slint::SortModel Class

template <typename ModelData>
class SortModel;

C++

#include <slint.h>

C++

Inherits slint::Model< ModelData >.

The SortModel acts as an adapter model for a given source model by sorting all rows with by order provided by the given sorting function. The sorting function is called for pairs of elements of the source model.

    auto source_model = std::make_shared<slint::VectorModel<SharedString>>(
//      std::vector<SharedString> { "lorem", "ipsum", "dolor" });
    auto sorted_model = std::make_shared<slint::SortModel<SharedString>>(
        source_model, [](auto lhs, auto rhs) { return lhs < rhs; }));

C++

Public Functions

SortModel

slint::SortModel< ModelData >::SortModel(std::shared_ptr< Model< ModelData > > source_model, std::function< bool(const ModelData &, const ModelData &)> comp)

Constructs a new SortModel that provides a sorted view on the source_model by applying the order given by the specified comp.

row_count (virtual)

size_t slint::SortModel< ModelData >::row_count() const override

The amount of row in the model.

row_data (virtual)

std::optional< ModelData > slint::SortModel< ModelData >::row_data(size_t i) const override

Returns the data for a particular row. This function should be called with row < row_count().

set_row_data (virtual)

void slint::SortModel< ModelData >::set_row_data(size_t i, const ModelData &value) override

Sets the data for a particular row.

This function should only be called with row < row_count().

If the model cannot support data changes, then it is ok to do nothing. The default implementation will print a warning to stderr.

If the model can update the data, it should also call row_changed

reset

void slint::SortModel< ModelData >::reset()

Re-applies the model’s sort function on each row of the source model. Use this if state external to the sort function has changed.

unsorted_row

int slint::SortModel< ModelData >::unsorted_row(int sorted_row_index) const

Given the sorted_row_index, this function returns the corresponding row index in the source model.

source_model

std::shared_ptr< Model< ModelData > > slint::SortModel< ModelData >::source_model() const

Returns the source model of this filter model.