Epoxy : start using viewholder instead of kotlin model as it's more efficient

app/src/main/java/im/vector/riotredesign/features/home/group/GroupSummaryController.kt

@@ -32,14 +32,13 @@ class GroupSummaryController(private val callback: Callback? = null
         }
         summaries.forEach { groupSummary ->
             val isSelected = groupSummary.groupId == selected?.groupId
-            GroupSummaryItem(
+            groupSummaryItem {
-                    groupName = groupSummary.displayName,
+                id(groupSummary.groupId)
-                    avatarUrl = groupSummary.avatarUrl,
+                groupName(groupSummary.displayName)
-                    isSelected = isSelected,
+                selected(isSelected)
-                    listener = { callback?.onGroupSelected(groupSummary) }
+                avatarUrl(groupSummary.avatarUrl)
-            )
+                listener { callback?.onGroupSelected(groupSummary) }
-                    .id(groupSummary.groupId)
+            }
-                    .addTo(this)
         }
     }
 

app/src/main/java/im/vector/riotredesign/features/home/group/GroupSummaryItem.kt

@@ -17,25 +17,32 @@
 package im.vector.riotredesign.features.home.group
 
 import android.widget.ImageView
+import com.airbnb.epoxy.EpoxyAttribute
+import com.airbnb.epoxy.EpoxyModelClass
+import com.airbnb.epoxy.EpoxyModelWithHolder
 import im.vector.riotredesign.R
-import im.vector.riotredesign.core.epoxy.KotlinModel
+import im.vector.riotredesign.core.epoxy.KotlinEpoxyHolder
 import im.vector.riotredesign.core.platform.CheckableFrameLayout
 import im.vector.riotredesign.features.home.AvatarRenderer
 
+@EpoxyModelClass(layout = R.layout.item_group)
+abstract class GroupSummaryItem : EpoxyModelWithHolder<GroupSummaryItem.Holder>() {
 
-data class GroupSummaryItem(
+    @EpoxyAttribute lateinit var groupName: CharSequence
-        val groupName: CharSequence,
+    @EpoxyAttribute var avatarUrl: String? = null
-        val avatarUrl: String?,
+    @EpoxyAttribute var selected: Boolean = false
-        val isSelected: Boolean,
+    @EpoxyAttribute var listener: (() -> Unit)? = null
-        val listener: (() -> Unit)? = null
-) : KotlinModel(R.layout.item_group) {
 
-    private val avatarImageView by bind<ImageView>(R.id.groupAvatarImageView)
+    override fun bind(holder: Holder) {
-    private val rootView by bind<CheckableFrameLayout>(R.id.itemGroupLayout)
+        super.bind(holder)
-
+        holder.rootView.isSelected = selected
-    override fun bind() {
+        holder.rootView.setOnClickListener { listener?.invoke() }
-        rootView.isSelected = isSelected
+        AvatarRenderer.render(avatarUrl, groupName.toString(), holder.avatarImageView)
-        rootView.setOnClickListener { listener?.invoke() }
-        AvatarRenderer.render(avatarUrl, groupName.toString(), avatarImageView)
     }
+
+    class Holder : KotlinEpoxyHolder() {
+        val avatarImageView by bind<ImageView>(R.id.groupAvatarImageView)
+        val rootView by bind<CheckableFrameLayout>(R.id.itemGroupLayout)
+    }
+
 }

app/src/main/java/im/vector/riotredesign/features/home/room/list/RoomCategoryItem.kt

@@ -20,33 +20,39 @@ import android.view.ViewGroup
 import android.widget.TextView
 import androidx.core.content.ContextCompat
 import androidx.core.graphics.drawable.DrawableCompat
+import com.airbnb.epoxy.EpoxyAttribute
+import com.airbnb.epoxy.EpoxyModelClass
+import com.airbnb.epoxy.EpoxyModelWithHolder
 import im.vector.riotredesign.R
-import im.vector.riotredesign.core.epoxy.KotlinModel
+import im.vector.riotredesign.core.epoxy.KotlinEpoxyHolder
 
-data class RoomCategoryItem(
+@EpoxyModelClass(layout = R.layout.item_room_category)
-        val title: CharSequence,
+abstract class RoomCategoryItem : EpoxyModelWithHolder<RoomCategoryItem.Holder>() {
-        val isExpanded: Boolean,
-        val unreadCount: Int,
-        val showHighlighted: Boolean,
-        val listener: (() -> Unit)? = null
-) : KotlinModel(R.layout.item_room_category) {
 
-    private val unreadCounterBadgeView by bind<UnreadCounterBadgeView>(R.id.roomCategoryUnreadCounterBadgeView)
+    @EpoxyAttribute lateinit var title: CharSequence
-    private val titleView by bind<TextView>(R.id.roomCategoryTitleView)
+    @EpoxyAttribute var expanded: Boolean = false
-    private val rootView by bind<ViewGroup>(R.id.roomCategoryRootView)
+    @EpoxyAttribute var unreadCount: Int = 0
+    @EpoxyAttribute var showHighlighted: Boolean = false
+    @EpoxyAttribute var listener: (() -> Unit)? = null
 
-    private val tintColor by lazy {
+    override fun bind(holder: Holder) {
-        ContextCompat.getColor(rootView.context, R.color.bluey_grey_two)
+        val tintColor = ContextCompat.getColor(holder.rootView.context, R.color.bluey_grey_two)
-    }
+        val expandedArrowDrawableRes = if (expanded) R.drawable.ic_expand_more_white else R.drawable.ic_expand_less_white
-
+        val expandedArrowDrawable = ContextCompat.getDrawable(holder.rootView.context, expandedArrowDrawableRes)?.also {
-    override fun bind() {
-        val expandedArrowDrawableRes = if (isExpanded) R.drawable.ic_expand_more_white else R.drawable.ic_expand_less_white
-        val expandedArrowDrawable = ContextCompat.getDrawable(rootView.context, expandedArrowDrawableRes)?.also {
             DrawableCompat.setTint(it, tintColor)
         }
-        unreadCounterBadgeView.render(unreadCount, showHighlighted)
+        holder.unreadCounterBadgeView.render(unreadCount, showHighlighted)
-        titleView.setCompoundDrawablesWithIntrinsicBounds(expandedArrowDrawable, null, null, null)
+        holder.titleView.setCompoundDrawablesWithIntrinsicBounds(expandedArrowDrawable, null, null, null)
-        titleView.text = title
+        holder.titleView.text = title
-        rootView.setOnClickListener { listener?.invoke() }
+        holder.rootView.setOnClickListener { listener?.invoke() }
     }
+
+
+    class Holder : KotlinEpoxyHolder() {
+        val unreadCounterBadgeView by bind<UnreadCounterBadgeView>(R.id.roomCategoryUnreadCounterBadgeView)
+        val titleView by bind<TextView>(R.id.roomCategoryTitleView)
+        val rootView by bind<ViewGroup>(R.id.roomCategoryRootView)
+    }
+
 }
+

app/src/main/java/im/vector/riotredesign/features/home/room/list/RoomSummaryController.kt

@@ -85,18 +85,17 @@ class RoomSummaryController(private val stringProvider: StringProvider
             summaries.map { it.notificationCount }.reduce { acc, i -> acc + i }
         }
         val showHighlighted = summaries.any { it.highlightCount > 0 }
-        RoomCategoryItem(
+        roomCategoryItem {
-                title = stringProvider.getString(titleRes).toUpperCase(),
+            id(titleRes)
-                isExpanded = isExpanded,
+            title(stringProvider.getString(titleRes).toUpperCase())
-                unreadCount = unreadCount,
+            expanded(isExpanded)
-                showHighlighted = showHighlighted,
+            unreadCount(unreadCount)
-                listener = {
+            showHighlighted(showHighlighted)
+            listener {
                 mutateExpandedState()
                 setData(viewState)
             }
-        )
+        }
-                .id(titleRes)
-                .addTo(this)
     }
 
     private fun buildRoomModels(summaries: List<RoomSummary>, selectedRoomId: String?) {
@@ -104,16 +103,16 @@ class RoomSummaryController(private val stringProvider: StringProvider
             val unreadCount = roomSummary.notificationCount
             val showHighlighted = roomSummary.highlightCount > 0
             val isSelected = roomSummary.roomId == selectedRoomId
-            RoomSummaryItem(
+
-                    roomName = roomSummary.displayName,
+            roomSummaryItem {
-                    avatarUrl = roomSummary.avatarUrl,
+                id(roomSummary.roomId)
-                    isSelected = isSelected,
+                roomName(roomSummary.displayName)
-                    showHighlighted = showHighlighted,
+                avatarUrl(roomSummary.avatarUrl)
-                    unreadCount = unreadCount,
+                selected(isSelected)
-                    listener = { callback?.onRoomSelected(roomSummary) }
+                showHighlighted(showHighlighted)
-            )
+                unreadCount(unreadCount)
-                    .id(roomSummary.roomId)
+                listener { callback?.onRoomSelected(roomSummary) }
-                    .addTo(this)
+            }
         }
     }
 

app/src/main/java/im/vector/riotredesign/features/home/room/list/RoomSummaryItem.kt

@@ -18,31 +18,40 @@ package im.vector.riotredesign.features.home.room.list
 
 import android.widget.ImageView
 import android.widget.TextView
+import com.airbnb.epoxy.EpoxyAttribute
+import com.airbnb.epoxy.EpoxyModelClass
+import com.airbnb.epoxy.EpoxyModelWithHolder
 import im.vector.riotredesign.R
-import im.vector.riotredesign.core.epoxy.KotlinModel
+import im.vector.riotredesign.core.epoxy.KotlinEpoxyHolder
 import im.vector.riotredesign.core.platform.CheckableFrameLayout
 import im.vector.riotredesign.features.home.AvatarRenderer
 
 
-data class RoomSummaryItem(
+@EpoxyModelClass(layout = R.layout.item_room)
-        val roomName: CharSequence,
+abstract class RoomSummaryItem : EpoxyModelWithHolder<RoomSummaryItem.Holder>() {
-        val avatarUrl: String?,
-        val isSelected: Boolean,
-        val unreadCount: Int,
-        val showHighlighted: Boolean,
-        val listener: (() -> Unit)? = null
-) : KotlinModel(R.layout.item_room) {
 
-    private val unreadCounterBadgeView by bind<UnreadCounterBadgeView>(R.id.roomUnreadCounterBadgeView)
+    @EpoxyAttribute lateinit var roomName: CharSequence
-    private val titleView by bind<TextView>(R.id.roomNameView)
+    @EpoxyAttribute var avatarUrl: String? = null
-    private val avatarImageView by bind<ImageView>(R.id.roomAvatarImageView)
+    @EpoxyAttribute var selected: Boolean = false
-    private val rootView by bind<CheckableFrameLayout>(R.id.itemRoomLayout)
+    @EpoxyAttribute var unreadCount: Int = 0
+    @EpoxyAttribute var showHighlighted: Boolean = false
+    @EpoxyAttribute var listener: (() -> Unit)? = null
 
-    override fun bind() {
+
-        unreadCounterBadgeView.render(unreadCount, showHighlighted)
+    override fun bind(holder: Holder) {
-        rootView.isChecked = isSelected
+        super.bind(holder)
-        rootView.setOnClickListener { listener?.invoke() }
+        holder.unreadCounterBadgeView.render(unreadCount, showHighlighted)
-        titleView.text = roomName
+        holder.rootView.isChecked = selected
-        AvatarRenderer.render(avatarUrl, roomName.toString(), avatarImageView)
+        holder.rootView.setOnClickListener { listener?.invoke() }
+        holder.titleView.text = roomName
+        AvatarRenderer.render(avatarUrl, roomName.toString(), holder.avatarImageView)
     }
+
+    class Holder : KotlinEpoxyHolder() {
+        val unreadCounterBadgeView by bind<UnreadCounterBadgeView>(R.id.roomUnreadCounterBadgeView)
+        val titleView by bind<TextView>(R.id.roomNameView)
+        val avatarImageView by bind<ImageView>(R.id.roomAvatarImageView)
+        val rootView by bind<CheckableFrameLayout>(R.id.itemRoomLayout)
+    }
+
 }