Печать страницы - qt3x: QTableItem+Validator

Здраствуйте, буду краток.
Требуется поставить валидатор на combo который в QTable'e.
Есть класс, но я не понял как его использовать, приведите пример пожайлусто.

Спасибо.

Код:

////.h
#ifndef VALIDATORTABLEITEM_H
#define VALIDATORTABLEITEM_H

#include <qtable.h>
#include <qvalidator.h>

class ValidatorTableItem : public QTableItem
{
public:
	ValidatorTableItem(QTable * table, EditType et, const QString & text, QRegExpValidator * V = 0);
	ValidatorTableItem(QTable * table, EditType et, const QString & text, const QPixmap & p, QRegExpValidator * = 0);
	virtual QWidget * createEditor() const;
	QRegExpValidator * Valdtr;
    // We allow the direct, public manipulation of Valdtr to keep the object as small as possible rather than adding the size of a setValidator function
};


#endif


//////////////////////////////////////////
//cpp
#include "validatortableitem.h"
#include <qlineedit.h>

ValidatorTableItem::ValidatorTableItem(QTable * table, EditType et, const QString & text, QRegExpValidator * V) : QTableItem(table, et, text)
{
	Valdtr = V;
	setReplaceable(false);
	if ( Valdtr && (! text.isEmpty()) && text.find(Valdtr->regExp()) == -1 ) { // i.e., we have not passed valid text in the constructor
		setText("");
	}
}

ValidatorTableItem::ValidatorTableItem(QTable * table, EditType et, const QString & text, const QPixmap & p, QRegExpValidator * V) : QTableItem(table, et, text, p)
{
	Valdtr = V;
	setReplaceable(false);
	if ( Valdtr && (! text.isEmpty()) && text.find(Valdtr->regExp()) == -1 ) { // i.e., we have not passed valid text in the constructor
		setText("");
	}
}

QWidget * ValidatorTableItem::createEditor() const
{
    QLineEdit *e = new QLineEdit( table()->viewport(), "qt_tableeditor" );
	e->setFrame( FALSE );
	if ( Valdtr ) {
		e->setValidator(Valdtr);		
	}
    e->setText( text() );
    return e;
}

/////////////////
Примерно такой у меня будет мейн.
//main
#include <qapplication.h>
#include <form4.h>
#include <stdio.h>
#include <qpushbutton.h>
#include <qvalidator.h>
#include <qlineedit.h>
#include <qstring.h>
#include <qtable.h>
#include <qlabel.h>
#include <validatortableitem.h>

int main( int argc, char ** argv )
{
    QApplication a( argc, argv );
    Form4 *w = new Form4();
    w->show();
    a.connect( &a, SIGNAL( lastWindowClosed() ),&a, SLOT( quit() ));
    a.connect( w->quit, SIGNAL(clicked()),&a, SLOT(      quit() ) );
    a.connect( w->push, SIGNAL(clicked()), w, SLOT(slot_simplex()));
    QDoubleValidator * val = new QDoubleValidator( w );
    w->te->setValidator(val);
    w->tbl->horizontalHeader()->setLabel(0, "Name");

QString string0;
QRegExp rx( "-?\\d{1,3}" );
QRegExpValidator *vldtr= new QRegExpValidator( rx, w );
////ValidatorTableItem *vti;
////w->tbl->setItem( 2, 2, ValidatorTableItem::QTableItem(w->tbl,QTableItem::Always,string0,vldtr));

w->tbl->setItem(1 , 1,new QTableItem( w->tbl, QTableItem::WhenCurrent, QString::number( 1 * 1 ) ) );

    return a.exec();
} 

[size=9px][color=#999999]добавлено спустя 1 минуту:[/color][/size]

 /* validatortableitem.h defines a QTableItem which allows a QRegExpValidator to be set  */

/* Copyright (C) 2003  John A. Sullivan III
   
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.

This program 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 General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

e-mail: john.sullivan@nexusmgmt.com
*/

/* Revision 0 - December 31, 2003 - John Sullivan */

Я написал вот такой класс специально под твой вопрос:
Заголовочный файл TValidatorTableItem.h:

Код:


#ifndef __TVALIDATORTABLEITEM_H__INCL
#define __TVALIDATORTABLEITEM_H__INCL

#include <qtable.h> 

class QValidator;
class QLineEdit;

class TValidatorTableItem : public QTableItem 
{ 
public: 
    TValidatorTableItem(QTable* table, EditType et );
	TValidatorTableItem(QTable* table, EditType et, QValidator* pValidator);
	TValidatorTableItem(QTable* table, EditType et, const QString& text );
	TValidatorTableItem(QTable* table, EditType et, const QString& text, QValidator* pValidator);
	virtual ~TValidatorTableItem();

	virtual QWidget * createEditor() const; 
	QValidator* validator()const { return m_pValidator; };
	void setValidator(QValidator* pValidator);


private:
	QValidator* m_pValidator;
	QLineEdit* m_pEdit;
}; 


#endif

Файл реализации TValidatorTableItem.cpp:

Код:


#include <qvalidator.h>
#include <qlineedit.h> 


#include "TValidatorTableItem.h" 


TValidatorTableItem::TValidatorTableItem(QTable* table, EditType et)
: QTableItem(table, et), m_pValidator(NULL), m_pEdit(NULL)
{
}

TValidatorTableItem::TValidatorTableItem(QTable* table, EditType et, QValidator* pValidator)
: QTableItem(table, et), m_pValidator(NULL), m_pEdit(NULL)
{
	setValidator(pValidator);
}

TValidatorTableItem::TValidatorTableItem(QTable* table, EditType et, const QString& text)
: QTableItem(table, et, text), m_pValidator(NULL), m_pEdit(NULL)
{
}

TValidatorTableItem::TValidatorTableItem(QTable* table, EditType et, const QString& text, QValidator* pValidator)
: QTableItem(table, et, text), m_pValidator(NULL), m_pEdit(NULL)
{
	setValidator(pValidator);
}

void TValidatorTableItem::setValidator(QValidator* pValidator)
{
    if (NULL != m_pValidator) delete m_pValidator;
    m_pValidator = pValidator;
	if (NULL != m_pEdit) m_pEdit->setValidator(m_pValidator);
	QString content = text();
	if (NULL != m_pValidator)
	{
		int iPos = 0;
		if (QValidator::Invalid == m_pValidator->validate(content, iPos)) setText("");
		
	}
}

QWidget* TValidatorTableItem::createEditor() const
{
	TValidatorTableItem* pItem = const_cast<TValidatorTableItem*>(this);
	pItem->m_pEdit = dynamic_cast<QLineEdit*>(QTableItem::createEditor());
	if (NULL != m_pEdit)
	{
		if (NULL != m_pValidator) m_pEdit->setValidator(m_pValidator);
	}
	return m_pEdit;
}


TValidatorTableItem::~TValidatorTableItem()
{
	setValidator(NULL);
}

Пример использования main.cpp:

Код:


#include <qapplication.h>
#include <qvalidator.h>
#include "TValidatorTableItem.h"

int main(int argc, char* argv[])
{
	QApplication app(argc, argv, true);

	QTable myTable;
	myTable.show();
	myTable.setNumCols(4);
	myTable.setNumRows(16);

	//==============Variant number 1=================
	//TValidatorTableItem* pItem = new TValidatorTableItem(&myTable, QTableItem::Always);
	//pItem->setValidator(new QIntValidator(1, 100, NULL));

	//==============Variant number 2=================
	//myTable.setItem(1, 1, new TValidatorTableItem(&myTable, QTableItem::Always, new QIntValidator(1, 100, NULL)));


	//==============Variant number 3=================
	TValidatorTableItem* pItem = new TValidatorTableItem(&myTable, QTableItem::Always, new QIntValidator(1, 100, NULL));
	myTable.setItem(1, 1, pItem);

	app.connect(&app, SIGNAL(lastWindowClosed()), &app, SLOT(quit()));
	return app.exec();
}

Russian Qt Forum

Qt => Пользовательский интерфейс (GUI) => Тема начата: russ от Декабрь 16, 2006, 21:04