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/******************************************************************************
*
* Copyright (C) 2002 Hugo PEREIRA <mailto: hugo.pereira@free.fr>
*
* This 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 software 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, see <http://www.gnu.org/licenses/>.
*
*******************************************************************************/
#include "TextEncodingWidget.h"
#include "LineEditor.h"
#include "ListModel.h"
#include "TextEncodingString.h"
#include "TextSelection.h"
#include "TreeView.h"
#include <QHeaderView>
#include <QLayout>
#include <QTextCodec>
#include <algorithm>
//! model
class TextEncodingModel: public ListModel<TextEncodingString>
{
public:
//! constructor
explicit TextEncodingModel( QObject* parent ):
ListModel<TextEncodingString>( parent )
{}
//! column type enumeration
enum ColumnType
{
Name,
nColumns
};
//!@name methods reimplemented from base class
//@{
// return data for a given index
virtual QVariant data( const QModelIndex& index, int role ) const
{
// check index, role and column
if( index.isValid() && role == Qt::DisplayRole )
{
return get()[index.row()].get();
} else return QVariant();
}
//! header data
virtual QVariant headerData( int, Qt::Orientation, int = Qt::DisplayRole ) const
{ return QVariant(); }
//! number of columns for a given index
virtual int columnCount( const QModelIndex& = QModelIndex() ) const
{ return nColumns; }
//! used to sort FileInfo objects
class SortFTor: public ItemModel::SortFTor
{
public:
//! constructor
explicit SortFTor( int type, Qt::SortOrder order = Qt::AscendingOrder ):
ItemModel::SortFTor( type, order )
{}
//! destructor
virtual ~SortFTor()
{}
//! prediction
virtual bool operator() ( const TextEncodingString& constFirst, const TextEncodingString& constSecond ) const
{
TextEncodingString first( constFirst );
TextEncodingString second( constSecond );
if( order_ == Qt::DescendingOrder ) std::swap( first, second );
return first < second;
}
};
protected:
//! sort
virtual void _sort( int column, Qt::SortOrder order = Qt::AscendingOrder )
{ std::sort( _get().begin(), _get().end(), SortFTor( (ColumnType) column, order ) ); }
};
//______________________________________________________________________
TextEncodingWidget::TextEncodingWidget( QWidget* parent ):
QWidget( parent ),
Counter( "TextEncodingWidget" ),
model_( new TextEncodingModel( this ) )
{
// layout
QVBoxLayout* layout( new QVBoxLayout );
layout->setMargin( 0 );
setLayout( layout );
layout->addWidget( list_ = new TreeView( this ) );
list_->setSelectionMode( QAbstractItemView::SingleSelection );
list_->setModel( model_ );
list_->header()->hide();
layout->addWidget( editor_ = new LineEditor( this ) );
// connections
connect( editor_, SIGNAL(textChanged(QString)), SLOT(_find(QString)) );
connect( list_->selectionModel(), SIGNAL(selectionChanged(QItemSelection,QItemSelection)), SLOT(_updateSelection()) );
connect( list_->selectionModel(), SIGNAL(currentChanged(QModelIndex,QModelIndex)), SLOT(_updateSelection()) );
connect( list_, SIGNAL(clicked(QModelIndex)), SLOT(_updateSelection()) );
_loadTextCodecs();
}
//______________________________________________________________________
void TextEncodingWidget::setEncoding( const QByteArray& constValue )
{
Debug::Throw() << "TextEncodingMenu::setEncoding - encoding: " << constValue << endl;
// find codec matching value and check
QTextCodec* codec( QTextCodec::codecForName( constValue ) );
if( !codec ) return;
// get 'standard name'
QByteArray value( codec->name() );
QModelIndex index( model_->index( TextEncodingString( value ) ) );
list_->selectionModel()->select( index, QItemSelectionModel::Clear|QItemSelectionModel::Select|QItemSelectionModel::Rows );
list_->selectionModel()->setCurrentIndex( index, QItemSelectionModel::Current|QItemSelectionModel::Rows );
editor_->setText( value );
}
//______________________________________________________________________
void TextEncodingWidget::_loadTextCodecs()
{
// use MIBs to get rid of aliases
QList<TextEncodingString> codecStrings;
for( const auto& codecId:QTextCodec::availableMibs() )
{
QTextCodec* codec( QTextCodec::codecForMib( codecId ) );
if( codec ) codecStrings.append( TextEncodingString( codec->name() ) );
}
model_->set( codecStrings );
}
//______________________________________________________________________
void TextEncodingWidget::_updateSelection()
{
// do nothing if locked
if( locked_ ) return;
// get current index
QModelIndex current( list_->selectionModel()->currentIndex() );
if( !current.isValid() ) return;
const TextEncodingString& codec( model_->get(current) );
editor_->setText( codec.get() );
}
//______________________________________________________________________
void TextEncodingWidget::_find(QString text )
{
TextSelection selection( text );
selection.setFlag( TextSelection::BeginOfWord, true );
selection.setFlag( TextSelection::NoIncrement, true );
locked_ = true;
list_->find( selection );
locked_ = false;
}
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