//##################################################################################################
//
//   Custom Visualization Core library
//   Copyright (C) 2011-2013 Ceetron AS
//
//   This library may be used under the terms of either the GNU General Public License or
//   the GNU Lesser General Public License as follows:
//
//   GNU General Public License Usage
//   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.
//
//   GNU Lesser General Public License Usage
//   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 at <<http://www.gnu.org/licenses/lgpl-2.1.html>>
//   for more details.
//
//##################################################################################################

#include "cafMessagePanel.h"

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

namespace caf
{
MessagePanel* MessagePanel::sm_messagePanelInstance = nullptr;

//==================================================================================================
///
/// \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;
}

} // namespace caf