/**
* fetches a resources with the help of a Connector. For HTML the response will be a string
* containing markup that needs to be parsed. <br>
* <br>
* If a fragment is given on the URI only the resulting part of the response is returned.
*
* @param absoluteURI
* @return a Node
* @throws XFormsException
*/
private Node getEmbeddedDocument(String absoluteURI) throws XFormsException {
// load resource from absoluteURI
ConnectorFactory factory = ConnectorFactory.getFactory();
factory.setContext(this.container.getProcessor().getContext());
URIResolver uriResolver = factory.createURIResolver(absoluteURI, this.element);
Object answer = uriResolver.resolve();
Node embed = null;
if (answer instanceof Node) {
embed = (Node) answer;
} else if (answer instanceof String) {
// we got some plain HTML and this is returned as a string
try {
embed = DOMUtil.parseString((String) answer, true, false);
} catch (ParserConfigurationException e) {
throw new XFormsException(e);
} catch (IOException e) {
throw new XFormsException(e);
} catch (SAXException e) {
throw new XFormsException(e);
}
}
// embed = extractFragment(absoluteURI, embed);
return embed;
}
private String getInlineJavaScript(Node embed) throws XFormsException {
// fetch style element(s) from Node to embed
String javaScriptCode = "";
if (embed instanceof Document) {
embed = ((Document) embed).getDocumentElement();
}
// Get all inline script ignoring script that folllows a xforms:node
List result =
XPathUtil.evaluate(
(Element) embed,
"//*[not( namespace-uri()='http://www.w3.org/2002/xforms' )]/*[(@type='text/javascript') and (not(boolean(@src)))]");
if (result.size() == 0) {
return null;
}
for (int i = 0; i < result.size(); i++) {
Object item = result.get(i);
if (result.get(i) instanceof NodeWrapper) {
NodeWrapper wrapper = (NodeWrapper) item;
if (!"action".equals(((NodeWrapper) item).getParent().getLocalPart())) {
Node n = (Node) wrapper.getUnderlyingNode();
javaScriptCode += DOMUtil.getTextNodeAsString(n);
}
}
}
return javaScriptCode;
}
private Node extractFragment(String absoluteURI, Node embed) throws XFormsException {
if (embed instanceof Document && absoluteURI.indexOf("#") != -1) {
String s = absoluteURI.substring(absoluteURI.indexOf("#") + 1);
embed = DOMUtil.getById((Document) embed, s);
}
if (embed == null) {
throw new XFormsException("content returned from URI could not be recognized");
}
if (embed instanceof Document) {
embed = ((Document) embed).getDocumentElement();
}
return embed;
}
/**
* Serializes and submits the given instance data over the <code>mailto</code> protocol.
*
* @param submission the submission issuing the request.
* @param instance the instance data to be serialized and submitted.
* @return <code>null</code>.
* @throws XFormsException if any error occurred during submission.
*/
public Map submit(Submission submission, Node instance) throws XFormsException {
if (!submission.getReplace().equals("none")) {
throw new XFormsException(
"submission mode '"
+ submission.getReplace()
+ "' at: "
+ DOMUtil.getCanonicalPath(submission.getElement())
+ " not supported");
}
try {
String mediatype = "application/xml";
if (submission.getMediatype() != null) {
mediatype = submission.getMediatype();
}
String encoding = getDefaultEncoding();
if (submission.getEncoding() != null) {
encoding = submission.getEncoding();
}
SerializerRequestWrapper wrapper = new SerializerRequestWrapper(new ByteArrayOutputStream());
serialize(submission, instance, wrapper);
ByteArrayOutputStream stream = (ByteArrayOutputStream) wrapper.getBodyStream();
/*
* Some extension mechanism here could be handy
*/
String method = submission.getMethod();
if (method.equals("post")) {
send(getURI(), stream.toByteArray(), encoding, mediatype);
} else if (method.equals("multipart-post")) {
send(getURI(), stream.toByteArray(), encoding, "multipart/related");
} else if (method.equals("form-data-post")) {
send(getURI(), stream.toByteArray(), encoding, "multipart/form-data");
} else if (method.equals("urlencoded-post")) {
send(getURI(), stream.toByteArray(), encoding, "application/x-www-form-urlencoded");
} else {
// Note: user has to provide mediatype in submission element otherwise this will
// be probably wrong type (application/xml) ...
send(getURI(), stream.toByteArray(), encoding, mediatype);
}
} catch (Exception e) {
throw new XFormsException(e);
}
return null;
}
private String getInlineCSS(Node embed) throws XFormsException {
// fetch style element(s) from Node to embed
String cssRules = "";
if (embed instanceof Document) {
embed = ((Document) embed).getDocumentElement();
}
List result =
XPathUtil.evaluate((Element) embed, "//*[@type='text/css' and (not(boolean(@href)))]");
if (result.size() == 0) {
return null;
}
for (int i = 0; i < result.size(); i++) {
Object item = result.get(i);
if (result.get(i) instanceof NodeWrapper) {
NodeWrapper wrapper = (NodeWrapper) item;
Node n = (Node) wrapper.getUnderlyingNode();
cssRules += DOMUtil.getTextNodeAsString(n);
}
}
return cssRules;
}
/**
* Performs the <code>load</code> action.
*
* @throws XFormsException if an error occurred during <code>load</code> processing.
*/
public void perform() throws XFormsException {
String bindAttribute = getXFormsAttribute(BIND_ATTRIBUTE);
String refAttribute = getXFormsAttribute(REF_ATTRIBUTE);
boolean includeCSS = true;
boolean includeScript = true;
Element extension =
DOMUtil.findFirstChildNS(this.element, NamespaceConstants.XFORMS_NS, EXTENSION);
if (extension != null) {
includeCSS =
("true".equalsIgnoreCase(getXFormsAttribute(extension, "includeCSS"))) ? true : false;
includeScript =
("true".equalsIgnoreCase(getXFormsAttribute(extension, "includeScript"))) ? true : false;
}
if (this.resource.isAvailable() && (bindAttribute != null || refAttribute != null)) {
// issue warning
getLogger()
.warn(
this
+ " perform: since both binding and linking attributes are present this action has no effect");
return;
}
// obtain relative URI
String relativeURI;
String absoluteURI = null;
try {
// todo: needs refactoring
updateXPathContext();
if ("none".equals(this.showAttribute)) {
// todo: dirty dirty dirty
String evaluatedTarget = evalAttributeValueTemplates(this.targetAttribute, this.element);
// Element targetElem = this.container.getElementById(evaluatedTarget);
Element targetElem = getTargetElement(evaluatedTarget);
destroyembeddedModels(targetElem);
DOMUtil.removeAllChildren(targetElem);
HashMap map = new HashMap();
map.put("show", this.showAttribute);
if (isRepeated()) {
map.put("nameTarget", evaluatedTarget);
String idForNamedElement = getXFormsAttribute(getTargetElement(evaluatedTarget), "id");
map.put("xlinkTarget", idForNamedElement);
} else {
map.put("xlinkTarget", evaluatedTarget);
}
this.container.dispatch(this.target, BetterFormEventNames.LOAD_URI, map);
return;
}
if (this.resource.isAvailable()) {
relativeURI = this.resource.getValue();
} else {
if (this.nodeset == null || this.nodeset.size() == 0) {
getLogger().warn(this + " perform: nodeset '" + getLocationPath() + "' is empty");
return;
}
final Instance instance = this.model.getInstance(getInstanceId());
relativeURI = instance.getNodeValue(XPathUtil.getAsNode(this.nodeset, 1));
}
// resolve uri
absoluteURI =
this.container.getConnectorFactory().getAbsoluteURI(relativeURI, this.element).toString();
HashMap map = new HashMap();
handleEmbedding(absoluteURI, map, includeCSS, includeScript);
} catch (XFormsException e) {
LOGGER.error(
"Error performing xf:load action at: " + DOMUtil.getCanonicalPath(this.getElement()));
throw new XFormsException(
"Error performing xf:load action at: " + DOMUtil.getCanonicalPath(this.getElement()), e);
}
// backwards compat
// storeInContext(absoluteURI, this.showAttribute);
}
private void handleEmbedding(
String absoluteURI, HashMap map, boolean includeCSS, boolean includeScript)
throws XFormsException {
// if(this.targetAttribute == null) return;
// todo: handle multiple params
if (absoluteURI.indexOf("?") > 0) {
String name = absoluteURI.substring(absoluteURI.indexOf("?") + 1);
String value = name.substring(name.indexOf("=") + 1, name.length());
name = name.substring(0, name.indexOf("="));
this.container.getProcessor().setContextParam(name, value);
}
if (this.targetAttribute == null) {
map.put("uri", absoluteURI);
map.put("show", this.showAttribute);
// dispatch internal betterform event
this.container.dispatch(this.target, BetterFormEventNames.LOAD_URI, map);
return;
}
if (!("embed".equals(this.showAttribute))) {
throw new XFormsException(
"@show must be 'embed' if @target is given but was: '"
+ this.showAttribute
+ "' on Element "
+ DOMUtil.getCanonicalPath(this.element));
}
// todo: dirty dirty dirty
String evaluatedTarget = evalAttributeValueTemplates(this.targetAttribute, this.element);
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("targetid evaluated to: " + evaluatedTarget);
}
Node embed = getEmbeddedDocument(absoluteURI);
// Check for 'ClientSide' events (DOMFocusIN / DOMFocusOUT / xforms-select)
String utilizedEvents = this.getEventsInSubform(embed);
// fetch CSS / JavaScript
String inlineCssRules = "";
String externalCssRules = "";
String inlineJavaScript = "";
String externalJavaScript = "";
if (includeCSS) {
inlineCssRules = getInlineCSS(embed);
externalCssRules = getExternalCSS(embed);
}
if (includeScript) {
inlineJavaScript = getInlineJavaScript(embed);
externalJavaScript = getExternalJavaScript(embed);
}
embed = extractFragment(absoluteURI, embed);
if (LOGGER.isDebugEnabled()) {
DOMUtil.prettyPrintDOM(embed);
}
if (embed == null) {
// todo: review: context info params containing a '-' fail during access in javascript!
// todo: the following property should have been 'resource-uri' according to spec
map.put("resourceUri", absoluteURI);
this.container.dispatch(this.target, XFormsEventNames.LINK_EXCEPTION, map);
return;
}
Element embeddedNode;
Element targetElem = getTargetElement(evaluatedTarget);
// Test if targetElem exist.
if (targetElem != null) {
// destroy existing embedded form within targetNode
if (targetElem.hasChildNodes()) {
destroyembeddedModels(targetElem);
Initializer.disposeUIElements(targetElem);
}
// import referenced embedded form into host document
embeddedNode = (Element) this.container.getDocument().importNode(embed, true);
// import namespaces
NamespaceResolver.applyNamespaces(
targetElem.getOwnerDocument().getDocumentElement(), (Element) embeddedNode);
// keep original targetElem id within hostdoc
embeddedNode.setAttributeNS(null, "id", targetElem.getAttributeNS(null, "id"));
// copy all Attributes that might have been on original mountPoint to embedded node
DOMUtil.copyAttributes(targetElem, embeddedNode, null);
targetElem.getParentNode().replaceChild(embeddedNode, targetElem);
map.put("uri", absoluteURI);
map.put("show", this.showAttribute);
map.put("targetElement", embeddedNode);
map.put("nameTarget", evaluatedTarget);
map.put("xlinkTarget", getXFormsAttribute(targetElem, "id"));
map.put("inlineCSS", inlineCssRules);
map.put("externalCSS", externalCssRules);
map.put("inlineJavascript", inlineJavaScript);
map.put("externalJavascript", externalJavaScript);
map.put("utilizedEvents", utilizedEvents);
this.container.dispatch((EventTarget) embeddedNode, BetterFormEventNames.EMBED, map);
// create model for it
this.container.createEmbeddedForm((Element) embeddedNode);
// dispatch internal betterform event
this.container.dispatch((EventTarget) embeddedNode, BetterFormEventNames.EMBED_DONE, map);
this.container.dispatch(this.target, BetterFormEventNames.LOAD_URI, map);
// storeInContext(absoluteURI, this.showAttribute);
} else {
String message =
"Element reference for targetid: "
+ this.targetAttribute
+ " not found. "
+ DOMUtil.getCanonicalPath(this.element);
/*
Element div = this.element.getOwnerDocument().createElementNS("", "div");
div.setAttribute("class", "bfException");
div.setTextContent("Element reference for targetid: " + this.targetAttribute + "not found. " + DOMUtil.getCanonicalPath(this.element));
Element body = (Element) this.container.getDocument().getElementsByTagName("body").item(0);
body.insertBefore(div, DOMUtil.getFirstChildElement(body));
*/
map.put("message", message);
map.put("exceptionPath", DOMUtil.getCanonicalPath(this.element));
this.container.dispatch(this.target, BetterFormEventNames.EXCEPTION, map);
// throw new XFormsException(message);
}
}