Only discover DAS sources if panel shown

diff --git a/src/jalview/gui/DasSourceBrowser.java b/src/jalview/gui/DasSourceBrowser.java
index 36e5164..e78d2d4 100755 (executable)
--- a/src/jalview/gui/DasSourceBrowser.java
+++ b/src/jalview/gui/DasSourceBrowser.java
@@ -43,6 +43,8 @@ public class DasSourceBrowser extends GDasSourceBrowser
 \r
   String DEFAULT_REGISTRY = "http://das.sanger.ac.uk/registry/das1/sources/";\r
 \r
+  boolean loadingDasSources = false;\r
+\r
 \r
   public DasSourceBrowser()\r
   {\r
@@ -83,15 +85,19 @@ public class DasSourceBrowser extends GDasSourceBrowser
           }\r
         });\r
 \r
-    if(dasSources==null)\r
+    if(dasSources!=null)\r
     {\r
-    Thread worker = new Thread(this);\r
-    worker.start();\r
-    }\r
-    else\r
-     {\r
        init();\r
-     }\r
+    }\r
+  }\r
+\r
+  public void paintComponent(java.awt.Graphics g)\r
+  {\r
+    if (dasSources == null && !loadingDasSources)\r
+    {\r
+      Thread worker = new Thread(this);\r
+      worker.start();\r
+    }\r
   }\r
 \r
   void init()\r
@@ -239,6 +245,8 @@ public class DasSourceBrowser extends GDasSourceBrowser
 \r
   public void run()\r
   {\r
+    loadingDasSources = true;\r
+\r
     addLocal.setVisible(false);\r
     refresh.setVisible(false);\r
     progressBar.setVisible(true);\r
@@ -250,6 +258,8 @@ public class DasSourceBrowser extends GDasSourceBrowser
 \r
     init();\r
 \r
+    loadingDasSources = false;\r
+\r
   }\r
 \r
   public Vector getSelectedSources()\r