Widget class abstract
Describes the configuration for an RenderElement.
Widgets are the central class hierarchy in the Rad framework. A widget is an immutable description of part of a user interface. Widgets can be inflated into render elements.
- Implementers
- Annotations
-
- @immutable
Properties
- correspondingTag → DomTagType?
-
Corresponding HTML tag to use to render this widget
no setter
- hashCode → int
-
The hash code for this object.
no setterinherited
- key → Key?
-
Keys help Rad identify which widgets have changed, are added, or are
removed when a widget has multiple sibling widgets.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
-
widgetCaptureEventListeners
→ Map<
DomEventType, EventCallback?> -
Events that this widget is listening to in capturing phase.
no setter
-
widgetEventListeners
→ Map<
DomEventType, EventCallback?> -
Events that this widget is listening to in bubbling phase.
no setter
Methods
-
createRenderElement(
RenderElement parent) → RenderElement - Create element for current widget.
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
shouldUpdateWidget(
Widget oldWidget) → bool - Whether to update current widget.
-
shouldUpdateWidgetChildren(
Widget oldWidget, bool shouldUpdateWidget) → bool - Whether to update current widget's children.
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited