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Change Model::row_data to return an Option<T> (#873)

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Change Model::row_data to return an Option<T> (rust) or std::optional<T> (c++)

Co-authored-by: Olivier Goffart <olivier@woboq.com>
Co-authored-by: Simon Hausmann <hausmann@gmail.com>
This commit is contained in:
Tobias Hunger 2022-01-26 13:55:38 +01:00 • committed by GitHub
parent e2ec76f9ef
commit e3c4209b1f
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24 changed files with 229 additions and 102 deletions
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8
examples/printerdemo/cpp_interpreted/main.cpp
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@ -10,7 +10,11 @@ using sixtyfps::interpreter::Value;
struct InkLevelModel : sixtyfps::Model<Value>
{
int row_count() const override { return m_data.size(); }
Value row_data(int i) const override { return m_data[i]; }
std::optional<Value> row_data(int i) const override {
if (i < m_data.size())
return { m_data[i] };
return {};
}
private:
static Value make_inklevel_value(sixtyfps::Color color, float level)
@ -93,7 +97,7 @@ int main()
sixtyfps::Timer printer_queue_progress_timer(std::chrono::seconds(1), [=]() {
if (printer_queue->row_count() > 0) {
auto top_item = *printer_queue->row_data(0).to_struct();
auto top_item = *(*printer_queue->row_data(0)).to_struct();
auto progress = *top_item.get_field("progress")->to_number() + 1.;
top_item.set_field("progress", progress);
top_item.set_field("status", sixtyfps::SharedString("PRINTING"));