Allow use of AutoConnect and HighLatency options for most link types. (#9117)

* Allow use of AutoConnect and HighLatency options for most link types.

* Remove isAutoConnectAllowed and isHighLatencyAllowed methods and assocated Q_PROPERTYs from LinkConfiguration class.  Allow user to configure these properties on all link types.

src/comm/LinkConfiguration.h

@@ -30,11 +30,9 @@ public:
     Q_PROPERTY(LinkType         linkType            READ type                                   CONSTANT)
     Q_PROPERTY(bool             dynamic             READ isDynamic      WRITE setDynamic        NOTIFY dynamicChanged)
     Q_PROPERTY(bool             autoConnect         READ isAutoConnect  WRITE setAutoConnect    NOTIFY autoConnectChanged)
-    Q_PROPERTY(bool             autoConnectAllowed  READ isAutoConnectAllowed                   CONSTANT)
     Q_PROPERTY(QString          settingsURL         READ settingsURL                            CONSTANT)
     Q_PROPERTY(QString          settingsTitle       READ settingsTitle                          CONSTANT)
     Q_PROPERTY(bool             highLatency         READ isHighLatency  WRITE setHighLatency    NOTIFY highLatencyChanged)
-    Q_PROPERTY(bool             highLatencyAllowed  READ isHighLatencyAllowed                   CONSTANT)
 
     // Property accessors
 
@@ -90,20 +88,6 @@ public:
 
     /// Virtual Methods
 
-    /*!
-     *
-     * Is Auto Connect allowed for this type?
-     * @return True if this type can be set as an Auto Connect configuration
-     */
-    virtual bool isAutoConnectAllowed() { return false; }
-
-    /*!
-     *
-     * Is High Latency allowed for this type?
-     * @return True if this type can be set as an High Latency configuration
-     */
-    virtual bool isHighLatencyAllowed() { return false; }
-
     /*!
      * @brief Connection type
      *

src/comm/SerialLink.h

@@ -76,7 +76,6 @@ public:
     /// From LinkConfiguration
     LinkType    type            () { return LinkConfiguration::TypeSerial; }
     void        copyFrom        (LinkConfiguration* source);
-    bool        isHighLatencyAllowed () { return true; }
     void        loadSettings    (QSettings& settings, const QString& root);
     void        saveSettings    (QSettings& settings, const QString& root);
     void        updateSettings  ();

src/comm/TCPLink.h

@@ -52,7 +52,6 @@ public:
     //LinkConfiguration overrides
     LinkType    type                (void) override                                         { return LinkConfiguration::TypeTcp; }
     void        copyFrom            (LinkConfiguration* source) override;
-    bool        isHighLatencyAllowed(void) override                                         { return true; }
     void        loadSettings        (QSettings& settings, const QString& root) override;
     void        saveSettings        (QSettings& settings, const QString& root) override;
     QString     settingsURL         (void) override                                         { return "TcpSettings.qml"; }

src/comm/UDPLink.h

@@ -75,8 +75,6 @@ public:
     void        copyFrom             (LinkConfiguration* source) override;
     void        loadSettings         (QSettings& settings, const QString& root) override;
     void        saveSettings         (QSettings& settings, const QString& root) override;
-    bool        isAutoConnectAllowed (void) override                                        { return true; }
-    bool        isHighLatencyAllowed (void) override                                        { return true; }
     QString     settingsURL          (void) override                                        { return "UdpSettings.qml"; }
     QString     settingsTitle        (void) override                                        { return tr("UDP Link Settings"); }
 

src/ui/preferences/LinkSettings.qml

@@ -300,7 +300,6 @@ Rectangle {
                             QGCCheckBox {
                                 text:               qsTr("Automatically Connect on Start")
                                 checked:            false
-                                enabled:            editConfig ? editConfig.autoConnectAllowed : false
                                 onCheckedChanged: {
                                     if(editConfig) {
                                         editConfig.autoConnect = checked
@@ -314,7 +313,6 @@ Rectangle {
                             QGCCheckBox {
                                 text:               qsTr("High Latency")
                                 checked:            false
-                                enabled:            editConfig ? editConfig.highLatencyAllowed : false
                                 onCheckedChanged: {
                                     if(editConfig) {
                                         editConfig.highLatency = checked