// Copyright (c) 2014-2015, The Monero Project
// 
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
// 
// 1. Redistributions of source code must retain the above copyright notice, this list of
//    conditions and the following disclaimer.
// 
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
//    of conditions and the following disclaimer in the documentation and/or other
//    materials provided with the distribution.
// 
// 3. Neither the name of the copyright holder nor the names of its contributors may be
//    used to endorse or promote products derived from this software without specific
//    prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

import QtQuick 2.0

Item {
    id: dropdown
    property bool expanded: false
    property alias dataModel: repeater.model
    signal collapsed()
    signal optionClicked(int option)
    width: 72
    height: 37

    onExpandedChanged: if(expanded) appWindow.currentItem = dropdown
    function hide() { dropdown.expanded = false }
    function containsPoint(px, py) {
        if(px < 0)
            return false
        if(px > width)
            return false
        if(py < 0)
            return false
        if(py > height + dropArea.height)
            return false
        return true
    }

    Item {
        id: head
        anchors.fill: parent

        Rectangle {
            anchors.left: parent.left
            anchors.right: parent.right
            height: parent.height - 1
            y: dropdown.expanded || dropArea.height > 0 ? 0 : 1
            //radius: 3
            color: dropdown.expanded || dropArea.height > 0 ? "#888888" : "#DBDBDB"
        }

        Rectangle {
            anchors.left: parent.left
            anchors.right: parent.right
            height: parent.height - 1
            y: dropdown.expanded || dropArea.height > 0 ? 1 : 0
            //radius: 3
            color: dropdown.expanded || dropArea.height > 0 ? "#DBDBDB" : "#F0EEEE"
        }

        Rectangle {
            anchors.left: parent.left
            anchors.bottom: parent.bottom
            height: 3
            width: 3
            color: "#DBDBDB"
            visible: dropdown.expanded || dropArea.height > 0
        }

        Rectangle {
            anchors.right: parent.right
            anchors.bottom: parent.bottom
            height: 3
            width: 3
            color: "#DBDBDB"
            visible: dropdown.expanded || dropArea.height > 0
        }

        Image {
            anchors.verticalCenter: parent.verticalCenter
            anchors.left: parent.left
            anchors.leftMargin: 10
            source: "../images/tableOptions.png"
        }

        Rectangle {
            anchors.centerIn: parent
            anchors.horizontalCenterOffset: 1
            height: 23
            width: 1
            color: dropdown.expanded || dropArea.height > 0 ? "#FFFFFF" : "#DBDBDB"
        }

        Image {
            anchors.verticalCenter: parent.verticalCenter
            anchors.right: parent.right
            anchors.rightMargin: 10
            source: "../images/dropIndicator.png"
        }
    }

    Timer {
        id: timer
        interval: 50
        repeat: true
        running: false
        onTriggered: {
            if(((tipItem.visible && !tipItem.containsMouse) || !tipItem.visible) && !mouseArea.containsMouse) {
                tipItem.visible = false
                dropdown.expanded = false
                currentIndex = -1
                timer.stop()
            }
        }
    }

    MouseArea {
        id: mouseArea
        anchors.left: head.left
        anchors.right: head.right
        anchors.top: head.top
        height: head.height + dropArea.height
        hoverEnabled: true
        onEntered: dropdown.expanded = true

        property int currentIndex: -1
        onMouseYChanged: {
            if(mouseY > head.height) {
                var posY = parseInt((mouseY - head.height) / 30)
                currentIndex = posY
            } else {
                currentIndex = -1
            }
        }

        onClicked: {
            optionClicked(currentIndex)
        }

        onExited: timer.start()
        preventStealing: true
        z: 1

        Item {
            id: dropArea
            anchors.left: parent.left
            anchors.right: parent.right
            y: head.height
            height: dropdown.expanded ? column.height : 0
            onHeightChanged: if(height === 0) dropdown.collapsed()
            clip: true

            Behavior on height {
                NumberAnimation { duration: 100; easing.type: Easing.InQuad }
            }

            Column {
                id: column
                anchors.left: parent.left
                anchors.right: parent.right
                anchors.top: parent.top

                Repeater {
                    id: repeater
                    delegate: Rectangle {
                        id: delegate
                        property bool containsMouse: index === mouseArea.currentIndex
                        anchors.left: parent.left
                        anchors.right: parent.right
                        height: 30
                        color: containsMouse ? "#F0EEEE" : "#DBDBDB"
                        //radius: index === repeater.count - 1 ? 5 : 0

                        Rectangle {
                            anchors.left: parent.left
                            anchors.top: parent.top
                            width: 5
                            height: 5
                            color: delegate.color
                        }

                        Rectangle {
                            anchors.right: parent.right
                            anchors.top: parent.top
                            width: 5
                            height: 5
                            color: delegate.color
                        }

                        Image {
                            anchors.verticalCenter: parent.verticalCenter
                            anchors.left: parent.left
                            anchors.leftMargin: 10
                            source: icon
                        }

                        onContainsMouseChanged: {
                            if(containsMouse) {
                                var pos = rootItem.mapFromItem(delegate, 30, -20)
                                tipItem.text = name
                                tipItem.x = pos.x + appWindow.x
                                if(tipItem.height > 30)
                                    pos.y -= tipItem.height - 30
                                tipItem.y = pos.y + appWindow.y
                                tipItem.visible = true
                            }
                        }

                    }
                }
            }
        }
    }
}