TestModifierUpdater.kt
/*
* 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.compose.ui.layout
import androidx.compose.runtime.Applier
import androidx.compose.runtime.Composable
import androidx.compose.runtime.ComposeNode
import androidx.compose.ui.Modifier
import androidx.compose.ui.node.ComposeUiNode
import androidx.compose.ui.node.LayoutNode
/** @hide */
@Deprecated(
"It is a test API, do not use it in the real applications",
level = DeprecationLevel.ERROR
)
/*@VisibleForTesting*/
class TestModifierUpdater internal constructor(private val node: LayoutNode) {
fun updateModifier(modifier: Modifier) {
node.modifier = modifier
}
}
/** @hide */
@Deprecated(
"It is a test API, do not use it in the real applications",
level = DeprecationLevel.ERROR
)
/*@VisibleForTesting*/
@Composable
@Suppress("DEPRECATION_ERROR")
fun TestModifierUpdaterLayout(onAttached: (TestModifierUpdater) -> Unit) {
val measurePolicy = MeasurePolicy { _, constraints ->
layout(constraints.maxWidth, constraints.maxHeight) {}
}
ComposeNode<LayoutNode, Applier<Any>>(
factory = LayoutNode.Constructor,
update = {
set(measurePolicy, ComposeUiNode.SetMeasurePolicy)
init { onAttached(TestModifierUpdater(this)) }
}
)
}