From 95d792779e98b8a4180ed50f3d945865b406b127 Mon Sep 17 00:00:00 2001
From: Docile-Alligator <chineseperson5@gmail.com>
Date: Sat, 2 Apr 2022 15:50:12 +0800
Subject: Render full markdown in CommentsRecyclerViewAdapter.

---
 .../adapters/CommentsRecyclerViewAdapter.java      |  90 ++++++--
 .../adapters/PostDetailRecyclerViewAdapter.java    |   2 +-
 .../customviews/CustomMarkwonAdapter.java          | 235 +++++++++++++++++++++
 app/src/main/res/layout/adapter_default_entry.xml  |   2 +-
 app/src/main/res/layout/item_comment.xml           |  16 +-
 5 files changed, 314 insertions(+), 31 deletions(-)
 create mode 100644 app/src/main/java/ml/docilealligator/infinityforreddit/customviews/CustomMarkwonAdapter.java

(limited to 'app/src/main')

diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/CommentsRecyclerViewAdapter.java b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/CommentsRecyclerViewAdapter.java
index 19fad657..6a0d3c53 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/CommentsRecyclerViewAdapter.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/CommentsRecyclerViewAdapter.java
@@ -9,6 +9,7 @@ import android.graphics.drawable.Drawable;
 import android.net.Uri;
 import android.os.Bundle;
 import android.os.Handler;
+import android.text.Spanned;
 import android.text.util.Linkify;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -33,6 +34,8 @@ import com.bumptech.glide.RequestManager;
 import com.bumptech.glide.request.RequestOptions;
 import com.lsjwzh.widget.materialloadingprogressbar.CircleProgressBar;
 
+import org.commonmark.ext.gfm.tables.TableBlock;
+
 import java.util.ArrayList;
 import java.util.Locale;
 import java.util.concurrent.Executor;
@@ -52,6 +55,8 @@ import io.noties.markwon.inlineparser.HtmlInlineProcessor;
 import io.noties.markwon.inlineparser.MarkwonInlineParserPlugin;
 import io.noties.markwon.linkify.LinkifyPlugin;
 import io.noties.markwon.movement.MovementMethodPlugin;
+import io.noties.markwon.recycler.table.TableEntry;
+import io.noties.markwon.recycler.table.TableEntryPlugin;
 import jp.wasabeef.glide.transformations.RoundedCornersTransformation;
 import me.saket.bettermovementmethod.BetterLinkMovementMethod;
 import ml.docilealligator.infinityforreddit.R;
@@ -68,6 +73,9 @@ import ml.docilealligator.infinityforreddit.comment.Comment;
 import ml.docilealligator.infinityforreddit.comment.FetchComment;
 import ml.docilealligator.infinityforreddit.customtheme.CustomThemeWrapper;
 import ml.docilealligator.infinityforreddit.customviews.CommentIndentationView;
+import ml.docilealligator.infinityforreddit.customviews.CustomMarkwonAdapter;
+import ml.docilealligator.infinityforreddit.customviews.LinearLayoutManagerBugFixed;
+import ml.docilealligator.infinityforreddit.customviews.MarkwonLinearLayoutManager;
 import ml.docilealligator.infinityforreddit.customviews.SpoilerOnClickTextView;
 import ml.docilealligator.infinityforreddit.fragments.ViewPostDetailFragment;
 import ml.docilealligator.infinityforreddit.markdown.SpoilerParserPlugin;
@@ -101,6 +109,7 @@ public class CommentsRecyclerViewAdapter extends RecyclerView.Adapter<RecyclerVi
     private ArrayList<Comment> mVisibleComments;
     private Locale mLocale;
     private RequestManager mGlide;
+    private RecyclerView.RecycledViewPool recycledViewPool;
     private String mSingleCommentId;
     private boolean mIsSingleCommentThreadMode;
     private boolean mVoteButtonsOnTheRight;
@@ -189,6 +198,15 @@ public class CommentsRecyclerViewAdapter extends RecyclerView.Adapter<RecyclerVi
                         return Utils.fixSuperScript(markdown);
                     }
 
+                    @Override
+                    public void beforeSetText(@NonNull TextView textView, @NonNull Spanned markdown) {
+                        if (mActivity.contentTypeface != null) {
+                            textView.setTypeface(mActivity.contentTypeface);
+                        }
+                        textView.setTextColor(mCommentTextColor);
+                        textView.setHighlightColor(Color.TRANSPARENT);
+                    }
+
                     @Override
                     public void configureConfiguration(@NonNull MarkwonConfiguration.Builder builder) {
                         builder.linkResolver((view, link) -> {
@@ -207,7 +225,7 @@ public class CommentsRecyclerViewAdapter extends RecyclerView.Adapter<RecyclerVi
                 })
                 .usePlugin(SpoilerParserPlugin.create(mCommentTextColor, commentSpoilerBackgroundColor))
                 .usePlugin(StrikethroughPlugin.create())
-                .usePlugin(MovementMethodPlugin.create(BetterLinkMovementMethod.newInstance().setOnLinkLongClickListener((textView, url) -> {
+                .usePlugin(MovementMethodPlugin.create(BetterLinkMovementMethod.linkify(Linkify.WEB_URLS).setOnLinkLongClickListener((textView, url) -> {
                     if (!activity.isDestroyed() && !activity.isFinishing()) {
                         UrlMenuBottomSheetFragment urlMenuBottomSheetFragment = new UrlMenuBottomSheetFragment();
                         Bundle bundle = new Bundle();
@@ -218,7 +236,9 @@ public class CommentsRecyclerViewAdapter extends RecyclerView.Adapter<RecyclerVi
                     return true;
                 })))
                 .usePlugin(LinkifyPlugin.create(Linkify.WEB_URLS))
+                .usePlugin(TableEntryPlugin.create(mActivity))
                 .build();
+        recycledViewPool = new RecyclerView.RecycledViewPool();
         mAccessToken = accessToken;
         mAccountName = accountName;
         mPost = post;
@@ -447,7 +467,8 @@ public class CommentsRecyclerViewAdapter extends RecyclerView.Adapter<RecyclerVi
                     Utils.setHTMLWithImageToTextView(((CommentViewHolder) holder).awardsTextView, comment.getAwards(), true);
                 }
 
-                mCommentMarkwon.setMarkdown(((CommentViewHolder) holder).commentMarkdownView, comment.getCommentMarkdown());
+                ((CommentViewHolder) holder).mMarkwonAdapter.setMarkdown(mCommentMarkwon, comment.getCommentMarkdown());
+                ((CommentViewHolder) holder).mMarkwonAdapter.notifyDataSetChanged();
                 ((CommentViewHolder) holder).scoreTextView.setText(Utils.getNVotes(mShowAbsoluteNumberOfVotes,
                         comment.getScore() + comment.getVoteType()));
                 ((CommentViewHolder) holder).topScoreTextView.setText(mActivity.getString(R.string.top_score,
@@ -1143,7 +1164,7 @@ public class CommentsRecyclerViewAdapter extends RecyclerView.Adapter<RecyclerVi
         @BindView(R.id.awards_text_view_item_comment)
         TextView awardsTextView;
         @BindView(R.id.comment_markdown_view_item_post_comment)
-        SpoilerOnClickTextView commentMarkdownView;
+        RecyclerView commentMarkdownView;
         @BindView(R.id.bottom_constraint_layout_item_post_comment)
         ConstraintLayout bottomConstraintLayout;
         @BindView(R.id.up_vote_button_item_post_comment)
@@ -1166,6 +1187,7 @@ public class CommentsRecyclerViewAdapter extends RecyclerView.Adapter<RecyclerVi
         CommentIndentationView commentIndentationView;
         @BindView(R.id.divider_item_comment)
         View commentDivider;
+        CustomMarkwonAdapter mMarkwonAdapter;
 
         CommentViewHolder(View itemView) {
             super(itemView);
@@ -1225,9 +1247,6 @@ public class CommentsRecyclerViewAdapter extends RecyclerView.Adapter<RecyclerVi
                 scoreTextView.setTypeface(mActivity.typeface);
                 expandButton.setTypeface(mActivity.typeface);
             }
-            if (mActivity.contentTypeface != null) {
-                commentMarkdownView.setTypeface(mActivity.contentTypeface);
-            }
 
             if (mShowAuthorAvatar) {
                 authorIconImageView.setVisibility(View.VISIBLE);
@@ -1236,10 +1255,29 @@ public class CommentsRecyclerViewAdapter extends RecyclerView.Adapter<RecyclerVi
                 ((ConstraintLayout.LayoutParams) authorFlairTextView.getLayoutParams()).leftMargin = 0;
             }
 
+            commentMarkdownView.setRecycledViewPool(recycledViewPool);
+            LinearLayoutManagerBugFixed linearLayoutManager = new MarkwonLinearLayoutManager(mActivity, new MarkwonLinearLayoutManager.HorizontalScrollViewScrolledListener() {
+                @Override
+                public void onScrolledLeft() {
+                    ((ViewPostDetailActivity) mActivity).lockSwipeRightToGoBack();
+                }
+
+                @Override
+                public void onScrolledRight() {
+                    ((ViewPostDetailActivity) mActivity).unlockSwipeRightToGoBack();
+                }
+            });
+            commentMarkdownView.setLayoutManager(linearLayoutManager);
+            mMarkwonAdapter = CustomMarkwonAdapter.builder(R.layout.adapter_default_entry, R.id.text)
+                    .include(TableBlock.class, TableEntry.create(builder -> builder
+                            .tableLayout(R.layout.adapter_table_block, R.id.table_layout)
+                            .textLayoutIsRoot(R.layout.view_table_entry_cell)))
+                    .build();
+            commentMarkdownView.setAdapter(mMarkwonAdapter);
+
             itemView.setBackgroundColor(mCommentBackgroundColor);
             authorTextView.setTextColor(mUsernameColor);
             commentTimeTextView.setTextColor(mSecondaryTextColor);
-            commentMarkdownView.setTextColor(mCommentTextColor);
             authorFlairTextView.setTextColor(mAuthorFlairTextColor);
             topScoreTextView.setTextColor(mSecondaryTextColor);
             awardsTextView.setTextColor(mSecondaryTextColor);
@@ -1572,23 +1610,34 @@ public class CommentsRecyclerViewAdapter extends RecyclerView.Adapter<RecyclerVi
                 if (mCommentToolbarHideOnClick) {
                     View.OnLongClickListener hideToolbarOnLongClickListener = view -> hideToolbar();
                     itemView.setOnLongClickListener(hideToolbarOnLongClickListener);
-                    commentMarkdownView.setOnLongClickListener(hideToolbarOnLongClickListener);
                     commentTimeTextView.setOnLongClickListener(hideToolbarOnLongClickListener);
+                    mMarkwonAdapter.setOnLongClickListener(v -> {
+                        if (v instanceof TextView) {
+                            if (((TextView) v).getSelectionStart() == -1 && ((TextView) v).getSelectionEnd() == -1) {
+                                hideToolbar();
+                            }
+                        }
+                        return true;
+                    });
                 }
-                commentMarkdownView.setOnClickListener(view -> {
-                    if (commentMarkdownView.isSpoilerOnClick()) {
-                        commentMarkdownView.setSpoilerOnClick(false);
-                        return;
+                mMarkwonAdapter.setOnClickListener(v -> {
+                    if (v instanceof SpoilerOnClickTextView) {
+                        if (((SpoilerOnClickTextView) v).isSpoilerOnClick()) {
+                            ((SpoilerOnClickTextView) v).setSpoilerOnClick(false);
+                            return;
+                        }
                     }
                     expandComments();
                 });
                 itemView.setOnClickListener(view -> expandComments());
             } else {
                 if (mCommentToolbarHideOnClick) {
-                    commentMarkdownView.setOnClickListener(view -> {
-                        if (commentMarkdownView.isSpoilerOnClick()) {
-                            commentMarkdownView.setSpoilerOnClick(false);
-                            return;
+                    mMarkwonAdapter.setOnClickListener(view -> {
+                        if (view instanceof SpoilerOnClickTextView) {
+                            if (((SpoilerOnClickTextView) view).isSpoilerOnClick()) {
+                                ((SpoilerOnClickTextView) view).setSpoilerOnClick(false);
+                                return;
+                            }
                         }
                         hideToolbar();
                     });
@@ -1596,9 +1645,11 @@ public class CommentsRecyclerViewAdapter extends RecyclerView.Adapter<RecyclerVi
                     itemView.setOnClickListener(hideToolbarOnClickListener);
                     commentTimeTextView.setOnClickListener(hideToolbarOnClickListener);
                 }
-                commentMarkdownView.setOnLongClickListener(view -> {
-                    if (commentMarkdownView.getSelectionStart() == -1 && commentMarkdownView.getSelectionEnd() == -1) {
-                        expandComments();
+                mMarkwonAdapter.setOnLongClickListener(view -> {
+                    if (view instanceof TextView) {
+                        if (((TextView) view).getSelectionStart() == -1 && ((TextView) view).getSelectionEnd() == -1) {
+                            expandComments();
+                        }
                     }
                     return true;
                 });
@@ -1607,7 +1658,6 @@ public class CommentsRecyclerViewAdapter extends RecyclerView.Adapter<RecyclerVi
                     return true;
                 });
             }
-            commentMarkdownView.setHighlightColor(Color.TRANSPARENT);
         }
 
         private boolean expandComments() {
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/PostDetailRecyclerViewAdapter.java b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/PostDetailRecyclerViewAdapter.java
index 983c887a..ba59a7fd 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/PostDetailRecyclerViewAdapter.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/PostDetailRecyclerViewAdapter.java
@@ -259,7 +259,7 @@ public class PostDetailRecyclerViewAdapter extends RecyclerView.Adapter<Recycler
                     @Override
                     public void beforeSetText(@NonNull TextView textView, @NonNull Spanned markdown) {
                         if (mActivity.contentTypeface != null) {
-                            textView.setTypeface(mActivity.typeface);
+                            textView.setTypeface(mActivity.contentTypeface);
                         }
                         textView.setTextColor(markdownColor);
                         textView.setOnLongClickListener(view -> {
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/customviews/CustomMarkwonAdapter.java b/app/src/main/java/ml/docilealligator/infinityforreddit/customviews/CustomMarkwonAdapter.java
new file mode 100644
index 00000000..fb10d036
--- /dev/null
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/customviews/CustomMarkwonAdapter.java
@@ -0,0 +1,235 @@
+package ml.docilealligator.infinityforreddit.customviews;
+
+import android.util.SparseArray;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.HorizontalScrollView;
+import android.widget.TableLayout;
+import android.widget.TableRow;
+import android.widget.TextView;
+
+import androidx.annotation.IdRes;
+import androidx.annotation.LayoutRes;
+import androidx.annotation.NonNull;
+
+import org.commonmark.node.Node;
+
+import java.util.Collections;
+import java.util.List;
+
+import io.noties.markwon.Markwon;
+import io.noties.markwon.MarkwonReducer;
+import io.noties.markwon.recycler.MarkwonAdapter;
+import io.noties.markwon.recycler.SimpleEntry;
+import ml.docilealligator.infinityforreddit.R;
+
+public class CustomMarkwonAdapter extends MarkwonAdapter {
+    private final SparseArray<Entry<Node, Holder>> entries;
+    private final Entry<Node, Holder> defaultEntry;
+    private final MarkwonReducer reducer;
+
+    private LayoutInflater layoutInflater;
+
+    private Markwon markwon;
+    private List<Node> nodes;
+
+    private View.OnClickListener onClickListener;
+    private View.OnLongClickListener onLongClickListener;
+
+    @SuppressWarnings("WeakerAccess")
+    CustomMarkwonAdapter(
+            @NonNull SparseArray<Entry<Node, Holder>> entries,
+            @NonNull Entry<Node, Holder> defaultEntry,
+            @NonNull MarkwonReducer reducer) {
+        this.entries = entries;
+        this.defaultEntry = defaultEntry;
+        this.reducer = reducer;
+
+        setHasStableIds(true);
+    }
+
+    public void setOnClickListener(View.OnClickListener onClickListener) {
+        this.onClickListener = onClickListener;
+    }
+
+    public void setOnLongClickListener(View.OnLongClickListener onLongClickListener) {
+        this.onLongClickListener = onLongClickListener;
+    }
+
+    @NonNull
+    public static CustomBuilderImpl builder(
+            @LayoutRes int defaultEntryLayoutResId,
+            @IdRes int defaultEntryTextViewResId
+    ) {
+        return builder(SimpleEntry.create(defaultEntryLayoutResId, defaultEntryTextViewResId));
+    }
+
+    @NonNull
+    public static CustomBuilderImpl builder(@NonNull Entry<? extends Node, ? extends Holder> defaultEntry) {
+        //noinspection unchecked
+        return new CustomBuilderImpl((Entry<Node, Holder>) defaultEntry);
+    }
+
+    @Override
+    public void setMarkdown(@NonNull Markwon markwon, @NonNull String markdown) {
+        setParsedMarkdown(markwon, markwon.parse(markdown));
+    }
+
+    @Override
+    public void setParsedMarkdown(@NonNull Markwon markwon, @NonNull Node document) {
+        setParsedMarkdown(markwon, reducer.reduce(document));
+    }
+
+    @Override
+    public void setParsedMarkdown(@NonNull Markwon markwon, @NonNull List<Node> nodes) {
+        // clear all entries before applying
+
+        defaultEntry.clear();
+
+        for (int i = 0, size = entries.size(); i < size; i++) {
+            entries.valueAt(i).clear();
+        }
+
+        this.markwon = markwon;
+        this.nodes = nodes;
+    }
+
+    @NonNull
+    @Override
+    public Holder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+
+        if (layoutInflater == null) {
+            layoutInflater = LayoutInflater.from(parent.getContext());
+        }
+
+        final Entry<Node, Holder> entry = getEntry(viewType);
+
+        return entry.createHolder(layoutInflater, parent);
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull Holder holder, int position) {
+
+        final Node node = nodes.get(position);
+        final int viewType = getNodeViewType(node.getClass());
+
+        final Entry<Node, Holder> entry = getEntry(viewType);
+
+        entry.bindHolder(markwon, holder, node);
+
+        if (holder.itemView instanceof SpoilerOnClickTextView) {
+            holder.itemView.setOnClickListener(onClickListener);
+            holder.itemView.setOnLongClickListener(onLongClickListener);
+        } else if (holder.itemView instanceof HorizontalScrollView) {
+            TableLayout tableLayout = holder.itemView.findViewById(R.id.table_layout);
+            if (tableLayout != null) {
+                for (int i = 0; i < tableLayout.getChildCount(); i++) {
+                    if (tableLayout.getChildAt(i) instanceof TableRow) {
+                        TableRow tableRow = ((TableRow) tableLayout.getChildAt(i));
+                        for (int j = 0; j < tableRow.getChildCount(); j++) {
+                            if (tableRow.getChildAt(j) instanceof TextView) {
+                                tableRow.getChildAt(j).setOnClickListener(onClickListener);
+                                tableRow.getChildAt(j).setOnLongClickListener(onLongClickListener);
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    @Override
+    public int getItemCount() {
+        return nodes != null
+                ? nodes.size()
+                : 0;
+    }
+
+    @Override
+    public void onViewRecycled(@NonNull Holder holder) {
+        super.onViewRecycled(holder);
+
+        final Entry<Node, Holder> entry = getEntry(holder.getItemViewType());
+        entry.onViewRecycled(holder);
+    }
+
+    @SuppressWarnings("unused")
+    @NonNull
+    public List<Node> getItems() {
+        return nodes != null
+                ? Collections.unmodifiableList(nodes)
+                : Collections.<Node>emptyList();
+    }
+
+    @Override
+    public int getItemViewType(int position) {
+        return getNodeViewType(nodes.get(position).getClass());
+    }
+
+    @Override
+    public long getItemId(int position) {
+        final Node node = nodes.get(position);
+        final int type = getNodeViewType(node.getClass());
+        final Entry<Node, Holder> entry = getEntry(type);
+        return entry.id(node);
+    }
+
+    @Override
+    public int getNodeViewType(@NonNull Class<? extends Node> node) {
+        // if has registered -> then return it, else 0
+        final int hash = node.hashCode();
+        if (entries.indexOfKey(hash) > -1) {
+            return hash;
+        }
+        return 0;
+    }
+
+    @NonNull
+    private Entry<Node, Holder> getEntry(int viewType) {
+        return viewType == 0
+                ? defaultEntry
+                : entries.get(viewType);
+    }
+
+    public static class CustomBuilderImpl implements Builder {
+
+        private final SparseArray<Entry<Node, Holder>> entries = new SparseArray<>(3);
+
+        private final Entry<Node, Holder> defaultEntry;
+
+        private MarkwonReducer reducer;
+
+        CustomBuilderImpl(@NonNull Entry<Node, Holder> defaultEntry) {
+            this.defaultEntry = defaultEntry;
+        }
+
+        @NonNull
+        @Override
+        public <N extends Node> CustomBuilderImpl include(
+                @NonNull Class<N> node,
+                @NonNull Entry<? super N, ? extends Holder> entry) {
+            //noinspection unchecked
+            entries.append(node.hashCode(), (Entry<Node, Holder>) entry);
+            return this;
+        }
+
+        @NonNull
+        @Override
+        public CustomBuilderImpl reducer(@NonNull MarkwonReducer reducer) {
+            this.reducer = reducer;
+            return this;
+        }
+
+        @NonNull
+        @Override
+        public CustomMarkwonAdapter build() {
+
+            if (reducer == null) {
+                reducer = MarkwonReducer.directChildren();
+            }
+
+            return new CustomMarkwonAdapter(entries, defaultEntry, reducer);
+        }
+    }
+}
diff --git a/app/src/main/res/layout/adapter_default_entry.xml b/app/src/main/res/layout/adapter_default_entry.xml
index a02d03f0..b011fbf5 100644
--- a/app/src/main/res/layout/adapter_default_entry.xml
+++ b/app/src/main/res/layout/adapter_default_entry.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<TextView xmlns:android="http://schemas.android.com/apk/res/android"
+<ml.docilealligator.infinityforreddit.customviews.SpoilerOnClickTextView xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/text"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
diff --git a/app/src/main/res/layout/item_comment.xml b/app/src/main/res/layout/item_comment.xml
index b62106f8..06ac8c02 100644
--- a/app/src/main/res/layout/item_comment.xml
+++ b/app/src/main/res/layout/item_comment.xml
@@ -119,16 +119,14 @@
             android:fontFamily="?attr/font_family"
             tools:visibility="visible" />
 
-        <ml.docilealligator.infinityforreddit.customviews.SpoilerOnClickTextView
+        <androidx.recyclerview.widget.RecyclerView
             android:id="@+id/comment_markdown_view_item_post_comment"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_margin="8dp"
-            android:paddingStart="8dp"
-            android:paddingEnd="8dp"
-            android:textColor="?attr/primaryTextColor"
-            android:textSize="?attr/content_font_default"
-            android:fontFamily="?attr/content_font_family" />
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_marginTop="8dp"
+            android:layout_marginStart="8dp"
+            android:layout_marginEnd="8dp"
+            android:nestedScrollingEnabled="false" />
 
         <androidx.constraintlayout.widget.ConstraintLayout
             android:id="@+id/bottom_constraint_layout_item_post_comment"
-- 
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