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/*
* $Id$
* Copyright (C) 2001-2002 The Apache Software Foundation. All rights reserved.
* For details on use and redistribution please refer to the
* LICENSE file included with these sources.
*/
package org.apache.fop.fo.flow;
// FOP
import org.apache.fop.fo.FONode;
import org.apache.fop.layout.AccessibilityProps;
import org.apache.fop.layout.AuralProps;
import org.apache.fop.layout.BorderAndPadding;
import org.apache.fop.layout.BackgroundProps;
import org.apache.fop.layout.MarginInlineProps;
import org.apache.fop.layout.RelativePositionProps;
import org.apache.fop.area.inline.InlineParent;
import org.apache.fop.area.Trait;
import org.apache.fop.area.Resolveable;
import org.apache.fop.area.PageViewport;
import org.apache.fop.area.Area;
import org.apache.fop.layoutmgr.InlineStackingLayoutManager;
import org.apache.fop.layoutmgr.LMiter;
import org.apache.fop.layoutmgr.LayoutManager;
// Java
import java.util.List;
import java.io.Serializable;
/**
* The basic link.
* This sets the basic link trait on the inline parent areas
* that are created by the fo element.
*/
public class BasicLink extends Inline {
String link = null;
boolean external = false;
public BasicLink(FONode parent) {
super(parent);
}
// add start and end properties for the link
public void addLayoutManager(List lms) {
setup();
lms.add(new InlineStackingLayoutManager(this,
new LMiter(children.listIterator())) {
protected InlineParent createArea() {
InlineParent area = super.createArea();
setupLinkArea(parentLM, area);
return area;
}
});
}
protected void setupLinkArea(LayoutManager parentLM, InlineParent area) {
if (link == null) {
return;
}
if (external) {
area.addTrait(Trait.EXTERNAL_LINK, link);
} else {
PageViewport page = parentLM.resolveRefID(link);
if (page != null) {
area.addTrait(Trait.INTERNAL_LINK, page);
} else {
LinkResolver res = new LinkResolver(link, area);
parentLM.addUnresolvedArea(link, res);
}
}
}
public void setup() {
String destination;
int linkType;
// Common Accessibility Properties
AccessibilityProps mAccProps = propMgr.getAccessibilityProps();
// Common Aural Properties
AuralProps mAurProps = propMgr.getAuralProps();
// Common Border, Padding, and Background Properties
BorderAndPadding bap = propMgr.getBorderAndPadding();
BackgroundProps bProps = propMgr.getBackgroundProps();
// Common Margin Properties-Inline
MarginInlineProps mProps = propMgr.getMarginInlineProps();
// Common Relative Position Properties
RelativePositionProps mRelProps = propMgr.getRelativePositionProps();
// this.properties.get("alignment-adjust");
// this.properties.get("alignment-baseline");
// this.properties.get("baseline-shift");
// this.properties.get("destination-place-offset");
// this.properties.get("dominant-baseline");
String ext = properties.get("external-destination").getString();
setupID();
// this.properties.get("indicate-destination");
String internal = properties.get("internal-destination").getString();
if (ext.length() > 0) {
link = ext;
external = true;
} else if (internal.length() > 0) {
link = internal;
} else {
getLogger().error("basic-link requires an internal or external destination");
}
// this.properties.get("keep-together");
// this.properties.get("keep-with-next");
// this.properties.get("keep-with-previous");
// this.properties.get("line-height");
// this.properties.get("line-height-shift-adjustment");
// this.properties.get("show-destination");
// this.properties.get("target-processing-context");
// this.properties.get("target-presentation-context");
// this.properties.get("target-stylesheet");
}
/**
* Link resolving for resolving internal links.
*/
protected static class LinkResolver implements Resolveable, Serializable {
private boolean resolved = false;
private String idRef;
private Area area;
public LinkResolver(String id, Area a) {
idRef = id;
area = a;
}
public boolean isResolved() {
return resolved;
}
public String[] getIDs() {
return new String[] {idRef};
}
/**
* Resolve by adding an internal link.
*/
public void resolve(String id, List pages) {
resolved = true;
if (idRef.equals(id) && pages != null) {
PageViewport page = (PageViewport)pages.get(0);
area.addTrait(Trait.INTERNAL_LINK, page);
}
}
}
}
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