Trait ItemTreeBuilder

pub trait ItemTreeBuilder {
    type SubComponentState: Clone;

    // 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;
    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.

Required 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