Inital checkin

widget/src/xpwidgets/nsBaseDragService.cpp

@@ -0,0 +1,119 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * The contents of this file are subject to the Netscape Public License
+ * Version 1.0 (the "NPL"); you may not use this file except in
+ * compliance with the NPL.  You may obtain a copy of the NPL at
+ * http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the NPL is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+ * for the specific language governing rights and limitations under the
+ * NPL.
+ *
+ * The Initial Developer of this code under the NPL is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
+ * Reserved.
+ */
+
+#include "nsBaseDragService.h"
+#include "nsITransferable.h"
+#include "nsDataObj.h"
+
+#include "nsIServiceManager.h"
+#include "nsWidgetsCID.h"
+#include "nsITransferable.h"
+#include "nsSize.h"
+
+
+static NS_DEFINE_IID(kIDragServiceIID,   NS_IDRAGSERVICE_IID);
+
+NS_IMPL_ADDREF(nsBaseDragService)
+NS_IMPL_RELEASE(nsBaseDragService)
+
+//-------------------------------------------------------------------------
+//
+// DragService constructor
+//
+//-------------------------------------------------------------------------
+nsBaseDragService::nsBaseDragService() :
+  mTargetSize(0,0)
+{
+  NS_INIT_REFCNT();
+  mCanDrop       = PR_FALSE;
+}
+
+//-------------------------------------------------------------------------
+//
+// DragService destructor
+//
+//-------------------------------------------------------------------------
+nsBaseDragService::~nsBaseDragService()
+{
+}
+
+/**
+ * @param aIID The name of the class implementing the method
+ * @param _classiiddef The name of the #define symbol that defines the IID
+ * for the class (e.g. NS_ISUPPORTS_IID)
+ * 
+*/ 
+nsresult nsBaseDragService::QueryInterface(const nsIID& aIID, void** aInstancePtr)
+{
+
+  if (NULL == aInstancePtr) {
+    return NS_ERROR_NULL_POINTER;
+  }
+
+  nsresult rv = NS_NOINTERFACE;
+
+  if (aIID.Equals(kIDragServiceIID)) {
+    *aInstancePtr = (void*) ((nsIDragService*)this);
+    NS_ADDREF_THIS();
+    return NS_OK;
+  }
+
+  return rv;
+}
+
+//---------------------------------------------------------
+NS_IMETHODIMP nsBaseDragService::SetCanDrop (PRBool aCanDrop) 
+{
+ mCanDrop = aCanDrop;
+ return NS_OK;
+}
+
+//---------------------------------------------------------
+NS_IMETHODIMP nsBaseDragService::GetCanDrop (PRBool * aCanDrop)
+{
+  *aCanDrop = mCanDrop;
+  return NS_OK;
+}
+
+//---------------------------------------------------------
+NS_IMETHODIMP nsBaseDragService::SetTargetSize (nsSize aDragTargetSize) 
+{
+ mTargetSize = aDragTargetSize;
+ return NS_OK;
+}
+
+//---------------------------------------------------------
+NS_IMETHODIMP nsBaseDragService::GetTargetSize (nsSize * aDragTargetSize)
+{
+  *aDragTargetSize = mTargetSize;
+  return NS_OK;
+}
+
+
+//-------------------------------------------------------------------------
+NS_IMETHODIMP nsBaseDragService::StartDragSession (nsITransferable * aTransferable, PRUint32 aActionType)
+
+{
+  return NS_ERROR_FAILURE;
+}
+
+//-------------------------------------------------------------------------
+NS_IMETHODIMP nsBaseDragService::GetData (nsITransferable * aTransferable)
+{
+  return NS_ERROR_FAILURE;
+}