altosui: Display error dialog when AltOS JNI library can't be loaded

[fw/altos] / ao-tools / altosui / AltosUI.java

diff --git a/ao-tools/altosui/AltosUI.java b/ao-tools/altosui/AltosUI.java
index 3aaeb888380c5400caed334476238da980e166a6..ca587b257ee81236fd564fa3c3fd796e0b153582 100644 (file)
--- a/ao-tools/altosui/AltosUI.java
+++ b/ao-tools/altosui/AltosUI.java
@@ -70,8 +70,22 @@ public class AltosUI extends JFrame {
 
        public AltosVoice voice = new AltosVoice();
 
+       public static boolean load_library(Frame frame) {
+               if (!AltosDevice.load_library()) {
+                       JOptionPane.showMessageDialog(frame,
+                                                     String.format("No AltOS library in \"%s\"",
+                                                                   System.getProperty("java.library.path","<undefined>")),
+                                                     "Cannot load device access library",
+                                                     JOptionPane.ERROR_MESSAGE);
+                       return false;
+               }
+               return true;
+       }
+
        public AltosUI() {
 
+               load_library(null);
+
                String[] statusNames = { "Height (m)", "State", "RSSI (dBm)", "Speed (m/s)" };
                Object[][] statusData = { { "0", "pad", "-50", "0" } };