[UI/Dialogs] Add context menu for teachers' names. (#21)

* [UI] Rearrange BetterLink code.

* [UI/Dialogs] Add context menu for teachers' names.

* [Proguard] Update rules for BetterLink reflection.

* [Proguard] Fix rules for BetterLink reflection.

app/proguard-rules.pro

@@ -32,8 +32,9 @@
 -keepnames class pl.szczodrzynski.edziennik.ui.widgets.luckynumber.WidgetLuckyNumberProvider
 
 -keepnames class androidx.appcompat.view.menu.MenuBuilder { setHeaderTitleInt(java.lang.CharSequence); }
--keepclassmembernames class androidx.appcompat.view.menu.StandardMenuPopup { private *; }
 -keepnames class androidx.appcompat.view.menu.MenuPopupHelper { showPopup(int, int, boolean, boolean); }
+-keepclassmembernames class androidx.appcompat.view.menu.StandardMenuPopup { private *; }
+-keepclassmembernames class androidx.appcompat.view.menu.MenuItemImpl { private *; }
 
 -keepclassmembernames class com.mikepenz.materialdrawer.widget.MiniDrawerSliderView { private *; }
 

app/src/main/java/pl/szczodrzynski/edziennik/ui/dialogs/event/EventDetailsDialog.kt

@@ -199,10 +199,14 @@ class EventDetailsDialog(
         }
         b.downloadButton.attachToastHint(R.string.hint_download_again)
 
+        BetterLink.attach(b.topic, onActionSelected = dialog::dismiss)
 
-        b.topic.text = event.topic
+        event.teacherName?.let { name ->
-        BetterLink.attach(b.topic) {
+            BetterLink.attach(
-            dialog.dismiss()
+                b.teacherName,
+                teachers = mapOf(event.teacherId to name),
+                onActionSelected = dialog::dismiss
+            )
         }
 
         if (event.homeworkBody == null && !event.addedManually && event.type == Event.TYPE_HOMEWORK) {
@@ -220,10 +224,7 @@ class EventDetailsDialog(
             b.bodyTitle.isVisible = true
             b.bodyProgressBar.isVisible = false
             b.body.isVisible = true
-            b.body.text = event.homeworkBody
+            BetterLink.attach(b.body, onActionSelected = dialog::dismiss)
-            BetterLink.attach(b.body) {
-                dialog.dismiss()
-            }
         }
 
         if (event.attachmentIds.isNullOrEmpty() || event.attachmentNames.isNullOrEmpty()) {

app/src/main/java/pl/szczodrzynski/edziennik/ui/dialogs/grade/GradeDetailsDialog.kt

@@ -14,6 +14,7 @@ import pl.szczodrzynski.edziennik.databinding.DialogGradeDetailsBinding
 import pl.szczodrzynski.edziennik.onClick
 import pl.szczodrzynski.edziennik.setTintColor
 import pl.szczodrzynski.edziennik.ui.modules.grades.GradesAdapter
+import pl.szczodrzynski.edziennik.utils.BetterLink
 import pl.szczodrzynski.edziennik.utils.SimpleDividerItemDecoration
 import kotlin.coroutines.CoroutineContext
 
@@ -68,6 +69,14 @@ class GradeDetailsDialog(
             GradesConfigDialog(activity, reloadOnDismiss = true)
         }
 
+        grade.teacherName?.let { name ->
+            BetterLink.attach(
+                b.teacherName,
+                teachers = mapOf(grade.teacherId to name),
+                onActionSelected = dialog::dismiss
+            )
+        }
+
         launch {
             val historyList = withContext(Dispatchers.Default) {
                 app.db.gradeDao().getByParentIdNow(App.profileId, grade.id)

app/src/main/java/pl/szczodrzynski/edziennik/ui/dialogs/timetable/LessonDetailsDialog.kt

@@ -25,6 +25,7 @@ import pl.szczodrzynski.edziennik.ui.dialogs.event.EventDetailsDialog
 import pl.szczodrzynski.edziennik.ui.dialogs.event.EventListAdapter
 import pl.szczodrzynski.edziennik.ui.dialogs.event.EventManualDialog
 import pl.szczodrzynski.edziennik.ui.modules.timetable.TimetableFragment
+import pl.szczodrzynski.edziennik.utils.BetterLink
 import pl.szczodrzynski.edziennik.utils.SimpleDividerItemDecoration
 import pl.szczodrzynski.edziennik.utils.models.Date
 import pl.szczodrzynski.edziennik.utils.models.Week
@@ -216,5 +217,19 @@ class LessonDetailsDialog(
                 b.eventsNoData.visibility = View.VISIBLE
             }
         })
+
+        lesson.displayTeacherName?.let { name ->
+            lesson.displayTeacherId ?: return@let
+            BetterLink.attach(
+                b.teacherNameView,
+                teachers = mapOf(lesson.displayTeacherId!! to name),
+                onActionSelected = dialog::dismiss
+            )
+            BetterLink.attach(
+                b.oldTeacherNameView,
+                teachers = mapOf(lesson.displayTeacherId!! to name),
+                onActionSelected = dialog::dismiss
+            )
+        }
     }
 }

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/attendance/AttendanceDetailsDialog.kt

@@ -16,6 +16,7 @@ import pl.szczodrzynski.edziennik.R
 import pl.szczodrzynski.edziennik.data.db.full.AttendanceFull
 import pl.szczodrzynski.edziennik.databinding.AttendanceDetailsDialogBinding
 import pl.szczodrzynski.edziennik.setTintColor
+import pl.szczodrzynski.edziennik.utils.BetterLink
 import kotlin.coroutines.CoroutineContext
 
 class AttendanceDetailsDialog(
@@ -60,5 +61,13 @@ class AttendanceDetailsDialog(
         b.attendanceName.background.setTintColor(attendanceColor)
 
         b.attendanceIsCounted.setText(if (attendance.isCounted) R.string.yes else R.string.no)
+
+        attendance.teacherName?.let { name ->
+            BetterLink.attach(
+                b.teacherName,
+                teachers = mapOf(attendance.teacherId to name),
+                onActionSelected = dialog::dismiss
+            )
+        }
     }}
 }

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/behaviour/NoticesAdapter.kt

@@ -21,6 +21,7 @@ import pl.szczodrzynski.edziennik.R
 import pl.szczodrzynski.edziennik.data.api.LOGIN_TYPE_MOBIDZIENNIK
 import pl.szczodrzynski.edziennik.data.db.entity.Notice
 import pl.szczodrzynski.edziennik.data.db.full.NoticeFull
+import pl.szczodrzynski.edziennik.utils.BetterLink
 import pl.szczodrzynski.edziennik.utils.Utils.bs
 import pl.szczodrzynski.edziennik.utils.models.Date
 
@@ -83,6 +84,14 @@ class NoticesAdapter//getting the context and product list with constructor
         } else {
             holder.noticesItemReason.background = null
         }
+
+        BetterLink.attach(holder.noticesItemReason)
+
+        notice.teacherName?.let { name ->
+            BetterLink.attach(holder.noticesItemTeacherName, teachers = mapOf(
+                notice.teacherId to name
+            ))
+        }
     }
 
     override fun getItemCount(): Int {

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

@@ -345,6 +345,7 @@ class MessagesComposeFragment : Fragment(), CoroutineScope {
         b.recipients.setAdapter(adapter)
 
         handleReplyMessage()
+        handleMailToIntent()
     }}
 
     private fun handleReplyMessage() { launch {
@@ -402,6 +403,22 @@ class MessagesComposeFragment : Fragment(), CoroutineScope {
         }
     }}
 
+    private fun handleMailToIntent() {
+        val teacherId = arguments?.getLong("messageRecipientId")
+        if (teacherId == 0L)
+            return
+
+        val chipList = mutableListOf<ChipInfo>()
+        teachers.firstOrNull { it.id == teacherId }?.let { teacher ->
+            teacher.image = getProfileImage(48, 24, 16, 12, 1, teacher.fullName)
+            chipList += ChipInfo(teacher.fullName, teacher)
+        }
+        b.recipients.addTextWithChips(chipList)
+
+        val subject = arguments?.getString("messageSubject")
+        b.subject.setText(subject ?: return)
+    }
+
     private fun sendMessage() {
         b.recipientsLayout.error = null
         b.subjectLayout.error = null

app/src/main/java/pl/szczodrzynski/edziennik/utils/BetterLink.kt

@@ -7,6 +7,8 @@
 package pl.szczodrzynski.edziennik.utils
 
 import android.annotation.SuppressLint
+import android.content.Context
+import android.content.Intent
 import android.graphics.Color
 import android.text.Spannable
 import android.text.SpannableString
@@ -19,141 +21,268 @@ import android.view.ViewGroup
 import android.widget.TextView
 import androidx.appcompat.view.menu.MenuBuilder
 import androidx.appcompat.view.menu.MenuPopupHelper
-import pl.szczodrzynski.edziennik.Intent
+import androidx.core.widget.addTextChangedListener
-import pl.szczodrzynski.edziennik.copyToClipboard
+import pl.szczodrzynski.edziennik.*
 import pl.szczodrzynski.edziennik.data.api.Regexes
-import pl.szczodrzynski.edziennik.get
-import pl.szczodrzynski.edziennik.getTextPosition
 import pl.szczodrzynski.edziennik.utils.models.Date
 
+@SuppressLint("RestrictedApi")
 object BetterLink {
 
-    @SuppressLint("RestrictedApi")
+    /**
-    fun attach(textView: TextView, onActionSelected: (() -> Unit)? = null) {
+     * Used in conjunction with the item's ID to execute the
-        textView.autoLinkMask = Linkify.WEB_URLS or Linkify.EMAIL_ADDRESSES
+     * [attach]'s onActionSelected listener when the item is
-        BetterLinkMovementMethod.linkify(textView.autoLinkMask, textView).setOnLinkClickListener { v, span: BetterLinkMovementMethod.ClickableSpanWithText ->
+     * clicked.
-            val url = span.text()
+     */
-            val c = v.context
+    private const val FLAG_ACTION = 0x8000
 
-            val s = v.text as Spanned
+    private fun MenuBuilder.setTitle(title: CharSequence): MenuBuilder {
-            val start = s.getSpanStart(span.span())
+        this::class.java.getDeclaredMethod("setHeaderTitleInt", CharSequence::class.java).let {
-            val end = s.getSpanEnd(span.span())
+            it.isAccessible = true
+            it.invoke(this, title)
+        }
+        return this
+    }
 
-            val parent = v.rootView.findViewById<ViewGroup>(android.R.id.content)
+    private fun MenuItem.addListener(listener: (item: MenuItem) -> Boolean): MenuItem {
+        this::class.java.getDeclaredField("mClickListener").let {
+            it.isAccessible = true
+            val oldListener = it.get(this) as? MenuItem.OnMenuItemClickListener
+            it.set(this, object : MenuItem.OnMenuItemClickListener {
+                override fun onMenuItemClick(item: MenuItem): Boolean {
+                    oldListener?.onMenuItemClick(item)
+                    return listener(item)
+                }
+            })
+        }
+        return this
+    }
+
+    private fun createUrlItems(menu: MenuBuilder, context: Context, url: String) {
+        menu.setTitle(url)
+        menu.add(
+            1,
+            2,
+            2,
+            "Otwórz w przeglądarce"
+        ).setOnMenuItemClickListener {
+            Utils.openUrl(context, url)
+            true
+        }
+    }
+
+    private fun createMailtoItems(menu: MenuBuilder, context: Context, url: String) {
+        menu.add(
+            1,
+            3,
+            3,
+            "Napisz e-mail"
+        ).setOnMenuItemClickListener {
+            Utils.openUrl(context, url)
+            true
+        }
+    }
+
+    private fun createDateItems(menu: MenuBuilder, context: Context, date: Date?) {
+        date ?: return
+        menu.setTitle(date.formattedString)
+        menu.add(
+            1,
+            4 or FLAG_ACTION,
+            4,
+            "Utwórz wydarzenie"
+        ).setOnMenuItemClickListener {
+            val intent = Intent(
+                Intent.ACTION_MAIN,
+                "action" to "createManualEvent",
+                "eventDate" to date.stringY_m_d
+            )
+            context.sendBroadcast(intent)
+            true
+        }
+    }
+
+    private fun createTeacherItems(menu: MenuBuilder, context: Context, teacherId: Long, fullName: String) {
+        menu.setTitle(fullName)
+        menu.add(
+            1,
+            5 or FLAG_ACTION,
+            5,
+            "Napisz wiadomość"
+        ).setOnMenuItemClickListener {
+            val intent = Intent(
+                Intent.ACTION_MAIN,
+                "fragmentId" to MainActivity.TARGET_MESSAGES_COMPOSE,
+                "messageRecipientId" to teacherId
+            )
+            context.sendBroadcast(intent)
+            true
+        }
+    }
+
+    private fun onClickListener(
+        view: TextView,
+        span: BetterLinkMovementMethod.ClickableSpanWithText,
+        onActionSelected: (() -> Unit)?
+    ): Boolean {
+        val context = view.context
+
+        val spanned = view.text as Spanned
+        val start = spanned.getSpanStart(span.span())
+        val end = spanned.getSpanEnd(span.span())
+
+        val parent = view.rootView.findViewById<ViewGroup>(android.R.id.content)
         val parentLocation = intArrayOf(0, 0)
         parent.getLocationOnScreen(parentLocation)
 
-            val rect = textView.getTextPosition(start..end)
+        val rect = view.getTextPosition(start..end)
 
-            val view = View(c)
+        val popupView = View(context)
-            view.layoutParams = ViewGroup.LayoutParams(rect.width(), rect.height())
+        popupView.layoutParams = ViewGroup.LayoutParams(rect.width(), rect.height())
-            view.setBackgroundColor(Color.TRANSPARENT)
+        popupView.setBackgroundColor(Color.TRANSPARENT)
 
-            parent.addView(view)
+        parent.addView(popupView)
 
-            view.x = rect.left.toFloat() - parentLocation[0]
+        popupView.x = rect.left.toFloat() - parentLocation[0]
-            view.y = rect.top.toFloat() - parentLocation[1]
+        popupView.y = rect.top.toFloat() - parentLocation[1]
 
-            val menu = MenuBuilder(c)
+        val menu = MenuBuilder(context)
-            val helper = MenuPopupHelper(c, menu, view)
+        val helper = MenuPopupHelper(context, menu, popupView)
         val popup = helper.popup
 
-            var menuTitle = url.substringAfter(":")
+        val spanUrl = span.text()
-            var date: Date? = null
+        val spanParameter = spanUrl.substringAfter(":")
+        val spanText = spanned.substring(start, end)
 
-            var urlItem: MenuItem? = null
+        //goToTimetableItem = menu.add(1, 11, 3, "Idź do planu lekcji")
-            var createEventItem: MenuItem? = null
-            //var goToTimetableItem: MenuItem? = null // TODO 2020-03-19: implement this
-            var mailItem: MenuItem? = null
-            var copyItem: MenuItem? = null
 
+        // create appropriate items for spans
         when {
-                url.startsWith("mailto:") -> {
+            spanUrl.startsWith("mailto:") -> createMailtoItems(menu, context, spanUrl)
-                    mailItem = menu.add(1, 20, 2, "Napisz e-mail")
+            spanUrl.startsWith("dateYmd:") -> createDateItems(menu, context, parseDateYmd(spanParameter))
-                }
+            spanUrl.startsWith("dateDmy:") -> createDateItems(menu, context, parseDateDmy(spanParameter))
-                url.startsWith("dateYmd:") -> {
+            spanUrl.startsWith("dateAbs:") -> createDateItems(menu, context, parseDateAbs(spanParameter))
-                    createEventItem = menu.add(1, 10, 2, "Utwórz wydarzenie")
+            spanUrl.startsWith("dateRel:") -> createDateItems(menu, context, parseDateRel(spanParameter))
-                    //goToTimetableItem = menu.add(1, 11, 3, "Idź do planu lekcji")
+            spanUrl.startsWith("teacher:") -> createTeacherItems(
-                    date = parseDateYmd(menuTitle)
+                menu,
-                }
+                context,
-                url.startsWith("dateDmy:") -> {
+                teacherId = spanParameter.toLongOrNull() ?: -1,
-                    createEventItem = menu.add(1, 10, 2, "Utwórz wydarzenie")
+                fullName = spanText
-                    //goToTimetableItem = menu.add(1, 11, 3, "Idź do planu lekcji")
-                    date = parseDateDmy(menuTitle)
-                }
-                url.startsWith("dateAbs:") -> {
-                    createEventItem = menu.add(1, 10, 2, "Utwórz wydarzenie")
-                    //goToTimetableItem = menu.add(1, 11, 3, "Idź do planu lekcji")
-                    date = parseDateAbs(menuTitle)
-                }
-                url.startsWith("dateRel:") -> {
-                    createEventItem = menu.add(1, 10, 2, "Utwórz wydarzenie")
-                    //goToTimetableItem = menu.add(1, 11, 3, "Idź do planu lekcji")
-                    date = parseDateRel(menuTitle)
-                }
-                else -> {
-                    urlItem = menu.add(1, 1, 2, "Otwórz w przeglądarce")
-                    menuTitle = url
-                }
-            }
-            copyItem = menu.add(1, 1000, 1000, "Kopiuj tekst")
-
-            helper.setOnDismissListener { parent.removeView(view) }
-
-            urlItem?.setOnMenuItemClickListener { Utils.openUrl(c, url); true }
-            mailItem?.setOnMenuItemClickListener { Utils.openUrl(c, url); true }
-            copyItem?.setOnMenuItemClickListener { menuTitle.copyToClipboard(c); true }
-            createEventItem?.setOnMenuItemClickListener {
-                onActionSelected?.invoke()
-                val intent = Intent(
-                        android.content.Intent.ACTION_MAIN,
-                        "action" to "createManualEvent",
-                        "eventDate" to date?.stringY_m_d
             )
-                c.sendBroadcast(intent)
+            else -> createUrlItems(menu, context, spanUrl)
+        }
+        menu.add(1, 1000, 1000, "Kopiuj tekst").setOnMenuItemClickListener {
+            spanParameter.copyToClipboard(context)
             true
         }
 
-            menu::class.java.getDeclaredMethod("setHeaderTitleInt", CharSequence::class.java).let {
+        helper.setOnDismissListener { parent.removeView(popupView) }
-                it.isAccessible = true
+
-                it.invoke(menu, menuTitle)
+        menu.visibleItems.forEach { item ->
+            if ((item.itemId and FLAG_ACTION) != FLAG_ACTION)
+                return@forEach
+            item.addListener {
+                onActionSelected?.invoke()
+                true
             }
+        }
+
         popup::class.java.getDeclaredField("mShowTitle").let {
             it.isAccessible = true
             it.set(popup, true)
         }
-            helper::class.java.getDeclaredMethod("showPopup", Int::class.java, Int::class.java, Boolean::class.java, Boolean::class.java).let {
+        helper::class.java.getDeclaredMethod(
+            "showPopup",
+            Int::class.java,
+            Int::class.java,
+            Boolean::class.java,
+            Boolean::class.java
+        ).let {
             it.isAccessible = true
             it.invoke(helper, 0, 0, false, true)
         }
-            true
+        return true
     }
 
-        val spanned = textView.text as? Spannable ?: {
+    fun attach(
-            SpannableString(textView.text)
+        textView: TextView,
-        }()
+        teachers: Map<Long, String>? = null,
+        onActionSelected: (() -> Unit)? = null
+    ) {
+        textView.autoLinkMask = Linkify.WEB_URLS or Linkify.EMAIL_ADDRESSES
+
+        BetterLinkMovementMethod
+            .linkify(textView.autoLinkMask, textView)
+            .setOnLinkClickListener { view, span ->
+                onClickListener(view, span, onActionSelected)
+            }
+
+        textView.addTextChangedListener {
+            attachSpan(textView, teachers)
+        }
+
+        attachSpan(textView, teachers)
+    }
+
+    private fun attachSpan(
+        textView: TextView,
+        teachers: Map<Long, String>? = null
+    ) {
+        val spanned = textView.text as? Spannable ?: SpannableString(textView.text)
+
+        teachers?.forEach { (id, fullName) ->
+            val index = textView.text.indexOf(fullName)
+            if (index == -1)
+                return@forEach
+            val span = URLSpan("teacher:$id")
+            spanned.setSpan(
+                span,
+                index,
+                index + fullName.length,
+                Spanned.SPAN_EXCLUSIVE_EXCLUSIVE
+            )
+        }
 
         Regexes.LINKIFY_DATE_YMD.findAll(textView.text).forEach { match ->
             val span = URLSpan("dateYmd:" + match.value)
-            spanned.setSpan(span, match.range.first, match.range.last + 1, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE)
+            spanned.setSpan(
+                span,
+                match.range.first,
+                match.range.last + 1,
+                Spanned.SPAN_EXCLUSIVE_EXCLUSIVE
+            )
         }
         Regexes.LINKIFY_DATE_DMY.findAll(textView.text).forEach { match ->
             val span = URLSpan("dateDmy:" + match.value)
-            spanned.setSpan(span, match.range.first, match.range.last + 1, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE)
+            spanned.setSpan(
+                span,
+                match.range.first,
+                match.range.last + 1,
+                Spanned.SPAN_EXCLUSIVE_EXCLUSIVE
+            )
         }
         Regexes.LINKIFY_DATE_ABSOLUTE.findAll(textView.text).forEach { match ->
             val span = URLSpan("dateAbs:" + match.value)
-            spanned.setSpan(span, match.range.first, match.range.last + 1, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE)
+            spanned.setSpan(
+                span,
+                match.range.first,
+                match.range.last + 1,
+                Spanned.SPAN_EXCLUSIVE_EXCLUSIVE
+            )
         }
         Regexes.LINKIFY_DATE_RELATIVE.findAll(textView.text).forEach { match ->
             val span = URLSpan("dateRel:" + match.value)
-            spanned.setSpan(span, match.range.first, match.range.last + 1, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE)
+            spanned.setSpan(
+                span,
+                match.range.first,
+                match.range.last + 1,
+                Spanned.SPAN_EXCLUSIVE_EXCLUSIVE
+            )
         }
-        //Linkify.addLinks(textView, LINKIFY_DATE_ABSOLUTE.toPattern(), "dateAbs:")
-        //Linkify.addLinks(textView, LINKIFY_DATE_RELATIVE.toPattern(), "dateRel:")
     }
 
-    private val monthNames = listOf("sty", "lut", "mar", "kwi", "maj", "cze", "lip", "sie", "wrz", "paź", "lis", "gru")
+    private val monthNames =
+        listOf("sty", "lut", "mar", "kwi", "maj", "cze", "lip", "sie", "wrz", "paź", "lis", "gru")
 
     private fun parseDateYmd(text: String): Date? {
         return Regexes.LINKIFY_DATE_YMD.find(text)?.let {
@@ -163,6 +292,7 @@ object BetterLink {
             Date(year, month, day)
         }
     }
+
     private fun parseDateDmy(text: String): Date? {
         return Regexes.LINKIFY_DATE_DMY.find(text)?.let {
             val day = it[1].toIntOrNull() ?: 1
@@ -194,7 +324,7 @@ object BetterLink {
                 else -> 1
             }
 
-            date.stepForward(0, 0, amount*unitInDays)
+            date.stepForward(0, 0, amount * unitInDays)
         }
     }
 }

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

@@ -94,6 +94,7 @@
                 android:textAppearance="@style/NavView.TextView.Helper" />
 
             <TextView
+                android:id="@+id/teacherName"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 android:layout_marginTop="0dp"

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

@@ -112,6 +112,7 @@
                 android:text="@string/dialog_event_details_teacher"
                 android:visibility="@{event.teacherName != null ? View.VISIBLE : View.GONE}"/>
             <TextView
+                android:id="@+id/teacherName"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 android:text="@{event.teacherName}"

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

@@ -121,6 +121,7 @@
                 android:textAppearance="@style/NavView.TextView.Helper" />
 
             <TextView
+                android:id="@+id/teacherName"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 android:layout_marginTop="0dp"

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

@@ -176,6 +176,7 @@
                         android:textAppearance="@style/NavView.TextView.Helper"
                         android:text="@string/dialog_lesson_details_teacher" />
                     <TextView
+                        android:id="@+id/oldTeacherNameView"
                         android:layout_width="match_parent"
                         android:layout_height="wrap_content"
                         android:textAppearance="@style/NavView.TextView.Helper"
@@ -186,6 +187,7 @@
                         app:strikeThrough="@{true}"
                         tools:text="Janósz Kowalski" />
                     <TextView
+                        android:id="@+id/teacherNameView"
                         android:layout_width="match_parent"
                         android:layout_height="wrap_content"
                         android:text="@{teacherName}"