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/**
* backgroundchecker.h
*
* Copyright (C) 2004 Zack Rusin <zack@kde.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#ifndef KSPELL_BACKGROUNDCHECKER_H
#define KSPELL_BACKGROUNDCHECKER_H
#include "broker.h"
class QCustomEvent;
namespace KSpell2
{
class Filter;
/**
*
* BackgroundChecker is used to perform spell checking without
* blocking the application. You can use it as is by calling
* the checkText function or subclass it and reimplement
* getMoreText function.
*
* The misspelling signal is emitted whenever a mispelled word
* is found. The background checker stops right before emitting
* the signal. So the parent has to call continueChecking function
* to resume the checking.
*
* done signal is emitted when whole text is spell checked.
*
* @author Zack Rusin <zack@kde.org>
* @short class used for spell checking in the background
*/
class KDE_EXPORT BackgroundChecker : public QObject
{
Q_OBJECT
public:
BackgroundChecker( const Broker::Ptr& broker, QObject *parent =0,
const char *name =0 );
~BackgroundChecker();
/**
* This method is used to spell check static text.
* It automatically invokes start().
*
* Use getMoreText() with start() to spell check a stream.
*/
void checkText( const QString& );
Filter *filter() const;
Broker *broker() const;
void changeLanguage( const QString& lang );
bool checkWord( const QString& word );
QStringList suggest( const QString& ) const;
bool addWord( const QString& word );
public slots:
virtual void setFilter( KSpell2::Filter *filter );
virtual void start();
virtual void stop();
/**
* After emitting misspelling signal the background
* checker stops. The catcher is responsible for calling
* continueChecking function to resume checking.
*/
virtual void continueChecking();
signals:
/**
* Emitted whenever a misspelled word is found
*/
void misspelling( const QString& word, int start );
/**
* Emitted after the whole text has been spell checked.
*/
void done();
protected:
/**
* This function is called to get the text to spell check.
* It will be called continuesly until it returns QString::null
* in which case the done() singnal is emitted.
* Note: the start parameter in mispelling() is not a combined
* position but a position in the last string returned
* by getMoreText. You need to store the state in the derivatives.
*/
virtual QString getMoreText();
/**
* This function will be called whenever the background checker
* will be finished text which it got from getMoreText.
*/
virtual void finishedCurrentFeed();
protected slots:
void slotEngineDone();
protected:
//void customEvent( QCustomEvent *event );
private:
class Private;
Private *d;
};
}
#endif
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