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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* $Id$ */
package org.apache.fop.fo.flow;
import org.xml.sax.Locator;
import org.apache.fop.apps.FOPException;
import org.apache.fop.fo.FONode;
import org.apache.fop.fo.PropertyList;
import org.apache.fop.fo.ValidationException;
/**
* Class modelling the fo:basic-link object.
*
* This class contains the logic to determine the link represented by this FO,
* and whether that link is external (uses a URI) or internal (an id
* reference).
*/
public class BasicLink extends Inline {
// The value of properties relevant for fo:basic-link.
// private ToBeImplementedProperty destinationPlacementOffset;
private String externalDestination;
// private ToBeImplementedProperty indicateDestination;
private String internalDestination;
// private ToBeImplementedProperty showDestination;
// private ToBeImplementedProperty targetProcessingContext;
// private ToBeImplementedProperty targetPresentationContext;
// private ToBeImplementedProperty targetStylesheet;
// Unused but valid items, commented out for performance:
// private int dominantBaseline;
// End of property values
// used only for FO validation
private boolean blockOrInlineItemFound = false;
/**
* @param parent FONode that is the parent of this object
*/
public BasicLink(FONode parent) {
super(parent);
}
/**
* {@inheritDoc}
*/
public void bind(PropertyList pList) throws FOPException {
super.bind(pList);
// destinationPlacementOffset = pList.get(PR_DESTINATION_PLACEMENT_OFFSET);
externalDestination = pList.get(PR_EXTERNAL_DESTINATION).getString();
// indicateDestination = pList.get(PR_INDICATE_DESTINATION);
internalDestination = pList.get(PR_INTERNAL_DESTINATION).getString();
// showDestination = pList.get(PR_SHOW_DESTINATION);
// targetProcessingContext = pList.get(PR_TARGET_PROCESSING_CONTEXT);
// targetPresentationContext = pList.get(PR_TARGET_PRESENTATION_CONTEXT);
// targetStylesheet = pList.get(PR_TARGET_STYLESHEET);
// per spec, internal takes precedence if both specified
if (internalDestination.length() > 0) {
externalDestination = null;
} else if (externalDestination.length() == 0) {
// slightly stronger than spec "should be specified"
getFOValidationEventProducer().missingLinkDestination(this, getName(), locator);
}
}
/**
* {@inheritDoc}
*/
protected void startOfNode() throws FOPException {
super.startOfNode();
getFOEventHandler().startLink(this);
}
/**
* {@inheritDoc}
*/
protected void endOfNode() throws FOPException {
super.endOfNode();
getFOEventHandler().endLink();
}
/**
* {@inheritDoc} String, String)
* XSL Content Model: marker* (#PCDATA|%inline;|%block;)*
*/
protected void validateChildNode(Locator loc, String nsURI, String localName)
throws ValidationException {
if (FO_URI.equals(nsURI)) {
if (localName.equals("marker")) {
if (blockOrInlineItemFound) {
nodesOutOfOrderError(loc, "fo:marker", "(#PCDATA|%inline;|%block;)");
}
} else if (!isBlockOrInlineItem(nsURI, localName)) {
invalidChildError(loc, nsURI, localName);
} else {
blockOrInlineItemFound = true;
}
}
}
/**
* @return the "internal-destination" property.
*/
public String getInternalDestination() {
return internalDestination;
}
/**
* @return the "external-destination" property.
*/
public String getExternalDestination() {
return externalDestination;
}
/**
* @return whether or not this basic link has an internal destination or not
*/
public boolean hasInternalDestination() {
return internalDestination != null && internalDestination.length() > 0;
}
/**
* @return whether or not this basic link has an external destination or not
*/
public boolean hasExternalDestination() {
return externalDestination != null && externalDestination.length() > 0;
}
/** {@inheritDoc} */
public String getLocalName() {
return "basic-link";
}
/** {@inheritDoc} */
public int getNameId() {
return FO_BASIC_LINK;
}
}
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