Struct i_slint_compiler::object_tree::Element
source · pub struct Element {Show 21 fields
pub id: String,
pub base_type: ElementType,
pub bindings: BindingsMap,
pub property_analysis: RefCell<HashMap<String, PropertyAnalysis>>,
pub children: Vec<ElementRc>,
pub enclosing_component: Weak<Component>,
pub property_declarations: BTreeMap<String, PropertyDeclaration>,
pub named_references: NamedReferenceContainer,
pub repeated: Option<RepeatedElementInfo>,
pub states: Vec<State>,
pub transitions: Vec<Transition>,
pub child_of_layout: bool,
pub layout_info_prop: Option<(NamedReference, NamedReference)>,
pub accessibility_props: AccessibilityProps,
pub is_flickable_viewport: bool,
pub has_popup_child: bool,
pub item_index: OnceCell<usize>,
pub item_index_of_first_children: OnceCell<usize>,
pub is_legacy_syntax: bool,
pub inline_depth: i32,
pub node: Option<Element>,
}Expand description
An Element is an instantiation of a Component
Fields§
§id: StringThe id as named in the original .slint file.
Note that it can only be used for lookup before inlining. After inlining there can be duplicated id in the component. The id are then re-assigned unique id in the assign_id pass
base_type: ElementType§bindings: BindingsMapCurrently contains also the callbacks. FIXME: should that be changed?
property_analysis: RefCell<HashMap<String, PropertyAnalysis>>§children: Vec<ElementRc>§enclosing_component: Weak<Component>The component which contains this element.
property_declarations: BTreeMap<String, PropertyDeclaration>§named_references: NamedReferenceContainerMain owner for a reference to a property.
repeated: Option<RepeatedElementInfo>This element is part of a for <xxx> in <model>:
states: Vec<State>§transitions: Vec<Transition>§child_of_layout: booltrue when this item’s geometry is handled by a layout
layout_info_prop: Option<(NamedReference, NamedReference)>The property pointing to the layout info. (horizontal, vertical)
accessibility_props: AccessibilityProps§is_flickable_viewport: booltrue if this Element is the fake Flickable viewport
has_popup_child: booltrue if this Element may have a popup as child meaning it cannot be optimized because the popup references it.
item_index: OnceCell<usize>This is the component-local index of this item in the item tree array. It is generated after the last pass and before the generators run.
item_index_of_first_children: OnceCell<usize>the index of the first children in the tree, set with item_index
is_legacy_syntax: boolTrue when this element is in a component was declared with the := symbol instead of the component keyword
inline_depth: i32How many times the element was inlined
node: Option<Element>The AST node, if available
Implementations§
source§impl Element
impl Element
pub fn from_node(
node: Element,
id: String,
parent_type: ElementType,
component_child_insertion_point: &mut Option<(ElementRc, ChildrenPlaceholder)>,
is_legacy_syntax: bool,
diag: &mut BuildDiagnostics,
tr: &TypeRegister
) -> ElementRc
sourcepub fn lookup_property<'a>(&self, name: &'a str) -> PropertyLookupResult<'a>
pub fn lookup_property<'a>(&self, name: &'a str) -> PropertyLookupResult<'a>
Return the type of a property in this element or its base, along with the final name, in case the provided name points towards a property alias. Type::Invalid is returned if the property does not exist.
pub fn native_class(&self) -> Option<Rc<NativeClass>>
pub fn builtin_type(&self) -> Option<Rc<BuiltinElement>>
pub fn layout_info_prop(
&self,
orientation: Orientation
) -> Option<&NamedReference>
sourcepub fn original_name(&self) -> String
pub fn original_name(&self) -> String
Returns the element’s name as specified in the markup, not normalized.
sourcepub fn is_binding_set(
self: &Element,
property_name: &str,
need_explicit: bool
) -> bool
pub fn is_binding_set(
self: &Element,
property_name: &str,
need_explicit: bool
) -> bool
Return true if the binding is set, either on this element or in a base
If need_explicit is true, then only consider binding set in the code, not the ones set
by the compiler later.
sourcepub fn set_binding_if_not_set(
&mut self,
property_name: String,
expression_fn: impl FnOnce() -> Expression
) -> bool
pub fn set_binding_if_not_set(
&mut self,
property_name: String,
expression_fn: impl FnOnce() -> Expression
) -> bool
Set the property property_name of this Element only if it was not set.
the expression_fn will only be called if it isn’t set
returns true if the binding was changed