From 4870d2bee64e454faf0f6a43269d0e00aaba52e7 Mon Sep 17 00:00:00 2001
From: Alex Ning <chineseperson5@gmail.com>
Date: Mon, 14 Sep 2020 10:34:11 +0800
Subject: Fix spoiler background color that cannot hide spoiler. Support
 spoiler in MessageRecyclerViewAdapter.

---
 .../Activity/CommentFullMarkdownActivity.java      |  3 +-
 .../Adapter/CommentAndPostRecyclerViewAdapter.java |  8 +-
 .../CommentsListingRecyclerViewAdapter.java        |  3 +-
 .../Adapter/MessageRecyclerViewAdapter.java        | 90 +++++++++++++++++++---
 4 files changed, 89 insertions(+), 15 deletions(-)

diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/Activity/CommentFullMarkdownActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/Activity/CommentFullMarkdownActivity.java
index 1dde280f..0cf15283 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/Activity/CommentFullMarkdownActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/Activity/CommentFullMarkdownActivity.java
@@ -114,6 +114,7 @@ public class CommentFullMarkdownActivity extends BaseActivity {
         String commentMarkdown = getIntent().getStringExtra(EXTRA_COMMENT_MARKDOWN);
         boolean isNsfw = getIntent().getBooleanExtra(EXTRA_IS_NSFW, false);
         int markdownColor = mCustomThemeWrapper.getCommentColor();
+        int spoilerBackgroundColor = markdownColor | 0xFF000000;
         int linkColor = mCustomThemeWrapper.getLinkColor();
         Markwon markwon = Markwon.builder(this)
                 .usePlugin(new AbstractMarkwonPlugin() {
@@ -149,7 +150,7 @@ public class CommentFullMarkdownActivity extends BaseActivity {
                                         super.updateDrawState(ds);
                                         ds.setColor(markdownColor);
                                     } else {
-                                        ds.bgColor = markdownColor;
+                                        ds.bgColor = spoilerBackgroundColor;
                                         ds.setColor(markdownColor);
                                     }
                                     ds.setUnderlineText(false);
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/Adapter/CommentAndPostRecyclerViewAdapter.java b/app/src/main/java/ml/docilealligator/infinityforreddit/Adapter/CommentAndPostRecyclerViewAdapter.java
index fec7839a..9298c0b2 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/Adapter/CommentAndPostRecyclerViewAdapter.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/Adapter/CommentAndPostRecyclerViewAdapter.java
@@ -250,7 +250,9 @@ public class CommentAndPostRecyclerViewAdapter extends RecyclerView.Adapter<Recy
         mGlide = glide;
         mSecondaryTextColor = customThemeWrapper.getSecondaryTextColor();
         mCommentTextColor = customThemeWrapper.getCommentColor();
+        int commentSpoilerBackgroundColor = mCommentTextColor | 0xFF000000;
         int markdownColor = customThemeWrapper.getPostContentColor();
+        int postSpoilerBackgroundColor = markdownColor | 0xFF000000;
         int linkColor = customThemeWrapper.getLinkColor();
         mPostDetailMarkwon = Markwon.builder(mActivity)
                 .usePlugin(new AbstractMarkwonPlugin() {
@@ -286,7 +288,7 @@ public class CommentAndPostRecyclerViewAdapter extends RecyclerView.Adapter<Recy
                                         super.updateDrawState(ds);
                                         ds.setColor(markdownColor);
                                     } else {
-                                        ds.bgColor = markdownColor;
+                                        ds.bgColor = postSpoilerBackgroundColor;
                                         ds.setColor(markdownColor);
                                     }
                                     ds.setUnderlineText(false);
@@ -382,7 +384,7 @@ public class CommentAndPostRecyclerViewAdapter extends RecyclerView.Adapter<Recy
                                         super.updateDrawState(ds);
                                         ds.setColor(mCommentTextColor);
                                     } else {
-                                        ds.bgColor = mCommentTextColor;
+                                        ds.bgColor = commentSpoilerBackgroundColor;
                                         ds.setColor(mCommentTextColor);
                                     }
                                     ds.setUnderlineText(false);
@@ -3657,7 +3659,7 @@ public class CommentAndPostRecyclerViewAdapter extends RecyclerView.Adapter<Recy
                     ((ViewPostDetailActivity) mActivity).changeToSingleThreadMode();
                 }
 
-                itemView.setBackgroundColor(mCommentBackgroundColor);
+                itemView.setBackgroundColor(mColorAccent);
                 ((TextView) itemView).setTextColor(mColorAccent);
             });
         }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/Adapter/CommentsListingRecyclerViewAdapter.java b/app/src/main/java/ml/docilealligator/infinityforreddit/Adapter/CommentsListingRecyclerViewAdapter.java
index ccfc2a88..eb37f28a 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/Adapter/CommentsListingRecyclerViewAdapter.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/Adapter/CommentsListingRecyclerViewAdapter.java
@@ -111,6 +111,7 @@ public class CommentsListingRecyclerViewAdapter extends PagedListAdapter<Comment
         mContext = context;
         mOauthRetrofit = oauthRetrofit;
         mCommentColor = customThemeWrapper.getCommentColor();
+        int commentSpoilerBackgroundColor = mCommentColor | 0xFF000000;
         mMarkwon = Markwon.builder(mContext)
                 .usePlugin(new AbstractMarkwonPlugin() {
                     @NonNull
@@ -147,7 +148,7 @@ public class CommentsListingRecyclerViewAdapter extends PagedListAdapter<Comment
                                         super.updateDrawState(ds);
                                         ds.setColor(mCommentColor);
                                     } else {
-                                        ds.bgColor = mCommentColor;
+                                        ds.bgColor = commentSpoilerBackgroundColor;
                                         ds.setColor(mCommentColor);
                                     }
                                     ds.setUnderlineText(false);
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/Adapter/MessageRecyclerViewAdapter.java b/app/src/main/java/ml/docilealligator/infinityforreddit/Adapter/MessageRecyclerViewAdapter.java
index d088a938..58604abd 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/Adapter/MessageRecyclerViewAdapter.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/Adapter/MessageRecyclerViewAdapter.java
@@ -3,7 +3,13 @@ package ml.docilealligator.infinityforreddit.Adapter;
 import android.content.Context;
 import android.content.Intent;
 import android.content.res.ColorStateList;
+import android.graphics.Color;
 import android.net.Uri;
+import android.text.SpannableStringBuilder;
+import android.text.Spanned;
+import android.text.TextPaint;
+import android.text.method.LinkMovementMethod;
+import android.text.style.ClickableSpan;
 import android.text.style.SuperscriptSpan;
 import android.text.util.Linkify;
 import android.view.LayoutInflater;
@@ -19,6 +25,8 @@ import androidx.recyclerview.widget.DiffUtil;
 import androidx.recyclerview.widget.RecyclerView;
 
 import java.util.ArrayList;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
 import butterknife.BindView;
 import butterknife.ButterKnife;
@@ -79,8 +87,73 @@ public class MessageRecyclerViewAdapter extends PagedListAdapter<Message, Recycl
         mContext = context;
         mOauthRetrofit = oauthRetrofit;
         mRetryLoadingMoreCallback = retryLoadingMoreCallback;
+
+        mColorAccent = customThemeWrapper.getColorAccent();
+        mMessageBackgroundColor = customThemeWrapper.getCardViewBackgroundColor();
+        mUsernameColor = customThemeWrapper.getUsername();
+        mPrimaryTextColor = customThemeWrapper.getPrimaryTextColor();
+        mSecondaryTextColor = customThemeWrapper.getSecondaryTextColor();
+        int spoilerBackgroundColor = mSecondaryTextColor | 0xFF000000;
+        mUnreadMessageBackgroundColor = customThemeWrapper.getUnreadMessageBackgroundColor();
+        mColorPrimaryLightTheme = customThemeWrapper.getColorPrimaryLightTheme();
+        mButtonTextColor = customThemeWrapper.getButtonTextColor();
+
         mMarkwon = Markwon.builder(mContext)
                 .usePlugin(new AbstractMarkwonPlugin() {
+                    @NonNull
+                    @Override
+                    public String processMarkdown(@NonNull String markdown) {
+                        StringBuilder markdownStringBuilder = new StringBuilder(markdown);
+                        Pattern spoilerPattern = Pattern.compile(">![\\S\\s]*?!<");
+                        Matcher matcher = spoilerPattern.matcher(markdownStringBuilder);
+                        while (matcher.find()) {
+                            markdownStringBuilder.replace(matcher.start(), matcher.start() + 1, "&gt;");
+                        }
+                        return super.processMarkdown(markdownStringBuilder.toString());
+                    }
+
+                    @Override
+                    public void afterSetText(@NonNull TextView textView) {
+                        textView.setHighlightColor(Color.TRANSPARENT);
+                        SpannableStringBuilder markdownStringBuilder = new SpannableStringBuilder(textView.getText().toString());
+                        Pattern spoilerPattern = Pattern.compile(">![\\S\\s]*?!<");
+                        Matcher matcher = spoilerPattern.matcher(markdownStringBuilder);
+                        int start = 0;
+                        boolean find = false;
+                        while (matcher.find(start)) {
+                            find = true;
+                            markdownStringBuilder.delete(matcher.end() - 2, matcher.end());
+                            markdownStringBuilder.delete(matcher.start(), matcher.start() + 2);
+                            int matcherStart = matcher.start();
+                            int matcherEnd = matcher.end();
+                            ClickableSpan clickableSpan = new ClickableSpan() {
+                                private boolean isShowing = false;
+                                @Override
+                                public void updateDrawState(@NonNull TextPaint ds) {
+                                    if (isShowing) {
+                                        super.updateDrawState(ds);
+                                        ds.setColor(mSecondaryTextColor);
+                                    } else {
+                                        ds.bgColor = spoilerBackgroundColor;
+                                        ds.setColor(mSecondaryTextColor);
+                                    }
+                                    ds.setUnderlineText(false);
+                                }
+
+                                @Override
+                                public void onClick(@NonNull View view) {
+                                    isShowing = !isShowing;
+                                    view.invalidate();
+                                }
+                            };
+                            markdownStringBuilder.setSpan(clickableSpan, matcherStart, matcherEnd - 4, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
+                            start = matcherEnd - 4;
+                        }
+                        if (find) {
+                            textView.setText(markdownStringBuilder);
+                        }
+                    }
+
                     @Override
                     public void configureConfiguration(@NonNull MarkwonConfiguration.Builder builder) {
                         builder.linkResolver((view, link) -> {
@@ -115,15 +188,6 @@ public class MessageRecyclerViewAdapter extends PagedListAdapter<Message, Recycl
         } else {
             mMessageType = FetchMessage.MESSAGE_TYPE_INBOX;
         }
-
-        mColorAccent = customThemeWrapper.getColorAccent();
-        mMessageBackgroundColor = customThemeWrapper.getCardViewBackgroundColor();
-        mUsernameColor = customThemeWrapper.getUsername();
-        mPrimaryTextColor = customThemeWrapper.getPrimaryTextColor();
-        mSecondaryTextColor = customThemeWrapper.getSecondaryTextColor();
-        mUnreadMessageBackgroundColor = customThemeWrapper.getUnreadMessageBackgroundColor();
-        mColorPrimaryLightTheme = customThemeWrapper.getColorPrimaryLightTheme();
-        mButtonTextColor = customThemeWrapper.getButtonTextColor();
     }
 
     @NonNull
@@ -205,7 +269,11 @@ public class MessageRecyclerViewAdapter extends PagedListAdapter<Message, Recycl
                     mContext.startActivity(intent);
                 });
 
-                ((DataViewHolder) holder).contentCustomMarkwonView.setOnClickListener(view -> ((DataViewHolder) holder).itemView.performClick());
+                ((DataViewHolder) holder).contentCustomMarkwonView.setOnClickListener(view -> {
+                    if (((DataViewHolder) holder).contentCustomMarkwonView.getSelectionStart() == -1 && ((DataViewHolder) holder).contentCustomMarkwonView.getSelectionEnd() == -1) {
+                        ((DataViewHolder) holder).itemView.performClick();
+                    }
+                });
             }
         }
     }
@@ -293,6 +361,8 @@ public class MessageRecyclerViewAdapter extends PagedListAdapter<Message, Recycl
             subjectTextView.setTextColor(mPrimaryTextColor);
             titleTextView.setTextColor(mPrimaryTextColor);
             contentCustomMarkwonView.setTextColor(mSecondaryTextColor);
+
+            contentCustomMarkwonView.setMovementMethod(LinkMovementMethod.getInstance());
         }
     }
 
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