Woops, forgot to add these files. Not part of the default build.

widget/src/gtk2/nsDragService.h

@@ -0,0 +1,129 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* vim:expandtab:shiftwidth=4:tabstop=4:
+ */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public
+ * License Version 1.1 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ *
+ * The Original Code is mozilla.org code.
+ *
+ * The Initial Developer of the Original Code is Christopher Blizzard
+ * <blizzard@mozilla.org>.  Portions created by Christopher Blizzard
+ * are Copyright (C) 1998 Christopher Blizzard. All Rights Reserved.
+ *
+ * Contributor(s):
+ * Christopher Blizzard <blizzard@mozilla.org>
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#ifndef nsDragService_h__
+#define nsDragService_h__
+
+#include "nsBaseDragService.h"
+#include "nsIDragSessionGTK.h"
+#include <gtk/gtk.h>
+
+
+/**
+ * Native GTK DragService wrapper
+ */
+
+class nsDragService : public nsBaseDragService, public nsIDragSessionGTK {
+public:
+    nsDragService();
+    virtual ~nsDragService();
+
+    NS_DECL_ISUPPORTS_INHERITED
+
+    // nsIDragService
+    NS_IMETHOD InvokeDragSession (nsIDOMNode *aDOMNode,
+                                  nsISupportsArray * anArrayTransferables,
+                                  nsIScriptableRegion * aRegion,
+                                  PRUint32 aActionType);
+    NS_IMETHOD StartDragSession();
+    NS_IMETHOD EndDragSession();
+
+    // nsIDragSession
+    NS_IMETHOD SetCanDrop            (PRBool           aCanDrop);
+    NS_IMETHOD GetCanDrop            (PRBool          *aCanDrop);
+    NS_IMETHOD GetNumDropItems       (PRUint32 * aNumItems);
+    NS_IMETHOD GetData               (nsITransferable * aTransferable,
+                                      PRUint32 aItemIndex);
+    NS_IMETHOD IsDataFlavorSupported (const char *aDataFlavor, PRBool *_retval);
+
+    // nsIDragSessionGTK
+
+    NS_IMETHOD TargetSetLastContext  (GtkWidget      *aWidget,
+                                      GdkDragContext *aContext,
+                                      guint           aTime);
+    NS_IMETHOD TargetStartDragMotion (void);
+    NS_IMETHOD TargetEndDragMotion   (GtkWidget      *aWidget,
+                                      GdkDragContext *aContext,
+                                      guint           aTime);
+    NS_IMETHOD TargetDataReceived    (GtkWidget         *aWidget,
+                                      GdkDragContext    *aContext,
+                                      gint               aX,
+                                      gint               aY,
+                                      GtkSelectionData  *aSelection_data,
+                                      guint              aInfo,
+                                      guint32            aTime);
+
+    NS_IMETHOD TargetSetTimeCallback (nsIDragSessionGTKTimeCB aCallback);
+
+    // This is called when the drag started with the invisible widget
+    // finishes.  It's called from within the drag service code but from
+    // a callback - it needs to be public.
+    void           SourceEndDrag(void);
+    void           SourceDataGet(GtkWidget        *widget,
+                                 GdkDragContext   *context,
+                                 GtkSelectionData *selection_data,
+                                 guint             info,
+                                 guint32           aTime);
+
+    //  END PUBLIC API
+
+private:
+
+    // target side vars
+
+    // the last widget that was the target of a drag
+    GtkWidget      *mTargetWidget;
+    GdkDragContext *mTargetDragContext;
+    guint           mTargetTime;
+    // is it OK to drop on us?
+    PRBool          mCanDrop;
+    // have we received our drag data?
+    PRBool          mTargetDragDataReceived;
+    // last data received and its length
+    void           *mTargetDragData;
+    PRUint32        mTargetDragDataLen;
+    // is the current target drag context contain a list?
+    PRBool         IsTargetContextList(void);
+    // this will get the native data from the last target given a
+    // specific flavor
+    void           GetTargetDragData(GdkAtom aFlavor);
+    // this will reset all of the target vars
+    void           TargetResetData(void);
+
+    // source side vars
+
+    // the source of our drags
+    GtkWidget     *mHiddenWidget;
+    // our source data items
+    nsCOMPtr<nsISupportsArray> mSourceDataItems;
+    // get a list of the sources in gtk's format
+    GtkTargetList *GetSourceList(void);
+
+};
+
+#endif // nsDragService_h__
+