closed

 src/documents/gb-document-stack.c |   19 +++++++++++++++++++
 src/documents/gb-document-stack.h |    2 ++
 2 files changed, 21 insertions(+), 0 deletions(-)
---
diff --git a/src/documents/gb-document-stack.c b/src/documents/gb-document-stack.c
index d4e4e22..b0503de 100644
--- a/src/documents/gb-document-stack.c
+++ b/src/documents/gb-document-stack.c
@@ -53,6 +53,7 @@ enum {
   CREATE_VIEW,
   EMPTY,
   FOCUS_NEIGHBOR,
+  VIEW_CLOSED,
   LAST_SIGNAL
 };
 
@@ -81,6 +82,8 @@ gb_document_stack_remove_view (GbDocumentStack *stack,
   if (view == stack->priv->active_view)
     gb_clear_weak_pointer (&stack->priv->active_view);
 
+  g_object_ref (view);
+
   /* Notify the document view it is being closed */
   gb_document_view_close (view);
 
@@ -90,6 +93,11 @@ gb_document_stack_remove_view (GbDocumentStack *stack,
     gtk_container_remove (GTK_CONTAINER (stack->priv->controls), controls);
   gtk_container_remove (GTK_CONTAINER (stack->priv->stack), GTK_WIDGET (view));
 
+  /* Notify document grid of view closure */
+  g_signal_emit (stack, gSignals [VIEW_CLOSED], 0, view);
+
+  g_object_unref (view);
+
   /*
    * Set the visible child to the first document view. We probably want to
    * be more intelligent about this in the future. visible_child may be
@@ -688,6 +696,17 @@ gb_document_stack_class_init (GbDocumentStackClass *klass)
                   1,
                   GTK_TYPE_TEXT_DIRECTION);
 
+  gSignals [VIEW_CLOSED] =
+    g_signal_new ("view-closed",
+                  GB_TYPE_DOCUMENT_STACK,
+                  G_SIGNAL_RUN_LAST,
+                  G_STRUCT_OFFSET (GbDocumentStackClass, view_closed),
+                  NULL, NULL,
+                  g_cclosure_marshal_generic,
+                  G_TYPE_NONE,
+                  1,
+                  GB_TYPE_DOCUMENT_VIEW);
+
   g_type_ensure (GB_TYPE_DOCUMENT_MENU_BUTTON);
 }
 
diff --git a/src/documents/gb-document-stack.h b/src/documents/gb-document-stack.h
index 420557f..bbfed8c 100644
--- a/src/documents/gb-document-stack.h
+++ b/src/documents/gb-document-stack.h
@@ -55,6 +55,8 @@ struct _GbDocumentStackClass
                        GbDocument      *document,
                        GbDocumentSplit  split);
   void (*empty)       (GbDocumentStack *stack);
+  void (*view_closed) (GbDocumentStack *stack,
+                       GbDocumentView  *view);
 };
 
 GType              gb_document_stack_get_type             (void);