Added refresh by swipe

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

@@ -8,10 +8,11 @@ import android.support.v7.widget.RecyclerView
 import android.view.*
 import android.widget.LinearLayout
 import android.widget.TextView
-import com.paktalin.vocabularynotebook.firestoreitems.Vocabulary
+import com.google.firebase.Timestamp
 import com.paktalin.vocabularynotebook.firestoreitems.WordItem
 import com.paktalin.vocabularynotebook.ui.fragments.EditWordFragment
 import com.paktalin.vocabularynotebook.ui.activities.MainActivity
+import com.paktalin.vocabularynotebook.utils.FirestoreManager
 import com.paktalin.vocabularynotebook.utils.addFragment
 import kotlinx.android.synthetic.main.word_item.view.*
 
@@ -74,6 +75,14 @@ class VocabularyAdapter(private val displayedVocabulary: Vocabulary, private val
         this.notifyItemRangeChanged(position, displayedVocabulary.size())
     }
 
+    fun updateAll() {
+        displayedVocabulary.clear()
+        FirestoreManager().retrieveWordsData { documents ->
+            displayedVocabulary.addWordsAsDocuments(documents)
+            this.notifyDataSetChanged()
+        }
+    }
+
     fun addWord(newWord: WordItem) {
         displayedVocabulary.addWord(newWord)
         this.sort()

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

-package com.paktalin.vocabularynotebook.firestoreitems
-
-class Vocabulary(words: MutableList<WordItem>) {
-    companion object {
-        private val TAG = "VN/" + Vocabulary::class.java.simpleName
-
-        private const val SORT_BY_TIME = 0
-        private const val SORT_BY_WORD = 1
-        private const val SORT_BY_TRANSLATION = 2
-    }
-
-    var pojo:Pojo
-    private var words: MutableList<WordItem>
-
-    class Pojo(var title:String?) {
-        init {
-            if (title == null) title = "Untitled vocabulary"
-        }
-    }
-
-    init {
-        this.pojo = Pojo(null)
-        this.words = words
-    }
-
-    fun sort(sortOrder:Int) {
-        when(sortOrder) {
-            SORT_BY_TIME -> sortByTime()
-            SORT_BY_WORD -> sortByWord()
-            SORT_BY_TRANSLATION -> sortByTranslation()
-        }
-    }
-
-    fun deleteWord(position:Int) {
-        words[position].delete() // delete word from the database
-        words.removeAt(position) // delete word from the list
-    }
-
-    fun addWord(newWord:WordItem) {
-        words.add(0, newWord)
-    }
-
-    fun addWords(newWords:MutableList<WordItem>) {
-        words.addAll(newWords)
-    }
-
-    fun addWordsFittingQuery(newWords:MutableList<WordItem>, query:String) {
-        for (newWord in newWords) {
-            if (newWord.contains(query))
-                this.addWord(newWord)
-        }
-    }
-
-    fun updateWord(updatedWord:WordItem) {
-        val updatedItemIndex = words.indexOf(updatedWord)
-        words[updatedItemIndex] = updatedWord
-    }
-
-    fun getAt(position: Int):WordItem {
-        return words[position]
-    }
-
-    fun get():MutableList<WordItem> { return words }
-
-    fun size():Int { return words.size }
-
-    fun clear() { words.clear() }
-
-    private fun sortByTime() {
-        words.sortWith(Comparator { item1, item2 ->
-            -item1.pojo.time!!.compareTo(item2.pojo.time) })
-    }
-    private fun sortByWord() {
-        words.sortWith(Comparator { item1, item2 ->
-            item1.pojo.word.compareTo(item2.pojo.word) })
-    }
-    private fun sortByTranslation() {
-        words.sortWith(Comparator { item1, item2 ->
-            item1.pojo.translation.compareTo(item2.pojo.translation) })
-    }
-}
\ No newline at end of file

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

+package com.paktalin.vocabularynotebook.firestoreitems
+
+class VocabularyPojo(var title:String?) {
+    init {
+        if (title == null) title = "Untitled vocabulary"
+    }
+}

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

@@ -11,10 +11,12 @@ import android.view.View
 import android.view.inputmethod.InputMethodManager
 import kotlinx.android.synthetic.main.fragment_vocabulary.*
 import android.support.v7.widget.SearchView
+import android.util.Log
 import android.view.WindowManager
 import com.paktalin.vocabularynotebook.*
 import com.paktalin.vocabularynotebook.ui.fragments.VocabularyFragment
 import com.paktalin.vocabularynotebook.utils.*
+import kotlinx.android.synthetic.main.content_main.*
 
 class MainActivity : AppCompatActivity() {
 
@@ -25,6 +27,8 @@ class MainActivity : AppCompatActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
+        FirestoreManager.vocabularyId = getSavedVocabularyId(this@MainActivity)
+        swipeRefresh.setOnRefreshListener { refreshVocabulary() }
         hideKeyboard()
         setUpNavigationView()
         extractVocabularyData()
@@ -47,6 +51,11 @@ class MainActivity : AppCompatActivity() {
         startActivity(this@MainActivity, LogInActivity::class.java)
     }
 
+    private fun refreshVocabulary() {
+        (recyclerView.adapter as VocabularyAdapter).updateAll()
+        swipeRefresh.isRefreshing = false
+    }
+
     private fun setUpNavigationView() {
         navigationView.setNavigationItemSelectedListener { menuItem ->
             menuItem.isChecked = true
@@ -61,9 +70,9 @@ class MainActivity : AppCompatActivity() {
     private fun extractVocabularyData() {
         addProgressBar()
         FirestoreManager().extractVocabularyId(
-                { id-> addVocabularyFragment(id) },
+                { addVocabularyFragment(FirestoreManager.vocabularyId!!) },
                 { showToastNoWords() },
-                { removeProgressBar() })
+                { removeProgressBar() }, this)
     }
 
     private fun addVocabularyFragment(vocabularyId: String) {

app/src/main/java/com/paktalin/vocabularynotebook/ui/fragments/AddWordFragment.kt

@@ -28,7 +28,7 @@ class AddWordFragment : WordFragment() {
         FirestoreManager().saveNewWord(
                 { documentId ->  onSuccessfulSave(wordPojo, vocabularyId, documentId) },
                 { shortToast(mainActivity, getString(R.string.toast_new_word_fail)) },
-                wordPojo, vocabularyId)
+                wordPojo)
     }
 
     override fun updateRecycleView(wordItem: WordItem) {

app/src/main/java/com/paktalin/vocabularynotebook/ui/fragments/EditWordFragment.kt

@@ -74,7 +74,7 @@ class EditWordFragment : WordFragment() {
         FirestoreManager().updateWord(
                 { onSuccessfulSave(wordPojo) },
                 { onFailure() },
-                wordItem, wordPojo, vocabularyId)
+                wordItem, wordPojo)
     }
 
     private fun onSuccessfulSave(wordPojo: WordItem.Pojo) {

app/src/main/java/com/paktalin/vocabularynotebook/ui/fragments/VocabularyFragment.kt

@@ -9,7 +9,7 @@ import android.view.ViewGroup
 import com.google.firebase.Timestamp
 import com.google.firebase.firestore.DocumentSnapshot
 import com.paktalin.vocabularynotebook.*
-import com.paktalin.vocabularynotebook.firestoreitems.Vocabulary
+import com.paktalin.vocabularynotebook.Vocabulary
 import com.paktalin.vocabularynotebook.firestoreitems.WordItem
 import com.paktalin.vocabularynotebook.ui.activities.MainActivity
 import com.paktalin.vocabularynotebook.ui.views.LockableLayoutManager
@@ -43,8 +43,8 @@ class VocabularyFragment : Fragment() {
     }
 
     private fun extractWordsData(vocabularyId: String) {
-        FirestoreManager().retrieveWordsData({ documents ->
-            onSuccessfulWordDataExtraction(documents, vocabularyId)}, vocabularyId)
+        FirestoreManager().retrieveWordsData { documents ->
+            onSuccessfulWordDataExtraction(documents, vocabularyId)}
     }
 
     private fun onSuccessfulWordDataExtraction(documents: MutableList<DocumentSnapshot>, vocabularyId: String) {
@@ -57,16 +57,8 @@ class VocabularyFragment : Fragment() {
     }
 
     private fun setVocabularyAdapter(documents: MutableList<DocumentSnapshot>, vocabularyId: String) {
-        val wordItems: MutableList<WordItem> = mutableListOf()
-
-        for (ref in documents) {
-            val word = ref["word"].toString()
-            val translation = ref["translation"].toString()
-            val time = ref["time"] as Timestamp
-            wordItems.add(WordItem(word, translation, time.toDate(), ref.id, vocabularyId))
-        }
-
-        val vocabulary = Vocabulary(wordItems)
+        val vocabulary = Vocabulary()
+        vocabulary.addWordsAsDocuments(documents)
         val adapter = VocabularyAdapter(vocabulary, mainActivity)
         recyclerView.adapter = adapter
     }

app/src/main/java/com/paktalin/vocabularynotebook/ui/fragments/WordFragment.kt

@@ -62,9 +62,8 @@ abstract class WordFragment : Fragment() {
 
         val word = word.text.toString()
         val translation = translation.text.toString()
-        val vocabularyId = FirestoreManager.vocabularyId
         mainActivity.addProgressBar()
-        saveToFirestore(word, translation, vocabularyId)
+        saveToFirestore(word, translation, FirestoreManager.vocabularyId!!)
         return
     }
 

app/src/main/java/com/paktalin/vocabularynotebook/utils/FirestoreManager.kt

 package com.paktalin.vocabularynotebook.utils
 
+import android.content.Context
 import android.util.Log
 import com.google.firebase.auth.FirebaseAuth
 import com.google.firebase.auth.FirebaseUser
@@ -9,10 +10,9 @@ import com.google.firebase.firestore.FirebaseFirestore
 import com.google.firebase.firestore.Query
 import com.paktalin.vocabularynotebook.appsetup.ConfiguredFirestore
 import com.paktalin.vocabularynotebook.firestoreitems.UserPojo
-import com.paktalin.vocabularynotebook.firestoreitems.Vocabulary
+import com.paktalin.vocabularynotebook.firestoreitems.VocabularyPojo
 import com.paktalin.vocabularynotebook.firestoreitems.WordItem
 import com.paktalin.vocabularynotebook.ui.activities.LogInActivity
-import com.paktalin.vocabularynotebook.ui.fragments.VocabularyFragment
 import java.util.*
 
 class FirestoreManager {
@@ -20,15 +20,15 @@ class FirestoreManager {
     private val db: FirebaseFirestore = ConfiguredFirestore.instance
     private val vocabularyCollection = db.collection(VOCABULARIES)
 
-    fun extractVocabularyId(onSuccess: (vocabularyId: String) -> Unit,
-                            showToastNoWords: () -> Unit, removeProgressBar: () -> Unit) {
+    fun extractVocabularyId(onSuccess: () -> Unit,
+                            showToastNoWords: () -> Unit, removeProgressBar: () -> Unit, mainActivity: Context) {
         val userId = FirebaseAuth.getInstance()!!.currentUser!!.uid
         userDocument(userId).get()
                 .addOnSuccessListener { snapshot ->
                     removeProgressBar()
                     if (snapshot.get(VOCABULARIES) != null) {
-                        setVocabularyID(snapshot)
-                        onSuccess(vocabularyId)
+                        setVocabularyID(snapshot, mainActivity)
+                        onSuccess()
                     } else {
                         Log.w(TAG, "There's no collection \"vocabularies\"")
                         showToastNoWords()
@@ -38,7 +38,7 @@ class FirestoreManager {
 
     fun addNewUser(firebaseUser: FirebaseUser, logInActivity: LogInActivity) {
         //todo add condition to writing to the db in Firebase Console (request.auth.uid)
-        vocabularyCollection.add(Vocabulary.Pojo(null))
+        vocabularyCollection.add(VocabularyPojo(null))
                 .addOnSuccessListener { firstVocabularyRef ->
                     Log.d(TAG, "VocabularyPojo successfully created: " + firstVocabularyRef.path)
                     setNewUserWithVocabularyData(firebaseUser, firstVocabularyRef, logInActivity)
@@ -50,8 +50,8 @@ class FirestoreManager {
     }
 
     fun saveNewWord(onSuccess: (documentId: String) -> Unit, onFailure: () -> Unit,
-                    wordPojo: WordItem.Pojo, vocabularyId: String) {
-        vocabularyDocument(vocabularyId)
+                    wordPojo: WordItem.Pojo) {
+        vocabularyDocument()
                 .collection(WORDS).add(wordPojo)
                 .addOnSuccessListener {
                     Log.i(TAG, "Successfully added a new word")
@@ -62,9 +62,8 @@ class FirestoreManager {
                     onFailure() }
     }
 
-    fun updateWord(onSuccess: () -> Unit, onFailure: () -> Unit,
-                   wordItem: WordItem, wordPojo: WordItem.Pojo, vocabularyId: String) {
-        vocabularyDocument(vocabularyId)
+    fun updateWord(onSuccess: () -> Unit, onFailure: () -> Unit, wordItem: WordItem, wordPojo: WordItem.Pojo) {
+        vocabularyDocument()
                 .collection(WORDS).document(wordItem.id).set(wordPojo)
                 .addOnSuccessListener {
                     Log.i(TAG, "Successfully updated the word")
@@ -77,14 +76,14 @@ class FirestoreManager {
     }
 
     fun deleteWord(id: String) {
-        vocabularyDocument(vocabularyId)
+        vocabularyDocument()
                 .collection(WORDS).document(id).delete()
                 .addOnSuccessListener { Log.i(TAG, "Successfully deleted word with id $id") }
                 .addOnFailureListener { e -> Log.w(TAG, "deleteWordWithId $id:failure", e.fillInStackTrace()) }
     }
 
-    fun retrieveWordsData(onSuccess: (documents: MutableList<DocumentSnapshot>) -> Unit, vocabularyId: String) {
-        vocabularyDocument(vocabularyId).collection(WORDS)
+    fun retrieveWordsData(onSuccess: (documents: MutableList<DocumentSnapshot>) -> Unit) {
+        vocabularyDocument().collection(WORDS)
                 .orderBy("time", Query.Direction.DESCENDING)
                 .get()
                 .addOnSuccessListener { onSuccess(it.documents)}
@@ -105,9 +104,10 @@ class FirestoreManager {
                 }
     }
 
-    private fun setVocabularyID(snapshot: DocumentSnapshot) {
+    private fun setVocabularyID(snapshot: DocumentSnapshot, context: Context) {
         val vocabularies: List<DocumentReference> = snapshot.get(VOCABULARIES) as List<DocumentReference>
-        val vocabulary = vocabularyDocument(vocabularies[0].id)
+        val vocabulary = vocabularyCollection.document(vocabularies[0].id)
+        saveVocabularyId(context, vocabulary.id)
         vocabularyId = vocabulary.id
     }
 
@@ -115,8 +115,8 @@ class FirestoreManager {
         return db.collection(USERS).document(userId)
     }
 
-    private fun vocabularyDocument(vocabularyId: String): DocumentReference {
-        return vocabularyCollection.document(vocabularyId)
+    private fun vocabularyDocument(): DocumentReference {
+        return vocabularyCollection.document(vocabularyId!!)
     }
 
     companion object {
@@ -125,6 +125,6 @@ class FirestoreManager {
         private const val VOCABULARIES = "vocabularies"
         private const val TAG = "VN/FirestoreManager"
 
-        lateinit var vocabularyId: String
+        var vocabularyId: String? = null
     }
 }
\ No newline at end of file

app/src/main/java/com/paktalin/vocabularynotebook/utils/PreferenceUtil.kt

+package com.paktalin.vocabularynotebook.utils
+
+import android.content.Context
+import android.preference.PreferenceManager
+
+private const val vocabularyIdKey = "vocabularyId"
+
+fun saveVocabularyId(context: Context, vocabularyId: String) {
+    val sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context)
+    sharedPreferences.edit().putString(vocabularyIdKey, vocabularyId).apply()
+}
+
+fun getSavedVocabularyId(context: Context): String? {
+    val sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context)
+    return sharedPreferences.getString(vocabularyIdKey, null)
+}
\ No newline at end of file

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

@@ -14,12 +14,12 @@
         android:layout_marginRight="@dimen/small_margin"
         android:layout_marginStart="@dimen/small_margin"
         android:layout_marginTop="@dimen/small_margin"
-        android:paddingStart="@dimen/small_padding"
-        android:paddingLeft="@dimen/small_padding"
+        android:background="@drawable/sheet_top"
         android:paddingEnd="@dimen/small_padding"
+        android:paddingLeft="@dimen/small_padding"
         android:paddingRight="@dimen/small_padding"
+        android:paddingStart="@dimen/small_padding"
         android:paddingTop="@dimen/small_padding"
-        android:background="@drawable/sheet_top"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent">
@@ -28,61 +28,66 @@
             android:id="@+id/fragmentAddWord"
             android:name="com.paktalin.vocabularynotebook.ui.fragments.AddWordFragment"
             android:layout_width="match_parent"
-            android:layout_height="wrap_content"/>
+            android:layout_height="wrap_content" />
     </FrameLayout>
 
-    <com.paktalin.vocabularynotebook.ui.views.LockableScrollView
-        android:id="@+id/scrollView"
+
+    <android.support.v4.widget.SwipeRefreshLayout xmlns:android="http://schemas.android.com/apk/res/android"
+        android:id="@+id/swipeRefresh"
         android:layout_width="match_parent"
         android:layout_height="0dp"
         android:layout_marginEnd="@dimen/small_margin"
         android:layout_marginLeft="@dimen/small_margin"
         android:layout_marginRight="@dimen/small_margin"
         android:layout_marginStart="@dimen/small_margin"
-        android:scrollbars="vertical"
         app:layout_constraintBottom_toTopOf="@+id/btnSubmitLayout"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toBottomOf="@+id/container_main">
 
-        <LinearLayout
-            android:id="@+id/container_vocabulary"
+        <com.paktalin.vocabularynotebook.ui.views.LockableScrollView
+            android:id="@+id/scrollView"
             android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:background="@drawable/sheet_bottom"
-            android:orientation="vertical"
-            android:paddingStart="@dimen/small_padding"
-            android:paddingLeft="@dimen/small_padding"
-            android:paddingEnd="@dimen/small_padding"
-            android:paddingRight="@dimen/small_padding"
-            android:paddingBottom="@dimen/small_padding">
-        </LinearLayout>
+            android:layout_height="0dp"
+            android:scrollbars="vertical">
 
-    </com.paktalin.vocabularynotebook.ui.views.LockableScrollView>
+            <LinearLayout
+                android:id="@+id/container_vocabulary"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:background="@drawable/sheet_bottom"
+                android:orientation="vertical"
+                android:paddingBottom="@dimen/small_padding"
+                android:paddingEnd="@dimen/small_padding"
+                android:paddingLeft="@dimen/small_padding"
+                android:paddingRight="@dimen/small_padding"
+                android:paddingStart="@dimen/small_padding" />
+        </com.paktalin.vocabularynotebook.ui.views.LockableScrollView>
+    </android.support.v4.widget.SwipeRefreshLayout>
 
     <LinearLayout
         android:id="@+id/btnSubmitLayout"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:background="@color/colorPrimary"
-        android:visibility="gone"
         android:orientation="horizontal"
+        android:visibility="gone"
         app:layout_constraintBottom_toBottomOf="parent">
 
         <ImageButton
             android:id="@+id/btnCancel"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            app:srcCompat="@drawable/ic_close_icon"
-            android:background="@android:color/transparent"
             android:layout_gravity="center_vertical"
             android:layout_margin="@dimen/small_margin"
+            android:background="@android:color/transparent"
+            app:srcCompat="@drawable/ic_close_icon"
             tools:ignore="ContentDescription" />
 
         <View
             android:layout_width="0dp"
             android:layout_height="0dp"
-            android:layout_weight="1"/>
+            android:layout_weight="1" />
 
         <ImageButton
             android:id="@+id/btnSubmit"