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/*******************************************************************************
* Copyright (c) 2001, 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
* Jens Lukowski/Innoopract - initial renaming/restructuring
*
*******************************************************************************/
package org.eclipse.wst.dtd.core.internal;
import java.util.List;
import org.eclipse.swt.graphics.Image;
import org.eclipse.wst.dtd.core.internal.parser.DTDRegionTypes;
import org.eclipse.wst.dtd.core.internal.text.RegionIterator;
import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocumentRegion;
import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegion;
public class ParameterEntityReference extends NamedTopLevelNode {
public class StartEndPair {
public int startOffset, endOffset;
}
private Entity cachedEntity = null;
public ParameterEntityReference(DTDFile file, IStructuredDocumentRegion flatNode) {
super(file, flatNode, DTDRegionTypes.COMMENT_START);
}
public Entity getEntityObject() {
if (cachedEntity != null && !cachedEntity.getName().equals(getReferencedEntity())) {
// if we have a cached entity, but the name doesnt match,
// null it now, so we perform a lookup
cachedEntity = null;
}
if (cachedEntity == null) {
List nodes = getDTDFile().getNodes();
for (int i = 0; i < nodes.size(); i++) {
DTDNode node = (DTDNode) nodes.get(i);
if (node instanceof Entity) {
Entity entity = (Entity) node;
if (entity.isParameterEntity() && entity.getName().equals(getReferencedEntity())) {
cachedEntity = entity;
}
}
}
}
return cachedEntity;
}
public Image getImage() {
return DTDCorePlugin.getInstance().getImage(DTDResource.ENTITYREFERENCEICON);
}
public String getName() {
return getStructuredDTDDocumentRegion().getText();
}
public String getReferencedEntity() {
String text = getName();
return getName().substring(1, text.length() - 1);
}
private void getStartAndEndOffsetForText(StartEndPair pair) {
RegionIterator iter = iterator();
ITextRegion commentStartTag = getStartTag(iter);
ITextRegion endCommentTag = getNextRegion(iter, DTDRegionTypes.COMMENT_END);
pair.endOffset = getStructuredDTDDocumentRegion().getEndOffset();
if (commentStartTag != null) {
pair.startOffset = getStructuredDTDDocumentRegion().getEndOffset(commentStartTag);
}
if (endCommentTag != null) {
pair.endOffset = getStructuredDTDDocumentRegion().getEndOffset(endCommentTag);
}
}
public String getText() {
String text = getStructuredDTDDocumentRegion().getText();
int flatNodeStart = getStructuredDTDDocumentRegion().getStartOffset();
StartEndPair pair = new StartEndPair();
getStartAndEndOffsetForText(pair);
return text.substring(pair.startOffset - flatNodeStart, pair.endOffset - flatNodeStart);
}
public void setReferencedEntity(Object requestor, String name) {
replaceText(requestor, getStructuredDTDDocumentRegion().getStartOffset(), getStructuredDTDDocumentRegion().getLength(), "%" + name + ";"); //$NON-NLS-1$ //$NON-NLS-2$
}
public void setReferencedEntity(String name) {
beginRecording(this, DTDCoreMessages._UI_LABEL_PARM_ENTITY_REF_CHG_ENTITY_REF); //$NON-NLS-1$
setReferencedEntity(this, name);
endRecording(this);
}
public void setText(String newText) {
beginRecording(this, DTDCoreMessages._UI_LABEL_PARM_ENTITY_REF_COMMENT_CHG); //$NON-NLS-1$
StartEndPair pair = new StartEndPair();
getStartAndEndOffsetForText(pair);
replaceText(this, pair.startOffset, pair.endOffset - pair.startOffset, newText);
endRecording(this);
}
}
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