QLLineEditFilter.cpp

/*
 * Copyright 2011 TeleMidia/PUC-Rio.
 * 
 * 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, see
 * <http://www.gnu.org/licenses/>. 
 */
#include "QLineEditFilter.h"

QLineEditFilter::QLineEditFilter(QWidget *parent) : QLineEdit(parent)
{
    setStyleSheet("color: #bbbbbb;");
    setText(tr("Filter..."));
    isFilterText = true;

    connect(this, SIGNAL(textEdited(QString)),
            this, SLOT(userTextEdited(QString)));
}

QLineEditFilter::~QLineEditFilter()
{

}

void QLineEditFilter::focusInEvent(QFocusEvent *focusEvent)
{
    if(isFilterText)
    {
        setText("");
        setStyleSheet("color: #000000;");
        isFilterText = false;
    }
    QLineEdit::focusInEvent(focusEvent);
}

void QLineEditFilter::focusOutEvent(QFocusEvent *focusEvent)
{
    if(text() == "") {
        isFilterText = true;
        setStyleSheet("color: #bbbbbb;");
        setText(tr("Filter..."));
    }
    QLineEdit::focusOutEvent(focusEvent);
}

void QLineEditFilter::userTextEdited(const QString &text)
{
    if(!isFilterText)
        emit filterTextChanged(text);
    else
        emit filterTextChanged(QString (""));
}