altosui: Handle serial-port startup errors in idle-monitor

Trap exceptions during idle monitor startup and report them.

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

diff --git a/altosui/AltosIdleMonitorUI.java b/altosui/AltosIdleMonitorUI.java
index 88779c93440295132b28ed87da472008c9a37cff..7ca935b654ee4a0a66444a7196297f60dc97d1b0 100644 (file)
--- a/altosui/AltosIdleMonitorUI.java
+++ b/altosui/AltosIdleMonitorUI.java
@@ -132,8 +132,35 @@ public class AltosIdleMonitorUI extends AltosUIFrame implements AltosFlightDispl
                return constraints(x, width, GridBagConstraints.NONE);
        }
 
+       void idle_exception(JFrame owner, Exception e) {
+               if (e instanceof FileNotFoundException) {
+                       JOptionPane.showMessageDialog(owner,
+                                                     ((FileNotFoundException) e).getMessage(),
+                                                     "Cannot open target device",
+                                                     JOptionPane.ERROR_MESSAGE);
+               } else if (e instanceof AltosSerialInUseException) {
+                       JOptionPane.showMessageDialog(owner,
+                                                     String.format("Device \"%s\" already in use",
+                                                                   device.toShortString()),
+                                                     "Device in use",
+                                                     JOptionPane.ERROR_MESSAGE);
+               } else if (e instanceof IOException) {
+                       IOException ee = (IOException) e;
+                       JOptionPane.showMessageDialog(owner,
+                                                     device.toShortString(),
+                                                     ee.getLocalizedMessage(),
+                                                     JOptionPane.ERROR_MESSAGE);
+               } else {
+                       JOptionPane.showMessageDialog(owner,
+                                                     String.format("Connection to \"%s\" failed",
+                                                                   device.toShortString()),
+                                                     "Connection Failed",
+                                                     JOptionPane.ERROR_MESSAGE);
+               }
+       }
+
        public AltosIdleMonitorUI(JFrame in_owner)
-               throws FileNotFoundException, AltosSerialInUseException, TimeoutException, InterruptedException {
+               throws FileNotFoundException, TimeoutException, InterruptedException {
 
                device = AltosDeviceUIDialog.show(in_owner, Altos.product_any);
                remote = false;
@@ -141,6 +168,15 @@ public class AltosIdleMonitorUI extends AltosUIFrame implements AltosFlightDispl
                        remote = true;
 
                serial = device.getSerial();
+
+               AltosLink link;
+               try {
+                       link = new AltosSerial(device);
+               } catch (Exception ex) {
+                       idle_exception(in_owner, ex);
+                       return;
+               }
+
                bag = getContentPane();
                bag.setLayout(new GridBagLayout());
 
@@ -209,7 +245,7 @@ public class AltosIdleMonitorUI extends AltosUIFrame implements AltosFlightDispl
                pack();
                setVisible(true);
 
-               thread = new AltosIdleMonitor((AltosIdleMonitorListener) this, (AltosLink) new AltosSerial (device), (boolean) remote);
+               thread = new AltosIdleMonitor((AltosIdleMonitorListener) this, link, (boolean) remote);
 
                status_update = new AltosFlightStatusUpdate(flightStatus);