//
//  Table.qml
//
//  Created by David Rowe on 18 Feb 2016
//  Copyright 2016 High Fidelity, Inc.
//
//  Distributed under the Apache License, Version 2.0.
//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//

import QtQuick 2.5
import QtQuick.Controls 1.4
import QtQuick.Controls.Styles 1.4
import QtQuick.Controls 2.3 as QQC2

import "../stylesUit"

TableView {
    id: tableView

    property int colorScheme: hifi.colorSchemes.light
    readonly property bool isLightColorScheme: colorScheme == hifi.colorSchemes.light
    property bool expandSelectedRow: false
    property bool centerHeaderText: false
    readonly property real headerSpacing: 3 //spacing between sort indicator and table header title
    property var titlePaintedPos: [] // storing extra data position behind painted
                                     // title text and sort indicatorin table's header
    signal titlePaintedPosSignal(int column) //signal that extradata position gets changed

    model: ListModel { }

    Component.onCompleted: {
        if (flickableItem !== null && flickableItem !== undefined) {
            tableView.flickableItem.QQC2.ScrollBar.vertical = scrollbar
        }
    }

    QQC2.ScrollBar {
        id: scrollbar
        parent: tableView.flickableItem
        policy: QQC2.ScrollBar.AsNeeded
        orientation: Qt.Vertical
        visible: size < 1.0
        topPadding: tableView.headerVisible ? hifi.dimensions.tableHeaderHeight + 1 : 1
        anchors.top: tableView.top
        anchors.left: tableView.right
        anchors.bottom: tableView.bottom

        background: Item {
            implicitWidth: hifi.dimensions.scrollbarBackgroundWidth
            Rectangle {
                anchors {
                    fill: parent;
                    topMargin: tableView.headerVisible ? hifi.dimensions.tableHeaderHeight : 0
                }
                color: isLightColorScheme ? hifi.colors.tableScrollBackgroundLight
                                          : hifi.colors.tableScrollBackgroundDark
            }
        }

        contentItem: Item {
            implicitWidth: hifi.dimensions.scrollbarHandleWidth
            Rectangle {
                anchors.fill: parent
                radius: (width - 4)/2
                color: isLightColorScheme ? hifi.colors.tableScrollHandleLight : hifi.colors.tableScrollHandleDark
            }
        }
    }

    headerVisible: false
    headerDelegate: Rectangle {
        height: hifi.dimensions.tableHeaderHeight
        color: isLightColorScheme ? hifi.colors.tableBackgroundLight : hifi.colors.tableBackgroundDark


        RalewayRegular {
            id: titleText
            x: centerHeaderText ? (parent.width - paintedWidth -
                                  ((sortIndicatorVisible &&
                                    sortIndicatorColumn === styleData.column) ?
                                       (titleSort.paintedWidth / 5 + tableView.headerSpacing) : 0)) / 2 :
                                  hifi.dimensions.tablePadding
            text: styleData.value
            size: hifi.fontSizes.tableHeading
            font.capitalization: Font.AllUppercase
            color: hifi.colors.baseGrayHighlight
            horizontalAlignment: (centerHeaderText ? Text.AlignHCenter : Text.AlignLeft)
            anchors.verticalCenter: parent.verticalCenter
        }

        //actual image of sort indicator in glyph font only 20% of real font size
        //i.e. if the charachter size set to 60 pixels, actual image is 12 pixels
        HiFiGlyphs {
            id: titleSort
            text:  sortIndicatorOrder == Qt.AscendingOrder ? hifi.glyphs.caratUp : hifi.glyphs.caratDn
            color: hifi.colors.darkGray
            opacity: 0.6;
            size: hifi.fontSizes.tableHeadingIcon
            anchors.verticalCenter: titleText.verticalCenter
            anchors.left: titleText.right
            anchors.leftMargin: -(hifi.fontSizes.tableHeadingIcon / 2.5) + tableView.headerSpacing
            visible: sortIndicatorVisible && sortIndicatorColumn === styleData.column
            onXChanged: {
                titlePaintedPos[styleData.column] = titleText.x + titleText.paintedWidth +
                        paintedWidth / 5 + tableView.headerSpacing*2
                titlePaintedPosSignal(styleData.column)
            }
        }

        Rectangle {
            width: 1
            anchors {
                left: parent.left
                top: parent.top
                topMargin: 1
                bottom: parent.bottom
                bottomMargin: 2
            }
            color: isLightColorScheme ? hifi.colors.lightGrayText : hifi.colors.baseGrayHighlight
            visible: styleData.column > 0
        }

        Rectangle {
            height: 1
            anchors {
                left: parent.left
                right: parent.right
                bottom: parent.bottom
            }
            color: isLightColorScheme ? hifi.colors.lightGrayText : hifi.colors.baseGrayHighlight
        }
    }

    // Use rectangle to draw border with rounded corners.
    frameVisible: false
    Rectangle {
        color: "#00000000"
        anchors { fill: parent; margins: -2 }
        border.color: isLightColorScheme ? hifi.colors.lightGrayText : hifi.colors.baseGrayHighlight
        border.width: 2
    }
    anchors.margins: 2  // Shrink TableView to lie within border.

    backgroundVisible: true

    horizontalScrollBarPolicy: Qt.ScrollBarAlwaysOff
    verticalScrollBarPolicy: Qt.ScrollBarAlwaysOff

    style: TableViewStyle {
        // Needed in order for rows to keep displaying rows after end of table entries.
        backgroundColor: tableView.isLightColorScheme ? hifi.colors.tableBackgroundLight : hifi.colors.tableBackgroundDark
        alternateBackgroundColor: tableView.isLightColorScheme ? hifi.colors.tableRowLightOdd : hifi.colors.tableRowDarkOdd
        padding.top: headerVisible ? hifi.dimensions.tableHeaderHeight: 0
    }

    rowDelegate: Rectangle {
        height: (styleData.selected && expandSelectedRow ? 1.8 : 1) * hifi.dimensions.tableRowHeight
        color: styleData.selected
               ? hifi.colors.primaryHighlight
               : tableView.isLightColorScheme
                 ? (styleData.alternate ? hifi.colors.tableRowLightEven : hifi.colors.tableRowLightOdd)
                 : (styleData.alternate ? hifi.colors.tableRowDarkEven : hifi.colors.tableRowDarkOdd)
    }
}