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

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

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

// -------------------------------------------------------------------------
void cpBaseQtApplication::PluginsNavigator::
_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::PluginsNavigator::
_Update( )
{
  cpPlugins::Interface::Plugins::Pointer interface =
    cpPlugins::Interface::Plugins::New( );

  // Iterate over categories and filters
  auto categories = interface->GetCategories( );
  unsigned int filter_count = 0;
  for( auto c = categories.begin( ); c != categories.end( ); ++c )
  {
    // Create or get category
    QList< QTreeWidgetItem* > cat_items =
      this->findItems( c->c_str( ), Qt::MatchExactly | Qt::MatchRecursive );
    QTreeWidgetItem* cat = NULL;
    if( cat_items.size( ) == 0 )
    {
      cat = new QTreeWidgetItem(
        ( QTreeWidgetItem* )( NULL ), QStringList( c->c_str( ) )
        );
      this->addTopLevelItem( cat );
    }
    else
      cat = cat_items[ 0 ];

    // Create filters
    auto filters = interface->GetFilters( *c );
    filter_count += filters.size( );
    for( auto f = filters.begin( ); f != filters.end( ); ++f )
    {
      QList< QTreeWidgetItem* > filter_items =
        this->findItems( f->c_str( ), 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( f->c_str( ) )
          );

    } // rof

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

// eof - $RCSfile$