81 lines
2.5 KiB
C++
81 lines
2.5 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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* $LicenseInfo:firstyear=2009&license=viewerlgpl$
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* Second Life Viewer Source Code
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* Copyright (C) 2010, Linden Research, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License only.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
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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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LLDragAndDropButton(const 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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