ActivityRule.kt
/*
* Copyright 2021 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.window.embedding
import androidx.window.core.ExperimentalWindowApi
/**
* Layout configuration rules for individual activities with split layouts. Take precedence over
* [SplitPairRule].
*/
@ExperimentalWindowApi
class ActivityRule(
/**
* Filters used to choose when to apply this rule.
*/
filters: Set<ActivityFilter>,
/**
* Whether the activity should always be expanded on launch. Some activities are supposed to
* expand to the full task bounds, independent of the state of the split. An example is an
* activity that blocks all user interactions, like a warning dialog.
*/
val alwaysExpand: Boolean = false
) : EmbeddingRule() {
/**
* Read-only filters used to choose when to apply this rule.
*/
val filters: Set<ActivityFilter> = filters.toSet()
/**
* Creates a new immutable instance by adding a filter to the set.
*/
internal operator fun plus(filter: ActivityFilter): ActivityRule {
val newSet = mutableSetOf<ActivityFilter>()
newSet.addAll(filters)
newSet.add(filter)
return ActivityRule(
newSet.toSet(),
alwaysExpand
)
}
override fun equals(other: Any?): Boolean {
if (this === other) return true
if (other !is ActivityRule) return false
if (filters != other.filters) return false
if (alwaysExpand != other.alwaysExpand) return false
return true
}
override fun hashCode(): Int {
var result = filters.hashCode()
result = 31 * result + alwaysExpand.hashCode()
return result
}
}