Trait sixtyfps_compilerlib::generator::ItemTreeBuilder

pub trait ItemTreeBuilder {
    type SubComponentState: Clone;
    fn push_repeated_item(
        &mut self, 
        item: &ElementRc, 
        repeater_count: u32, 
        parent_index: u32, 
        component_state: &Self::SubComponentState
    );
    fn push_native_item(
        &mut self, 
        item: &ElementRc, 
        children_offset: u32, 
        parent_index: u32, 
        component_state: &Self::SubComponentState
    );
    fn enter_component(
        &mut self, 
        item: &ElementRc, 
        sub_component: &Rc<Component>, 
        children_offset: u32, 
        component_state: &Self::SubComponentState
    ) -> Self::SubComponentState;
    fn enter_component_children(
        &mut self, 
        item: &ElementRc, 
        repeater_count: u32, 
        component_state: &Self::SubComponentState, 
        sub_component_state: &Self::SubComponentState
    );
}

A reference to this trait is passed to the build_item_tree function. It can be used to build the array for the item tree.

Associated Types

type SubComponentState: Clone

Some state that contains the code on how to access some particular component

Required methods

fn push_repeated_item(
    &mut self,
    item: &ElementRc,
    repeater_count: u32,
    parent_index: u32,
    component_state: &Self::SubComponentState
)

fn push_native_item(
    &mut self,
    item: &ElementRc,
    children_offset: u32,
    parent_index: u32,
    component_state: &Self::SubComponentState
)

fn enter_component(
    &mut self,
    item: &ElementRc,
    sub_component: &Rc<Component>,
    children_offset: u32,
    component_state: &Self::SubComponentState
) -> Self::SubComponentState

Called when a component is entered, this allow to change the component_state. The returned SubComponentState will be used for all the items within that component

fn enter_component_children(
    &mut self,
    item: &ElementRc,
    repeater_count: u32,
    component_state: &Self::SubComponentState,
    sub_component_state: &Self::SubComponentState
)

Called before the children of a component are entered.

Implementors