Examples of org.jaudiotagger.utils.tree.DefaultMutableTreeNode$BreadthFirstEnumeration$Queue

org.jaudiotagger.utils.tree.DefaultMutableTreeNode
sun.com/docs/books/tutorial/uiswing/components/tree.html">How to Use Trees in The Java Tutorial.

A tree node may have at most one parent and 0 or more children. DefaultMutableTreeNode provides operations for examining and modifying a node's parent and children and also operations for examining the tree that the node is a part of. A node's tree is the set of all nodes that can be reached by starting at the node and following all the possible links to parents and children. A node with no parent is the root of its tree; a node with no children is a leaf. A tree may consist of many subtrees, each node acting as the root for its own subtree.
This class provides enumerations for efficiently traversing a tree or subtree in various orders or for following the path between two nodes. A DefaultMutableTreeNode may also hold a reference to a user object, the use of which is left to the user. Asking a DefaultMutableTreeNode for its string representation with toString() returns the string representation of its user object.
This is not a thread safe class.If you intend to use a DefaultMutableTreeNode (or a tree of TreeNodes) in more than one thread, you need to do your own synchronizing. A good convention to adopt is synchronizing on the root node of a tree.
While DefaultMutableTreeNode implements the MutableTreeNode interface and will allow you to add in any implementation of MutableTreeNode not all of the methods in DefaultMutableTreeNode will be applicable to all MutableTreeNodes implementations. Especially with some of the enumerations that are provided, using some of these methods assumes the DefaultMutableTreeNode contains only DefaultMutableNode instances. All of the TreeNode/MutableTreeNode methods will behave as defined no matter what implementations are added.

Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans^TM has been added to the java.beans package. Please see {@link java.beans.XMLEncoder}. @author Rob Davis @version 1.25 03/23/10 @see MutableTreeNode


public class QueueTest 
{
   public static void main( String args[] )
   {
      Queue queue = new Queue();  


      // use enqueue method
      queue.enqueue( -1 );
      queue.print();
      queue.enqueue( 0 );
      queue.print();
      queue.enqueue( 1 );
      queue.print();
      queue.enqueue( 5 );
      queue.print();


      // remove objects from queue
      try 
      {
         Object removedObject = null;


         while ( true ) 
         {
            removedObject = queue.dequeue(); // use dequeue method
            System.out.printf( "%s dequeued\n", removedObject );
            queue.print();
         } // end while
      } // end try
      catch ( EmptyListException emptyListException ) 
      {
         emptyListException.printStackTrace();

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        topLevelFreePosition = 0;
        topLevelFreeSize = 0;
        topLevelFreeAtomComesBeforeMdatAtomAndAfterMetadata = true;
        topLevelFreeAtomComesBeforeMdatAndMetadata = false;
        for (DefaultMutableTreeNode freeNode : atomTree.getFreeNodes()) {
            DefaultMutableTreeNode parentNode = (DefaultMutableTreeNode) freeNode.getParent();
            if (parentNode.isRoot()) {
                topLevelFreeHeader = ((Mp4BoxHeader) freeNode.getUserObject());
                topLevelFreeSize = topLevelFreeHeader.getLength();
                topLevelFreePosition = (int) topLevelFreeHeader.getFilePos();
                break;
            }

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    private int getMetaLevelFreeAtomSize(Mp4AtomTree atomTree) {
        int oldMetaLevelFreeAtomSize;//Level 4 - Free
        oldMetaLevelFreeAtomSize = 0;


        for (DefaultMutableTreeNode freeNode : atomTree.getFreeNodes()) {
            DefaultMutableTreeNode parentNode = (DefaultMutableTreeNode) freeNode.getParent();
            DefaultMutableTreeNode brotherNode = freeNode.getPreviousSibling();
            if (!parentNode.isRoot()) {
                Mp4BoxHeader parentHeader = ((Mp4BoxHeader) parentNode.getUserObject());
                Mp4BoxHeader freeHeader = ((Mp4BoxHeader) freeNode.getUserObject());


                //We are only interested in free atoms at this level if they come after the ilst node
                if (brotherNode != null) {
                    Mp4BoxHeader brotherHeader = ((Mp4BoxHeader) brotherNode.getUserObject());


                    if (parentHeader.getId().equals(Mp4NotMetaFieldKey.META.getFieldName())
                            &&
                            brotherHeader.getId().equals(Mp4NotMetaFieldKey.ILST.getFieldName())) {
                        oldMetaLevelFreeAtomSize = freeHeader.getLength();

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            //make sure at start of file
            fc.position(0);


            //Build up map of nodes
            rootNode = new DefaultMutableTreeNode();
            dataTree = new DefaultTreeModel(rootNode);


            //Iterate though all the top level Nodes
            ByteBuffer headerBuffer = ByteBuffer.allocate(Mp4BoxHeader.HEADER_LENGTH);
            while (fc.position() < fc.size()) {
                Mp4BoxHeader boxHeader = new Mp4BoxHeader();
                headerBuffer.clear();
                fc.read(headerBuffer);
                headerBuffer.rewind();


                try {
                    boxHeader.update(headerBuffer);
                } catch (NullBoxIdException ne) {
                    //If we only get this error after all the expected data has been found we allow it
                    if (moovNode != null & mdatNode != null) {
                        NullPadding np = new NullPadding(fc.position() - Mp4BoxHeader.HEADER_LENGTH, fc.size());
                        DefaultMutableTreeNode trailingPaddingNode = new DefaultMutableTreeNode(np);
                        rootNode.add(trailingPaddingNode);
                        //logger.warning(ErrorMessage.NULL_PADDING_FOUND_AT_END_OF_MP4.getMsg(np.getFilePos()));
                        break;
                    } else {
                        //File appears invalid
                        throw ne;
                    }
                }


                boxHeader.setFilePos(fc.position() - Mp4BoxHeader.HEADER_LENGTH);
                DefaultMutableTreeNode newAtom = new DefaultMutableTreeNode(boxHeader);


                //Go down moov
                if (boxHeader.getId().equals(Mp4NotMetaFieldKey.MOOV.getFieldName())) {
                    moovNode = newAtom;
                    moovHeader = boxHeader;

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     * Display atom tree
     */
    @SuppressWarnings("unchecked")
    public void printAtomTree() {
        Enumeration<DefaultMutableTreeNode> e = rootNode.preorderEnumeration();
        DefaultMutableTreeNode nextNode;
        while (e.hasMoreElements()) {
            nextNode = e.nextElement();
            Mp4BoxHeader header = (Mp4BoxHeader) nextNode.getUserObject();
            if (header != null) {
                String tabbing = "";
                for (int i = 1; i < nextNode.getLevel(); i++) {
                    tabbing += "\t";
                }


                if (header instanceof NullPadding) {
                    System.out.println(tabbing + "Null pad " + " @ " + header.getFilePos() + " of size:" + header.getLength() + " ,ends @ " + (header.getFilePos() + header.getLength()));

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        while (moovBuffer.position() < ((startPos + parentBoxHeader.getDataLength()) - Mp4BoxHeader.HEADER_LENGTH)) {
            boxHeader = new Mp4BoxHeader(moovBuffer);
            if (boxHeader != null) {
                boxHeader.setFilePos(moovHeader.getFilePos() + moovBuffer.position());//logger.finest("Atom " + boxHeader.getId() + " @ " + boxHeader.getFilePos() + " of size:" + boxHeader.getLength() + " ,ends @ " + (boxHeader.getFilePos() + boxHeader.getLength()));


                DefaultMutableTreeNode newAtom = new DefaultMutableTreeNode(boxHeader);
                parentNode.add(newAtom);


                if (boxHeader.getId().equals(Mp4NotMetaFieldKey.UDTA.getFieldName())) {
                    udtaNode = newAtom;
                }
                //only interested in metaNode that is child of udta node
                else if (boxHeader.getId().equals(Mp4NotMetaFieldKey.META.getFieldName()) && parentBoxHeader.getId().equals(Mp4NotMetaFieldKey.UDTA.getFieldName())) {
                    metaNode = newAtom;
                } else if (boxHeader.getId().equals(Mp4NotMetaFieldKey.HDLR.getFieldName()) && parentBoxHeader.getId().equals(Mp4NotMetaFieldKey.META.getFieldName())) {
                    hdlrWithinMetaNode = newAtom;
                } else if (boxHeader.getId().equals(Mp4NotMetaFieldKey.HDLR.getFieldName())) {
                    hdlrWithinMdiaNode = newAtom;
                } else if (boxHeader.getId().equals(Mp4NotMetaFieldKey.TAGS.getFieldName())) {
                    tagsNode = newAtom;
                } else if (boxHeader.getId().equals(Mp4NotMetaFieldKey.STCO.getFieldName())) {
                    if (stco == null) {
                        stco = new Mp4StcoBox(boxHeader, moovBuffer);
                        stcoNode = newAtom;
                    }
                } else if (boxHeader.getId().equals(Mp4NotMetaFieldKey.ILST.getFieldName())) {
                    DefaultMutableTreeNode parent = (DefaultMutableTreeNode) parentNode.getParent();
                    if (parent != null) {
                        Mp4BoxHeader parentsParent = (Mp4BoxHeader) (parent).getUserObject();
                        if (parentsParent != null) {
                            if (parentBoxHeader.getId().equals(Mp4NotMetaFieldKey.META.getFieldName()) && parentsParent.getId().equals(Mp4NotMetaFieldKey.UDTA.getFieldName())) {
                                ilstNode = newAtom;

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