+ /** Update one-shot things when WP1 / leg data change */
+ void wp1Changed();
+
+// scratch maintenance utilities
+ void setScratchFromPositioned(FGPositioned* aPos, int aIndex);
+ void setScratchFromCachedSearchResult();
+ void setScratchFromRouteWaypoint(int aIndex);
+
+ /** Add airport-specific information to a scratch result */
+ void addAirportToScratch(FGAirport* aAirport);
+
+ void clearScratch();
+
+ /** Predicate, determine if the lon/lat position in the scratch is
+ * valid or not. */
+ bool isScratchPositionValid() const;
+
+ FGPositioned::Filter* createFilter(FGPositioned::Type aTy);
+
+ /** Search kernel - called each time we step through a result */
+ void performSearch();
+
+// command handlers
+ void selectLegMode();
+ void selectOBSMode();
+ void directTo();
+ void loadRouteWaypoint();
+ void loadNearest();
+ void search();
+ void nextResult();
+ void previousResult();
+ void defineWaypoint();
+ void insertWaypointAtIndex(int aIndex);
+ void removeWaypointAtIndex(int aIndex);
+
+// tied-property getter/setters
+ void setCommand(const char* aCmd);
+ const char* getCommand() const { return ""; }
+
+ const char* getMode() const { return _mode.c_str(); }
+
+ bool getScratchValid() const { return _scratchValid; }
+ double getScratchDistance() const;
+ double getScratchMagBearing() const;
+ double getScratchTrueBearing() const;
+ bool getScratchHasNext() const;
+
+ double getSelectedCourse() const { return _selectedCourse; }
+ void setSelectedCourse(double crs);
+ double getDesiredCourse() const { return _desiredCourse; }
+
+ double getCDIDeflection() const;
+
+ double getLegDistance() const;
+ double getLegCourse() const;
+ double getLegMagCourse() const;
+
+ double getTrueTrack() const { return _last_true_track; }
+ double getMagTrack() const;
+ double getGroundspeedKts() const { return _last_speed_kts; }
+ double getVerticalSpeed() const { return _last_vertical_speed; }
+
+ //bool getLegMode() const { return _mode == "leg"; }
+ //bool getObsMode() const { return _mode == "obs"; }
+
+ const char* getWP0Ident() const;
+ const char* getWP0Name() const;
+
+ const char* getWP1Ident() const;
+ const char* getWP1Name() const;
+
+ double getWP1Distance() const;
+ double getWP1TTW() const;
+ const char* getWP1TTWString() const;
+ double getWP1Bearing() const;
+ double getWP1MagBearing() const;
+ double getWP1CourseDeviation() const;
+ double getWP1CourseErrorNm() const;
+ bool getWP1ToFlag() const;
+ bool getWP1FromFlag() const;
+
+ // true-bearing-error and mag-bearing-error
+
+
+ /**
+ * Tied-properties helper, record nodes which are tied for easy un-tie-ing
+ */
+ template <typename T>
+ void tie(SGPropertyNode* aNode, const char* aRelPath, const SGRawValue<T>& aRawValue)
+ {
+ _tiedProperties.Tie(aNode->getNode(aRelPath, true), aRawValue);
+ }
+
+ /** helper, tie the lat/lon/elev of a SGGeod to the named children of aNode */
+ void tieSGGeod(SGPropertyNode* aNode, SGGeod& aRef,
+ const char* lonStr, const char* latStr, const char* altStr);
+
+ /** helper, tie a SGGeod to proeprties, but read-only */
+ void tieSGGeodReadOnly(SGPropertyNode* aNode, SGGeod& aRef,
+ const char* lonStr, const char* latStr, const char* altStr);
+
+// members
+ SGPropertyNode_ptr _gpsNode;
+ SGPropertyNode_ptr _currentWayptNode;