Add empty list tip

app/src/main/java/com/hippo/ehviewer/ui/scene/AbsDragSortScene.java

@@ -34,6 +34,7 @@ import com.h6ah4i.android.widget.advrecyclerview.swipeable.SwipeableItemAdapter;
 import com.h6ah4i.android.widget.advrecyclerview.touchguard.RecyclerViewTouchActionGuardManager;
 import com.h6ah4i.android.widget.advrecyclerview.utils.AbstractDraggableSwipeableItemViewHolder;
 import com.h6ah4i.android.widget.advrecyclerview.utils.WrapperAdapterUtils;
+import com.hippo.effect.ViewTransition;
 import com.hippo.ehviewer.R;
 import com.hippo.rippleold.RippleSalon;
 import com.hippo.scene.AppbarScene;
@@ -46,6 +47,8 @@ import java.util.List;
 
 public abstract class AbsDragSortScene extends AppbarScene {
 
+    private ViewGroup mTip;
+    private TextView mTipTextView;
     private EasyRecyclerView mRecyclerView;
     private RecyclerView.LayoutManager mLayoutManager;
     private RecyclerView.Adapter mAdapter;
@@ -54,6 +57,8 @@ public abstract class AbsDragSortScene extends AppbarScene {
     private RecyclerViewSwipeManager mRecyclerViewSwipeManager;
     private RecyclerViewTouchActionGuardManager mRecyclerViewTouchActionGuardManager;
 
+    private ViewTransition mViewTransition;
+
     private int mOriginalPaddingBottom;
 
     @Override
@@ -65,6 +70,8 @@ public abstract class AbsDragSortScene extends AppbarScene {
 
         Resources resources = getStageActivity().getResources();
 
+        mTip = (ViewGroup) findViewById(R.id.tip);
+        mTipTextView = (TextView) mTip.findViewById(R.id.text_view);
         mRecyclerView = (EasyRecyclerView) findViewById(R.id.recycler_view);
         mOriginalPaddingBottom = mRecyclerView.getPaddingBottom();
 
@@ -118,11 +125,27 @@ public abstract class AbsDragSortScene extends AppbarScene {
         mRecyclerViewTouchActionGuardManager.attachRecyclerView(mRecyclerView);
         mRecyclerViewSwipeManager.attachRecyclerView(mRecyclerView);
         mRecyclerViewDragDropManager.attachRecyclerView(mRecyclerView);
+
+        mViewTransition = new ViewTransition(mTip, mRecyclerView);
+        if (mWrappedAdapter.getItemCount() == 0) {
+            mViewTransition.showView(0, false);
+        } else {
+            mViewTransition.showView(1, false);
+        }
+    }
+
+    public void setTipText(String text) {
+        mTipTextView.setText(text);
     }
 
     public void notifyDataSetChanged() {
         if (mWrappedAdapter != null) {
             mWrappedAdapter.notifyDataSetChanged();
+            if (mWrappedAdapter.getItemCount() == 0) {
+                mViewTransition.showView(0, true);
+            } else {
+                mViewTransition.showView(1, true);
+            }
         }
     }
 
@@ -311,6 +334,12 @@ public abstract class AbsDragSortScene extends AppbarScene {
                 onRemove(position);
                 mList.remove(position);
                 notifyItemRemoved(position);
+                // Try to show tip
+                if (mWrappedAdapter.getItemCount() == 0) {
+                    mViewTransition.showView(0, true);
+                } else {
+                    mViewTransition.showView(1, true);
+                }
             }
         }
 

app/src/main/java/com/hippo/ehviewer/ui/scene/DownloadLabelScene.java

@@ -49,6 +49,8 @@ public class DownloadLabelScene extends AbsDragSortScene implements AppbarScene.
     protected void onCreate(boolean rebirth) {
         super.onCreate(rebirth);
 
+        setTipText("No download label"); // TODO hardcode
+
         addAction(R.drawable.ic_plus_dark_x24);
 
         setOnClickActionListener(this);

app/src/main/java/com/hippo/ehviewer/ui/scene/DownloadScene.java

@@ -175,6 +175,7 @@ public class DownloadScene extends Scene implements DrawerProvider,
         mRightDrawerView.setOnItemClickListener(new DownloadTagClickListener());
         mRightDrawerView.setPlusVisibility(View.GONE);
         mRightDrawerView.setHelper(this);
+        mRightDrawerView.showRecyclerView(false);
     }
 
     @Override

app/src/main/java/com/hippo/ehviewer/ui/scene/GalleryListScene.java

@@ -334,6 +334,12 @@ public final class GalleryListScene extends Scene implements ListSearchBar.Helpe
         mRightDrawerView.setAdapter(mQuickSearchAdapter);
         mRightDrawerView.setOnItemClickListener(new QuickSearchClickListener());
         mRightDrawerView.setHelper(this);
+        mRightDrawerView.setTipText("No quick search"); // TODO hardcode
+        if (mQuickSearchAdapter.getItemCount() == 0) {
+            mRightDrawerView.showTip(false);
+        } else {
+            mRightDrawerView.showRecyclerView(false);
+        }
 
         // When scene start
         if (!rebirth) {
@@ -932,6 +938,11 @@ public final class GalleryListScene extends Scene implements ListSearchBar.Helpe
         } else if (Constants.MESSENGER_ID_UPDATE_QUICK_SEARCH == id) {
             mQuickSearches = DBUtils.getAllQuickSearch();
             mQuickSearchAdapter.notifyDataSetChanged();
+            if (mQuickSearchAdapter.getItemCount() == 0) {
+                mRightDrawerView.showTip(false);
+            } else {
+                mRightDrawerView.showRecyclerView(false);
+            }
         }
     }
 

app/src/main/java/com/hippo/ehviewer/ui/scene/QuickSearchScene.java

@@ -46,6 +46,13 @@ public class QuickSearchScene extends AbsDragSortScene implements Messenger.Rece
         Messenger.getInstance().unregister(Constants.MESSENGER_ID_UPDATE_QUICK_SEARCH_NAME, this);
     }
 
+    @Override
+    protected void onCreate(boolean rebirth) {
+        super.onCreate(rebirth);
+
+        setTipText("No quick search"); // TODO hardcode
+    }
+
     @Override
     protected void onDestroy(boolean die) {
         super.onDestroy(die);

app/src/main/java/com/hippo/ehviewer/widget/AppbarRecyclerView.java

@@ -22,9 +22,11 @@ import android.support.v7.widget.RecyclerView;
 import android.util.AttributeSet;
 import android.view.LayoutInflater;
 import android.view.View;
+import android.view.ViewGroup;
 import android.widget.LinearLayout;
 import android.widget.TextView;
 
+import com.hippo.effect.ViewTransition;
 import com.hippo.ehviewer.R;
 import com.hippo.rippleold.RippleSalon;
 import com.hippo.widget.recyclerview.EasyRecyclerView;
@@ -36,8 +38,12 @@ public class AppbarRecyclerView extends LinearLayout implements View.OnClickList
     public TextView mTitle;
     public View mPlus;
     public View mSettings;
+    public ViewGroup mTip;
+    public TextView mTipTextView;
     public EasyRecyclerView mRecyclerView;
 
+    public ViewTransition mViewTransition;
+
     public int mOriginalPaddingBottom;
 
     public Helper mHelper;
@@ -64,6 +70,8 @@ public class AppbarRecyclerView extends LinearLayout implements View.OnClickList
         mTitle = (TextView) findViewById(R.id.title);
         mPlus = findViewById(R.id.plus);
         mSettings = findViewById(R.id.settings);
+        mTip = (ViewGroup) findViewById(R.id.tip);
+        mTipTextView = (TextView) mTip.findViewById(R.id.text_view);
         mRecyclerView = (EasyRecyclerView) findViewById(R.id.recycler_view);
 
         mRecyclerView.setHasFixedSize(true);
@@ -85,6 +93,8 @@ public class AppbarRecyclerView extends LinearLayout implements View.OnClickList
         RippleSalon.addRipple(mSettings, true);
 
         mOriginalPaddingBottom = mRecyclerView.getPaddingBottom();
+
+        mViewTransition = new ViewTransition(mTip, mRecyclerView);
     }
 
     public void setHelper(Helper helper) {
@@ -95,10 +105,22 @@ public class AppbarRecyclerView extends LinearLayout implements View.OnClickList
         mTitle.setText(title);
     }
 
+    public void setTipText(String tipText) {
+        mTipTextView.setText(tipText);
+    }
+
     public void setAdapter(RecyclerView.Adapter adapter) {
         mRecyclerView.setAdapter(adapter);
     }
 
+    public void showTip(boolean animation) {
+        mViewTransition.showView(0, animation);
+    }
+
+    public void showRecyclerView(boolean animation) {
+        mViewTransition.showView(1, animation);
+    }
+
     public void setOnItemClickListener(EasyRecyclerView.OnItemClickListener listener) {
         mRecyclerView.setOnItemClickListener(listener);
     }