improved the formatting

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@6721 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/java/hudson/Util.java

 package hudson;
 
 import hudson.model.TaskListener;
+import hudson.model.Hudson;
 import hudson.util.IOException2;
 import org.apache.tools.ant.BuildException;
 import org.apache.tools.ant.Project;
 import org.apache.tools.ant.types.FileSet;
 import org.apache.tools.ant.taskdefs.Chmod;
 import org.apache.tools.ant.taskdefs.Copy;
+import org.kohsuke.stapler.Stapler;
 
 import java.io.BufferedReader;
 import java.io.ByteArrayInputStream;
@@ -610,6 +612,17 @@ public class Util {
         return createFileSet(baseDir,includes,null);
     }
 
+    /**
+     * Wraps with the error icon and the CSS class to render error message.
+     * @since 1.173 
+     */
+    public static String wrapToErrorSpan(String s) {
+        s = "<span class=error><img src='"+
+            Stapler.getCurrentRequest().getContextPath()+ Hudson.RESOURCE_PATH+
+            "/images/none.gif' height=16 width=1>"+s+"</span>";
+        return s;
+    }
+
     public static final SimpleDateFormat XS_DATETIME_FORMATTER = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");
 
     // Note: RFC822 dates must not be localized!

core/src/main/java/hudson/node_monitors/DiskSpaceMonitor.java

 package hudson.node_monitors;
 
 import hudson.FilePath;
+import hudson.Util;
 import hudson.FilePath.FileCallable;
 import hudson.model.Computer;
 import hudson.model.Descriptor;
@@ -35,7 +36,7 @@ public class DiskSpaceMonitor extends NodeMonitor {
         space/=1024L;   // convert to MB
         if(space<1024) {
             // less than a GB
-            return "<span class=error>"+new BigDecimal(space).scaleByPowerOfTen(-3).toPlainString()+"GB<span>";
+            return Util.wrapToErrorSpan(new BigDecimal(space).scaleByPowerOfTen(-3).toPlainString());
         }
 
         return space/1024+"GB";

core/src/main/java/hudson/util/ClockDifference.java

@@ -2,9 +2,12 @@ package hudson.util;
 
 import hudson.Util;
 import hudson.model.Node;
+import hudson.model.Hudson;
 
 import java.io.IOException;
 
+import org.kohsuke.stapler.Stapler;
+
 /**
  * Represents a clock difference. Immutable.
  *
@@ -57,7 +60,8 @@ public final class ClockDifference {
     
     public String toHtml() {
         String s = toString();
-        if(isDangerous())   s = "<span class=error>"+s+"</span>";
+        if(isDangerous())
+            s = Util.wrapToErrorSpan(s);
         return s;
     }