src/org/tiefaces/components/websheet/utility/ChartUtility.java
private static String getAnchorAssociateChartId(
            final CTTwoCellAnchor ctanchor) {

        if (ctanchor.getGraphicFrame() == null) {
            return null;
        }

        Node parentNode = ctanchor.getGraphicFrame().getGraphic()
                .getGraphicData().getDomNode();

        NodeList childNodes = parentNode.getChildNodes();
        for (int i = 0; i < childNodes.getLength(); i++) {
            Node childNode = childNodes.item(i);
            if ((childNode != null)
                    && ("c:chart".equalsIgnoreCase(childNode.getNodeName()))
                    && (childNode.hasAttributes())) {
                String rId = getChartIdFromChildNodeAttributes(
                        childNode.getAttributes());
                if (rId != null) {
                    return rId;
                }
            }
        }
        return null;
    }
private static String getAnchorAssociateChartId(
            final CTTwoCellAnchor ctanchor) {

        if (ctanchor.getGraphicFrame() == null) {
            return null;
        }

        Node parentNode = ctanchor.getGraphicFrame().getGraphic()
                .getGraphicData().getDomNode();

        NodeList childNodes = parentNode.getChildNodes();
        for (int i = 0; i < childNodes.getLength(); i++) {
            Node childNode = childNodes.item(i);
            if ((childNode != null)
                    && ("c:chart".equalsIgnoreCase(childNode.getNodeName()))
                    && (childNode.hasAttributes())) {
                String rId = getChartIdFromChildNodeAttributes(
                        childNode.getAttributes());
                if (rId != null) {
                    return rId;
                }
            }
        }
        return null;
    }
Gets the anchor associate chart id.

@param ctanchor
the ctanchor
@return the anchor associate chart id