com.sun.jsftemplating.layout.facelets.FaceletsLayoutDefinitionReader Maven / Gradle / Ivy
/*
* The contents of this file are subject to the terms
* of the Common Development and Distribution License
* (the License). You may not use this file except in
* compliance with the License.
*
* You can obtain a copy of the license at
* https://jsftemplating.dev.java.net/cddl1.html or
* jsftemplating/cddl1.txt.
* See the License for the specific language governing
* permissions and limitations under the License.
*
* When distributing Covered Code, include this CDDL
* Header Notice in each file and include the License file
* at jsftemplating/cddl1.txt.
* If applicable, add the following below the CDDL Header,
* with the fields enclosed by brackets [] replaced by
* you own identifying information:
* "Portions Copyrighted [year] [name of copyright owner]"
*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
*/
package com.sun.jsftemplating.layout.facelets;
import java.io.BufferedInputStream;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import javax.xml.parsers.DocumentBuilder;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentType;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import com.sun.jsftemplating.layout.LayoutDefinitionException;
import com.sun.jsftemplating.layout.LayoutDefinitionManager;
import com.sun.jsftemplating.layout.SyntaxException;
import com.sun.jsftemplating.layout.descriptors.ComponentType;
import com.sun.jsftemplating.layout.descriptors.LayoutComponent;
import com.sun.jsftemplating.layout.descriptors.LayoutComposition;
import com.sun.jsftemplating.layout.descriptors.LayoutDefine;
import com.sun.jsftemplating.layout.descriptors.LayoutDefinition;
import com.sun.jsftemplating.layout.descriptors.LayoutElement;
import com.sun.jsftemplating.layout.descriptors.LayoutFacet;
import com.sun.jsftemplating.layout.descriptors.LayoutForEach;
import com.sun.jsftemplating.layout.descriptors.LayoutIf;
import com.sun.jsftemplating.layout.descriptors.LayoutInsert;
import com.sun.jsftemplating.layout.descriptors.LayoutStaticText;
import com.sun.jsftemplating.layout.template.BaseProcessingContext;
import com.sun.jsftemplating.layout.template.EventParserCommand;
import com.sun.jsftemplating.layout.template.ProcessingContextEnvironment;
import com.sun.jsftemplating.layout.template.TemplateParser;
import com.sun.jsftemplating.layout.template.TemplateReader;
import com.sun.jsftemplating.util.IncludeInputStream;
import com.sun.jsftemplating.util.LayoutElementUtil;
import com.sun.jsftemplating.util.Util;
import javax.faces.FactoryFinder;
import javax.faces.application.Application;
import javax.faces.application.ApplicationFactory;
/**
* @author Jason Lee
*
*/
public class FaceletsLayoutDefinitionReader {
private URL url;
private String key;
private Document document;
private int _idNumber;
public FaceletsLayoutDefinitionReader(String key, URL url) {
_idNumber = LayoutElementUtil.getStartingIdNumber(null, key);
InputStream is = null;
BufferedInputStream bs = null;
try{
this.key = key;
this.url = url;
DocumentBuilder builder = DbFactory.getInstance();
builder.setErrorHandler(new ParsingErrorHandler());
is = this.url.openStream();
bs = new BufferedInputStream(is);
document = builder.parse(new IncludeInputStream(bs));
} catch (Exception e) {
throw new LayoutDefinitionException(e);
} finally {
Util.closeStream(bs);
Util.closeStream(is);
}
}
public LayoutDefinition read() throws IOException {
LayoutDefinition layoutDefinition = new LayoutDefinition(key);
NodeList nodeList = document.getChildNodes();
boolean abortProcessing = false;
DocumentType docType = document.getDoctype();
if (docType != null) {
LayoutStaticText stDocType = new LayoutStaticText(layoutDefinition, "",
"");
layoutDefinition.addChildLayoutElement(stDocType);
}
for (int i = 0; i < nodeList.getLength() && (abortProcessing != true); i++) {
abortProcessing = process(layoutDefinition, nodeList.item(i), false);
}
return layoutDefinition;
}
public boolean process(LayoutElement parent, Node node, boolean nested) throws IOException {
boolean abortProcessing = false;
LayoutElement element = null;
LayoutElement newParent = parent;
boolean endElement = false;
String value = node.getNodeValue();
// TODO: find out what "name" should be in the ctors
switch (node.getNodeType()) {
case Node.TEXT_NODE :
if (!value.trim().equals("")) {
element = new LayoutStaticText(parent,
LayoutElementUtil.getGeneratedId(node.getNodeName(), getNextIdNumber()),
value);
}
break;
case Node.ELEMENT_NODE:
element = createComponent(parent, node, nested);
if (element instanceof LayoutStaticText) {
// We have a element node that needs to be static text
endElement = true;
} else if (element instanceof LayoutForEach) {
newParent = element;
} else if (element instanceof LayoutIf) {
newParent = element;
} else if (element instanceof LayoutComponent) {
nested = true;
newParent = element;
} else if (element instanceof LayoutComposition) {
abortProcessing = ((LayoutComposition)element).isTrimming();
newParent = element;
} else if (element instanceof LayoutDefine) {
newParent = element;
} else if (element instanceof LayoutFacet) {
newParent = element;
} else if (element instanceof LayoutInsert) {
newParent = element;
}
// FIXME: Jason, this code may need to be refactored. I think almost
// FIXME: everything should have newParent = element. The problem comes when
// FIXME: you are turning and into 2 separate staticText
// FIXME: components. This should be a single component, then it could contain
// FIXME: children also. You may want a to create a component like Woodstock's
// FIXME: "markup" component to do this.
break;
default:
// just because... :P
}
if (element != null) {
parent.addChildLayoutElement(element);
NodeList nodeList = node.getChildNodes();
boolean abortChildProcessing = false;
for (int i = 0; i < nodeList.getLength() && (abortChildProcessing != true); i++) {
abortChildProcessing = process(newParent, nodeList.item(i), nested);
}
if (abortChildProcessing == true) {
abortProcessing = abortChildProcessing;
}else {
if (endElement) {
String nodeName = node.getNodeName();
element = new LayoutStaticText(parent, LayoutElementUtil.getGeneratedId(nodeName, getNextIdNumber()), "");
parent.addChildLayoutElement(element);
}
}
}
return abortProcessing;
}
private LayoutComposition processComposition(LayoutElement parent, String attrName, NamedNodeMap attrs, String id, boolean trimming) {
LayoutComposition lc = new LayoutComposition(parent, id);
lc.setTrimming(trimming);
if (trimming) {
parent = parent.getLayoutDefinition(); // parent to the LayoutDefinition
parent.getChildLayoutElements().clear(); // a ui:composition clears everything outside of it
}
Node fileNameNode = attrs.getNamedItem(attrName);
String fileName = (fileNameNode != null) ? fileNameNode.getNodeValue() : null;
lc.setTemplate(fileName);
return lc;
}
private LayoutComponent processComponent(LayoutElement parent, Node node, NamedNodeMap attrs, String id, boolean trimming) {
if (trimming) {
parent = parent.getLayoutDefinition(); // parent to the LayoutDefinition
parent.getChildLayoutElements().clear(); // a ui:composition clears everything outside of it
}
LayoutComponent lc = new LayoutComponent(parent, id,
LayoutDefinitionManager.getGlobalComponentType(null, "event"));
parent.addChildLayoutElement(lc);
LayoutComposition comp = processComposition(lc, "template", attrs, id+"_lc", trimming);
NodeList nodeList = node.getChildNodes();
boolean abortChildProcessing = false;
for (int i = 0; i < nodeList.getLength() && (abortChildProcessing != true); i++) {
try {
abortChildProcessing = process(comp, nodeList.item(i), true);
} catch (IOException e) {
e.printStackTrace();
}
}
lc.addChildLayoutElement(comp);
return lc;
}
/*
This code is not used and does not appear to be correct, it should use FacesContext.getApplication()
private Application getApplication() {
ApplicationFactory appFactory = (ApplicationFactory) FactoryFinder
.getFactory(FactoryFinder.APPLICATION_FACTORY);
return appFactory.getApplication();
}
private Object getElValue(String el) {
FacesContext context = FacesContext.getCurrentInstance();
return getApplication()
.evaluateExpressionGet(context, el, Object.class);
}
*/
private LayoutElement createComponent(LayoutElement parent, Node node, boolean nested) {
LayoutElement element = null;
String nodeName = node.getNodeName();
NamedNodeMap attrs = node.getAttributes();
Node nameNode = attrs.getNamedItem("id");
String id = (nameNode != null) ? nameNode.getNodeValue() :
LayoutElementUtil.getGeneratedId(nodeName, getNextIdNumber());
if ("ui:composition".equals(nodeName)) {
element = processComposition(parent, "template", attrs, id, true);
} else if ("ui:decorate".equals(nodeName)) {
element = processComposition(parent, "template", attrs, id, false);
} else if ("ui:define".equals(nodeName)) {
String name = attrs.getNamedItem("name").getNodeValue();
element = new LayoutDefine(parent, name);
} else if ("ui:insert".equals(nodeName)) {
LayoutInsert li = new LayoutInsert(parent, id);
Node nameAttr = attrs.getNamedItem("name");
String name = (nameAttr != null) ? nameAttr.getNodeValue() : null;
li.setName(name);
element = li;
// Let these be handled by the else below, and let's see what happens :)
} else if ("ui:component".equals(nodeName)) {
element = processComponent(parent, node, attrs, id, true);
} else if ("ui:fragment".equals(nodeName)) {
element = processComponent(parent, node, attrs, id, false);
/*
Node bindingAttr = attrs.getNamedItem("binding");
if (bindingAttr == null) {
throw new LayoutDefinitionException("ui:fragment requires a binding attribute");
}
String bindingEl = bindingAttr.getNodeValue();
Object obj = getElValue(bindingEl);
if (!(obj instanceof UIComponent)) {
throw new LayoutDefinitionException("Binding EL must return a UIComponent");
}
UIComponent comp = (UIComponent) obj;
String family = comp.getFamily(); // TODO: is the correct?
System.out.println(LayoutDefinitionManager.getGlobalComponentTypes(null));
ComponentType componentType =
LayoutDefinitionManager.getGlobalComponentType(null, family);
LayoutComponent lc = new LayoutComponent(parent, id, componentType);
addAttributesToComponent(lc, node);
lc.setFacetChild(false);
lc.setNested(nested);
element = lc;
*/
} else if ("ui:debug".equals(nodeName)) {
} else if ("ui:include".equals(nodeName)) {
element = processComposition(parent, "src", attrs, id, false);
} else if ("ui:param".equals(nodeName)) {
// Handle "param"
Node nameAttNode = attrs.getNamedItem("name");
if (nameAttNode == null) {
throw new SyntaxException("The 'name' attribute is required on 'param'.");
}
Node valueNode = attrs.getNamedItem("value");
if (valueNode == null) {
throw new SyntaxException("The 'value' attribute is required on 'param'.");
}
// For now only handle cases where the parent is a LayoutComposition
if (!(parent instanceof LayoutComposition)) {
throw new SyntaxException("<" + nodeName
+ " name='" + nameAttNode.getNodeValue()
+ "' value='" + valueNode.getNodeValue()
+ "'> must be child of a 'composition' element!");
}
// Set the name=value on the parent LayoutComposition
((LayoutComposition) parent).setParameter(
nameAttNode.getNodeValue(), valueNode.getNodeValue());
} else if ("ui:remove".equals(nodeName)) {
// Let the element remain null
} else if ("ui:repeat".equals(nodeName)) {
} else if ("ui:event".equals(nodeName)) {
// per Ken, we need to append "/>" to allow the handler parser code
// to end correctly
String body = node.getTextContent();
body = (body == null) ? "/>" : (body.trim() + "/>");
Node type = node.getAttributes().getNamedItem("type");
if (type == null) {
// Ensure type != null
throw new SyntaxException(
"The 'type' attribute is required on 'ui:event'!");
}
String eventName = type.getNodeValue();
InputStream is = new ByteArrayInputStream(body.getBytes());
EventParserCommand command = new EventParserCommand();
try {
TemplateParser parser = new TemplateParser(is);
parser.open(); // Needed to initialize things.
// Setup the reader...
TemplateReader reader = new TemplateReader("foo", parser); // TODO: get a real ID
reader.pushTag("event"); // The tag will be popped at the end
// Read the handlers...
command.process(new BaseProcessingContext(),
new ProcessingContextEnvironment(reader, parent, true), eventName);
// Clean up
parser.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
if (is != null) {
try {
is.close();
} catch (Exception e) {
// ignore
}
}
}
} else if ("ui:if".equals(nodeName)) {
// Handle "if" conditions
String condition = attrs.getNamedItem("condition").getNodeValue();
element = new LayoutIf(parent, condition);
} else if ("ui:foreach".equals(nodeName)) {
// Handle "foreach" conditions
Node valueNode = attrs.getNamedItem("value");
if (valueNode == null) {
throw new SyntaxException("The 'value' property is required on 'foreach'.");
}
Node varNode = attrs.getNamedItem("var");
if (varNode == null) {
throw new SyntaxException("The 'var' property is required on 'foreach'.");
}
element = new LayoutForEach(parent, valueNode.getNodeValue(), varNode.getNodeValue());
} else if ("f:facet".equals(nodeName)) {
// FIXME: Need to take NameSpace into account
nameNode = attrs.getNamedItem("name");
if (nameNode == null) {
throw new IllegalArgumentException("You must provide a name "
+ "attribute for all facets! Parent component is: '"
+ parent.getUnevaluatedId() + "'.");
}
LayoutFacet facetElt = new LayoutFacet(parent, nameNode.getNodeValue());
// Determine if this is a facet place holder (i.e. we're defining
// a renderer w/ a facet), or if it is a facet value to set on a
// containing component.
boolean isRendered =
!LayoutElementUtil.isNestedLayoutComponent(facetElt);
facetElt.setRendered(isRendered);
element = facetElt;
} else {
LayoutComponent lc = null;
ComponentType componentType = null;
String nsURI = node.getNamespaceURI();
if (nsURI != null) {
// Do lookup using namespace...
componentType = LayoutDefinitionManager.getGlobalComponentType(
null, nsURI + ':' + node.getLocalName());
}
if (componentType == null) {
// Try w/o using namespace
componentType = LayoutDefinitionManager.
getGlobalComponentType(null, nodeName);
}
if (componentType == null) {
String value = node.getNodeValue();
if (value == null) {
value = "";
}
// FIXME: This needs to account for beginning and ending tags....
lc = new LayoutStaticText(parent, id,
"<" + nodeName + buildAttributeList(node) + ">");
} else {
lc = new LayoutComponent(parent, id, componentType);
addAttributesToComponent(lc, node);
}
lc.setNested(nested);
// FIXME: Because of the way pages are composed in facelets, the parent
// FIXME: LayoutComponent may not exist in this LD. In that case it is not
// FIXME: a "facet child", but it appears to be according to the following
// FIXME: method. We need a better way to mark children as facets or real
// FIXME: children. This may even require diverging the LD into 1 for
// FIXME: components and 1 for pages. :(
//LayoutElementUtil.checkForFacetChild(parent, lc);
//lc.setFacetChild(false); This is done by checkForFacetChild(...)
element = lc;
}
return element;
}
private void addAttributesToComponent (LayoutComponent lc, Node node) {
NamedNodeMap map = node.getAttributes();
for (int i = 0; i < map.getLength(); i++) {
Node attr = map.item(i);
lc.addOption(attr.getNodeName(), attr.getNodeValue());
}
}
private String buildAttributeList(Node node) {
StringBuilder attrs = new StringBuilder();
NamedNodeMap map = node.getAttributes();
for (int i = 0; i < map.getLength(); i++) {
Node attr = map.item(i);
attrs.append(" ")
.append(attr.getNodeName())
.append("=\"")
.append(attr.getNodeValue())
.append("\"");
}
return attrs.toString();
}
/**
* This method returns the next ID number. Calling this method will
* increment the id number.
*/
public int getNextIdNumber() {
// Make sure we increment the global counter, if appropriate
LayoutElementUtil.incHighestId(_idNumber);
return _idNumber++;
}
}
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