Merge pull request #6152 from mavlink/qmlFixes

QML fixes

src/AnalyzeView/GeoTagPage.qml

@@ -110,7 +110,7 @@ AnalyzePage {
                 }
 
                 QGCLabel {
-                    text: geoController.saveDirectory != "" ? geoController.saveDirectory : "/TAGGED folder in your image folder"
+                    text: geoController.saveDirectory !== "" ? geoController.saveDirectory : "/TAGGED folder in your image folder"
                     anchors.verticalCenter:   parent.verticalCenter
                 }
             }

src/AutoPilotPlugins/Common/MotorComponent.qml

@@ -55,7 +55,7 @@ SetupPage {
                             property real _lastValue: 0
 
                             onTriggered: {
-                                if (_lastValue != slider.value) {
+                                if (_lastValue !== slider.value) {
                                     controller.vehicle.motorTest(index + 1, slider.value, 1)
                                 }
                             }

src/AutoPilotPlugins/Common/RadioComponent.qml

@@ -379,7 +379,7 @@ SetupPage {
                         text:       qsTr("Calibrate")
 
                         onClicked: {
-                            if (text == qsTr("Calibrate")) {
+                            if (text === qsTr("Calibrate")) {
                                 showDialog(zeroTrimsDialogComponent, dialogTitle, radioPage.showDialogDefaultWidth, StandardButton.Ok | StandardButton.Cancel)
                             } else {
                                 controller.nextButtonClicked()

src/AutoPilotPlugins/PX4/AirframeComponent.qml

@@ -202,12 +202,12 @@ Your vehicle will also be restarted in order to complete the process.")
                             QGCCheckBox {
                                 // Although this item is invisible we still use it to manage state
                                 id:             airframeCheckBox
-                                checked:        modelData.name == controller.currentAirframeType
+                                checked:        modelData.name === controller.currentAirframeType
                                 exclusiveGroup: airframeTypeExclusive
                                 visible:        false
 
                                 onCheckedChanged: {
-                                    if (checked && combo.currentIndex != -1) {
+                                    if (checked && combo.currentIndex !== -1) {
                                         console.log("check box change", combo.currentIndex)
                                         controller.autostartId = modelData.airframes[combo.currentIndex].autostartId
                                     }

src/AutoPilotPlugins/PX4/AirframeComponentSummary.qml

@@ -37,7 +37,7 @@ FactPanel {
 
         VehicleSummaryRow {
             labelText: qsTr("Firmware Version:")
-            valueText: activeVehicle.firmwareMajorVersion == -1 ? qsTr("Unknown") : activeVehicle.firmwareMajorVersion + "." + activeVehicle.firmwareMinorVersion + "." + activeVehicle.firmwarePatchVersion + activeVehicle.firmwareVersionTypeString
+            valueText: activeVehicle.firmwareMajorVersion === -1 ? qsTr("Unknown") : activeVehicle.firmwareMajorVersion + "." + activeVehicle.firmwareMinorVersion + "." + activeVehicle.firmwarePatchVersion + activeVehicle.firmwareVersionTypeString
         }
     }
 }

src/AutoPilotPlugins/PX4/FlightModesComponentSummary.qml

@@ -18,7 +18,7 @@ FactPanel {
     property Fact _nullFact
     property Fact _rcMapFltmode:    controller.parameterExists(-1, "RC_MAP_FLTMODE") ? controller.getParameterFact(-1, "RC_MAP_FLTMODE") : _nullFact
     property Fact _rcMapModeSw:     controller.getParameterFact(-1, "RC_MAP_MODE_SW")
-    property bool _simpleMode:      _rcMapFltmode.value > 0 || _rcMapModeSw.value == 0
+    property bool _simpleMode:      _rcMapFltmode.value > 0 || _rcMapModeSw.value === 0
 
     Loader {
         anchors.fill:       parent

src/AutoPilotPlugins/PX4/PX4FlightModes.qml

@@ -39,7 +39,7 @@ SetupPage {
             property bool _rcMapFltmodeExists:  controller.parameterExists(-1, "RC_MAP_FLTMODE")
             property Fact _rcMapFltmode:        _rcMapFltmodeExists ? controller.getParameterFact(-1, "RC_MAP_FLTMODE") : _nullFact
             property Fact _rcMapModeSw:         controller.getParameterFact(-1, "RC_MAP_MODE_SW")
-            property bool _simpleMode:          _rcMapFltmodeExists ? _rcMapFltmode.value > 0 || _rcMapModeSw.value == 0 : false
+            property bool _simpleMode:          _rcMapFltmodeExists ? _rcMapFltmode.value > 0 || _rcMapModeSw.value === 0 : false
 
             FactPanelController {
                 id:         controller

src/AutoPilotPlugins/PX4/PX4SimpleFlightModes.qml

@@ -145,7 +145,7 @@ Item {
                                 QGCLabel {
                                     anchors.baseline:   returnCombo.baseline
                                     text:               qsTr("Return switch:")
-                                    color:              parent.fact.value == 0 ? qgcPal.text : (controller.rcChannelValues[parent.fact.value - 1] >= 1500 ? "yellow" : qgcPal.text)
+                                    color:              parent.fact.value === 0 ? qgcPal.text : (controller.rcChannelValues[parent.fact.value - 1] >= 1500 ? "yellow" : qgcPal.text)
                                 }
 
                                 FactComboBox {
@@ -164,7 +164,7 @@ Item {
                                 QGCLabel {
                                     anchors.baseline:   killCombo.baseline
                                     text:               qsTr("Kill switch:")
-                                    color:              parent.fact.value == 0 ? qgcPal.text : (controller.rcChannelValues[parent.fact.value - 1] >= 1500 ? "yellow" : qgcPal.text)
+                                    color:              parent.fact.value === 0 ? qgcPal.text : (controller.rcChannelValues[parent.fact.value - 1] >= 1500 ? "yellow" : qgcPal.text)
                                 }
 
                                 FactComboBox {
@@ -183,7 +183,7 @@ Item {
                                 QGCLabel {
                                     anchors.baseline:   offboardCombo.baseline
                                     text:               qsTr("Offboard switch:")
-                                    color:              parent.fact.value == 0 ? qgcPal.text : (controller.rcChannelValues[parent.fact.value - 1] >= 1500 ? "yellow" : qgcPal.text)
+                                    color:              parent.fact.value === 0 ? qgcPal.text : (controller.rcChannelValues[parent.fact.value - 1] >= 1500 ? "yellow" : qgcPal.text)
                                 }
 
                                 FactComboBox {
@@ -203,7 +203,7 @@ Item {
                                 QGCLabel {
                                     anchors.baseline:   vtolCombo.baseline
                                     text:               qsTr("VTOL mode switch:")
-                                    color:              parent.fact.value == 0 ? qgcPal.text : (controller.rcChannelValues[parent.fact.value - 1] >= 1500 ? "yellow" : qgcPal.text)
+                                    color:              parent.fact.value === 0 ? qgcPal.text : (controller.rcChannelValues[parent.fact.value - 1] >= 1500 ? "yellow" : qgcPal.text)
                                 }
 
                                 FactComboBox {

src/AutoPilotPlugins/PX4/PowerComponent.qml

@@ -143,7 +143,7 @@ SetupPage {
 
                                     onClicked:  {
                                         var measuredVoltageValue = parseFloat(measuredVoltage.text)
-                                        if (measuredVoltageValue == 0 || isNaN(measuredVoltageValue)) {
+                                        if (measuredVoltageValue === 0 || isNaN(measuredVoltageValue)) {
                                             return
                                         }
                                         var newVoltageDivider = (measuredVoltageValue * battVoltageDivider.value) / controller.vehicle.battery.voltage.value
@@ -201,7 +201,7 @@ SetupPage {
 
                                     onClicked:  {
                                         var measuredCurrentValue = parseFloat(measuredCurrent.text)
-                                        if (measuredCurrentValue == 0) {
+                                        if (measuredCurrentValue === 0) {
                                             return
                                         }
                                         var newAmpsPerVolt = (measuredCurrentValue * battAmpsPerVolt.value) / controller.vehicle.battery.current.value
@@ -379,7 +379,7 @@ SetupPage {
                 QGCCheckBox {
                     id:         showUAVCAN
                     text:       qsTr("Show UAVCAN Settings")
-                    checked:    uavcanEnable.rawValue != 0
+                    checked:    uavcanEnable ? uavcanEnable.rawValue !== 0 : false
                 }
 
                 QGCGroupBox {

src/AutoPilotPlugins/PX4/SensorsComponentSummaryFixedWing.qml

@@ -25,8 +25,8 @@ FactPanel {
     property Fact airspeedDisabledFact: controller.getParameterFact(-1, "FW_ARSP_MODE")
     property Fact airspeedBreakerFact:  controller.getParameterFact(-1, "CBRK_AIRSPD_CHK")
 
-    property bool _airspeedVisible:     airspeedDisabledFact.value == false && airspeedBreakerFact.value != 162128
-    property bool _airspeedCalRequired: _airspeedVisible && dpressOffFact.value == 0
+    property bool _airspeedVisible:     airspeedDisabledFact.value === false && airspeedBreakerFact.value !== 162128
+    property bool _airspeedCalRequired: _airspeedVisible && dpressOffFact.value === 0
 
     Column {
         anchors.fill:       parent

src/AutoPilotPlugins/PX4/SensorsSetup.qml

@@ -352,7 +352,7 @@ Item {
                 id:             compassButton
                 width:          _buttonWidth
                 text:           qsTr("Compass")
-                indicatorGreen: cal_mag0_id.value != 0
+                indicatorGreen: cal_mag0_id.value !== 0
                 visible:        QGroundControl.corePlugin.options.showSensorCalibrationCompass && showSensorCalibrationCompass
 
                 onClicked: {
@@ -366,7 +366,7 @@ Item {
                 id:             gyroButton
                 width:          _buttonWidth
                 text:           qsTr("Gyroscope")
-                indicatorGreen: cal_gyro0_id.value != 0
+                indicatorGreen: cal_gyro0_id.value !== 0
                 visible:        QGroundControl.corePlugin.options.showSensorCalibrationGyro && showSensorCalibrationGyro
 
                 onClicked: {
@@ -380,7 +380,7 @@ Item {
                 id:             accelButton
                 width:          _buttonWidth
                 text:           qsTr("Accelerometer")
-                indicatorGreen: cal_acc0_id.value != 0
+                indicatorGreen: cal_acc0_id.value !== 0
                 visible:        QGroundControl.corePlugin.options.showSensorCalibrationAccel && showSensorCalibrationAccel
 
                 onClicked: {
@@ -394,8 +394,8 @@ Item {
                 id:             levelButton
                 width:          _buttonWidth
                 text:           qsTr("Level Horizon")
-                indicatorGreen: sens_board_x_off.value != 0 || sens_board_y_off.value != 0 | sens_board_z_off.value != 0
-                enabled:        cal_acc0_id.value != 0 && cal_gyro0_id.value != 0
+                indicatorGreen: sens_board_x_off.value !== 0 || sens_board_y_off.value !== 0 | sens_board_z_off.value !== 0
+                enabled:        cal_acc0_id.value !== 0 && cal_gyro0_id.value !== 0
                 visible:        QGroundControl.corePlugin.options.showSensorCalibrationLevel && showSensorCalibrationLevel
 
                 onClicked: {
@@ -410,11 +410,11 @@ Item {
                 width:          _buttonWidth
                 text:           qsTr("Airspeed")
                 visible:        (controller.vehicle.fixedWing || controller.vehicle.vtol) &&
-                                controller.getParameterFact(-1, "FW_ARSP_MODE").value == false &&
-                                controller.getParameterFact(-1, "CBRK_AIRSPD_CHK").value != 162128 &&
+                                controller.getParameterFact(-1, "FW_ARSP_MODE").value === false &&
+                                controller.getParameterFact(-1, "CBRK_AIRSPD_CHK").value !== 162128 &&
                                 QGroundControl.corePlugin.options.showSensorCalibrationAirspeed &&
                                 showSensorCalibrationAirspeed
-                indicatorGreen: sens_dpres_off.value != 0
+                indicatorGreen: sens_dpres_off.value !== 0
 
                 onClicked: {
                     preCalibrationDialogType = "airspeed"

src/FactSystem/FactControls/FactBitmask.qml

@@ -33,10 +33,12 @@ Flow {
             checked:    fact.value & fact.bitmaskValues[index]
 
             onClicked: {
+                var i;
+                var otherCheckbox;
                 if (checked) {
                     if (firstEntryIsAll && index == 0) {
-                        for (var i=1; i<repeater.count; i++) {
-                            var otherCheckbox = repeater.itemAt(i)
+                        for (i = 1; i < repeater.count; i++) {
+                            otherCheckbox = repeater.itemAt(i)
                             fact.value &= ~fact.bitmaskValues[i]
                             otherCheckbox.checked = false
                             otherCheckbox.enabled = false
@@ -45,8 +47,8 @@ Flow {
                     fact.value |= fact.bitmaskValues[index]
                 } else {
                     if (firstEntryIsAll && index == 0) {
-                        for (var i=1; i<repeater.count; i++) {
-                            var otherCheckbox = repeater.itemAt(i)
+                        for (i = 1; i < repeater.count; i++) {
+                            otherCheckbox = repeater.itemAt(i)
                             otherCheckbox.enabled = true
                         }
                     }

src/FactSystem/FactControls/FactCheckBox.qml

@@ -8,16 +8,14 @@ import QGroundControl.Controls 1.0
 
 QGCCheckBox {
     property Fact fact: Fact { }
-    property variant checkedValue: 1
-    property variant uncheckedValue: 0
 
     checkedState: fact ?
                       (fact.typeIsBool ?
-                           (fact.value === true ? Qt.Checked : Qt.Unchecked) :
-                           (fact.value === checkedValue ? Qt.Checked : Qt.Unchecked)) :
+                           (fact.value === false ? Qt.Unchecked : Qt.Checked) :
+                           (fact.value === 0 ? Qt.Unchecked : Qt.Checked)) :
                       Qt.Unchecked
 
     text: qsTr("Label")
 
-    onClicked: fact.value = checked ? checkedValue : uncheckedValue
+    onClicked: fact.value = checked ? 1 : 0
 }

src/FactSystem/FactControls/FactComboBox.qml

@@ -12,7 +12,7 @@ QGCComboBox {
 
     model: fact ? fact.enumStrings : null
 
-    currentIndex: indexModel ? fact.value : fact.enumIndex
+    currentIndex: fact ? (indexModel ? fact.value : fact.enumIndex) : 0
 
     onActivated: {
         if (indexModel) {

src/FactSystem/FactControls/FactTextField.qml

@@ -32,7 +32,7 @@ QGCTextField {
         }
         if (typeof qgcView !== 'undefined' && qgcView) {
             var errorString = fact.validate(text, false /* convertOnly */)
-            if (errorString == "") {
+            if (errorString === "") {
                 fact.value = text
             } else {
                 _validateString = text

src/FlightDisplay/FlightDisplayViewMap.qml

@@ -143,7 +143,7 @@ FlightMap {
 
         onNewItemsFromVehicle: {
             var visualItems = _missionController.visualItems
-            if (visualItems && visualItems.count != 1) {
+            if (visualItems && visualItems.count !== 1) {
                 mapFitFunctions.fitMapViewportToMissionItems()
                 firstVehiclePositionReceived = true
             }

src/FlightDisplay/FlightDisplayViewWidgets.qml

@@ -72,7 +72,7 @@ Item {
                     instrumentsLoader.state  = "topMode"
                 } else {
                     instrumentsLoader.source = "qrc:/qml/QGCInstrumentWidget.qml"
-                    instrumentsLoader.state  = QGroundControl.settingsManager.appSettings.showLargeCompass.value == 1 ? "centerMode" : "topMode"
+                    instrumentsLoader.state  = QGroundControl.settingsManager.appSettings.showLargeCompass.value === 1 ? "centerMode" : "topMode"
                 }
             }
         } else {

src/FlightDisplay/GuidedActionsController.qml

@@ -313,6 +313,8 @@ Item {
 
     // Executes the specified action
     function executeAction(actionCode, actionData) {
+        var i;
+        var rgVehicle;
         switch (actionCode) {
         case actionRTL:
             _activeVehicle.guidedModeRTL()
@@ -336,10 +338,9 @@ Item {
             _activeVehicle.startMission()
             break
         case actionMVStartMission:
-            var rgVehicle = QGroundControl.multiVehicleManager.vehicles
-            for (var i=0; i<rgVehicle.count; i++) {
-                var vehicle = rgVehicle.get(i)
-                vehicle.startMission()
+            rgVehicle = QGroundControl.multiVehicleManager.vehicles
+            for (i = 0; i < rgVehicle.count; i++) {
+                rgVehicle.get(i).startMission()
             }
             break
         case actionArm:
@@ -370,10 +371,9 @@ Item {
             _activeVehicle.pauseVehicle()
             break
         case actionMVPause:
-            var rgVehicle = QGroundControl.multiVehicleManager.vehicles
-            for (var i=0; i<rgVehicle.count; i++) {
-                var vehicle = rgVehicle.get(i)
-                vehicle.pauseVehicle()
+            rgVehicle = QGroundControl.multiVehicleManager.vehicles
+            for (i = 0; i < rgVehicle.count; i++) {
+                rgVehicle.get(i).pauseVehicle()
             }
             break
         case actionVtolTransitionToFwdFlight:

src/FlightDisplay/MultiVehicleList.qml

@@ -152,7 +152,7 @@ Item {
 
                     QGCButton {
                         text:       "Start Mission"
-                        visible:    _vehicle.armed && _vehicle.flightMode != _vehicle.missionFlightMode
+                        visible:    _vehicle.armed && _vehicle.flightMode !== _vehicle.missionFlightMode
                         onClicked:  _vehicle.startMission()
                     }
 
@@ -164,13 +164,13 @@ Item {
 
                     QGCButton {
                         text:       "RTL"
-                        visible:    _vehicle.armed && _vehicle.flightMode != _vehicle.rtlFlightMode
+                        visible:    _vehicle.armed && _vehicle.flightMode !== _vehicle.rtlFlightMode
                         onClicked:  _vehicle.flightMode = _vehicle.rtlFlightMode
                     }
 
                     QGCButton {
                         text:       "Take control"
-                        visible:    _vehicle.armed && _vehicle.flightMode != _vehicle.takeControlFlightMode
+                        visible:    _vehicle.armed && _vehicle.flightMode !== _vehicle.takeControlFlightMode
                         onClicked:  _vehicle.flightMode = _vehicle.takeControlFlightMode
                     }
                 } // Row

src/FlightMap/MapItems/CustomMapItems.qml

@@ -29,9 +29,9 @@ Item {
 
             Component.onCompleted: {
                 var controlUrl = object.url
-                if (controlUrl != "") {
+                if (controlUrl !== "") {
                     var component = Qt.createComponent(controlUrl);
-                    if (component.status == Component.Ready) {
+                    if (component.status === Component.Ready) {
                         _customObject = component.createObject(map, { "customMapObject": object })
                         if (_customObject) {
                             map.addMapItem(_customObject)

src/FlightMap/MapItems/PolygonEditor.qml

@@ -233,7 +233,7 @@ Item {
 
                     var clickCoordinate = map.toCoordinate(Qt.point(mouse.x, mouse.y), false /* clipToViewPort */)
                     var polygonPath = _newPolygon.path
-                    if (polygonPath.length == 0) {
+                    if (polygonPath.length === 0) {
                         // Add first coordinate
                         polygonPath.push(clickCoordinate)
                     } else {
@@ -252,10 +252,10 @@ Item {
                     _currentPolygon.path = polygonPath
                     _newPolygon.path = polygonPath
 
-                    if (_mobile && _currentPolygon.path.length == 1) {
+                    if (_mobile && _currentPolygon.path.length === 1) {
                         _mobilePoint.coordinate = _currentPolygon.path[0]
                         _mobilePoint.visible = true
-                    } else if (_mobile && _currentPolygon.path.length == 2) {
+                    } else if (_mobile && _currentPolygon.path.length === 2) {
                         // Show initial line segment on mobile
                         _mobileSegment.path = [ _currentPolygon.path[0], _currentPolygon.path[1] ]
                         _mobileSegment.visible = true

src/FlightMap/MapScale.qml

@@ -115,7 +115,7 @@ Item {
         var rightCoord = mapControl.toCoordinate(Qt.point(scaleLinePixelLength, scale.y), false /* clipToViewPort */)
         var scaleLineMeters = Math.round(leftCoord.distanceTo(rightCoord))
 
-        if (QGroundControl.settingsManager.unitsSettings.distanceUnits.value == UnitsSettings.DistanceUnitsFeet) {
+        if (QGroundControl.settingsManager.unitsSettings.distanceUnits.value === UnitsSettings.DistanceUnitsFeet) {
             calculateFeetRatio(scaleLineMeters, scaleLinePixelLength)
         } else {
             calculateMetersRatio(scaleLineMeters, scaleLinePixelLength)

src/FlightMap/Widgets/CenterMapDropButton.qml

@@ -61,7 +61,7 @@ DropButton {
     /// Fits the visible region of the map to inclues all of the specified coordinates. If no coordinates
     /// are specified the map will center to fitHomePosition()
     function fitMapViewportToAllCoordinates(coordList) {
-        if (coordList.length == 0) {
+        if (coordList.length === 0) {
             map.center = fitHomePosition()
             return
         }
@@ -115,16 +115,17 @@ DropButton {
     }
 
     function addFenceItemCoordsForFit(coordList) {
+        var i
         var homePosition = fitHomePosition()
         if (homePosition.isValid && geoFenceController.circleEnabled) {
             var azimuthList = [ 0, 180, 90, 270 ]
-            for (var i=0; i<azimuthList.length; i++) {
+            for (i = 0; i < azimuthList.length; i++) {
                 var edgeCoordinate = homePosition.atDistanceAndAzimuth(geoFenceController.circleRadius, azimuthList[i])
                 coordList.push(edgeCoordinate)
             }
         }
         if (geoFenceController.polygonEnabled && geoFenceController.polygon.count() > 2) {
-            for (var i=0; i<geoFenceController.polygon.count(); i++) {
+            for (i = 0; i < geoFenceController.polygon.count(); i++) {
                 coordList.push(geoFenceController.polygon.path[i])
             }
         }

src/FlightMap/Widgets/MapFitFunctions.qml

@@ -49,7 +49,7 @@ Item {
     /// are specified the map will center to fitHomePosition()
     function fitMapViewportToAllCoordinates(coordList) {
         var mapFitViewport = Qt.rect(0, 0, map.width, map.height)
-        if (coordList.length == 0) {
+        if (coordList.length === 0) {
             var homeCoord = fitHomePosition()
             if (homeCoord.isValid) {
                 map.center = homeCoord
@@ -113,16 +113,17 @@ Item {
     }
 
     function addFenceItemCoordsForFit(coordList) {
+        var i
         var homePosition = fitHomePosition()
         if (homePosition.isValid && _geoFenceController.circleEnabled) {
             var azimuthList = [ 0, 180, 90, 270 ]
-            for (var i=0; i<azimuthList.length; i++) {
+            for (i = 0; i < azimuthList.length; i++) {
                 var edgeCoordinate = homePosition.atDistanceAndAzimuth(_geoFenceController.circleRadius, azimuthList[i])
                 coordList.push(edgeCoordinate)
             }
         }
         if (_geoFenceController.polygonEnabled && _geoFenceController.mapPolygon.path.count > 2) {
-            for (var i=0; i<_geoFenceController.mapPolygon.path.count; i++) {
+            for (i = 0; i < _geoFenceController.mapPolygon.path.count; i++) {
                 coordList.push(_geoFenceController.mapPolygon.path[i])
             }
         }

src/FlightMap/Widgets/ValuePageWidget.qml

@@ -175,7 +175,7 @@ Column {
                         sourceComponent:    factGroupList
 
                         property var    factGroup:     _activeVehicle
-                        property var factGroupName: "Vehicle"
+                        property string factGroupName: "Vehicle"
                     }
                 }
             }

src/PlanView/CameraCalc.qml

@@ -39,7 +39,7 @@ Column {
         }
         gridTypeCombo.model = _cameraList
         var knownCameraIndex = gridTypeCombo.find(cameraCalc.cameraName)
-        if (knownCameraIndex != -1) {
+        if (knownCameraIndex !== -1) {
             gridTypeCombo.currentIndex = knownCameraIndex
         } else {
             console.log("Internal error: Known camera not found", cameraCalc.cameraName)

src/PlanView/CameraSection.qml

@@ -46,7 +46,7 @@ Column {
             anchors.left:   parent.left
             anchors.right:  parent.right
             spacing:        ScreenTools.defaultFontPixelWidth
-            visible:        _camera.cameraAction.rawValue == 1
+            visible:        _camera.cameraAction.rawValue === 1
 
             QGCLabel {
                 text:               qsTr("Time")
@@ -62,7 +62,7 @@ Column {
             anchors.left:   parent.left
             anchors.right:  parent.right
             spacing:        ScreenTools.defaultFontPixelWidth
-            visible:        _camera.cameraAction.rawValue == 2
+            visible:        _camera.cameraAction.rawValue === 2
 
             QGCLabel {
                 text:               qsTr("Distance")

src/PlanView/GeoFenceEditor.qml

@@ -154,7 +154,7 @@ QGCFlickable {
 
                         QGCLabel {
                             text:       qsTr("None")
-                            visible:    polygonSection.checked && myGeoFenceController.polygons.count == 0
+                            visible:    polygonSection.checked && myGeoFenceController.polygons.count === 0
                         }
 
                         GridLayout {
@@ -239,7 +239,7 @@ QGCFlickable {
 
                         QGCLabel {
                             text:       qsTr("None")
-                            visible:    circleSection.checked && myGeoFenceController.circles.count == 0
+                            visible:    circleSection.checked && myGeoFenceController.circles.count === 0
                         }
 
                         GridLayout {

src/PlanView/MissionItemEditor.qml

@@ -89,7 +89,7 @@ Rectangle {
         height:                 _hamburgerSize
         sourceSize.height:      _hamburgerSize
         source:                 "qrc:/qmlimages/Hamburger.svg"
-        visible:                missionItem.isCurrentItem && missionItem.sequenceNumber != 0
+        visible:                missionItem.isCurrentItem && missionItem.sequenceNumber !== 0
         color:                  qgcPal.windowShade
 
     }

src/PlanView/PlanToolBar.qml

@@ -32,13 +32,13 @@ Rectangle {
     property real   missionMaxTelemetry:        _controllerValid ? planMasterController.missionController.missionMaxTelemetry : NaN
     property bool   missionDirty:               _controllerValid ? planMasterController.missionController.dirty : false
 
-    property bool   _controllerValid:           planMasterController != undefined
+    property bool   _controllerValid:           planMasterController !== undefined
     property bool   _controllerOffline:         _controllerValid ? planMasterController.offline : true
     property var    _controllerDirty:           _controllerValid ? planMasterController.dirty : false
     property var    _controllerSyncInProgress:  _controllerValid ? planMasterController.syncInProgress : false
 
-    property bool   _statusValid:               currentMissionItem != undefined
-    property bool   _missionValid:              missionItems != undefined
+    property bool   _statusValid:               currentMissionItem !== undefined
+    property bool   _missionValid:              missionItems !== undefined
 
     property real   _dataFontSize:              ScreenTools.defaultFontPointSize
     property real   _largeValueWidth:           ScreenTools.defaultFontPixelWidth * 8

src/PlanView/PlanView.qml

@@ -238,7 +238,7 @@ QGCView {
     QGCFileDialog {
         id:             fileDialog
         qgcView:        _qgcView
-        property var plan:           true
+        property bool plan: true
         folder:         QGroundControl.settingsManager.appSettings.missionSavePath
         fileExtension:  QGroundControl.settingsManager.appSettings.planFileExtension
         fileExtension2: QGroundControl.settingsManager.appSettings.missionFileExtension
@@ -263,7 +263,7 @@ QGCView {
             function accept() {
                 var toIndex = toCombo.currentIndex
 
-                if (toIndex == 0) {
+                if (toIndex === 0) {
                     toIndex = 1
                 }
                 _missionController.moveMissionItem(_moveDialogMissionItemIndex, toIndex)

src/PlanView/RallyPointItemEditor.qml

@@ -17,7 +17,7 @@ Rectangle {
     property var rallyPoint ///< RallyPoint object associated with editor
     property var controller ///< RallyPointController
 
-    property bool   _currentItem:       rallyPoint ? rallyPoint == controller.currentRallyPoint : false
+    property bool   _currentItem:       rallyPoint ? rallyPoint === controller.currentRallyPoint : false
     property color  _outerTextColor:    _currentItem ? "black" : qgcPal.text
 
     readonly property real  _margin:            ScreenTools.defaultFontPixelWidth / 2

src/PlanView/RallyPointMapVisuals.qml

@@ -45,7 +45,7 @@ Item {
 
         MissionItemIndicatorDrag {
             itemCoordinate: rallyPointObject.coordinate
-            visible:        rallyPointObject == myRallyPointController.currentRallyPoint
+            visible:        rallyPointObject === myRallyPointController.currentRallyPoint
 
             property var rallyPointObject
 
@@ -67,7 +67,7 @@ Item {
             sourceItem: MissionItemIndexLabel {
                 id:         itemIndexLabel
                 label:      qsTr("R", "rally point map item label")
-                checked:    _editingLayer == _layerRallyPoints ? rallyPointObject == myRallyPointController.currentRallyPoint : false
+                checked:    _editingLayer == _layerRallyPoints ? rallyPointObject === myRallyPointController.currentRallyPoint : false
 
                 onClicked: myRallyPointController.currentRallyPoint = rallyPointObject
             }

src/PlanView/SimpleItemEditor.qml

@@ -44,7 +44,7 @@ Rectangle {
 
                 QGCLabel {
                     text:           object.name
-                    visible:        object.name != ""
+                    visible:        object.name !== ""
                     Layout.column:  0
                     Layout.row:     index
                 }

src/PlanView/SurveyItemEditor.qml

@@ -46,7 +46,7 @@ Rectangle {
         } else {
             var index = -1
             for (index=0; index<_cameraList.length; index++) {
-                if (_cameraList[index] == missionItem.camera.value) {
+                if (_cameraList[index] === missionItem.camera.value) {
                     break;
                 }
             }
@@ -243,7 +243,7 @@ Rectangle {
                 anchors.left:   parent.left
                 anchors.right:  parent.right
                 spacing:        _margin
-                visible:        missionItem.manualGrid.value == true
+                visible:        missionItem.manualGrid.value
 
                 QGCCheckBox {
                     id:                 cameraTriggerDistanceCheckBox
@@ -273,7 +273,7 @@ Rectangle {
             anchors.left:   parent.left
             anchors.right:  parent.right
             spacing:        _margin
-            visible:        gridTypeCombo.currentIndex != _gridTypeManual
+            visible:        gridTypeCombo.currentIndex !== _gridTypeManual
 
             Row {
                 spacing:                    _margin
@@ -443,7 +443,7 @@ Rectangle {
                         id:                     windRoseButton
                         anchors.verticalCenter: angleText.verticalCenter
                         iconSource:             qgcPal.globalTheme === QGCPalette.Light ? "/res/wind-roseBlack.svg" : "/res/wind-rose.svg"
-                        visible:                _vehicle.fixedWing
+                        visible:                _vehicle ? _vehicle.fixedWing : false
 
                         onClicked: {
                             windRosePie.angle = Number(gridAngleText.text)
@@ -522,7 +522,7 @@ Rectangle {
         SectionHeader {
             id:         manualGridHeader
             text:       qsTr("Grid")
-            visible:    gridTypeCombo.currentIndex == _gridTypeManual
+            visible:    gridTypeCombo.currentIndex === _gridTypeManual
         }
 
         GridLayout {
@@ -547,7 +547,7 @@ Rectangle {
                     anchors.verticalCenter: manualAngleText.verticalCenter
                     Layout.columnSpan:      1
                     iconSource:             qgcPal.globalTheme === QGCPalette.Light ? "/res/wind-roseBlack.svg" : "/res/wind-rose.svg"
-                    visible:                _vehicle.fixedWing
+                    visible:                _vehicle ? _vehicle.fixedWing : false
 
                     onClicked: {
                         var cords = manualWindRoseButton.mapToItem(_root, 0, 0)

src/PlanView/SurveyMapVisual.qml

@@ -90,6 +90,7 @@ Item {
 
     QGCMapPolygonVisuals {
         id:                 mapPolygonVisuals
+        qgcView:            _root.qgcView
         mapControl:         map
         mapPolygon:         _mapPolygon
         interactive:        _missionItem.isCurrentItem

src/QmlControls/DropButton.qml

@@ -175,9 +175,9 @@ Item {
             id:             arrowCanvas
             anchors.fill:   parent
 
-            property var arrowPoint: Qt.point(0, 0)
-            property var arrowBase1: Qt.point(0, 0)
-            property var arrowBase2: Qt.point(0, 0)
+            property point arrowPoint: Qt.point(0, 0)
+            property point arrowBase1: Qt.point(0, 0)
+            property point arrowBase2: Qt.point(0, 0)
 
             onPaint: {
                 var context = getContext("2d")

src/QmlControls/DropPanel.qml

@@ -124,9 +124,9 @@ Item {
             id:             arrowCanvas
             anchors.fill:   parent
 
-            property var arrowPoint: Qt.point(0, 0)
-            property var arrowBase1: Qt.point(0, 0)
-            property var arrowBase2: Qt.point(0, 0)
+            property point arrowPoint: Qt.point(0, 0)
+            property point arrowBase1: Qt.point(0, 0)
+            property point arrowBase2: Qt.point(0, 0)
 
             onPaint: {
                 var context = getContext("2d")

src/QmlControls/FlightModeMenu.qml

@@ -37,13 +37,14 @@ QGCLabel {
 
     function updateFlightModesMenu() {
         if (activeVehicle && activeVehicle.flightModeSetAvailable) {
+            var i;
             // Remove old menu items
-            for (var i = 0; i < flightModesMenuItems.length; i++) {
+            for (i = 0; i < flightModesMenuItems.length; i++) {
                 flightModesMenu.removeItem(flightModesMenuItems[i])
             }
             flightModesMenuItems.length = 0
             // Add new items
-            for (var i = 0; i < activeVehicle.flightModes.length; i++) {
+            for (i = 0; i < activeVehicle.flightModes.length; i++) {
                 var menuItem = flightModeMenuItemComponent.createObject(null, { "text": activeVehicle.flightModes[i] })
                 flightModesMenuItems.push(menuItem)
                 flightModesMenu.insertItem(i, menuItem)

src/QmlControls/MissionCommandDialog.qml

@@ -68,7 +68,7 @@ QGCViewDialog {
             color:  qgcPal.button
 
             property var    mavCmdInfo: modelData
-            property var    textColor:  qgcPal.buttonText
+            property color  textColor:  qgcPal.buttonText
 
             Column {
                 id:                 commandColumn

src/QmlControls/ParameterEditor.qml

@@ -253,7 +253,7 @@ QGCView {
                         id:     valueLabel
                         width:  ScreenTools.defaultFontPixelWidth  * 20
                         color:  factRow.modelFact.defaultValueAvailable ? (factRow.modelFact.valueEqualsDefault ? __qgcPal.text : __qgcPal.warningText) : __qgcPal.text
-                        text:   factRow.modelFact.enumStrings.length == 0 ? factRow.modelFact.valueString + " " + factRow.modelFact.units : factRow.modelFact.enumStringValue
+                        text:   factRow.modelFact.enumStrings.length === 0 ? factRow.modelFact.valueString + " " + factRow.modelFact.units : factRow.modelFact.enumStringValue
                         clip:   true
                     }
 

src/QmlControls/ParameterEditorDialog.qml

@@ -116,7 +116,7 @@ QGCViewDialog {
                 QGCTextField {
                     id:                 valueField
                     text:               validate ? validateValue : fact.valueString
-                    visible:            fact.enumStrings.length == 0 || validate || manualEntry.checked
+                    visible:            fact.enumStrings.length === 0 || validate || manualEntry.checked
                     unitsLabel:         fact.units
                     showUnits:          fact.units != ""
                     Layout.fillWidth:   true
@@ -145,7 +145,7 @@ QGCViewDialog {
                 visible:        _showCombo
                 model:          fact.enumStrings
 
-                property bool _showCombo: fact.enumStrings.length != 0 && fact.bitmaskStrings.length == 0 && !validate
+                property bool _showCombo: fact.enumStrings.length !== 0 && fact.bitmaskStrings.length === 0 && !validate
 
                 Component.onCompleted: {
                     // We can't bind directly to fact.enumIndex since that would add an unknown value

src/QmlControls/QGCFileDialog.qml

@@ -144,7 +144,7 @@ Item {
 
                     QGCLabel {
                         text:       qsTr("No files")
-                        visible:    fileList.model.length == 0
+                        visible:    fileList.model.length === 0
                     }
                 }
             }

src/QmlControls/QGCFlickableHorizontalIndicator.qml

@@ -11,9 +11,9 @@ Rectangle {
     color:                 parent.indicatorColor
     visible:               showIndicator
 
-    property bool showIndicator: (parent.flickableDirection == Flickable.AutoFlickDirection ||
-                                  parent.flickableDirection == Flickable.HorizontalFlick ||
-                                  parent.flickableDirection == Flickable.HorizontalAndVerticalFlick) &&
+    property bool showIndicator: (parent.flickableDirection === Flickable.AutoFlickDirection ||
+                                  parent.flickableDirection === Flickable.HorizontalFlick ||
+                                  parent.flickableDirection === Flickable.HorizontalAndVerticalFlick) &&
                                  (parent.contentWidth > parent.width)
 
     Component.onCompleted:  animateOpacity.restart()

src/QmlControls/QGCFlickableVerticalIndicator.qml

@@ -11,9 +11,9 @@ Rectangle {
     color:                 parent.indicatorColor
     visible:               showIndicator
 
-    property bool showIndicator: (parent.flickableDirection == Flickable.AutoFlickDirection ||
-                                  parent.flickableDirection == Flickable.VerticalFlick ||
-                                  parent.flickableDirection == Flickable.HorizontalAndVerticalFlick) &&
+    property bool showIndicator: (parent.flickableDirection === Flickable.AutoFlickDirection ||
+                                  parent.flickableDirection === Flickable.VerticalFlick ||
+                                  parent.flickableDirection === Flickable.HorizontalAndVerticalFlick) &&
                                  (parent.contentHeight > parent.height)
 
     Component.onCompleted:  animateOpacity.restart()

src/QmlControls/QGCPipable.qml

@@ -51,8 +51,8 @@ Item {
         anchors.right: parent.right
         height: ScreenTools.minTouchPixels
         width: height
-        property var initialX: 0
-        property var initialWidth: 0
+        property real initialX: 0
+        property real initialWidth: 0
 
         onClicked: {
             // TODO propagate
@@ -98,7 +98,7 @@ Item {
     }
 
     // Resize pip window if necessary when main window is resized
-    property var pipLock: 2
+    property int pipLock: 2
 
     Connections {
         target: pip.parent

src/QmlControls/QGCView.qml

@@ -58,7 +58,7 @@ FactPanel {
             console.log("Error loading QGCViewDialogContainer.qml: ", dialogComponent.errorString())
             return
         }
-        var dialogWidth = charWidth == showDialogFullWidth ? parent.width : ScreenTools.defaultFontPixelWidth * charWidth
+        var dialogWidth = charWidth === showDialogFullWidth ? parent.width : ScreenTools.defaultFontPixelWidth * charWidth
         var dialog = dialogComponent.createObject(_rootItem,
                                                   {
                                                       "anchors.fill":       _rootItem,

src/QmlControls/QGCViewDialog.qml

@@ -27,10 +27,10 @@ FactPanel {
     signal hideDialog
 
     Keys.onReleased: {
-        if (event.key == Qt.Key_Escape) {
+        if (event.key === Qt.Key_Escape) {
             reject()
             event.accepted = true
-        } else if (event.key == Qt.Key_Return || event.key == Qt.Key_Enter) {
+        } else if (event.key === Qt.Key_Return || event.key === Qt.Key_Enter) {
             accept()
             event.accepted = true
         }

src/QmlControls/QmlTest.qml

@@ -138,7 +138,7 @@ Rectangle {
                 // Header row
                 Loader {
                     sourceComponent: rowHeader
-                    property var text: ""
+                    property string text: ""
                 }
                 Text {
                     width: 80
@@ -172,7 +172,7 @@ Rectangle {
                 // window
                 Loader {
                     sourceComponent: rowHeader
-                    property var text: "window"
+                    property string text: "window"
                 }
                 ClickableColor {
                     property var palette: QGCPalette { colorGroupEnabled: false }
@@ -204,7 +204,7 @@ Rectangle {
                 // windowShade
                 Loader {
                     sourceComponent: rowHeader
-                    property var text: "windowShade"
+                    property string text: "windowShade"
                 }
                 ClickableColor {
                     property var palette: QGCPalette { colorGroupEnabled: false }
@@ -236,7 +236,7 @@ Rectangle {
                 // windowShadeDark
                 Loader {
                     sourceComponent: rowHeader
-                    property var text: "windowShadeDark"
+                    property string text: "windowShadeDark"
                 }
                 ClickableColor {
                     property var palette: QGCPalette { colorGroupEnabled: false }
@@ -268,7 +268,7 @@ Rectangle {
                 // text
                 Loader {
                     sourceComponent: rowHeader
-                    property var text: "text"
+                    property string text: "text"
                 }
                 ClickableColor {
                     property var palette: QGCPalette { colorGroupEnabled: false }
@@ -300,7 +300,7 @@ Rectangle {
                 // button
                 Loader {
                     sourceComponent: rowHeader
-                    property var text: "button"
+                    property string text: "button"
                 }
                 ClickableColor {
                     property var palette: QGCPalette { colorGroupEnabled: false }
@@ -332,7 +332,7 @@ Rectangle {
                 // buttonText
                 Loader {
                     sourceComponent: rowHeader
-                    property var text: "buttonText"
+                    property string text: "buttonText"
                 }
                 ClickableColor {
                     property var palette: QGCPalette { colorGroupEnabled: false }
@@ -364,7 +364,7 @@ Rectangle {
                 // buttonHighlight
                 Loader {
                     sourceComponent: rowHeader
-                    property var text: "buttonHighlight"
+                    property string text: "buttonHighlight"
                 }
                 ClickableColor {
                     property var palette: QGCPalette { colorGroupEnabled: false }
@@ -396,7 +396,7 @@ Rectangle {
                 // buttonHighlightText
                 Loader {
                     sourceComponent: rowHeader
-                    property var text: "buttonHighlightText"
+                    property string text: "buttonHighlightText"
                 }
                 ClickableColor {
                     property var palette: QGCPalette { colorGroupEnabled: false }
@@ -428,7 +428,7 @@ Rectangle {
                 // primaryButton
                 Loader {
                     sourceComponent: rowHeader
-                    property var text: "primaryButton"
+                    property string text: "primaryButton"
                 }
                 ClickableColor {
                     property var palette: QGCPalette { colorGroupEnabled: false }
@@ -460,7 +460,7 @@ Rectangle {
                 // primaryButtonText
                 Loader {
                     sourceComponent: rowHeader
-                    property var text: "primaryButtonText"
+                    property string text: "primaryButtonText"
                 }
                 ClickableColor {
                     property var palette: QGCPalette { colorGroupEnabled: false }
@@ -492,7 +492,7 @@ Rectangle {
                 // textField
                 Loader {
                     sourceComponent: rowHeader
-                    property var text: "textField"
+                    property string text: "textField"
                 }
                 ClickableColor {
                     property var palette: QGCPalette { colorGroupEnabled: false }
@@ -524,7 +524,7 @@ Rectangle {
                 // textFieldText
                 Loader {
                     sourceComponent: rowHeader
-                    property var text: "textFieldText"
+                    property string text: "textFieldText"
                 }
                 ClickableColor {
                     property var palette: QGCPalette { colorGroupEnabled: false }
@@ -556,7 +556,7 @@ Rectangle {
                 // warningText
                 Loader {
                     sourceComponent: rowHeader
-                    property var text: "warningText"
+                    property string text: "warningText"
                 }
                 ClickableColor {
                     property var palette: QGCPalette { colorGroupEnabled: false }
@@ -588,7 +588,7 @@ Rectangle {
                 // colorGreen
                 Loader {
                     sourceComponent: rowHeader
-                    property var text: "colorGreen"
+                    property string text: "colorGreen"
                 }
                 ClickableColor {
                     property var palette: QGCPalette { colorGroupEnabled: false }
@@ -620,7 +620,7 @@ Rectangle {
                 // colorOrange
                 Loader {
                     sourceComponent: rowHeader
-                    property var text: "colorOrange"
+                    property string text: "colorOrange"
                 }
                 ClickableColor {
                     property var palette: QGCPalette { colorGroupEnabled: false }
@@ -652,7 +652,7 @@ Rectangle {
                 // colorRed
                 Loader {
                     sourceComponent: rowHeader
-                    property var text: "colorRed"
+                    property string text: "colorRed"
                 }
                 ClickableColor {
                     property var palette: QGCPalette { colorGroupEnabled: false }
@@ -684,7 +684,7 @@ Rectangle {
                 // colorGrey
                 Loader {
                     sourceComponent: rowHeader
-                    property var text: "colorGrey"
+                    property string text: "colorGrey"
                 }
                 ClickableColor {
                     property var palette: QGCPalette { colorGroupEnabled: false }
@@ -716,7 +716,7 @@ Rectangle {
                 // colorBlue
                 Loader {
                     sourceComponent: rowHeader
-                    property var text: "colorBlue"
+                    property string text: "colorBlue"
                 }
                 ClickableColor {
                     property var palette: QGCPalette { colorGroupEnabled: false }
@@ -748,7 +748,7 @@ Rectangle {
                 // alertBackground
                 Loader {
                     sourceComponent: rowHeader
-                    property var text: "alertBackground"
+                    property string text: "alertBackground"
                 }
                 ClickableColor {
                     property var palette: QGCPalette { colorGroupEnabled: false }
@@ -780,7 +780,7 @@ Rectangle {
                 // alertBorder
                 Loader {
                     sourceComponent: rowHeader
-                    property var text: "alertBorder"
+                    property string text: "alertBorder"
                 }
                 ClickableColor {
                     property var palette: QGCPalette { colorGroupEnabled: false }
@@ -812,7 +812,7 @@ Rectangle {
                 // alertText
                 Loader {
                     sourceComponent: rowHeader
-                    property var text: "alertText"
+                    property string text: "alertText"
                 }
                 ClickableColor {
                     property var palette: QGCPalette { colorGroupEnabled: false }
@@ -868,7 +868,7 @@ Rectangle {
                     // Header row
                     Loader {
                         sourceComponent: ctlRowHeader
-                        property var text: ""
+                        property string text: ""
                     }
                     Text {
                         width: 100
@@ -888,7 +888,7 @@ Rectangle {
                     // QGCLabel
                     Loader {
                         sourceComponent: ctlRowHeader
-                        property var text: "QGCLabel"
+                        property string text: "QGCLabel"
                     }
                     QGCLabel {
                         width: 100
@@ -905,7 +905,7 @@ Rectangle {
                     // QGCButton
                     Loader {
                         sourceComponent: ctlRowHeader
-                        property var text: "QGCButton"
+                        property string text: "QGCButton"
                     }
                     QGCButton {
                         width: 100
@@ -922,7 +922,7 @@ Rectangle {
                     // QGCButton - primary
                     Loader {
                         sourceComponent: ctlRowHeader
-                        property var text: "QGCButton(primary)"
+                        property string text: "QGCButton(primary)"
                     }
                     QGCButton {
                         width: 100
@@ -941,7 +941,7 @@ Rectangle {
                     // QGCButton - menu
                     Loader {
                         sourceComponent: ctlRowHeader
-                        property var text: "QGCButton(menu)"
+                        property string text: "QGCButton(menu)"
                     }
                     Menu {
                         id: buttonMenu
@@ -972,7 +972,7 @@ Rectangle {
                     // QGCRadioButton
                     Loader {
                         sourceComponent: ctlRowHeader
-                        property var text: "QGCRadioButton"
+                        property string text: "QGCRadioButton"
                     }
                     QGCRadioButton {
                         width: 100
@@ -989,7 +989,7 @@ Rectangle {
                     // QGCCheckBox
                     Loader {
                         sourceComponent: ctlRowHeader
-                        property var text: "QGCCheckBox"
+                        property string text: "QGCCheckBox"
                     }
                     QGCCheckBox {
                         width: 100
@@ -1006,7 +1006,7 @@ Rectangle {
                     // QGCTextField
                     Loader {
                         sourceComponent: ctlRowHeader
-                        property var text: "QGCTextField"
+                        property string text: "QGCTextField"
                     }
                     QGCTextField {
                         width: 100
@@ -1023,7 +1023,7 @@ Rectangle {
                     // QGCComboBox
                     Loader {
                         sourceComponent: ctlRowHeader
-                        property var text: "QGCComboBox"
+                        property string text: "QGCComboBox"
                     }
                     QGCComboBox {
                         width: 100
@@ -1040,7 +1040,7 @@ Rectangle {
                     // SubMenuButton
                     Loader {
                         sourceComponent: ctlRowHeader
-                        property var text: "SubMenuButton"
+                        property string text: "SubMenuButton"
                     }
                     SubMenuButton {
                         width: 100
@@ -1079,15 +1079,15 @@ Rectangle {
             spacing: 10
             anchors.horizontalCenter: parent.horizontalCenter
             Loader {
-                property var backgroundColor: qgcPal.window
+                property color backgroundColor: qgcPal.window
                 sourceComponent: arbBox
             }
             Loader {
-                property var backgroundColor: qgcPal.windowShade
+                property color backgroundColor: qgcPal.windowShade
                 sourceComponent: arbBox
             }
             Loader {
-                property var backgroundColor: qgcPal.windowShadeDark
+                property color backgroundColor: qgcPal.windowShadeDark
                 sourceComponent: arbBox
             }
         }

src/VehicleSetup/FirmwareUpgrade.qml

@@ -56,7 +56,7 @@ SetupPage {
             readonly property int _defaultFimwareTypeAPM:   3
 
             property var    _defaultFirmwareFact:   QGroundControl.settingsManager.appSettings.defaultFirmwareType
-            property bool   _defaultFirmwareIsPX4:  _defaultFirmwareFact.rawValue == _defaultFimwareTypePX4
+            property bool   _defaultFirmwareIsPX4:  _defaultFirmwareFact.rawValue === _defaultFimwareTypePX4
 
             property string firmwareWarningMessage
             property bool   controllerCompleted:      false
@@ -354,13 +354,13 @@ SetupPage {
 
                             onActivated: {
                                 controller.selectedFirmwareType = index
-                                if (model.get(index).firmwareType == FirmwareUpgradeController.BetaFirmware) {
+                                if (model.get(index).firmwareType === FirmwareUpgradeController.BetaFirmware) {
                                     firmwareVersionWarningLabel.visible = true
                                     firmwareVersionWarningLabel.text = qsTr("WARNING: BETA FIRMWARE. ") +
                                             qsTr("This firmware version is ONLY intended for beta testers. ") +
                                             qsTr("Although it has received FLIGHT TESTING, it represents actively changed code. ") +
                                             qsTr("Do NOT use for normal operation.")
-                                } else if (model.get(index).firmwareType == FirmwareUpgradeController.DeveloperFirmware) {
+                                } else if (model.get(index).firmwareType === FirmwareUpgradeController.DeveloperFirmware) {
                                     firmwareVersionWarningLabel.visible = true
                                     firmwareVersionWarningLabel.text = qsTr("WARNING: CONTINUOUS BUILD FIRMWARE. ") +
                                             qsTr("This firmware has NOT BEEN FLIGHT TESTED. ") +

src/VehicleSetup/VehicleSummary.qml

@@ -128,12 +128,12 @@ Rectangle {
                                 height:                 width
                                 radius:                 width / 2
                                 color:                  modelData.setupComplete ? "#00d932" : "red"
-                                visible:                modelData.requiresSetup && modelData.setupSource != ""
+                                visible:                modelData.requiresSetup && modelData.setupSource !== ""
                             }
 
                             onClicked : {
                                 console.log(modelData.setupSource)
-                                if (modelData.setupSource != "") {
+                                if (modelData.setupSource !== "") {
                                     setupView.showVehicleComponentPanel(modelData)
                                 }
                             }

src/ViewWidgets/ViewWidget.qml

@@ -2,8 +2,10 @@ import QtQuick 2.3
 import QtQuick.Controls 1.2
 import QtQuick.Controls.Styles 1.4
 
-import QGroundControl.Palette 1.0
+import QGroundControl               1.0
+import QGroundControl.Controls      1.0
 import QGroundControl.Controllers   1.0
+import QGroundControl.Palette       1.0
 
 Rectangle {
     property Component connectedComponent: __componentConnected