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/**
* @file lldndbutton.h
* @brief Declaration of the drag-n-drop button.
*
* $LicenseInfo:firstyear=2009&license=viewergpl$
*
* Copyright (c) 2009, Linden Research, Inc.
*
* Second Life Viewer Source Code
* The source code in this file ("Source Code") is provided by Linden Lab
* to you under the terms of the GNU General Public License, version 2.0
* ("GPL"), unless you have obtained a separate licensing agreement
* ("Other License"), formally executed by you and Linden Lab. Terms of
* the GPL can be found in doc/GPL-license.txt in this distribution, or
* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
*
* There are special exceptions to the terms and conditions of the GPL as
* it is applied to this Source Code. View the full text of the exception
* in the file doc/FLOSS-exception.txt in this software distribution, or
* online at
* http://secondlifegrid.net/programs/open_source/licensing/flossexception
*
* By copying, modifying or distributing this software, you acknowledge
* that you have read and understood your obligations described above,
* and agree to abide by those obligations.
*
* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
* COMPLETENESS OR PERFORMANCE.
* $/LicenseInfo$
*/
#ifndef LL_LLDNDBUTTON_H
#define LL_LLDNDBUTTON_H
#include "llbutton.h"
/**
* Class representing a button which can handle Drag-And-Drop event.
*
* LLDragAndDropButton does not contain any logic to handle Drag-And-Drop itself.
* Instead it provides drag_drop_handler_t which can be set to the button.
* Then each Drag-And-Drop will be delegated to this handler without any pre/post processing.
*
* All xml parameters are the same as LLButton has.
*
* @see LLLandmarksPanel for example of usage of this class.
*/
class LLDragAndDropButton : public LLButton
{
public:
struct Params : public LLInitParam::Block<Params, LLButton::Params>
{
Params();
};
LLDragAndDropButton(Params& params);
typedef boost::function<bool (
S32 /*x*/, S32 /*y*/, MASK /*mask*/, BOOL /*drop*/,
EDragAndDropType /*cargo_type*/,
void* /*cargo_data*/,
EAcceptance* /*accept*/,
std::string& /*tooltip_msg*/)> drag_drop_handler_t;
/**
* Sets a handler which should process Drag-And-Drop.
*/
void setDragAndDropHandler(drag_drop_handler_t handler) { mDragDropHandler = handler; }
/**
* Process Drag-And-Drop by delegating the event to drag_drop_handler_t.
*
* @return BOOL - value returned by drag_drop_handler_t if it is set, FALSE otherwise.
*/
/*virtual*/ BOOL handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
EDragAndDropType cargo_type,
void* cargo_data,
EAcceptance* accept,
std::string& tooltip_msg);
private:
drag_drop_handler_t mDragDropHandler;
};
#endif // LL_LLDNDBUTTON_H
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