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** This file is part of Qt Creator.
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import QtQuick 2.1
import QtQuick.Controls 1.1 as Controls
import QtQuick.Layouts 1.0

Item {

    id: section
    property alias caption: label.text
    property int leftPadding: 8
    property int topPadding: 4
    property int rightPadding: 0

    clip: true

    Rectangle {
        id: header
        height: 18

        anchors.left: parent.left
        anchors.right: parent.right

        Controls.Label {
            id: label
            anchors.verticalCenter: parent.verticalCenter
            color: "white"
            x: 22
            style: Text.Sunken
            styleColor: "#292929"
            font.bold: true
        }

        Image {
            source: "images/down-arrow.png"
            rotation: section.state === "Collapsed" ? -90 : 0
            anchors.left: parent.left
            anchors.leftMargin: 4
            anchors.verticalCenter: parent.verticalCenter
            Behavior on rotation {NumberAnimation{duration: 80}}
        }

        gradient: Gradient {
            GradientStop {color: '#555' ; position: 0}
            GradientStop {color: '#444' ; position: 1}
        }

        Rectangle {
            color:"#333"
            width: parent.width
            height: 1
        }

        Rectangle {
            color: "#333"
            anchors.bottom: parent.bottom
            width: parent.width
            height: 1
        }

        MouseArea {
            anchors.fill: parent
            onClicked: {
                if (section.state === "")
                    section.state = "Collapsed";
                else
                    section.state = "";
            }
        }
    }

    default property alias __content: row.children

    readonly property alias contentItem: row

    implicitHeight: Math.round(row.height + header.height + 8)

    Row {
        anchors.left: parent.left
        anchors.leftMargin: leftPadding
        anchors.right: parent.right
        anchors.rightMargin: rightPadding
        anchors.top: header.bottom
        anchors.topMargin: topPadding
        id: row
        Behavior on opacity { NumberAnimation{easing.type: Easing.Linear ; duration: 80} }
    }

    Behavior on height { NumberAnimation{easing.type: Easing.OutCubic ; duration: 140} }

    states: [
        State {
            name: "Collapsed"
            PropertyChanges {
                target: section
                implicitHeight: header.height
            }
            PropertyChanges {
                target: row
                opacity: 0

            }
        }
    ]

}