import QtQuick 2.0
import QtGraphicalEffects 1.0

Item {
    id: frame
    signal selected(var userName)
    signal needClose()

    readonly property int m_viewMaxWidth: frame.width - prevUser.width - nextUser.width - 130
    property string currentIconPath: usersList.currentItem.iconPath
    property string currentUserName: usersList.currentItem.userName
    property bool showBG: false
    property alias currentItem: usersList.currentItem

    function isMultipleUsers() {
        return usersList.count > 1
    }

    onOpacityChanged: {
        showBG = false
    }

    onFocusChanged: {
        if(focus) {
            usersList.currentItem.focus = false
        }
    }

    ImgButton {
        id: prevUser
        visible: usersList.childrenRect.width > m_viewMaxWidth
        anchors.left: parent.left
        anchors.verticalCenter: parent.verticalCenter
        anchors.margins: 10
        normalImg: "icons/angle-left.png"
        onClicked: {
            usersList.decrementCurrentIndex()
            showBG = true
        }
    }

    ListView {
        id: usersList
        anchors.centerIn: parent
        width: childrenRect.width > m_viewMaxWidth ?
            m_viewMaxWidth : childrenRect.width
        height: 150
        model: userModel
        clip: true
        spacing: 10
        orientation: ListView.Horizontal

        delegate: Rectangle {
            id: item
            property string iconPath: icon
            property string userName: nameText.text
            property bool activeBG: usersList.currentIndex === index && showBG

            border.width: 3
            border.color: activeBG || focus ? "#33ffffff" : "transparent"
            radius: 8
            color: activeBG || focus? "#55000000" : "transparent"

            width: 130
            height: 150

            function select() {
                selected(name)
                usersList.currentIndex = index
                currentIconPath = icon
                currentUserName = name
            }

            UserAvatar {
                id: iconButton
                anchors.top: parent.top
                anchors.horizontalCenter: parent.horizontalCenter
                width: 122
                height: 122
                source: icon
                onClicked: item.select()
            }

            Text {
                id: nameText
                width: parent.width
                anchors.bottom: parent.bottom
                anchors.horizontalCenter: parent.horizontalCenter
                horizontalAlignment: Text.AlignHCenter
                text: name
                font.pointSize: 15
                color: "white"
                wrapMode: Text.WordWrap
            }

            Keys.onLeftPressed: {
                usersList.decrementCurrentIndex()
                usersList.currentItem.forceActiveFocus()
            }
            Keys.onRightPressed: {
                usersList.incrementCurrentIndex()
                usersList.currentItem.forceActiveFocus()
            }
            Keys.onEscapePressed: needClose()
            Keys.onEnterPressed: item.select()
            Keys.onReturnPressed: item.select()

            Component.onCompleted: {
                if(name === userModel.lastUser) {
                    item.select()
                }
            }
        }
    }

    ImgButton {
        id: nextUser
        visible: usersList.childrenRect.width > m_viewMaxWidth
        anchors.right: parent.right
        anchors.verticalCenter: parent.verticalCenter
        anchors.margins: 10
        normalImg: "icons/angle-right.png"
        onClicked: {
            usersList.incrementCurrentIndex()
            showBG = true
        }
    }

    MouseArea {
        z: -1
        anchors.fill: parent
        onClicked: needClose()
    }

    Keys.onEscapePressed: needClose()
}