Add minor improvements and retry button to webtoon reader.

app/src/main/java/eu/kanade/mangafeed/ui/reader/viewer/common/PagerReaderFragment.java

@@ -51,7 +51,7 @@ public class PagerReaderFragment extends BaseFragment {
 
     @Override
     public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
-        View view = inflater.inflate(R.layout.fragment_page, container, false);
+        View view = inflater.inflate(R.layout.item_pager_reader, container, false);
         ButterKnife.bind(this, view);
         ReaderActivity activity = (ReaderActivity) getActivity();
 

app/src/main/java/eu/kanade/mangafeed/ui/reader/viewer/webtoon/WebtoonAdapter.java

@@ -4,31 +4,23 @@ import android.support.v7.widget.RecyclerView;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
-import android.view.animation.Animation;
-import android.view.animation.AnimationUtils;
-import android.widget.ProgressBar;
-
-import com.davemorrissey.labs.subscaleview.ImageSource;
-import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView;
 
 import java.util.ArrayList;
 import java.util.List;
 
-import butterknife.Bind;
-import butterknife.ButterKnife;
 import eu.kanade.mangafeed.R;
 import eu.kanade.mangafeed.data.source.model.Page;
 
-public class WebtoonAdapter extends RecyclerView.Adapter<WebtoonAdapter.ImageHolder> {
+public class WebtoonAdapter extends RecyclerView.Adapter<WebtoonHolder> {
 
-    private List<Page> pages;
     private WebtoonReader fragment;
-    private View.OnTouchListener listener;
+    private List<Page> pages;
+    private View.OnTouchListener touchListener;
 
     public WebtoonAdapter(WebtoonReader fragment) {
         this.fragment = fragment;
         pages = new ArrayList<>();
-        listener = (v, event) -> fragment.onImageTouch(event);
+        touchListener = (v, event) -> fragment.onImageTouch(event);
     }
 
     public Page getItem(int position) {
@@ -36,14 +28,14 @@ public class WebtoonAdapter extends RecyclerView.Adapter<WebtoonAdapter.ImageHol
     }
 
     @Override
-    public ImageHolder onCreateViewHolder(ViewGroup parent, int viewType) {
+    public WebtoonHolder onCreateViewHolder(ViewGroup parent, int viewType) {
         LayoutInflater inflater = fragment.getActivity().getLayoutInflater();
         View v = inflater.inflate(R.layout.item_webtoon_reader, parent, false);
-        return new ImageHolder(v, listener);
+        return new WebtoonHolder(v, this, touchListener);
     }
 
     @Override
-    public void onBindViewHolder(ImageHolder holder, int position) {
+    public void onBindViewHolder(WebtoonHolder holder, int position) {
         final Page page = getItem(position);
         holder.onSetValues(page);
     }
@@ -53,9 +45,9 @@ public class WebtoonAdapter extends RecyclerView.Adapter<WebtoonAdapter.ImageHol
         return pages.size();
     }
 
-    public void addPage(Page page) {
+    public void setPages(List<Page> pages) {
-        pages.add(page);
+        this.pages = pages;
-        notifyItemInserted(page.getPageNumber());
+        notifyDataSetChanged();
     }
 
     public void clear() {
@@ -65,41 +57,8 @@ public class WebtoonAdapter extends RecyclerView.Adapter<WebtoonAdapter.ImageHol
         }
     }
 
-    public static class ImageHolder extends RecyclerView.ViewHolder {
+    public void retryPage(Page page) {
-
+        fragment.getReaderActivity().getPresenter().retryPage(page);
-        @Bind(R.id.page_image_view) SubsamplingScaleImageView imageView;
-        @Bind(R.id.progress) ProgressBar progressBar;
-
-        private Animation fadeInAnimation;
-
-        public ImageHolder(View view, View.OnTouchListener listener) {
-            super(view);
-            ButterKnife.bind(this, view);
-
-            fadeInAnimation = AnimationUtils.loadAnimation(view.getContext(), R.anim.fade_in);
-
-            imageView.setParallelLoadingEnabled(true);
-            imageView.setDoubleTapZoomStyle(SubsamplingScaleImageView.ZOOM_FOCUS_FIXED);
-            imageView.setPanLimit(SubsamplingScaleImageView.PAN_LIMIT_INSIDE);
-            imageView.setMinimumScaleType(SubsamplingScaleImageView.SCALE_TYPE_CENTER_INSIDE);
-            imageView.setOnTouchListener(listener);
-            imageView.setOnImageEventListener(new SubsamplingScaleImageView.DefaultOnImageEventListener() {
-                @Override
-                public void onImageLoaded() {
-                    imageView.startAnimation(fadeInAnimation);
-                }
-            });
     }
 
-        public void onSetValues(Page page) {
-            if (page.getImagePath() != null) {
-                imageView.setVisibility(View.VISIBLE);
-                imageView.setImage(ImageSource.uri(page.getImagePath()));
-                progressBar.setVisibility(View.GONE);
-            } else {
-                imageView.setVisibility(View.GONE);
-                progressBar.setVisibility(View.VISIBLE);
-            }
-        }
-    }
 }

app/src/main/java/eu/kanade/mangafeed/ui/reader/viewer/webtoon/WebtoonHolder.java

@@ -0,0 +1,117 @@
+package eu.kanade.mangafeed.ui.reader.viewer.webtoon;
+
+import android.support.v7.widget.RecyclerView;
+import android.view.MotionEvent;
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.animation.Animation;
+import android.view.animation.AnimationUtils;
+import android.widget.Button;
+import android.widget.ProgressBar;
+
+import com.davemorrissey.labs.subscaleview.ImageSource;
+import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView;
+
+import butterknife.Bind;
+import butterknife.ButterKnife;
+import eu.kanade.mangafeed.R;
+import eu.kanade.mangafeed.data.source.model.Page;
+
+public class WebtoonHolder extends RecyclerView.ViewHolder {
+
+    @Bind(R.id.page_image_view) SubsamplingScaleImageView imageView;
+    @Bind(R.id.frame_container) ViewGroup container;
+    @Bind(R.id.progress) ProgressBar progressBar;
+    @Bind(R.id.retry_button) Button retryButton;
+
+    private Animation fadeInAnimation;
+    private Page page;
+
+    public WebtoonHolder(View view, WebtoonAdapter adapter, View.OnTouchListener touchListener) {
+        super(view);
+        ButterKnife.bind(this, view);
+
+        fadeInAnimation = AnimationUtils.loadAnimation(view.getContext(), R.anim.fade_in);
+
+        imageView.setParallelLoadingEnabled(true);
+        imageView.setDoubleTapZoomStyle(SubsamplingScaleImageView.ZOOM_FOCUS_FIXED);
+        imageView.setPanLimit(SubsamplingScaleImageView.PAN_LIMIT_INSIDE);
+        imageView.setMinimumScaleType(SubsamplingScaleImageView.SCALE_TYPE_CENTER_INSIDE);
+        imageView.setOnTouchListener(touchListener);
+        imageView.setOnImageEventListener(new SubsamplingScaleImageView.DefaultOnImageEventListener() {
+            @Override
+            public void onImageLoaded() {
+                imageView.startAnimation(fadeInAnimation);
+            }
+        });
+        progressBar.setMinimumHeight(view.getResources().getDisplayMetrics().heightPixels);
+
+        container.setOnTouchListener(touchListener);
+        retryButton.setOnTouchListener((v, event) -> {
+            if (event.getAction() == MotionEvent.ACTION_UP) {
+                if (page != null)
+                    adapter.retryPage(page);
+                return true;
+            }
+            return true;
+        });
+    }
+
+    public void onSetValues(Page page) {
+        this.page = page;
+        switch (page.getStatus()) {
+            case Page.QUEUE:
+                onQueue();
+                break;
+            case Page.LOAD_PAGE:
+                onLoading();
+                break;
+            case Page.DOWNLOAD_IMAGE:
+                onLoading();
+                break;
+            case Page.READY:
+                onReady();
+                break;
+            case Page.ERROR:
+                onError();
+                break;
+        }
+    }
+
+    private void onLoading() {
+        setErrorButtonVisible(false);
+        setImageVisible(false);
+        setProgressVisible(true);
+    }
+
+    private void onReady() {
+        setErrorButtonVisible(false);
+        setProgressVisible(false);
+        setImageVisible(true);
+        imageView.setImage(ImageSource.uri(page.getImagePath()));
+    }
+
+    private void onError() {
+        setImageVisible(false);
+        setProgressVisible(false);
+        setErrorButtonVisible(true);
+    }
+
+    private void onQueue() {
+        setImageVisible(false);
+        setErrorButtonVisible(false);
+        setProgressVisible(false);
+    }
+
+    private void setProgressVisible(boolean visible) {
+        progressBar.setVisibility(visible ? View.VISIBLE : View.GONE);
+    }
+
+    private void setImageVisible(boolean visible) {
+        imageView.setVisibility(visible ? View.VISIBLE : View.GONE);
+    }
+
+    private void setErrorButtonVisible(boolean visible) {
+        retryButton.setVisibility(visible ? View.VISIBLE : View.GONE);
+    }
+}

app/src/main/java/eu/kanade/mangafeed/ui/reader/viewer/webtoon/WebtoonReader.java

@@ -25,6 +25,7 @@ public class WebtoonReader extends BaseReader {
 
     private WebtoonAdapter adapter;
     private RecyclerView recycler;
+    private PreCachingLayoutManager layoutManager;
     private Subscription subscription;
     private GestureDetector gestureDetector;
 
@@ -32,7 +33,7 @@ public class WebtoonReader extends BaseReader {
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedState) {
         adapter = new WebtoonAdapter(this);
-        PreCachingLayoutManager layoutManager = new PreCachingLayoutManager(getActivity());
+        layoutManager = new PreCachingLayoutManager(getActivity());
         layoutManager.setExtraLayoutSpace(getResources().getDisplayMetrics().heightPixels);
 
         recycler = new RecyclerView(getActivity());
@@ -40,15 +41,6 @@ public class WebtoonReader extends BaseReader {
         recycler.setLayoutManager(layoutManager);
         recycler.setItemAnimator(null);
         recycler.setAdapter(adapter);
-        recycler.addOnScrollListener(new RecyclerView.OnScrollListener() {
-            @Override
-            public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
-                super.onScrolled(recyclerView, dx, dy);
-
-                currentPage = layoutManager.findLastVisibleItemPosition();
-                updatePageNumber();
-            }
-        });
 
         gestureDetector = new GestureDetector(getActivity(), new SimpleOnGestureListener() {
             @Override
@@ -100,11 +92,27 @@ public class WebtoonReader extends BaseReader {
     private void setPages() {
         if (pages != null) {
             unsubscribeStatus();
+            recycler.clearOnScrollListeners();
             adapter.clear();
+            recycler.scrollTo(0, 0);
+            adapter.setPages(pages);
+            setScrollListener();
             observeStatus(0);
         }
     }
 
+    private void setScrollListener() {
+        recycler.addOnScrollListener(new RecyclerView.OnScrollListener() {
+            @Override
+            public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
+                super.onScrolled(recyclerView, dx, dy);
+
+                currentPage = layoutManager.findLastVisibleItemPosition();
+                updatePageNumber();
+            }
+        });
+    }
+
     @Override
     public boolean onImageTouch(MotionEvent motionEvent) {
         return gestureDetector.onTouchEvent(motionEvent);
@@ -115,7 +123,6 @@ public class WebtoonReader extends BaseReader {
             return;
 
         final Page page = pages.get(position);
-        adapter.addPage(page);
 
         PublishSubject<Integer> statusSubject = PublishSubject.create();
         page.setStatusSubject(statusSubject);
@@ -130,17 +137,9 @@ public class WebtoonReader extends BaseReader {
     }
 
     private void processStatus(int position, int status) {
-        switch (status) {
-            case Page.LOAD_PAGE:
-                break;
-            case Page.DOWNLOAD_IMAGE:
-                break;
-            case Page.READY:
         adapter.notifyItemChanged(position);
+        if (status == Page.READY) {
             observeStatus(position + 1);
-                break;
-            case Page.ERROR:
-                break;
         }
     }
 

app/src/main/res/layout/item_pager_reader.xml

@@ -34,7 +34,7 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:id="@+id/retry_button"
-        android:text="Retry"
+        android:text="@string/action_retry"
         android:layout_gravity="center"
         android:visibility="gone"/>
 

app/src/main/res/layout/item_webtoon_reader.xml

@@ -4,6 +4,11 @@
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="300dp"
+        android:id="@+id/frame_container">
+
         <ProgressBar
             android:id="@+id/progress"
             style="?android:attr/progressBarStyleLarge"
@@ -11,6 +16,16 @@
             android:layout_height="wrap_content"
             android:layout_gravity="center_vertical|center_horizontal"/>
 
+        <Button
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:id="@+id/retry_button"
+            android:text="@string/action_retry"
+            android:layout_gravity="center_vertical|center_horizontal"
+            android:visibility="gone" />
+
+    </FrameLayout>
+
     <include layout="@layout/chapter_image"/>
 
 </FrameLayout>

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

@@ -36,6 +36,7 @@
     <string name="action_stop">Stop</string>
     <string name="action_previous_chapter">Previous chapter</string>
     <string name="action_next_chapter">Next chapter</string>
+    <string name="action_retry">Retry</string>
 
 
     <!-- Buttons -->