Tokamak/Sources/TokamakDOM/DOMRef.swift

31 lines
1.1 KiB
Swift

// Copyright 2020 Tokamak contributors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
import JavaScriptKit
@_spi(TokamakCore) import TokamakCore
public extension View {
/** Allows capturing DOM references of host views. The resulting reference is written
to a given `binding`.
*/
func _domRef(_ binding: Binding<JSObject?>) -> some View {
// Convert `Binding<JSObject?>` to `Binding<DOMNode?>` first.
let targetBinding = Binding(
get: { binding.wrappedValue.map(DOMNode.init) },
set: { binding.wrappedValue = $0?.ref }
)
return _targetRef(targetBinding)
}
}