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import QtQuick 2.10
import QtQuick.Controls 2.3
import QtQuick.Templates 2.3 as T
import QtQuick.Controls.Material 2.3
import QtQuick.Controls.Material.impl 2.3

T.Menu {
    id: control

    Material.elevation: 8

    implicitWidth: Math.max(background ? background.implicitWidth : 0,
                            contentItem ? contentItem.implicitWidth + leftPadding + rightPadding : 0)
    implicitHeight: Math.max(background ? background.implicitHeight : 0,
                             contentItem ? contentItem.implicitHeight : 0) + topPadding + bottomPadding

    margins: 0
    topPadding: 8
    bottomPadding: 8

    transformOrigin: !cascade ? Item.Top : (mirrored ? Item.TopRight : Item.TopLeft)

    delegate: MenuItem { }

    enter: Transition {
        // grow_fade_in
        NumberAnimation { property: "scale"; from: 0.9; to: 1.0; easing.type: Easing.OutQuint; duration: 220 }
        NumberAnimation { property: "opacity"; from: 0.0; to: 1.0; easing.type: Easing.OutCubic; duration: 150 }
    }

    exit: Transition {
        // shrink_fade_out
        NumberAnimation { property: "scale"; from: 1.0; to: 0.9; easing.type: Easing.OutQuint; duration: 220 }
        NumberAnimation { property: "opacity"; from: 1.0; to: 0.0; easing.type: Easing.OutCubic; duration: 150 }
    }

    contentItem: ListView {
        implicitHeight: contentHeight

        model: control.contentModel
        // TODO: improve this?
        interactive: ApplicationWindow.window ? contentHeight > ApplicationWindow.window.height : false
        clip: true
        currentIndex: control.currentIndex

        ScrollIndicator.vertical: ScrollIndicator {}
    }

    background: Rectangle {
        implicitWidth: 200
        implicitHeight: 48

        radius: 3
        color: control.Material.dialogColor

        layer.enabled: control.Material.elevation > 0
        layer.effect: ElevationEffect {
            elevation: control.Material.elevation
        }
    }

    T.Overlay.modal: Rectangle {
        color: control.Material.backgroundDimColor
        Behavior on opacity { NumberAnimation { duration: 150 } }
    }

    T.Overlay.modeless: Rectangle {
        color: control.Material.backgroundDimColor
        Behavior on opacity { NumberAnimation { duration: 150 } }
    }
}
