import QtQuick 2.12
import QtQuick.Controls 2.5
import QtQuick.Layouts 1.15

import "util.mjs" as Util
import "gravity.mjs" as Gravity

Rectangle {
    property var tag: "HLayout"

    property var uuid: Util.uuidv4()

    property int widthSpec: 0
    property int heightSpec: 0
    property int childrenRectWidth: childrenRect.width
    property int childrenRectHeight: childrenRect.height

    onWidthChanged: () => {
        console.log(tag, uuid + " onWidthChanged: " + this.width)
    }

    onHeightChanged: () => {
        console.log(tag, uuid + " onHeightChanged: " + this.height)
    }

    onWidthSpecChanged: () => {
        console.log(tag, uuid + " onWidthSpecChanged: " + this.widthSpec)
        console.log(tag, uuid + " parent width: " + parent.width)

        if (this.widthSpec === 2) {
            this.width = parent.width
//            children[0].width = parent.width
        }
    }

    onHeightSpecChanged: () => {
        console.log(tag, uuid + " onHeightSpecChanged: " + this.heightSpec)
        console.log(tag, uuid + " parent height: " + parent.height)

        if (this.heightSpec === 2) {
            this.height = parent.height
            children[0].height = parent.height
        }
    }

    onChildrenRectChanged: () => {
        console.log(tag, uuid + " widthSpec: " + widthSpec + " heightSpec: " + heightSpec)
        console.log(tag, uuid + " onChildrenRectChanged: " + childrenRect)
        this.childrenRectWidth = childrenRect.width
        this.childrenRectHeight = childrenRect.height

        if (this.widthSpec === 1) {
            this.width = childrenRectWidth
        }

        if (this.heightSpec === 1) {
            this.height = childrenRectHeight
        }
    }

    color: 'transparent'

    RowLayout {
        property int gravity: 0

        spacing: 0

        onChildrenChanged: () => {
            console.log(tag, uuid + " gravity: " + gravity)
            for (var i = 0;i !== children.length;i++) {
                switch(this.gravity) {
                    case Gravity.enumerate().CENTER_X:
                        children[i].Layout.alignment = Qt.AlignHCenter
                        break
                }
            }
        }
    }
}