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  1. Batik
  2. BATIK-710

Re-parenting an element with a SET element causes NullPointerExceptions

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    Details

    • Type: Bug
    • Status: Resolved
    • Resolution: Fixed
    • Affects Version/s: 1.7
    • Fix Version/s: None
    • Component/s: GVT
    • Labels:
      None
    • Environment:
      Operating System: other
      Platform: Other

      Description

      In order to move an element to the "top", I use the following script, which
      removes an element from its parent, and inserts it as the last child of the root
      element (thereby ensuring it gets draw last).

      function raise(e) {
      if
      (document.documentElement.childNodes.item(document.documentElement.childNodes.length-1)
      != e)

      { e.parentNode.removeChild(e); document.documentElement.appendChild(e); }

      However, if the element in question has a SET sub-element, something in the
      event processing gets confused, and each subsequent event causes a
      NullPointerException like this:

      [java] at
      org.apache.batik.anim.timing.TimedElement.eventOccurred(Unknown Source)
      [java] at
      org.apache.batik.anim.timing.EventbaseTimingSpecifier.handleEvent(Unknown Source)
      [java] at
      org.apache.batik.dom.events.EventSupport.fireEventListeners(Unknown Source)
      [java] at
      org.apache.batik.dom.events.EventSupport.fireEventListeners(Unknown Source)
      [java] at
      org.apache.batik.dom.events.EventSupport.dispatchEvent(Unknown Source)
      [java] at org.apache.batik.dom.AbstractNode.dispatchEvent(Unknown Source)
      [java] at
      org.apache.batik.bridge.BridgeEventSupport$Listener.dispatchMouseEvent(Unknown
      Source)
      [java] at
      org.apache.batik.bridge.BridgeEventSupport$Listener.mouseEntered(Unknown Source)
      [java] at
      org.apache.batik.gvt.event.AbstractAWTEventDispatcher.processMouseEvent(Unknown
      Source)
      [java] at
      org.apache.batik.gvt.event.AbstractAWTEventDispatcher.dispatchMouseEvent(Unknown
      Source)
      [java] at
      org.apache.batik.gvt.event.AbstractAWTEventDispatcher.dispatchEvent(Unknown Source)
      [java] at
      org.apache.batik.gvt.event.AWTEventDispatcher.dispatchEvent(Unknown Source)
      [java] at
      org.apache.batik.gvt.event.AbstractAWTEventDispatcher.mouseMoved(Unknown Source)
      [java] at
      org.apache.batik.swing.svg.AbstractJSVGComponent$SVGListener$1MouseMovedRunnable.run(Unknown
      Source)
      [java] at org.apache.batik.util.RunnableQueue.run(Unknown Source)
      [java] at java.lang.Thread.run(Thread.java:595)


      The following SVG demonstrates the effect: click the rectangle to trigger the
      raise function, and then observe the exceptions:

      <?xml version="1.0" encoding="utf-8" standalone="no"?>
      <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
      "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">

      <svg version="1.1" xmlns="http://www.w3.org/2000/svg"
      xmlns:xlink="http://www.w3.org/1999/xlink"
      xmlns:sbthd="http://www.selvaag.no/2007/sbthd" viewBox="-0.50 -1.00 11.00 22.00"
      font-family="Verdana" font-size="50.0">

      <title>
      House Designer SVG Output
      </title>
      <defs>
      <script type="text/ecmascript">
      <![CDATA[function raise(e) {
      if
      (document.documentElement.childNodes.item(document.documentElement.childNodes.length-1)
      != e) { e.parentNode.removeChild(e); document.documentElement.appendChild(e); }

      }]]>
      </script>
      </defs>

      <rect x="0.0" y="0.0" width="10.0" height="20.0" fill="blue" opacity="0.9"
      stroke="black" stroke-width="1.0" onclick="raise(evt.target)">
      <set attributeName="stroke-width" to="5.0" begin="mouseover" end="mouseout" />
      </rect>
      </svg>

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            • Assignee:
              batik-dev@xmlgraphics.apache.org Batik Developer's Mailing list
              Reporter:
              frodef@stud.cs.uit.no Frode V. Fjeld
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              Dates

              • Created:
                Updated:
                Resolved: