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/*
* Copyright (C) 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 com.android.wallpaper.widget
import android.annotation.IntDef
import android.content.Context
import android.transition.AutoTransition
import android.transition.TransitionManager
import android.util.AttributeSet
import android.view.LayoutInflater
import android.view.ViewGroup
import android.widget.FrameLayout
import androidx.appcompat.content.res.AppCompatResources
import com.android.wallpaper.R
import com.android.wallpaper.util.SizeCalculator
import com.android.wallpaper.widget.floatingsheetcontent.FloatingSheetContent
import com.google.android.material.bottomsheet.BottomSheetBehavior
import com.google.android.material.bottomsheet.BottomSheetBehavior.BottomSheetCallback
import java.util.function.Consumer
/** A `ViewGroup` which provides the specific actions for the user to interact with. */
class FloatingSheet(context: Context, attrs: AttributeSet?) : FrameLayout(context, attrs) {
companion object {
@Target(AnnotationTarget.VALUE_PARAMETER, AnnotationTarget.TYPE)
@IntDef(CUSTOMIZE, INFORMATION, EFFECTS)
@Retention(AnnotationRetention.SOURCE)
annotation class FloatingSheetContentType
const val CUSTOMIZE = 0
const val INFORMATION = 1
const val EFFECTS = 2
}
private val floatingSheetView: ViewGroup
private val floatingSheetContainer: ViewGroup
private val floatingSheetBehavior: BottomSheetBehavior<ViewGroup>
private val contentViewMap:
MutableMap<@FloatingSheetContentType Int, FloatingSheetContent<*>?> =
HashMap()
// The system "short" animation time duration, in milliseconds. This
// duration is ideal for subtle animations or animations that occur
// very frequently.
private val shortAnimTimeMillis: Long
init {
LayoutInflater.from(context).inflate(R.layout.floating_sheet, this, true)
floatingSheetView = requireViewById(R.id.floating_sheet_content)
SizeCalculator.adjustBackgroundCornerRadius(floatingSheetView)
setColor(context)
floatingSheetContainer = requireViewById(R.id.floating_sheet_container)
floatingSheetBehavior = BottomSheetBehavior.from(floatingSheetContainer)
floatingSheetBehavior.state = BottomSheetBehavior.STATE_HIDDEN
shortAnimTimeMillis = resources.getInteger(android.R.integer.config_shortAnimTime).toLong()
}
/**
* Binds the `floatingSheetContent` with an id that can be used identify and switch between
* floating sheet content
*
* @param floatingSheetContent the content object with view being added to the floating sheet
*/
fun putFloatingSheetContent(
@FloatingSheetContentType type: Int,
floatingSheetContent: FloatingSheetContent<*>
) {
floatingSheetContent.initView()
contentViewMap[type] = floatingSheetContent
floatingSheetView.addView(floatingSheetContent.contentView)
}
/** Dynamic update color with `Context`. */
fun setColor(context: Context) {
// Set floating sheet background.
floatingSheetView.background =
AppCompatResources.getDrawable(context, R.drawable.floating_sheet_background)
if (floatingSheetView.childCount > 0) {
// Update the bottom sheet content view if any.
floatingSheetView.removeAllViews()
contentViewMap.values.forEach(
Consumer { floatingSheetContent: FloatingSheetContent<*>? ->
floatingSheetContent?.let {
it.recreateView()
floatingSheetView.addView(it.contentView)
}
}
)
}
}
/** Returns `true` if the state of bottom sheet is collapsed. */
val isFloatingSheetCollapsed: Boolean
get() = floatingSheetBehavior.state == BottomSheetBehavior.STATE_HIDDEN
/** Expands [FloatingSheet]. */
fun expand() {
floatingSheetBehavior.state = BottomSheetBehavior.STATE_EXPANDED
}
/** Collapses [FloatingSheet]. */
fun collapse() {
floatingSheetBehavior.state = BottomSheetBehavior.STATE_HIDDEN
endContentViewAnimation()
}
/**
* Updates content view of [FloatingSheet] with transition animation
*
* @param type the integer or enum used to identify the content view
*/
fun updateContentViewWithAnimation(@FloatingSheetContentType type: Int) {
val transition = AutoTransition()
transition.duration = shortAnimTimeMillis
/**
* This line records changes you make to its views and applies a transition that animates
* the changes when the system redraws the user interface
*/
TransitionManager.beginDelayedTransition(floatingSheetContainer, transition)
updateContentView(type)
}
fun endContentViewAnimation() {
TransitionManager.endTransitions(floatingSheetContainer)
}
/**
* Updates content view of [FloatingSheet]
*
* @param type the integer or enum used to identify the content view
*/
fun updateContentView(@FloatingSheetContentType type: Int) {
contentViewMap.forEach { (i: Int, content: FloatingSheetContent<*>?) ->
content?.setVisibility(i == type)
}
}
/**
* Adds Floating Sheet Callback to connected [BottomSheetBehavior].
*
* @param callback the callback for floating sheet state changes, has to be in the type of
* [BottomSheetBehavior.BottomSheetCallback] since the floating sheet behavior is currently
* based on [BottomSheetBehavior]
*/
fun addFloatingSheetCallback(callback: BottomSheetCallback?) {
floatingSheetBehavior.addBottomSheetCallback(callback!!)
}
}