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/**
* Copyright (c) 2008 Oracle Corporation 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:
* Oracle Corporation - initial API and implementation
*/
package org.eclipse.jst.jsf.apache.trinidad.tagsupport.converter.operations;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import org.eclipse.jst.jsf.apache.trinidad.tagsupport.ITrinidadConstants;
import org.eclipse.jst.jsf.common.dom.TagIdentifier;
import org.eclipse.jst.jsf.core.internal.tld.IJSFConstants;
import org.eclipse.jst.jsf.core.internal.tld.TagIdentifierFactory;
import org.eclipse.jst.pagedesigner.converter.ConvertPosition;
import org.eclipse.jst.pagedesigner.dtmanager.converter.ITransformOperation;
import org.eclipse.jst.pagedesigner.dtmanager.converter.operations.TransformOperationFactory;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.Text;
/**
* Abstract ITransformOperation implementation for tags which may be preceded by
* a label and may have a "help" facet.
*
* <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 abstract class AbstractLabelAndHelpOperation extends AbstractTrinidadTransformOperation {
private static final String STYLE_OUTERELEMENT = "font-family:Arial,Helvetica,Geneva,sans-serif;font-size:10pt;font-weight:normal;color:#000000;"; //$NON-NLS-1$
private static final String STYLE_LABELTD = "font-family:Arial,Helvetica,Geneva,sans-serif;font-size:10pt;text-align:right;color:#000000;padding:0px 8px 0px 0px;font-weight:normal;"; //$NON-NLS-1$
private static final String STYLE_REQUIREDSPAN = "color:#669966;font-family:Courier,sans-serif;"; //$NON-NLS-1$
protected static final String STYLE_CONTROLELEMENT = "font-family:Arial,Helvetica,Geneva,sans-serif;font-size:10pt;font-weight:normal;color:#000000;"; //$NON-NLS-1$
private static final String STYLE_HELPSPAN = "font-family:Arial,Helvetica,Geneva,sans-serif;font-size:8pt;font-weight:normal;color:#669966;"; //$NON-NLS-1$
/**
* Subclasses must implement this method to append the desired DOM structure
* that represents the HTML control(s) to parentElement.
*
* @param srcElement Source Element representing source document tag.
* @param parentElement Parent Element to which structure is appended.
*/
protected abstract void appendControl(Element srcElement, Element parentElement);
/* (non-Javadoc)
* @see org.eclipse.jst.pagedesigner.dtmanager.converter.operations.AbstractTransformOperation#transform(org.w3c.dom.Element, org.w3c.dom.Element)
*/
@Override
public Element transform(Element srcElement, Element curElement) {
Element outerElement;
//create outer Element
String simple = srcElement.getAttribute("simple"); //$NON-NLS-1$
if (Boolean.valueOf(simple)) {
outerElement = createElement("span"); //$NON-NLS-1$
} else {
outerElement = createElement("table"); //$NON-NLS-1$
//append table-specific attributes
appendAttribute(outerElement, "cellpadding", "0"); //$NON-NLS-1$
appendAttribute(outerElement, "cellspacing", "0"); //$NON-NLS-1$
appendAttribute(outerElement, "border", "0"); //$NON-NLS-1$
}
//append common attributes
ITransformOperation operation =
TransformOperationFactory.getInstance().getTransformOperation(
TransformOperationFactory.OP_CopyAttributeWithRenameOperation,
new String[]{"styleClass", "class"}); //$NON-NLS-1$ //$NON-NLS-2$
operation.transform(srcElement, outerElement);
appendAttribute(outerElement, "style", //$NON-NLS-1$
calculateStyle(STYLE_OUTERELEMENT, srcElement, "inlineStyle")); //$NON-NLS-1$
if (Boolean.valueOf(simple)) {
//continue building simple variant
appendControl(srcElement, outerElement);
} else {
//continue building non-simple variant
Element trElement = appendChildElement("tr", outerElement); //$NON-NLS-1$
if (isRequired(srcElement) || getLabel(srcElement) != null) {
//if either required or has label, build top-left table cell
Element tdElement = appendChildElement("td", trElement); //$NON-NLS-1$
appendAttribute(tdElement, "style", STYLE_LABELTD); //$NON-NLS-1$
appendAttribute(tdElement, "valign", "top"); //$NON-NLS-1$ //$NON-NLS-2$
appendAttribute(tdElement, "nowrap", ""); //$NON-NLS-1$ //$NON-NLS-2$
if (isRequired(srcElement)) {
Element spanElement = appendChildElement("span", tdElement); //$NON-NLS-1$
appendAttribute(spanElement, "title", "Required"); //$NON-NLS-1$ //$NON-NLS-2$
appendAttribute(spanElement, "style", STYLE_REQUIREDSPAN); //$NON-NLS-1$
appendChildText("* ", spanElement); //$NON-NLS-1$
}
if (getLabel(srcElement) != null) {
Element labelElement = appendChildElement("label", tdElement); //$NON-NLS-1$
appendChildText(getLabel(srcElement), labelElement);
}
}
//build content table cell
Element tdElement = appendChildElement("td", trElement); //$NON-NLS-1$
appendAttribute(tdElement, "valign", "top"); //$NON-NLS-1$ //$NON-NLS-2$
appendAttribute(tdElement, "nowrap", ""); //$NON-NLS-1$ //$NON-NLS-2$
appendControl(srcElement, tdElement);
List<Node> helpFacetChildNodes = getHelpFacetChildNodes(srcElement);
if (helpFacetChildNodes.size() > 0) {
//build help table row
trElement = appendChildElement("tr", outerElement); //$NON-NLS-1$
if (isRequired(srcElement) || getLabel(srcElement) != null) {
tdElement = appendChildElement("td", trElement); //$NON-NLS-1$
}
tdElement = appendChildElement("td", trElement); //$NON-NLS-1$
Element spanElement = appendChildElement("span", tdElement); //$NON-NLS-1$
operation =
TransformOperationFactory.getInstance().getTransformOperation(
TransformOperationFactory.OP_CopyAttributeWithRenameOperation,
new String[]{"styleClass", "class"}); //$NON-NLS-1$ //$NON-NLS-2$
operation.transform(srcElement, spanElement);
appendAttribute(spanElement, "style", //$NON-NLS-1$
calculateStyle(STYLE_HELPSPAN, srcElement, "inlineStyle")); //$NON-NLS-1$
Iterator<Node> itHelpFacetChildNodes = helpFacetChildNodes.iterator();
int curPos = 0;
while (itHelpFacetChildNodes.hasNext()) {
Node curNode = itHelpFacetChildNodes.next();
if (curNode instanceof Text) {
if (curNode.getNodeValue() != null && curNode.getNodeValue().length() > 0) {
tagConverterContext.addChild(
curNode,
new ConvertPosition(spanElement, curPos));
}
} else {
tagConverterContext.addChild(
curNode,
new ConvertPosition(spanElement, curPos));
}
curPos++;
}
}
}
return outerElement;
}
protected String calculateStyle(
String baseStyle, Element srcElement, String styleAttributeName) {
String style = baseStyle;
if (srcElement != null && styleAttributeName != null) {
String srcElementStyle = srcElement.getAttribute(styleAttributeName);
if (srcElementStyle != null && srcElementStyle.length() > 0) {
if (style != null) {
if (!style.endsWith(";")) { //$NON-NLS-1$
style += ";"; //$NON-NLS-1$
}
style += srcElementStyle;
} else {
style = srcElementStyle;
}
}
}
return style;
}
protected boolean isRequired(Element srcElement) {
boolean required = false;
if (!isChildOfPanelFormLayout(srcElement)) {
if (srcElement != null) {
String requiredVal = srcElement.getAttribute("required"); //$NON-NLS-1$
String showRequiredVal = srcElement.getAttribute("showRequired"); //$NON-NLS-1$
//if either are true, for the purposes of tag conversion, consider required to be true
required =
Boolean.parseBoolean(requiredVal) ||
Boolean.parseBoolean(showRequiredVal);
}
}
return required;
}
protected String getLabel(Element srcElement) {
String label = null;
if (!isChildOfPanelFormLayout(srcElement)) {
if (srcElement != null) {
String labelAndAccessKeyVal = srcElement.getAttribute("labelAndAccessKey"); //$NON-NLS-1$
if (labelAndAccessKeyVal != null && labelAndAccessKeyVal.length() > 0) {
label = labelAndAccessKeyVal;
} else {
String labelVal = srcElement.getAttribute("label"); //$NON-NLS-1$
if (labelVal != null && labelVal.length() > 0) {
label = labelVal;
}
}
}
}
return label;
}
protected List<Node> getHelpFacetChildNodes(Element srcElement) {
@SuppressWarnings("unchecked")
List<Node> children = Collections.EMPTY_LIST;
Element helpFacet = getChildFacetByName(srcElement, "help"); //$NON-NLS-1$
if (helpFacet != null) {
children = getCopyChildrenNodes(helpFacet);
}
return children;
}
protected int getColumns(Element srcElement) {
int columns = 30;
if (srcElement != null) {
String columnsValue = srcElement.getAttribute("columns"); //$NON-NLS-1$
if (columnsValue != null && columnsValue.length() > 0) {
try {
columns = Integer.parseInt(columnsValue);
} catch(NumberFormatException nfe) {
//ignore; default value will be returned
}
}
}
return columns;
}
protected boolean isChildOfPanelFormLayout(Element srcElement) {
boolean isChild = false;
if (srcElement != null) {
Node parent = srcElement.getParentNode();
if (parent instanceof Element) {
TagIdentifier tagID = TagIdentifierFactory.createDocumentTagWrapper((Element)parent);
if (ITrinidadConstants.TAG_IDENTIFIER_PANELFORMLAYOUT.isSameTagType(tagID)) {
isChild = true;
} else if (ITrinidadConstants.TAG_IDENTIFIER_GROUP.isSameTagType(tagID)) {
isChild = isChildOfPanelFormLayout((Element)parent);
} else if (IJSFConstants.TAG_IDENTIFIER_FACET.isSameTagType(tagID)) {
isChild = isChildOfPanelFormLayout((Element)parent);
}
}
}
return isChild;
}
}
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