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/*
* Copyright (C) 2023 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.customization.picker.clock.ui.binder
import android.content.Context
import android.os.Bundle
import android.view.View
import android.view.accessibility.AccessibilityNodeInfo
import com.android.wallpaper.R
class CarouselAccessibilityDelegate(
private val context: Context,
private val scrollForwardCallback: () -> Unit,
private val scrollBackwardCallback: () -> Unit
) : View.AccessibilityDelegate() {
var contentDescriptionOfSelectedClock = ""
private val ACTION_SCROLL_BACKWARD = R.id.action_scroll_backward
private val ACTION_SCROLL_FORWARD = R.id.action_scroll_forward
override fun onInitializeAccessibilityNodeInfo(host: View, info: AccessibilityNodeInfo) {
super.onInitializeAccessibilityNodeInfo(host, info)
info.isScrollable = true
info.addAction(
AccessibilityNodeInfo.AccessibilityAction(
ACTION_SCROLL_FORWARD,
context.getString(R.string.scroll_forward_and_select)
)
)
info.addAction(
AccessibilityNodeInfo.AccessibilityAction(
ACTION_SCROLL_BACKWARD,
context.getString(R.string.scroll_backward_and_select)
)
)
info.addAction(AccessibilityNodeInfo.AccessibilityAction.ACTION_ACCESSIBILITY_FOCUS)
// We need to specifically set the content description since for some reason the talkback
// service does not go to children of the clock carousel in the view hierarchy
info.contentDescription = contentDescriptionOfSelectedClock
}
override fun performAccessibilityAction(host: View, action: Int, args: Bundle?): Boolean {
when (action) {
ACTION_SCROLL_BACKWARD -> {
scrollBackwardCallback.invoke()
return true
}
ACTION_SCROLL_FORWARD -> {
scrollForwardCallback.invoke()
return true
}
}
return super.performAccessibilityAction(host, action, args)
}
}
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