Words are searchable

app/src/main/java/com/paktalin/vocabularynotebook/OnQueryTextListener.kt

+package com.paktalin.vocabularynotebook
+
+import android.support.v7.widget.RecyclerView
+import android.support.v7.widget.SearchView
+import com.paktalin.vocabularynotebook.firestoreitems.WordItem
+
+class OnQueryTextListener(var recyclerView: RecyclerView) : SearchView.OnQueryTextListener {
+
+    override fun onQueryTextSubmit(query: String): Boolean {
+        (recyclerView.adapter as VocabularyAdapter).filter(query)
+        return true
+    }
+
+    override fun onQueryTextChange(query: String): Boolean {
+        (recyclerView.adapter as VocabularyAdapter).filter(query)
+        return true
+    }
+}
\ No newline at end of file

app/src/main/java/com/paktalin/vocabularynotebook/VocabularyAdapter.kt

@@ -15,13 +15,19 @@ import com.paktalin.vocabularynotebook.ui.EditWordFragment
 import com.paktalin.vocabularynotebook.ui.MainActivity
 import kotlinx.android.synthetic.main.word_item.view.*
 
-class VocabularyAdapter(private val vocabulary: Vocabulary, private val activity: Activity) : RecyclerView.Adapter<VocabularyAdapter.ViewHolder>() {
+class VocabularyAdapter(internal val vocabulary: Vocabulary, private val activity: Activity) : RecyclerView.Adapter<VocabularyAdapter.ViewHolder>() {
 
     private lateinit var recyclerView: RecyclerView
 
     private var sortOrder:Int = 0
     set(value) { field = value; sort() }
 
+    private var wordsCopy:MutableList<WordItem> = mutableListOf()
+
+    init {
+        wordsCopy.addAll(vocabulary.words)
+    }
+
     override fun onAttachedToRecyclerView(recyclerView: RecyclerView) {
         super.onAttachedToRecyclerView(recyclerView)
         this.recyclerView = recyclerView
@@ -98,11 +104,40 @@ class VocabularyAdapter(private val vocabulary: Vocabulary, private val activity
         (activity as MainActivity).supportFragmentManager.beginTransaction().add(container.id, editWordFragment).commit()
     }
 
+    fun replaceAll(words: List<WordItem>) {
+        //vocabulary.words.beginBatchedUpdates()
+        for (i in vocabulary.words.size - 1 downTo 0) {
+            val model = vocabulary.words[i]
+            if (!words.contains(model)) {
+                vocabulary.words.remove(model)
+            }
+        }
+        vocabulary.words.addAll(words)
+        //vocabulary.words.endBatchedUpdates()
+    }
+
     inner class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
         val tvWord: TextView = itemView.word
         val tvTranslation: TextView = itemView.translation
         val layout: LinearLayout = itemView.layout
     }
 
+    fun filter(query: String) {
+        var query = query
+        vocabulary.words.clear()
+        if (query.isEmpty()) {
+            vocabulary.words.addAll(wordsCopy)
+        } else {
+            query = query.toLowerCase()
+            for (wordCopy in wordsCopy) {
+                if (wordCopy.pojo.word.toLowerCase().contains(query) ||
+                        wordCopy.pojo.translation.toLowerCase().contains(query)) {
+                    vocabulary.words.add(wordCopy)
+                }
+            }
+        }
+        notifyDataSetChanged()
+    }
+
     companion object { private val TAG = "VN/" + VocabularyAdapter::class.java.simpleName }
 }
\ No newline at end of file

app/src/main/java/com/paktalin/vocabularynotebook/firestoreitems/Vocabulary.kt

@@ -10,7 +10,7 @@ class Vocabulary(words: MutableList<WordItem>) {
     }
 
     var pojo:Pojo
-    private var words: MutableList<WordItem>
+    var words: MutableList<WordItem>
 
     class Pojo(var title:String?) {
         init {

app/src/main/java/com/paktalin/vocabularynotebook/ui/MainActivity.kt

@@ -11,6 +11,7 @@ import com.paktalin.vocabularynotebook.R
 import kotlinx.android.synthetic.main.activity_main.*
 import android.view.WindowManager
 import android.app.Activity
+import android.app.SearchManager
 import android.support.v4.app.Fragment
 import android.view.Menu
 import android.view.MenuItem
@@ -20,18 +21,16 @@ import android.widget.Toast
 import com.paktalin.vocabularynotebook.VocabularyAdapter
 import com.paktalin.vocabularynotebook.appsetup.ConfiguredFirestore
 import kotlinx.android.synthetic.main.fragment_vocabulary.*
-import android.support.v4.view.MenuItemCompat.getActionView
-import android.content.Context.SEARCH_SERVICE
-import android.support.v4.content.ContextCompat.getSystemService
-import android.app.SearchManager
 import android.content.Context
-import android.widget.SearchView
+import android.support.v7.widget.SearchView
+import com.paktalin.vocabularynotebook.OnQueryTextListener
 
 
 class MainActivity : AppCompatActivity() {
 
     lateinit var vocabularyId: String
     lateinit var vocabularyFragment: VocabularyFragment
+    lateinit var searchView: SearchView
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -43,10 +42,7 @@ class MainActivity : AppCompatActivity() {
 
     override fun onCreateOptionsMenu(menu: Menu?): Boolean {
         menuInflater.inflate(R.menu.options_menu, menu)
-        val searchManager = getSystemService(Context.SEARCH_SERVICE) as SearchManager
-        val searchView = menu!!.findItem(R.id.search).actionView as SearchView
-        searchView.setSearchableInfo(searchManager.getSearchableInfo(componentName))
-        searchView.queryHint = resources.getString(R.string.search_hint)
+        searchView = menu!!.findItem(R.id.search).actionView as SearchView
         return true
     }
 
@@ -94,6 +90,7 @@ class MainActivity : AppCompatActivity() {
                         vocabularyFragment.arguments = arguments
                         supportFragmentManager.beginTransaction().add(R.id.fragment_container, vocabularyFragment)
                                 .commitNowAllowingStateLoss()
+                        searchView.setOnQueryTextListener(OnQueryTextListener(recyclerView))
                     } else {
                         Log.w(TAG, "There's no collection \"vocabularies\"")
                         showToastNoWords() }

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

@@ -6,12 +6,12 @@
         android:title="@string/option_search"
         android:icon="@drawable/ic_search_icon"
         app:showAsAction="ifRoom"
-        app:actionViewClass="android.widget.SearchView" />
+        app:actionViewClass="android.support.v7.widget.SearchView" />
 
     <item
         android:id="@+id/sort"
         android:title="@string/option_sort"
         android:icon="@drawable/ic_sort_icon"
-        app:showAsAction="ifRoom" />
+        app:showAsAction="ifRoom|collapseActionView" />
 
 </menu>
\ No newline at end of file

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

@@ -15,5 +15,4 @@
     <string name="menu_option_edit">Edit</string>
     <string name="option_sort">Sort</string>
     <string name="option_search">Search</string>
-    <string name="search_hint">Enter word</string>
 </resources>

app/src/main/res/xml/searchable.xml

 <?xml version="1.0" encoding="utf-8"?>
 <searchable xmlns:android="http://schemas.android.com/apk/res/android"
-    android:label="@string/app_name"/>
\ No newline at end of file
+    android:label="@string/app_name" />
\ No newline at end of file