| /* |
| * 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.compose.ui.tooling |
| |
| import androidx.compose.runtime.Composable |
| import androidx.compose.runtime.InternalComposeApi |
| import androidx.compose.runtime.Providers |
| import androidx.compose.runtime.SlotTable |
| import androidx.compose.runtime.currentComposer |
| import androidx.compose.runtime.tooling.InspectionTables |
| import androidx.compose.ui.platform.InspectionMode |
| import java.util.Collections |
| import java.util.WeakHashMap |
| |
| /** |
| * Storage for the preview generated [SlotTable]s. |
| */ |
| internal interface SlotTableRecord { |
| @OptIn(InternalComposeApi::class) |
| val store: Set<SlotTable> |
| |
| companion object { |
| fun create(): SlotTableRecord = SlotTableRecordImpl() |
| } |
| } |
| |
| private class SlotTableRecordImpl : SlotTableRecord { |
| @OptIn(InternalComposeApi::class) |
| override val store: MutableSet<SlotTable> = |
| Collections.newSetFromMap(WeakHashMap()) |
| } |
| |
| /** |
| * A wrapper for compositions in inspection mode. The composition inside the Inspectable component |
| * is in inspection mode. |
| * |
| * @param slotTableRecord [SlotTableRecord] to record the SlotTable used in the composition of [content] |
| * |
| * @suppress |
| */ |
| @Composable |
| @OptIn(InternalComposeApi::class) |
| internal fun Inspectable( |
| slotTableRecord: SlotTableRecord, |
| content: @Composable () -> Unit |
| ) { |
| currentComposer.collectKeySourceInformation() |
| val store = (slotTableRecord as SlotTableRecordImpl).store |
| store.add(currentComposer.slotTable) |
| Providers( |
| InspectionMode provides true, |
| InspectionTables provides store, |
| content = content |
| ) |
| } |
| |
| /** |
| * A wrapper for inspection-mode-only behavior. The children of this component will only be included |
| * in the composition when the composition is in inspection mode. |
| */ |
| @Composable |
| fun InInspectionModeOnly(content: @Composable () -> Unit) { |
| if (InspectionMode.current) { |
| content() |
| } |
| } |