| /* |
| * Copyright 2019 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.core |
| |
| import androidx.ui.unit.Density |
| |
| /** |
| * A [Modifier] that provides data to the parent [Layout]. This can be read from within the |
| * the [Layout] during measurement and positioning, via [IntrinsicMeasurable.parentData]. |
| * Th parent data is commonly used to inform the parent how the child [Layout] should be measured |
| * and positioned. |
| */ |
| interface ParentDataModifier : Modifier.Element { |
| /** |
| * Provides a parentData, given the [parentData] already provided through the modifier's chain. |
| */ |
| fun Density.modifyParentData(parentData: Any?): Any? |
| } |