[gtk+] Add a missing accessor for GdkDragContext->source_window.

[Cosimo Cecchi <cosimoc src gnome org>]

commit 4467145e437074d0a9a233ffa80befb309df754a
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Thu Jun 10 15:52:45 2010 +0200

    Add a missing accessor for GdkDragContext->source_window.

 docs/reference/gdk/gdk3-sections.txt |    1 +
 gdk/gdk.symbols                      |    1 +
 gdk/gdkdnd.c                         |   18 ++++++++++++++++++
 gdk/gdkdnd.h                         |    2 ++
 4 files changed, 22 insertions(+), 0 deletions(-)
---
diff --git a/docs/reference/gdk/gdk3-sections.txt b/docs/reference/gdk/gdk3-sections.txt
index da9208c..1d4baf2 100644
--- a/docs/reference/gdk/gdk3-sections.txt
+++ b/docs/reference/gdk/gdk3-sections.txt
@@ -1273,6 +1273,7 @@ gdk_drag_context_new
 gdk_drag_drop
 gdk_drag_find_window
 gdk_drag_find_window_for_screen
+gdk_drag_context_get_source_window
 gdk_drag_begin
 gdk_drag_motion
 gdk_drop_finish
diff --git a/gdk/gdk.symbols b/gdk/gdk.symbols
index 3567606..7b25c6e 100644
--- a/gdk/gdk.symbols
+++ b/gdk/gdk.symbols
@@ -590,6 +590,7 @@ gdk_drag_context_get_actions
 gdk_drag_context_get_selected_action
 gdk_drag_context_get_suggested_action
 gdk_drag_context_list_targets
+gdk_drag_context_get_source_window
 gdk_drag_find_window
 gdk_drag_get_protocol
 #endif
diff --git a/gdk/gdkdnd.c b/gdk/gdkdnd.c
index fb43b1f..31aa250 100644
--- a/gdk/gdkdnd.c
+++ b/gdk/gdkdnd.c
@@ -166,5 +166,23 @@ gdk_drag_context_get_selected_action (GdkDragContext *context)
   return context->action;
 }
 
+/**
+ * gdk_drag_context_get_source_window:
+ * @context: a #GdkDragContext
+ *
+ * Returns the #GdkWindow where the DND operation started.
+ *
+ * Return value: (transfer none): a #GdkWindow
+ *
+ * Since: 2.22
+ **/
+GdkWindow *
+gdk_drag_context_get_source_window (GdkDragContext *context)
+{
+  g_return_val_if_fail (GDK_IS_DRAG_CONTEXT (context), NULL);
+
+  return context->source_window;
+}
+
 #define __GDK_DND_C__
 #include "gdkaliasdef.c"
diff --git a/gdk/gdkdnd.h b/gdk/gdkdnd.h
index 2bdf589..b257d1e 100644
--- a/gdk/gdkdnd.h
+++ b/gdk/gdkdnd.h
@@ -145,6 +145,8 @@ GdkDragAction    gdk_drag_context_get_actions          (GdkDragContext *context)
 GdkDragAction    gdk_drag_context_get_suggested_action (GdkDragContext *context);
 GdkDragAction    gdk_drag_context_get_selected_action  (GdkDragContext *context);
 
+GdkWindow       *gdk_drag_context_get_source_window    (GdkDragContext *context);
+
 /* Destination side */
 
 void             gdk_drag_status        (GdkDragContext   *context,