/**
 * @file llscrollingpanelparam.h
 * @brief the scrolling panel containing a list of visual param
 *        panels
 *
 * $LicenseInfo:firstyear=2009&license=viewerlgpl$
 * 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_SCROLLINGPANELPARAM_H
#define LL_SCROLLINGPANELPARAM_H

#include "llscrollingpanelparambase.h"

class LLBorder;
class LLButton;
class LLViewerJointMesh;
class LLViewerVisualParam;
class LLWearable;
class LLVisualParamHint;
class LLViewerVisualParam;
class LLJoint;

class LLScrollingPanelParam : public LLScrollingPanelParamBase
{
public:
    LLScrollingPanelParam( const LLPanel::Params& panel_params,
                   LLViewerJointMesh* mesh, LLViewerVisualParam* param, bool allow_modify, LLWearable* wearable, LLJoint* jointp, bool use_hints = true );
    virtual ~LLScrollingPanelParam();

    void                draw() override;
    void                setVisible(bool visible) override;
    void                updatePanel(bool allow_modify) override;

    static void         onSliderMouseDown(LLUICtrl* ctrl, void* userdata);
    static void         onSliderMouseUp(LLUICtrl* ctrl, void* userdata);

    static void         onHintMinMouseDown(void* userdata);
    static void         onHintMinHeldDown(void* userdata);
    static void         onHintMaxMouseDown(void* userdata);
    static void         onHintMaxHeldDown(void* userdata);
    static void         onHintMinMouseUp(void* userdata);
    static void         onHintMaxMouseUp(void* userdata);

    void                onHintMouseDown( LLVisualParamHint* hint );
    void                onHintHeldDown( LLVisualParamHint* hint );

    F32                 weightToPercent( F32 weight );
    F32                 percentToWeight( F32 percent );

public:
    // Constants for LLPanelVisualParam
    const static F32 PARAM_STEP_TIME_THRESHOLD;

    const static S32 PARAM_HINT_WIDTH;
    const static S32 PARAM_HINT_HEIGHT;

public:
    LLPointer<LLVisualParamHint>    mHintMin;
    LLPointer<LLVisualParamHint>    mHintMax;
    static S32          sUpdateDelayFrames;

protected:
    LLTimer             mMouseDownTimer;    // timer for how long mouse has been held down on a hint.
    F32                 mLastHeldTime;
    bool mAllowModify;

    LLButton* mLessBtn;
    LLButton* mMoreBtn;
    LLViewBorder* mLeftBorder;
    LLViewBorder* mRightBorder;
    LLUICtrl* mMinParamText;
    LLUICtrl* mMaxParamText;
};

#endif