Question

问题: I m 查询创建模型(基于QAbstractItemModel)至QTreeView,但可发现sane代码。关键的例子以<代码>QStandardModel为基础,该编码并不十分有用和复杂,Internet examples 。它是建立在 p基础上的。准则其他信息可以给我正确的方向。因此,这里我有:

<代码>td:map

type st st : map map map ContractorData >, NotData< Company 资料来源:统计局。

这里的数据实例(<>CompanyName+ContractorsNames):

[Microsoft]*
   [Bill Gates]
   [Steve Balmer]
   [...]
[Apple]*
   [Steve Jobs - R.I.P.]
   [Wozniak]
[OtherStuff]*
...

而我所需要的是,用上述数据制作<代码>QTreeView。

谁能提供帮助?

感谢!

Answer 1

因此,由于这里没有做任何职位,我在此提出我自己的解决办法(也使用文字过滤):

void ContractorsFilter::onCustomFilterChanged( const QString& text )
{
     try
     {
          struct MatchFilter
          {
               // data
               QString        filter_;
               Companies&     filtered_recipients_;

               // methods
               MatchFilter( const QString& _filter, Companies& _recipients )
                    : filter_( _filter )
                    , filtered_recipients_( _recipients )
               {
                    filtered_recipients_.clear();
               }

               void operator()( const Companies::value_type& val ) const
               {
                    bool isFound = false;
                    std::vector< ContractorData >::const_iterator con_i( val.second.begin() ), con_e( val.second.end() );
                    for( ; con_i != con_e; ++con_i )
                    {
                         const QString contractorName = (*con_i).name;
                         if( contractorName.contains( filter_, Qt::CaseInsensitive ) )
                         {
                              filtered_recipients_[ val.first ].push_back( (*con_i) );
                              isFound = true;
                         }
                    }

                    const QString companyName = val.first.name;
                    if( companyName.contains( filter_, Qt::CaseInsensitive ) )
                    {
                         filtered_recipients_[ val.first ].push_back( ContractorData() );
                    }
               }
          };

          struct FillView
          {
               // data
               QFont     boldFont;
               QBrush    whiteBrush;

               QStandardItemModel* model_;

               // methods
               FillView( QStandardItemModel* model )
                    : model_( model )
               {
                    model_->clear();
               }

               void operator ()( const Companies::value_type& val ) const
               {
                    struct AppendContractors 
                    {
                         // data
                         QStandardItem* parent_;

                         // methods
                         AppendContractors( QStandardItem* _parent = 0 )
                              : parent_( _parent )
                         {}

                         bool isEmpty( const ContractorData& contractor ) const
                         {
                              return contractor.id.isEmpty();
                         }

                         void operator()( const std::vector< ContractorData >::value_type& contractor ) const
                         {
                              if( !isEmpty( contractor ) )
                              {
                                   QStandardItem *item = 0;

                                   QList< QStandardItem* > line;
                                   line << ( item = new QStandardItem( QIcon( ACCOUNT_ITEM_ICON ), contractor.name ) );
                                   item->setSizeHint( QSize( 0, 25 ) );

                                   parent_->appendRow( line );
                              }
                         }
                    };

                    QStandardItem *parentItem = model_->invisibleRootItem();

                    // добавляем новую компанию + контрагента
                    QList< QStandardItem* > line;
                    line << ( parentItem = new QStandardItem( QIcon( COMPANY_ITEM_ICON ), val.first.name ) );
                    parentItem->setSizeHint( QSize( 0, 25 ) );

                    model_->appendRow( line );

                    std::for_each( val.second.begin(), val.second.end(), AppendContractors( parentItem ) );
               }
          };

          // удаляем символ(ы), которые не фильтруются
          // формируется новая таблица, которая и будет использоваться моделью для отображения
          std::for_each( data_.begin(), data_.end(),
               MatchFilter( text, filter_data_ ) );

          // вывод отфильтрованных контрагентов
          std::for_each( filter_data_.begin(), filter_data_.end(),
               FillView( model_ ) );

          ui_.treeView->expandAll();
     }
     catch( const std::exception& e )
     {
          Core::errLog( "ContractorsFilter::onCustomFilterChanged", e.what() );
          throw;
     }
}

PS: 类别<代码>Companies

typedef std::map< CompanyData, ContractorsData, LessData< CompanyData > > Companies;

CompanyData,ContractorsData为简单结构......

有一个天!

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