/****************************************************************************

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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

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** This file is part of the test suite of the Qt Toolkit.

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** No Commercial Usage

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** contained in the Technology Preview License Agreement accompanying

** this package.

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** General Public License version 2.1 as published by the Free Software

** Foundation and appearing in the file LICENSE.LGPL included in the

** packaging of this file.  Please review the following information to

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****************************************************************************/

#ifndef PatternistSDK_ErrorHandler_H

#define PatternistSDK_ErrorHandler_H

#include "Global.h"

#include "qabstractmessagehandler.h"

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

template<typename T> class QList;

namespace QPatternistSDK

{

    /**

     * @short A MessageHandler which

     * accumulates all its received ErrorHandler::Message instances

     * in a list, retrievable via messages().

     *

     * Thus, ErrorHandler does not report errors, but collects them

     * and allows easy access to them.

     *

     * @ingroup PatternistSDK

     * @author Frans Englich <frans.englich@nokia.com>

     */

    class Q_PATTERNISTSDK_EXPORT ErrorHandler : public QAbstractMessageHandler

    {

    public:

        class Message

        {

        public:

            typedef QList<Message> List;

            QString description() const

            {

                return m_description;

            }

            void setDescription(const QString &desc)

            {

                m_description = desc;

            }

            void setIdentifier(const QUrl &newId)

            {

                m_identifier = newId;

            }

            QUrl identifier() const

            {

                return m_identifier;

            }

            QtMsgType type() const

            {

                return m_type;

            }

            void setType(const QtMsgType t)

            {

                m_type = t;

            }

        private:

            QUrl        m_identifier;

            QtMsgType   m_type;

            QString     m_description;

        };

        /**

         * Clears all accumulated errors.

         */

        void reset();

        Message::List messages() const;

        /**

         * Calling this function causes all Qt's internal debug messages to be

         * sent to @p handler. If @p handler is @c null, Qt's default message

         * handler is re-installed. In other words, via an internal proxy function,

         * it installs @p handler as Qt's message handler.

         *

         * If @p handler is heap allocated, it will be leaked.

         *

         * @see qInstallMsgHandler()

         */

        static void installQtMessageHandler(ErrorHandler *const handler);

        static ErrorHandler *handler;

    protected:

        virtual void handleMessage(QtMsgType type,

                                   const QString &description,

                                   const QUrl &identifier = QUrl(),

                                   const QSourceLocation &sourceLocation = QSourceLocation());

    private:

        ErrorHandler::Message::List m_messages;

    };

}

QT_END_NAMESPACE

QT_END_HEADER

#endif

// vim: et:ts=4:sw=4:sts=4