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Update equatable bindings only if modified

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This commit is contained in:
david-swift 2024-09-17 13:13:05 +02:00
parent 6289e518e5
commit 2f8d31677c
2 changed files with 46 additions and 19 deletions
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20
Sources/Model/User Interface/View/Properties/BindingProperty.swift
View File

@ -74,3 +74,23 @@ protocol BindingPropertyProtocol {
var setValue: (Pointer, Value, ViewStorage) -> Void { get }
}
extension Widget {
/// Apply a binding property to the framework.
/// - Parameters:
/// - property: The property.
/// - storage: The view storage.
func setBindingProperty<Property>(
property: Property,
storage: ViewStorage
) where Property: BindingPropertyProtocol {
if let optional = property.wrappedValue.wrappedValue as? any OptionalProtocol, optional.optionalValue == nil {
return
}
if let pointer = storage.pointer as? Property.Pointer {
property.setValue(pointer, property.wrappedValue.wrappedValue, storage)
}
}
}

45
Sources/Model/User Interface/View/Properties/Property.swift
View File

@ -211,7 +211,18 @@ extension Widget {
/// - parent: The view storage.
func initBindingProperty<Property>(_ value: Property, parent: ViewStorage) where Property: BindingPropertyProtocol {
if let view = parent.pointer as? Property.Pointer {
value.observe(view, value.wrappedValue, parent)
value.observe(
view,
.init {
value.wrappedValue.wrappedValue
} set: { newValue in
if let compareValue = newValue as? any Equatable,
!equal(value.wrappedValue.wrappedValue, compareValue) {
value.wrappedValue.wrappedValue = newValue
}
},
parent
)
}
}
@ -321,8 +332,20 @@ extension Widget {
_ property: Property,
_ value: Value
) -> Bool where Property: PropertyProtocol, Value: Equatable {
if let propertyValue = property.wrappedValue as? Value {
return propertyValue == value
equal(property.wrappedValue, value)
}
/// Check whether a value is equal to another value.
/// - Parameters:
/// - value1: The first value.
/// - value2: The second value.
/// - Returns: Whether the values are equal.
func equal<Value1, Value2>(
_ value1: Value1,
_ value2: Value2
) -> Bool where Value2: Equatable {
if let value1 = value1 as? Value2 {
return value1 == value2
}
return false
}
@ -340,22 +363,6 @@ extension Widget {
}
}
/// Apply a binding property to the framework.
/// - Parameters:
/// - property: The property.
/// - storage: The view storage.
func setBindingProperty<Property>(
property: Property,
storage: ViewStorage
) where Property: BindingPropertyProtocol {
if let optional = property.wrappedValue.wrappedValue as? any OptionalProtocol, optional.optionalValue == nil {
return
}
if let pointer = storage.pointer as? Property.Pointer {
property.setValue(pointer, property.wrappedValue.wrappedValue, storage)
}
}
}
/// A protocol for values which can be optional.