public void expandNode(PdfObjectTreeNode node) {
if (node.getChildCount() > 0) {
return;
}
PdfObject object = node.getPdfObject();
PdfObjectTreeNode leaf;
switch (object.type()) {
case PdfObject.INDIRECT:
PdfIndirectReference ref = (PdfIndirectReference) object;
leaf = getNode(ref.getNumber());
addNodes(node, leaf);
if (leaf instanceof PdfPagesTreeNode) expandNode(leaf);
return;
case PdfObject.ARRAY:
PdfArray array = (PdfArray) object;
for (Iterator<PdfObject> it = array.listIterator(); it.hasNext(); ) {
leaf = PdfObjectTreeNode.getInstance(it.next());
addNodes(node, leaf);
expandNode(leaf);
}
return;
case PdfObject.DICTIONARY:
case PdfObject.STREAM:
PdfDictionary dict = (PdfDictionary) object;
for (Iterator<PdfName> it = dict.getKeys().iterator(); it.hasNext(); ) {
leaf = PdfObjectTreeNode.getInstance(dict, it.next());
addNodes(node, leaf);
expandNode(leaf);
}
return;
}
}
protected PdfObjectTreeNode(PdfObject object) {
super(null, getCaption(object));
this.object = object;
switch (object.type()) {
case PdfObject.INDIRECT:
if (isRecursive()) icon = IconFetcher.getIcon("ref_recursive.png");
else icon = IconFetcher.getIcon("ref.png");
return;
case PdfObject.ARRAY:
icon = IconFetcher.getIcon("array.png");
return;
case PdfObject.DICTIONARY:
icon = IconFetcher.getIcon("dictionary.png");
return;
case PdfObject.STREAM:
icon = IconFetcher.getIcon("stream.png");
return;
case PdfObject.BOOLEAN:
icon = IconFetcher.getIcon("boolean.png");
return;
case PdfObject.NAME:
icon = IconFetcher.getIcon("name.png");
return;
case PdfObject.NULL:
icon = IconFetcher.getIcon("null.png");
return;
case PdfObject.NUMBER:
icon = IconFetcher.getIcon("number.png");
return;
case PdfObject.STRING:
icon = IconFetcher.getIcon("string.png");
return;
}
}
public static String getCaption(PdfObject object) {
if (object == null) return "null";
switch (object.type()) {
case PdfObject.INDIRECT:
return "Indirect reference: " + object.toString();
case PdfObject.ARRAY:
return "Array";
case PdfObject.STREAM:
return "Stream";
case PdfObject.STRING:
return ((PdfString) object).toUnicodeString();
}
return object.toString();
}
public boolean isIndirectReference() {
return object.type() == PdfObject.INDIRECT;
}