#include <cpBaseQtApplication/Plugins/Navigator.h>
#include <cpPlugins/Interface/Plugins.h>

// -------------------------------------------------------------------------
cpBaseQtApplication::Plugins::Navigator::
Navigator( QWidget* parent )
  : Superclass( parent )
{
  this->setDragEnabled( true );
  this->setDragDropMode( QAbstractItemView::DragOnly );
  this->setAlternatingRowColors( true );
  this->_Clear( );
}

// -------------------------------------------------------------------------
cpBaseQtApplication::Plugins::Navigator::
~Navigator( )
{
}

// -------------------------------------------------------------------------
void cpBaseQtApplication::Plugins::Navigator::
Update( )
{
  this->_Clear( );
  this->_Update( );
}

// -------------------------------------------------------------------------
void cpBaseQtApplication::Plugins::Navigator::
_Clear( )
{
  this->clear( );
  this->setColumnCount( 1 );
  QString header_txt = "Loaded plugins";
  if( QTreeWidgetItem* header = this->headerItem( ) )
    header->setText( 0, header_txt );
  else
    this->setHeaderLabel( header_txt );
}

// -------------------------------------------------------------------------
void cpBaseQtApplication::Plugins::Navigator::
_Update( )
{
  typedef cpPlugins::Interface::Plugins _TPlugins;
  _TPlugins::Pointer plugins = _TPlugins::New( );

  // Iterate over categories and filters
  auto filters = plugins->GetFilters( );
  for( auto catIt : filters )
  {
    const char* c_cat = catIt.first.c_str( );

    // Create or get category
    QList< QTreeWidgetItem* > cat_items =
      this->findItems( c_cat, Qt::MatchExactly | Qt::MatchRecursive );
    QTreeWidgetItem* cat = NULL;
    if( cat_items.size( ) == 0 )
    {
      cat = new QTreeWidgetItem(
        ( QTreeWidgetItem* )( NULL ), QStringList( c_cat )
        );
      this->addTopLevelItem( cat );
    }
    else
      cat = cat_items[ 0 ];

    for( auto filIt : catIt.second )
    {
      const char* c_fil = filIt.first.c_str( );
      QList< QTreeWidgetItem* > filter_items =
        this->findItems( c_fil, Qt::MatchExactly | Qt::MatchRecursive );
      auto i = filter_items.begin( );
      auto found_i = filter_items.end( );
      for( ; i != filter_items.end( ); ++i )
        if( ( *i )->parent( ) == cat )
          found_i = i;

      // Add filter
      if( found_i == filter_items.end( ) )
        QTreeWidgetItem* filter = new QTreeWidgetItem(
          cat, QStringList( c_fil )
          );

    } // rof

  } // rof
  this->expandAll( );
}

// eof - $RCSfile$