annotate sv/document/ESFileReader.h @ 203:74d1b3bda5a3

allow to save and restore the filter settings from an easaier session

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*	Sound Access	
		EASAIER client application.	
		Silogic 2007. Laure Bajard. 
	
	This program is free software; you can redistribute it and/or    
	modify it under the terms of the GNU General Public License as    
	published by the Free Software Foundation; either version 2 of the    
	License, or (at your option) any later version.  See the file    
	COPYING included with this distribution for more information.
*/

#ifndef _ES_FILE_READER_H_
#define _ES_FILE_READER_H_

#include "layer/LayerFactory.h"
#include "transform/Transform.h"
#include "data/model/AudioSourceInfoModel.h"
#include "data/fileio/HttpClient.h"

#include <QXmlDefaultHandler>

#include <map>

class Pane;
class Model;
class Document;
class PlayParameters;

class ESFileReaderPaneCallback
{
public:
	virtual ~ESFileReaderPaneCallback(){}
    virtual Pane *addPane() = 0;
    virtual void setWindowSize(int width, int height) = 0;
    virtual void addSelection(int start, int end) = 0;
};

class ESFileReader : public QXmlDefaultHandler
{
public:
    ESFileReader(Document *document,
		 ESFileReaderPaneCallback &callback);
    virtual ~ESFileReader();

    void parse(const QString &xmlData);
    void parse(QXmlInputSource &source);

    bool isOK();
    QString getErrorString() const { return m_errorString; }

    // For loading a single layer onto an existing pane
    void setCurrentPane(Pane *pane) { m_currentPane = pane; }
    
    virtual bool startElement(const QString &namespaceURI,
			      const QString &localName,
			      const QString &qName,
			      const QXmlAttributes& atts);

    virtual bool characters(const QString &);

    virtual bool endElement(const QString &namespaceURI,
			    const QString &localName,
			    const QString &qName);

    bool error(const QXmlParseException &exception);
    bool fatalError(const QXmlParseException &exception);

protected:
    bool readWindow(const QXmlAttributes &);
    bool readView(const QXmlAttributes &);
    bool readLayer(const QXmlAttributes &);
	bool readFilter(const QXmlAttributes &);

    Document *m_document;
    ESFileReaderPaneCallback &m_paneCallback;
    Pane *m_currentPane;
    std::map<int, Layer *> m_layers;
    
	bool m_inView;
    bool m_inData;

	QString m_errorString;
    bool m_ok;
	
};



#endif