Media : exposes the view to allow animation.

app/src/main/java/im/vector/riotredesign/features/home/room/detail/RoomDetailFragment.kt

@@ -45,6 +45,7 @@ import org.koin.android.scope.ext.android.bindScope
 import org.koin.android.scope.ext.android.getOrCreateScope
 import org.koin.core.parameter.parametersOf
 
+
 @Parcelize
 data class RoomDetailArgs(
         val roomId: String,
@@ -166,7 +167,7 @@ class RoomDetailFragment : RiotFragment(), TimelineEventController.Callback {
         roomDetailViewModel.process(RoomDetailActions.EventDisplayed(event, index))
     }
 
-    override fun onMediaClicked(mediaData: MediaContentRenderer.Data) {
+    override fun onMediaClicked(mediaData: MediaContentRenderer.Data, view: View) {
         val intent = MediaViewerActivity.newIntent(riotActivity, mediaData)
         startActivity(intent)
     }

app/src/main/java/im/vector/riotredesign/features/home/room/detail/timeline/TimelineEventController.kt

@@ -16,6 +16,7 @@
 
 package im.vector.riotredesign.features.home.room.detail.timeline
 
+import android.view.View
 import androidx.recyclerview.widget.RecyclerView
 import com.airbnb.epoxy.EpoxyAsyncUtil
 import com.airbnb.epoxy.EpoxyModel
@@ -103,7 +104,7 @@ class TimelineEventController(private val dateFormatter: TimelineDateFormatter,
     interface Callback {
         fun onEventVisible(event: TimelineEvent, index: Int)
         fun onUrlClicked(url: String)
-        fun onMediaClicked(mediaData: MediaContentRenderer.Data)
+        fun onMediaClicked(mediaData: MediaContentRenderer.Data, view: View)
     }
 
 }

app/src/main/java/im/vector/riotredesign/features/home/room/detail/timeline/factory/MessageItemFactory.kt

@@ -104,7 +104,7 @@ class MessageItemFactory(private val colorProvider: ColorProvider,
         return MessageImageItem_()
                 .informationData(informationData)
                 .mediaData(data)
-                .clickListener { callback?.onMediaClicked(data) }
+                .clickListener { view -> callback?.onMediaClicked(data, view) }
     }
 
     private fun buildTextMessageItem(messageContent: MessageTextContent,

app/src/main/java/im/vector/riotredesign/features/home/room/detail/timeline/item/MessageImageItem.kt

@@ -16,6 +16,7 @@
 
 package im.vector.riotredesign.features.home.room.detail.timeline.item
 
+import android.view.View
 import android.widget.ImageView
 import android.widget.TextView
 import com.airbnb.epoxy.EpoxyAttribute
@@ -28,12 +29,12 @@ abstract class MessageImageItem : AbsMessageItem<MessageImageItem.Holder>() {
 
     @EpoxyAttribute lateinit var mediaData: MediaContentRenderer.Data
     @EpoxyAttribute override lateinit var informationData: MessageInformationData
-    @EpoxyAttribute var clickListener: (() -> Unit)? = null
+    @EpoxyAttribute var clickListener: View.OnClickListener? = null
 
     override fun bind(holder: Holder) {
         super.bind(holder)
         MediaContentRenderer.render(mediaData, MediaContentRenderer.Mode.THUMBNAIL, holder.imageView)
-        holder.imageView.setOnClickListener { clickListener?.invoke() }
+        holder.imageView.setOnClickListener(clickListener)
     }
 
     class Holder : AbsMessageItem.Holder() {

app/src/main/java/im/vector/riotredesign/features/media/DefaultImageLoaderCallback.kt

@@ -0,0 +1,53 @@
+/*
+ *
+ *  * Copyright 2019 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.riotredesign.features.media
+
+import com.github.piasy.biv.loader.ImageLoader
+import java.io.File
+
+interface DefaultImageLoaderCallback : ImageLoader.Callback {
+
+    override fun onFinish() {
+        //no-op
+    }
+
+    override fun onSuccess(image: File?) {
+        //no-op
+    }
+
+    override fun onFail(error: Exception?) {
+        //no-op
+    }
+
+    override fun onCacheHit(imageType: Int, image: File?) {
+        //no-op
+    }
+
+    override fun onCacheMiss(imageType: Int, image: File?) {
+        //no-op
+    }
+
+    override fun onProgress(progress: Int) {
+        //no-op
+    }
+
+    override fun onStart() {
+        //no-op
+    }
+}