OfflineMap.qml 61.7 KB
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/****************************************************************************
 *
 *   (c) 2009-2016 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
 *
 * QGroundControl is licensed according to the terms in the file
 * COPYING.md in the root of the source code directory.
 *
 ****************************************************************************/
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import QtQuick                  2.3
import QtQuick.Controls         1.2
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import QtQuick.Controls.Styles  1.4
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import QtQuick.Dialogs          1.2
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import QtQuick.Layouts          1.2
import QtLocation               5.3
import QtPositioning            5.3
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import QGroundControl                       1.0
import QGroundControl.Controls              1.0
import QGroundControl.ScreenTools           1.0
import QGroundControl.Palette               1.0
import QGroundControl.FlightMap             1.0
import QGroundControl.QGCMapEngineManager   1.0
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import QGroundControl.FactSystem            1.0
import QGroundControl.FactControls          1.0
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QGCView {
    id:             offlineMapView
    viewPanel:      panel
    anchors.fill:   parent
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    property var    _currentSelection:  null
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    property string mapKey:             "lastMapType"
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    property Fact   _mapboxFact:        QGroundControl.settingsManager.appSettings.mapboxToken
    property Fact   _esriFact:          QGroundControl.settingsManager.appSettings.esriToken

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    property string mapType:            _settings.mapProvider.enumStringValue + " " + _settings.mapType.enumStringValue
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    property bool   isMapInteractive:   false
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    property var    savedCenter:        undefined
    property real   savedZoom:          3
    property string savedMapType:       ""
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    property bool   _showPreview:       true
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    property bool   _defaultSet:        offlineMapView && offlineMapView._currentSelection && offlineMapView._currentSelection.defaultSet
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    property real   _margins:           ScreenTools.defaultFontPixelWidth * 0.5
    property real   _buttonSize:        ScreenTools.defaultFontPixelWidth * 12
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    property real   _bigButtonSize:     ScreenTools.defaultFontPixelWidth * 16
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    property bool   _saveRealEstate:          ScreenTools.isTinyScreen || ScreenTools.isShortScreen
    property real   _adjustableFontPointSize: _saveRealEstate ? ScreenTools.smallFontPointSize : ScreenTools.defaultFontPointSize
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    property var    _mapAdjustedColor:  _map.isSatelliteMap ? "white" : "black"
    property bool   _tooManyTiles:      QGroundControl.mapEngineManager.tileCount > _maxTilesForDownload
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    property var    _settings:          QGroundControl.settingsManager.flightMapSettings
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    readonly property real minZoomLevel:    1
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    readonly property real maxZoomLevel:    20
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    readonly property real sliderTouchArea: ScreenTools.defaultFontPixelWidth * (ScreenTools.isTinyScreen ? 5 : (ScreenTools.isMobile ? 6 : 3))
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    readonly property int _maxTilesForDownload: 100000
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    QGCPalette { id: qgcPal }
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    Component.onCompleted: {
        QGroundControl.mapEngineManager.loadTileSets()
        updateMap()
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        savedCenter = _map.toCoordinate(Qt.point(_map.width / 2, _map.height / 2), false /* clipToViewPort */)
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    }

    Connections {
        target: QGroundControl.mapEngineManager
        onTileSetsChanged: {
            setName.text = QGroundControl.mapEngineManager.getUniqueName()
        }
        onErrorMessageChanged: {
            errorDialog.visible = true
        }
    }

    ExclusiveGroup { id: setGroup }

    function handleChanges() {
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        if(isMapInteractive) {
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            var xl = 0
            var yl = 0
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            var xr = _map.width.toFixed(0) - 1  // Must be within boundaries of visible map
            var yr = _map.height.toFixed(0) - 1 // Must be within boundaries of visible map
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            var c0 = _map.toCoordinate(Qt.point(xl, yl), false /* clipToViewPort */)
            var c1 = _map.toCoordinate(Qt.point(xr, yr), false /* clipToViewPort */)
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            QGroundControl.mapEngineManager.updateForCurrentView(c0.longitude, c0.latitude, c1.longitude, c1.latitude, sliderMinZoom.value, sliderMaxZoom.value, mapType)
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        }
    }

    function updateMap() {
        for (var i = 0; i < _map.supportedMapTypes.length; i++) {
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            //console.log(_map.supportedMapTypes[i].name)
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            if (mapType === _map.supportedMapTypes[i].name) {
                _map.activeMapType = _map.supportedMapTypes[i]
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                //console.log("Update Map:" + " " + _map.activeMapType)
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                handleChanges()
                return
            }
        }
    }

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    function addNewSet() {
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        isMapInteractive = true
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        mapType = _settings.mapProvider.enumStringValue + " " + _settings.mapType.enumStringValue
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        resetMapToDefaults()
        handleChanges()
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        _map.visible = true
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        _tileSetList.visible = false
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        infoView.visible = false
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        _exporTiles.visible = false
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        addNewSetView.visible = true
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    }

    function showList() {
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        _exporTiles.visible = false
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        isMapInteractive = false
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        _map.visible = false
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        _tileSetList.visible = true
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        infoView.visible = false
        addNewSetView.visible = false
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        QGroundControl.mapEngineManager.resetAction();
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    }

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    function showExport() {
        isMapInteractive = false
        _map.visible = false
        _tileSetList.visible = false
        infoView.visible = false
        addNewSetView.visible = false
        _exporTiles.visible = true
    }

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    function showInfo() {
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        isMapInteractive = false
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        if(_currentSelection && !offlineMapView._currentSelection.deleting) {
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            enterInfoView()
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        } else
            showList()
    }

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    function toRadian(deg) {
        return deg * Math.PI / 180
    }

    function toDegree(rad) {
        return rad * 180 / Math.PI
    }

    function midPoint(lat1, lat2, lon1, lon2) {
        var dLon = toRadian(lon2 - lon1);
        lat1 = toRadian(lat1);
        lat2 = toRadian(lat2);
        lon1 = toRadian(lon1);
        var Bx = Math.cos(lat2) * Math.cos(dLon);
        var By = Math.cos(lat2) * Math.sin(dLon);
        var lat3 = Math.atan2(Math.sin(lat1) + Math.sin(lat2), Math.sqrt((Math.cos(lat1) + Bx) * (Math.cos(lat1) + Bx) + By * By));
        var lon3 = lon1 + Math.atan2(By, Math.cos(lat1) + Bx);
        return QtPositioning.coordinate(toDegree(lat3), toDegree(lon3))
    }

    function enterInfoView() {
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        _map.visible = true
        isMapInteractive = false
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        savedCenter = _map.toCoordinate(Qt.point(_map.width / 2, _map.height / 2), false /* clipToViewPort */)
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        savedZoom = _map.zoomLevel
        savedMapType = mapType
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        if(!offlineMapView._currentSelection.defaultSet) {
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            mapType = offlineMapView._currentSelection.mapTypeStr
            _map.center = midPoint(offlineMapView._currentSelection.topleftLat, offlineMapView._currentSelection.bottomRightLat, offlineMapView._currentSelection.topleftLon, offlineMapView._currentSelection.bottomRightLon)
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            //-- Delineate Set Region
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            var x0 = offlineMapView._currentSelection.topleftLon
            var x1 = offlineMapView._currentSelection.bottomRightLon
            var y0 = offlineMapView._currentSelection.topleftLat
            var y1 = offlineMapView._currentSelection.bottomRightLat
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            mapBoundary.topLeft     = QtPositioning.coordinate(y0, x0)
            mapBoundary.bottomRight = QtPositioning.coordinate(y1, x1)
            mapBoundary.visible = true
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            // Some times, for whatever reason, the bounding box is correct (around ETH for instance), but the rectangle is drawn across the planet.
            // When that happens, the "_map.fitViewportToMapItems()" below makes the map to zoom to the entire earth.
            //console.log("Map boundary: " + mapBoundary.topLeft + " " + mapBoundary.bottomRight)
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            _map.fitViewportToMapItems()
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        }
        _tileSetList.visible = false
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        addNewSetView.visible = false
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        infoView.visible = true
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    }

    function leaveInfoView() {
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        mapBoundary.visible = false
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        _map.center = savedCenter
        _map.zoomLevel = savedZoom
        mapType = savedMapType
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    }

    function resetMapToDefaults() {
        _map.center = QGroundControl.flightMapPosition
        _map.zoomLevel = QGroundControl.flightMapZoom
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    }

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    ExclusiveGroup {
        id: _dropButtonsExclusiveGroup
    }

    onMapTypeChanged: {
        updateMap()
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        if(isMapInteractive) {
            QGroundControl.mapEngineManager.saveSetting(mapKey, mapType)
        }
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    }

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    QGCFileDialog {
        id:             fileDialog
        qgcView:        offlineMapView
        folder:         QGroundControl.settingsManager.appSettings.missionSavePath
        nameFilters:    ["Tile Sets (*.qgctiledb)"]
        fileExtension:  "qgctiledb"

        onAcceptedForSave: {
            if (QGroundControl.mapEngineManager.exportSets(file)) {
                rootLoader.sourceComponent = exportToDiskProgress
            } else {
                showList()
            }
            close()
        }

        onAcceptedForLoad: {
            if(!QGroundControl.mapEngineManager.importSets(file)) {
                showList();
                mainWindow.enableToolbar()
            }
            close()
        }
    }

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    MessageDialog {
        id:         errorDialog
        visible:    false
        text:       QGroundControl.mapEngineManager.errorMessage
        icon:       StandardIcon.Critical
        standardButtons: StandardButton.Ok
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        title:      qsTr("Error Message")
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        onYes: {
            errorDialog.visible = false
        }
    }
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    Component {
        id: optionsDialogComponent

        QGCViewDialog {
            id: optionDialog

            function accept() {
                QGroundControl.mapEngineManager.maxDiskCache = parseInt(maxCacheSize.text)
                QGroundControl.mapEngineManager.maxMemCache  = parseInt(maxCacheMemSize.text)
                optionDialog.hideDialog()
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            }
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            QGCFlickable {
                anchors.fill:   parent
                contentHeight:  optionsColumn.height
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                Column {
                    id:                 optionsColumn
                    anchors.margins:    ScreenTools.defaultFontPixelWidth
                    anchors.left:       parent.left
                    anchors.right:      parent.right
                    anchors.top:        parent.top
                    spacing:            ScreenTools.defaultFontPixelHeight / 2
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                    QGCLabel { text:       qsTr("Max Cache Disk Size (MB):") }
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                    QGCTextField {
                        id:                 maxCacheSize
                        maximumLength:      6
                        inputMethodHints:   Qt.ImhDigitsOnly
                        validator:          IntValidator {bottom: 1; top: 262144;}
                        text:               QGroundControl.mapEngineManager.maxDiskCache
                    }
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                    Item { width: 1; height: 1 }

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                    QGCLabel {
                        anchors.left:   parent.left
                        anchors.right:  parent.right
                        wrapMode:       Text.WordWrap
                        text:           qsTr("Max Cache Memory Size (MB):")
                    }
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                    QGCTextField {
                        id:                 maxCacheMemSize
                        maximumLength:      4
                        inputMethodHints:   Qt.ImhDigitsOnly
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                        validator:          IntValidator {bottom: 1; top: 1024;}
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                        text:               QGroundControl.mapEngineManager.maxMemCache
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                    }
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                    QGCLabel {
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                        anchors.left:   parent.left
                        anchors.right:  parent.right
                        wrapMode:       Text.WordWrap
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                        font.pointSize: _adjustableFontPointSize
                        text:           qsTr("Memory cache changes require a restart to take effect.")
                    }

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                    Item { width: 1; height: 1; visible: _mapboxFact ? _mapboxFact.visible : false }
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                    QGCLabel { text: qsTr("Mapbox Access Token"); visible: _mapboxFact ? _mapboxFact.visible : false }
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                    FactTextField {
                        fact:               _mapboxFact
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                        visible:            _mapboxFact ? _mapboxFact.visible : false
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                        maximumLength:      256
                        width:              ScreenTools.defaultFontPixelWidth * 30
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                    }
                    QGCLabel {
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                        anchors.left:   parent.left
                        anchors.right:  parent.right
                        wrapMode:       Text.WordWrap
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                        text:           qsTr("To enable Mapbox maps, enter your access token.")
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                        visible:        _mapboxFact ? _mapboxFact.visible : false
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                        font.pointSize: _adjustableFontPointSize
                    }
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                    Item { width: 1; height: 1; visible: _esriFact ? _esriFact.visible : false }
                    QGCLabel { text: qsTr("Esri Access Token"); visible: _esriFact ? _esriFact.visible : false }
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                    FactTextField {
                        fact:               _esriFact
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                        visible:            _esriFact ? _esriFact.visible : false
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                        maximumLength:      256
                        width:              ScreenTools.defaultFontPixelWidth * 30
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                    }
                    QGCLabel {
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                        anchors.left:   parent.left
                        anchors.right:  parent.right
                        wrapMode:       Text.WordWrap
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                        text:           qsTr("To enable Esri maps, enter your access token.")
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                        visible:        _esriFact ? _esriFact.visible : false
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                        font.pointSize: _adjustableFontPointSize
                    }
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                } // GridLayout
            } // QGCFlickable
        } // QGCViewDialog - optionsDialog
    } // Component - optionsDialogComponent

    Component {
        id: deleteConfirmationDialogComponent
        QGCViewMessage {
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            id:  deleteConfirmationDialog
            message: {
                if(offlineMapView._currentSelection.defaultSet)
                    return qsTr("This will delete all tiles INCLUDING the tile sets you have created yourself.\n\nIs this really what you want?");
                else
                    return qsTr("Delete %1 and all its tiles.\n\nIs this really what you want?").arg(offlineMapView._currentSelection.name);
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            }
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            function accept() {
                QGroundControl.mapEngineManager.deleteTileSet(offlineMapView._currentSelection)
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                deleteConfirmationDialog.hideDialog()
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                leaveInfoView()
                showList()
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            }
        }
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    }

    QGCViewPanel {
        id:                 panel
        anchors.fill:       parent

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        FlightMap {
            id:                         _map
            anchors.fill:               parent
            visible:                    false
            allowGCSLocationCenter:     true
            allowVehicleLocationCenter: false
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            gesture.flickDeceleration:  3000
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            mapName:                    "OfflineMap"
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            qgcView:                    offlineMapView
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            property bool isSatelliteMap: activeMapType.name.indexOf("Satellite") > -1 || activeMapType.name.indexOf("Hybrid") > -1

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            MapRectangle {
                id:             mapBoundary
                border.width:   2
                border.color:   "red"
                color:          Qt.rgba(1,0,0,0.05)
                smooth:         true
                antialiasing:   true
            }

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            Component.onCompleted: resetMapToDefaults()
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            onCenterChanged:    handleChanges()
            onZoomLevelChanged: handleChanges()
            onWidthChanged:     handleChanges()
            onHeightChanged:    handleChanges()

            // Used to make pinch zoom work
            MouseArea {
                anchors.fill: parent
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            }
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            MapScale {
                anchors.leftMargin:     ScreenTools.defaultFontPixelWidth / 2
                anchors.bottomMargin:   anchors.leftMargin
                anchors.left:           parent.left
                anchors.bottom:         parent.bottom
                mapControl:             _map
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            }
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            //-----------------------------------------------------------------
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            //-- Show Set Info
            Rectangle {
                id:                 infoView
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                anchors.margins:    ScreenTools.defaultFontPixelHeight
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                anchors.right:      parent.right
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                anchors.verticalCenter: parent.verticalCenter
                width:              tileInfoColumn.width  + (ScreenTools.defaultFontPixelWidth  * 2)
                height:             tileInfoColumn.height + (ScreenTools.defaultFontPixelHeight * 2)
                color:              Qt.rgba(qgcPal.window.r, qgcPal.window.g, qgcPal.window.b, 0.85)
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                radius:             ScreenTools.defaultFontPixelWidth * 0.5
                visible:            false
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                property bool       _extraButton: {
                    if(!offlineMapView._currentSelection)
                        return false;
                    var curSel = offlineMapView._currentSelection;
                    return !_defaultSet && ((!curSel.complete && !curSel.downloading) || (!curSel.complete && curSel.downloading));
                }

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                property real       _labelWidth:    ScreenTools.defaultFontPixelWidth * 10
                property real       _valueWidth:    ScreenTools.defaultFontPixelWidth * 14
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                Column {
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                    id:                 tileInfoColumn
                    anchors.margins:    ScreenTools.defaultFontPixelHeight * 0.5
                    spacing:            ScreenTools.defaultFontPixelHeight * 0.5
                    anchors.centerIn:   parent
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                    QGCLabel {
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                        anchors.left:   parent.left
                        anchors.right:  parent.right
                        wrapMode:       Text.WordWrap
                        text:           offlineMapView._currentSelection ? offlineMapView._currentSelection.name : ""
                        font.pointSize: _saveRealEstate ? ScreenTools.defaultFontPointSize : ScreenTools.mediumFontPointSize
                        horizontalAlignment: Text.AlignHCenter
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                        visible:        _defaultSet
                    }
                    QGCTextField {
                        id:             editSetName
                        anchors.left:   parent.left
                        anchors.right:  parent.right
                        visible:        !_defaultSet
                        text:           offlineMapView._currentSelection ? offlineMapView._currentSelection.name : ""
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                    }
                    QGCLabel {
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                        anchors.left:   parent.left
                        anchors.right:  parent.right
                        wrapMode:       Text.WordWrap
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                        text: {
                            if(offlineMapView._currentSelection) {
                                if(offlineMapView._currentSelection.defaultSet)
                                    return qsTr("System Wide Tile Cache");
                                else
                                    return "(" + offlineMapView._currentSelection.mapTypeStr + ")"
                            } else
                                return "";
                        }
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                        horizontalAlignment: Text.AlignHCenter
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                    }
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                    //-- Tile Sets
                    Row {
                        spacing:    ScreenTools.defaultFontPixelWidth
                        anchors.horizontalCenter: parent.horizontalCenter
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                        visible:    !_defaultSet && mapType !== "Airmap Elevation Data"
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                        QGCLabel {  text: qsTr("Zoom Levels:"); width: infoView._labelWidth; }
                        QGCLabel {  text: offlineMapView._currentSelection ? (offlineMapView._currentSelection.minZoom + " - " + offlineMapView._currentSelection.maxZoom) : ""; horizontalAlignment: Text.AlignRight; width: infoView._valueWidth; }
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                    }
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                    Row {
                        spacing:    ScreenTools.defaultFontPixelWidth
                        anchors.horizontalCenter: parent.horizontalCenter
                        visible:    !_defaultSet
                        QGCLabel {  text: qsTr("Total:"); width: infoView._labelWidth; }
                        QGCLabel {  text: (offlineMapView._currentSelection ? offlineMapView._currentSelection.totalTileCountStr : "") + " (" + (offlineMapView._currentSelection ? offlineMapView._currentSelection.totalTilesSizeStr : "") + ")"; horizontalAlignment: Text.AlignRight; width: infoView._valueWidth; }
                    }
                    Row {
                        spacing:    ScreenTools.defaultFontPixelWidth
                        anchors.horizontalCenter: parent.horizontalCenter
                        visible:    offlineMapView && offlineMapView._currentSelection && !_defaultSet && offlineMapView._currentSelection.uniqueTileCount > 0
                        QGCLabel {  text: qsTr("Unique:"); width: infoView._labelWidth; }
                        QGCLabel {  text: (offlineMapView._currentSelection ? offlineMapView._currentSelection.uniqueTileCountStr : "") + " (" + (offlineMapView._currentSelection ? offlineMapView._currentSelection.uniqueTileSizeStr : "") + ")"; horizontalAlignment: Text.AlignRight; width: infoView._valueWidth; }
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                    }
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                    Row {
                        spacing:    ScreenTools.defaultFontPixelWidth
                        anchors.horizontalCenter: parent.horizontalCenter
                        visible:    offlineMapView && offlineMapView._currentSelection && !_defaultSet && !offlineMapView._currentSelection.complete
                        QGCLabel {  text: qsTr("Downloaded:"); width: infoView._labelWidth; }
                        QGCLabel {  text: (offlineMapView._currentSelection ? offlineMapView._currentSelection.savedTileCountStr : "") + " (" + (offlineMapView._currentSelection ? offlineMapView._currentSelection.savedTileSizeStr : "") + ")"; horizontalAlignment: Text.AlignRight; width: infoView._valueWidth; }
                    }
                    Row {
                        spacing:    ScreenTools.defaultFontPixelWidth
                        anchors.horizontalCenter: parent.horizontalCenter
                        visible:    offlineMapView && offlineMapView._currentSelection && !_defaultSet && !offlineMapView._currentSelection.complete && offlineMapView._currentSelection.errorCount > 0
                        QGCLabel {  text: qsTr("Error Count:"); width: infoView._labelWidth; }
                        QGCLabel {  text: offlineMapView._currentSelection ? offlineMapView._currentSelection.errorCountStr : ""; horizontalAlignment: Text.AlignRight; width: infoView._valueWidth; }
                    }
                    //-- Default Tile Set
                    Row {
                        spacing:    ScreenTools.defaultFontPixelWidth
                        anchors.horizontalCenter: parent.horizontalCenter
                        visible:    _defaultSet
                        QGCLabel { text: qsTr("Size:"); width: infoView._labelWidth; }
                        QGCLabel { text: offlineMapView._currentSelection ? offlineMapView._currentSelection.savedTileSizeStr  : ""; horizontalAlignment: Text.AlignRight; width: infoView._valueWidth; }
                    }
                    Row {
                        spacing:    ScreenTools.defaultFontPixelWidth
                        anchors.horizontalCenter: parent.horizontalCenter
                        visible:    _defaultSet
                        QGCLabel { text: qsTr("Tile Count:"); width: infoView._labelWidth; }
                        QGCLabel { text: offlineMapView._currentSelection ? offlineMapView._currentSelection.savedTileCountStr : ""; horizontalAlignment: Text.AlignRight; width: infoView._valueWidth; }
                    }
                    Row {
                        spacing:    ScreenTools.defaultFontPixelWidth
                        anchors.horizontalCenter: parent.horizontalCenter
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                        QGCButton {
                            text:       qsTr("Resume Download")
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                            visible:    offlineMapView._currentSelection && offlineMapView._currentSelection && !_defaultSet && (!offlineMapView._currentSelection.complete && !offlineMapView._currentSelection.downloading)
                            width:      ScreenTools.defaultFontPixelWidth * 16
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                            onClicked: {
                                if(offlineMapView._currentSelection)
                                    offlineMapView._currentSelection.resumeDownloadTask()
                            }
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                        }
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                        QGCButton {
                            text:       qsTr("Cancel Download")
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                            visible:    offlineMapView._currentSelection && offlineMapView._currentSelection && !_defaultSet && (!offlineMapView._currentSelection.complete && offlineMapView._currentSelection.downloading)
                            width:      ScreenTools.defaultFontPixelWidth * 16
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                            onClicked: {
                                if(offlineMapView._currentSelection)
                                    offlineMapView._currentSelection.cancelDownloadTask()
                            }
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                        }
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                        QGCButton {
                            text:       qsTr("Delete")
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                            width:      ScreenTools.defaultFontPixelWidth * (infoView._extraButton ? 6 : 10)
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                            onClicked:  showDialog(deleteConfirmationDialogComponent, qsTr("Confirm Delete"), qgcView.showDialogDefaultWidth, StandardButton.Yes | StandardButton.No)
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                        }
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                        QGCButton {
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                            text:       qsTr("Ok")
                            width:      ScreenTools.defaultFontPixelWidth * (infoView._extraButton ? 6 : 10)
                            visible:    !_defaultSet
                            enabled:    editSetName.text !== ""
                            onClicked: {
                                if(editSetName.text !== _currentSelection.name) {
                                    QGroundControl.mapEngineManager.renameTileSet(_currentSelection, editSetName.text)
                                }
                                leaveInfoView()
                                showList()
                            }
                        }
                        QGCButton {
                            text:       _defaultSet ? qsTr("Close") : qsTr("Cancel")
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                            width:      ScreenTools.defaultFontPixelWidth * (infoView._extraButton ? 6 : 10)
                            onClicked: {
                                leaveInfoView()
                                showList()
                            }
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                        }
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                    }
                }
            } // Rectangle - infoView
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            //-----------------------------------------------------------------
            //-- Add new set
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            Item {
                id:             addNewSetView
                anchors.fill:   parent
                visible:        false
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                Column {
                    anchors.verticalCenter: parent.verticalCenter
                    anchors.leftMargin:     _margins
                    anchors.left:           parent.left
                    spacing:                _margins

                    QGCButton {
                        text:       "Show zoom previews"
                        visible:    !_showPreview
                        onClicked:  _showPreview = !_showPreview
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                    }
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                    Map {
                        id:                 minZoomPreview
                        width:              addNewSetView.width / 4
                        height:             addNewSetView.height / 4
                        center:             _map.center
                        activeMapType:      _map.activeMapType
                        zoomLevel:          sliderMinZoom.value
                        gesture.enabled:    false
                        visible:            _showPreview

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                        property bool isSatelliteMap: activeMapType.name.indexOf("Satellite") > -1 || activeMapType.name.indexOf("Hybrid") > -1

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                        plugin: Plugin { name: "QGroundControl" }

                        MapScale {
                            anchors.leftMargin:     ScreenTools.defaultFontPixelWidth / 2
                            anchors.bottomMargin:   anchors.leftMargin
                            anchors.left:           parent.left
                            anchors.bottom:         parent.bottom
                            mapControl:             parent
                        }
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                        Rectangle {
                            anchors.fill:   parent
                            border.color:   _mapAdjustedColor
                            color:          "transparent"
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                            QGCMapLabel {
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                                anchors.centerIn:   parent
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                                map:                minZoomPreview
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                                text:               qsTr("Min Zoom: %1").arg(sliderMinZoom.value)
                            }
                            MouseArea {
                                anchors.fill:   parent
                                onClicked:      _showPreview = false
                            }
                        }
                    } // Map

                    Map {
                        id:                 maxZoomPreview
                        width:              minZoomPreview.width
                        height:             minZoomPreview.height
                        center:             _map.center
                        activeMapType:      _map.activeMapType
                        zoomLevel:          sliderMaxZoom.value
                        gesture.enabled:    false
                        visible:            _showPreview

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                        property bool isSatelliteMap: activeMapType.name.indexOf("Satellite") > -1 || activeMapType.name.indexOf("Hybrid") > -1

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                        plugin: Plugin { name: "QGroundControl" }

                        MapScale {
                            anchors.leftMargin:     ScreenTools.defaultFontPixelWidth / 2
                            anchors.bottomMargin:   anchors.leftMargin
                            anchors.left:           parent.left
                            anchors.bottom:         parent.bottom
                            mapControl:             parent
                        }

                        Rectangle {
                            anchors.fill:   parent
                            border.color:   _mapAdjustedColor
                            color:          "transparent"
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                            QGCMapLabel {
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                                anchors.centerIn:   parent
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                                map:                maxZoomPreview
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                                text:               qsTr("Max Zoom: %1").arg(sliderMaxZoom.value)
                            }
                            MouseArea {
                                anchors.fill:   parent
                                onClicked:      _showPreview = false
                            }
                        }
                    } // Map
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                }
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            } // Item - Add new set view
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            CenterMapDropButton {
                topMargin:          0
                anchors.margins:    _margins
                anchors.left:       map.left
                anchors.top:        map.top
                map:                _map
                showMission:        false
                showAllItems:       false
                visible:            addNewSetView.visible
            }
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        } // Map
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        //-- Add new set dialog
        Rectangle {
            anchors.margins:    ScreenTools.defaultFontPixelWidth
            anchors.verticalCenter: parent.verticalCenter
            anchors.right:      parent.right
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            visible:            addNewSetView.visible
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            width:              ScreenTools.defaultFontPixelWidth * (ScreenTools.isTinyScreen ? 24 : 28)
            height:             Math.min(parent.height - (anchors.margins * 2), addNewSetFlickable.y + addNewSetColumn.height + addNewSetLabel.anchors.margins)
            color:              Qt.rgba(qgcPal.window.r, qgcPal.window.g, qgcPal.window.b, 0.85)
            radius:             ScreenTools.defaultFontPixelWidth * 0.5

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            //-- Eat mouse events
            DeadMouseArea {
                anchors.fill: parent
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            }

            QGCLabel {
                id:                 addNewSetLabel
                anchors.margins:    ScreenTools.defaultFontPixelHeight / 2
                anchors.top:        parent.top
                anchors.left:       parent.left
                anchors.right:      parent.right
                wrapMode:           Text.WordWrap
                text:               qsTr("Add New Set")
                font.pointSize:     _saveRealEstate ? ScreenTools.defaultFontPointSize : ScreenTools.mediumFontPointSize
                horizontalAlignment: Text.AlignHCenter
            }

            QGCFlickable {
                id:                     addNewSetFlickable
                anchors.leftMargin:     ScreenTools.defaultFontPixelWidth
                anchors.rightMargin:    anchors.leftMargin
                anchors.topMargin:      ScreenTools.defaultFontPixelWidth / 3
                anchors.bottomMargin:   anchors.topMargin
                anchors.top:            addNewSetLabel.bottom
                anchors.left:           parent.left
                anchors.right:          parent.right
                anchors.bottom:         parent.bottom
                clip:                   true
                contentHeight:          addNewSetColumn.height

                Column {
                    id:                 addNewSetColumn
                    anchors.left:       parent.left
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                    anchors.right:      parent.right
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                    spacing:            ScreenTools.defaultFontPixelHeight * (ScreenTools.isTinyScreen ? 0.25 : 0.5)
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                    Column {
                        spacing:            ScreenTools.isTinyScreen ? 0 : ScreenTools.defaultFontPixelHeight * 0.25
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                        anchors.left:       parent.left
                        anchors.right:      parent.right
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                        QGCLabel { text: qsTr("Name:") }
                        QGCTextField {
                            id:             setName
                            anchors.left:   parent.left
                            anchors.right:  parent.right
                        }
                    }

                    Column {
                        spacing:            ScreenTools.isTinyScreen ? 0 : ScreenTools.defaultFontPixelHeight * 0.25
                        anchors.left:       parent.left
                        anchors.right:      parent.right
                        QGCLabel {
                            text:       qsTr("Map type:")
                            visible:    !_saveRealEstate
                        }
                        QGCComboBox {
                            id:             mapCombo
                            anchors.left:   parent.left
                            anchors.right:  parent.right
                            model:          QGroundControl.mapEngineManager.mapList
                            onActivated: {
                                mapType = textAt(index)
                                if(_dropButtonsExclusiveGroup.current)
                                    _dropButtonsExclusiveGroup.current.checked = false
                                _dropButtonsExclusiveGroup.current = null
                            }
                            Component.onCompleted: {
                                var index = mapCombo.find(mapType)
                                if (index === -1) {
                                    console.warn("Active map name not in combo", mapType)
                                } else {
                                    mapCombo.currentIndex = index
                                }
                            }
                        }
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                        QGCCheckBox {
                            anchors.left:   parent.left
                            anchors.right:  parent.right
                            text:           qsTr("Fetch elevation data")
                            checked:        QGroundControl.mapEngineManager.fetchElevation
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                            onClicked: {
                                QGroundControl.mapEngineManager.fetchElevation = checked
                                handleChanges()
                            }
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                        }
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                    }
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                    Rectangle {
                        anchors.left:   parent.left
                        anchors.right:  parent.right
                        height:         zoomColumn.height + ScreenTools.defaultFontPixelHeight * 0.5
                        color:          qgcPal.window
                        border.color:   qgcPal.text
                        radius:         ScreenTools.defaultFontPixelWidth * 0.5
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                        Column {
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                            id:                 zoomColumn
                            spacing:            ScreenTools.isTinyScreen ? 0 : ScreenTools.defaultFontPixelHeight * 0.5
                            anchors.margins:    ScreenTools.defaultFontPixelHeight * 0.25
                            anchors.top:        parent.top
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                            anchors.left:       parent.left
                            anchors.right:      parent.right
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                            QGCLabel {
                                text:           qsTr("Min/Max Zoom Levels")
                                font.pointSize: _adjustableFontPointSize
                                anchors.horizontalCenter: parent.horizontalCenter
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                            }
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                            Slider {
                                id:                         sliderMinZoom
                                anchors.left:               parent.left
                                anchors.right:              parent.right
                                height:                     sliderTouchArea * 1.25
                                minimumValue:               minZoomLevel
                                maximumValue:               maxZoomLevel
                                stepSize:                   1
                                updateValueWhileDragging:   true
                                property real _savedZoom
                                Component.onCompleted:      Math.max(sliderMinZoom.value = _map.zoomLevel - 4, 2)
                                onValueChanged: {
                                    if(sliderMinZoom.value > sliderMaxZoom.value) {
                                        sliderMaxZoom.value = sliderMinZoom.value
                                    }
                                    handleChanges()
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                                }
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                                style: SliderStyle {
                                    groove: Rectangle {
                                        implicitWidth:  sliderMinZoom.width
                                        implicitHeight: 4
                                        color:          qgcPal.colorBlue
                                        radius:         4
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                                    }
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                                    handle: Rectangle {
                                        anchors.centerIn: parent
                                        color:          qgcPal.button
                                        border.color:   qgcPal.buttonText
                                        border.width:   1
                                        implicitWidth:  sliderTouchArea
                                        implicitHeight: sliderTouchArea
                                        radius:         sliderTouchArea * 0.5
                                        Label {
                                            text:               sliderMinZoom.value
                                            anchors.centerIn:   parent
                                            font.family:        ScreenTools.normalFontFamily
                                            font.pointSize:     ScreenTools.smallFontPointSize
                                            color:              qgcPal.buttonText
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                                        }
                                    }
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                                }
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                            } // Slider - min zoom

                            Slider {
                                id:                         sliderMaxZoom
                                anchors.left:               parent.left
                                anchors.right:              parent.right
                                height:                     sliderTouchArea * 1.25
                                minimumValue:               minZoomLevel
                                maximumValue:               maxZoomLevel
                                stepSize:                   1
                                updateValueWhileDragging:   true
                                property real _savedZoom
                                Component.onCompleted:      Math.min(sliderMaxZoom.value = _map.zoomLevel + 2, 20)
                                onValueChanged: {
                                    if(sliderMaxZoom.value < sliderMinZoom.value) {
                                        sliderMinZoom.value = sliderMaxZoom.value
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                                    }
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                                    handleChanges()
                                }
                                style: SliderStyle {
                                    groove: Rectangle {
                                        implicitWidth:  sliderMaxZoom.width
                                        implicitHeight: 4
                                        color:          qgcPal.colorBlue
                                        radius:         4
                                    }
                                    handle: Rectangle {
                                        anchors.centerIn: parent
                                        color:          qgcPal.button
                                        border.color:   qgcPal.buttonText
                                        border.width:   1
                                        implicitWidth:  sliderTouchArea
                                        implicitHeight: sliderTouchArea
                                        radius:         sliderTouchArea * 0.5
                                        Label {
                                            text:               sliderMaxZoom.value
                                            anchors.centerIn:   parent
                                            font.family:        ScreenTools.normalFontFamily
                                            font.pointSize:     ScreenTools.smallFontPointSize
                                            color:              qgcPal.buttonText
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                                        }
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                                    }
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                                }
                            } // Slider - max zoom
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                            GridLayout {
                                columns:    2
                                rowSpacing: ScreenTools.isTinyScreen ? 0 : ScreenTools.defaultFontPixelHeight * 0.5
                                QGCLabel {
                                    text:           qsTr("Tile Count:")
                                    font.pointSize: _adjustableFontPointSize
                                }
                                QGCLabel {
                                    text:            QGroundControl.mapEngineManager.tileCountStr
                                    font.pointSize: _adjustableFontPointSize
                                }
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                                QGCLabel {
                                    text:           qsTr("Est Size:")
                                    font.pointSize: _adjustableFontPointSize
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                                }
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                                QGCLabel {
                                    text:           QGroundControl.mapEngineManager.tileSizeStr
                                    font.pointSize: _adjustableFontPointSize
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                                }
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                            }
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                        } // Column - Zoom info
                    } // Rectangle - Zoom info
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                    QGCLabel {
                        text:       qsTr("Too many tiles")
                        visible:    _tooManyTiles
                        color:      qgcPal.warningText
                        anchors.horizontalCenter: parent.horizontalCenter
                    }

                    Row {
                        id: addButtonRow
                        spacing: ScreenTools.defaultFontPixelWidth
                        anchors.horizontalCenter: parent.horizontalCenter
                        QGCButton {
                            text:       qsTr("Download")
                            width:      (addNewSetColumn.width * 0.5) - (addButtonRow.spacing * 0.5)
                            enabled:    !_tooManyTiles && setName.text.length > 0
                            onClicked: {
                                if(QGroundControl.mapEngineManager.findName(setName.text)) {
                                    duplicateName.visible = true
                                } else {
                                    QGroundControl.mapEngineManager.startDownload(setName.text, mapType);
                                    showList()
                                }
                            }
                        }
                        QGCButton {
                            text:       qsTr("Cancel")
                            width:      (addNewSetColumn.width * 0.5) - (addButtonRow.spacing * 0.5)
                            onClicked: {
                                showList()
                            }
                        }
                    }

                } // Column
            } // QGCFlickable
        } // Rectangle - Add new set dialog
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        QGCFlickable {
            id:                 _tileSetList
            clip:               true
            anchors.margins:    ScreenTools.defaultFontPixelWidth
            anchors.top:        parent.top
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            anchors.bottom:     _listButtonRow.top
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            anchors.left:       parent.left
            anchors.right:      parent.right
            contentHeight:      _cacheList.height

            Column {
                id:         _cacheList
                width:      Math.min(_tileSetList.width, (ScreenTools.defaultFontPixelWidth  * 50).toFixed(0))
                spacing:    ScreenTools.defaultFontPixelHeight * 0.5
                anchors.horizontalCenter: parent.horizontalCenter
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                ExclusiveGroup { id: selectionGroup }
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                OfflineMapButton {
                    id:             firstButton
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                    text:           qsTr("Add New Set")
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                    width:          _cacheList.width
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                    height:         ScreenTools.defaultFontPixelHeight * (ScreenTools.isMobile ? 3 : 2)
                    currentSet:     _currentSelection
                    exclusiveGroup: selectionGroup
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                    onClicked: {
                        offlineMapView._currentSelection = null
                        addNewSet()
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                    }
                }
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                Repeater {
                    model: QGroundControl.mapEngineManager.tileSets
                    delegate: OfflineMapButton {
                        text:           object.name
                        size:           object.downloadStatus
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                        tiles:          object.totalTileCount
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                        complete:       object.complete
                        width:          firstButton.width
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                        height:         ScreenTools.defaultFontPixelHeight * (ScreenTools.isMobile ? 3 : 2)
                        exclusiveGroup: selectionGroup
                        currentSet:     _currentSelection
                        tileSet:        object
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                        onClicked: {
                            offlineMapView._currentSelection = object
                            showInfo()
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                        }
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                    }
                }
            }
        }
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        Row {
            id:                 _listButtonRow
            visible:            _tileSetList.visible
            spacing:            _margins
            anchors.bottom:     parent.bottom
            anchors.margins:    ScreenTools.defaultFontPixelWidth
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            anchors.horizontalCenter: parent.horizontalCenter
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            QGCButton {
                text:           qsTr("Import")
                width:          _buttonSize
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                visible:        QGroundControl.corePlugin.options.showOfflineMapImport
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                onClicked: {
                    QGroundControl.mapEngineManager.importAction = QGCMapEngineManager.ActionNone
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                    rootLoader.sourceComponent = importDialog
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                }
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            }
            QGCButton {
                text:           qsTr("Export")
                width:          _buttonSize
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                visible:        QGroundControl.corePlugin.options.showOfflineMapExport
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                onClicked:      showExport()
            }
            QGCButton {
                text:           qsTr("Options")
                width:          _buttonSize
                onClicked:      showDialog(optionsDialogComponent, qsTr("Offline Maps Options"), qgcView.showDialogDefaultWidth, StandardButton.Save | StandardButton.Cancel)
            }
        }
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        //-- Export Tile Sets
        QGCFlickable {
            id:                 _exporTiles
            clip:               true
            visible:            false
            anchors.margins:    ScreenTools.defaultFontPixelWidth
            anchors.top:        parent.top
            anchors.bottom:     _exportButtonRow.top
            anchors.left:       parent.left
            anchors.right:      parent.right
            contentHeight:      _exportList.height
            Column {
                id:         _exportList
                width:      Math.min(_exporTiles.width, (ScreenTools.defaultFontPixelWidth  * 50).toFixed(0))
                spacing:    ScreenTools.defaultFontPixelHeight * 0.5
                anchors.horizontalCenter: parent.horizontalCenter
                QGCLabel {
                    text:           qsTr("Select Tile Sets to Export")
                    font.pointSize: ScreenTools.mediumFontPointSize
                }
                Item { width: 1; height: ScreenTools.defaultFontPixelHeight; }
                Repeater {
                    model: QGroundControl.mapEngineManager.tileSets
                    delegate: QGCCheckBox {
                        text:           object.name
                        checked:        object.selected
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                        onClicked:      object.selected = checked
                        Connections {
                            // This connection should theoretically not be needed since the `checked: object.selected` binding should work.
                            // But for some reason when the user clicks the check box taht binding breaks. Which in turns causes
                            // Select All/None to update the internal state but check box visible state is out of sync
                            target:             object
                            onSelectedChanged:  checked = object.selected
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                        }
                    }
                }
            }
        }
        Row {
            id:                 _exportButtonRow
            visible:            _exporTiles.visible
            spacing:            _margins
            anchors.bottom:     parent.bottom
            anchors.margins:    ScreenTools.defaultFontPixelWidth
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            anchors.horizontalCenter: parent.horizontalCenter
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            QGCButton {
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                text:           qsTr("Select All")
                width:          _bigButtonSize
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                onClicked:      QGroundControl.mapEngineManager.selectAll()
            }
            QGCButton {
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                text:           qsTr("Select None")
                width:          _bigButtonSize
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                onClicked:      QGroundControl.mapEngineManager.selectNone()
            }
            QGCButton {
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                text:           qsTr("Export")
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                width:          _bigButtonSize
                enabled:        QGroundControl.mapEngineManager.selectedCount > 0
                onClicked: {
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                    fileDialog.title = qsTr("Export Tile Set")
                    fileDialog.selectExisting = false
                    fileDialog.openForSave()
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                }
            }
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            QGCButton {
                text:           qsTr("Cancel")
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                width:          _bigButtonSize
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                onClicked:       showList()
            }
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        }
    } // QGCViewPanel
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    Component {
        id: exportToDiskProgress
        Rectangle {
            width:      mainWindow.width
            height:     mainWindow.height
            color:      "black"
            anchors.centerIn: parent
            Rectangle {
                width:  parent.width  * 0.5
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                height: exportCol.height * 1.25
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                radius: ScreenTools.defaultFontPixelWidth
                color:  qgcPal.windowShadeDark
                border.color: qgcPal.text
                anchors.centerIn: parent
                Column {
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                    id:                 exportCol
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                    spacing:            ScreenTools.defaultFontPixelHeight
                    width:              parent.width
                    anchors.centerIn:   parent
                    QGCLabel {
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                        text:               QGroundControl.mapEngineManager.importAction === QGCMapEngineManager.ActionExporting ? qsTr("Tile Set Export Progress") : qsTr("Tile Set Export Completed")
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                        font.family:        ScreenTools.demiboldFontFamily
                        font.pointSize:     ScreenTools.mediumFontPointSize
                        anchors.horizontalCenter: parent.horizontalCenter
                    }
                    ProgressBar {
                        id:             progressBar
                        width:          parent.width * 0.45
                        maximumValue:   100
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                        value:          QGroundControl.mapEngineManager.actionProgress
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                        anchors.horizontalCenter: parent.horizontalCenter
                    }
                    BusyIndicator {
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                        visible:        QGroundControl.mapEngineManager ? QGroundControl.mapEngineManager.importAction === QGCMapEngineManager.ActionExporting : false
                        running:        QGroundControl.mapEngineManager ? QGroundControl.mapEngineManager.importAction === QGCMapEngineManager.ActionExporting : false
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                        width:          exportCloseButton.height
                        height:         exportCloseButton.height
                        anchors.horizontalCenter: parent.horizontalCenter
                    }
                    QGCButton {
                        id:             exportCloseButton
                        text:           qsTr("Close")
                        width:          _buttonSize
                        visible:        !QGroundControl.mapEngineManager.exporting
                        anchors.horizontalCenter: parent.horizontalCenter
                        onClicked: {
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                            mainWindow.enableToolbar()
                            rootLoader.sourceComponent = null
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                        }
                    }
                }
            }
        }
    }

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    Component {
        id: importDialog
        Rectangle {
            width:      mainWindow.width
            height:     mainWindow.height
            color:      "black"
            anchors.centerIn: parent
            Rectangle {
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                width:  parent.width  * 0.5
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                height: importCol.height * 1.5
                radius: ScreenTools.defaultFontPixelWidth
                color:  qgcPal.windowShadeDark
                border.color: qgcPal.text
                anchors.centerIn: parent
                Column {
                    id:                 importCol
                    spacing:            ScreenTools.defaultFontPixelHeight
                    width:              parent.width
                    anchors.centerIn:   parent
                    QGCLabel {
                        text: {
                            if(QGroundControl.mapEngineManager.importAction === QGCMapEngineManager.ActionNone) {
                                return qsTr("Map Tile Set Import");
                            } else if(QGroundControl.mapEngineManager.importAction === QGCMapEngineManager.ActionImporting) {
                                return qsTr("Map Tile Set Import Progress");
                            } else {
                                return qsTr("Map Tile Set Import Completed");
                            }
                        }
                        font.family:        ScreenTools.demiboldFontFamily
                        font.pointSize:     ScreenTools.mediumFontPointSize
                        anchors.horizontalCenter: parent.horizontalCenter
                    }
                    ProgressBar {
                        id:             progressBar
                        width:          parent.width * 0.45
                        maximumValue:   100
                        visible:        QGroundControl.mapEngineManager.importAction === QGCMapEngineManager.ActionImporting
                        value:          QGroundControl.mapEngineManager.actionProgress
                        anchors.horizontalCenter: parent.horizontalCenter
                    }
                    BusyIndicator {
                        visible:        QGroundControl.mapEngineManager.importAction === QGCMapEngineManager.ActionImporting
                        running:        QGroundControl.mapEngineManager.importAction === QGCMapEngineManager.ActionImporting
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                        width:          ScreenTools.defaultFontPixelWidth * 2
                        height:         width
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                        anchors.horizontalCenter: parent.horizontalCenter
                    }
                    ExclusiveGroup { id: radioGroup }
                    Column {
                        spacing:            ScreenTools.defaultFontPixelHeight
                        width:              ScreenTools.defaultFontPixelWidth * 24
                        anchors.horizontalCenter: parent.horizontalCenter
                        QGCRadioButton {
                            exclusiveGroup: radioGroup
                            text:           qsTr("Append to existing set")
                            checked:        !QGroundControl.mapEngineManager.importReplace
                            onClicked:      QGroundControl.mapEngineManager.importReplace = !checked
                            visible:        QGroundControl.mapEngineManager.importAction === QGCMapEngineManager.ActionNone
                        }
                        QGCRadioButton {
                            exclusiveGroup: radioGroup
                            text:           qsTr("Replace existing set")
                            checked:        QGroundControl.mapEngineManager.importReplace
                            onClicked:      QGroundControl.mapEngineManager.importReplace = checked
                            visible:        QGroundControl.mapEngineManager.importAction === QGCMapEngineManager.ActionNone
                        }
                    }
                    QGCButton {
                        text:           qsTr("Close")
                        width:          _bigButtonSize * 1.25
                        visible:        QGroundControl.mapEngineManager.importAction === QGCMapEngineManager.ActionDone
                        anchors.horizontalCenter: parent.horizontalCenter
                        onClicked: {
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                            showList();
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                            mainWindow.enableToolbar()
                            rootLoader.sourceComponent = null
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                        }
                    }
                    Row {
                        spacing:            _margins
                        visible:            QGroundControl.mapEngineManager.importAction === QGCMapEngineManager.ActionNone
                        anchors.horizontalCenter: parent.horizontalCenter
                        QGCButton {
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                            text:           qsTr("Import")
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                            width:          _bigButtonSize * 1.25
                            onClicked: {
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                                rootLoader.sourceComponent = null
                                fileDialog.title = qsTr("Import Tile Set")
                                fileDialog.selectExisting = true
                                fileDialog.openForLoad()
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                            }
                        }
                        QGCButton {
                            text:           qsTr("Cancel")
                            width:          _bigButtonSize * 1.25
                            onClicked: {
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                                showList();
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                                mainWindow.enableToolbar()
                                rootLoader.sourceComponent = null
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                            }
                        }
                    }
                }
            }
        }
    }

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} // QGCView