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import QtQuick 2.0
import QtQml.Models 2.1

Rectangle {
    id: menuBar
    width: 1000; height: 300
    color: "transparent"
    property color fileColor: "plum"
    property color editColor: "powderblue"

    property real partition: 1 / 10

    Column {
        anchors.fill: parent
        z: 1

        // Container for the header and the buttons
        Rectangle {
            id: labelList
            height: menuBar.height * partition
            width: menuBar.width
            color: "beige"
            gradient: Gradient {
                GradientStop { position: 0.0; color: "#8C8F8C" }
                GradientStop { position: 0.17; color: "#6A6D6A" }
                GradientStop { position: 0.98;color: "#3F3F3F" }
                GradientStop { position: 1.0; color: "#0e1B20" }
            }

            Text {
                height: parent.height
                anchors { right: labelRow.left; verticalCenter: parent.bottom }
                text: "menu:    "
                color: "lightblue"
                font { weight: Font.Light; italic: true }
            }

            // Row displays its children in a vertical row
            Row {
                id: labelRow
                anchors.centerIn: parent
                spacing: 40

                Button {
                    id: fileButton
                    width: 50; height: 20
                    label: "File"
                    buttonColor: menuListView.currentIndex == 0 ? fileColor : Qt.darker(fileColor, 1.5)
                    scale: menuListView.currentIndex == 0 ? 1.25 : 1
                    labelSize: menuListView.currentIndex == 0 ? 16 : 12
                    radius: 1

                    // On a button click, change the list's currently selected item to FileMenu
                    onButtonClick: menuListView.currentIndex = 0

                    gradient: Gradient {
                        GradientStop { position: 0.0; color: fileColor }
                        GradientStop { position: 1.0; color: "#136F6F6F" }
                    }
                }

                Button {
                    id: editButton
                    width: 50; height: 20
                    buttonColor : menuListView.currentIndex == 1 ? Qt.darker(editColor, 1.5) : Qt.darker(editColor, 1.9)
                    scale: menuListView.currentIndex == 1 ? 1.25 : 1
                    label: "Edit"
                    radius: 1
                    labelSize: menuListView.currentIndex == 1 ? 16 : 12

                    //on a button click, change the list's currently selected item to EditMenu
                    onButtonClick: menuListView.currentIndex = 1
                    gradient: Gradient {
                        GradientStop { position: 0.0; color: editColor }
                        GradientStop { position: 1.0; color: "#136F6F6F" }
                    }
                }
            }
        }

        // A ListView will display a model according to a delegate
        ListView {
            id: menuListView
            width: menuBar.width
            height: 9 * menuBar.height * partition

            // The model contains the data
            model: menuListModel

            //control the movement of the menu switching
            snapMode: ListView.SnapOneItem
            orientation: ListView.Horizontal
            boundsBehavior: Flickable.StopAtBounds
            flickDeceleration: 5000
            highlightFollowsCurrentItem: true
            highlightMoveDuration: 240
            highlightRangeMode: ListView.StrictlyEnforceRange
        }
    }

    // A list of visual items that already have delegates handling their display
    ObjectModel {
        id: menuListModel

        FileMenu {
            id: fileMenu
            width: menuListView.width
            height: menuListView.height
            color: fileColor
        }
        EditMenu {
            color: editColor
            width: menuListView.width
            height: menuListView.height
        }
    }
}