correctly serialize custom spans to html (#2199)

app/src/main/java/com/keylesspalace/tusky/AboutActivity.kt

@@ -11,7 +11,7 @@ import android.text.util.Linkify
 import android.widget.TextView
 import com.keylesspalace.tusky.databinding.ActivityAboutBinding
 import com.keylesspalace.tusky.di.Injectable
-import com.keylesspalace.tusky.util.CustomURLSpan
+import com.keylesspalace.tusky.util.NoUnderlineURLSpan
 import com.keylesspalace.tusky.util.hide
 
 class AboutActivity : BottomSheetActivity(), Injectable {
@@ -63,7 +63,7 @@ private fun TextView.setClickableTextWithoutUnderlines(@StringRes textId: Int) {
         val end = builder.getSpanEnd(span)
         val flags = builder.getSpanFlags(span)
 
-        val customSpan = object : CustomURLSpan(span.url) {}
+        val customSpan = NoUnderlineURLSpan(span.url)
 
         builder.removeSpan(span)
         builder.setSpan(customSpan, start, end, flags)

app/src/main/java/com/keylesspalace/tusky/util/ClickableSpanNoUnderline.kt

@@ -1,11 +0,0 @@
-package com.keylesspalace.tusky.util
-
-import android.text.TextPaint
-import android.text.style.ClickableSpan
-
-abstract class ClickableSpanNoUnderline : ClickableSpan() {
-    override fun updateDrawState(ds: TextPaint) {
-        super.updateDrawState(ds)
-        ds.isUnderlineText = false
-    }
-}

app/src/main/java/com/keylesspalace/tusky/util/CustomURLSpan.java

@@ -1,41 +0,0 @@
-package com.keylesspalace.tusky.util;
-
-import android.os.Parcel;
-import android.os.Parcelable;
-import android.text.TextPaint;
-import android.text.style.URLSpan;
-import android.view.View;
-
-public class CustomURLSpan extends URLSpan {
-    public CustomURLSpan(String url) {
-        super(url);
-    }
-
-    private CustomURLSpan(Parcel src) {
-        super(src);
-    }
-
-    public static final Parcelable.Creator<CustomURLSpan> CREATOR = new Parcelable.Creator<CustomURLSpan>() {
-
-        @Override
-        public CustomURLSpan createFromParcel(Parcel source) {
-            return new CustomURLSpan(source);
-        }
-
-        @Override
-        public CustomURLSpan[] newArray(int size) {
-            return new CustomURLSpan[size];
-        }
-
-    };
-
-    @Override
-    public void onClick(View view) {
-        LinkHelper.openLink(getURL(), view.getContext());
-    }
-
-    @Override public void updateDrawState(TextPaint ds) {
-        super.updateDrawState(ds);
-        ds.setUnderlineText(false);
-    }
-}

app/src/main/java/com/keylesspalace/tusky/util/LinkHelper.java

@@ -82,7 +82,7 @@ public class LinkHelper {
 
             if (text.charAt(0) == '#') {
                 final String tag = text.subSequence(1, text.length()).toString();
-                customSpan = new ClickableSpanNoUnderline() {
+                customSpan = new NoUnderlineURLSpan(span.getURL()) {
                     @Override
                     public void onClick(@NonNull View widget) { listener.onViewTag(tag); }
                 };
@@ -102,7 +102,7 @@ public class LinkHelper {
                 }
                 if (id != null) {
                     final String accountId = id;
-                    customSpan = new ClickableSpanNoUnderline() {
+                    customSpan = new NoUnderlineURLSpan(span.getURL()) {
                         @Override
                         public void onClick(@NonNull View widget) { listener.onViewAccount(accountId); }
                     };
@@ -110,9 +110,9 @@ public class LinkHelper {
             }
 
             if (customSpan == null) {
-                customSpan = new CustomURLSpan(span.getURL()) {
+                customSpan = new NoUnderlineURLSpan(span.getURL()) {
                     @Override
-                    public void onClick(View widget) {
+                    public void onClick(@NonNull View widget) {
                         listener.onViewUrl(getURL());
                     }
                 };
@@ -155,7 +155,7 @@ public class LinkHelper {
         for (Status.Mention mention : mentions) {
             String accountUsername = mention.getLocalUsername();
             final String accountId = mention.getId();
-            ClickableSpan customSpan = new ClickableSpanNoUnderline() {
+            ClickableSpan customSpan = new NoUnderlineURLSpan(mention.getUrl()) {
                 @Override
                 public void onClick(@NonNull View widget) { listener.onViewAccount(accountId); }
             };
@@ -181,7 +181,7 @@ public class LinkHelper {
     }
 
     public static CharSequence createClickableText(String text, String link) {
-        URLSpan span = new CustomURLSpan(link);
+        URLSpan span = new NoUnderlineURLSpan(link);
 
         SpannableStringBuilder clickableText = new SpannableStringBuilder(text);
         clickableText.setSpan(span, 0, text.length(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE);

app/src/main/java/com/keylesspalace/tusky/util/NoUnderlineURLSpan.kt

@@ -0,0 +1,34 @@
+/* Copyright 2021 Tusky Contributors
+ *
+ * This file is a part of Tusky.
+ *
+ * This program is free software; you can redistribute it and/or modify it under the terms of the
+ * GNU General Public License as published by the Free Software Foundation; either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * Tusky is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
+ * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+ * Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with Tusky; if not,
+ * see <http://www.gnu.org/licenses>. */
+
+package com.keylesspalace.tusky.util
+
+import android.text.TextPaint
+import android.text.style.URLSpan
+import android.view.View
+
+open class NoUnderlineURLSpan(
+    url: String
+) : URLSpan(url) {
+
+    override fun updateDrawState(ds: TextPaint) {
+        super.updateDrawState(ds)
+        ds.isUnderlineText = false
+    }
+
+    override fun onClick(view: View) {
+        LinkHelper.openLink(url, view.context)
+    }
+}

app/src/main/java/com/keylesspalace/tusky/util/SpanUtils.kt

@@ -117,8 +117,8 @@ private fun findEndOfPattern(string: String, result: FindCharsResult, pattern: P
 
 private fun getSpan(matchType: FoundMatchType, string: String, colour: Int, start: Int, end: Int): CharacterStyle {
     return when(matchType) {
-        FoundMatchType.HTTP_URL -> CustomURLSpan(string.substring(start, end))
-        FoundMatchType.HTTPS_URL -> CustomURLSpan(string.substring(start, end))
+        FoundMatchType.HTTP_URL -> NoUnderlineURLSpan(string.substring(start, end))
+        FoundMatchType.HTTPS_URL -> NoUnderlineURLSpan(string.substring(start, end))
         else -> ForegroundColorSpan(colour)
     }
 }