[glade] GladeWidget/GladeWidgetAdaptor: Added glade_widget_adaptor_write_widget_after()

[Tristan Van Berkom <tvb src gnome org>]

commit f9194a7242918440082e6f3111fa8067aac0ed72
Author: Tristan Van Berkom <tristan van berkom gmail com>
Date:   Sat Apr 13 20:30:37 2013 +0900

    GladeWidget/GladeWidgetAdaptor: Added glade_widget_adaptor_write_widget_after()
    
    This gives a chance to write content of a widget after children are written.

 gladeui/glade-widget-adaptor.c | 39 +++++++++++++++++++++++++++++++++++++++
 gladeui/glade-widget-adaptor.h | 10 +++++++---
 gladeui/glade-widget.c         |  3 +++
 gladeui/glade-xml-utils.h      |  1 +
 4 files changed, 50 insertions(+), 3 deletions(-)
---
diff --git a/gladeui/glade-widget-adaptor.c b/gladeui/glade-widget-adaptor.c
index 1443763..6fa6e43 100644
--- a/gladeui/glade-widget-adaptor.c
+++ b/gladeui/glade-widget-adaptor.c
@@ -1102,6 +1102,15 @@ glade_widget_adaptor_object_write_widget (GladeWidgetAdaptor *adaptor,
 }
 
 static void
+glade_widget_adaptor_object_write_widget_after (GladeWidgetAdaptor *adaptor,
+                                               GladeWidget *widget,
+                                               GladeXmlContext *context,
+                                               GladeXmlNode *node)
+{
+
+}
+
+static void
 glade_widget_adaptor_object_read_child (GladeWidgetAdaptor *adaptor,
                                         GladeWidget *widget,
                                         GladeXmlNode *node)
@@ -1396,6 +1405,7 @@ glade_widget_adaptor_class_init (GladeWidgetAdaptorClass *adaptor_class)
   adaptor_class->depends = glade_widget_adaptor_object_depends;
   adaptor_class->read_widget = glade_widget_adaptor_object_read_widget;
   adaptor_class->write_widget = glade_widget_adaptor_object_write_widget;
+  adaptor_class->write_widget_after = glade_widget_adaptor_object_write_widget_after;
   adaptor_class->read_child = glade_widget_adaptor_object_read_child;
   adaptor_class->write_child = glade_widget_adaptor_object_write_child;
   adaptor_class->create_eprop = glade_widget_adaptor_object_create_eprop;
@@ -1627,6 +1637,10 @@ gwa_extend_with_node_load_sym (GladeWidgetAdaptorClass *klass,
     klass->write_widget = symbol;
 
   if (glade_xml_load_sym_from_node (node, module,
+                                    GLADE_TAG_WRITE_WIDGET_AFTER_FUNCTION, &symbol))
+    klass->write_widget_after = symbol;
+
+  if (glade_xml_load_sym_from_node (node, module,
                                     GLADE_TAG_READ_CHILD_FUNCTION, &symbol))
     klass->read_child = symbol;
 
@@ -4212,6 +4226,31 @@ glade_widget_adaptor_write_widget (GladeWidgetAdaptor *adaptor,
 
 
 /**
+ * glade_widget_adaptor_write_widget_after:
+ * @adaptor: A #GladeWidgetAdaptor
+ * @widget: The #GladeWidget
+ * @context: The #GladeXmlContext
+ * @node: The #GladeXmlNode
+ *
+ * This function is called to write @widget to @node 
+ * when writing xml files (after writing children)
+ */
+void
+glade_widget_adaptor_write_widget_after (GladeWidgetAdaptor *adaptor,
+                                        GladeWidget *widget,
+                                        GladeXmlContext *context,
+                                        GladeXmlNode *node)
+{
+  g_return_if_fail (GLADE_IS_WIDGET_ADAPTOR (adaptor));
+  g_return_if_fail (GLADE_IS_WIDGET (widget));
+  g_return_if_fail (node != NULL);
+
+  GLADE_WIDGET_ADAPTOR_GET_CLASS (adaptor)->write_widget_after (adaptor, widget,
+                                                               context, node);
+}
+
+
+/**
  * glade_widget_adaptor_read_child:
  * @adaptor: A #GladeWidgetAdaptor
  * @widget: The #GladeWidget
diff --git a/gladeui/glade-widget-adaptor.h b/gladeui/glade-widget-adaptor.h
index 33a4866..8cb9c01 100644
--- a/gladeui/glade-widget-adaptor.h
+++ b/gladeui/glade-widget-adaptor.h
@@ -611,8 +611,6 @@ struct _GladeWidgetAdaptorClass
   GladeConstructObjectFunc   construct_object;  /* Object constructor
                                                 */
 
-  GladeDestroyObjectFunc     destroy_object; /* Object destructor */
-
   GladePostCreateFunc        deep_post_create;   /* Executed after widget creation: 
                                                  * plugins use this to setup various
                                                  * support codes (adaptors must always
@@ -682,6 +680,9 @@ struct _GladeWidgetAdaptorClass
   GladeCreateEPropFunc         create_eprop;      /* Creates a GladeEditorProperty */
   GladeStringFromValueFunc     string_from_value; /* Creates a string for a value */
   GladeCreateEditableFunc      create_editable;   /* Creates a page for the editor */
+
+  GladeDestroyObjectFunc       destroy_object;    /* Object destructor */
+  GladeWriteWidgetFunc         write_widget_after;/* Writes widget attributes to the xml (after children) */
     
   void   (* glade_reserved1)   (void);
   void   (* glade_reserved2)   (void);
@@ -689,7 +690,6 @@ struct _GladeWidgetAdaptorClass
   void   (* glade_reserved4)   (void);
   void   (* glade_reserved5)   (void);
   void   (* glade_reserved6)   (void);
-  void   (* glade_reserved7)   (void);
 };
 
 #define glade_widget_adaptor_create_widget(adaptor, query, ...) \
@@ -843,6 +843,10 @@ void                  glade_widget_adaptor_write_widget       (GladeWidgetAdapto
                                                               GladeWidget        *widget,
                                                               GladeXmlContext    *context,
                                                               GladeXmlNode       *node);
+void                  glade_widget_adaptor_write_widget_after (GladeWidgetAdaptor *adaptor,
+                                                              GladeWidget        *widget,
+                                                              GladeXmlContext    *context,
+                                                              GladeXmlNode       *node);
 void                  glade_widget_adaptor_read_child         (GladeWidgetAdaptor *adaptor,
                                                               GladeWidget        *widget,
                                                               GladeXmlNode       *node);
diff --git a/gladeui/glade-widget.c b/gladeui/glade-widget.c
index ea732b6..5206c73 100644
--- a/gladeui/glade-widget.c
+++ b/gladeui/glade-widget.c
@@ -4170,6 +4170,9 @@ glade_widget_write (GladeWidget * widget,
         }
       g_list_free (list);
     }
+
+  /* Write out trailing widget content (anything that goes after children) */
+  glade_widget_adaptor_write_widget_after (widget->priv->adaptor, widget, context, widget_node);
 }
 
 
diff --git a/gladeui/glade-xml-utils.h b/gladeui/glade-xml-utils.h
index 26031cf..c08f821 100644
--- a/gladeui/glade-xml-utils.h
+++ b/gladeui/glade-xml-utils.h
@@ -110,6 +110,7 @@ typedef struct _GladeProject        GladeProject;
 #define GLADE_TAG_DEPENDS_FUNCTION                "depends-function"
 #define GLADE_TAG_READ_WIDGET_FUNCTION            "read-widget-function"
 #define GLADE_TAG_WRITE_WIDGET_FUNCTION           "write-widget-function"
+#define GLADE_TAG_WRITE_WIDGET_AFTER_FUNCTION     "write-widget-after-function"
 #define GLADE_TAG_READ_CHILD_FUNCTION             "read-child-function"
 #define GLADE_TAG_WRITE_CHILD_FUNCTION            "write-child-function"
 #define GLADE_TAG_CREATE_EPROP_FUNCTION           "create-editor-property-function"