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import QtQuick 2.6
import QtQuick.Window 2.2
import QtQuick.Controls 1.4
import QtQuick.Controls 2.0 as NewControls
import QtQuick.Layouts 1.1
import TaskManager 1.0
import QtCharts 2.2

Window {
    id: root
    visible: true
    width: 745
    height: 480

    TaskManager {
        id: taskmgr

        onUpdateProcess: {
            var index = findId(tid_);
            libraryModel.set(index, {"cmd": cmd_, "tid": tid_, "user": euid_, "system_cpu": scpu_,
                                     "user_cpu": ucpu_, "resident_memory": resident_memory_, "state": state_});
        }

        onAddProcess: {
            libraryModel.append({"cmd": cmd_, "tid": tid_, "user": euid_, "system_cpu": scpu_,
                                 "user_cpu": ucpu_, "resident_memory": resident_memory_, "state": state_});
        }

        onRemoveProcess: {
            var index = findId(tid_);
            libraryModel.remove(index);
        }

        function findId(tid) {
            for(var i = 0; i < libraryModel.count; i++) {
                if(tid == libraryModel.get(i).tid) {
                      return i;
                  }
            }
        }

        Component.onCompleted: {
            taskmgr.open(bindingAddress);
        }

        onShowProcessInfo: {
            mainTabview.getTab(0).item.updateInfo(info_);
        }

        onUpdateLoadAverage: {
            mainTabview.getTab(1).item.tempAdd(value_);
        }
    }

    ListModel {
        id: libraryModel
    }

    TabView {
        id: mainTabview
        currentIndex: 0
        anchors.fill: parent

        Tab {
            id: processesTab
            active: true
            anchors.fill: parent
            title: "Processes"

            Rectangle {
                id: procsView
                width: parent.width
                height: parent.height

                function updateInfo(info_)
                {
                    infoPopup.infoText = info_;
                }

                Row {
                    id: buttonRow
                    width: parent.width
                    anchors.top: mainTabview.top

                    RowLayout {
                        id: buttonRowLayout
                        spacing: 6

                        NewControls.Popup {
                            id: infoPopup
                            x: 200
                            y: 200
                            width: 300
                            height: 200
                            modal: true
                            focus: true
                            closePolicy: NewControls.Popup.CloseOnPressOutsideParent
                            property var infoText: "Getting extra information for process"
                            function doOpen(tid) {
                                taskmgr.getExtraInfo(tid)
                                infoPopup.open()
                            }
                            contentItem: Text {
                                text: infoPopup.infoText
                            }
                        }

                        Button {
                            id: infoButton
                            text: "Info"
                            enabled: tableView.currentRow != -1
                            onClicked: infoPopup.doOpen(libraryModel.get(tableView.currentRow).tid)
                        }

                        Button {
                            id: killButton
                            text: "Kill"
                            enabled: tableView.currentRow != -1
                            onClicked: {
                                tableView.selection.forEach( function(rowIndex) {
                                    taskmgr.kill(libraryModel.get(rowIndex).tid)}
                                )
                                tableView.selection.clear()
                            }
                        }
                    }
                }

                TableView {
                    id: tableView
                    height: parent.height - buttonRow.height
                    width: parent.width
                    anchors.top: buttonRow.bottom

                    TableViewColumn {
                        role: "cmd"
                        title: "Process"
                        width: 150
                    }
                    TableViewColumn {
                        role: "tid"
                        title: "ID"
                        width: 80
                    }
                    TableViewColumn {
                        role: "user"
                        title: "User"
                        width: 80
                    }
                    TableViewColumn {
                        role: "system_cpu"
                        title: "System %"
                        width: 100
                    }
                    TableViewColumn {
                        role: "user_cpu"
                        title: "User %"
                        width: 100
                    }
                    TableViewColumn {
                        role: "resident_memory"
                        title: "Memory"
                        width: 100
                    }
                    TableViewColumn {
                        role: "state"
                        title: "State"
                        width: 90
                    }
                    model: libraryModel
                }
            }
        }

        Tab {
            id: systemTab
            active: true
            anchors.fill: parent
            title: "System"

            ChartView {
                id: chartView
                title: "System load average"
                width: parent.width
                height: parent.height / 2
                legend.visible: false
                antialiasing: true

                LineSeries {
                    id: loadSeries

                    axisX: DateTimeAxis {
                        id: timeAxis
                        labelsVisible: false
                        format: "hh:mm"
                    }

                    axisY: ValueAxis {
                        id: valueAxis
                        max: 2
                        min: 0
                        tickCount: 3
                    }

                    XYPoint { x: new Date().getTime(); y: 0 }
                    XYPoint { x: (new Date().getTime()+ 10); y: 0 }

                }

                function tempAdd(value_)
                {
                    var time_ = new Date();

                    if (value_ > valueAxis.max)
                        valueAxis.max = value_;

                    loadSeries.append(time_.getTime(), value_);
                    timeAxis.max = time_;

                    if (loadSeries.count > 1800)
                    {
                        loadSeries.remove(0);
                        time_.setMinutes(time_.getMinutes() - 30);
                        timeAxis.min = time_;
                    }

                    chartView.update();
                }
            }
        }
    }
}