Index: src/org/openide/text/DocumentLine.java
===================================================================
RCS file: /cvs/openide/src/org/openide/text/DocumentLine.java,v
retrieving revision 1.51
diff -u -r1.51 DocumentLine.java
--- src/org/openide/text/DocumentLine.java	30 Sep 2003 16:45:38 -0000	1.51
+++ src/org/openide/text/DocumentLine.java	8 Dec 2003 14:54:26 -0000
@@ -892,7 +892,7 @@
             int newLine = listener.getLine (line);
             int offset = NbDocument.findLineOffset (listener.doc, newLine);
 
-            return this.registerLine(createLine(offset));
+            return safelyRegisterLine(createLine(offset));
         }
 
         /* Creates current line.
@@ -903,7 +903,7 @@
         public Line getCurrent (int line) throws IndexOutOfBoundsException {
             int offset = NbDocument.findLineOffset (listener.doc, line);
 
-            return this.registerLine(createLine(offset));
+            return safelyRegisterLine(createLine(offset));
         }
 
         /** Creates a {@link Line} for a given offset.
@@ -912,6 +912,26 @@
         */
         protected abstract Line createLine (int offset);
 
+        /** Registers line, but only after obtaining the lock of the document.
+         * This is a fix to issue 37767 as this creates ordering of locks (first 
+         * of all obtain documentrenderer, then ask for any other locks like
+         * Line.Set.lines.
+         *
+         * @param line line we want to register
+         * @return the line or some line that already was registered
+         */
+        private Line safelyRegisterLine (final Line line) {
+            class DocumentRenderer implements Runnable {
+                public Line result;
+                
+                public void run () {
+                    result = DocumentLine.Set.super.registerLine (line);
+                }
+            }
+            DocumentRenderer renderer = new DocumentRenderer ();
+            listener.doc.render (renderer);
+            return renderer.result;
+        }
     }