i_qtable.h

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#ifndef i_qtable_h
#define i_qtable_h

/*+
________________________________________________________________________

 (C) dGB Beheer B.V.; (LICENSE) http://opendtect.org/OpendTect_license.txt
 Author:        Nanne Hemstra
 Date:          January 2008
 RCS:           $Id$
________________________________________________________________________

-*/

#include "uitable.h"

#include <QHeaderView>
#include <QObject>
#include <QTableWidget>
#include <QTableWidgetItem>
#include <QWidget>



QT_BEGIN_NAMESPACE

class i_tableMessenger : public QObject
{
    Q_OBJECT
    friend class        uiTableBody;

protected:
i_tableMessenger( QTableWidget*  sndr, uiTable* receiver )
    : sender_(sndr)
    , receiver_(receiver)
    , lastpressedheaderidx_(-1)
{
    connect( sndr, SIGNAL(cellChanged(int,int)),
             this, SLOT(valueChanged(int,int)) );

    connect( sndr, SIGNAL(cellClicked(int,int)),
             this, SLOT(clicked(int,int)) );

    connect( sndr, SIGNAL(cellPressed(int,int)),
             this, SLOT(cellPressed(int,int)) );

    connect( sndr, SIGNAL(cellDoubleClicked(int,int)),
             this, SLOT(doubleClicked(int,int)) );

    connect( sndr, SIGNAL(itemSelectionChanged()),
             this, SLOT(itemSelectionChanged()) );

    connect( sndr, SIGNAL(cellEntered(int,int)),
             this, SLOT(cellEntered(int,int)) );

    connect( sndr->verticalHeader(), SIGNAL(sectionClicked(int)),
             this, SLOT(rowClicked(int)) );
    connect( sndr->horizontalHeader(), SIGNAL(sectionClicked(int)),
             this, SLOT(columnClicked(int)) );

    connect( sndr->verticalHeader(), SIGNAL(sectionPressed(int)),
             this, SLOT(rowPressed(int)) );
    connect( sndr->horizontalHeader(), SIGNAL(sectionPressed(int)),
             this, SLOT(columnPressed(int)) );

    connect( sndr->verticalHeader(), SIGNAL(sectionDoubleClicked(int)),
             this, SLOT(rowDoubleClicked(int)) );
    connect( sndr->horizontalHeader(), SIGNAL(sectionDoubleClicked(int)),
             this, SLOT(columnDoubleClicked(int)) );
}

    virtual             ~i_tableMessenger() {}

private:

    uiTable*            receiver_;
    QTableWidget*       sender_;
    int                 lastpressedheaderidx_;

private slots:

#define mTriggerBody( notifier, row, col, triggerstatement ) \
{ \
    BufferString msg = #notifier; \
    msg += " "; msg += row;  \
    msg += " "; msg += col; \
    const int refnr = receiver_->beginCmdRecEvent( msg ); \
    triggerstatement; \
    receiver_->endCmdRecEvent( refnr, msg ); \
}

#define mNoTrigger( notifier, row, col ) \
    mTriggerBody( notifier, row, col, )

#define mTrigger( notifier, row, col ) \
    mTriggerBody( notifier, row, col, receiver_->notifier.trigger(*receiver_) )

#define mHeaderTriggerBody( notifier, idx, vertical, triggerstatement ) \
    mTriggerBody( notifier, (vertical ? idx : -1), (vertical ? -1 : idx), \
                  triggerstatement )

#define mNoHeaderTrigger( notifier, idx, vertical ) \
    mHeaderTriggerBody( notifier, idx, vertical, )

#define mHeaderTrigger( notifier, idx, vertical ) \
    mHeaderTriggerBody( notifier, idx, vertical, \
                        receiver_->notifier.trigger(idx, *receiver_ ) )


void valueChanged( int row, int col )
{
    receiver_->notifcell_ = RowCol(row,col);
    mTrigger( valueChanged, row, col );
}


void clicked( int row, int col )
{
    receiver_->notifcell_ = RowCol(row,col);
    if ( receiver_->buttonstate_ == OD::RightButton )
        mTrigger( rightClicked, row, col )
    else if ( receiver_->buttonstate_ == OD::LeftButton )
        mTrigger( leftClicked, row, col );
}


void doubleClicked( int row, int col )
{
    receiver_->notifcell_ = RowCol(row,col);
    mTrigger( doubleClicked, row, col );
}


void itemSelectionChanged()
{ mTrigger( selectionChanged, -1, -1 ); }


void cellPressed( int row, int col )
{
    receiver_->notifcell_ = RowCol(row,col);
    mNoTrigger( cellPressed, row, col );
}


void cellEntered( int row, int col )
{ mNoTrigger( cellEntered, row, col ); }


void rowClicked( int idx )
{
    // Trigger is conditional to repair Qt inconsistency. Unlike tables and
    // and lists, the header signals a final click after mouse dragging.
    if ( idx == lastpressedheaderidx_ )
        mHeaderTrigger( rowClicked, idx, true );
}


void columnClicked( int idx )
{
    // Trigger is conditional to repair Qt inconsistency. Unlike tables and
    // and lists, the header signals a final click after mouse dragging.
    if ( idx == lastpressedheaderidx_ )
        mHeaderTrigger( columnClicked, idx, false );
}


void rowPressed( int idx )
{
    lastpressedheaderidx_ = idx;
    mNoHeaderTrigger( rowPressed, idx, true );
}


void columnPressed( int idx )
{
    lastpressedheaderidx_ = idx;
    mNoHeaderTrigger( columnPressed, idx, false );
}


void rowDoubleClicked( int idx )
{ mNoHeaderTrigger( rowDoubleClicked, idx, true ); }


void columnDoubleClicked( int idx )
{ mNoHeaderTrigger( columnDoubleClicked, idx, false ); }

#undef mNoTrigger
#undef mTrigger
#undef mTriggerBody
#undef mHeaderTriggerBody
#undef mNoHeaderTrigger
#undef mHeaderTrigger

};

QT_END_NAMESPACE

#endif