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/*
* Copyright (C) 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 com.android.systemui.controls.management
import android.text.TextUtils
import android.util.ArrayMap
import com.android.systemui.controls.ControlStatus
import com.android.systemui.controls.controller.ControlInfo
/**
* This model is used to show controls separated by zones.
*
* The model will sort the controls and zones in the following manner:
* * The zones will be sorted in a first seen basis
* * The controls in each zone will be sorted in a first seen basis.
*
* The controls passed should belong to the same structure, as an instance of this model will be
* created for each structure.
*
* The list of favorite ids can contain ids for controls not passed to this model. Those will be
* filtered out.
*
* @property controls List of controls as returned by loading
* @property initialFavoriteIds sorted ids of favorite controls.
* @property noZoneString text to use as header for all controls that have blank or `null` zone.
* @property controlsModelCallback callback to notify that favorites have changed for the first time
*/
class AllModel(
private val controls: List<ControlStatus>,
initialFavoriteIds: List<String>,
private val emptyZoneString: CharSequence,
private val controlsModelCallback: ControlsModel.ControlsModelCallback
) : ControlsModel {
private var modified = false
override val moveHelper = null
override val favorites: List<ControlInfo>
get() = favoriteIds.mapNotNull { id ->
val control = controls.firstOrNull { it.control.controlId == id }?.control
control?.let {
ControlInfo.fromControl(it)
}
}
private val favoriteIds = run {
val ids = controls.mapTo(HashSet()) { it.control.controlId }
initialFavoriteIds.filter { it in ids }.toMutableList()
}
override val elements: List<ElementWrapper> = createWrappers(controls)
override fun changeFavoriteStatus(controlId: String, favorite: Boolean) {
val toChange = elements.firstOrNull {
it is ControlStatusWrapper && it.controlStatus.control.controlId == controlId
} as ControlStatusWrapper?
if (favorite == toChange?.controlStatus?.favorite) return
val changed: Boolean = if (favorite) {
favoriteIds.add(controlId)
} else {
favoriteIds.remove(controlId)
}
if (changed && !modified) {
modified = true
controlsModelCallback.onFirstChange()
}
toChange?.let {
it.controlStatus.favorite = favorite
}
}
private fun createWrappers(list: List<ControlStatus>): List<ElementWrapper> {
val map = list.groupByTo(OrderedMap(ArrayMap<CharSequence, MutableList<ControlStatus>>())) {
it.control.zone ?: ""
}
val output = mutableListOf<ElementWrapper>()
var emptyZoneValues: Sequence<ControlStatusWrapper>? = null
for (zoneName in map.orderedKeys) {
val values = map.getValue(zoneName).asSequence().map { ControlStatusWrapper(it) }
if (TextUtils.isEmpty(zoneName)) {
emptyZoneValues = values
} else {
output.add(ZoneNameWrapper(zoneName))
output.addAll(values)
}
}
// Add controls with empty zone at the end
if (emptyZoneValues != null) {
if (map.size != 1) {
output.add(ZoneNameWrapper(emptyZoneString))
}
output.addAll(emptyZoneValues)
}
return output
}
private class OrderedMap<K, V>(private val map: MutableMap<K, V>) : MutableMap<K, V> by map {
val orderedKeys = mutableListOf<K>()
override fun put(key: K, value: V): V? {
if (key !in map) {
orderedKeys.add(key)
}
return map.put(key, value)
}
override fun clear() {
orderedKeys.clear()
map.clear()
}
override fun remove(key: K): V? {
val removed = map.remove(key)
if (removed != null) {
orderedKeys.remove(key)
}
return removed
}
}
}
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