Clean code

.idea/codeStyles/Project.xml

@@ -1,5 +1,6 @@
 <component name="ProjectCodeStyleConfiguration">
   <code_scheme name="Project" version="173">
+    <option name="RIGHT_MARGIN" value="160" />
     <AndroidXmlCodeStyleSettings>
       <option name="ARRANGEMENT_SETTINGS_MIGRATED_TO_191" value="true" />
     </AndroidXmlCodeStyleSettings>

.idea/codeStyles/codeStyleConfig.xml

@@ -1,6 +1,5 @@
 <component name="ProjectCodeStyleConfiguration">
   <state>
     <option name="USE_PER_PROJECT_SETTINGS" value="true" />
-    <option name="PREFERRED_PROJECT_CODE_STYLE" value="Default" />
   </state>
 </component>

matrix-sdk-android/src/androidTest/java/im/vector/matrix/android/common/CommonTestHelper.kt

@@ -118,7 +118,7 @@ class CommonTestHelper(context: Context) {
             }
 
             override fun onNewTimelineEvents(eventIds: List<String>) {
-                //noop
+                // noop
             }
 
             override fun onTimelineUpdated(snapshot: List<TimelineEvent>) {

matrix-sdk-android/src/main/java/im/vector/matrix/android/api/session/room/read/ReadService.kt

@@ -26,7 +26,7 @@ import im.vector.matrix.android.api.util.Optional
  */
 interface ReadService {
 
-    enum class MarkAsReadParams{
+    enum class MarkAsReadParams {
         READ_RECEIPT,
         READ_MARKER,
         BOTH

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/crypto/DefaultCryptoService.kt

@@ -70,7 +70,6 @@ import im.vector.matrix.android.internal.crypto.tasks.UploadKeysTask
 import im.vector.matrix.android.internal.crypto.verification.DefaultVerificationService
 import im.vector.matrix.android.internal.database.model.EventEntity
 import im.vector.matrix.android.internal.database.model.EventEntityFields
-import im.vector.matrix.android.internal.database.query.where
 import im.vector.matrix.android.internal.database.query.whereType
 import im.vector.matrix.android.internal.di.MoshiProvider
 import im.vector.matrix.android.internal.extensions.foldToCallback

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/crypto/DeviceListManager.kt

@@ -320,7 +320,6 @@ internal class DeviceListManager @Inject constructor(private val cryptoStore: IM
             // al devices =
             val models = response.deviceKeys?.get(userId)?.mapValues { entry -> CryptoInfoMapper.map(entry.value) }
 
-
             Timber.v("## doKeyDownloadForUsers() : Got keys for $userId : $models")
             if (!models.isNullOrEmpty()) {
                 val workingCopy = models.toMutableMap()

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/database/helper/ChunkEntityHelper.kt

@@ -36,7 +36,6 @@ import im.vector.matrix.android.internal.session.room.timeline.PaginationDirecti
 import io.realm.Realm
 import io.realm.Sort
 import io.realm.kotlin.createObject
-import kotlinx.coroutines.coroutineScope
 import timber.log.Timber
 
 internal fun ChunkEntity.deleteOnCascade() {
@@ -110,7 +109,6 @@ internal fun ChunkEntity.addTimelineEvent(roomId: String,
                                           eventEntity: EventEntity,
                                           direction: PaginationDirection,
                                           roomMemberContentsByUser: HashMap<String, RoomMemberContent?>) {
-
     val eventId = eventEntity.eventId
     if (timelineEvents.find(eventId) != null) {
         return
@@ -134,8 +132,7 @@ internal fun ChunkEntity.addTimelineEvent(roomId: String,
         this.senderName = roomMemberContent?.displayName
         if (roomMemberContent?.displayName != null) {
             val isHistoricalUnique = roomMemberContentsByUser.values.find {
-                roomMemberContent != it &&
+                it != roomMemberContent && it?.displayName == roomMemberContent.displayName
-                        it?.displayName == roomMemberContent.displayName
             } == null
             isUniqueDisplayName = if (isLastForward) {
                 val isLiveUnique = RoomMemberSummaryEntity

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/database/model/CurrentStateEventEntity.kt

@@ -19,7 +19,6 @@ package im.vector.matrix.android.internal.database.model
 
 import io.realm.RealmObject
 import io.realm.annotations.Index
-import io.realm.annotations.PrimaryKey
 
 internal open class CurrentStateEventEntity(var eventId: String = "",
                                             var root: EventEntity? = null,

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/database/model/EventEntity.kt

@@ -21,9 +21,7 @@ import im.vector.matrix.android.internal.crypto.MXEventDecryptionResult
 import im.vector.matrix.android.internal.crypto.algorithms.olm.OlmDecryptionResult
 import im.vector.matrix.android.internal.di.MoshiProvider
 import io.realm.RealmObject
-import io.realm.RealmResults
 import io.realm.annotations.Index
-import io.realm.annotations.LinkingObjects
 import io.realm.annotations.PrimaryKey
 
 internal open class EventEntity(@PrimaryKey var eventId: String = "",

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/database/model/TimelineEventEntity.kt

@@ -20,7 +20,6 @@ import io.realm.RealmObject
 import io.realm.RealmResults
 import io.realm.annotations.Index
 import io.realm.annotations.LinkingObjects
-import io.realm.annotations.PrimaryKey
 
 internal open class TimelineEventEntity(var localId: Long = 0,
                                         @Index var eventId: String = "",

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/database/query/CurrentStateEventEntityQueries.kt

@@ -29,7 +29,8 @@ internal fun CurrentStateEventEntity.Companion.where(realm: Realm, roomId: Strin
             .equalTo(CurrentStateEventEntityFields.TYPE, type)
 }
 
-internal fun CurrentStateEventEntity.Companion.whereStateKey(realm: Realm, roomId: String, type: String, stateKey: String): RealmQuery<CurrentStateEventEntity> {
+internal fun CurrentStateEventEntity.Companion.whereStateKey(realm: Realm, roomId: String, type: String, stateKey: String)
+        : RealmQuery<CurrentStateEventEntity> {
     return where(realm = realm, roomId = roomId, type = type)
             .equalTo(CurrentStateEventEntityFields.STATE_KEY, stateKey)
 }
@@ -49,5 +50,3 @@ private fun create(realm: Realm, roomId: String, stateKey: String, type: String)
         this.stateKey = stateKey
     }
 }
-
-

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/database/query/TimelineEventEntityQueries.kt

@@ -35,7 +35,8 @@ internal fun TimelineEventEntity.Companion.where(realm: Realm, roomId: String, e
 
 internal fun TimelineEventEntity.Companion.whereRoomId(realm: Realm,
                                                        roomId: String): RealmQuery<TimelineEventEntity> {
-    return realm.where<TimelineEventEntity>().equalTo(TimelineEventEntityFields.ROOM_ID, roomId)
+    return realm.where<TimelineEventEntity>()
+            .equalTo(TimelineEventEntityFields.ROOM_ID, roomId)
 }
 
 internal fun TimelineEventEntity.Companion.findWithSenderMembershipEvent(realm: Realm, senderMembershipEventId: String): List<TimelineEventEntity> {

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/di/MatrixComponent.kt

@@ -26,7 +26,6 @@ import im.vector.matrix.android.api.auth.AuthenticationService
 import im.vector.matrix.android.internal.SessionManager
 import im.vector.matrix.android.internal.auth.AuthModule
 import im.vector.matrix.android.internal.auth.SessionParamsStore
-import im.vector.matrix.android.internal.network.NetworkConnectivityChecker
 import im.vector.matrix.android.internal.task.TaskExecutor
 import im.vector.matrix.android.internal.util.BackgroundDetectionObserver
 import im.vector.matrix.android.internal.util.MatrixCoroutineDispatchers

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/network/NetworkCallbackStrategy.kt

@@ -21,6 +21,7 @@ import android.content.Context
 import android.content.IntentFilter
 import android.net.ConnectivityManager
 import android.net.Network
+import android.os.Build
 import javax.inject.Inject
 
 internal interface NetworkCallbackStrategy {
@@ -47,7 +48,7 @@ internal class FallbackNetworkCallbackStrategy @Inject constructor(private val c
     }
 }
 
-@TargetApi(android.os.Build.VERSION_CODES.N)
+@TargetApi(Build.VERSION_CODES.N)
 internal class PreferredNetworkCallbackStrategy @Inject constructor(context: Context) : NetworkCallbackStrategy {
 
     private var hasChangedCallback: (() -> Unit)? = null

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/network/NetworkConnectivityChecker.kt

@@ -42,10 +42,10 @@ interface NetworkConnectivityChecker {
 }
 
 @SessionScope
-internal class DefaultNetworkConnectivityChecker @Inject constructor(private val coroutineDispatchers: MatrixCoroutineDispatchers,
+internal class DefaultNetworkConnectivityChecker @Inject constructor(private val homeServerPinger: HomeServerPinger,
-                                                                     private val homeServerPinger: HomeServerPinger,
                                                                      private val backgroundDetectionObserver: BackgroundDetectionObserver,
-                                                                     private val networkCallbackStrategy: NetworkCallbackStrategy) : NetworkConnectivityChecker {
+                                                                     private val networkCallbackStrategy: NetworkCallbackStrategy)
+    : NetworkConnectivityChecker {
 
     private val hasInternetAccess = AtomicBoolean(true)
     private val listeners = Collections.synchronizedSet(LinkedHashSet<NetworkConnectivityChecker.Listener>())

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/SessionModule.kt

@@ -17,6 +17,7 @@
 package im.vector.matrix.android.internal.session
 
 import android.content.Context
+import android.os.Build
 import com.zhuinden.monarchy.Monarchy
 import dagger.Binds
 import dagger.Lazy
@@ -194,7 +195,7 @@ internal abstract class SessionModule {
         fun providesNetworkCallbackStrategy(fallbackNetworkCallbackStrategy: Provider<FallbackNetworkCallbackStrategy>,
                                             preferredNetworkCallbackStrategy: Provider<PreferredNetworkCallbackStrategy>
         ): NetworkCallbackStrategy {
-            return if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.N) {
+            return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
                 preferredNetworkCallbackStrategy.get()
             } else {
                 fallbackNetworkCallbackStrategy.get()
@@ -241,4 +242,3 @@ internal abstract class SessionModule {
     @Binds
     abstract fun bindHomeServerCapabilitiesService(homeServerCapabilitiesService: DefaultHomeServerCapabilitiesService): HomeServerCapabilitiesService
 }
-

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/homeserver/CapabilitiesAPI.kt

@@ -31,6 +31,6 @@ internal interface CapabilitiesAPI {
     /**
      * Request the versions
      */
-    @GET(NetworkConstants.URI_API_PREFIX_PATH_+"versions")
+    @GET(NetworkConstants.URI_API_PREFIX_PATH_ + "versions")
     fun getVersions(): Call<Unit>
 }

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/homeserver/HomeserverPinger.kt

@@ -19,7 +19,6 @@ package im.vector.matrix.android.internal.session.homeserver
 import im.vector.matrix.android.api.failure.Failure
 import im.vector.matrix.android.internal.network.executeRequest
 import im.vector.matrix.android.internal.task.TaskExecutor
-import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
 import javax.inject.Inject
 

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/RoomSummaryUpdater.kt

@@ -24,7 +24,6 @@ import im.vector.matrix.android.api.session.room.model.RoomAliasesContent
 import im.vector.matrix.android.api.session.room.model.RoomCanonicalAliasContent
 import im.vector.matrix.android.api.session.room.model.RoomTopicContent
 import im.vector.matrix.android.internal.crypto.MXCRYPTO_ALGORITHM_MEGOLM
-import im.vector.matrix.android.internal.crypto.model.event.EncryptionEventContent
 import im.vector.matrix.android.internal.database.mapper.ContentMapper
 import im.vector.matrix.android.internal.database.model.CurrentStateEventEntity
 import im.vector.matrix.android.internal.database.model.EventEntity
@@ -36,7 +35,6 @@ import im.vector.matrix.android.internal.database.query.getOrCreate
 import im.vector.matrix.android.internal.database.query.getOrNull
 import im.vector.matrix.android.internal.database.query.isEventRead
 import im.vector.matrix.android.internal.database.query.latestEvent
-import im.vector.matrix.android.internal.database.query.where
 import im.vector.matrix.android.internal.database.query.whereType
 import im.vector.matrix.android.internal.di.UserId
 import im.vector.matrix.android.internal.session.room.membership.RoomDisplayNameResolver

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/draft/DefaultDraftService.kt

@@ -19,7 +19,6 @@ package im.vector.matrix.android.internal.session.room.draft
 import androidx.lifecycle.LiveData
 import com.squareup.inject.assisted.Assisted
 import com.squareup.inject.assisted.AssistedInject
-import com.zhuinden.monarchy.Monarchy
 import im.vector.matrix.android.api.MatrixCallback
 import im.vector.matrix.android.api.session.room.send.DraftService
 import im.vector.matrix.android.api.session.room.send.UserDraft

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/read/DefaultReadService.kt

@@ -122,5 +122,4 @@ internal class DefaultReadService @AssistedInject constructor(
     private fun ReadService.MarkAsReadParams.forceReadReceipt(): Boolean {
         return this == ReadService.MarkAsReadParams.READ_RECEIPT || this == ReadService.MarkAsReadParams.BOTH
     }
-
 }

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/read/SetReadMarkersTask.kt

@@ -25,7 +25,6 @@ import im.vector.matrix.android.internal.database.query.isReadMarkerMoreRecent
 import im.vector.matrix.android.internal.database.query.latestEvent
 import im.vector.matrix.android.internal.database.query.where
 import im.vector.matrix.android.internal.di.UserId
-import im.vector.matrix.android.internal.network.NetworkConnectivityChecker
 import im.vector.matrix.android.internal.network.executeRequest
 import im.vector.matrix.android.internal.session.room.RoomAPI
 import im.vector.matrix.android.internal.session.sync.ReadReceiptHandler

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/send/DefaultSendService.kt

@@ -16,12 +16,10 @@
 
 package im.vector.matrix.android.internal.session.room.send
 
-import android.content.Context
 import androidx.work.BackoffPolicy
 import androidx.work.ExistingWorkPolicy
 import androidx.work.OneTimeWorkRequest
 import androidx.work.Operation
-import androidx.work.WorkManager
 import com.squareup.inject.assisted.Assisted
 import com.squareup.inject.assisted.AssistedInject
 import com.zhuinden.monarchy.Monarchy

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/send/LocalEchoEventFactory.kt

@@ -48,7 +48,6 @@ import im.vector.matrix.android.api.session.room.model.relation.RelationDefaultC
 import im.vector.matrix.android.api.session.room.model.relation.ReplyToContent
 import im.vector.matrix.android.api.session.room.timeline.TimelineEvent
 import im.vector.matrix.android.api.session.room.timeline.getLastMessageContent
-import im.vector.matrix.android.internal.database.mapper.TimelineEventMapper
 import im.vector.matrix.android.internal.di.UserId
 import im.vector.matrix.android.internal.session.content.ThumbnailExtractor
 import im.vector.matrix.android.internal.session.room.send.pills.TextPillsUtils
@@ -57,7 +56,6 @@ import im.vector.matrix.android.internal.util.StringProvider
 import kotlinx.coroutines.launch
 import org.commonmark.parser.Parser
 import org.commonmark.renderer.html.HtmlRenderer
-import timber.log.Timber
 import javax.inject.Inject
 
 /**

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/timeline/DefaultTimeline.kt

@@ -27,7 +27,6 @@ import im.vector.matrix.android.api.session.room.send.SendState
 import im.vector.matrix.android.api.session.room.timeline.Timeline
 import im.vector.matrix.android.api.session.room.timeline.TimelineEvent
 import im.vector.matrix.android.api.session.room.timeline.TimelineSettings
-import im.vector.matrix.android.api.session.room.timeline.hasBeenEdited
 import im.vector.matrix.android.api.util.CancelableBag
 import im.vector.matrix.android.internal.database.mapper.TimelineEventMapper
 import im.vector.matrix.android.internal.database.mapper.asDomain
@@ -665,7 +664,6 @@ internal class DefaultTimeline(
         val params = GetContextOfEventTask.Params(roomId, eventId)
         cancelableBag += contextOfEventTask.configureWith(params) {
             callback = object : MatrixCallback<TokenChunkEventPersistor.Result> {
-
                 override fun onSuccess(data: TokenChunkEventPersistor.Result) {
                     postSnapshot()
                 }

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/timeline/TokenChunkEventPersistor.kt

@@ -28,7 +28,6 @@ import im.vector.matrix.android.internal.database.helper.deleteOnCascade
 import im.vector.matrix.android.internal.database.helper.merge
 import im.vector.matrix.android.internal.database.mapper.toEntity
 import im.vector.matrix.android.internal.database.model.ChunkEntity
-import im.vector.matrix.android.internal.database.model.CurrentStateEventEntityFields
 import im.vector.matrix.android.internal.database.model.RoomEntity
 import im.vector.matrix.android.internal.database.model.RoomSummaryEntity
 import im.vector.matrix.android.internal.database.model.TimelineEventEntity
@@ -168,13 +167,19 @@ internal class TokenChunkEventPersistor @Inject constructor(private val monarchy
 
     private fun handleReachEnd(realm: Realm, roomId: String, direction: PaginationDirection, currentChunk: ChunkEntity) {
         Timber.v("Reach end of $roomId")
+        roomId.isBlank()
         if (direction == PaginationDirection.FORWARDS) {
             val currentLiveChunk = ChunkEntity.findLastLiveChunkFromRoom(realm, roomId)
             if (currentChunk != currentLiveChunk) {
                 currentChunk.isLastForward = true
                 currentLiveChunk?.deleteOnCascade()
                 RoomSummaryEntity.where(realm, roomId).findFirst()?.apply {
-                    latestPreviewableEvent = TimelineEventEntity.latestEvent(realm, roomId, includesSending = true, filterTypes = RoomSummaryUpdater.PREVIEWABLE_TYPES)
+                    latestPreviewableEvent = TimelineEventEntity.latestEvent(
+                            realm,
+                            roomId,
+                            includesSending = true,
+                            filterTypes = RoomSummaryUpdater.PREVIEWABLE_TYPES
+                    )
                 }
             }
         } else {
@@ -237,7 +242,12 @@ internal class TokenChunkEventPersistor @Inject constructor(private val monarchy
         }
         if (shouldUpdateSummary) {
             val roomSummaryEntity = RoomSummaryEntity.getOrCreate(realm, roomId)
-            val latestPreviewableEvent = TimelineEventEntity.latestEvent(realm, roomId, includesSending = true, filterTypes = RoomSummaryUpdater.PREVIEWABLE_TYPES)
+            val latestPreviewableEvent = TimelineEventEntity.latestEvent(
+                    realm,
+                    roomId,
+                    includesSending = true,
+                    filterTypes = RoomSummaryUpdater.PREVIEWABLE_TYPES
+            )
             roomSummaryEntity.latestPreviewableEvent = latestPreviewableEvent
         }
         RoomEntity.where(realm, roomId).findFirst()?.addOrUpdate(currentChunk)

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/job/SyncService.kt

@@ -18,7 +18,6 @@ package im.vector.matrix.android.internal.session.sync.job
 import android.app.Service
 import android.content.Intent
 import android.os.IBinder
-import im.vector.matrix.android.BuildConfig
 import im.vector.matrix.android.api.Matrix
 import im.vector.matrix.android.api.failure.isTokenError
 import im.vector.matrix.android.api.session.Session

tools/check/forbidden_strings_in_code.txt

@@ -158,4 +158,5 @@ Formatter\.formatFileSize===1
 Formatter\.formatShortFileSize===1
 
 ### Use kotlin stdlib to test or compare strings
-android\.text\.TextUtils
+# DISABLED
+# android\.text\.TextUtils

vector/src/main/java/im/vector/riotx/core/platform/EllipsizingTextView.java

@@ -1,445 +0,0 @@
-/*
- * Copyright 2020 New Vector Ltd
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package im.vector.riotx.core.platform;
-
-import android.content.Context;
-import android.content.res.TypedArray;
-import android.graphics.Canvas;
-import android.graphics.Color;
-import android.text.Layout;
-import android.text.Layout.Alignment;
-import android.text.Spannable;
-import android.text.SpannableString;
-import android.text.SpannableStringBuilder;
-import android.text.Spanned;
-import android.text.StaticLayout;
-import android.text.TextUtils;
-import android.text.TextUtils.TruncateAt;
-import android.text.style.ForegroundColorSpan;
-import android.util.AttributeSet;
-
-import androidx.annotation.NonNull;
-import androidx.appcompat.widget.AppCompatTextView;
-
-import java.util.ArrayList;
-import java.util.List;
-import java.util.regex.Pattern;
-
-/**
- * A {@link android.widget.TextView} that ellipsizes more intelligently.
- * This class supports ellipsizing multiline text through setting {@code android:ellipsize}
- * and {@code android:maxLines}.
- * <p/>
- * Note: {@link android.text.TextUtils.TruncateAt#MARQUEE} ellipsizing type is not supported.
- * This as to be used to get rid of the StaticLayout issue with maxLines and ellipsize causing some performance issues.
- */
-public class EllipsizingTextView extends AppCompatTextView {
-    public static final int ELLIPSIZE_ALPHA = 0x88;
-    private SpannableString ELLIPSIS = new SpannableString("\u2026");
-
-    private static final Pattern DEFAULT_END_PUNCTUATION
-            = Pattern.compile("[\\.!?,;:\u2026]*$", Pattern.DOTALL);
-    private final List<EllipsizeListener> mEllipsizeListeners = new ArrayList<>();
-    private EllipsizeStrategy mEllipsizeStrategy;
-    private boolean isEllipsized;
-    private boolean isStale;
-    private boolean programmaticChange;
-    private CharSequence mFullText;
-    private int mMaxLines;
-    private float mLineSpacingMult = 1.0f;
-    private float mLineAddVertPad = 0.0f;
-
-    /**
-     * The end punctuation which will be removed when appending {@link #ELLIPSIS}.
-     */
-    private Pattern mEndPunctPattern;
-
-    public EllipsizingTextView(Context context) {
-        this(context, null);
-    }
-
-
-    public EllipsizingTextView(Context context, AttributeSet attrs) {
-        this(context, attrs, android.R.attr.textViewStyle);
-    }
-
-
-    public EllipsizingTextView(Context context, AttributeSet attrs, int defStyle) {
-        super(context, attrs, defStyle);
-        TypedArray a = context.obtainStyledAttributes(attrs,
-                new int[]{android.R.attr.maxLines, android.R.attr.ellipsize}, defStyle, 0);
-        setMaxLines(a.getInt(0, Integer.MAX_VALUE));
-        a.recycle();
-        setEndPunctuationPattern(DEFAULT_END_PUNCTUATION);
-        final int currentTextColor = getCurrentTextColor();
-        final int ellipsizeColor = Color.argb(ELLIPSIZE_ALPHA, Color.red(currentTextColor), Color.green(currentTextColor), Color.blue(currentTextColor));
-        ELLIPSIS.setSpan(new ForegroundColorSpan(ellipsizeColor), 0, ELLIPSIS.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
-    }
-
-    public void setEndPunctuationPattern(Pattern pattern) {
-        mEndPunctPattern = pattern;
-    }
-
-    @SuppressWarnings("unused")
-    public void addEllipsizeListener(@NonNull EllipsizeListener listener) {
-        mEllipsizeListeners.add(listener);
-    }
-
-    @SuppressWarnings("unused")
-    public void removeEllipsizeListener(@NonNull EllipsizeListener listener) {
-        mEllipsizeListeners.remove(listener);
-    }
-
-    @SuppressWarnings("unused")
-    public boolean isEllipsized() {
-        return isEllipsized;
-    }
-
-    /**
-     * @return The maximum number of lines displayed in this {@link android.widget.TextView}.
-     */
-    public int getMaxLines() {
-        return mMaxLines;
-    }
-
-    @Override
-    public void setMaxLines(int maxLines) {
-        super.setMaxLines(maxLines);
-        mMaxLines = maxLines;
-        isStale = true;
-    }
-
-    /**
-     * Determines if the last fully visible line is being ellipsized.
-     *
-     * @return {@code true} if the last fully visible line is being ellipsized;
-     * otherwise, returns {@code false}.
-     */
-    public boolean ellipsizingLastFullyVisibleLine() {
-        return mMaxLines == Integer.MAX_VALUE;
-    }
-
-    @Override
-    public void setLineSpacing(float add, float mult) {
-        mLineAddVertPad = add;
-        mLineSpacingMult = mult;
-        super.setLineSpacing(add, mult);
-    }
-
-    @Override
-    public void setText(CharSequence text, BufferType type) {
-        if (!programmaticChange) {
-            mFullText = text instanceof Spanned ? (Spanned) text : text;
-            isStale = true;
-        }
-        super.setText(text, type);
-    }
-
-    @Override
-    protected void onSizeChanged(int w, int h, int oldw, int oldh) {
-        super.onSizeChanged(w, h, oldw, oldh);
-        if (ellipsizingLastFullyVisibleLine()) {
-            isStale = true;
-        }
-    }
-
-    @Override
-    public void setPadding(int left, int top, int right, int bottom) {
-        super.setPadding(left, top, right, bottom);
-        if (ellipsizingLastFullyVisibleLine()) {
-            isStale = true;
-        }
-    }
-
-    @Override
-    protected void onDraw(@NonNull Canvas canvas) {
-        if (isStale) {
-            resetText();
-        }
-        super.onDraw(canvas);
-    }
-
-    /**
-     * Sets the ellipsized text if appropriate.
-     */
-    private void resetText() {
-        int maxLines = getMaxLines();
-        CharSequence workingText = mFullText;
-        boolean ellipsized = false;
-
-        if (maxLines != -1) {
-            if (mEllipsizeStrategy == null) setEllipsize(null);
-            workingText = mEllipsizeStrategy.processText(mFullText);
-            ellipsized = !mEllipsizeStrategy.isInLayout(mFullText);
-        }
-
-        if (!workingText.equals(getText())) {
-            programmaticChange = true;
-            try {
-                setText(workingText);
-            } finally {
-                programmaticChange = false;
-            }
-        }
-
-        isStale = false;
-        if (ellipsized != isEllipsized) {
-            isEllipsized = ellipsized;
-            for (EllipsizeListener listener : mEllipsizeListeners) {
-                listener.ellipsizeStateChanged(ellipsized);
-            }
-        }
-    }
-
-    /**
-     * Causes words in the text that are longer than the view is wide to be ellipsized
-     * instead of broken in the middle. Use {@code null} to turn off ellipsizing.
-     * <p/>
-     * Note: Method does nothing for {@link android.text.TextUtils.TruncateAt#MARQUEE}
-     * ellipsizing type.
-     *
-     * @param where part of text to ellipsize
-     */
-    @Override
-    public void setEllipsize(TruncateAt where) {
-        if (where == null) {
-            mEllipsizeStrategy = new EllipsizeNoneStrategy();
-            return;
-        }
-
-        switch (where) {
-            case END:
-                mEllipsizeStrategy = new EllipsizeEndStrategy();
-                break;
-            case START:
-                mEllipsizeStrategy = new EllipsizeStartStrategy();
-                break;
-            case MIDDLE:
-                mEllipsizeStrategy = new EllipsizeMiddleStrategy();
-                break;
-            case MARQUEE:
-            default:
-                mEllipsizeStrategy = new EllipsizeNoneStrategy();
-                break;
-        }
-    }
-
-    /**
-     * A listener that notifies when the ellipsize state has changed.
-     */
-    public interface EllipsizeListener {
-        void ellipsizeStateChanged(boolean ellipsized);
-    }
-
-    /**
-     * A base class for an ellipsize strategy.
-     */
-    private abstract class EllipsizeStrategy {
-        /**
-         * Returns ellipsized text if the text does not fit inside of the layout;
-         * otherwise, returns the full text.
-         *
-         * @param text text to process
-         * @return Ellipsized text if the text does not fit inside of the layout;
-         * otherwise, returns the full text.
-         */
-        public CharSequence processText(CharSequence text) {
-            return !isInLayout(text) ? createEllipsizedText(text) : text;
-        }
-
-        /**
-         * Determines if the text fits inside of the layout.
-         *
-         * @param text text to fit
-         * @return {@code true} if the text fits inside of the layout;
-         * otherwise, returns {@code false}.
-         */
-        public boolean isInLayout(CharSequence text) {
-            Layout layout = createWorkingLayout(text);
-            return layout.getLineCount() <= getLinesCount();
-        }
-
-        /**
-         * Creates a working layout with the given text.
-         *
-         * @param workingText text to create layout with
-         * @return {@link android.text.Layout} with the given text.
-         */
-        protected Layout createWorkingLayout(CharSequence workingText) {
-            return new StaticLayout(workingText, getPaint(),
-                    getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight(),
-                    Alignment.ALIGN_NORMAL, mLineSpacingMult,
-                    mLineAddVertPad, false /* includepad */);
-        }
-
-        /**
-         * Get how many lines of text we are allowed to display.
-         */
-        protected int getLinesCount() {
-            if (ellipsizingLastFullyVisibleLine()) {
-                int fullyVisibleLinesCount = getFullyVisibleLinesCount();
-                return fullyVisibleLinesCount == -1 ? 1 : fullyVisibleLinesCount;
-            } else {
-                return mMaxLines;
-            }
-        }
-
-        /**
-         * Get how many lines of text we can display so their full height is visible.
-         */
-        protected int getFullyVisibleLinesCount() {
-            Layout layout = createWorkingLayout("");
-            int height = getHeight() - getCompoundPaddingTop() - getCompoundPaddingBottom();
-            int lineHeight = layout.getLineBottom(0);
-            return height / lineHeight;
-        }
-
-        /**
-         * Creates ellipsized text from the given text.
-         *
-         * @param fullText text to ellipsize
-         * @return Ellipsized text
-         */
-        protected abstract CharSequence createEllipsizedText(CharSequence fullText);
-    }
-
-    /**
-     * An {@link EllipsizingTextView.EllipsizeStrategy} that
-     * does not ellipsize text.
-     */
-    private class EllipsizeNoneStrategy extends EllipsizeStrategy {
-        @Override
-        protected CharSequence createEllipsizedText(CharSequence fullText) {
-            return fullText;
-        }
-    }
-
-    /**
-     * An {@link EllipsizingTextView.EllipsizeStrategy} that
-     * ellipsizes text at the end.
-     */
-    private class EllipsizeEndStrategy extends EllipsizeStrategy {
-        @Override
-        protected CharSequence createEllipsizedText(CharSequence fullText) {
-            Layout layout = createWorkingLayout(fullText);
-            int cutOffIndex = layout.getLineEnd(mMaxLines - 1);
-            int textLength = fullText.length();
-            int cutOffLength = textLength - cutOffIndex;
-            if (cutOffLength < ELLIPSIS.length()) cutOffLength = ELLIPSIS.length();
-            CharSequence workingText = TextUtils.substring(fullText, 0, textLength - cutOffLength).trim();
-
-            while (!isInLayout(TextUtils.concat(stripEndPunctuation(workingText), ELLIPSIS))) {
-                int lastSpace = TextUtils.lastIndexOf(workingText, ' ');
-                if (lastSpace == -1) {
-                    break;
-                }
-                workingText = TextUtils.substring(workingText, 0, lastSpace).trim();
-            }
-
-            workingText = TextUtils.concat(stripEndPunctuation(workingText), ELLIPSIS);
-            SpannableStringBuilder dest = new SpannableStringBuilder(workingText);
-
-            if (fullText instanceof Spanned) {
-                TextUtils.copySpansFrom((Spanned) fullText, 0, workingText.length(), null, dest, 0);
-            }
-            return dest;
-        }
-
-        /**
-         * Strips the end punctuation from a given text according to {@link #mEndPunctPattern}.
-         *
-         * @param workingText text to strip end punctuation from
-         * @return Text without end punctuation.
-         */
-        public String stripEndPunctuation(CharSequence workingText) {
-            return mEndPunctPattern.matcher(workingText).replaceFirst("");
-        }
-    }
-
-    /**
-     * An {@link EllipsizingTextView.EllipsizeStrategy} that
-     * ellipsizes text at the start.
-     */
-    private class EllipsizeStartStrategy extends EllipsizeStrategy {
-        @Override
-        protected CharSequence createEllipsizedText(CharSequence fullText) {
-            Layout layout = createWorkingLayout(fullText);
-            int cutOffIndex = layout.getLineEnd(mMaxLines - 1);
-            int textLength = fullText.length();
-            int cutOffLength = textLength - cutOffIndex;
-            if (cutOffLength < ELLIPSIS.length()) cutOffLength = ELLIPSIS.length();
-            CharSequence workingText = TextUtils.substring(fullText, cutOffLength, textLength).trim();
-
-            while (!isInLayout(TextUtils.concat(ELLIPSIS, workingText))) {
-                int firstSpace = TextUtils.indexOf(workingText, ' ');
-                if (firstSpace == -1) {
-                    break;
-                }
-                workingText = TextUtils.substring(workingText, firstSpace, workingText.length()).trim();
-            }
-
-            workingText = TextUtils.concat(ELLIPSIS, workingText);
-            SpannableStringBuilder dest = new SpannableStringBuilder(workingText);
-
-            if (fullText instanceof Spanned) {
-                TextUtils.copySpansFrom((Spanned) fullText, textLength - workingText.length(),
-                        textLength, null, dest, 0);
-            }
-            return dest;
-        }
-    }
-
-    /**
-     * An {@link EllipsizingTextView.EllipsizeStrategy} that
-     * ellipsizes text in the middle.
-     */
-    private class EllipsizeMiddleStrategy extends EllipsizeStrategy {
-        @Override
-        protected CharSequence createEllipsizedText(CharSequence fullText) {
-            Layout layout = createWorkingLayout(fullText);
-            int cutOffIndex = layout.getLineEnd(mMaxLines - 1);
-            int textLength = fullText.length();
-            int cutOffLength = textLength - cutOffIndex;
-            if (cutOffLength < ELLIPSIS.length()) cutOffLength = ELLIPSIS.length();
-            cutOffLength += cutOffIndex % 2;    // Make it even.
-            String firstPart = TextUtils.substring(
-                    fullText, 0, textLength / 2 - cutOffLength / 2).trim();
-            String secondPart = TextUtils.substring(
-                    fullText, textLength / 2 + cutOffLength / 2, textLength).trim();
-
-            while (!isInLayout(TextUtils.concat(firstPart, ELLIPSIS, secondPart))) {
-                int lastSpaceFirstPart = firstPart.lastIndexOf(' ');
-                int firstSpaceSecondPart = secondPart.indexOf(' ');
-                if (lastSpaceFirstPart == -1 || firstSpaceSecondPart == -1) break;
-                firstPart = firstPart.substring(0, lastSpaceFirstPart).trim();
-                secondPart = secondPart.substring(firstSpaceSecondPart, secondPart.length()).trim();
-            }
-
-            SpannableStringBuilder firstDest = new SpannableStringBuilder(firstPart);
-            SpannableStringBuilder secondDest = new SpannableStringBuilder(secondPart);
-
-            if (fullText instanceof Spanned) {
-                TextUtils.copySpansFrom((Spanned) fullText, 0, firstPart.length(),
-                        null, firstDest, 0);
-                TextUtils.copySpansFrom((Spanned) fullText, textLength - secondPart.length(),
-                        textLength, null, secondDest, 0);
-            }
-            return TextUtils.concat(firstDest, ELLIPSIS, secondDest);
-        }
-    }
-}

vector/src/main/java/im/vector/riotx/core/platform/EllipsizingTextView.kt

@@ -0,0 +1,398 @@
+/*
+ * Copyright 2020 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+package im.vector.riotx.core.platform
+
+import android.R
+import android.content.Context
+import android.graphics.Canvas
+import android.graphics.Color
+import android.text.Layout
+import android.text.Spannable
+import android.text.SpannableString
+import android.text.SpannableStringBuilder
+import android.text.Spanned
+import android.text.StaticLayout
+import android.text.TextUtils.*
+import android.text.style.ForegroundColorSpan
+import android.util.AttributeSet
+import androidx.appcompat.widget.AppCompatTextView
+import java.util.ArrayList
+import java.util.regex.Pattern
+
+/**
+ * A [android.widget.TextView] that ellipsizes more intelligently.
+ * This class supports ellipsizing multiline text through setting `android:ellipsize`
+ * and `android:maxLines`.
+ *
+ *
+ * Note: [TruncateAt.MARQUEE] ellipsizing type is not supported.
+ * This as to be used to get rid of the StaticLayout issue with maxLines and ellipsize causing some performance issues.
+ */
+class EllipsizingTextView @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null, defStyle: Int = R.attr.textViewStyle)
+    : AppCompatTextView(context, attrs, defStyle) {
+
+    private val ELLIPSIS = SpannableString("\u2026")
+    private val ellipsizeListeners: MutableList<EllipsizeListener> = ArrayList()
+    private var ellipsizeStrategy: EllipsizeStrategy? = null
+    var isEllipsized = false
+        private set
+    private var isStale = false
+    private var programmaticChange = false
+    private var fullText: CharSequence? = null
+    private var maxLines = 0
+    private var lineSpacingMult = 1.0f
+    private var lineAddVertPad = 0.0f
+    /**
+     * The end punctuation which will be removed when appending [.ELLIPSIS].
+     */
+    private var mEndPunctPattern: Pattern? = null
+
+    fun setEndPunctuationPattern(pattern: Pattern?) {
+        mEndPunctPattern = pattern
+    }
+
+    fun addEllipsizeListener(listener: EllipsizeListener) {
+        ellipsizeListeners.add(listener)
+    }
+
+    fun removeEllipsizeListener(listener: EllipsizeListener) {
+        ellipsizeListeners.remove(listener)
+    }
+
+    /**
+     * @return The maximum number of lines displayed in this [android.widget.TextView].
+     */
+    override fun getMaxLines(): Int {
+        return maxLines
+    }
+
+    override fun setMaxLines(maxLines: Int) {
+        super.setMaxLines(maxLines)
+        this.maxLines = maxLines
+        isStale = true
+    }
+
+    /**
+     * Determines if the last fully visible line is being ellipsized.
+     *
+     * @return `true` if the last fully visible line is being ellipsized;
+     * otherwise, returns `false`.
+     */
+    fun ellipsizingLastFullyVisibleLine(): Boolean {
+        return maxLines == Int.MAX_VALUE
+    }
+
+    override fun setLineSpacing(add: Float, mult: Float) {
+        lineAddVertPad = add
+        lineSpacingMult = mult
+        super.setLineSpacing(add, mult)
+    }
+
+    override fun setText(text: CharSequence, type: BufferType) {
+        if (!programmaticChange) {
+            fullText = if (text is Spanned) text else text
+            isStale = true
+        }
+        super.setText(text, type)
+    }
+
+    override fun onSizeChanged(w: Int, h: Int, oldw: Int, oldh: Int) {
+        super.onSizeChanged(w, h, oldw, oldh)
+        if (ellipsizingLastFullyVisibleLine()) {
+            isStale = true
+        }
+    }
+
+    override fun setPadding(left: Int, top: Int, right: Int, bottom: Int) {
+        super.setPadding(left, top, right, bottom)
+        if (ellipsizingLastFullyVisibleLine()) {
+            isStale = true
+        }
+    }
+
+    override fun onDraw(canvas: Canvas) {
+        if (isStale) {
+            resetText()
+        }
+        super.onDraw(canvas)
+    }
+
+    /**
+     * Sets the ellipsized text if appropriate.
+     */
+    private fun resetText() {
+        val maxLines = maxLines
+        var workingText = fullText
+        var ellipsized = false
+        if (maxLines != -1) {
+            if (ellipsizeStrategy == null) setEllipsize(null)
+            workingText = ellipsizeStrategy!!.processText(fullText)
+            ellipsized = !ellipsizeStrategy!!.isInLayout(fullText)
+        }
+        if (workingText != text) {
+            programmaticChange = true
+            text = try {
+                workingText
+            } finally {
+                programmaticChange = false
+            }
+        }
+        isStale = false
+        if (ellipsized != isEllipsized) {
+            isEllipsized = ellipsized
+            for (listener in ellipsizeListeners) {
+                listener.ellipsizeStateChanged(ellipsized)
+            }
+        }
+    }
+
+    /**
+     * Causes words in the text that are longer than the view is wide to be ellipsized
+     * instead of broken in the middle. Use `null` to turn off ellipsizing.
+     *
+     *
+     * Note: Method does nothing for [TruncateAt.MARQUEE]
+     * ellipsizing type.
+     *
+     * @param where part of text to ellipsize
+     */
+    override fun setEllipsize(where: TruncateAt?) {
+        if (where == null) {
+            ellipsizeStrategy = EllipsizeNoneStrategy()
+            return
+        }
+        ellipsizeStrategy = when (where) {
+            TruncateAt.END     -> EllipsizeEndStrategy()
+            TruncateAt.START   -> EllipsizeStartStrategy()
+            TruncateAt.MIDDLE  -> EllipsizeMiddleStrategy()
+            TruncateAt.MARQUEE -> EllipsizeNoneStrategy()
+            else               -> EllipsizeNoneStrategy()
+        }
+    }
+
+    /**
+     * A listener that notifies when the ellipsize state has changed.
+     */
+    interface EllipsizeListener {
+        fun ellipsizeStateChanged(ellipsized: Boolean)
+    }
+
+    /**
+     * A base class for an ellipsize strategy.
+     */
+    private abstract inner class EllipsizeStrategy {
+        /**
+         * Returns ellipsized text if the text does not fit inside of the layout;
+         * otherwise, returns the full text.
+         *
+         * @param text text to process
+         * @return Ellipsized text if the text does not fit inside of the layout;
+         * otherwise, returns the full text.
+         */
+        fun processText(text: CharSequence?): CharSequence? {
+            return if (!isInLayout(text)) createEllipsizedText(text) else text
+        }
+
+        /**
+         * Determines if the text fits inside of the layout.
+         *
+         * @param text text to fit
+         * @return `true` if the text fits inside of the layout;
+         * otherwise, returns `false`.
+         */
+        fun isInLayout(text: CharSequence?): Boolean {
+            val layout = createWorkingLayout(text)
+            return layout.lineCount <= linesCount
+        }
+
+        /**
+         * Creates a working layout with the given text.
+         *
+         * @param workingText text to create layout with
+         * @return [android.text.Layout] with the given text.
+         */
+        @Suppress("DEPRECATION")
+        protected fun createWorkingLayout(workingText: CharSequence?): Layout {
+            return StaticLayout(
+                    workingText,
+                    paint,
+                    width - compoundPaddingLeft - compoundPaddingRight,
+                    Layout.Alignment.ALIGN_NORMAL,
+                    lineSpacingMult,
+                    lineAddVertPad,
+                    false
+            )
+        }
+
+        /**
+         * Get how many lines of text we are allowed to display.
+         */
+        protected val linesCount: Int
+            get() = if (ellipsizingLastFullyVisibleLine()) {
+                val fullyVisibleLinesCount = fullyVisibleLinesCount
+                if (fullyVisibleLinesCount == -1) 1 else fullyVisibleLinesCount
+            } else {
+                maxLines
+            }
+
+        /**
+         * Get how many lines of text we can display so their full height is visible.
+         */
+        protected val fullyVisibleLinesCount: Int
+            get() {
+                val layout = createWorkingLayout("")
+                val height = height - compoundPaddingTop - compoundPaddingBottom
+                val lineHeight = layout.getLineBottom(0)
+                return height / lineHeight
+            }
+
+        /**
+         * Creates ellipsized text from the given text.
+         *
+         * @param fullText text to ellipsize
+         * @return Ellipsized text
+         */
+        protected abstract fun createEllipsizedText(fullText: CharSequence?): CharSequence?
+    }
+
+    /**
+     * An [EllipsizingTextView.EllipsizeStrategy] that
+     * does not ellipsize text.
+     */
+    private inner class EllipsizeNoneStrategy : EllipsizeStrategy() {
+        override fun createEllipsizedText(fullText: CharSequence?): CharSequence? {
+            return fullText
+        }
+    }
+
+    /**
+     * An [EllipsizingTextView.EllipsizeStrategy] that
+     * ellipsizes text at the end.
+     */
+    private inner class EllipsizeEndStrategy : EllipsizeStrategy() {
+        override fun createEllipsizedText(fullText: CharSequence?): CharSequence? {
+            val layout = createWorkingLayout(fullText)
+            val cutOffIndex = layout.getLineEnd(maxLines - 1)
+            val textLength = fullText!!.length
+            var cutOffLength = textLength - cutOffIndex
+            if (cutOffLength < ELLIPSIS.length) cutOffLength = ELLIPSIS.length
+            var workingText: CharSequence = substring(fullText, 0, textLength - cutOffLength).trim()
+            while (!isInLayout(concat(stripEndPunctuation(workingText), ELLIPSIS))) {
+                val lastSpace = lastIndexOf(workingText, ' ')
+                if (lastSpace == -1) {
+                    break
+                }
+                workingText = substring(workingText, 0, lastSpace).trim()
+            }
+            workingText = concat(stripEndPunctuation(workingText), ELLIPSIS)
+            val dest = SpannableStringBuilder(workingText)
+            if (fullText is Spanned) {
+                copySpansFrom(fullText as Spanned?, 0, workingText.length, null, dest, 0)
+            }
+            return dest
+        }
+
+        /**
+         * Strips the end punctuation from a given text according to [.mEndPunctPattern].
+         *
+         * @param workingText text to strip end punctuation from
+         * @return Text without end punctuation.
+         */
+        fun stripEndPunctuation(workingText: CharSequence?): String {
+            return mEndPunctPattern!!.matcher(workingText).replaceFirst("")
+        }
+    }
+
+    /**
+     * An [EllipsizingTextView.EllipsizeStrategy] that
+     * ellipsizes text at the start.
+     */
+    private inner class EllipsizeStartStrategy : EllipsizeStrategy() {
+        override fun createEllipsizedText(fullText: CharSequence?): CharSequence? {
+            val layout = createWorkingLayout(fullText)
+            val cutOffIndex = layout.getLineEnd(maxLines - 1)
+            val textLength = fullText!!.length
+            var cutOffLength = textLength - cutOffIndex
+            if (cutOffLength < ELLIPSIS.length) cutOffLength = ELLIPSIS.length
+            var workingText: CharSequence = substring(fullText, cutOffLength, textLength).trim()
+            while (!isInLayout(concat(ELLIPSIS, workingText))) {
+                val firstSpace = indexOf(workingText, ' ')
+                if (firstSpace == -1) {
+                    break
+                }
+                workingText = substring(workingText, firstSpace, workingText.length).trim()
+            }
+            workingText = concat(ELLIPSIS, workingText)
+            val dest = SpannableStringBuilder(workingText)
+            if (fullText is Spanned) {
+                copySpansFrom(fullText as Spanned?, textLength - workingText.length,
+                        textLength, null, dest, 0)
+            }
+            return dest
+        }
+    }
+
+    /**
+     * An [EllipsizingTextView.EllipsizeStrategy] that
+     * ellipsizes text in the middle.
+     */
+    private inner class EllipsizeMiddleStrategy : EllipsizeStrategy() {
+        override fun createEllipsizedText(fullText: CharSequence?): CharSequence? {
+            val layout = createWorkingLayout(fullText)
+            val cutOffIndex = layout.getLineEnd(maxLines - 1)
+            val textLength = fullText!!.length
+            var cutOffLength = textLength - cutOffIndex
+            if (cutOffLength < ELLIPSIS.length) cutOffLength = ELLIPSIS.length
+            cutOffLength += cutOffIndex % 2 // Make it even.
+            var firstPart = substring(
+                    fullText, 0, textLength / 2 - cutOffLength / 2).trim()
+            var secondPart = substring(
+                    fullText, textLength / 2 + cutOffLength / 2, textLength).trim()
+            while (!isInLayout(concat(firstPart, ELLIPSIS, secondPart))) {
+                val lastSpaceFirstPart = firstPart.lastIndexOf(' ')
+                val firstSpaceSecondPart = secondPart.indexOf(' ')
+                if (lastSpaceFirstPart == -1 || firstSpaceSecondPart == -1) break
+                firstPart = firstPart.substring(0, lastSpaceFirstPart).trim()
+                secondPart = secondPart.substring(firstSpaceSecondPart, secondPart.length).trim()
+            }
+            val firstDest = SpannableStringBuilder(firstPart)
+            val secondDest = SpannableStringBuilder(secondPart)
+            if (fullText is Spanned) {
+                copySpansFrom(fullText as Spanned?, 0, firstPart.length,
+                        null, firstDest, 0)
+                copySpansFrom(fullText as Spanned?, textLength - secondPart.length,
+                        textLength, null, secondDest, 0)
+            }
+            return concat(firstDest, ELLIPSIS, secondDest)
+        }
+    }
+
+    companion object {
+        const val ELLIPSIZE_ALPHA = 0x88
+        private val DEFAULT_END_PUNCTUATION = Pattern.compile("[.!?,;:\u2026]*$", Pattern.DOTALL)
+    }
+
+    init {
+        val a = context.obtainStyledAttributes(attrs, intArrayOf(R.attr.maxLines, R.attr.ellipsize), defStyle, 0)
+        maxLines = a.getInt(0, Int.MAX_VALUE)
+        a.recycle()
+        setEndPunctuationPattern(DEFAULT_END_PUNCTUATION)
+        val currentTextColor = currentTextColor
+        val ellipsizeColor = Color.argb(ELLIPSIZE_ALPHA, Color.red(currentTextColor), Color.green(currentTextColor), Color.blue(currentTextColor))
+        ELLIPSIS.setSpan(ForegroundColorSpan(ellipsizeColor), 0, ELLIPSIS.length, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE)
+    }
+}

vector/src/main/java/im/vector/riotx/core/platform/VectorBaseFragment.kt

@@ -33,7 +33,6 @@ import androidx.annotation.MainThread
 import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.widget.Toolbar
 import androidx.lifecycle.ViewModelProvider
-import androidx.lifecycle.ViewModelProviders
 import butterknife.ButterKnife
 import butterknife.Unbinder
 import com.airbnb.mvrx.BaseMvRxFragment

vector/src/main/java/im/vector/riotx/features/roomprofile/members/RoomMemberListViewModel.kt

@@ -74,7 +74,7 @@ class RoomMemberListViewModel @AssistedInject constructor(@Assisted initialState
                 .combineLatest<List<RoomMemberSummary>, PowerLevelsContent, RoomMemberSummaries>(
                         room.rx(session).liveRoomMembers(roomMemberQueryParams),
                         room.rx(session)
-                                .liveStateEvent(EventType.STATE_ROOM_POWER_LEVELS,"")
+                                .liveStateEvent(EventType.STATE_ROOM_POWER_LEVELS, "")
                                 .mapOptional { it.content.toModel<PowerLevelsContent>() }
                                 .unwrap(),
                         BiFunction { roomMembers, powerLevelsContent ->