java: Refactor AltosFlightDisplay units and font update handling

Make AltosFlightDisplay explicitly implement AltosFontListener and
AltosUnitsListener interfaces to make everyone use the same API. Then,
actually go implement units listeners so that changing units updates
all of the active displays immediately

Signed-off-by: Keith Packard <keithp@keithp.com>

1 files changed, 10 insertions, 7 deletions

diff --git a/telegps/TeleGPSStatus.java b/telegps/TeleGPSStatus.java
index fd66b279..37cfae37 100644
--- a/telegps/TeleGPSStatus.java
+++ b/telegps/TeleGPSStatus.java
@@ -25,7 +25,7 @@ import org.altusmetrum.altosuilib_2.*;
 public class TeleGPSStatus extends JComponent implements AltosFlightDisplay {
 	GridBagLayout	layout;
 
-	public class FlightValue {
+	public class Value {
 		JLabel		label;
 		JTextField	value;
 
@@ -45,7 +45,7 @@ public class TeleGPSStatus extends JComponent implements AltosFlightDisplay {
 			value.setVisible(visible);
 		}
 
-		public FlightValue (GridBagLayout layout, int x, String text) {
+		public Value (GridBagLayout layout, int x, String text) {
 			GridBagConstraints	c = new GridBagConstraints();
 			c.insets = new Insets(5, 5, 5, 5);
 			c.anchor = GridBagConstraints.CENTER;
@@ -69,7 +69,7 @@ public class TeleGPSStatus extends JComponent implements AltosFlightDisplay {
 		}
 	}
 
-	class Call extends FlightValue {
+	class Call extends Value {
 		void show(AltosState state, AltosListenerState listener_state) {
 			value.setText(state.callsign);
 			if (state.callsign == null)
@@ -84,7 +84,7 @@ public class TeleGPSStatus extends JComponent implements AltosFlightDisplay {
 
 	Call call;
 
-	class Serial extends FlightValue {
+	class Serial extends Value {
 		void show(AltosState state, AltosListenerState listener_state) {
 			if (state.serial == AltosLib.MISSING)
 				value.setText("none");
@@ -98,7 +98,7 @@ public class TeleGPSStatus extends JComponent implements AltosFlightDisplay {
 
 	Serial serial;
 
-	class RSSI extends FlightValue {
+	class RSSI extends Value {
 		void show(AltosState state, AltosListenerState listener_state) {
 			value.setText(String.format("%d", state.rssi()));
 			if (state.rssi == AltosLib.MISSING)
@@ -113,7 +113,7 @@ public class TeleGPSStatus extends JComponent implements AltosFlightDisplay {
 
 	RSSI rssi;
 
-	class LastPacket extends FlightValue {
+	class LastPacket extends Value {
 		void show(AltosState state, AltosListenerState listener_state) {
 			long secs = (System.currentTimeMillis() - state.received_time + 500) / 1000;
 			value.setText(String.format("%d", secs));
@@ -132,13 +132,16 @@ public class TeleGPSStatus extends JComponent implements AltosFlightDisplay {
 		last_packet.reset();
 	}
 
-	public void set_font () {
+	public void font_size_changed(int font_size) {
 		call.set_font();
 		serial.set_font();
 		rssi.set_font();
 		last_packet.set_font();
 	}
 
+	public void units_changed(boolean imperial_units) {
+	}
+
 	public void show (AltosState state, AltosListenerState listener_state) {
 		call.show(state, listener_state);
 		serial.show(state, listener_state);