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Add a C++ Map Model class (#1687)

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* Add a C++ Map Model class

This matches the MapModel in the Rust API.
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Simon Hausmann 2022-09-27 16:03:56 +02:00 • committed by GitHub
parent 388cf32770
commit cfbdce735f
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3 changed files with 132 additions and 1 deletions
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64
api/cpp/tests/models.cpp
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@ -217,3 +217,67 @@ SCENARIO("Filtering Model Remove")
REQUIRE(even_rows->row_data(0) == 2);
REQUIRE(even_rows->row_data(1) == 4);
}
SCENARIO("Mapped Model")
{
auto vec_model = std::make_shared<slint::VectorModel<int>>(std::vector<int> { 1, 2, 3, 4 });
auto plus_one_model = std::make_shared<slint::MapModel<int, int>>(
vec_model, [](auto value) { return value + 1; });
auto observer = std::make_shared<ModelObserver>();
plus_one_model->attach_peer(observer);
REQUIRE(plus_one_model->row_count() == 4);
REQUIRE(plus_one_model->row_data(0) == 2);
REQUIRE(plus_one_model->row_data(1) == 3);
REQUIRE(plus_one_model->row_data(2) == 4);
REQUIRE(plus_one_model->row_data(3) == 5);
vec_model->insert(0, 100);
REQUIRE(observer->added_rows.size() == 1);
REQUIRE(observer->added_rows[0] == ModelObserver::Range { 0, 1 });
REQUIRE(observer->changed_rows.empty());
REQUIRE(observer->removed_rows.empty());
REQUIRE(!observer->model_reset);
observer->clear();
REQUIRE(plus_one_model->row_count() == 5);
REQUIRE(plus_one_model->row_data(0) == 101);
REQUIRE(plus_one_model->row_data(1) == 2);
REQUIRE(plus_one_model->row_data(2) == 3);
REQUIRE(plus_one_model->row_data(3) == 4);
REQUIRE(plus_one_model->row_data(4) == 5);
vec_model->set_row_data(1, 3);
REQUIRE(observer->added_rows.empty());
REQUIRE(observer->changed_rows.size() == 1);
REQUIRE(observer->changed_rows[0] == 1);
REQUIRE(observer->removed_rows.empty());
REQUIRE(!observer->model_reset);
observer->clear();
REQUIRE(plus_one_model->row_count() == 5);
REQUIRE(plus_one_model->row_data(0) == 101);
REQUIRE(plus_one_model->row_data(1) == 4);
REQUIRE(plus_one_model->row_data(2) == 3);
REQUIRE(plus_one_model->row_data(3) == 4);
REQUIRE(plus_one_model->row_data(4) == 5);
vec_model->erase(3);
REQUIRE(observer->added_rows.empty());
REQUIRE(observer->changed_rows.empty());
REQUIRE(observer->removed_rows.size() == 1);
REQUIRE(observer->removed_rows[0] == ModelObserver::Range { 3, 1 });
REQUIRE(!observer->model_reset);
observer->clear();
REQUIRE(plus_one_model->row_count() == 4);
REQUIRE(plus_one_model->row_data(0) == 101);
REQUIRE(plus_one_model->row_data(1) == 4);
REQUIRE(plus_one_model->row_data(2) == 3);
REQUIRE(plus_one_model->row_data(3) == 5);
}