Mobile: only show dive computers in the Bluetooth connection list

And offer an option to show all devices in the settings. This is intentionally
not stored in the preferences as this should never be needed. We don't support
BT or BLE dive computers that we don't recognize. This is a last resort in case
a new firmware were to change the name or some other weird issue causes us not
to recognize a dive computer - and that should be fixed instead of worked
around.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

core/btdiscovery.cpp

@@ -91,6 +91,7 @@ bool matchesKnownDiveComputerNames(QString btName)
 }
 
 BTDiscovery::BTDiscovery(QObject*) : m_btValid(false),
+	m_showNonDiveComputers(false),
 	discoveryAgent(nullptr)
 {
 	if (m_instance) {
@@ -104,6 +105,11 @@ BTDiscovery::BTDiscovery(QObject*) : m_btValid(false),
 #endif
 }
 
+void BTDiscovery::showNonDiveComputers(bool show)
+{
+	m_showNonDiveComputers = show;
+}
+
 void BTDiscovery::BTDiscoveryReDiscover()
 {
 #if !defined(Q_OS_IOS)
@@ -232,7 +238,9 @@ void BTDiscovery::btDeviceDiscoveredMain(const btPairedDevice &device)
 		connectionListModel.addAddress(newDevice + " " + device.address);
 		return;
 	}
-	connectionListModel.addAddress(device.address);
+	// Do we want only devices we recognize as dive computers?
+	if (m_showNonDiveComputers)
+		connectionListModel.addAddress(device.address);
 	qDebug() << "Not recognized as dive computer";
 }
 

core/btdiscovery.h

@@ -46,6 +46,8 @@ public:
 	void btDeviceDiscovered(const QBluetoothDeviceInfo &device);
 	void btDeviceDiscoveredMain(const btPairedDevice &device);
 	bool btAvailable() const;
+	void showNonDiveComputers(bool show);
+
 #if defined(Q_OS_ANDROID)
 	void getBluetoothDevices();
 #endif
@@ -57,6 +59,7 @@ public:
 private:
 	static BTDiscovery *m_instance;
 	bool m_btValid;
+	bool m_showNonDiveComputers;
 
 	QList<struct btVendorProduct> btDCs;		// recognized DCs
 	QList<struct btVendorProduct> btAllDevices;	// all paired BT stuff

mobile-widgets/qml/Settings.qml

@@ -530,6 +530,41 @@ Kirigami.ScrollablePage {
 			Layout.fillWidth: true
 		}
 
+		GridLayout {
+			id: whichBluetoothDevices
+			columns: 2
+			Controls.Label {
+				text: qsTr("Bluetooth")
+				font.pointSize: subsurfaceTheme.headingPointSize
+				font.weight: Font.Light
+				color: subsurfaceTheme.textColor
+				Layout.topMargin: Kirigami.Units.largeSpacing
+				Layout.bottomMargin: Kirigami.Units.largeSpacing / 2
+				Layout.columnSpan: 2
+			}
+
+			Controls.Label {
+				text: qsTr("Show all bluetooth devices \neven if not recognized as dive computers")
+				font.pointSize: subsurfaceTheme.regularPointSize
+				Layout.preferredWidth: gridWidth * 0.75
+			}
+			SsrfSwitch {
+				id: nonDCButton
+				checked: manager.showNonDiveComputers
+				Layout.preferredWidth: gridWidth * 0.25
+				onClicked: {
+					manager.showNonDiveComputers = checked
+				}
+			}
+		}
+
+		Rectangle {
+			color: subsurfaceTheme.darkerPrimaryColor
+			height: 1
+			opacity: 0.5
+			Layout.fillWidth: true
+		}
+
 		GridLayout {
 			id: developer
 			columns: 2

mobile-widgets/qmlmanager.cpp

@@ -144,7 +144,8 @@ QMLManager::QMLManager() : m_locationServiceEnabled(false),
 	m_updateSelectedDive(-1),
 	m_selectedDiveTimestamp(0),
 	alreadySaving(false),
-	m_pluggedInDeviceName("")
+	m_pluggedInDeviceName(""),
+	m_showNonDiveComputers(false)
 {
 	LOG_STP("qmlmgr starting");
 	m_instance = this;
@@ -1979,6 +1980,12 @@ void QMLManager::setFilter(const QString filterText)
 			  });
 }
 
+void QMLManager::setShowNonDiveComputers(bool show)
+{
+	m_showNonDiveComputers = show;
+	BTDiscovery::instance()->showNonDiveComputers(show);
+}
+
 #if defined(Q_OS_ANDROID)
 // implemented in core/android.cpp
 void checkPendingIntents();

mobile-widgets/qmlmanager.h

@@ -48,6 +48,7 @@ class QMLManager : public QObject {
 	Q_PROPERTY(bool DC_saveDump READ DC_saveDump WRITE DC_setSaveDump)
 	Q_PROPERTY(int DC_deviceId READ DC_deviceId WRITE DC_setDeviceId)
 	Q_PROPERTY(QString pluggedInDeviceName MEMBER m_pluggedInDeviceName NOTIFY pluggedInDeviceNameChanged)
+	Q_PROPERTY(bool showNonDiveComputers MEMBER m_showNonDiveComputers WRITE setShowNonDiveComputers NOTIFY showNonDiveComputersChanged)
 public:
 	QMLManager();
 	~QMLManager();
@@ -126,6 +127,8 @@ public:
 	bool btEnabled() const;
 	void setBtEnabled(bool value);
 
+	void setShowNonDiveComputers(bool show);
+
 	DiveListSortModel *dlSortModel;
 
 	QStringList suitList() const;
@@ -234,6 +237,7 @@ private:
 	bool m_btEnabled;
 	void updateAllGlobalLists();
 	QString m_pluggedInDeviceName;
+	bool m_showNonDiveComputers;
 	struct dive *m_copyPasteDive = NULL;
 	struct dive_components what;
 
@@ -262,6 +266,7 @@ signals:
 	void locationListChanged();
 	void waitingForPositionChanged();
 	void pluggedInDeviceNameChanged();
+	void showNonDiveComputersChanged();
 };
 
 #endif