Fix camera section showing on wrong commands

Update unit tests to catch this

src/MissionManager/MissionControllerTest.cc

@@ -224,3 +224,27 @@ void MissionControllerTest::_testGimbalRecalc(void)
         QCOMPARE(visualItem->missionGimbalYaw(), 0.0);
     }
 }
+
+void MissionControllerTest::_testLoadJsonSectionAvailable(void)
+{
+    _initForFirmwareType(MAV_AUTOPILOT_PX4);
+    _masterController->loadFromFile(":/unittest/SectionTest.plan");
+
+    QmlObjectListModel* visualItems = _missionController->visualItems();
+    QVERIFY(visualItems);
+    QCOMPARE(visualItems->count(), 5);
+
+    // Check that only waypoint items have camera and speed sections
+    for (int i=1; i<visualItems->count(); i++) {
+        SimpleMissionItem* item = visualItems->value<SimpleMissionItem*>(i);
+        QVERIFY(item);
+        if ((int)item->command() == MAV_CMD_NAV_WAYPOINT) {
+            QCOMPARE(item->cameraSection()->available(), true);
+            QCOMPARE(item->speedSection()->available(), true);
+        } else {
+            QCOMPARE(item->cameraSection()->available(), false);
+            QCOMPARE(item->speedSection()->available(), false);
+        }
+
+    }
+}

src/MissionManager/MissionControllerTest.h

@@ -33,12 +33,13 @@ private slots:
     void cleanup(void);
 
     void _testGimbalRecalc(void);
-
-private:
+    void _testLoadJsonSectionAvailable(void);
     void _testEmptyVehicleAPM(void);
     void _testEmptyVehiclePX4(void);
     void _testAddWayppointAPM(void);
     void _testAddWayppointPX4(void);
+
+private:
 #if 0
     void _testOfflineToOnlineAPM(void);
     void _testOfflineToOnlinePX4(void);

src/MissionManager/PlanMasterController.cc

@@ -246,6 +246,7 @@ void PlanMasterController::loadFromFile(const QString& filename)
 
     if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
         errorString = file.errorString() + QStringLiteral(" ") + filename;
+        qgcApp()->showMessage(errorMessage.arg(errorString));
         return;
     }
 

src/MissionManager/SimpleMissionItem.cc

@@ -278,12 +278,20 @@ void SimpleMissionItem::save(QJsonArray&  missionItems)
 
 bool SimpleMissionItem::load(QTextStream &loadStream)
 {
-    return _missionItem.load(loadStream);
+    bool success;
+    if ((success = _missionItem.load(loadStream))) {
+        _updateOptionalSections();
+    }
+    return success;
 }
 
 bool SimpleMissionItem::load(const QJsonObject& json, int sequenceNumber, QString& errorString)
 {
-    return _missionItem.load(json, sequenceNumber, errorString);
+    bool success;
+    if ((success = _missionItem.load(json, sequenceNumber, errorString))) {
+        _updateOptionalSections();
+    }
+    return success;
 }
 
 bool SimpleMissionItem::isStandaloneCoordinate(void) const
@@ -755,6 +763,7 @@ void SimpleMissionItem::_updateOptionalSections(void)
 
     emit cameraSectionChanged(_cameraSection);
     emit speedSectionChanged(_speedSection);
+    emit lastSequenceNumberChanged(lastSequenceNumber());
 }
 
 int SimpleMissionItem::lastSequenceNumber(void) const

src/MissionManager/UnitTest/SectionTest.plan

@@ -0,0 +1,119 @@
+{
+    "fileType": "Plan",
+    "geoFence": {
+        "polygon": [
+        ],
+        "version": 1
+    },
+    "groundStation": "QGroundControl",
+    "mission": {
+        "cruiseSpeed": 15,
+        "firmwareType": 12,
+        "hoverSpeed": 5,
+        "items": [
+            {
+                "autoContinue": true,
+                "command": 22,
+                "coordinate": [
+                    47.63311996,
+                    -122.090763,
+                    20
+                ],
+                "doJumpId": 1,
+                "frame": 3,
+                "params": [
+                    0,
+                    0,
+                    0,
+                    null
+                ],
+                "type": "SimpleItem"
+            },
+            {
+                "autoContinue": true,
+                "command": 16,
+                "coordinate": [
+                    47.63369112,
+                    -122.08925023,
+                    20
+                ],
+                "doJumpId": 2,
+                "frame": 3,
+                "params": [
+                    0,
+                    0,
+                    0,
+                    null
+                ],
+                "type": "SimpleItem"
+            },
+            {
+                "autoContinue": true,
+                "command": 16,
+                "coordinate": [
+                    47.63345253,
+                    -122.08725467,
+                    20
+                ],
+                "doJumpId": 3,
+                "frame": 3,
+                "params": [
+                    0,
+                    0,
+                    0,
+                    null
+                ],
+                "type": "SimpleItem"
+            },
+            {
+                "autoContinue": true,
+                "command": 205,
+                "coordinate": [
+                    0,
+                    0,
+                    2
+                ],
+                "doJumpId": 4,
+                "frame": 2,
+                "params": [
+                    0,
+                    0,
+                    0,
+                    0
+                ],
+                "type": "SimpleItem"
+            },
+            {
+                "autoContinue": true,
+                "command": 16,
+                "coordinate": [
+                    47.63261386,
+                    -122.08661094,
+                    20
+                ],
+                "doJumpId": 5,
+                "frame": 3,
+                "params": [
+                    0,
+                    0,
+                    0,
+                    null
+                ],
+                "type": "SimpleItem"
+            }
+        ],
+        "plannedHomePosition": [
+            47.633389756176875,
+            -122.09076300000001,
+            20
+        ],
+        "vehicleType": 2,
+        "version": 2
+    },
+    "rallyPoints": {
+        "points": [
+        ],
+        "version": 1
+    },
+    "version": 1
+}