1  #include "filterrole.h"
 2  #include "filters/filter.h"
 3  
 4  namespace qqsfpm {
 5  
 6  /*!
 7      \qmltype FilterRole
 8      \inherits SingleRole
 9      \inqmlmodule SortFilterProxyModel
10      \ingroup ProxyRoles
11      \ingroup FilterContainer
12      \brief A role resolving to \c true for rows matching all its filters.
13  
14      A FilterRole is a \l ProxyRole that returns \c true for rows matching all its filters.
15  
16      In the following example, the \c isAdult role will be equal to \c true if the \c age role is superior or equal to 18.
17      \code
18      SortFilterProxyModel {
19          sourceModel: personModel
20          proxyRoles: FilterRole {
21              name: "isAdult"
22              RangeFilter { roleName: "age"; minimumValue: 18; minimumInclusive: true }
23          }
24      }
25      \endcode
26      \sa FilterContainer
27  */
28  
29  /*!
30      \qmlproperty list<Filter> FilterRole::filters
31      \default
32  
33      This property holds the list of filters for this filter role.
34      The data of this role will be equal to the \c true if all its filters match the model row, \c false otherwise.
35  
36      \sa Filter, FilterContainer
37  */
38  
39  void FilterRole::onFilterAppended(Filter* filter)
40  {
41      connect(filter, &Filter::invalidated, this, &FilterRole::invalidate);
42      invalidate();
43  }
44  
45  void FilterRole::onFilterRemoved(Filter* filter)
46  {
47      disconnect(filter, &Filter::invalidated, this, &FilterRole::invalidate);
48      invalidate();
49  }
50  
51  void FilterRole::onFiltersCleared()
52  {
53      invalidate();
54  }
55  
56  QVariant FilterRole::data(const QModelIndex& sourceIndex, const QQmlSortFilterProxyModel& proxyModel)
57  {
58      return std::all_of(m_filters.cbegin(), m_filters.cend(),
59          [&] (Filter* filter) {
60              return filter->filterAcceptsRow(sourceIndex, proxyModel);
61          }
62      );
63  }
64  
65  }