/*******************************************************************************
* Copyright (c) 2006 Sybase, Inc. and others.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Sybase, Inc. - initial API and implementation
*******************************************************************************/
package org.eclipse.jst.pagedesigner.utils;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.eclipse.jst.jsf.core.internal.tld.CMUtil;
import org.eclipse.jst.jsf.core.internal.tld.IJSFConstants;
import org.eclipse.jst.jsf.core.internal.tld.ITLDConstants;
import org.eclipse.jst.pagedesigner.IHTMLConstants;
import org.eclipse.jst.pagedesigner.css2.property.ICSSPropertyID;
import org.eclipse.wst.xml.core.internal.provisional.document.IDOMElement;
import org.eclipse.wst.xml.core.internal.provisional.document.IDOMModel;
import org.eclipse.wst.xml.core.internal.provisional.document.IDOMNode;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
/**
* @author mengbo
*/
public class SelectManyHelper {
private final static Set<String> JSF_SELECT_TAGS, HTML_SELECT_TAGS;
static {
Set<String> tempSet = new HashSet<String>(4);
tempSet.add(IHTMLConstants.TAG_SELECT);
tempSet.add(IHTMLConstants.TAG_OPTGROUP);
HTML_SELECT_TAGS = Collections.unmodifiableSet(tempSet);
tempSet = new HashSet(8);
tempSet.add(IJSFConstants.TAG_SELECTONELISTBOX);
tempSet.add(IJSFConstants.TAG_SELECTONEMENU);
tempSet.add(IJSFConstants.TAG_SELECTMANYLISTBOX);//
tempSet.add(IJSFConstants.TAG_SELECTMANYMENU);//
tempSet.add(IJSFConstants.TAG_SELECTMANYCHECKBOX);
JSF_SELECT_TAGS = Collections.unmodifiableSet(tempSet);
}
/**
* @param node
* @return the select option children of node
*/
public static Object[] getSelectOptions(Element node) {
if (node == null) {
return null;
}
IDOMModel xmlModel = null;
if (node instanceof IDOMNode) {
xmlModel = ((IDOMNode) node).getModel();
}
if (xmlModel == null) {
return null;
}
// TODO: this query is not cached.
String prefixNode = JSPUtil.getPrefix(xmlModel,
ITLDConstants.URI_JSF_HTML);
if (prefixNode != null && node.getPrefix() != null
&& node.getPrefix().equals(prefixNode)) {
if (JSF_SELECT_TAGS.contains(node.getLocalName())) {
String prefixItem = JSPUtil.getPrefix(xmlModel,
ITLDConstants.URI_JSF_CORE);
List result = new ArrayList();
NodeList items = node.getElementsByTagName(prefixItem
+ ":" + IJSFConstants.TAG_SELECTITEM); //$NON-NLS-1$
for (int i = 0, n = items.getLength(); i < n; i++) {
result.add(items.item(i));
}
items = node.getElementsByTagName(prefixItem
+ ":" + IJSFConstants.TAG_SELECTITEMS); //$NON-NLS-1$
for (int i = 0, n = items.getLength(); i < n; i++) {
result.add(items.item(i));
}
return result.size() > 0 ? result.toArray(new Node[result
.size()]) : null;
}
}
if (node.getPrefix() == null) {
if (HTML_SELECT_TAGS.contains(node.getNodeName().toLowerCase())) {
List result = new ArrayList();
NodeList options = node
.getElementsByTagName(IHTMLConstants.TAG_OPTION);
NodeList optionGroups = node
.getElementsByTagName(IHTMLConstants.TAG_OPTGROUP);
for (int i = 0, n = options.getLength(); i < n; i++) {
result.add(options.item(i));
}
for (int i = 0, n = optionGroups.getLength(); i < n; i++) {
result.add(optionGroups.item(i));
}
return result.toArray(new Node[result.size()]);
}
}
return null;
}
/**
* @param node
* @return the selection option children of node as strings
*/
public static String[] getSelectOptionsString(Element node) {
if (node == null) {
return null;
}
Object[] options = getSelectOptions(node);
if (null == options || options[0] == null) {
return null;
}
List result = new ArrayList();
for (int i = 0, n = options.length; i < n; i++) {
if (options[i] instanceof Element) {
Element element = (Element) options[i];
Node value = null;
if (element.getNodeName()
.indexOf(IJSFConstants.TAG_SELECTITEMS) >= 0) {
value = element.getAttributeNode(IJSFConstants.ATTR_VALUE);
} else if (element.getNodeName().indexOf(
IJSFConstants.TAG_SELECTITEM) >= 0) {
value = element
.getAttributeNode(ICSSPropertyID.ATTR_ITEMLABEL);
}
if (value != null) {
result.add(value.getNodeValue());
}
}
}
return (String[]) result.toArray(new String[] {});
}
/**
* @param node
* @return true if node has select option children
*/
public static boolean hasSelectOptions(Element node) {
if (node == null) {
return false;
}
String uri = CMUtil.getElementNamespaceURI(node);
if (ITLDConstants.URI_JSF_HTML.equals(uri)) {
if (JSF_SELECT_TAGS.contains(node.getLocalName())) {
IDOMModel model = ((IDOMElement) node).getModel();
String jsfcorePrefix = JSPUtil.getPrefix(model,
ITLDConstants.URI_JSF_CORE);
if (jsfcorePrefix != null) {
NodeList nl = node.getElementsByTagName(jsfcorePrefix + ":" //$NON-NLS-1$
+ IJSFConstants.TAG_SELECTITEM);
NodeList nl1 = node.getElementsByTagName(jsfcorePrefix
+ ":" + IJSFConstants.TAG_SELECTITEMS); //$NON-NLS-1$
return nl.getLength() > 0 || nl1.getLength() > 0;
}
return false;
}
}
if (ITLDConstants.URI_HTML.equals(uri)) {
if (HTML_SELECT_TAGS.contains(node.getNodeName().toLowerCase())) {
NodeList nl = node
.getElementsByTagName(IHTMLConstants.TAG_OPTION);
NodeList nl1 = node
.getElementsByTagName(IHTMLConstants.TAG_OPTGROUP);
return nl.getLength() > 0 || nl1.getLength() > 0;
}
}
return false;
}
/**
* @param node
* @return true if node is a core or HTML select tag
*/
public static boolean supportSections(Element node) {
String uri = CMUtil.getElementNamespaceURI(node);
if (ITLDConstants.URI_JSF_HTML.equals(uri)) {
return JSF_SELECT_TAGS.contains(node.getLocalName());
}
if (ITLDConstants.URI_HTML.equals(uri)) {
return HTML_SELECT_TAGS.contains(node.getNodeName().toLowerCase());
}
return false;
}
}