From 3b9223944a0eedec8ba0a8a19d4f0bf756727401 Mon Sep 17 00:00:00 2001
From: "mkaply%us.ibm.com" <mkaply%us.ibm.com>
Date: Tue, 21 Oct 2003 22:21:33 +0000
Subject: [PATCH] #221651 - r=mkaply - new OS/2 drag drop code

---
 widget/public/nsIDragSessionOS2.h | 99 +++++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100755 widget/public/nsIDragSessionOS2.h

diff --git a/widget/public/nsIDragSessionOS2.h b/widget/public/nsIDragSessionOS2.h
new file mode 100755
index 000000000000..692dfa0e6cc4
--- /dev/null
+++ b/widget/public/nsIDragSessionOS2.h
@@ -0,0 +1,99 @@
+/* ***** 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 the Mozilla OS/2 libraries.
+ *
+ * The Initial Developer of the Original Code is 
+ * Richard L. Walsh <dragtext@e-vertise.com>
+ * Portions created by the Initial Developer are Copyright (C) 2003
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or 
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+/**
+ * nsIDragSessionOS2 encapsulates support for OS/2 dragover/drop events,
+ * i.e. operations where Mozilla is the target of a drag (nsIDragService
+ * handles source operations).  Its public methods correspond to the d&d
+ * messages a PM window receives.  Its protected methods recast native
+ * data as nsITransferable flavors during drag-enter and drop events.
+ *
+ * nsIDragSessionOS2 supports these native formats:  WPS Url objects,
+ * files, the contents of files (Alt-drop), and text from DragText.
+ * Data is presented to Mozilla as URI-text, HTML, and/or plain-text.
+ * Only single-item native drops are supported.  If the dropped file
+ * or text does not exist yet, nsIDragSessionOS2 will have the source
+ * render the data asynchronously.
+ */
+
+#ifndef nsIDragSessionOS2_h__
+#define nsIDragSessionOS2_h__
+
+#include "nsISupports.h"
+
+#define INCL_PM
+#include <os2.h>
+
+#define NS_IDRAGSESSIONOS2_IID_STR "bc4258b8-33ce-4624-adcb-4b62bb5164c0"
+#define NS_IDRAGSESSIONOS2_IID \
+  { 0xbc4258b8, 0x33ce, 0x4624, { 0xad, 0xcb, 0x4b, 0x62, 0xbb, 0x51, 0x64, 0xc0 } };
+
+class nsIDragSessionOS2 : public nsISupports
+{
+public:
+  NS_DEFINE_STATIC_IID_ACCESSOR(NS_IDRAGSESSIONOS2_IID)
+
+  /** the dragFlags returned by most public methods fall into two groups */
+
+  /** Mozilla's dragover status */
+  enum { DND_NONE       = 0 };                                     
+  enum { DND_NATIVEDRAG = 1 };                                     
+  enum { DND_MOZDRAG    = 2 };                                     
+  enum { DND_INDROP     = 4 };                                     
+  enum { DND_DRAGSTATUS = DND_NATIVEDRAG | DND_MOZDRAG | DND_INDROP };
+
+  /** tasks the caller should perform */
+  enum { DND_DISPATCHENTEREVENT = 16 };
+  enum { DND_DISPATCHEVENT      = 32 };
+  enum { DND_GETDRAGOVERRESULT  = 64 };
+  enum { DND_EXITSESSION        = 128 };
+
+  NS_IMETHOD DragOverMsg(PDRAGINFO pdinfo, MRESULT &mr, PRUint32* dragFlags) = 0;
+  NS_IMETHOD GetDragoverResult(MRESULT& mr) = 0;
+  NS_IMETHOD DragLeaveMsg(PDRAGINFO pdinfo, PRUint32* dragFlags) = 0;
+  NS_IMETHOD DropHelpMsg(PDRAGINFO pdinfo, PRUint32* dragFlags) = 0;
+  NS_IMETHOD ExitSession(PRUint32* dragFlags) = 0;
+  NS_IMETHOD DropMsg(PDRAGINFO pdinfo, HWND hwnd, PRUint32* dragFlags) = 0;
+  NS_IMETHOD RenderCompleteMsg(PDRAGTRANSFER pdxfer, USHORT usResult, PRUint32* dragFlags) = 0;
+
+protected:
+  NS_IMETHOD NativeDragEnter(PDRAGINFO pdinfo) = 0;
+  NS_IMETHOD NativeDrop(PDRAGINFO pdinfo, HWND hwnd, PRBool* rendering) = 0;
+  NS_IMETHOD NativeRenderComplete(PDRAGTRANSFER pdxfer, USHORT usResult) = 0;
+  NS_IMETHOD NativeDataToTransferable( PCSZ pszText, PCSZ pszTitle, PRBool isUrl) = 0;
+};
+
+#endif  // nsIDragSessionOS2_h__