pjs/widget/public/nsIDragSessionOS2.h

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/* ***** 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 } }
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class nsIDragSessionOS2 : public nsISupports
{
public:
NS_DECLARE_STATIC_IID_ACCESSOR(NS_IDRAGSESSIONOS2_IID)
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/** 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;
};
NS_DEFINE_STATIC_IID_ACCESSOR(nsIDragSessionOS2, NS_IDRAGSESSIONOS2_IID)
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#endif // nsIDragSessionOS2_h__