| /* |
| * Copyright 2022 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.foundation.lazy.staggeredgrid |
| |
| import androidx.compose.foundation.ExperimentalFoundationApi |
| import androidx.compose.foundation.lazy.layout.LazyLayoutIntervalContent |
| import androidx.compose.foundation.lazy.layout.MutableIntervalList |
| import androidx.compose.runtime.Composable |
| |
| @OptIn(ExperimentalFoundationApi::class) |
| internal class LazyStaggeredGridScopeImpl : LazyStaggeredGridScope { |
| val intervals = MutableIntervalList<LazyStaggeredGridIntervalContent>() |
| |
| override fun item( |
| key: Any?, |
| contentType: Any?, |
| span: StaggeredGridItemSpan?, |
| content: @Composable LazyStaggeredGridItemScope.() -> Unit |
| ) { |
| items( |
| count = 1, |
| key = key?.let { { key } }, |
| contentType = { contentType }, |
| span = span?.let { { span } }, |
| itemContent = { content() } |
| ) |
| } |
| |
| override fun items( |
| count: Int, |
| key: ((index: Int) -> Any)?, |
| contentType: (index: Int) -> Any?, |
| span: ((index: Int) -> StaggeredGridItemSpan)?, |
| itemContent: @Composable LazyStaggeredGridItemScope.(index: Int) -> Unit |
| ) { |
| intervals.addInterval( |
| count, |
| LazyStaggeredGridIntervalContent( |
| key, |
| contentType, |
| span, |
| itemContent |
| ) |
| ) |
| } |
| } |
| |
| @OptIn(ExperimentalFoundationApi::class) |
| internal object LazyStaggeredGridItemScopeImpl : LazyStaggeredGridItemScope |
| |
| @OptIn(ExperimentalFoundationApi::class) |
| internal class LazyStaggeredGridIntervalContent( |
| override val key: ((index: Int) -> Any)?, |
| override val type: ((index: Int) -> Any?), |
| val span: ((index: Int) -> StaggeredGridItemSpan)?, |
| val item: @Composable LazyStaggeredGridItemScope.(Int) -> Unit |
| ) : LazyLayoutIntervalContent |