#1219 - highlight bottom hashtags

app/src/main/java/app/fedilab/android/mastodon/client/entities/api/Status.java

@@ -16,6 +16,7 @@ package app.fedilab.android.mastodon.client.entities.api;
 
 import android.content.Context;
 import android.text.Spannable;
+import android.util.Log;
 import android.view.View;
 
 import androidx.annotation.NonNull;
@@ -28,6 +29,7 @@ import java.lang.ref.WeakReference;
 import java.util.Date;
 import java.util.List;
 
+import app.fedilab.android.mastodon.helper.Helper;
 import app.fedilab.android.mastodon.helper.SpannableHelper;
 import de.timfreiheit.mathjax.android.MathJaxView;
 
@@ -139,6 +141,8 @@ public class Status implements Serializable, Cloneable {
     public boolean spoilerChecked = false;
     public Filter filteredByApp;
     public transient Spannable contentSpan;
+
+    public transient String[] bottomTags;
     public transient Spannable contentSpoilerSpan;
     public transient Spannable contentTranslateSpan;
     public transient MathJaxView mathJaxView;
@@ -162,6 +166,13 @@ public class Status implements Serializable, Cloneable {
         return contentSpan;
     }
 
+    public synchronized String[] getBottomTags() {
+        if(bottomTags == null) {
+            bottomTags = SpannableHelper.hasBottomTags(content);
+        }
+        return bottomTags;
+    }
+
     public synchronized Spannable getSpanSpoiler(Context context, WeakReference<View> viewWeakReference, Callback callback) {
         if (contentSpoilerSpan == null) {
             contentSpoilerSpan = SpannableHelper.convert(context, spoiler_text, this, null, null, viewWeakReference, callback, true, false);

app/src/main/java/app/fedilab/android/mastodon/helper/SpannableHelper.java

@@ -37,6 +37,7 @@ import android.text.TextPaint;
 import android.text.style.ClickableSpan;
 import android.text.style.QuoteSpan;
 import android.text.style.URLSpan;
+import android.util.Log;
 import android.util.Patterns;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -107,6 +108,28 @@ public class SpannableHelper {
     private static int linkColor;
     private static boolean underlineLinks;
 
+    private static final String patternBottomTags = "\\n{2,}((#[\\w_À-ú-]+)\\s?)+$";
+
+    public static String[] hasBottomTags(String text) {
+        if (text == null) {
+            return new String[]{};
+        }
+        SpannableString initialContent;
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+            initialContent = new SpannableString(Html.fromHtml(text, Html.FROM_HTML_MODE_LEGACY));
+        } else {
+            initialContent = new SpannableString(Html.fromHtml(text));
+        }
+        final Pattern bottomTagsPattern = Pattern.compile(patternBottomTags, Pattern.CASE_INSENSITIVE);
+        Matcher matcherBottomTags = bottomTagsPattern.matcher(initialContent);
+        String[] tags = new String[]{};
+        while (matcherBottomTags.find()) {
+            String stringTags = Objects.requireNonNull(matcherBottomTags.group()).trim();
+            tags = stringTags.split("\\s");
+        }
+        return tags;
+    }
+
     public static Spannable convert(Context context, String text,
                                     Status status, Account account, Announcement announcement,
                                     WeakReference<View> viewWeakReference, Status.Callback callback, boolean convertHtml, boolean convertMarkdown) {
@@ -162,6 +185,7 @@ public class SpannableHelper {
         } else {
             initialContent = new SpannableString(text);
         }
+
         boolean markdownSupport = sharedpreferences.getBoolean(context.getString(R.string.SET_MARKDOWN_SUPPORT), false);
         //Get all links
         SpannableStringBuilder content;
@@ -393,6 +417,20 @@ public class SpannableHelper {
                 }
             }
 
+        }
+
+        boolean underlineBottomHashTags = sharedpreferences.getBoolean(context.getString(R.string.SET_UNDERLINE_BOTTOM_HASHTAGS), true);
+        if(underlineBottomHashTags) {
+            SpannableStringBuilder spannableStringBuilder = new SpannableStringBuilder();
+            final Pattern bottomTagsPattern = Pattern.compile(patternBottomTags, Pattern.CASE_INSENSITIVE);
+            Matcher matcherBottomTags = bottomTagsPattern.matcher(content);
+            int length = 0;
+            while (matcherBottomTags.find()) {
+                length = Objects.requireNonNull(matcherBottomTags.group()).length();
+            }
+            spannableStringBuilder.append(content,0, content.length()-length);
+            return trimSpannable(spannableStringBuilder);
+
         }
         return trimSpannable(new SpannableStringBuilder(content));
     }

app/src/main/java/app/fedilab/android/mastodon/ui/drawer/StatusAdapter.java

@@ -108,6 +108,7 @@ import com.bumptech.glide.ListPreloader;
 import com.bumptech.glide.RequestBuilder;
 import com.bumptech.glide.request.RequestOptions;
 import com.github.stom79.mytransl.MyTransL;
+import com.google.android.material.chip.Chip;
 import com.google.android.material.dialog.MaterialAlertDialogBuilder;
 import com.smarteist.autoimageslider.SliderAnimations;
 import com.smarteist.autoimageslider.SliderView;
@@ -143,6 +144,7 @@ import app.fedilab.android.databinding.LayoutPollItemBinding;
 import app.fedilab.android.mastodon.activities.ComposeActivity;
 import app.fedilab.android.mastodon.activities.ContextActivity;
 import app.fedilab.android.mastodon.activities.CustomSharingActivity;
+import app.fedilab.android.mastodon.activities.HashTagActivity;
 import app.fedilab.android.mastodon.activities.MediaActivity;
 import app.fedilab.android.mastodon.activities.ProfileActivity;
 import app.fedilab.android.mastodon.activities.ReportActivity;
@@ -508,6 +510,9 @@ public class StatusAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder>
             LinearLayoutCompat.MarginLayoutParams psc = (LinearLayoutCompat.MarginLayoutParams) holder.binding.statusContent.getLayoutParams();
             psc.setMarginStart((int) Helper.convertDpToPixel(6, context));
             holder.binding.statusContent.setLayoutParams(psc);
+            LinearLayoutCompat.MarginLayoutParams pst = (LinearLayoutCompat.MarginLayoutParams) holder.binding.statusHashtags.getLayoutParams();
+            pst.setMarginStart((int) Helper.convertDpToPixel(6, context));
+            holder.binding.statusHashtags.setLayoutParams(pst);
             LinearLayoutCompat.MarginLayoutParams psq = (LinearLayoutCompat.MarginLayoutParams) holder.binding.quotedMessage.cardviewContainer.getLayoutParams();
             psq.setMarginStart((int) Helper.convertDpToPixel(6, context));
             holder.binding.quotedMessage.cardviewContainer.setLayoutParams(psq);
@@ -1510,6 +1515,37 @@ public class StatusAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder>
                             recyclerView.post(() -> adapter.notifyItemChanged(holder.getBindingAdapterPosition()));
                         }),
                 TextView.BufferType.SPANNABLE);
+        boolean underlineBottomHashTags = sharedpreferences.getBoolean(context.getString(R.string.SET_UNDERLINE_BOTTOM_HASHTAGS), true);
+        if(underlineBottomHashTags) {
+            if (statusToDeal.getBottomTags().length > 0) {
+                holder.binding.statusHashtags.setVisibility(View.VISIBLE);
+                holder.binding.statusHashtags.removeAllViews();
+                for (String tag : statusToDeal.getBottomTags()) {
+                    Chip chip = new Chip(context);
+                    chip.setClickable(true);
+                    chip.setEnsureMinTouchTargetSize(false);
+                    chip.setText(tag);
+                    chip.setTextColor(ThemeHelper.getAttColor(context, R.attr.colorPrimary));
+                    chip.setOnClickListener(v -> {
+                        Intent intentTag = new Intent(context, HashTagActivity.class);
+                        Bundle args = new Bundle();
+                        args.putString(Helper.ARG_SEARCH_KEYWORD, tag.replace("#", ""));
+                        new CachedBundle(context).insertBundle(args, Helper.getCurrentAccount(context), bundleId -> {
+                            Bundle bundle = new Bundle();
+                            bundle.putLong(Helper.ARG_INTENT_ID, bundleId);
+                            intentTag.putExtras(bundle);
+                            intentTag.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+                            context.startActivity(intentTag);
+                        });
+                    });
+                    holder.binding.statusHashtags.addView(chip);
+                }
+            } else {
+                holder.binding.statusHashtags.setVisibility(View.GONE);
+            }
+        } else {
+            holder.binding.statusHashtags.setVisibility(View.GONE);
+        }
         if (truncate_toots_size > 0) {
             holder.binding.statusContent.setMaxLines(truncate_toots_size);
             holder.binding.statusContent.setEllipsize(TextUtils.TruncateAt.END);

app/src/main/res/layouts/mastodon/layout/drawer_status.xml

@@ -281,6 +281,18 @@
             tools:maxLines="10"
             tools:text="@tools:sample/lorem/random" />
 
+        <com.google.android.material.chip.ChipGroup
+            android:id="@+id/status_hashtags"
+            android:visibility="gone"
+            tools:visibility="visible"
+            android:layout_marginStart="48dp"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="12dp"
+            app:chipSpacingHorizontal="6dp"
+            app:chipSpacingVertical="6dp"
+            app:layout_constraintTop_toBottomOf="@id/description"/>
+
         <androidx.core.widget.NestedScrollView
             android:id="@+id/status_content_maths"
             android:layout_width="match_parent"

app/src/main/res/values/strings.xml

@@ -1265,6 +1265,7 @@
     <string name="SET_TIMELINE_SCROLLBAR" translatable="false">SET_TIMELINE_SCROLLBAR</string>
     <string name="SET_MARKDOWN_SUPPORT" translatable="false">SET_MARKDOWN_SUPPORT</string>
     <string name="SET_TRUNCATE_LINKS" translatable="false">SET_TRUNCATE_LINKS</string>
+    <string name="SET_UNDERLINE_BOTTOM_HASHTAGS" translatable="false">SET_UNDERLINE_BOTTOM_HASHTAGS</string>
     <string name="SET_UNDERLINE_CLICKABLE" translatable="false">SET_UNDERLINE_CLICKABLE</string>
     <string name="SET_PRONOUNS_SUPPORT" translatable="false">SET_PRONOUNS_SUPPORT</string>
     <string name="SET_TRUNCATE_LINKS_MAX" translatable="false">SET_TRUNCATE_LINKS_MAX</string>
@@ -2081,6 +2082,7 @@
     <string name="toot_error_no_media_description">There are missing media descriptions</string>
 
     <string name="truncate_links">Truncate links</string>
+    <string name="underline_bottom_hashtags">Highlight bottom hashtags</string>
     <string name="underline_links">Underline clickable elements</string>
     <string name="truncate_links_max">Max chars in links</string>
 

app/src/main/res/xml/pref_timelines.xml

@@ -72,6 +72,14 @@
         app:singleLineTitle="false"
         app:title="@string/truncate_links" />
 
+
+    <SwitchPreferenceCompat
+        android:defaultValue="true"
+        app:iconSpaceReserved="false"
+        app:key="@string/SET_UNDERLINE_BOTTOM_HASHTAGS"
+        app:singleLineTitle="false"
+        app:title="@string/underline_bottom_hashtags" />
+
     <SwitchPreferenceCompat
         android:defaultValue="false"
         app:iconSpaceReserved="false"