Swipe spaces bottom bar

Change-Id: Ib15b3b28f5f429e73cf80130dc575ae2111a1cef

vector/src/main/java/im/vector/app/features/home/HomeDetailFragment.kt

@@ -25,6 +25,7 @@ import android.view.ViewGroup
 import android.view.ViewTreeObserver
 import androidx.core.view.isVisible
 import androidx.fragment.app.Fragment
+import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.viewpager2.adapter.FragmentStateAdapter
 import androidx.viewpager2.widget.ViewPager2
 import com.airbnb.mvrx.UniqueOnly
@@ -60,6 +61,8 @@ import im.vector.app.features.home.room.list.RoomListFragment
 import im.vector.app.features.home.room.list.RoomListParams
 import im.vector.app.features.home.room.list.RoomListSectionBuilder.Companion.SPACE_ID_FOLLOW_APP
 import im.vector.app.features.home.room.list.UnreadCounterBadgeView
+import im.vector.app.features.home.room.list.home.spacebar.SpaceBarController
+import im.vector.app.features.home.room.list.home.spacebar.SpaceBarData
 import im.vector.app.features.popup.PopupAlertManager
 import im.vector.app.features.popup.VerificationVectorAlert
 import im.vector.app.features.settings.VectorLocaleProvider
@@ -69,6 +72,7 @@ import im.vector.app.features.themes.ThemeUtils
 import im.vector.app.features.workers.signout.BannerState
 import im.vector.app.features.workers.signout.ServerBackupStatusAction
 import im.vector.app.features.workers.signout.ServerBackupStatusViewModel
+import org.matrix.android.sdk.api.extensions.tryOrNull
 import org.matrix.android.sdk.api.session.crypto.model.DeviceInfo
 import org.matrix.android.sdk.api.session.room.model.RoomSummary
 import timber.log.Timber
@@ -90,6 +94,7 @@ class HomeDetailFragment :
     @Inject lateinit var vectorPreferences: VectorPreferences
     @Inject lateinit var spaceStateHandler: SpaceStateHandler
     @Inject lateinit var vectorLocale: VectorLocaleProvider
+    @Inject lateinit var spaceBarController: SpaceBarController
 
     private val DEBUG_VIEW_PAGER = DbgUtil.isDbgEnabled(DbgUtil.DBG_VIEW_PAGER)
     private val viewPagerDimber = Dimber("Home pager", DbgUtil.DBG_VIEW_PAGER)
@@ -145,6 +150,16 @@ class HomeDetailFragment :
 
     private val currentCallsViewPresenter = CurrentCallsViewPresenter()
 
+    private val spaceBarListener = object: SpaceBarController.SpaceBarListener {
+        override fun onSpaceBarSelectSpace(space: RoomSummary?) {
+            spaceStateHandler.setCurrentSpace(space?.roomId, from = SelectSpaceFrom.SELECT)
+        }
+        override fun onSpaceBarLongPressSpace(space: RoomSummary?): Boolean {
+            sharedActionViewModel.post(HomeActivitySharedAction.OpenDrawer)
+            return true
+        }
+    }
+
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
         sharedActionViewModel = activityViewModelProvider.get(HomeSharedActionViewModel::class.java)
@@ -156,6 +171,12 @@ class HomeDetailFragment :
 
         checkNotificationTabStatus()
 
+        val spaceBarAdapter = spaceBarController.also { controller ->
+            controller.spaceRoomListener = spaceBarListener
+        }.adapter
+        views.spaceBarRecyclerView.layoutManager = LinearLayoutManager(context)
+        views.spaceBarRecyclerView.adapter = spaceBarAdapter
+
         // Reduce sensitivity of viewpager to avoid scrolling horizontally by accident too easily
         views.roomListContainerPager.reduceDragSensitivity(4)
 
@@ -226,7 +247,9 @@ class HomeDetailFragment :
                             highlighted = state.otherSpacesUnread.isHighlight,
                             unread = state.otherSpacesUnread.unreadCount,
                             markedUnread = false
-                    )
+                    ).also {
+                        spaceBarController.submitHomeUnreadCounts(it)
+                    }
             )
         }
 
@@ -280,6 +303,9 @@ class HomeDetailFragment :
 
     override fun onDestroyView() {
         currentCallsViewPresenter.unBind()
+
+        spaceBarController.spaceRoomListener = null
+
         super.onDestroyView()
     }
 
@@ -433,6 +459,9 @@ class HomeDetailFragment :
     }
 
     private fun onSpaceChange(spaceSummary: RoomSummary?) {
+        if (pagerPagingEnabled) {
+            spaceBarController.selectSpace(spaceSummary)
+        }
         if (spaceSummary == null) {
             views.groupToolbarSpaceTitleView.isVisible = false
         } else {
@@ -441,6 +470,11 @@ class HomeDetailFragment :
         }
     }
 
+    private fun setCurrentPagerItem(index: Int, smoothScroll: Boolean) {
+        views.roomListContainerPager.setCurrentItem(index, smoothScroll)
+        spaceBarController.scrollToSpacePosition(index)
+    }
+
     private fun setupKeysBackupBanner() {
         serverBackupStatusViewModel.handle(ServerBackupStatusAction.OnBannerDisplayed)
         serverBackupStatusViewModel
@@ -556,6 +590,12 @@ class HomeDetailFragment :
             getPageIndexForSpaceId(selectedSpaceId, unsafeSpaces)
         }
         val pagingEnabled = pagingAllowed && unsafeSpaces.isNotEmpty() && selectedIndex != null
+        if (pagingEnabled) {
+            views.spaceBarRecyclerView.isVisible = true
+            spaceBarController.submitData(SpaceBarData(spaces?.let { listOf<RoomSummary?>(null) + it }, selectedSpace))
+        } else {
+            views.spaceBarRecyclerView.isVisible = false
+        }
         val safeSpaces = if (pagingEnabled) unsafeSpaces else listOf()
         // Check if we need to recreate the adapter for a new tab
         if (oldAdapter != null) {
@@ -582,7 +622,7 @@ class HomeDetailFragment :
                                 // Do not smooth scroll large distances to avoid loading unnecessary many room lists
                                 val diff = selectedIndex - views.roomListContainerPager.currentItem
                                 val smoothScroll = abs(diff) <= 1
-                                views.roomListContainerPager.setCurrentItem(selectedIndex, smoothScroll)
+                                setCurrentPagerItem(selectedIndex, smoothScroll)
                             }
                         }
                         return
@@ -656,7 +696,7 @@ class HomeDetailFragment :
                         }
                         try {
                             viewPagerDimber.i{"Home pager: set initial page $selectedIndex"}
-                            views.roomListContainerPager.setCurrentItem(selectedIndex ?: 0, false)
+                            setCurrentPagerItem(selectedIndex ?: 0, false)
                             initialPageSelected = true
                         } catch (e: Exception) {
                             Timber.e("Home pager: Could not set initial page after creating adapter: $e")

vector/src/main/java/im/vector/app/features/home/room/list/home/spacebar/SpaceBarController.kt

@@ -0,0 +1,157 @@
+/*
+ * Copyright (c) 2022 New Vector Ltd
+ * Copyright (c) 2022 SpiritCroc
+ *
+ * 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.app.features.home.room.list.home.spacebar
+
+import androidx.recyclerview.widget.LinearLayoutManager
+import com.airbnb.epoxy.Carousel
+import com.airbnb.epoxy.CarouselModelBuilder
+import com.airbnb.epoxy.EpoxyController
+import com.airbnb.epoxy.EpoxyModel
+import com.airbnb.epoxy.carousel
+import im.vector.app.core.resources.StringProvider
+import im.vector.app.features.home.AvatarRenderer
+import im.vector.app.features.home.room.list.UnreadCounterBadgeView
+import org.matrix.android.sdk.api.session.room.model.RoomSummary
+import org.matrix.android.sdk.api.util.toMatrixItem
+import javax.inject.Inject
+import kotlin.math.max
+import kotlin.math.min
+
+class SpaceBarController @Inject constructor(
+        val stringProvider: StringProvider,
+        private val avatarRenderer: AvatarRenderer,
+) : EpoxyController() {
+
+    private var data: SpaceBarData = SpaceBarData()
+    private var topLevelUnreadCounts: UnreadCounterBadgeView.State.Count = UnreadCounterBadgeView.State.Count(0, false, 0, false)
+
+    interface SpaceBarListener {
+        fun onSpaceBarSelectSpace(space: RoomSummary?)
+        fun onSpaceBarLongPressSpace(space: RoomSummary?): Boolean
+    }
+    var spaceRoomListener: SpaceBarListener? = null
+
+    private var carousel: Carousel? = null
+
+    override fun buildModels() {
+        val host = this
+        data.spaces?.let {
+            addSpaces(host, it, data.selectedSpace)
+        }
+    }
+
+    private fun addSpaces(host: SpaceBarController, spaces: List<RoomSummary?>, selectedSpace: RoomSummary?) {
+        carousel {
+            id("spaces_carousel")
+            padding(
+                    Carousel.Padding(
+                            0,
+                            0,
+                            0,
+                            0,
+                            0,
+                    )
+            )
+            onBind { _, view, _ ->
+                host.carousel = view
+                host.scrollToSpace(selectedSpace?.roomId)
+            }
+
+            onUnbind { _, _ ->
+                host.carousel = null
+            }
+
+            withModelsFrom(spaces) { spaceSummary ->
+                val onClick = host.spaceRoomListener?.let { it::onSpaceBarSelectSpace }
+                val onLongClick = host.spaceRoomListener?.let { it::onSpaceBarLongPressSpace }
+
+                if (spaceSummary == null) {
+                    SpaceBarItem_()
+                            .id("de.spiritcroc.riotx.spacebarhome")
+                            .avatarRenderer(host.avatarRenderer)
+                            .matrixItem(null)
+                            .unreadNotificationCount(host.topLevelUnreadCounts.count)
+                            .showHighlighted(host.topLevelUnreadCounts.highlighted)
+                            .unreadCount(host.topLevelUnreadCounts.unread)
+                            .markedUnread(host.topLevelUnreadCounts.markedUnread)
+                            .selected(selectedSpace == null)
+                            .itemLongClickListener { _ -> onLongClick?.invoke(null) ?: false }
+                            .itemClickListener { onClick?.invoke(null) }
+                } else {
+                    SpaceBarItem_()
+                            .id(spaceSummary.roomId)
+                            .avatarRenderer(host.avatarRenderer)
+                            .matrixItem(spaceSummary.toMatrixItem())
+                            .unreadNotificationCount(spaceSummary.notificationCount)
+                            .showHighlighted(spaceSummary.highlightCount > 0)
+                            .unreadCount(spaceSummary.unreadCount ?: 0)
+                            .markedUnread(spaceSummary.markedUnread)
+                            .selected(spaceSummary.roomId == selectedSpace?.roomId)
+                            .itemLongClickListener { _ -> onLongClick?.invoke(spaceSummary) ?: false }
+                            .itemClickListener { onClick?.invoke(spaceSummary) }
+                }
+            }
+        }
+    }
+
+    fun submitData(data: SpaceBarData) {
+        this.data = data
+        requestModelBuild()
+    }
+
+    fun submitHomeUnreadCounts(counts: UnreadCounterBadgeView.State.Count) {
+        this.topLevelUnreadCounts = counts
+        requestModelBuild()
+    }
+
+    fun selectSpace(space: RoomSummary?) {
+        this.data = this.data.copy(selectedSpace = space)
+        requestModelBuild()
+        scrollToSpace(space?.roomId)
+    }
+
+    fun scrollToSpace(spaceId: String?) {
+        val position = this.data.spaces?.indexOfFirst { spaceId == it?.roomId } ?: -1
+        if (position >= 0) {
+            scrollToSpacePosition(position)
+        }
+    }
+
+    fun scrollToSpacePosition(position: Int) {
+        val safeCarousel = carousel ?: return
+        var effectivePosition = position
+        val lm = safeCarousel.layoutManager as? LinearLayoutManager
+        if (lm != null) {
+            // Look-ahead of 1
+            if (lm.findFirstCompletelyVisibleItemPosition() >= position) {
+                effectivePosition--
+            } else if (lm.findLastVisibleItemPosition() <= position) {
+                effectivePosition++
+            }
+            effectivePosition = max(0, min(effectivePosition, lm.itemCount-1))
+        }
+        safeCarousel.smoothScrollToPosition(effectivePosition)
+    }
+}
+
+private inline fun <T> CarouselModelBuilder.withModelsFrom(
+        items: List<T>,
+        modelBuilder: (T) -> EpoxyModel<*>
+) {
+    models(items.map { modelBuilder(it) })
+}

vector/src/main/java/im/vector/app/features/home/room/list/home/spacebar/SpaceBarData.kt

@@ -0,0 +1,25 @@
+/*
+ * Copyright (c) 2022 New Vector Ltd
+ * Copyright (c) 2022 SpiritCroc
+ *
+ * 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.app.features.home.room.list.home.spacebar
+
+import org.matrix.android.sdk.api.session.room.model.RoomSummary
+
+data class SpaceBarData(
+        val spaces: List<RoomSummary?>? = null,
+        val selectedSpace: RoomSummary? = null,
+)

vector/src/main/java/im/vector/app/features/home/room/list/home/spacebar/SpaceBarItem.kt

@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2022 New Vector Ltd
+ * Copyright (c) 2022 SpiritCroc
+ *
+ * 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.app.features.home.room.list.home.spacebar
+
+import android.content.res.ColorStateList
+import android.view.HapticFeedbackConstants
+import android.view.View
+import android.widget.ImageView
+import com.airbnb.epoxy.EpoxyAttribute
+import com.airbnb.epoxy.EpoxyModelClass
+import im.vector.app.R
+import im.vector.app.core.epoxy.ClickListener
+import im.vector.app.core.epoxy.VectorEpoxyHolder
+import im.vector.app.core.epoxy.VectorEpoxyModel
+import im.vector.app.core.epoxy.onClick
+import im.vector.app.core.platform.CheckableConstraintLayout
+import im.vector.app.features.displayname.getBestName
+import im.vector.app.features.home.AvatarRenderer
+import im.vector.app.features.home.room.list.UnreadCounterBadgeView
+import im.vector.app.features.themes.ThemeUtils
+import org.matrix.android.sdk.api.util.MatrixItem
+
+@EpoxyModelClass
+abstract class SpaceBarItem : VectorEpoxyModel<SpaceBarItem.Holder>(R.layout.space_bar_item) {
+
+    @EpoxyAttribute lateinit var avatarRenderer: AvatarRenderer
+    @EpoxyAttribute var matrixItem: MatrixItem? = null
+    @EpoxyAttribute var unreadNotificationCount: Int = 0
+    @EpoxyAttribute var unreadCount: Int = 0
+    @EpoxyAttribute var markedUnread: Boolean = false
+    @EpoxyAttribute var showHighlighted: Boolean = false
+    @EpoxyAttribute var selected: Boolean = false
+
+    @EpoxyAttribute(EpoxyAttribute.Option.DoNotHash)
+    var itemLongClickListener: View.OnLongClickListener? = null
+
+    @EpoxyAttribute(EpoxyAttribute.Option.DoNotHash)
+    var itemClickListener: ClickListener? = null
+
+    override fun bind(holder: Holder) {
+        super.bind(holder)
+
+        holder.rootView.onClick(itemClickListener)
+        holder.rootView.setOnLongClickListener {
+            it.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS)
+            itemLongClickListener?.onLongClick(it) ?: false
+        }
+
+        matrixItem.let {
+            if (it == null) {
+                holder.avatarImageView.setImageResource(R.drawable.ic_space_home)
+                holder.avatarImageView.imageTintList = ColorStateList.valueOf(ThemeUtils.getColor(holder.avatarImageView.context, R.attr.vctr_content_primary))
+                holder.avatarImageView.contentDescription = holder.rootView.context.getString(R.string.group_details_home)
+            } else {
+                holder.avatarImageView.imageTintList = null
+                avatarRenderer.render(it, holder.avatarImageView)
+                holder.avatarImageView.contentDescription = it.getBestName()
+            }
+        }
+        holder.unreadCounterBadgeView.render(UnreadCounterBadgeView.State.Count(unreadNotificationCount, showHighlighted, unreadCount, markedUnread))
+        holder.rootView.isChecked = selected
+    }
+
+    override fun unbind(holder: Holder) {
+        holder.rootView.setOnClickListener(null)
+        holder.rootView.setOnLongClickListener(null)
+        avatarRenderer.clear(holder.avatarImageView)
+        super.unbind(holder)
+    }
+
+    class Holder : VectorEpoxyHolder() {
+        val unreadCounterBadgeView by bind<UnreadCounterBadgeView>(R.id.spaceUnreadCounterBadgeView)
+        val avatarImageView by bind<ImageView>(R.id.spaceImageView)
+        val rootView by bind<CheckableConstraintLayout>(R.id.spaceRoot)
+    }
+}

vector/src/main/res/drawable/bg_bottom_space_item.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <item android:state_checked="true">
+        <layer-list>
+            <item>
+                <shape>
+                    <solid android:color="@android:color/transparent" />
+                </shape>
+            </item>
+            <item android:gravity="center_horizontal|bottom" >
+                <shape>
+                    <size android:width="40dp" android:height="4dp" />
+                    <solid android:color="?colorSecondary" />
+                    <corners android:topLeftRadius="8dp" android:topRightRadius="8dp" />
+                </shape>
+            </item>
+        </layer-list>
+    </item>
+
+    <item>
+        <shape>
+            <solid android:color="@android:color/transparent" />
+        </shape>
+    </item>
+
+</selector>

vector/src/main/res/layout/fragment_home_detail.xml

@@ -150,7 +150,7 @@
         android:id="@+id/roomListContainerStateView"
         android:layout_width="match_parent"
         android:layout_height="0dp"
-        app:layout_constraintBottom_toTopOf="@+id/bottomNavigationView"
+        app:layout_constraintBottom_toTopOf="@+id/spaceBarRecyclerView"
         app:layout_constraintTop_toBottomOf="@+id/homeKeysBackupBanner">
         <androidx.viewpager2.widget.ViewPager2
             android:id="@+id/roomListContainerPager"
@@ -158,6 +158,29 @@
             android:layout_height="match_parent" />
     </im.vector.app.core.platform.StateView>
 
+    <!-- Own view for spacebar bg in case of wrap_content of spaceBarRecyclerView is smaller than screen estate -->
+    <View
+        android:id="@+id/spaceBarBackground"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:background="@drawable/bg_bottom_navigation"
+        android:elevation="4dp"
+        app:layout_constraintBottom_toBottomOf="@id/spaceBarRecyclerView"
+        app:layout_constraintTop_toTopOf="@id/spaceBarRecyclerView"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent" />
+    <!-- wrap_content -> center when fewer spaces than screen estate -->
+    <!-- needs higher elevation than spaceBarBackground to be rendered above: https://stackoverflow.com/a/27554343 -->
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/spaceBarRecyclerView"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:visibility="gone"
+        android:elevation="80dp"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintBottom_toTopOf="@+id/bottomNavigationView" />
+
     <com.google.android.material.bottomnavigation.BottomNavigationView
         android:id="@+id/bottomNavigationView"
         android:layout_width="0dp"

vector/src/main/res/layout/space_bar_item.xml

@@ -0,0 +1,65 @@
+<?xml version="1.0" encoding="utf-8"?>
+<im.vector.app.core.platform.CheckableConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/spaceRoot"
+    android:layout_width="60dp"
+    android:layout_height="48dp"
+    android:clickable="true"
+    android:focusable="true"
+    android:foreground="?attr/selectableItemBackground"
+    android:background="@drawable/bg_bottom_space_item"
+    android:padding="8dp"
+    android:clipChildren="false"
+    android:clipToPadding="false"
+    tools:viewBindingIgnore="true">
+
+    <ImageView
+        android:id="@+id/spaceImageView"
+        android:layout_width="32dp"
+        android:layout_height="32dp"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent"
+        tools:ignore="ContentDescription"
+        tools:src="@sample/room_round_avatars" />
+
+    <im.vector.app.features.home.room.list.UnreadCounterBadgeView
+        android:id="@+id/spaceUnreadCounterBadgeView"
+        style="@style/Widget.Vector.TextView.Micro"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:gravity="center"
+        android:minWidth="18dp"
+        android:minHeight="18dp"
+        android:textColor="?colorOnError"
+        android:visibility="gone"
+        app:layout_constraintCircle="@id/spaceImageView"
+        app:layout_constraintCircleAngle="45"
+        app:layout_constraintCircleRadius="21dp"
+        tools:background="@drawable/bg_unread_highlight"
+        tools:text="24"
+        tools:visibility="visible" />
+
+
+    <!--
+    <TextView
+        android:id="@+id/spaceTitle"
+        style="@style/Widget.Vector.TextView.Body"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="4dp"
+        android:layout_marginBottom="8dp"
+        android:ellipsize="end"
+        android:importantForAccessibility="no"
+        android:lines="1"
+        android:textColor="?vctr_content_primary"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/spaceImageView"
+        tools:text="Coffee" />
+    -->
+
+</im.vector.app.core.platform.CheckableConstraintLayout>