Html : introduce markown lib to handle html rendering.

app/build.gradle

@@ -60,6 +60,7 @@ dependencies {
 
     def epoxy_version = "3.0.0"
     def arrow_version = "0.8.2"
+    def markwon_version = '3.0.0-SNAPSHOT'
 
     implementation project(":matrix-sdk-android")
     implementation project(":matrix-sdk-android-rx")
@@ -97,6 +98,9 @@ dependencies {
     implementation 'com.amulyakhare:com.amulyakhare.textdrawable:1.0.1'
     implementation 'com.google.android.material:material:1.1.0-alpha02'
     implementation 'me.gujun.android:span:1.7'
+    implementation "ru.noties.markwon:core:$markwon_version"
+    implementation "ru.noties.markwon:html:$markwon_version"
+
 
     // DI
     implementation "org.koin:koin-android:$koin_version"

app/src/main/java/im/vector/riotredesign/core/di/AppModule.kt

@@ -22,6 +22,7 @@ import im.vector.riotredesign.core.resources.ColorProvider
 import im.vector.riotredesign.core.resources.LocaleProvider
 import im.vector.riotredesign.core.resources.StringProvider
 import im.vector.riotredesign.features.home.room.list.RoomSelectionRepository
+import im.vector.riotredesign.features.markdown.HtmlRenderer
 import org.koin.dsl.module.module
 
 class AppModule(private val context: Context) {
@@ -48,5 +49,9 @@ class AppModule(private val context: Context) {
             RoomSelectionRepository(get())
         }
 
+        single {
+            HtmlRenderer(context)
+        }
+
     }
 }

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

@@ -33,7 +33,7 @@ class HomeModule {
         }
 
         single {
-            MessageItemFactory(get(), get(), get())
+            MessageItemFactory(get(), get(), get(), get())
         }
 
         single {

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

@@ -29,12 +29,14 @@ import im.vector.riotredesign.core.epoxy.RiotEpoxyModel
 import im.vector.riotredesign.core.extensions.localDateTime
 import im.vector.riotredesign.core.resources.ColorProvider
 import im.vector.riotredesign.features.home.room.detail.timeline.helper.TimelineMediaSizeProvider
+import im.vector.riotredesign.features.markdown.HtmlRenderer
 import im.vector.riotredesign.features.media.MediaContentRenderer
 import me.gujun.android.span.span
 
 class MessageItemFactory(private val colorProvider: ColorProvider,
                          private val timelineMediaSizeProvider: TimelineMediaSizeProvider,
-                         private val timelineDateFormatter: TimelineDateFormatter) {
+                         private val timelineDateFormatter: TimelineDateFormatter,
+                         private val htmlRenderer: HtmlRenderer) {
 
     private val messagesDisplayedWithInformation = HashSet<String?>()
 
@@ -102,9 +104,15 @@ class MessageItemFactory(private val colorProvider: ColorProvider,
                                      informationData: MessageInformationData,
                                      callback: TimelineEventController.Callback?): MessageTextItem? {
 
-        val message = linkifyBody(messageContent.body, callback)
+        val bodyToUse = messageContent.formattedBody
+                ?.let {
+                    htmlRenderer.render(it)
+                }
+                ?: messageContent.body
+
+        val linkifiedBody = linkifyBody(bodyToUse, callback)
         return MessageTextItem_()
-                .message(message)
+                .message(linkifiedBody)
                 .informationData(informationData)
     }
 

app/src/main/java/im/vector/riotredesign/features/markdown/HtmlRenderer.kt

@@ -0,0 +1,63 @@
+/*
+ *
+ *  * 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.markdown
+
+import android.content.Context
+import ru.noties.markwon.AbstractMarkwonPlugin
+import ru.noties.markwon.Markwon
+import ru.noties.markwon.MarkwonVisitor
+import ru.noties.markwon.html.HtmlPlugin
+import ru.noties.markwon.html.HtmlTag
+import ru.noties.markwon.html.MarkwonHtmlRenderer
+import ru.noties.markwon.html.TagHandler
+import timber.log.Timber
+
+class HtmlRenderer(private val context: Context) {
+
+    private val markwon = Markwon.builder(context)
+            .usePlugin(HtmlPlugin.create())
+            .usePlugin(MatrixPlugin.create())
+            .build()
+
+    fun render(text: String): CharSequence {
+        return markwon.toMarkdown(text)
+    }
+
+}
+
+private class MatrixPlugin private constructor() : AbstractMarkwonPlugin() {
+
+    override fun configureHtmlRenderer(builder: MarkwonHtmlRenderer.Builder) {
+        builder.addHandler("mx-reply", MxReplyTagHandler())
+    }
+
+    companion object {
+
+        fun create(): MatrixPlugin {
+            return MatrixPlugin()
+        }
+    }
+}
+
+private class MxReplyTagHandler : TagHandler() {
+    override fun handle(visitor: MarkwonVisitor, renderer: MarkwonHtmlRenderer, tag: HtmlTag) {
+        Timber.v("Handle mx-reply")
+    }
+
+}

build.gradle

@@ -22,6 +22,7 @@ allprojects {
         google()
         jcenter()
         maven { url 'https://jitpack.io' }
+        maven { url 'https://oss.sonatype.org/content/repositories/snapshots/' }
     }
 }