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, 9 insertions, 8 deletions

diff --git a/altosui/AltosIdleMonitorUI.java b/altosui/AltosIdleMonitorUI.java
index b5652df3..042111ec 100644
--- a/altosui/AltosIdleMonitorUI.java
+++ b/altosui/AltosIdleMonitorUI.java
@@ -27,7 +27,7 @@ import java.util.Arrays;
 import org.altusmetrum.altoslib_4.*;
 import org.altusmetrum.altosuilib_2.*;
 
-public class AltosIdleMonitorUI extends AltosUIFrame implements AltosFlightDisplay, AltosFontListener, AltosIdleMonitorListener, DocumentListener {
+public class AltosIdleMonitorUI extends AltosUIFrame implements AltosFlightDisplay, AltosIdleMonitorListener, DocumentListener {
 	AltosDevice		device;
 	JTabbedPane		pane;
 	AltosPad		pad;
@@ -56,13 +56,14 @@ public class AltosIdleMonitorUI extends AltosUIFrame implements AltosFlightDispl
 		flightInfo.clear();
 	}
 
-	public void set_font() {
-		pad.set_font();
-		flightInfo.set_font();
+	public void font_size_changed(int font_size) {
+		pad.font_size_changed(font_size);
+		flightInfo.font_size_changed(font_size);
 	}
 
-	public void font_size_changed(int font_size) {
-		set_font();
+	public void units_changed(boolean imperial_units) {
+		pad.units_changed(imperial_units);
+		flightInfo.units_changed(imperial_units);
 	}
 
 	AltosFlightStatusUpdate	status_update;
@@ -235,8 +236,8 @@ public class AltosIdleMonitorUI extends AltosUIFrame implements AltosFlightDispl
 						disconnect();
 					} catch (Exception ex) {
 						System.out.printf("Exception %s\n", ex.toString());
-						for (StackTraceElement e : ex.getStackTrace())
-							System.out.printf("%s\n", e.toString());
+						for (StackTraceElement el : ex.getStackTrace())
+							System.out.printf("%s\n", el.toString());
 					}
 					setVisible(false);
 					dispose();