Struct i_slint_compiler::object_tree::Component

pub struct Component {

    pub id: String,
    pub root_element: ElementRc,
    pub parent_element: Weak<RefCell<Element>>,
    pub optimized_elements: RefCell<Vec<ElementRc>>,
    pub embedded_file_resources: RefCell<HashMap<String, EmbeddedResources>>,
    pub root_constraints: RefCell<LayoutConstraints>,
    pub child_insertion_point: RefCell<Option<(ElementRc, ChildrenPlaceholder)>>,
    pub inlined_init_code: RefCell<BTreeMap<usize, Expression>>,
    pub init_code: RefCell<Vec<Expression>>,
    pub used_types: RefCell<UsedSubTypes>,
    pub popup_windows: RefCell<Vec<PopupWindow>>,
    pub exported_global_names: RefCell<Vec<ExportedName>>,
    pub is_root_component: Cell<bool>,
}

A component is a type in the language which can be instantiated, Or is materialized for repeated expression.

Fields

id: String

root_element: ElementRc

parent_element: Weak<RefCell<Element>>

The parent element within the parent component if this component represents a repeated element

optimized_elements: RefCell<Vec<ElementRc>>

List of elements that are not attached to the root anymore because they have been optimized away, but their properties may still be in use

embedded_file_resources: RefCell<HashMap<String, EmbeddedResources>>

Map of resources that should be embedded in the generated code, indexed by their absolute path on disk on the build system

root_constraints: RefCell<LayoutConstraints>

The layout constraints of the root item

child_insertion_point: RefCell<Option<(ElementRc, ChildrenPlaceholder)>>

When creating this component and inserting “children”, append them to the children of the element pointer to by this field.

inlined_init_code: RefCell<BTreeMap<usize, Expression>>

Code inserted from inlined components, ordered by offset of the place where it was inlined from. This way we can preserve the order across multiple inlining passes.

init_code: RefCell<Vec<Expression>>

Code to be inserted into the constructor, such as font registration, focus setting or init callback code collected from elements.

used_types: RefCell<UsedSubTypes>

The list of used extra types used (recursively) by this root component. (This only make sense on the root component)

popup_windows: RefCell<Vec<PopupWindow>>

exported_global_names: RefCell<Vec<ExportedName>>

The names under which this component should be accessible if it is a global singleton and exported.

is_root_component: Cell<bool>

This is the main entry point for the code generators. Such a component should have the full API, etc.

Implementations

impl Component

pub fn from_node(
    node: Component,
    diag: &mut BuildDiagnostics,
    tr: &TypeRegister
) -> Rc<Self>

pub fn is_global(&self) -> bool

This component is a global component introduced with the “global” keyword

pub fn visible_in_public_api(&self) -> bool

pub fn global_aliases(&self) -> Vec<String>

Returns the names of aliases to global singletons, exactly as specified in the .slint markup (not normalized).

pub fn is_sub_component(&self) -> bool

pub fn repeater_count(&self) -> u32

Trait Implementations

impl Debug for Component

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Component

fn default() -> Component

Returns the “default value” for a type.