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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
package org.mozilla.tv.firefox.hint
import android.animation.Animator
import android.animation.AnimatorListenerAdapter
import android.text.Spannable
import android.text.SpannableStringBuilder
import android.text.style.ImageSpan
import android.view.View
import androidx.core.view.isVisible
import androidx.interpolator.view.animation.FastOutSlowInInterpolator
import io.reactivex.disposables.Disposable
import kotlinx.android.synthetic.main.hint_bar.view.hintBarText
import mozilla.components.support.ktx.android.util.dpToPx
private const val IMAGE = "\$IMAGE"
private const val IMAGE_SIZE_DP = 24
/**
* Simple object that allows different consumers of [HintViewModel]s share binding code
*/
object HintBinder {
fun bindHintsToView(vm: HintViewModel, hintContainer: View, animate: Boolean): List<Disposable> {
val displayedDisposable = if (!animate) {
vm.isDisplayed
.doOnDispose { hintContainer.isVisible = false }
.subscribe { hintContainer.isVisible = it }
} else {
vm.isDisplayed
.doOnDispose { hintContainer.isVisible = false }
.doOnSubscribe {
hintContainer.animate()
.setDuration(0)
.translationY(hintContainer.height.toFloat())
.start()
}
.subscribe { shouldDisplay ->
val translationY = when (shouldDisplay) {
true -> 0f
false -> hintContainer.height.toFloat()
}
// Be very careful when changing this code; the hint bar experiment stays
// disabled when A/B testing is disabled (e.g. like early returning from
// this binding method if [ExperimentsProvider.shouldShowHintBar]
// returns false).
hintContainer.animate()
.setListener(object : AnimatorListenerAdapter() {
override fun onAnimationStart(animation: Animator?) {
if (shouldDisplay) hintContainer.isVisible = shouldDisplay
}
override fun onAnimationEnd(animation: Animator?) {
if (!shouldDisplay) hintContainer.isVisible = shouldDisplay
}
})
.setDuration(250)
.setInterpolator(FastOutSlowInInterpolator())
.translationY(translationY)
.start()
}
}
val hintDisposable = vm.hints.subscribe {
val hint = it.firstOrNull() ?: return@subscribe // For the first version, only one hint is shown
val resources = hintContainer.context.resources
val styledText = if (!hint.text.contains(IMAGE)) {
hint.text
} else {
val spannableBuilder = SpannableStringBuilder(hint.text)
val imageStart = hint.text.indexOf(IMAGE)
val imageEnd = imageStart + IMAGE.length
val image = hintContainer.context.getDrawable(hint.icon)!!
val imageSize = IMAGE_SIZE_DP.dpToPx(resources.displayMetrics)
image.setBounds(0, 0, imageSize, imageSize)
val imageSpan = ImageSpan(image, ImageSpan.ALIGN_BOTTOM)
spannableBuilder.setSpan(imageSpan, imageStart, imageEnd, Spannable.SPAN_INCLUSIVE_EXCLUSIVE)
spannableBuilder
}
hintContainer.hintBarText.text = styledText
hintContainer.hintBarText.contentDescription = hint.contentDescription
}
return listOf(displayedDisposable, hintDisposable)
}
}