observeItemProperty¶
@Composable
inline fun <T> observeItemProperty(propertyName: String, initialValue: T? = null): MutableState<T?>
Observes a property on the current ComposeItemContainerMenu in the current composition context. The net.kernelpanicsoft.archie.gui.blockentity.observeProperty equivalent for item-backed menus.
Returns a MutableState that automatically triggers recomposition when the property changes. Must be called where LocalItemState has been provided with a non-null value (i.e. inside an item-backed menu's screen composition) - otherwise it throws.
Example¶
@Composable
fun MyComponent() {
val progressState = observeItemProperty<Int>("progress")
Text("Progress: ${progressState.value}")
}
Return¶
A MutableState of type T reflecting the property's current value.
Parameters¶
-
propertyName: The name of the property to observe.
-
T: The expected type of the property.
Throws¶
RuntimeException-
if no
ComposeItemStateis available in the current composition.