refactor code table resource chooser

src/nl/uu/cs/ssmui/CodeTableModel.java

@@ -262,48 +262,42 @@ public class CodeTableModel extends AbstractTableModel
         return res ;
     }
     
-    public Object getValueAt( int row, int column )
-    {
-    	Object res ;
+    public Object getValueAt( int row, int column ) {
+            Object res = "";
             Row r = rows.elementAt( row ) ;
-    	if ( column == C_PC )
-    	{
+            switch (column) {
+                    case C_PC:
                             res = (r.memLoc == registers.getPC()) ? Images.redball : Images.white ;
-    	}
-    	else if ( column == C_BP )
-    	{
+                            break;
+                    case C_BP:
                             res = r.hasBreakPoint ? Images.check : Images.white ;
-    	}
-    	else
-    	{
-    	    if ( column == C_VALUE )
-    	    {
-    	        res = memory.getAsHexAt( r.memLoc ) ;
-    	    }
-    	    else if ( column == C_LABEL && r.labelName != null )
-    	    {
-    	        res = r.labelName ;
-    	    }
-    	    else if ( column == C_ADDRESS )
-    	    {
-    	        res = Utils.asHex( r.memLoc ) ;
-    	    }
-    	    else if ( column == C_INSTR )
-    	    {
+                            break;
+                    case C_VALUE:        
+                            res = memory.getAsHexAt(r.memLoc);
+                            break;
+                    case C_LABEL:
+                            res = r.labelName;
+                            break;
+                    case C_ADDRESS:
+                            res = Utils.asHex(r.memLoc);
+                            break;
+                    case C_INSTR:
                             res = r.getInstrRepr( r.memLoc ) ;
+                            break;
+                    case C_ARG1:
+                            if (r.getNrInlineOpnds() > 0) {
+                                    res = memory.getAsHexAt(r.memLoc + 1) ;
                             } 
-    	    else if ( column == C_ARG1 && r.getNrInlineOpnds() > 0 )
-    	    {
-    	        res = memory.getAsHexAt( r.memLoc+1 ) ;
+                            break;
+                    case C_ARG2:
+                            if (r.getNrInlineOpnds() > 1) {
+                                    res = memory.getAsHexAt(r.memLoc + 2) ;
                             }
-    	    else if ( column == C_ARG2 && r.getNrInlineOpnds() > 1 )
-    	    {
-    	        res = memory.getAsHexAt( r.memLoc+2 ) ;
+                            break;
+                    default:
+                            res = "Error";
             }
-    	    else
-    	        res = "" ;
-    	}
-        return res ;
+            return res;
     }