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/**
 * @file lltimectrl.h
 * @brief Time control
 *
 * $LicenseInfo:firstyear=2002&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2011, 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 LLTIMECTRL_H_
#define LLTIMECTRL_H_

#include "stdtypes.h"
#include "llbutton.h"
#include "v4color.h"
#include "llrect.h"

class LLLineEditor;

class LLTimeCtrl
: public LLUICtrl
{
    LOG_CLASS(LLTimeCtrl);
public:
    struct Params : public LLInitParam::Block<Params, LLUICtrl::Params>
    {
        Optional<S32> label_width;
        Optional<S32> snap_to;
        Optional<bool> allow_text_entry;

        Optional<LLUIColor> text_enabled_color;
        Optional<LLUIColor> text_disabled_color;

        Optional<LLButton::Params> up_button;
        Optional<LLButton::Params> down_button;

        Params();
    };

    F32 getTime24() const;      // 0.0 - 24.0
    U32 getHours24() const;     // 0 - 23
    U32 getMinutes() const;     // 0 - 59

    void setTime24(F32 time);   // 0.0 - 23.98(3)

    static std::string getHoursString(const std::string& str);
    static std::string getMinutesString(const std::string& str);
    static std::string getAMPMString(const std::string& str);

    static bool isHoursStringValid(const std::string& str);
    static bool isMinutesStringValid(const std::string& str);
    static bool isPMAMStringValid(const std::string& str);

    static U32  parseHours(const std::string& str);
    static U32  parseMinutes(const std::string& str);
    static bool parseAMPM(const std::string& str);

protected:
    LLTimeCtrl(const Params&);
    friend class LLUICtrlFactory;

private:

    enum EDayPeriod
    {
        AM,
        PM
    };

    enum EEditingPart
    {
        HOURS,
        MINUTES,
        DAYPART,
        NONE
    };

    virtual void    onFocusLost();
    virtual bool    handleKeyHere(KEY key, MASK mask);

    void    onUpBtn();
    void    onDownBtn();
    void    onTextEntry(LLLineEditor* line_editor);

    void increaseMinutes();
    void increaseHours();

    void decreaseMinutes();
    void decreaseHours();

    bool isPM() const;
    void switchDayPeriod();

    void updateText();

    EEditingPart getEditingPart();

    class LLTextBox*    mLabelBox;

    class LLLineEditor* mEditor;
    LLUIColor           mTextEnabledColor;
    LLUIColor           mTextDisabledColor;

    class LLButton*     mUpBtn;
    class LLButton*     mDownBtn;

    U32             mTime;              // minutes since midnight: 0 - 1439
    U32             mSnapToMin;         // interval in minutes to snap to

    bool            mAllowEdit;
};
#endif /* LLTIMECTRL_H_ */