/*******************************************************************************
* Copyright (c) 2004, 2005 IBM 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.wst.html.core.internal.document;
import java.util.Iterator;
import org.eclipse.wst.sse.core.internal.provisional.INodeNotifier;
import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocument;
import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocumentRegion;
import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegion;
import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegionList;
import org.eclipse.wst.xml.core.internal.document.TagAdapter;
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.regions.DOMRegionContext;
/**
*/
public class MetaDataAdapter implements TagAdapter, MetaData {
private IDOMElement element = null;
private String type = null;
private String data = null;
private String endData = null;
/**
*/
public MetaDataAdapter(String type) {
super();
if (type != null) {
if (type.equals(ANNOTATION)) {
this.type = ANNOTATION;
}
else if (type.equals(AUTHOR_TIME_VISUAL)) {
this.type = AUTHOR_TIME_VISUAL;
}
else {
this.type = type;
}
}
}
/**
*/
private String getData(IStructuredDocumentRegion flatNode) {
if (flatNode == null)
return null;
ITextRegionList regions = flatNode.getRegions();
if (regions == null)
return null;
String data = null;
Iterator e = regions.iterator();
while (e.hasNext()) {
ITextRegion region = (ITextRegion) e.next();
String regionType = region.getType();
if (isCommentText(regionType)) {
data = flatNode.getText(region);
break;
}
}
if (data == null)
return null;
int length = data.length();
int offset = 0;
for (; offset < length; offset++) {
char c = data.charAt(offset);
if (c == '\r' || c == '\n') {
offset++;
break;
}
}
for (; offset < length; offset++) {
char c = data.charAt(offset);
if (c != '\r' && c != '\n') {
break;
}
}
return data.substring(offset);
}
private boolean isCommentText(String regionType) {
boolean result = false;
result = isDOMComment(regionType) || isNestedContentComment(regionType);
return result;
}
/**
* ISSUE: this is a bit of hidden JSP knowledge that was implemented this
* way for expedency. Should be evolved in future to depend on
* "nestedContext".
*/
private boolean isNestedContentComment(String regionType) {
final String JSP_COMMENT_TEXT = "JSP_COMMENT_TEXT"; //$NON-NLS-1$
return regionType.equals(JSP_COMMENT_TEXT);
}
private boolean isDOMComment(String regionType) {
return regionType == DOMRegionContext.XML_COMMENT_TEXT;
}
public String getData() {
if (this.element == null)
return null;
IStructuredDocumentRegion flatNode = this.element.getStartStructuredDocumentRegion();
if (flatNode == null)
return null;
if (this.data != null)
return this.data;
return getData(flatNode);
}
/**
*/
private String getDelimiter(IDOMModel model) {
String delim = null;
if (model != null) {
IStructuredDocument structuredDocument = model.getStructuredDocument();
if (structuredDocument != null)
delim = structuredDocument.getLineDelimiter();
}
if (delim == null)
delim = "\r\n";//$NON-NLS-1$
return delim;
}
/**
*/
public String getEndData() {
if (this.element == null)
return null;
IStructuredDocumentRegion flatNode = this.element.getEndStructuredDocumentRegion();
if (flatNode == null)
return null;
if (this.endData != null)
return this.endData;
return getData(flatNode);
}
/**
*/
public String getEndTag(IDOMElement element) {
StringBuffer buffer = new StringBuffer();
if (element.isJSPTag())
buffer.append("<%--");//$NON-NLS-1$
else
buffer.append("<!--");//$NON-NLS-1$
buffer.append(METADATA);
buffer.append(' ');
buffer.append(TYPE);
buffer.append("=\"");//$NON-NLS-1$
buffer.append(this.type);
buffer.append("\" ");//$NON-NLS-1$
buffer.append(MetaData.ENDSPAN);
String data = getEndData();
if (data != null && data.length() > 0) {
String delim = getDelimiter(element.getModel());
buffer.append(delim);
buffer.append(data);
buffer.append(delim);
}
if (element.isJSPTag())
buffer.append("--%>");//$NON-NLS-1$
else
buffer.append("-->");//$NON-NLS-1$
return buffer.toString();
}
/**
*/
public String getStartTag(IDOMElement element) {
StringBuffer buffer = new StringBuffer();
if (element.isJSPTag())
buffer.append("<%--");//$NON-NLS-1$
else
buffer.append("<!--");//$NON-NLS-1$
buffer.append(METADATA);
buffer.append(' ');
buffer.append(TYPE);
buffer.append("=\"");//$NON-NLS-1$
buffer.append(this.type);
buffer.append("\" ");//$NON-NLS-1$
buffer.append(MetaData.STARTSPAN);
String data = getData();
if (data != null && data.length() > 0) {
String delim = getDelimiter(element.getModel());
buffer.append(delim);
buffer.append(data);
buffer.append(delim);
}
if (element.isJSPTag())
buffer.append("--%>");//$NON-NLS-1$
else
buffer.append("-->");//$NON-NLS-1$
return buffer.toString();
}
/**
*/
public String getType() {
return this.type;
}
/**
*/
public boolean isAdapterForType(Object type) {
return (type == TagAdapter.class || type == MetaDataAdapter.class);
}
/**
*/
public boolean isEndTag() {
if (this.element == null)
return false;
if (this.element.hasStartTag())
return false;
if (this.element.hasEndTag())
return true;
if (this.data != null)
return false;
return (this.endData != null);
}
/**
*/
public boolean isRuntimeContainer() {
return (this.type == ANNOTATION || this.type == AUTHOR_TIME_VISUAL);
}
/**
*/
public void notifyChanged(INodeNotifier notifier, int eventType, Object changedFeature, Object oldValue, Object newValue, int pos) {
}
/**
*/
public void setData(String data) {
this.data = data;
if (this.element != null)
this.element.notifyStartTagChanged();
}
/**
*/
public void setEndData(String data) {
this.endData = data;
if (this.element != null)
this.element.notifyEndTagChanged();
}
/**
*/
public void setElement(IDOMElement element) {
this.element = element;
if (this.element != null) {
this.element.setCommentTag(true);
if (this.type != MetaData.ANNOTATION) {
this.element.setJSPTag(true);
}
}
}
/**
*/
public void setRuntimeSource(String source) {
if (source == null)
return;
if (this.element == null)
return;
if (isRuntimeContainer())
return;
IDOMModel model = this.element.getModel();
if (model == null)
return;
IStructuredDocument structuredDocument = model.getStructuredDocument();
if (structuredDocument == null)
return;
int offset = this.element.getStartEndOffset();
int end = this.element.getEndStartOffset();
int length = end - offset;
structuredDocument.replaceText(model, offset, length, source);
}
}