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/*******************************************************************************
* Copyright (c) 2005 Oracle Corporation.
* 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:
* Ian Trimble - initial API and implementation
*******************************************************************************/
package org.eclipse.jst.pagedesigner.jsf.ui.converter.operations.jsf;
import java.util.Iterator;
import java.util.List;
import java.util.StringTokenizer;
import org.eclipse.jst.pagedesigner.converter.ConvertPosition;
import org.eclipse.jst.pagedesigner.dtmanager.converter.ITransformOperation;
import org.eclipse.jst.pagedesigner.dtmanager.converter.operations.AbstractTransformOperation;
import org.eclipse.jst.pagedesigner.dtmanager.converter.operations.TransformOperationFactory;
import org.w3c.dom.Element;
/**
* ITransformOperation implementation specifically for the "dataTable" JSF
* (HTML) Element.
*
* <br><b>Note:</b> requires ITransformOperation.setTagConverterContext(...) to
* have been called to provide a valid ITagConverterContext instance prior to
* a call to the transform(...) method.
*
* @author Ian Trimble - Oracle
*/
public class DataTableOperation extends AbstractTransformOperation {
/*
* (non-Javadoc)
* @see org.eclipse.jst.pagedesigner.dtmanager.converter.operations.internal.provisional.AbstractTransformOperation#transform(org.w3c.dom.Element, org.w3c.dom.Element)
*/
public Element transform(Element srcElement, Element curElement) {
Element tableElement = null;
//create table element, copy all attributes, rename "styleClass" attribute to "class"
tableElement = createElement("table");
ITransformOperation operation =
TransformOperationFactory.getInstance().getTransformOperation(
TransformOperationFactory.OP_CopyAllAttributesOperation,
new String[]{});
operation.transform(srcElement, tableElement);
operation =
TransformOperationFactory.getInstance().getTransformOperation(
TransformOperationFactory.OP_RenameAttributeOperation,
new String[]{"styleClass", "class"});
operation.transform(srcElement, tableElement);
//build thead
buildHeaderOrFooter(srcElement, tableElement, true);
//build tbody
buildBody(srcElement, tableElement);
//build tfoot
buildHeaderOrFooter(srcElement, tableElement, false);
return tableElement;
}
private void buildHeaderOrFooter(Element srcElement, Element tableElement, boolean isHeader) {
//setup vars depending on whether we are building thead or tfoot
String facetName = isHeader ? "header" : "footer";
String headerOrFooterTagName = isHeader ? "thead" : "tfoot";
String thOrTdTagName = isHeader ? "th" : "td";
String headerClassOrFooterClassAttrName = isHeader ? "headerClass" : "footerClass";
//look for facet ("header" or "footer")
Element facetElement = getChildFacetByName(srcElement, facetName);
//get list of child "column" elements
List columnElementList = getChildElements(srcElement, "column");
//look for facet ("header" or "footer") on child "column" elements
boolean hasColumnFacet = false;
Iterator itColumnElementList = columnElementList.iterator();
while (itColumnElementList.hasNext()) {
Element columnElement = (Element)itColumnElementList.next();
Element columnFacet = getChildFacetByName(columnElement, facetName);
if (columnFacet != null) {
hasColumnFacet = true;
break;
}
}
//test if we even need to build header or footer
if (facetElement == null && !hasColumnFacet) {
return;
}
//append "thead" or "tfoot" Element
Element headerOrFooterElement = appendChildElement(headerOrFooterTagName, tableElement);
//if facetElement exists, build appropriate thead or tfoot children
if (facetElement != null) {
//append "tr" Element
Element trElement = appendChildElement("tr", headerOrFooterElement);
//append "th" or "td" Element
Element thOrTdElement = appendChildElement(thOrTdTagName, trElement);
//set "class" attribute
String headerClassOrFooterClassAttribute = srcElement.getAttribute(headerClassOrFooterClassAttrName);
if (headerClassOrFooterClassAttribute != null && headerClassOrFooterClassAttribute.length() > 0) {
ITransformOperation operation =
TransformOperationFactory.getInstance().getTransformOperation(
TransformOperationFactory.OP_CreateAttributeOperation,
new String[]{"class", headerClassOrFooterClassAttribute});
operation.transform(srcElement, thOrTdElement);
}
//set "colspan" attribute
if (columnElementList.size() > 0) {
ITransformOperation operation =
TransformOperationFactory.getInstance().getTransformOperation(
TransformOperationFactory.OP_CreateAttributeOperation,
new String[]{"colspan", String.valueOf(columnElementList.size())});
operation.transform(srcElement, thOrTdElement);
}
//add facet Element as child (to be processed further)
tagConverterContext.addChild(facetElement, new ConvertPosition(thOrTdElement, 0));
}
//if any child column has "header" or "footer" facet, build "tr" element
if (hasColumnFacet) {
//append "tr" Element
Element trElement = appendChildElement("tr", headerOrFooterElement);
//iterate through columnElementList
itColumnElementList = columnElementList.iterator();
while (itColumnElementList.hasNext()) {
Element columnElement = (Element)itColumnElementList.next();
//get "header" or "footer" facet of column
Element columnFacet = getChildFacetByName(columnElement, facetName);
//append "th" or "td" Element
Element thOrTdElement = appendChildElement(thOrTdTagName, trElement);
//set "class" attribute
String headerClassOrFooterClassAttribute = srcElement.getAttribute(headerClassOrFooterClassAttrName);
if (headerClassOrFooterClassAttribute != null && headerClassOrFooterClassAttribute.length() > 0) {
ITransformOperation operation =
TransformOperationFactory.getInstance().getTransformOperation(
TransformOperationFactory.OP_CreateAttributeOperation,
new String[]{"class", headerClassOrFooterClassAttribute});
operation.transform(srcElement, thOrTdElement);
}
//if facet exists, add facet Element as child (to be processed further)
if (columnFacet != null) {
tagConverterContext.addChild(columnFacet, new ConvertPosition(thOrTdElement, 0));
}
}
}
}
private void buildBody(Element srcElement, Element tableElement) {
//append "tbody" element
Element tbodyElement = appendChildElement("tbody", tableElement);
//append "tr" element
Element trElement = appendChildElement("tr", tbodyElement);
//parse "rowClasses" attribute and set "class" attribute
String rowClassesAttribute = srcElement.getAttribute("rowClasses");
if (rowClassesAttribute != null && rowClassesAttribute.length() > 0) {
StringTokenizer tokenizer = new StringTokenizer(rowClassesAttribute, ", ");
if (tokenizer.hasMoreTokens()) {
ITransformOperation operation =
TransformOperationFactory.getInstance().getTransformOperation(
TransformOperationFactory.OP_CreateAttributeOperation,
new String[]{"class", tokenizer.nextToken()});
operation.transform(srcElement, trElement);
}
}
//add child columns (to be processed further)
List columnElementList = getChildElements(srcElement, "column");
Iterator itColumnElementList = columnElementList.iterator();
int index = 0;
while (itColumnElementList.hasNext()) {
Element columnElement = (Element)itColumnElementList.next();
tagConverterContext.addChild(columnElement, new ConvertPosition(trElement, index++));
}
}
/**
* Gets a child Element of the specified parent Element that has the node
* name "facet" and the specified value of the "name" attribute.
*
* @param srcElement Parent Element instance.
* @param facetName Name of the facet Element for which to search.
* @return Child Element that is a facet with the specified name.
*/
private Element getChildFacetByName(Element srcElement, String facetName) {
Element element = null;
List facets = getChildElements(srcElement, "facet");
Iterator itFacets = facets.iterator();
while (itFacets.hasNext()) {
Element facet = (Element)itFacets.next();
if (facet.getAttribute("name").equals(facetName)) {
element = facet;
break;
}
}
return element;
}
}
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