android: add local search to cached games

app/src/main/java/com/raofflineproxy/ui/CachedGamesFragment.kt

@@ -41,6 +41,10 @@ class CachedGamesFragment : Fragment() {
     private val collapsedConsoleIds = mutableSetOf<Int>()
     private var currentGames: List<CachedGame> = emptyList()
     private var gamesAdapter: CachedGamesAdapter? = null
+    private var headerAdapter: CachedGamesHeaderAdapter? = null
+    private var headerState = CachedGamesHeaderAdapter.HeaderState()
+    private var searchOpen = false
+    private var searchQuery = ""
     private var queueDialog: AlertDialog? = null
 
     private val romFolderPickerLauncher = registerForActivityResult(
@@ -65,7 +69,7 @@ class CachedGamesFragment : Fragment() {
             onHeaderClick = { consoleId ->
                 if (!collapsedConsoleIds.remove(consoleId)) collapsedConsoleIds.add(consoleId)
                 saveCollapsedState()
-                gamesAdapter?.submitList(buildGroupedList(currentGames, collapsedConsoleIds))
+                submitGames()
             },
             onDelete = viewModel::deleteCachedGame,
             onDeleteConsole = { header ->
@@ -108,8 +112,20 @@ class CachedGamesFragment : Fragment() {
                     .create()
                     .also { it.setCanceledOnTouchOutside(false) }
                     .show()
+            },
+            onSearchChanged = { query ->
+                searchQuery = query
+                publishHeaderState(headerState)
+                submitGames()
+            },
+            onSearchToggled = { open ->
+                searchOpen = open
+                if (!open) searchQuery = ""
+                publishHeaderState(headerState)
+                submitGames()
             }
         )
+        this.headerAdapter = headerAdapter
 
         view.findViewById<RecyclerView>(R.id.rv_cached_games).apply {
             layoutManager = LinearLayoutManager(requireContext())
@@ -121,7 +137,7 @@ class CachedGamesFragment : Fragment() {
         viewLifecycleOwner.lifecycleScope.launch {
             viewModel.cachedGames.collect { games ->
                 currentGames = games
-                gamesAdapter?.submitList(buildGroupedList(games, collapsedConsoleIds))
+                submitGames()
             }
         }
 
@@ -146,7 +162,7 @@ class CachedGamesFragment : Fragment() {
                     )
                     else -> queuedStatusText(state)
                 }
-                headerAdapter.update(
+                publishHeaderState(
                     CachedGamesHeaderAdapter.HeaderState(
                         smartCacheEnabled = smartCacheEnabled,
                         showSmartCache = showSmartCache,
@@ -166,6 +182,16 @@ class CachedGamesFragment : Fragment() {
         queueDialog?.dismiss()
         queueDialog = null
         gamesAdapter = null
+        headerAdapter = null
+    }
+
+    private fun publishHeaderState(base: CachedGamesHeaderAdapter.HeaderState) {
+        headerState = base.copy(searchOpen = searchOpen, searchQuery = searchQuery)
+        headerAdapter?.update(headerState)
+    }
+
+    private fun submitGames() {
+        gamesAdapter?.submitList(buildGroupedList(currentGames, collapsedConsoleIds, searchQuery))
     }
 
     private fun updateQueueDialog(estimate: QueueEstimate?) {
@@ -289,6 +315,17 @@ class CachedGamesFragment : Fragment() {
 }
 
 private fun buildGroupedList(
+    games: List<CachedGame>,
+    collapsedConsoleIds: Set<Int>,
+    query: String = ""
+): List<CachedGameListItem> {
+    val searching = query.isNotBlank()
+    val visibleGames = if (searching) games.filter { it.title.contains(query.trim(), ignoreCase = true) } else games
+    val collapsed = if (searching) emptySet() else collapsedConsoleIds
+    return groupByConsole(visibleGames, collapsed)
+}
+
+private fun groupByConsole(
     games: List<CachedGame>,
     collapsedConsoleIds: Set<Int>
 ): List<CachedGameListItem> {

app/src/main/java/com/raofflineproxy/ui/CachedGamesHeaderAdapter.kt

@@ -2,7 +2,12 @@ package com.raofflineproxy.ui
 
 import android.view.LayoutInflater
 import android.view.View
+import android.text.Editable
+import android.text.TextWatcher
 import android.view.ViewGroup
+import android.view.inputmethod.EditorInfo
+import android.view.inputmethod.InputMethodManager
+import android.widget.EditText
 import android.widget.TextView
 import androidx.recyclerview.widget.RecyclerView
 import com.google.android.material.button.MaterialButton
@@ -11,7 +16,9 @@ import com.raofflineproxy.R
 class CachedGamesHeaderAdapter(
     private val onSmartCache: () -> Unit,
     private val onScan: () -> Unit,
-    private val onClear: () -> Unit
+    private val onClear: () -> Unit,
+    private val onSearchChanged: (String) -> Unit,
+    private val onSearchToggled: (Boolean) -> Unit
 ) : RecyclerView.Adapter<CachedGamesHeaderAdapter.ViewHolder>() {
 
     private var state: HeaderState = HeaderState()
@@ -22,11 +29,15 @@ class CachedGamesHeaderAdapter(
         val scanEnabled: Boolean = false,
         val clearEnabled: Boolean = true,
         val showNoCachedGames: Boolean = false,
-        val statusText: String? = null
+        val statusText: String? = null,
+        val searchOpen: Boolean = false,
+        val searchQuery: String = ""
     )
 
     inner class ViewHolder(view: View) : RecyclerView.ViewHolder(view) {
         val btnSmartCache: MaterialButton = view.findViewById(R.id.btn_smart_cache)
+        val btnSearch: MaterialButton = view.findViewById(R.id.btn_search)
+        val etSearch: EditText = view.findViewById(R.id.et_search)
         val btnScan: MaterialButton = view.findViewById(R.id.btn_scan_roms)
         val btnClear: MaterialButton = view.findViewById(R.id.btn_clear_cache)
         val tvScanHint: TextView = view.findViewById(R.id.tv_scan_hint)
@@ -36,9 +47,42 @@ class CachedGamesHeaderAdapter(
             btnSmartCache.setOnClickListener { onSmartCache() }
             btnScan.setOnClickListener { onScan() }
             btnClear.setOnClickListener { onClear() }
+            btnSearch.setOnClickListener { onSearchToggled(!state.searchOpen) }
+            etSearch.addTextChangedListener(object : TextWatcher {
+                override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) = Unit
+                override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) = Unit
+                override fun afterTextChanged(s: Editable?) {
+                    val query = s?.toString().orEmpty()
+                    if (query != state.searchQuery) onSearchChanged(query)
+                }
+            })
+            etSearch.setOnEditorActionListener { v, actionId, _ ->
+                if (actionId != EditorInfo.IME_ACTION_SEARCH) return@setOnEditorActionListener false
+                hideKeyboard(v)
+                true
+            }
+        }
+
+        private fun hideKeyboard(target: View) {
+            val imm = target.context.getSystemService(InputMethodManager::class.java)
+            imm?.hideSoftInputFromWindow(target.windowToken, 0)
+        }
+
+        private fun bindSearch(s: HeaderState) {
+            val wasOpen = etSearch.visibility == View.VISIBLE
+            etSearch.visibility = if (s.searchOpen) View.VISIBLE else View.GONE
+            btnSearch.setIconResource(if (s.searchOpen) R.drawable.ic_close else R.drawable.ic_search)
+            if (etSearch.text.toString() != s.searchQuery) etSearch.setText(s.searchQuery)
+            if (s.searchOpen && !wasOpen) {
+                etSearch.requestFocus()
+                etSearch.context.getSystemService(InputMethodManager::class.java)
+                    ?.showSoftInput(etSearch, InputMethodManager.SHOW_IMPLICIT)
+            }
+            if (!s.searchOpen && wasOpen) hideKeyboard(etSearch)
         }
 
         fun bind(s: HeaderState) {
+            bindSearch(s)
             btnSmartCache.visibility = if (s.showSmartCache) View.VISIBLE else View.GONE
             btnSmartCache.isEnabled = s.smartCacheEnabled
             btnSmartCache.alpha = if (s.smartCacheEnabled) 1f else 0.38f
@@ -50,7 +94,8 @@ class CachedGamesHeaderAdapter(
             btnClear.alpha = if (s.clearEnabled) 1f else 0.38f
 
             tvScanHint.text = s.statusText
-            tvScanHint.visibility = if (s.statusText.isNullOrEmpty()) View.GONE else View.VISIBLE
+            tvScanHint.visibility =
+                if (s.statusText.isNullOrEmpty() || s.searchOpen) View.GONE else View.VISIBLE
 
             tvNoCachedGames.visibility = if (s.showNoCachedGames) View.VISIBLE else View.GONE
         }

app/src/main/res/drawable/ic_close.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="?attr/colorOnSurface">
+  <path
+      android:fillColor="@android:color/white"
+      android:pathData="M19,6.41L17.59,5 12,10.59 6.41,5 5,6.41 10.59,12 5,17.59 6.41,19 12,13.41 17.59,19 19,17.59 13.41,12z"/>
+</vector>

app/src/main/res/drawable/ic_search.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="?attr/colorOnSurface">
+  <path
+      android:fillColor="@android:color/white"
+      android:pathData="M15.5,14h-0.79l-0.28,-0.27C15.41,12.59 16,11.11 16,9.5 16,5.91 13.09,3 9.5,3S3,5.91 3,9.5 5.91,16 9.5,16c1.61,0 3.09,-0.59 4.23,-1.57l0.27,0.28v0.79l5,4.99L20.49,19l-4.99,-5zM9.5,14C7.01,14 5,11.99 5,9.5S7.01,5 9.5,5 14,7.01 14,9.5 11.99,14 9.5,14z"/>
+</vector>

app/src/main/res/layout/item_cached_games_header.xml

@@ -29,8 +29,33 @@
             android:textSize="12sp"
             android:visibility="gone" />
 
+        <EditText
+            android:id="@+id/et_search"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:layout_marginEnd="8dp"
+            android:hint="@string/cached_games_search_hint"
+            android:imeOptions="actionSearch"
+            android:importantForAutofill="no"
+            android:inputType="text"
+            android:maxLines="1"
+            android:textSize="14sp"
+            android:visibility="gone" />
+
+        <com.google.android.material.button.MaterialButton
+            android:id="@+id/btn_search"
+            style="@style/Widget.RAOfflineProxy.Button.Icon"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:contentDescription="@string/cached_games_search"
+            android:tooltipText="@string/cached_games_search"
+            app:icon="@drawable/ic_search"
+            app:iconTint="?attr/colorOnSurface" />
+
         <com.google.android.material.button.MaterialButton
             android:id="@+id/btn_smart_cache"
+            android:layout_marginStart="8dp"
             style="@style/Widget.RAOfflineProxy.Button.Icon"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"

app/src/main/res/values/strings.xml

@@ -343,6 +343,8 @@
     <string name="queue_eta_minutes">%1$d minutes</string>
     <string name="queue_eta_hours">%1$d h %2$d min</string>
     <string name="cached_games_smart_cache">Start Smart Cache</string>
+    <string name="cached_games_search">Search games</string>
+    <string name="cached_games_search_hint">Search games</string>
     <string name="cached_games_scan_folder">Scan ROM folder</string>
     <string name="cached_games_clear_all">Clear all cache</string>
     <string name="cached_games_empty">No games cached yet. Add a ROM or scan your ROM folder while online.</string>