129 lines
4.8 KiB
Kotlin
129 lines
4.8 KiB
Kotlin
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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package org.mozilla.fenix.quickactionsheet
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import android.content.Context
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import android.os.Bundle
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import android.util.AttributeSet
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import android.view.View
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import android.view.accessibility.AccessibilityEvent
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import android.view.accessibility.AccessibilityNodeInfo
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import androidx.constraintlayout.widget.ConstraintLayout
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import androidx.core.widget.NestedScrollView
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import com.google.android.material.bottomsheet.BottomSheetBehavior
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import kotlinx.android.synthetic.main.layout_quick_action_sheet.view.*
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import kotlinx.coroutines.Dispatchers
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import kotlinx.coroutines.MainScope
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import kotlinx.coroutines.cancel
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import kotlinx.coroutines.delay
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import kotlinx.coroutines.launch
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import org.mozilla.fenix.R
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import org.mozilla.fenix.ext.settings
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const val POSITION_SNAP_BUFFER = 1f
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class QuickActionSheet @JvmOverloads constructor(
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context: Context,
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attrs: AttributeSet? = null,
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defStyle: Int = 0,
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defStyleRes: Int = 0
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) : ConstraintLayout(context, attrs, defStyle, defStyleRes) {
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private val scope = MainScope()
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private lateinit var quickActionSheetBehavior: QuickActionSheetBehavior<NestedScrollView>
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init {
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inflate(context, R.layout.layout_quick_action_sheet, this)
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}
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override fun onAttachedToWindow() {
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super.onAttachedToWindow()
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quickActionSheetBehavior =
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QuickActionSheetBehavior.from(quick_action_sheet.parent as NestedScrollView)
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quickActionSheetBehavior.isHideable = false
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setupHandle()
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}
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override fun onDetachedFromWindow() {
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super.onDetachedFromWindow()
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scope.cancel()
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}
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private fun setupHandle() {
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quick_action_sheet_handle.setOnClickListener {
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quickActionSheetBehavior.state = when (quickActionSheetBehavior.state) {
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BottomSheetBehavior.STATE_EXPANDED -> BottomSheetBehavior.STATE_COLLAPSED
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else -> BottomSheetBehavior.STATE_EXPANDED
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}
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}
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quick_action_sheet_handle.setAccessibilityDelegate(HandleAccessibilityDelegate(quickActionSheetBehavior))
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}
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fun bounceSheet() {
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context.settings().incrementAutomaticBounceQuickActionSheetCount()
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scope.launch(Dispatchers.Main) {
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delay(BOUNCE_ANIMATION_DELAY_LENGTH)
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quickActionSheetBehavior.state = BottomSheetBehavior.STATE_EXPANDED
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delay(BOUNCE_ANIMATION_PAUSE_LENGTH)
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quickActionSheetBehavior.state = BottomSheetBehavior.STATE_COLLAPSED
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}
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}
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class HandleAccessibilityDelegate(
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private val quickActionSheetBehavior: QuickActionSheetBehavior<NestedScrollView>
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) : View.AccessibilityDelegate() {
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private var finalState = BottomSheetBehavior.STATE_COLLAPSED
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get() = when (quickActionSheetBehavior.state) {
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BottomSheetBehavior.STATE_EXPANDED,
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BottomSheetBehavior.STATE_HIDDEN,
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BottomSheetBehavior.STATE_COLLAPSED -> {
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quickActionSheetBehavior.state
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}
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else -> field
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}
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set(value) {
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field = value
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quickActionSheetBehavior.state = value
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}
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override fun performAccessibilityAction(host: View?, action: Int, args: Bundle?): Boolean {
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finalState = when (action) {
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AccessibilityNodeInfo.ACTION_CLICK ->
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when (quickActionSheetBehavior.state) {
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BottomSheetBehavior.STATE_EXPANDED -> BottomSheetBehavior.STATE_COLLAPSED
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else -> BottomSheetBehavior.STATE_EXPANDED
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}
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AccessibilityNodeInfo.ACTION_COLLAPSE ->
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BottomSheetBehavior.STATE_COLLAPSED
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AccessibilityNodeInfo.ACTION_EXPAND ->
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BottomSheetBehavior.STATE_EXPANDED
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else -> return super.performAccessibilityAction(host, action, args)
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}
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host?.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_CLICKED)
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return true
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}
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override fun onInitializeAccessibilityNodeInfo(host: View?, info: AccessibilityNodeInfo?) {
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super.onInitializeAccessibilityNodeInfo(host, info)
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info?.addAction(
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when (finalState) {
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BottomSheetBehavior.STATE_COLLAPSED,
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BottomSheetBehavior.STATE_HIDDEN -> AccessibilityNodeInfo.AccessibilityAction.ACTION_EXPAND
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else -> AccessibilityNodeInfo.AccessibilityAction.ACTION_COLLAPSE
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}
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)
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}
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}
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companion object {
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const val BOUNCE_ANIMATION_DELAY_LENGTH = 1000L
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const val BOUNCE_ANIMATION_PAUSE_LENGTH = 2000L
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}
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}
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