public void navigateTo(String rawHref) {
this.prevIndex = this.getIndex();
this.prevPos = this.getPosition();
// URLDecode the href, so it does not contain %20 etc.
String href =
URLDecoder.decode(StringUtil.substringBefore(rawHref, Constants.FRAGMENT_SEPARATOR_CHAR));
// Don't decode the anchor.
String anchor = StringUtil.substringAfterLast(rawHref, Constants.FRAGMENT_SEPARATOR_CHAR);
if (!"".equals(anchor)) {
this.storedAnchor = anchor;
}
// Just an anchor and no href; resolve it on this page
if (href.length() == 0) {
restorePosition();
} else {
this.strategy.clearText();
this.strategy.setPosition(0);
if (this.spine.navigateByHref(href)) {
loadText();
} else {
executeTask(new LoadTextTask(), href);
}
}
}
/**
* Check whether a resource is valid. A valid resource must have a non-blank ID, a non-blank link
* and a media type.
*
* @param book the book the resource is for
* @param resource the resource to check
* @return whether the resource is valid
*/
private static boolean isValidResource(final Book book, final Resource resource) {
if (resource == null
|| (resource.getMediaType() == MediatypeService.NCX
&& book.getSpine().getTocResource() != null)) {
return false;
}
if (StringUtil.isBlank(resource.getId())) {
LOGGER.error(
"resource id must not be blank (href: "
+ resource.getHref()
+ ", mediatype:"
+ resource.getMediaType()
+ ")");
return false;
}
if (StringUtil.isBlank(resource.getHref())) {
LOGGER.error(
"resource href must not be blank (id: "
+ resource.getId()
+ ", mediatype:"
+ resource.getMediaType()
+ ")");
return false;
}
if (resource.getMediaType() == null) {
LOGGER.error(
"resource media type must be specified (id: "
+ resource.getId()
+ ", href:"
+ resource.getHref()
+ ")");
return false;
}
return true;
}
private static void writeGuideReference(GuideReference reference, XmlSerializer serializer)
throws IOException {
if (reference != null) {
serializer.startTag(NAMESPACE_OPF, OPFElements.REFERENCE);
serializer.attribute(PREFIX_EMPTY, OPFAttributes.TYPE, reference.getType());
serializer.attribute(PREFIX_EMPTY, OPFAttributes.HREF, reference.getCompleteHref());
if (StringUtil.isNotBlank(reference.getTitle())) {
serializer.attribute(PREFIX_EMPTY, OPFAttributes.TITLE, reference.getTitle());
}
serializer.endTag(NAMESPACE_OPF, OPFElements.REFERENCE);
}
}
public String toString() {
return StringUtil.toString(
"id",
id,
"title",
title,
"encoding",
inputEncoding,
"mediaType",
mediaType,
"href",
href,
"size",
(data == null ? 0 : data.length));
}
/**
* Write a resource as an item element.
*
* @param serializer the XML serialiser to write the item element to
* @param book the book to write the resource for
* @param resource the resource to write as an item element
* @throws IOException if an I/O error occurs
*/
private static void writeItem(
final XmlSerializer serializer, final Book book, final Resource resource) throws IOException {
if (!isValidResource(book, resource)) {
return;
}
serializer.startTag(NAMESPACE_OPF, OPFElements.ITEM);
serializer.attribute(PREFIX_EMPTY, OPFAttributes.ID, resource.getId());
serializer.attribute(PREFIX_EMPTY, OPFAttributes.HREF, resource.getHref());
serializer.attribute(PREFIX_EMPTY, OPFAttributes.MEDIA_TYPE, resource.getMediaType().getName());
if (StringUtil.isNotBlank(resource.getProperties())) {
serializer.attribute(PREFIX_EMPTY, OPFAttributes.PROPERTIES, resource.getProperties());
}
serializer.endTag(NAMESPACE_OPF, OPFElements.ITEM);
}
@Override
protected List<List<Integer>> doInBackground(Object... params) {
try {
List<List<Integer>> offsets = new ArrayList<List<Integer>>();
for (int i = 0; i < spine.size(); i++) {
offsets.add(getOffsetsForResource(i));
}
String file = StringUtil.substringAfterLast(fileName, '/');
configuration.setPageOffsets(file, offsets);
return offsets;
} catch (IOException io) {
LOG.error("Could not read pagenumers", io);
}
return null;
}
private void setBook(Book book) {
BookView.this.book = book;
BookView.this.spine = new PageTurnerSpine(book);
String file = StringUtil.substringAfterLast(fileName, '/');
BookView.this.spine.navigateByIndex(BookView.this.storedIndex);
if (configuration.isShowPageNumbers()) {
List<List<Integer>> offsets = configuration.getPageOffsets(file);
if (offsets != null && offsets.size() > 0) {
spine.setPageOffsets(offsets);
needToCalcPageNumbers = false;
} else {
needToCalcPageNumbers = true;
}
}
}
private String getPackageResourceHref(Resources resources) {
String defaultResult = "OEBPS/content.opf";
String result = defaultResult;
Resource containerResource = resources.remove("META-INF/container.xml");
if (containerResource == null) {
return result;
}
try {
Document document = ResourceUtil.getAsDocument(containerResource);
Element rootFileElement =
(Element)
((Element) document.getDocumentElement().getElementsByTagName("rootfiles").item(0))
.getElementsByTagName("rootfile")
.item(0);
result = rootFileElement.getAttribute("full-path");
} catch (Exception e) {
log.error(e.getMessage(), e);
}
if (StringUtil.isBlank(result)) {
result = defaultResult;
}
return result;
}
