/*
 * Copyright 2006 Sony Computer Entertainment Inc.
 *
 * Licensed under the SCEA Shared Source License, Version 1.0 (the "License"); you may not use this 
 * file except in compliance with the License. You may obtain a copy of the License at:
 * http://research.scea.com/scea_shared_source_license.html
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License 
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or 
 * implied. See the License for the specific language governing permissions and limitations under the 
 * License. 
 */

#ifndef __DAE_DOCUMENT__
#define __DAE_DOCUMENT__

#include <dae/daeTypes.h>
#include <dae/daeElement.h>
#include <dae/daeURI.h>
#include <dae/daeStringRef.h>

class DAE;
class daeDatabase;

/**
 * The @c daeDocument class implements a COLLADA runtime database entry.
 */
class DLLSPEC daeDocument
{
public:
	/**
	 * Constructor
	 * @param dae The dae that owns this document. 
	 */
	daeDocument(DAE& dae);

	/**
	 * Destructor
	 */
	~daeDocument();

	/**
	* Accessor to get the @c domCollada associated with this document.
	* @return A @c daeElementRef for the @c domCollada that is the root of this document.
	* @note This function should really return a domColladaRef,
	* but we're trying to avoid having @c dae classes depend on generated dom classes.
	*/
	daeElement* getDomRoot() const {return(dom);}
	/**
	* Accessor to set the domCollada associated with this document
	* @param domRoot the domCollada that is the root of this document
	* @remarks Should really require a domColladaRef but we're trying to avoid having dae classes depend on generated dom classes.
	*/
	void setDomRoot(daeElement* domRoot) {dom = domRoot; domRoot->setDocument(this); }
	/**
	* Accessor to get the URI associated with the document in this document; 
	* this is currently set to the URI from which the document was loaded, but
	* is blank if the document was created with @c insertDocument().
	* @return Returns a pointer to the URI for this document.
	* @note This is the full URI of the document and not the document base URI.
	*/
	daeURI* getDocumentURI() {return (&uri);}

	/**
	* Const accessor to get the URI associated with the document in this collection; 
	* this is currently set to the URI from which the collection was loaded, but
	* is blank if the collection was created with @c insertCollection().
	* @return Returns a pointer to the URI for this collection.
	* @note This is the full URI of the document and not the document base URI.
	*/
	const daeURI* getDocumentURI() const {return (&uri);}

	/**
	 * Accessor to get the DAE that owns this document.
	 * @return Returns the DAE that owns this document.
	 */
	DAE* getDAE();

	/**
	 * Accessor to get the database associated with this document.
	 * @return Returns the database associated with this document.
	 */
	daeDatabase* getDatabase();

	/**
	 * This function is used to track how a document gets modified. It gets called internally.
	 * @param element The element that was added to this document.
	 * @note This function is called internally and not meant to be called by the client application.
	 * Calling this function from the client application may result in unexpected behavior.
	 */
	void insertElement( daeElementRef element );
	/**
	 * This function is used to track how a document gets modified. It gets called internally.
	 * @param element The element that was removed from this document.
	 * @note This function is called internally and not meant to be called by the client application.
	 * Calling this function from the client application may result in unexpected behavior.
	 */
	void removeElement( daeElementRef element );
	/**
	 * This function is used to track how a document gets modified. It gets called internally.
	 * @param element The element whose ID is about to be changed.
	 * @param newID The ID that is going to be assigned to the element.
	 * @note This function is called internally and not meant to be called by the client application.
	 * Calling this function from the client application may result in unexpected behavior.
	 */
	void changeElementID( daeElementRef element, daeString newID );
	/**
	 * This function is just like changeElementID, except it keeps track of sids instead of IDs.
	 * @param element The element whose sid is about to be changed.
	 * @param newSID The sid that is going to be assigned to the element.
	 * @note This function is called internally and not meant to be called by the client application.
	 * Calling this function from the client application may result in unexpected behavior.
	 */
	void changeElementSID( daeElementRef element, daeString newSID );
	/**
	 * Adds a URI to the list of external references in this document.
	 * @param uri The URI that is the external reference.
	 * @note This function gets called internally from daeURI upon trying to resolve an element.
	 * Calling this function in your client code my result in unexpected behavior.
	 */
	void addExternalReference( daeURI &uri );
   /**
	 * Gets a list of all the documents that are referenced from URI contained within this document.
	 * @return Returns a list of URI strings, each being a URI which is referenced from within this document.
	 */
	const daeStringRefArray &getReferencedDocuments() const { return referencedDocuments; }

private:
	/**
	 * The DAE that owns this document. The DAE's database is notified by the document when
	 * elements are inserted, removed, or have their ID changed.
	 */
	DAE* dae;

	/**
	 * Top Level element for of the document, always a domCollada
	 * @remarks This member will eventually be taken private, use getDomRoot() to access it.
	 */
	daeElementRef dom;
	
	/** 
	 * The URI of the document, may be blank if the document wasn't loaded from a URI
	 * @remarks This member will eventually be taken private, use getDocumentURI() to access it.
	 */
	daeURI uri;

   daeStringRefArray referencedDocuments;
};

typedef daeDocument daeCollection;

#endif