/***************************************************************************
 *   Copyright (C) 2005/06 by the Quassel Project                          *
 *   devel@quassel-irc.org                                                 *
 *                                                                         *
 *   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) version 3.                                           *
 *                                                                         *
 *   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.             *
 ***************************************************************************/

#include "clearablelineedit.h"

#include <QToolButton>
#include <QStyle>

ClearableLineEdit::ClearableLineEdit(QWidget *parent)
  : QLineEdit(parent)
{
  clearButton = new QToolButton(this);
  clearButton->setIcon(QIcon(":/22x22/actions/oxygen/22x22/actions/edit-clear-locationbar-rtl.png"));
#ifndef Q_WS_QWS
  clearButton->setCursor(Qt::ArrowCursor);
#endif
  clearButton->setStyleSheet("QToolButton { border: none; padding: 0px; }");
  clearButton->hide();
  
  connect(clearButton, SIGNAL(clicked()), this, SLOT(clear()));
  connect(this, SIGNAL(textChanged(const QString&)), this, SLOT(updateClearButton(const QString&)));
  
  int frameWidth = style()->pixelMetric(QStyle::PM_DefaultFrameWidth);
  setStyleSheet(QString("QLineEdit { padding-right: %1px; } ").arg(clearButton->sizeHint().width() + frameWidth + 1));
  QSize msz = minimumSizeHint();
  setMinimumSize(qMax(msz.width(), clearButton->sizeHint().height() + frameWidth * 2 + 2),
		 qMax(msz.height(), clearButton->sizeHint().height() + frameWidth * 2 + 2));
}

void ClearableLineEdit::resizeEvent(QResizeEvent *) {
  QSize size = clearButton->sizeHint();
  int frameWidth = style()->pixelMetric(QStyle::PM_DefaultFrameWidth);
  clearButton->move(rect().right() - frameWidth - size.width(),
		    (rect().bottom() + 1 - size.height())/2);
}

void ClearableLineEdit::updateClearButton(const QString& text) {
  clearButton->setVisible(!text.isEmpty());
}
