Fix several issues with APM using the new UI model.

src/AutoPilotPlugins/APM/APMAirframeComponent.qml

@@ -62,10 +62,7 @@ SetupPage {
                 }
             }
 
-            APMAirframeComponentController {
-                id:         controller
-                factPanel:  airframePage.viewPanel
-            }
+            APMAirframeComponentController { id: controller; }
 
             QGCLabel {
                 id:                 helpText

src/AutoPilotPlugins/APM/APMAirframeComponentSummary.qml

@@ -7,16 +7,10 @@ import QGroundControl.Controls 1.0
 import QGroundControl.Controllers 1.0
 import QGroundControl.Palette 1.0
 
-FactPanel {
-    id:             panel
+Item {
     anchors.fill:       parent
-    color:          qgcPal.windowShadeDark
 
-    QGCPalette { id: qgcPal; colorGroupEnabled: enabled }
-    APMAirframeComponentController {
-        id:         controller
-        factPanel:  panel
-    }
+    APMAirframeComponentController {id: controller; }
 
     property Fact _frameClass:          controller.getParameterFact(-1, "FRAME_CLASS")
     property Fact _frameType:           controller.getParameterFact(-1, "FRAME_TYPE", false)

src/AutoPilotPlugins/APM/APMCameraSubComponent.qml

@@ -165,17 +165,17 @@ SetupPage {
             // Whenever an MNT_RC_IN_* setting is changed make sure to turn on RC targeting
             Connections {
                 target:         _mountRCInPan
-                onValueChanged: _mountDefaultMode.value = _mountDefaultModeRCTargetting
+                onValueChanged: if(_mountDefaultMode) _mountDefaultMode.value = _mountDefaultModeRCTargetting
             }
 
             Connections {
                 target:         _mountRCInRoll
-                onValueChanged: _mountDefaultMode.value = _mountDefaultModeRCTargetting
+                onValueChanged: if(_mountDefaultMode) _mountDefaultMode.value = _mountDefaultModeRCTargetting
             }
 
             Connections {
                 target:         _mountRCInTilt
-                onValueChanged: _mountDefaultMode.value = _mountDefaultModeRCTargetting
+                onValueChanged: if(_mountDefaultMode) _mountDefaultMode.value = _mountDefaultModeRCTargetting
             }
 
             ListModel {

src/AutoPilotPlugins/APM/APMLightsComponent.qml

@@ -29,9 +29,7 @@ SetupPage {
             spacing:    _margins
             width:      availableWidth
 
-            FactPanelController { id: controller; factPanel: lightsPage.viewPanel }
-
-            QGCPalette { id: palette; colorGroupEnabled: true }
+            FactPanelController { id: controller; }
 
             property var  _activeVehicle:       QGroundControl.multiVehicleManager.activeVehicle
             property bool _oldFW:               _activeVehicle.versionCompare(3, 5, 2) < 0
@@ -176,7 +174,7 @@ SetupPage {
                         anchors.top:        settingsLabel.bottom
                         width:              lights1Combo.x + lights1Combo.width + lightsStepCombo.width + _margins
                         height:             lights2Combo.y + lights2Combo.height + lightsStepCombo.height + 2*_margins
-                        color:              palette.windowShade
+                        color:              qgcPal.windowShade
 
                         QGCLabel {
                             id:                 lights1Label

src/AutoPilotPlugins/APM/APMPowerComponent.qml

@@ -252,13 +252,13 @@ SetupPage {
 
                                 QGCButton {
                                     text: qsTr("Calibrate")
-                                    enabled:    _escCalibration.rawValue === 0
-                                    onClicked:  _escCalibration.rawValue = 3
+                                    enabled:    _escCalibration && _escCalibration.rawValue === 0
+                                    onClicked:  if(_escCalibration) _escCalibration.rawValue = 3
                                 }
 
                                 Column {
-                                    enabled: _escCalibration.rawValue === 3
-                                    QGCLabel { text:   _escCalibration.rawValue === 3 ? qsTr("Now perform these steps:") : qsTr("Click Calibrate to start, then:") }
+                                    enabled: _escCalibration && _escCalibration.rawValue === 3
+                                    QGCLabel { text:   _escCalibration ? (_escCalibration.rawValue === 3 ? qsTr("Now perform these steps:") : qsTr("Click Calibrate to start, then:")) : "" }
                                     QGCLabel { text:   qsTr("- Disconnect USB and battery so flight controller powers down") }
                                     QGCLabel { text:   qsTr("- Connect the battery") }
                                     QGCLabel { text:   qsTr("- The arming tone will be played (if the vehicle has a buzzer attached)") }

src/AutoPilotPlugins/APM/APMPowerComponentSummary.qml

@@ -17,7 +17,6 @@ import QGroundControl.Palette       1.0
 
 Item {
     anchors.fill:   parent
-    color:          qgcPal.windowShadeDark
 
     FactPanelController { id: controller; }
 

src/AutoPilotPlugins/APM/APMRadioComponentSummary.qml

@@ -8,9 +8,7 @@ import QGroundControl.Palette 1.0
 
 Item {
     anchors.fill:   parent
-    color:          qgcPal.windowShadeDark
 
-    QGCPalette { id: qgcPal; colorGroupEnabled: enabled }
     FactPanelController { id: controller; }
 
     property Fact mapRollFact:      controller.getParameterFact(-1, "RCMAP_ROLL")

src/AutoPilotPlugins/APM/APMSafetyComponentSummary.qml

@@ -32,14 +32,14 @@ Item {
 
         VehicleSummaryRow {
             labelText: qsTr("Arming Checks:")
-            valueText: fact.value & 1 ? qsTr("Enabled") : qsTr("Some disabled")
+            valueText: fact ? (fact.value & 1 ? qsTr("Enabled") : qsTr("Some disabled")) : ""
 
             property Fact fact: controller.getParameterFact(-1, "ARMING_CHECK")
         }
 
         VehicleSummaryRow {
             labelText:  qsTr("Throttle failsafe:")
-            valueText:  fact.enumStringValue
+            valueText:  fact ? fact.enumStringValue : ""
             visible:    controller.vehicle.multiRotor
 
             property Fact fact: controller.getParameterFact(-1, "FS_THR_ENABLE", false /* reportMissing */)
@@ -47,7 +47,7 @@ Item {
 
         VehicleSummaryRow {
             labelText:  qsTr("Throttle failsafe:")
-            valueText:  fact.enumStringValue
+            valueText:  fact ? fact.enumStringValue : ""
             visible:    controller.vehicle.fixedWing
 
             property Fact fact: controller.getParameterFact(-1, "THR_FAILSAFE", false /* reportMissing */)
@@ -55,7 +55,7 @@ Item {
 
         VehicleSummaryRow {
             labelText:  qsTr("Throttle failsafe:")
-            valueText:  fact.enumStringValue
+            valueText:  fact ? fact.enumStringValue : ""
             visible:    controller.vehicle.rover
 
             property Fact fact: controller.getParameterFact(-1, "FS_THR_ENABLE", false /* reportMissing */)
@@ -63,7 +63,7 @@ Item {
 
         VehicleSummaryRow {
             labelText:  qsTr("Failsafe Action:")
-            valueText:  fact.enumStringValue
+            valueText:  fact ? fact.enumStringValue : ""
             visible:    controller.vehicle.rover
 
             property Fact fact: controller.getParameterFact(-1, "FS_ACTION", false /* reportMissing */)
@@ -71,7 +71,7 @@ Item {
 
         VehicleSummaryRow {
             labelText:  qsTr("Failsafe Crash Check:")
-            valueText:  fact.enumStringValue
+            valueText:  fact ? fact.enumStringValue : ""
             visible:    controller.vehicle.rover
 
             property Fact fact: controller.getParameterFact(-1, "FS_CRASH_CHECK", false /* reportMissing */)
@@ -103,11 +103,22 @@ Item {
 
         VehicleSummaryRow {
             labelText: qsTr("GeoFence:")
-            valueText: _copterFenceEnable.value == 0 || _copterFenceType == 0 ?
-                           qsTr("Disabled") :
-                           (_copterFenceType.value == 1 ?
-                                qsTr("Altitude") :
-                                (_copterFenceType.value == 2 ? qsTr("Circle") : qsTr("Altitude,Circle")))
+            valueText: {
+                if(_copterFenceEnable && _copterFenceType) {
+                    if(_copterFenceEnable.value == 0 || _copterFenceType == 0) {
+                        return qsTr("Disabled")
+                    } else {
+                        if(_copterFenceType.value == 1) {
+                            return qsTr("Altitude")
+                        }
+                        if(_copterFenceType.value == 2) {
+                            return qsTr("Circle")
+                        }
+                        return qsTr("Altitude,Circle")
+                    }
+                }
+                return ""
+            }
             visible: controller.vehicle.multiRotor
         }
 
@@ -121,7 +132,7 @@ Item {
 
         VehicleSummaryRow {
             labelText:  qsTr("RTL min alt:")
-            valueText:  fact.value == 0 ? qsTr("current") : fact.valueString + " " + fact.units
+            valueText:  fact ? (fact.value == 0 ? qsTr("current") : fact.valueString + " " + fact.units) : ""
             visible:    controller.vehicle.multiRotor
 
             property Fact fact: controller.getParameterFact(-1, "RTL_ALT", false /* reportMissing */)
@@ -129,7 +140,7 @@ Item {
 
         VehicleSummaryRow {
             labelText:  qsTr("RTL min alt:")
-            valueText: fact.value < 0 ? qsTr("current") : fact.valueString + " " + fact.units
+            valueText:  fact ? (fact.value < 0 ? qsTr("current") : fact.valueString + " " + fact.units) : ""
             visible:    controller.vehicle.fixedWing
 
             property Fact fact: controller.getParameterFact(-1, "ALT_HOLD_RTL", false /* reportMissing */)

src/AutoPilotPlugins/APM/APMSensorsComponentSummary.qml

@@ -15,7 +15,6 @@ import QGroundControl.ArduPilot     1.0
 
 Item {
     anchors.fill:   parent
-    color:          qgcPal.windowShadeDark
 
     APMSensorsComponentController { id: controller; }
 

src/AutoPilotPlugins/APM/APMTuningComponent.h

@@ -18,7 +18,7 @@ class APMTuningComponent : public VehicleComponent
     Q_OBJECT
     
 public:
-    APMTuningComponent(Vehicle* vehicle, AutoPilotPlugin* autopilot, QObject* parent = NULL);
+    APMTuningComponent(Vehicle* vehicle, AutoPilotPlugin* autopilot, QObject* parent = nullptr);
     
     // Virtuals from VehicleComponent
     QStringList setupCompleteChangedTriggerList(void) const final;

src/AutoPilotPlugins/APM/APMTuningComponentCopter.qml

@@ -28,7 +28,7 @@ SetupPage {
         Column {
             width: availableWidth
 
-            QGCPalette { id: palette; colorGroupEnabled: true }
+            FactPanelController { id: controller; }
 
             property bool _atcInputTCAvailable: controller.parameterExists(-1, "ATC_INPUT_TC")
             property Fact _atcInputTC:          controller.getParameterFact(-1, "ATC_INPUT_TC", false)
@@ -133,7 +133,7 @@ SetupPage {
                     anchors.left:       parent.left
                     anchors.right:      parent.right
                     height:             basicTuningColumn.y + basicTuningColumn.height + _margins
-                    color:              palette.windowShade
+                    color:              qgcPal.windowShade
 
                     Column {
                         id:                 basicTuningColumn
@@ -284,7 +284,7 @@ SetupPage {
 
                             QGCLabel {
                                 text:       qsTr("Warning: This setting should be higher than 'Spin While Armed'")
-                                color:      palette.warningText
+                                color:      qgcPal.warningText
                                 visible:    _motSpinMin.rawValue < _motSpinArm.rawValue
                             }
 
@@ -315,7 +315,7 @@ SetupPage {
                     Rectangle {
                         height: autoTuneLabel.height + autoTuneRect.height
                         width:  autoTuneRect.width
-                        color:  palette.window
+                        color:  qgcPal.window
 
                         QGCLabel {
                             id:                 autoTuneLabel
@@ -328,7 +328,7 @@ SetupPage {
                             width:          autoTuneColumn.x + autoTuneColumn.width + _margins
                             height:         autoTuneColumn.y + autoTuneColumn.height + _margins
                             anchors.top:    autoTuneLabel.bottom
-                            color:          palette.windowShade
+                            color:          qgcPal.windowShade
 
                             Column {
                                 id:                 autoTuneColumn
@@ -375,7 +375,7 @@ SetupPage {
                     Rectangle {
                         height:     inFlightTuneLabel.height + channel6TuningOption.height
                         width:      channel6TuningOption.width
-                        color:      palette.window
+                        color:      qgcPal.window
 
                         QGCLabel {
                             id:                 inFlightTuneLabel

src/FactSystem/FactControls/FactBitmask.qml

@@ -25,7 +25,7 @@ Flow {
 
     Repeater {
         id:     repeater
-        model:  fact.bitmaskStrings
+        model:  fact ? fact.bitmaskStrings : []
 
         QGCCheckBox {
             id:         checkbox

src/QmlControls/RCChannelMonitor.qml

@@ -59,7 +59,7 @@ Item {
             // Center point
             Rectangle {
                 anchors.horizontalCenter:   parent.horizontalCenter
-                width:                      ScreenTools.ScreenTools.defaultFontPixelWidth / 2
+                width:                      ScreenTools.defaultFontPixelWidth / 2
                 height:                     parent.height
                 color:                      qgcPal.window
             }