| /* |
| * Copyright 2020 The Android Open Source Project |
| * |
| * 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. |
| */ |
| |
| package androidx.ui.viewinterop |
| |
| import android.content.Context |
| import android.view.View |
| import android.view.ViewGroup |
| import androidx.compose.runtime.Composable |
| import androidx.compose.runtime.emit |
| import androidx.ui.core.ContextAmbient |
| import androidx.ui.node.UiApplier |
| |
| /** |
| * Emit a view into the current composition. |
| * |
| * @sample androidx.ui.core.samples.EmitViewButtonSample |
| * |
| * @param ctor The constructor of the view with a single [Context] parameter. |
| * @param update A function which will execute when the composition is applied, with the emitted |
| * view instance passed in. This function is expected to be used to handle the "update" logic to |
| * handle any changes. |
| */ |
| @Composable |
| fun <T : View> emitView( |
| ctor: (Context) -> T, |
| update: (T) -> Unit |
| ) { |
| val context = ContextAmbient.current |
| emit<T, UiApplier>( |
| ctor = { ctor(context) }, |
| update = { |
| reconcile(update) |
| } |
| ) |
| } |
| |
| /** |
| * Emit a ViewGroup into the current composition, with the emitted nodes of [children] as the |
| * content. |
| * |
| * @sample androidx.ui.core.samples.EmitViewLinearLayoutSample |
| * |
| * @param ctor The constructor of the view with a single [Context] parameter. |
| * @param update A function which will execute when the composition is applied, with the emitted |
| * view instance passed in. This function is expected to be used to handle the "update" logic to |
| * handle any changes. |
| * @param children the composable content that will emit the "children" of this view. |
| */ |
| @Composable |
| fun <T : ViewGroup> emitView( |
| ctor: (Context) -> T, |
| update: (T) -> Unit, |
| children: @Composable () -> Unit |
| ) { |
| val context = ContextAmbient.current |
| emit<T, UiApplier>( |
| ctor = { ctor(context) }, |
| update = { |
| reconcile(update) |
| }, |
| children = children |
| ) |
| } |