Use AnnotatedString to handle HTML parsing

app/build.gradle

@@ -295,6 +295,7 @@ dependencies {
     implementation 'androidx.compose.material3:material3'
     implementation 'androidx.activity:activity-compose'
     implementation 'androidx.compose.ui:ui-tooling-preview'
+    implementation 'androidx.compose.ui:ui-text:1.7.0-beta03' // Needed for parsing HTML to AnnotatedString
 
     // Paging
     implementation 'androidx.paging:paging-rxjava3:3.3.0'

app/src/main/java/org/schabi/newpipe/fragments/list/comments/Comment.kt

@@ -18,15 +18,21 @@ import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
 import androidx.compose.runtime.saveable.rememberSaveable
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.AnnotatedString
+import androidx.compose.ui.text.ParagraphStyle
+import androidx.compose.ui.text.fromHtml
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.tooling.preview.PreviewParameter
+import androidx.compose.ui.tooling.preview.PreviewParameterProvider
 import androidx.compose.ui.unit.dp
 import androidx.fragment.app.FragmentActivity
 import coil.compose.AsyncImage
@@ -38,6 +44,18 @@ import org.schabi.newpipe.util.Localization
 import org.schabi.newpipe.util.NavigationHelper
 import org.schabi.newpipe.util.image.ImageStrategy
 
+@Composable
+fun rememberParsedText(commentText: Description): AnnotatedString {
+    // TODO: Handle links and hashtags, Markdown.
+    return remember(commentText) {
+        if (commentText.type == Description.HTML) {
+            AnnotatedString.fromHtml(commentText.content)
+        } else {
+            AnnotatedString(commentText.content, ParagraphStyle())
+        }
+    }
+}
+
 @Composable
 fun Comment(comment: CommentsInfoItem) {
     val context = LocalContext.current
@@ -79,23 +97,22 @@ fun Comment(comment: CommentsInfoItem) {
                         )
                     }
 
-                    val date = Localization.relativeTimeOrTextual(
-                        context, comment.uploadDate, comment.textualUploadDate
-                    )
-                    Text(
-                        text = Localization.concatenateStrings(comment.uploaderName, date),
-                        color = MaterialTheme.colorScheme.secondary
-                    )
+                    val nameAndDate = remember(comment) {
+                        val date = Localization.relativeTimeOrTextual(
+                            context, comment.uploadDate, comment.textualUploadDate
+                        )
+                        Localization.concatenateStrings(comment.uploaderName, date)
+                    }
+                    Text(text = nameAndDate, color = MaterialTheme.colorScheme.secondary)
                 }
 
-                // TODO: Handle HTML and Markdown formats.
                 Text(
-                    text = comment.commentText.content,
+                    text = rememberParsedText(comment.commentText),
                     // If the comment is expanded, we display all its content
                     // otherwise we only display the first two lines
                     maxLines = if (isExpanded) Int.MAX_VALUE else 2,
                     overflow = TextOverflow.Ellipsis,
-                    style = MaterialTheme.typography.bodyMedium
+                    style = MaterialTheme.typography.bodyMedium,
                 )
 
                 Row(horizontalArrangement = Arrangement.spacedBy(8.dp)) {
@@ -138,12 +155,21 @@ fun CommentsInfoItem(
     this.isPinned = isPinned
 }
 
+class DescriptionPreviewProvider : PreviewParameterProvider<Description> {
+    override val values = sequenceOf(
+        Description("Hello world!<br><br>This line should be hidden by default.", Description.HTML),
+        Description("Hello world!\n\nThis line should be hidden by default.", Description.PLAIN_TEXT),
+    )
+}
+
 @Preview(name = "Light mode", uiMode = Configuration.UI_MODE_NIGHT_NO)
 @Preview(name = "Dark mode", uiMode = Configuration.UI_MODE_NIGHT_YES)
 @Composable
-private fun CommentPreview() {
+private fun CommentPreview(
+    @PreviewParameter(DescriptionPreviewProvider::class) description: Description
+) {
     val comment = CommentsInfoItem(
-        commentText = Description("Hello world!\n\nThis line should be hidden by default.", Description.PLAIN_TEXT),
+        commentText = description,
         uploaderName = "Test",
         likeCount = 100,
         isPinned = true,

app/src/main/java/org/schabi/newpipe/fragments/list/comments/CommentReplies.kt

@@ -8,7 +8,6 @@ import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.paging.PagingData
 import androidx.paging.compose.collectAsLazyPagingItems
-import io.reactivex.rxjava3.disposables.CompositeDisposable
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.flowOf
 import org.schabi.newpipe.extractor.comments.CommentsInfoItem
@@ -18,14 +17,13 @@ import org.schabi.newpipe.ui.theme.AppTheme
 @Composable
 fun CommentReplies(
     comment: CommentsInfoItem,
-    flow: Flow<PagingData<CommentsInfoItem>>,
-    disposables: CompositeDisposable
+    flow: Flow<PagingData<CommentsInfoItem>>
 ) {
     val replies = flow.collectAsLazyPagingItems()
 
     LazyColumn {
         item {
-            CommentRepliesHeader(comment = comment, disposables = disposables)
+            CommentRepliesHeader(comment = comment)
             HorizontalDivider(thickness = 1.dp)
         }
 
@@ -58,6 +56,6 @@ private fun CommentRepliesPreview() {
     val flow = flowOf(PagingData.from(listOf(reply1, reply2)))
 
     AppTheme {
-        CommentReplies(comment = comment, flow = flow, disposables = CompositeDisposable())
+        CommentReplies(comment = comment, flow = flow)
     }
 }

app/src/main/java/org/schabi/newpipe/fragments/list/comments/CommentRepliesFragment.kt

@@ -9,13 +9,11 @@ import androidx.compose.ui.platform.ComposeView
 import androidx.fragment.app.Fragment
 import androidx.paging.Pager
 import androidx.paging.PagingConfig
-import io.reactivex.rxjava3.disposables.CompositeDisposable
 import org.schabi.newpipe.extractor.comments.CommentsInfoItem
 import org.schabi.newpipe.ktx.serializable
 import org.schabi.newpipe.ui.theme.AppTheme
 
 class CommentRepliesFragment : Fragment() {
-    private val disposables = CompositeDisposable()
     lateinit var comment: CommentsInfoItem
 
     override fun onCreateView(
@@ -33,17 +31,12 @@ class CommentRepliesFragment : Fragment() {
                 }
 
                 AppTheme {
-                    CommentReplies(comment = comment, flow = flow, disposables = disposables)
+                    CommentReplies(comment = comment, flow = flow)
                 }
             }
         }
     }
 
-    override fun onDestroyView() {
-        super.onDestroyView()
-        disposables.clear()
-    }
-
     companion object {
         @JvmField
         val TAG = CommentRepliesFragment::class.simpleName!!

app/src/main/java/org/schabi/newpipe/fragments/list/comments/CommentRepliesHeader.kt

@@ -1,7 +1,6 @@
 package org.schabi.newpipe.fragments.list.comments
 
 import android.content.res.Configuration
-import android.widget.TextView
 import androidx.compose.foundation.Image
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.Arrangement
@@ -25,24 +24,18 @@ import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
-import androidx.compose.ui.viewinterop.AndroidView
-import androidx.core.text.HtmlCompat
-import androidx.core.text.method.LinkMovementMethodCompat
 import androidx.fragment.app.FragmentActivity
 import coil.compose.AsyncImage
-import io.reactivex.rxjava3.disposables.CompositeDisposable
 import org.schabi.newpipe.R
 import org.schabi.newpipe.extractor.comments.CommentsInfoItem
 import org.schabi.newpipe.extractor.stream.Description
 import org.schabi.newpipe.ui.theme.AppTheme
 import org.schabi.newpipe.util.Localization
 import org.schabi.newpipe.util.NavigationHelper
-import org.schabi.newpipe.util.ServiceHelper
 import org.schabi.newpipe.util.image.ImageStrategy
-import org.schabi.newpipe.util.text.TextLinkifier
 
 @Composable
-fun CommentRepliesHeader(comment: CommentsInfoItem, disposables: CompositeDisposable) {
+fun CommentRepliesHeader(comment: CommentsInfoItem) {
     val context = LocalContext.current
 
     Surface(color = MaterialTheme.colorScheme.background) {
@@ -117,20 +110,9 @@ fun CommentRepliesHeader(comment: CommentsInfoItem, disposables: CompositeDispos
                 }
             }
 
-            AndroidView(
-                factory = { context ->
-                    TextView(context).apply {
-                        movementMethod = LinkMovementMethodCompat.getInstance()
-                    }
-                },
-                update = { view ->
-                    // setup comment content
-                    TextLinkifier.fromDescription(
-                        view, comment.commentText, HtmlCompat.FROM_HTML_MODE_LEGACY,
-                        ServiceHelper.getServiceById(comment.serviceId), comment.url, disposables,
-                        null
-                    )
-                }
+            Text(
+                text = rememberParsedText(comment.commentText),
+                style = MaterialTheme.typography.bodyMedium
             )
         }
     }
@@ -149,6 +131,6 @@ fun CommentRepliesHeaderPreview() {
     )
 
     AppTheme {
-        CommentRepliesHeader(comment, CompositeDisposable())
+        CommentRepliesHeader(comment)
     }
 }