/**
* Updates the layout. It is designed to do a re-layout only, not to process input data again.
*
* @param root the root
* @param newDimension the new dimension
* @param cba the CSSBoxAnalyzer
* @return the list
* @throws IOException Signals that an I/O exception has occurred.
*/
public List<ElementSpec> update(ElementBox root, Dimension newDimension, CSSBoxAnalyzer cba)
throws IOException {
if (cba == null)
throw new IllegalArgumentException(
"CSSBoxAnalyzer can not be NULL !!!\nProvide your custom implementation or check instantiation of DefaultAnalyzer object...");
List<ElementSpec> elements = new LinkedList<ElementSpec>();
elements.add(new ElementSpec(SimpleAttributeSet.EMPTY, ElementSpec.EndTagType));
ElementBox tmp;
try {
tmp = cba.update(root, newDimension);
} catch (Exception e) {
throw new IOException(e);
}
if (tmp instanceof Viewport) {
// tmp should by an instance of Viewport
buildViewport(elements, (Viewport) tmp);
} else {
buildElements(elements, tmp);
}
return elements;
}
/**
* Reads input data and converts them to "elements"
*
* @param is the input source
* @param url the source of data
* @param cba the instance of {@link CSSBoxAnalyzer}
* @return the list of elements. Note that, this method returns instance of LinkedList.
* @throws IOException Signals that an I/O exception has occurred.
*/
public List<ElementSpec> read(DocumentSource docSource, CSSBoxAnalyzer cba, Dimension dim)
throws IOException {
// ale ked sa pouzije setText() neviem nic o url, nic sa nenastavuje ,
// moze byt null
// (URL) doc.getProperty(Document.StreamDescriptionProperty)
if (cba == null)
throw new IllegalArgumentException(
"CSSBoxAnalyzer can not be NULL !!!\nProvide your custom implementation or check instantiation of DefaultAnalyzer object...");
List<ElementSpec> elements = new LinkedList<ElementSpec>(); // ArrayList<ElementSpec>(1024);
elements.add(new ElementSpec(SimpleAttributeSet.EMPTY, ElementSpec.EndTagType));
// System.err.print("used Reader and encoding ? " +
// is.getCharacterStream() + " , ");
// InputStreamReader r = (InputStreamReader)is.getCharacterStream();
// System.err.println(r.getEncoding());
ElementBox root;
try {
// System.err.println("analyzing...");
root = cba.analyze(docSource, dim);
// System.err.println("analyzing finished...");
} catch (Exception e) {
throw new IOException(e);
}
if (root instanceof Viewport) {
// root should by an instance of Viewport
buildViewport(elements, (Viewport) root);
} else {
buildElements(elements, root);
}
// System.err.println("num. of elements : " + elements.size());
// System.err.println("Root min width : " + root.getMinimalWidth() +
// " ,normal width : " + root.getWidth() + " ,maximal width : " +
// root.getMaximalWidth());
// TODO po skonceni nacitavania aj nejake info spravit
// >> Document.TitleProperty - observer, metainfo
return elements;
}