protected void updatePreviewText(IStructuredSelection selection) {
if (previewText == null) return;
VariableTreeContentProvider contentProvider =
(VariableTreeContentProvider) super.getTreeViewer().getContentProvider();
Object[] path = contentProvider.getPathToRoot(selection.getFirstElement());
String preview = "$"; // $NON-NLS-1$
if (path != null) {
Variable var = null;
for (int i = path.length - 1; i >= 0; i--) {
String targetNamespace = null;
String namespacePrefix = null;
String segment = null;
Object modelObject = BPELUtil.resolveXSDObject(((ITreeNode) path[i]).getModelObject());
;
if (modelObject instanceof Variable) {
var = (Variable) modelObject;
segment = var.getName();
} else if (modelObject instanceof XSDAttributeDeclaration) {
XSDAttributeDeclaration att = (XSDAttributeDeclaration) modelObject;
targetNamespace = att.getTargetNamespace();
if (targetNamespace != null) {
namespacePrefix = BPELUtils.getNamespacePrefix(var, targetNamespace);
Assert.isNotNull(namespacePrefix, XPathExpressionUtil.MSG_NS_PREFIX_NULL);
segment = "/@" + namespacePrefix + ":" + att.getName(); // $NON-NLS-1$ //$NON-NLS-2$
} else {
segment = "/@" + att.getName(); // $NON-NLS-1$
}
} else if (modelObject instanceof XSDElementDeclaration) {
XSDElementDeclaration elm = (XSDElementDeclaration) modelObject;
targetNamespace = elm.getTargetNamespace();
XSDTypeDefinition typeDef = elm.getType();
XSDParticle particle = typeDef.getComplexType();
boolean isArray =
particle != null
&& (particle.getMaxOccurs() == XSDParticle.UNBOUNDED
|| particle.getMaxOccurs() > 1);
if (targetNamespace != null) {
namespacePrefix = BPELUtils.getNamespacePrefix(var, targetNamespace);
Assert.isNotNull(namespacePrefix, XPathExpressionUtil.MSG_NS_PREFIX_NULL);
segment = "/" + namespacePrefix + ":" + elm.getName(); // $NON-NLS-1$ //$NON-NLS-2$
} else {
segment = "/" + elm.getName(); // $NON-NLS-1$
}
if (isArray) {
segment += "[1]"; // $NON-NLS-1$
}
} else if (modelObject instanceof Part) {
Part part = (Part) modelObject;
segment = "." + part.getName(); // $NON-NLS-1$
}
if (segment != null) preview += segment;
}
// store away value
previewText.setText(preview);
thePreviewText = preview;
}
}
