i_qtextedit.h

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#ifndef i_qtextedit_h
#define i_qtextedit_h

/*+
________________________________________________________________________

 (C) dGB Beheer B.V.; (LICENSE) http://opendtect.org/OpendTect_license.txt
 Author:        Nanne Hemstra
 Date:          September 2007
________________________________________________________________________

-*/

#include "uitextedit.h"

#include <QAbstractSlider>
#include <QTextEdit>
#include <QTextBrowser>



QT_BEGIN_NAMESPACE

class QString;

class i_TextEditMessenger : public QObject
{
    Q_OBJECT
    friend class        uiTextEditBody;

protected:

i_TextEditMessenger( QTextEdit* sndr, uiTextEditBase* receiver )
    : sender_(sndr)
    , receiver_(receiver)
{
    connect( sndr, SIGNAL(textChanged()), this, SLOT(textChanged()) );
    connect( sndr, SIGNAL(copyAvailable(bool)),this,SLOT(copyAvailable(bool)));
}

private:

    uiTextEditBase* receiver_;
    QTextEdit*  sender_;

private slots:

void textChanged()
{ receiver_->textChanged.trigger( *receiver_ ); }

void copyAvailable( bool yn )
{ receiver_->copyAvailable.trigger( yn ); }

};

class i_ScrollBarMessenger : public QObject
{
    Q_OBJECT;
public:

    i_ScrollBarMessenger( QAbstractSlider* sndr, uiTextEditBase* receiver )
        : sender_(sndr)
        , receiver_(receiver)
    {
        connect( sndr, SIGNAL(sliderPressed()), this, SLOT(sliderPressed()) );
        connect( sndr, SIGNAL(sliderReleased()), this, SLOT(sliderReleased()) );
    }

private:

    uiTextEditBase*     receiver_;
    QAbstractSlider*    sender_;

private slots:

    void sliderPressed()
    {
        receiver_->sliderPressed.trigger( *receiver_ );
    }

    void sliderReleased()
    {
        receiver_->sliderReleased.trigger( *receiver_ );
    }

};



class i_BrowserMessenger : public i_TextEditMessenger
{
    Q_OBJECT
    friend class        uiTextBrowserBody;

protected:
                        i_BrowserMessenger( QTextBrowser* sndr,
                                            uiTextBrowser* receiver )
                            : i_TextEditMessenger(sndr,receiver)
                            , bsender_( sndr )
                            , breceiver_( receiver )
                        {
                            connect( sndr, SIGNAL(backwardAvailable(bool)),
                                     this,   SLOT(backwardAvailable(bool)) );
                            connect(sndr,SIGNAL(forwardAvailable(bool)),
                                     this, SLOT(forwardAvailable(bool)));
                            connect(sndr,SIGNAL(highlighted(const QString&)),
                                     this, SLOT(highlighted(const QString&)));
                            connect(sndr,SIGNAL(anchorClicked(const QUrl&)),
                                    this,SLOT(anchorClicked(const QUrl&)));
                        }

    virtual             ~i_BrowserMessenger() {}

private:

    uiTextBrowser*      breceiver_;
    QTextBrowser*       bsender_;

private slots:

    void        backwardAvailable( bool yn )
                {
                    breceiver_->cangobackw_ = yn;
                    breceiver_->goneForwardOrBack.trigger( *breceiver_ );
                }

    void        forwardAvailable( bool yn )
                {
                    breceiver_->cangoforw_ = yn;
                    breceiver_->goneForwardOrBack.trigger( *breceiver_ );
                }

    void        highlighted( const QString& lnk )
                {
                    breceiver_->lastlink_ = lnk.toLatin1().data();
                    breceiver_->linkHighlighted.trigger( *breceiver_ );
                }

    void        anchorClicked( const QUrl& lnk )
                {
                    breceiver_->lastlink_ = lnk.toString().toLatin1().data();
                    breceiver_->linkClicked.trigger( *breceiver_ );
                }
};

QT_END_NAMESPACE

#endif