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/**
* @file llradiogroup.h
* @brief LLRadioGroup base class
*
* $LicenseInfo:firstyear=2001&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#ifndef LL_LLRADIOGROUP_H
#define LL_LLRADIOGROUP_H
#include "lluictrl.h"
#include "llcheckboxctrl.h"
#include "llctrlselectioninterface.h"
/*
* An invisible view containing multiple mutually exclusive toggling
* buttons (usually radio buttons). Automatically handles the mutex
* condition by highlighting only one button at a time.
*/
class LLRadioGroup
: public LLUICtrl, public LLCtrlSelectionInterface
{
public:
struct ItemParams : public LLInitParam::Block<ItemParams, LLCheckBoxCtrl::Params>
{
Optional<LLSD> value;
ItemParams();
};
struct Params : public LLInitParam::Block<Params, LLUICtrl::Params>
{
Optional<bool> allow_deselect;
Multiple<ItemParams, AtLeast<1> > items;
Params();
};
protected:
LLRadioGroup(const Params&);
friend class LLUICtrlFactory;
public:
/*virtual*/ void initFromParams(const Params&);
virtual ~LLRadioGroup();
virtual bool postBuild();
virtual bool handleKeyHere(KEY key, MASK mask);
void setIndexEnabled(S32 index, bool enabled);
// return the index value of the selected item
S32 getSelectedIndex() const { return mSelectedIndex; }
// set the index value programatically
bool setSelectedIndex(S32 index, bool from_event = false);
// foxus child by index if it can get focus
void focusSelectedRadioBtn();
// Accept and retrieve strings of the radio group control names
virtual void setValue(const LLSD& value );
virtual LLSD getValue() const;
// Update the control as needed. Userdata must be a pointer to the button.
void onClickButton(LLUICtrl* clicked_radio);
//========================================================================
LLCtrlSelectionInterface* getSelectionInterface() { return (LLCtrlSelectionInterface*)this; };
// LLCtrlSelectionInterface functions
/*virtual*/ S32 getItemCount() const { return static_cast<S32>(mRadioButtons.size()); }
/*virtual*/ bool getCanSelect() const { return true; }
/*virtual*/ bool selectFirstItem() { return setSelectedIndex(0); }
/*virtual*/ bool selectNthItem( S32 index ) { return setSelectedIndex(index); }
/*virtual*/ bool selectItemRange( S32 first, S32 last ) { return setSelectedIndex(first); }
/*virtual*/ S32 getFirstSelectedIndex() const { return getSelectedIndex(); }
/*virtual*/ bool setCurrentByID( const LLUUID& id );
/*virtual*/ LLUUID getCurrentID() const; // LLUUID::null if no items in menu
/*virtual*/ bool setSelectedByValue(const LLSD& value, bool selected);
/*virtual*/ LLSD getSelectedValue();
/*virtual*/ bool isSelected(const LLSD& value) const;
/*virtual*/ bool operateOnSelection(EOperation op);
/*virtual*/ bool operateOnAll(EOperation op);
private:
const LLFontGL* mFont;
S32 mSelectedIndex;
typedef std::vector<class LLRadioCtrl*> button_list_t;
button_list_t mRadioButtons;
bool mAllowDeselect; // user can click on an already selected option to deselect it
};
#endif
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