[UI/Messages] Restore search string after closing a message. Add message counter.

app/src/main/java/pl/szczodrzynski/edziennik/Extensions.kt

@@ -15,6 +15,7 @@ import android.graphics.drawable.Drawable
 import android.os.Build
 import android.os.Bundle
 import android.text.*
+import android.text.style.CharacterStyle
 import android.text.style.ForegroundColorSpan
 import android.text.style.StrikethroughSpan
 import android.text.style.StyleSpan
@@ -552,28 +553,46 @@ fun CharSequence?.asBoldSpannable(): Spannable {
     spannable.setSpan(StyleSpan(Typeface.BOLD), 0, spannable.length, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE)
     return spannable
 }
-fun CharSequence.asSpannable(vararg spans: Any, substring: String? = null, ignoreCase: Boolean = false, ignoreDiacritics: Boolean = false): Spannable {
+fun CharSequence.asSpannable(
+    vararg spans: CharacterStyle,
+    substring: CharSequence? = null,
+    ignoreCase: Boolean = false,
+    ignoreDiacritics: Boolean = false
+): Spannable {
     val spannable = SpannableString(this)
-    if (substring == null) {
-        spans.forEach {
-            spannable.setSpan(it, 0, spannable.length, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE)
-        }
-    }
-    else if (substring.isNotEmpty()) {
-        val string =
-                if (ignoreDiacritics)
-                    this.cleanDiacritics()
-                else this
+    substring?.let { substr ->
+        val string = if (ignoreDiacritics)
+            this.cleanDiacritics()
+        else
+            this
+        val search = if (ignoreDiacritics)
+            substr.cleanDiacritics()
+        else
+            substr.toString()
 
-        var index = string.indexOf(substring, ignoreCase = ignoreCase)
-                .takeIf { it != -1 } ?: indexOf(substring, ignoreCase = ignoreCase)
-        while (index >= 0) {
-            spans.forEach {
-                spannable.setSpan(it, index, index + substring.length, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE)
+        var index = 0
+        do {
+            index = string.indexOf(
+                string = search,
+                startIndex = index,
+                ignoreCase = ignoreCase
+            )
+
+            if (index >= 0) {
+                spans.forEach {
+                    spannable.setSpan(
+                        CharacterStyle.wrap(it),
+                        index,
+                        index + substring.length,
+                        Spannable.SPAN_EXCLUSIVE_EXCLUSIVE
+                    )
+                }
+                index += substring.length.coerceAtLeast(1)
             }
-            index = string.indexOf(substring, startIndex = index + 1, ignoreCase = ignoreCase)
-                    .takeIf { it != -1 } ?: indexOf(substring, startIndex = index + 1, ignoreCase = ignoreCase)
-        }
+        } while (index >= 0)
+
+    } ?: spans.forEach {
+        spannable.setSpan(it, 0, spannable.length, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE)
     }
     return spannable
 }

app/src/main/java/pl/szczodrzynski/edziennik/data/db/full/MessageFull.kt

@@ -30,7 +30,7 @@ class MessageFull(
     @Ignore
     var filterWeight = 0
     @Ignore
-    var searchHighlightText: String? = null
+    var searchHighlightText: CharSequence? = null
 
     // metadata
     var seen = false

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/messages/MessagesAdapter.kt

@@ -1,11 +1,8 @@
 package pl.szczodrzynski.edziennik.ui.modules.messages
 
 import android.graphics.Typeface
-import android.text.Editable
-import android.text.TextWatcher
 import android.view.LayoutInflater
 import android.view.ViewGroup
-import android.widget.Filter
 import android.widget.Filterable
 import androidx.appcompat.app.AppCompatActivity
 import androidx.recyclerview.widget.RecyclerView
@@ -13,22 +10,19 @@ import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
 import pl.szczodrzynski.edziennik.App
-import pl.szczodrzynski.edziennik.cleanDiacritics
-import pl.szczodrzynski.edziennik.data.db.entity.Message
 import pl.szczodrzynski.edziennik.data.db.entity.Teacher
 import pl.szczodrzynski.edziennik.data.db.full.MessageFull
 import pl.szczodrzynski.edziennik.ui.modules.grades.viewholder.BindableViewHolder
 import pl.szczodrzynski.edziennik.ui.modules.messages.models.MessagesSearch
+import pl.szczodrzynski.edziennik.ui.modules.messages.utils.MessagesFilter
 import pl.szczodrzynski.edziennik.ui.modules.messages.viewholder.MessageViewHolder
 import pl.szczodrzynski.edziennik.ui.modules.messages.viewholder.SearchViewHolder
-import java.util.*
 import kotlin.coroutines.CoroutineContext
-import kotlin.math.min
 
 class MessagesAdapter(
-        val activity: AppCompatActivity,
-        val teachers: List<Teacher>,
-        val onItemClick: ((item: MessageFull) -> Unit)? = null
+    val activity: AppCompatActivity,
+    val teachers: List<Teacher>,
+    val onItemClick: ((item: MessageFull) -> Unit)? = null
 ) : RecyclerView.Adapter<RecyclerView.ViewHolder>(), CoroutineScope, Filterable {
     companion object {
         private const val TAG = "MessagesAdapter"
@@ -43,41 +37,10 @@ class MessagesAdapter(
     override val coroutineContext: CoroutineContext
         get() = job + Dispatchers.Main
 
-    var items = mutableListOf<Any>()
-    var allItems = mutableListOf<Any>()
+    var items = listOf<Any>()
+    var allItems = listOf<Any>()
     val typefaceNormal: Typeface by lazy { Typeface.create(Typeface.DEFAULT, Typeface.NORMAL) }
     val typefaceBold: Typeface by lazy { Typeface.create(Typeface.DEFAULT, Typeface.BOLD) }
-    private val comparator by lazy { Comparator { o1: Any, o2: Any ->
-        if (o1 !is MessageFull || o2 !is MessageFull)
-            return@Comparator 0
-        when {
-            // standard sorting
-            o1.filterWeight > o2.filterWeight -> return@Comparator 1
-            o1.filterWeight < o2.filterWeight -> return@Comparator -1
-            else -> when {
-                // reversed sorting
-                o1.addedDate > o2.addedDate -> return@Comparator -1
-                o1.addedDate < o2.addedDate -> return@Comparator 1
-                else -> return@Comparator 0
-            }
-        }
-    }}
-
-    val textWatcher by lazy {
-        object : TextWatcher {
-            override fun afterTextChanged(s: Editable?) {
-                getFilter().filter(s.toString())
-            }
-            override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) {}
-            override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) {
-                /*items.getOrNull(0)?.let {
-                    if (it is MessagesSearch) {
-                        it.searchText = s?.toString() ?: ""
-                    }
-                }*/
-            }
-        }
-    }
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
         val inflater = LayoutInflater.from(parent.context)
@@ -103,138 +66,16 @@ class MessagesAdapter(
             return
 
         when {
-            holder is MessageViewHolder && item is MessageFull -> holder.onBind(activity, app, item, position, this)
-            holder is SearchViewHolder && item is MessagesSearch -> holder.onBind(activity, app, item, position, this)
+            holder is MessageViewHolder
+                    && item is MessageFull -> holder.onBind(activity, app, item, position, this)
+            holder is SearchViewHolder
+                    && item is MessagesSearch -> holder.onBind(activity, app, item, position, this)
         }
     }
 
+    private val messagesFilter by lazy {
+        MessagesFilter(this)
+    }
     override fun getItemCount() = items.size
-    override fun getFilter() = filter
-    private var prevCount = -1
-    private val filter by lazy { object : Filter() {
-        override fun performFiltering(prefix: CharSequence?): FilterResults {
-            val results = FilterResults()
-
-            if (prevCount == -1)
-                prevCount = allItems.size
-
-            if (prefix.isNullOrEmpty()) {
-                allItems.forEach {
-                    if (it is MessageFull)
-                        it.searchHighlightText = null
-                }
-                results.values = allItems.toList()
-                results.count = allItems.size
-                return results
-            }
-
-            val items = mutableListOf<Any>()
-            val prefixString = prefix.toString()
-
-            allItems.forEach {
-                if (it !is MessageFull) {
-                    items.add(it)
-                    return@forEach
-                }
-                it.filterWeight = 100
-                it.searchHighlightText = null
-
-                var weight: Int
-                if (it.type == Message.TYPE_SENT) {
-                    it.recipients?.forEach { recipient ->
-                        weight = getMatchWeight(recipient.fullName, prefixString)
-                        if (weight != 100) {
-                            if (weight == 3)
-                                weight = 31
-                            it.filterWeight = min(it.filterWeight, 10 + weight)
-                        }
-                    }
-                }
-                else {
-                    weight = getMatchWeight(it.senderName, prefixString)
-                    if (weight != 100) {
-                        if (weight == 3)
-                            weight = 31
-                        it.filterWeight = min(it.filterWeight, 10 + weight)
-                    }
-                }
-
-
-                weight = getMatchWeight(it.subject, prefixString)
-                if (weight != 100) {
-                    if (weight == 3)
-                        weight = 22
-                    it.filterWeight = min(it.filterWeight, 20 + weight)
-                }
-
-                if (it.filterWeight != 100) {
-                    it.searchHighlightText = prefixString
-                    items.add(it)
-                }
-            }
-
-            Collections.sort(items, comparator)
-            results.values = items
-            results.count = items.size
-            return results
-        }
-
-        override fun publishResults(constraint: CharSequence?, results: FilterResults) {
-            results.values?.let { items = it as MutableList<Any> }
-            // do not re-bind the search box
-            val count = results.count - 1
-
-            // this tries to update every item except the search field
-            when {
-                count > prevCount -> {
-                    notifyItemRangeInserted(prevCount + 1, count - prevCount)
-                    notifyItemRangeChanged(1, prevCount)
-                }
-                count < prevCount -> {
-                    notifyItemRangeRemoved(prevCount + 1, prevCount - count)
-                    notifyItemRangeChanged(1, count)
-                }
-                else -> {
-                    notifyItemRangeChanged(1, count)
-                }
-            }
-
-            /*if (prevCount != count) {
-                items.getOrNull(0)?.let {
-                    if (it is MessagesSearch) {
-                        it.count = count
-                        notifyItemChanged(0)
-                    }
-                }
-            }*/
-
-            prevCount = count
-        }
-    }}
-
-    private fun getMatchWeight(name: CharSequence?, prefix: String): Int {
-        if (name == null)
-            return 100
-
-        val nameClean = name.cleanDiacritics()
-
-        // First match against the whole, non-split value
-        if (nameClean.startsWith(prefix, ignoreCase = true) || name.startsWith(prefix, ignoreCase = true)) {
-            return 1
-        } else {
-            // check if prefix matches any of the words
-            val words = nameClean.split(" ").toTypedArray() + name.split(" ").toTypedArray()
-            for (word in words) {
-                if (word.startsWith(prefix, ignoreCase = true)) {
-                    return 2
-                }
-            }
-        }
-        // finally check if the prefix matches any part of the name
-        if (nameClean.contains(prefix, ignoreCase = true) || name.contains(prefix, ignoreCase = true)) {
-            return 3
-        }
-
-        return 100
-    }
+    override fun getFilter() = messagesFilter
 }

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/messages/MessagesListFragment.kt

@@ -33,6 +33,7 @@ class MessagesListFragment : LazyFragment(), CoroutineScope {
     private lateinit var app: App
     private lateinit var activity: MainActivity
     private lateinit var b: MessagesListFragmentBinding
+    private var adapter: MessagesAdapter? = null
 
     private val job: Job = Job()
     override val coroutineContext: CoroutineContext
@@ -53,21 +54,22 @@ class MessagesListFragment : LazyFragment(), CoroutineScope {
         val messageType = arguments.getInt("messageType", Message.TYPE_RECEIVED)
         var topPosition = arguments.getInt("topPosition", NO_POSITION)
         var bottomPosition = arguments.getInt("bottomPosition", NO_POSITION)
+        val searchText = arguments.getString("searchText", "")
 
         teachers = withContext(Dispatchers.Default) {
             app.db.teacherDao().getAllNow(App.profileId)
         }
 
-        val adapter = MessagesAdapter(activity, teachers) {
+        adapter = MessagesAdapter(activity, teachers) {
             activity.loadTarget(MainActivity.TARGET_MESSAGES_DETAILS, Bundle(
                     "messageId" to it.id
             ))
         }
 
-        app.db.messageDao().getAllByType(App.profileId, messageType).observe(this@MessagesListFragment, Observer { items ->
+        app.db.messageDao().getAllByType(App.profileId, messageType).observe(this@MessagesListFragment, Observer { messages ->
             if (!isAdded) return@Observer
 
-            items.forEach { message ->
+            messages.forEach { message ->
                 message.recipients?.removeAll { it.profileId != message.profileId }
                 message.recipients?.forEach { recipient ->
                     if (recipient.fullName == null) {
@@ -77,13 +79,22 @@ class MessagesListFragment : LazyFragment(), CoroutineScope {
             }
 
             // load & configure the adapter
-            adapter.items = items.toMutableList()
-            adapter.items.add(0, MessagesSearch().also {
-                it.count = items.size
+            val items = messages.toMutableList<Any>()
+            items.add(0, MessagesSearch().also {
+                it.searchText = searchText
             })
-            adapter.allItems = adapter.items.toMutableList()
+
+            adapter?.items = items
+            adapter?.allItems = items
+
             if (items.isNotNullNorEmpty() && b.list.adapter == null) {
-                b.list.adapter = adapter
+                if (searchText.isNotBlank())
+                    adapter?.filter?.filter(searchText) {
+                        b.list.adapter = adapter
+                    }
+                else
+                    b.list.adapter = adapter
+
                 b.list.apply {
                     setHasFixedSize(true)
                     layoutManager = LinearLayoutManager(context)
@@ -92,7 +103,7 @@ class MessagesListFragment : LazyFragment(), CoroutineScope {
                         addOnScrollListener(onScrollListener)
                 }
             }
-            adapter.notifyDataSetChanged()
+
             setSwipeToRefresh(messageType in Message.TYPE_RECEIVED..Message.TYPE_SENT && items.isNullOrEmpty())
 
             (b.list.layoutManager as? LinearLayoutManager)?.let { layoutManager ->
@@ -119,10 +130,15 @@ class MessagesListFragment : LazyFragment(), CoroutineScope {
 
     override fun onDestroy() {
         super.onDestroy()
-        if (!isAdded) return
+        if (!isAdded)
+            return
+        val layoutManager = (b.list.layoutManager as? LinearLayoutManager)
+        val searchItem = adapter?.items?.firstOrNull { it is MessagesSearch } as? MessagesSearch
+
         onPageDestroy?.invoke(position, Bundle(
-                "topPosition" to (b.list.layoutManager as? LinearLayoutManager)?.findFirstVisibleItemPosition(),
-                "bottomPosition" to (b.list.layoutManager as? LinearLayoutManager)?.findLastCompletelyVisibleItemPosition()
+            "topPosition" to layoutManager?.findFirstVisibleItemPosition(),
+            "bottomPosition" to layoutManager?.findLastCompletelyVisibleItemPosition(),
+            "searchText" to searchItem?.searchText?.toString()
         ))
     }
 }

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/messages/models/MessagesSearch.kt

@@ -5,7 +5,5 @@
 package pl.szczodrzynski.edziennik.ui.modules.messages.models
 
 class MessagesSearch {
-    var isFocused = false
-    var searchText = ""
-    var count = 0
+    var searchText: CharSequence = ""
 }

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/messages/utils/MessagesComparator.kt

@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) Kuba Szczodrzyński 2021-4-14.
+ */
+
+package pl.szczodrzynski.edziennik.ui.modules.messages.utils
+
+import pl.szczodrzynski.edziennik.data.db.full.MessageFull
+
+class MessagesComparator : Comparator<Any> {
+
+    override fun compare(o1: Any?, o2: Any?): Int {
+        if (o1 !is MessageFull || o2 !is MessageFull)
+            return 0
+
+        return when {
+            // standard sorting
+            o1.filterWeight > o2.filterWeight -> 1
+            o1.filterWeight < o2.filterWeight -> -1
+            else -> when {
+                // reversed sorting
+                o1.addedDate > o2.addedDate -> -1
+                o1.addedDate < o2.addedDate -> 1
+                else -> 0
+            }
+        }
+    }
+}

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/messages/utils/MessagesFilter.kt

@@ -0,0 +1,149 @@
+/*
+ * Copyright (c) Kuba Szczodrzyński 2021-4-14.
+ */
+
+package pl.szczodrzynski.edziennik.ui.modules.messages.utils
+
+import android.widget.Filter
+import pl.szczodrzynski.edziennik.cleanDiacritics
+import pl.szczodrzynski.edziennik.data.db.entity.Message
+import pl.szczodrzynski.edziennik.data.db.full.MessageFull
+import pl.szczodrzynski.edziennik.ui.modules.messages.MessagesAdapter
+import java.util.*
+import kotlin.math.min
+
+class MessagesFilter(
+    private val adapter: MessagesAdapter
+) : Filter() {
+    companion object {
+        private const val NO_MATCH = 1000
+    }
+
+    private val comparator = MessagesComparator()
+    private var prevCount = -1
+
+    private val allItems
+        get() = adapter.allItems
+
+    private fun getMatchWeight(name: CharSequence?, prefix: CharSequence): Int {
+        if (name == null)
+            return NO_MATCH
+
+        val prefixClean = prefix.cleanDiacritics()
+        val nameClean = name.cleanDiacritics()
+
+        return when {
+            // First match against the whole, non-split value
+            nameClean.startsWith(prefixClean, ignoreCase = true) -> 1
+            // check if prefix matches any of the words
+            nameClean.split(" ").any {
+                it.startsWith(prefixClean, ignoreCase = true)
+            } -> 2
+            // finally check if the prefix matches any part of the name
+            nameClean.contains(prefixClean, ignoreCase = true) -> 3
+
+            else -> NO_MATCH
+        }
+    }
+
+    override fun performFiltering(prefix: CharSequence?): FilterResults {
+        val results = FilterResults()
+
+        if (prevCount == -1)
+            prevCount = allItems.size
+
+        if (prefix.isNullOrBlank()) {
+            allItems.forEach {
+                if (it is MessageFull)
+                    it.searchHighlightText = null
+            }
+            results.values = allItems.toList()
+            results.count = allItems.size
+            return results
+        }
+
+        val items = mutableListOf<Any>()
+
+        allItems.forEach {
+            if (it !is MessageFull) {
+                items.add(it)
+                return@forEach
+            }
+            it.filterWeight = NO_MATCH
+            it.searchHighlightText = null
+
+            var weight: Int
+            // weights 11..13 and 110
+            if (it.type == Message.TYPE_SENT) {
+                it.recipients?.forEach { recipient ->
+                    weight = getMatchWeight(recipient.fullName, prefix)
+                    if (weight != NO_MATCH) {
+                        if (weight == 3)
+                            weight = 100
+                        it.filterWeight = min(it.filterWeight, 10 + weight)
+                    }
+                }
+            } else {
+                weight = getMatchWeight(it.senderName, prefix)
+                if (weight != NO_MATCH) {
+                    if (weight == 3)
+                        weight = 100
+                    it.filterWeight = min(it.filterWeight, 10 + weight)
+                }
+            }
+
+            // weights 21..23 and 120
+            weight = getMatchWeight(it.subject, prefix)
+            if (weight != NO_MATCH) {
+                if (weight == 3)
+                    weight = 100
+                it.filterWeight = min(it.filterWeight, 20 + weight)
+            }
+
+            // weights 31..33 and 130
+            weight = getMatchWeight(it.body, prefix)
+            if (weight != NO_MATCH) {
+                if (weight == 3)
+                    weight = 100
+                it.filterWeight = min(it.filterWeight, 30 + weight)
+            }
+
+            if (it.filterWeight != NO_MATCH) {
+                it.searchHighlightText = prefix
+                items.add(it)
+            }
+        }
+
+        Collections.sort(items, comparator)
+        results.values = items
+        results.count = items.size
+        return results
+    }
+
+    override fun publishResults(constraint: CharSequence?, results: FilterResults) {
+        results.values?.let {
+            adapter.items = it as MutableList<Any>
+        }
+        // do not re-bind the search box
+        val count = results.count - 1
+
+        // this tries to update every item except the search field
+        with(adapter) {
+            when {
+                count > prevCount -> {
+                    notifyItemRangeInserted(prevCount + 1, count - prevCount)
+                    notifyItemRangeChanged(1, prevCount)
+                }
+                count < prevCount -> {
+                    notifyItemRangeRemoved(prevCount + 1, prevCount - count)
+                    notifyItemRangeChanged(1, count)
+                }
+                else -> {
+                    notifyItemRangeChanged(1, count)
+                }
+            }
+        }
+
+        prevCount = count
+    }
+}

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/messages/utils/SearchTextWatcher.kt

@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) Kuba Szczodrzyński 2021-4-14.
+ */
+
+package pl.szczodrzynski.edziennik.ui.modules.messages.utils
+
+import android.text.Editable
+import android.text.TextWatcher
+import pl.szczodrzynski.edziennik.R
+import pl.szczodrzynski.edziennik.databinding.MessagesListItemSearchBinding
+import pl.szczodrzynski.edziennik.ui.modules.messages.models.MessagesSearch
+
+class SearchTextWatcher(
+    private val b: MessagesListItemSearchBinding,
+    private val filter: MessagesFilter,
+    private val item: MessagesSearch
+) : 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?) {
+        item.searchText = s ?: ""
+        filter.filter(s) { count ->
+            if (s.isNullOrBlank())
+                b.searchLayout.helperText = " "
+            else
+                b.searchLayout.helperText =
+                    b.root.context.getString(R.string.messages_search_results, count - 1)
+        }
+    }
+
+    override fun equals(other: Any?): Boolean {
+        return other is SearchTextWatcher
+    }
+
+    override fun hashCode(): Int {
+        var result = b.hashCode()
+        result = 31 * result + filter.hashCode()
+        result = 31 * result + item.hashCode()
+        return result
+    }
+}

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/messages/viewholder/MessageViewHolder.kt

@@ -22,17 +22,21 @@ import pl.szczodrzynski.edziennik.ui.modules.messages.MessagesUtils
 import pl.szczodrzynski.edziennik.utils.models.Date
 
 class MessageViewHolder(
-        inflater: LayoutInflater,
-        parent: ViewGroup,
-        val b: MessagesListItemBinding = MessagesListItemBinding.inflate(inflater, parent, false)
+    inflater: LayoutInflater,
+    parent: ViewGroup,
+    val b: MessagesListItemBinding = MessagesListItemBinding.inflate(inflater, parent, false)
 ) : RecyclerView.ViewHolder(b.root), BindableViewHolder<MessageFull, MessagesAdapter> {
     companion object {
         private const val TAG = "MessageViewHolder"
     }
 
-    override fun onBind(activity: AppCompatActivity, app: App, item: MessageFull, position: Int, adapter: MessagesAdapter) {
-        val manager = app.gradesManager
-
+    override fun onBind(
+        activity: AppCompatActivity,
+        app: App,
+        item: MessageFull,
+        position: Int,
+        adapter: MessagesAdapter
+    ) {
         b.messageSubject.text = item.subject
         b.messageDate.text = Date.fromMillis(item.addedDate).formattedStringShort
         b.messageAttachmentImage.isVisible = item.hasAttachments
@@ -55,15 +59,17 @@ class MessageViewHolder(
         b.messageProfileBackground.setImageBitmap(messageInfo.profileImage)
         b.messageSender.text = messageInfo.profileName
 
-        item.searchHighlightText?.let { highlight ->
+        item.searchHighlightText?.toString()?.let { highlight ->
             val colorHighlight = R.attr.colorControlHighlight.resolveAttr(activity)
 
             b.messageSubject.text = b.messageSubject.text.asSpannable(
-                    StyleSpan(Typeface.BOLD), BackgroundColorSpan(colorHighlight),
-                    substring = highlight, ignoreCase = true, ignoreDiacritics = true)
+                StyleSpan(Typeface.BOLD), BackgroundColorSpan(colorHighlight),
+                substring = highlight, ignoreCase = true, ignoreDiacritics = true
+            )
             b.messageSender.text = b.messageSender.text.asSpannable(
-                    StyleSpan(Typeface.BOLD), BackgroundColorSpan(colorHighlight),
-                    substring = highlight, ignoreCase = true, ignoreDiacritics = true)
+                StyleSpan(Typeface.BOLD), BackgroundColorSpan(colorHighlight),
+                substring = highlight, ignoreCase = true, ignoreDiacritics = true
+            )
         }
 
         adapter.onItemClick?.let { listener ->

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/messages/viewholder/SearchViewHolder.kt

@@ -9,38 +9,43 @@ import android.view.ViewGroup
 import androidx.appcompat.app.AppCompatActivity
 import androidx.recyclerview.widget.RecyclerView
 import pl.szczodrzynski.edziennik.App
+import pl.szczodrzynski.edziennik.R
 import pl.szczodrzynski.edziennik.databinding.MessagesListItemSearchBinding
 import pl.szczodrzynski.edziennik.ui.modules.grades.viewholder.BindableViewHolder
 import pl.szczodrzynski.edziennik.ui.modules.messages.MessagesAdapter
 import pl.szczodrzynski.edziennik.ui.modules.messages.models.MessagesSearch
+import pl.szczodrzynski.edziennik.ui.modules.messages.utils.SearchTextWatcher
 
 class SearchViewHolder(
-        inflater: LayoutInflater,
-        parent: ViewGroup,
-        val b: MessagesListItemSearchBinding = MessagesListItemSearchBinding.inflate(inflater, parent, false)
+    inflater: LayoutInflater,
+    parent: ViewGroup,
+    val b: MessagesListItemSearchBinding = MessagesListItemSearchBinding.inflate(
+        inflater,
+        parent,
+        false
+    )
 ) : RecyclerView.ViewHolder(b.root), BindableViewHolder<MessagesSearch, MessagesAdapter> {
     companion object {
         private const val TAG = "SearchViewHolder"
     }
 
-    override fun onBind(activity: AppCompatActivity, app: App, item: MessagesSearch, position: Int, adapter: MessagesAdapter) {
-        b.searchEdit.removeTextChangedListener(adapter.textWatcher)
-        b.searchEdit.addTextChangedListener(adapter.textWatcher)
+    override fun onBind(
+        activity: AppCompatActivity,
+        app: App,
+        item: MessagesSearch,
+        position: Int,
+        adapter: MessagesAdapter
+    ) {
+        val watcher = SearchTextWatcher(b, adapter.filter, item)
+        b.searchEdit.removeTextChangedListener(watcher)
 
-        /*b.searchEdit.setOnKeyboardListener(object : TextInputKeyboardEdit.KeyboardListener {
-            override fun onStateChanged(keyboardEditText: TextInputKeyboardEdit, showing: Boolean) {
-                item.isFocused = showing
-            }
-        })*/
+        if (adapter.items.isEmpty() || adapter.items.size == adapter.allItems.size)
+            b.searchLayout.helperText = " "
+        else
+            b.searchLayout.helperText =
+                b.root.context.getString(R.string.messages_search_results, adapter.items.size - 1)
+        b.searchEdit.setText(item.searchText)
 
-        /*if (b.searchEdit.text.toString() != item.searchText) {
-            b.searchEdit.setText(item.searchText)
-            b.searchEdit.setSelection(item.searchText.length)
-        }*/
-
-        //b.searchLayout.helperText = app.getString(R.string.messages_search_results, item.count)
-
-        /*if (item.isFocused && !b.searchEdit.isFocused)
-            b.searchEdit.requestFocus()*/
+        b.searchEdit.addTextChangedListener(watcher)
     }
 }