Improved comments

app/src/main/java/eu/kanade/tachiyomi/ui/manga/info/MangaInfoFragment.java

@@ -21,82 +21,163 @@ import eu.kanade.tachiyomi.data.source.base.Source;
 import eu.kanade.tachiyomi.ui.base.fragment.BaseRxFragment;
 import nucleus.factory.RequiresPresenter;
 
+/**
+ * Fragment that shows manga information.
+ * Uses R.layout.fragment_manga_info.
+ * UI related actions should be called from here.
+ */
 @RequiresPresenter(MangaInfoPresenter.class)
 public class MangaInfoFragment extends BaseRxFragment<MangaInfoPresenter> {
+    /**
+     * SwipeRefreshLayout showing refresh status
+     */
     @Bind(R.id.swipe_refresh) SwipeRefreshLayout swipeRefresh;
+
+    /**
+     * TextView containing artist information.
+     */
     @Bind(R.id.manga_artist) TextView artist;
+
+    /**
+     * TextView containing author information.
+     */
     @Bind(R.id.manga_author) TextView author;
+
+    /**
+     * TextView containing chapter count.
+     */
     @Bind(R.id.manga_chapters) TextView chapterCount;
+
+    /**
+     * TextView containing genres.
+     */
     @Bind(R.id.manga_genres) TextView genres;
+
+    /**
+     * TextView containing status (ongoing, finished).
+     */
     @Bind(R.id.manga_status) TextView status;
+
+    /**
+     * TextView containing source.
+     */
     @Bind(R.id.manga_source) TextView source;
+
+    /**
+     * TextView containing manga summary.
+     */
     @Bind(R.id.manga_summary) TextView description;
+
+    /**
+     * ImageView of cover.
+     */
     @Bind(R.id.manga_cover) ImageView cover;
+
+    /**
+     * ImageView containing manga cover shown as blurred backdrop.
+     */
     @Bind(R.id.backdrop) ImageView backdrop;
+
+    /**
+     * FAB anchored to bottom of top view used to (add / remove) manga (to / from) library.
+     */
     @Bind(R.id.fab_favorite) FloatingActionButton fabFavorite;
 
+    /**
+     * Create new instance of MangaInfoFragment.
+     *
+     * @return MangaInfoFragment.
+     */
     public static MangaInfoFragment newInstance() {
         return new MangaInfoFragment();
     }
 
-    @Override
-    public void onCreate(Bundle savedState) {
-        super.onCreate(savedState);
-        setHasOptionsMenu(true);
-    }
-
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
                              Bundle savedInstanceState) {
-        // Inflate the layout for this fragment
+        // Inflate the layout for this fragment.
         View view = inflater.inflate(R.layout.fragment_manga_info, container, false);
+
+        // Bind layout objects.
         ButterKnife.bind(this, view);
 
+        // Set onclickListener to toggle favorite when FAB clicked.
         fabFavorite.setOnClickListener(v -> getPresenter().toggleFavorite());
 
+        // Set SwipeRefresh to refresh manga data.
         swipeRefresh.setOnRefreshListener(this::fetchMangaFromSource);
 
         return view;
     }
 
+    /**
+     * Check if manga is initialized.
+     * If true update view with manga information,
+     * if false fetch manga information
+     *
+     * @param manga  manga object containing information about manga.
+     * @param source the source of the manga.
+     */
     public void onNextManga(Manga manga, Source source) {
         if (manga.initialized) {
+            // Update view.
             setMangaInfo(manga, source);
         } else {
-            // Initialize manga
+            // Initialize manga.
             fetchMangaFromSource();
         }
     }
 
     /**
-     * Set the info of the manga
+     * Update the view with manga information.
      *
-     * @param manga       manga object containing information about manga
+     * @param manga       manga object containing information about manga.
-     * @param mangaSource the source of the manga
+     * @param mangaSource the source of the manga.
      */
     private void setMangaInfo(Manga manga, Source mangaSource) {
+        // Update artist TextView.
         artist.setText(manga.artist);
+
+        // Update author TextView.
         author.setText(manga.author);
 
+        // If manga source is known update source TextView.
         if (mangaSource != null) {
             source.setText(mangaSource.getName());
         }
+
+        // Update genres TextView.
         genres.setText(manga.genre);
+
+        // Update status TextView.
         status.setText(manga.getStatus(getActivity()));
+
+        // Update description TextView.
         description.setText(manga.description);
 
+        // Set the favorite drawable to the correct one.
         setFavoriteDrawable(manga.favorite);
 
+        // Initialize CoverCache and Glide headers to retrieve cover information.
         CoverCache coverCache = getPresenter().coverCache;
         LazyHeaders headers = getPresenter().source.getGlideHeaders();
-        if (manga.thumbnail_url != null && cover.getDrawable() == null) {
+
+        // Check if thumbnail_url is given.
+        if (manga.thumbnail_url != null) {
+            // Check if cover is already drawn.
+            if (cover.getDrawable() == null) {
+                // If manga is in library then (download / save) (from / to) local cache if available,
+                // else download from network.
                 if (manga.favorite) {
                     coverCache.saveOrLoadFromCache(cover, manga.thumbnail_url, headers);
                 } else {
                     coverCache.loadFromNetwork(cover, manga.thumbnail_url, headers);
                 }
             }
-        if (manga.thumbnail_url != null && backdrop.getDrawable() == null) {
+            // Check if backdrop is already drawn.
+            if (backdrop.getDrawable() == null) {
+                // If manga is in library then (download / save) (from / to) local cache if available,
+                // else download from network.
                 if (manga.favorite) {
                     coverCache.saveOrLoadFromCache(backdrop, manga.thumbnail_url, headers);
                 } else {
@@ -104,31 +185,59 @@ public class MangaInfoFragment extends BaseRxFragment<MangaInfoPresenter> {
                 }
             }
         }
+    }
 
+    /**
+     * Update chapter count TextView.
+     *
+     * @param count number of chapters.
+     */
     public void setChapterCount(int count) {
         chapterCount.setText(String.valueOf(count));
     }
 
+    /**
+     * Update FAB with correct drawable.
+     *
+     * @param isFavorite determines if manga is favorite or not.
+     */
     private void setFavoriteDrawable(boolean isFavorite) {
+        // Set the Favorite drawable to the correct one.
+        // Border drawable if false, filled drawable if true.
         fabFavorite.setImageDrawable(ContextCompat.getDrawable(getContext(), isFavorite ?
                 R.drawable.ic_bookmark_white_24dp :
                 R.drawable.ic_bookmark_border_white_24dp));
     }
 
+    /**
+     * Start fetching manga information from source.
+     */
     private void fetchMangaFromSource() {
         setRefreshing(true);
+        // Call presenter and start fetching manga information
         getPresenter().fetchMangaFromSource();
     }
 
 
+    /**
+     * Update swipeRefresh to stop showing refresh in progress spinner.
+     */
     public void onFetchMangaDone() {
         setRefreshing(false);
     }
 
+    /**
+     * Update swipeRefresh to start showing refresh in progress spinner.
+     */
     public void onFetchMangaError() {
         setRefreshing(false);
     }
 
+    /**
+     * Set swipeRefresh status.
+     *
+     * @param value status of manga fetch.
+     */
     private void setRefreshing(boolean value) {
         swipeRefresh.setRefreshing(value);
     }

app/src/main/java/eu/kanade/tachiyomi/ui/manga/info/MangaInfoPresenter.java

@@ -19,42 +19,55 @@ import rx.Observable;
 import rx.android.schedulers.AndroidSchedulers;
 import rx.schedulers.Schedulers;
 
+/**
+ * Presenter of MangaInfoFragment.
+ * Contains information and data for fragment.
+ * Observable updates should be called from here.
+ */
 public class MangaInfoPresenter extends BasePresenter<MangaInfoFragment> {
 
     /**
      * The id of the restartable.
      */
     private static final int GET_MANGA = 1;
+
     /**
      * The id of the restartable.
      */
     private static final int GET_CHAPTER_COUNT = 2;
+
     /**
      * The id of the restartable.
      */
     private static final int FETCH_MANGA_INFO = 3;
+
     /**
-     * Source information
+     * Source information.
      */
     protected Source source;
+
     /**
-     * Used to connect to database
+     * Used to connect to database.
      */
     @Inject DatabaseHelper db;
+
     /**
-     * Used to connect to different manga sources
+     * Used to connect to different manga sources.
      */
     @Inject SourceManager sourceManager;
+
     /**
-     * Used to connect to cache
+     * Used to connect to cache.
      */
     @Inject CoverCache coverCache;
+
     /**
-     * Selected manga information
+     * Selected manga information.
      */
     private Manga manga;
+
     /**
-     * Count of chapters
+     * Count of chapters.
      */
     private int count = -1;
 
@@ -62,23 +75,23 @@ public class MangaInfoPresenter extends BasePresenter<MangaInfoFragment> {
     protected void onCreate(Bundle savedState) {
         super.onCreate(savedState);
 
-        // Notify the view a manga is available or has changed
+        // Notify the view a manga is available or has changed.
         startableLatestCache(GET_MANGA,
                 () -> Observable.just(manga),
                 (view, manga) -> view.onNextManga(manga, source));
 
-        // Update chapter count
+        // Update chapter count.
         startableLatestCache(GET_CHAPTER_COUNT,
                 () -> Observable.just(count),
                 MangaInfoFragment::setChapterCount);
 
-        // Fetch manga info from source
+        // Fetch manga info from source.
         startableFirst(FETCH_MANGA_INFO,
                 this::fetchMangaObs,
                 (view, manga) -> view.onFetchMangaDone(),
                 (view, error) -> view.onFetchMangaError());
 
-        // Listen for events
+        // Listen for events.
         registerForEvents();
     }
 
@@ -99,12 +112,13 @@ public class MangaInfoPresenter extends BasePresenter<MangaInfoFragment> {
     public void onEvent(ChapterCountEvent event) {
         if (count != event.getCount()) {
             count = event.getCount();
+            // Update chapter count
             start(GET_CHAPTER_COUNT);
         }
     }
 
     /**
-     * Fetch manga info from source
+     * Fetch manga information from source.
      */
     public void fetchMangaFromSource() {
         if (isUnsubscribed(FETCH_MANGA_INFO)) {
@@ -112,6 +126,11 @@ public class MangaInfoPresenter extends BasePresenter<MangaInfoFragment> {
         }
     }
 
+    /**
+     * Fetch manga information from source.
+     *
+     * @return manga information.
+     */
     private Observable<Manga> fetchMangaObs() {
         return source.pullMangaFromNetwork(manga.url)
                 .flatMap(networkManga -> {
@@ -124,6 +143,9 @@ public class MangaInfoPresenter extends BasePresenter<MangaInfoFragment> {
                 .doOnNext(manga -> refreshManga());
     }
 
+    /**
+     * Update favorite status of manga, (removes / adds) manga (to / from) library.
+     */
     public void toggleFavorite() {
         manga.favorite = !manga.favorite;
         onMangaFavoriteChange(manga.favorite);
@@ -132,7 +154,11 @@ public class MangaInfoPresenter extends BasePresenter<MangaInfoFragment> {
     }
 
 
-
+    /**
+     * (Removes / Saves) cover depending on favorite status.
+     *
+     * @param isFavorite determines if manga is favorite or not.
+     */
     private void onMangaFavoriteChange(boolean isFavorite) {
         if (isFavorite) {
             coverCache.save(manga.thumbnail_url, source.getGlideHeaders());
@@ -141,12 +167,10 @@ public class MangaInfoPresenter extends BasePresenter<MangaInfoFragment> {
         }
     }
 
-    public Manga getManga() {
+    /**
-        return manga;
+     * Refresh MangaInfo view.
-    }
+     */
-
+    private void refreshManga() {
-    // Used to refresh the view
-    protected void refreshManga() {
         start(GET_MANGA);
     }