Source: shellfish-ui/ui/TimePicker.shui

/*******************************************************************************
This file is part of the Shellfish UI toolkit.
Copyright (c) 2021 Martin Grimme <martin.grimme@gmail.com>

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*******************************************************************************/

require "shellfish/ui";

/**
 * Element representing a time picker button.
 *
 * @memberof ui
 * @name TimePicker
 * @class
 * @extends ui.Button
 *
 * @property {number[]} time - The currently selected time as a tuple of `[hours, minutes]`.
 * @property {bool} twentyFourHours - (default: `false`) Whether to display the time in 24h mode.
 */
Button {
    id: timeButton

    property menuT: template Menu {
        id: menu

        function setTime(h, m)
        {
            hoursSlider.value = h;
            minutesSlider.value = m;
        }

        onCascadingClose: () =>
        {
            timeButton.time = [
                Math.floor(hoursSlider.value),
                Math.floor(minutesSlider.value)
            ];
        }

        MouseBox {
            width: theme.itemWidthLarge * 2
            color: theme.primaryBackgroundColor

            onPointerDown: (ev) => { ev.accepted = true; }

            Box {
                fillWidth: true
                height: theme.itemHeightMedium
                color: theme.secondaryBackgroundColor
                layout: "center-row"

                Label {
                    fillWidth: true
                    marginLeft: theme.paddingSmall
                    bold: true
                    text: timeButton.formatTime(hoursSlider.value | 0,
                                                minutesSlider.value | 0,
                                                timeButton.twentyFourHours)
                }

                Button {
                    fillHeight: true
                    icon: "core-time"
                    flat: true

                    onClick: () =>
                    {
                        const now = new Date();
                        menu.setTime(now.getHours(), now.getMinutes());
                    }
                }

                Button {
                    enabled: Math.floor(hoursSlider.value) !== timeButton.time[0] ||
                             Math.floor(minutesSlider.value) !== timeButton.time[1]
                    fillHeight: true
                    icon: "core-reset"
                    flat: true

                    onClick: () =>
                    {
                        menu.setTime(timeButton.time[0], timeButton.time[1]);
                    }
                }
            }

            Slider {
                id: hoursSlider

                fillWidth: true
                marginTop: theme.paddingSmall
                marginLeft: theme.paddingSmall
                marginRight: theme.paddingSmall
                minValue: 0
                maxValue: 23
                value: 0
            }

            Slider {
                id: minutesSlider

                fillWidth: true
                marginTop: theme.paddingSmall
                marginLeft: theme.paddingSmall
                marginRight: theme.paddingSmall
                marginBottom: theme.paddingSmall
                minValue: 0
                maxValue: 59
                value: 0
            }
        }
    }

    property time: (() =>
                   {
                       const d = new Date();
                       return [d.getHours(), d.getMinutes()];
                   })()

    property twentyFourHours: false

    function formatTime(h, m, mode24h)
    {
        let h2 = h;
        if (! mode24h && h > 12)
        {
            h2 = h % 12;
        }
        return (h2 <= 9 ? "0" : "") +
               h2 +
               ":" +
               (m <= 9 ? "0" : "") +
               m +
               (! mode24h ? (h < 12 ? " am" : " pm") : "");
    }

    icon: "core-time"
    text: formatTime(time[0], time[1], twentyFourHours)

    onPointerDown: (ev) =>
    {
        const m = menuT();
        m.setTime(time[0], time[1]);
        m.popup(self);
        ev.accepted = true;
    }
}