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