//##################################################################################################
//
//   Custom Visualization Core library
//   Copyright (C) 2011-2012 Ceetron AS
//    
//   This library 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 3 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 General Public License at <<http://www.gnu.org/licenses/gpl.html>> 
//   for more details. 
//
//##################################################################################################

#include "cafMessagePanel.h"

#include <QtGui/QWidget>
#include <QtGui/QDockWidget>
#include <QtGui/QTextEdit>
#include <QtGui/QBoxLayout>

namespace caf {


MessagePanel* MessagePanel::sm_messagePanelInstance = NULL;

//==================================================================================================
///
/// \class MessagePanel
///
/// 
///
//==================================================================================================

//--------------------------------------------------------------------------------------------------
/// 
//--------------------------------------------------------------------------------------------------
MessagePanel::MessagePanel(QDockWidget* parent)
:   QWidget(parent)
{
	m_textEdit = new QTextEdit(this);
	m_textEdit->setReadOnly(true);
	m_textEdit->setLineWrapMode(QTextEdit::NoWrap);

	QVBoxLayout* layout = new QVBoxLayout();
	layout->addWidget(m_textEdit);
	setLayout(layout);

    sm_messagePanelInstance = this;
}


//--------------------------------------------------------------------------------------------------
/// 
//--------------------------------------------------------------------------------------------------
void MessagePanel::showInfo(QString info)
{
	convertStringToHTML(&info);

	QString str = "<font color='green'>";
	str += info;
	str += "</font>";

	m_textEdit->append(str);
}


//--------------------------------------------------------------------------------------------------
/// 
//--------------------------------------------------------------------------------------------------
void MessagePanel::showWarning(QString warn)
{
	convertStringToHTML(&warn);

	QString str = "<font color='maroon'>";
	str += warn;
	str += "</font>";
	
	m_textEdit->append(str);
}


//--------------------------------------------------------------------------------------------------
/// 
//--------------------------------------------------------------------------------------------------
void MessagePanel::showError(QString error)
{
	convertStringToHTML(&error);

	QString str = "<b><font color='red'>";
	str += error;
	str += "</font></b>";

	m_textEdit->append(str);
}


//--------------------------------------------------------------------------------------------------
/// 
//--------------------------------------------------------------------------------------------------
void MessagePanel::convertStringToHTML(QString* str)
{
	str->replace("\n", "<br>");
	str->replace(" ", "&nbsp;");
}


//--------------------------------------------------------------------------------------------------
/// 
//--------------------------------------------------------------------------------------------------
QSize MessagePanel::sizeHint () const
{
    // As small as possible fow now
    return QSize(20, 20);
}


//--------------------------------------------------------------------------------------------------
/// 
//--------------------------------------------------------------------------------------------------
bool MessagePanel::isVisibleToUser()
{
	if (!isVisible()) return false;

	if (!m_textEdit) return false;
	if (!m_textEdit->isVisible()) return false;

	QRegion rgn = m_textEdit->visibleRegion();
	if (rgn.isEmpty()) return false;

	return true;
}

//--------------------------------------------------------------------------------------------------
/// 
//--------------------------------------------------------------------------------------------------
MessagePanel* MessagePanel::instance()
{
    return sm_messagePanelInstance;
}

}