Source: shellfish-ui/ui/DatePicker.shui

/*******************************************************************************
This file is part of the Shellfish UI toolkit.
Copyright (c) 2021 - 2024 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 date picker button.
 *
 * @memberof ui
 * @name DatePicker
 * @class
 * @extends ui.Button
 *
 * @property {number[]} date - The currently selected date as a tuple of `[year, month, day]`.
 */
Button {
    id: dateButton

    property menuT: template Menu {
        function setDate(date)
        {
            cal.date = date;
        }

        MouseBox {
            width: theme.itemWidthSmall * 7
            height: theme.itemHeightMedium * 7
            color: theme.contentBackgroundColor
            
            onPointerDown: (ev) => { ev.accepted = true; }

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

                Button {
                    labelProfile: Object { property bold: true }
                    fillHeight: true
                    flat: true
                    text: ["Jan", "Feb", "Mar", "Apr",
                           "May", "Jun", "Jul", "Aug",
                           "Sep", "Oct", "Nov", "Dec"][cal.date[1]]

                    onClick: (ev) =>
                    {
                        cal.pickMonth();
                        ev.accepted = true;
                    }
                }

                Button {
                    labelProfile: Object { property bold: true }
                    fillHeight: true
                    flat: true
                    text: "" + cal.date[0]

                    onClick: (ev) =>
                    {
                        cal.pickYear();
                        ev.accepted = true;
                    }
                }

                Box { fillWidth: true }

                Button {
                    icon: "core-calendar"
                    fillHeight: true
                    flat: true
                    onClick: (ev) =>
                    {
                        cal.toToday();
                        ev.accepted = true;
                    }
                }

                Button {
                    icon: "core-arrow_up"
                    fillHeight: true
                    flat: true
                    onClick: (ev) =>
                    {
                        cal.toPreviousMonth();
                        ev.accepted = true;
                    }
                }

                Button {
                    icon: "core-arrow_down"
                    fillHeight: true
                    flat: true
                    onClick: (ev) =>
                    {
                        cal.toNextMonth();
                        ev.accepted = true;
                    }
                }
            }

            Calendar {
                id: cal

                function isToday(year, month, day)
                {
                    const now = new Date();
                    return now.getFullYear() === year &&
                        now.getMonth() === month &&
                        now.getDate() === day;
                }

                fillWidth: true
                fillHeight: true

                dayDelegate: template MouseBox {
                    id: dayButton

                    visible: modelData.value.day !== 0
                    opacity: modelData.value.month === cal.date[1] ? 1.0 : 0.4
                    color: containsMouse ? theme.highlightBackgroundColor : "transparent"

                    layout: "center"

                    onClick: ev =>
                    {
                        dateButton.date = [modelData.value.year,
                                           modelData.value.month,
                                           modelData.value.day];
                        thisMenu.close();
                        ev.accepted = true;
                    }

                    Label {
                        fontSize: theme.fontSizeSmall
                        bold: cal.isToday(dayButton.modelData.value.year,
                                          dayButton.modelData.value.month,
                                          dayButton.modelData.value.day)
                        color: parent.containsMouse ? theme.highlightColor : theme.primaryColor
                        text: "" + modelData.value.day
                    }
                }
            }
        }
    }

    property date: (() =>
                   {
                       const d = new Date();
                       return [d.getFullYear(), d.getMonth(), d.getDate()];
                   })()

    function formatDate(y, m, d)
    {
        const n = new Date(y, m, d);
        return n.toLocaleDateString();
    }

    icon: "core-calendar"
    text: formatDate(...date)

    onPointerDown: (ev) =>
    {
        const m = menuT();
        m.setDate(date);
        m.popup(self);
        ev.accepted = true;
    }
}