Implement search feature in add-ons page

app/src/main/java/org/mozilla/fenix/addons/AddonsManagementFragment.kt

@@ -6,9 +6,10 @@ package org.mozilla.fenix.addons
 
 import android.content.Context
 import android.os.Bundle
-import android.view.Gravity
-import android.view.View
+import android.view.*
 import android.view.accessibility.AccessibilityEvent
+import android.view.inputmethod.EditorInfo
+import androidx.appcompat.widget.SearchView
 import androidx.core.content.res.ResourcesCompat
 import androidx.core.view.isVisible
 import androidx.fragment.app.Fragment
@@ -23,8 +24,6 @@ import kotlinx.coroutines.Dispatchers.IO
 import kotlinx.coroutines.launch
 import mozilla.components.feature.addons.Addon
 import mozilla.components.feature.addons.AddonManagerException
-import mozilla.components.feature.addons.ui.AddonInstallationDialogFragment
-import mozilla.components.feature.addons.ui.AddonsManagerAdapter
 import mozilla.components.feature.addons.ui.PermissionsDialogFragment
 import mozilla.components.feature.addons.ui.translatedName
 import network.novak.fenix.components.PagedAddonsManagerAdapter
@@ -37,6 +36,7 @@ import org.mozilla.fenix.ext.requireComponents
 import org.mozilla.fenix.ext.settings
 import org.mozilla.fenix.ext.showToolbar
 import org.mozilla.fenix.theme.ThemeManager
+import java.util.Locale
 import java.util.concurrent.CancellationException
 
 /**
@@ -50,12 +50,76 @@ class AddonsManagementFragment : Fragment(R.layout.fragment_add_ons_management)
      */
     private var isInstallationInProgress = false
     private var adapter: PagedAddonsManagerAdapter? = null
+    private var addons: List<Addon>? = null
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        setHasOptionsMenu(true)
+        return super.onCreateView(inflater, container, savedInstanceState)
+    }
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
         bindRecyclerView(view)
     }
 
+    override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
+        inflater.inflate(R.menu.addons_menu, menu)
+        val searchItem = menu.findItem(R.id.search)
+        val searchView: SearchView = searchItem.actionView as SearchView
+        searchView.imeOptions = EditorInfo.IME_ACTION_DONE
+        searchView.queryHint = getString(R.string.addons_search_hint)
+
+        searchView.setOnQueryTextListener(object : SearchView.OnQueryTextListener {
+            override fun onQueryTextSubmit(query: String): Boolean {
+                return searchAddons(query.trim())
+            }
+
+            override fun onQueryTextChange(newText: String): Boolean {
+                return searchAddons(newText.trim())
+            }
+        })
+    }
+
+    private fun searchAddons(addonNameSubStr: String): Boolean {
+        if (adapter == null) {
+            return false
+        }
+
+        val searchedAddons = arrayListOf<Addon>()
+
+        addons?.forEach { addon ->
+            val names = addon.translatableName
+            names["en-US"]?.let { name ->
+                if (name.toLowerCase(Locale.ENGLISH).contains(addonNameSubStr.toLowerCase(Locale.ENGLISH))) {
+                    searchedAddons.add(addon)
+                }
+            }
+        }
+        updateUI(searchedAddons)
+
+        return true
+    }
+
+    private fun updateUI(searchedAddons: List<Addon>) {
+        adapter?.updateAddons(searchedAddons)
+
+        if (searchedAddons.isEmpty()) {
+            view?.let { view ->
+                view.add_ons_empty_message.visibility = View.VISIBLE
+                view.add_ons_list.visibility = View.GONE
+            }
+        } else {
+            view?.let { view ->
+                view.add_ons_empty_message.visibility = View.GONE
+                view.add_ons_list.visibility = View.VISIBLE
+            }
+        }
+    }
+
     override fun onResume() {
         super.onResume()
         showToolbar(getString(R.string.preferences_addons))
@@ -85,14 +149,14 @@ class AddonsManagementFragment : Fragment(R.layout.fragment_add_ons_management)
         val shouldRefresh = adapter != null
         lifecycleScope.launch(IO) {
             try {
-                val addons = requireContext().components.addonManager.getAddons()
+                addons = requireContext().components.addonManager.getAddons()
                 lifecycleScope.launch(Dispatchers.Main) {
                     runIfFragmentIsAttached {
                         if (!shouldRefresh) {
                             adapter = PagedAddonsManagerAdapter(
                                 requireContext().components.addonCollectionProvider,
                                 managementView,
-                                addons,
+                                addons!!,
                                 style = createAddonStyle(requireContext())
                             )
                         }
@@ -102,7 +166,7 @@ class AddonsManagementFragment : Fragment(R.layout.fragment_add_ons_management)
 
                         recyclerView.adapter = adapter
                         if (shouldRefresh) {
-                            adapter?.updateAddons(addons)
+                            adapter?.updateAddons(addons!!)
                         }
                     }
                 }

app/src/main/res/menu/addons_menu.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?><!-- 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
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+    <item
+        android:id="@+id/search"
+        android:icon="@drawable/ic_search"
+        android:title="@string/addons_search_hint"
+        app:iconTint="?primaryText"
+        app:actionViewClass="androidx.appcompat.widget.SearchView"
+        android:contentDescription="@string/addons_search_hint"
+        app:showAsAction="ifRoom|collapseActionView" />
+</menu>

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

@@ -324,6 +324,8 @@
     <string name="preferences_external_download_manager">External download manager</string>
     <!-- Preference for add_ons -->
     <string name="preferences_addons">Add-ons</string>
+    <!-- Placeholder text shown in the search bar before a user enters text -->
+    <string name="addons_search_hint">Search add-ons</string>
     <!-- Preference for notifications -->
     <string name="preferences_notifications">Notifications</string>