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// SPDX-FileCopyrightText: 2023 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
package org.yuzu.yuzu_emu.ui
import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.activity.OnBackPressedCallback
import androidx.appcompat.app.AppCompatActivity
import androidx.core.view.ViewCompat
import androidx.core.view.WindowInsetsCompat
import androidx.core.view.updatePadding
import androidx.core.widget.doOnTextChanged
import androidx.fragment.app.Fragment
import androidx.fragment.app.activityViewModels
import com.google.android.material.color.MaterialColors
import com.google.android.material.search.SearchView
import com.google.android.material.search.SearchView.TransitionState
import info.debatty.java.stringsimilarity.Jaccard
import org.yuzu.yuzu_emu.R
import org.yuzu.yuzu_emu.adapters.GameAdapter
import org.yuzu.yuzu_emu.databinding.FragmentGamesBinding
import org.yuzu.yuzu_emu.layout.AutofitGridLayoutManager
import org.yuzu.yuzu_emu.model.Game
import org.yuzu.yuzu_emu.model.GamesViewModel
import org.yuzu.yuzu_emu.model.HomeViewModel
import java.util.Locale
class GamesFragment : Fragment() {
private var _binding: FragmentGamesBinding? = null
private val binding get() = _binding!!
private val gamesViewModel: GamesViewModel by activityViewModels()
private val homeViewModel: HomeViewModel by activityViewModels()
override fun onCreateView(
inflater: LayoutInflater,
container: ViewGroup?,
savedInstanceState: Bundle?
): View {
_binding = FragmentGamesBinding.inflate(inflater)
return binding.root
}
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
// Use custom back navigation so the user doesn't back out of the app when trying to back
// out of the search view
requireActivity().onBackPressedDispatcher.addCallback(
viewLifecycleOwner,
object : OnBackPressedCallback(true) {
override fun handleOnBackPressed() {
if (binding.searchView.currentTransitionState == TransitionState.SHOWN) {
binding.searchView.hide()
} else {
requireActivity().finish()
}
}
})
binding.gridGames.apply {
layoutManager = AutofitGridLayoutManager(
requireContext(),
requireContext().resources.getDimensionPixelSize(R.dimen.card_width)
)
adapter = GameAdapter(requireActivity() as AppCompatActivity)
}
setUpSearch()
// Add swipe down to refresh gesture
binding.swipeRefresh.setOnRefreshListener {
gamesViewModel.reloadGames(false)
}
// Set theme color to the refresh animation's background
binding.swipeRefresh.setProgressBackgroundColorSchemeColor(
MaterialColors.getColor(binding.swipeRefresh, R.attr.colorPrimary)
)
binding.swipeRefresh.setColorSchemeColors(
MaterialColors.getColor(binding.swipeRefresh, R.attr.colorOnPrimary)
)
// Watch for when we get updates to any of our games lists
gamesViewModel.isReloading.observe(viewLifecycleOwner) { isReloading ->
binding.swipeRefresh.isRefreshing = isReloading
if (!isReloading) {
if (gamesViewModel.games.value!!.isEmpty()) {
binding.noticeText.visibility = View.VISIBLE
} else {
binding.noticeText.visibility = View.GONE
}
}
}
gamesViewModel.games.observe(viewLifecycleOwner) {
(binding.gridGames.adapter as GameAdapter).submitList(it)
}
gamesViewModel.searchedGames.observe(viewLifecycleOwner) {
(binding.gridSearch.adapter as GameAdapter).submitList(it)
}
gamesViewModel.shouldSwapData.observe(viewLifecycleOwner) { shouldSwapData ->
if (shouldSwapData) {
(binding.gridGames.adapter as GameAdapter).submitList(gamesViewModel.games.value)
gamesViewModel.setShouldSwapData(false)
}
}
// Hide bottom navigation and FAB when using the search view
binding.searchView.addTransitionListener { _: SearchView, _: TransitionState, newState: TransitionState ->
when (newState) {
TransitionState.SHOWING,
TransitionState.SHOWN -> {
(binding.gridSearch.adapter as GameAdapter).submitList(emptyList())
searchShown()
}
TransitionState.HIDDEN,
TransitionState.HIDING -> {
gamesViewModel.setSearchedGames(emptyList())
searchHidden()
}
}
}
// Ensure that bottom navigation or FAB don't appear upon recreation
val searchState = binding.searchView.currentTransitionState
if (searchState == TransitionState.SHOWN) {
searchShown()
} else if (searchState == TransitionState.HIDDEN) {
searchHidden()
}
setInsets()
// Make sure the loading indicator appears even if the layout is told to refresh before being fully drawn
binding.swipeRefresh.post {
binding.swipeRefresh.isRefreshing = gamesViewModel.isReloading.value!!
}
}
override fun onDestroyView() {
super.onDestroyView()
_binding = null
}
private fun searchShown() = homeViewModel.setNavigationVisible(false)
private fun searchHidden() = homeViewModel.setNavigationVisible(true)
private inner class ScoredGame(val score: Double, val item: Game)
private fun setUpSearch() {
binding.gridSearch.apply {
layoutManager = AutofitGridLayoutManager(
requireContext(),
requireContext().resources.getDimensionPixelSize(R.dimen.card_width)
)
adapter = GameAdapter(requireActivity() as AppCompatActivity)
}
binding.searchView.editText.doOnTextChanged { text: CharSequence?, _: Int, _: Int, _: Int ->
val searchTerm = text.toString().lowercase(Locale.getDefault())
val searchAlgorithm = Jaccard(2)
val sortedList: List<Game> = gamesViewModel.games.value!!.mapNotNull { game ->
val title = game.title.lowercase(Locale.getDefault())
val score = searchAlgorithm.similarity(searchTerm, title)
if (score > 0.03) {
ScoredGame(score, game)
} else {
null
}
}.sortedByDescending { it.score }.map { it.item }
gamesViewModel.setSearchedGames(sortedList)
}
}
private fun setInsets() =
ViewCompat.setOnApplyWindowInsetsListener(binding.gridGames) { view: View, windowInsets: WindowInsetsCompat ->
val insets = windowInsets.getInsets(WindowInsetsCompat.Type.systemBars())
val extraListSpacing = resources.getDimensionPixelSize(R.dimen.spacing_med)
view.setPadding(
insets.left,
insets.top + resources.getDimensionPixelSize(R.dimen.spacing_search),
insets.right,
insets.bottom + resources.getDimensionPixelSize(R.dimen.spacing_navigation) + extraListSpacing
)
binding.gridSearch.updatePadding(
left = insets.left,
top = extraListSpacing,
right = insets.right,
bottom = insets.bottom + extraListSpacing
)
binding.swipeRefresh.setSlingshotDistance(
resources.getDimensionPixelSize(R.dimen.spacing_refresh_slingshot)
)
binding.swipeRefresh.setProgressViewOffset(
false,
insets.top + resources.getDimensionPixelSize(R.dimen.spacing_refresh_start),
insets.top + resources.getDimensionPixelSize(R.dimen.spacing_refresh_end)
)
windowInsets
}
}
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