Added search function

app/src/main/java/srct/whatsopen/views/activities/MainActivity.java

 package srct.whatsopen.views.activities;
 
+import android.app.SearchManager;
 import android.content.Context;
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.os.Bundle;
+import android.support.v4.app.Fragment;
 import android.support.v4.view.ViewPager;
 import android.support.v7.app.AppCompatActivity;
 import android.support.v7.preference.PreferenceManager;
+import android.support.v7.widget.SearchView;
 import android.support.v7.widget.Toolbar;
 import android.view.Menu;
 import android.view.MenuItem;
@@ -21,7 +24,9 @@ import srct.whatsopen.MyApplication;
 import srct.whatsopen.R;
 import srct.whatsopen.presenters.MainPresenter;
 import srct.whatsopen.views.MainView;
+import srct.whatsopen.views.adapters.FacilityListAdapter;
 import srct.whatsopen.views.adapters.FacilityListFragmentPagerAdapter;
+import srct.whatsopen.views.fragments.FacilityListFragment;
 
 public class MainActivity extends AppCompatActivity implements MainView {
 
@@ -71,6 +76,9 @@ public class MainActivity extends AppCompatActivity implements MainView {
     @Override
     public boolean onCreateOptionsMenu(Menu menu) {
         getMenuInflater().inflate(R.menu.menu_main, menu);
+
+        configureSearchView(menu);
+
         return true;
     }
 
@@ -121,6 +129,40 @@ public class MainActivity extends AppCompatActivity implements MainView {
         }
     }
 
+    private void configureSearchView(Menu menu) {
+        // I think this is for doing the search asynchronously
+        SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
+
+        SearchView searchView = (SearchView) menu.findItem(R.id.action_search).getActionView();
+        searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));
+
+        // Set QueryTextListener
+        searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
+            @Override
+            public boolean onQueryTextSubmit(String query) {
+                return true;
+            }
+
+            @Override
+            public boolean onQueryTextChange(String newText) {
+                // kinda hacky way to get the Fragment through the multitudinous layers of
+                // ViewPager spaghetti. I mean, not that hacky, but it looks gross
+                Fragment fragment = getSupportFragmentManager()
+                        .findFragmentByTag("android:switcher:" + R.id.view_pager + ":" +
+                        mViewPager.getCurrentItem());
+
+                if(fragment != null) {
+                    FacilityListAdapter adapter = (FacilityListAdapter)
+                            ((FacilityListFragment) fragment).getRecyclerView().getAdapter();
+
+                    adapter.getFilter().filter(newText);
+                }
+
+                return true;
+            }
+        });
+    }
+
     @Override
     public void showProgressBar() {
         mViewPager.setVisibility(View.INVISIBLE);

app/src/main/java/srct/whatsopen/views/adapters/FacilityListAdapter.java

@@ -12,11 +12,14 @@ import android.support.v7.widget.RecyclerView;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
+import android.widget.Filter;
+import android.widget.Filterable;
 import android.widget.ImageButton;
 import android.widget.LinearLayout;
 import android.widget.TextView;
 import android.widget.Toast;
 
+import java.util.ArrayList;
 import java.util.Calendar;
 
 import butterknife.BindView;
@@ -25,6 +28,7 @@ import butterknife.ButterKnife;
 import butterknife.OnClick;
 import io.realm.OrderedRealmCollection;
 import io.realm.RealmRecyclerViewAdapter;
+import io.realm.RealmResults;
 import srct.whatsopen.R;
 import srct.whatsopen.model.Facility;
 import srct.whatsopen.views.FacilityView;
@@ -36,7 +40,8 @@ import srct.whatsopen.presenters.FacilityPresenter;
  */
 
 public class FacilityListAdapter extends
-        RealmRecyclerViewAdapter<Facility, FacilityListAdapter.ViewHolder> {
+        RealmRecyclerViewAdapter<Facility, FacilityListAdapter.ViewHolder> implements
+        Filterable {
 
     public FacilityListAdapter(Context context,
                                OrderedRealmCollection<Facility> data) {
@@ -51,8 +56,7 @@ public class FacilityListAdapter extends
 
         View facilityView = inflater.inflate(R.layout.item_facility, parent, false);
 
-        ViewHolder viewHolder = new ViewHolder(facilityView);
-        return viewHolder;
+        return new ViewHolder(facilityView);
     }
 
     @Override
@@ -127,6 +131,48 @@ public class FacilityListAdapter extends
         layout.setPadding(0, paddingTop, 0, paddingBottom);
     }
 
+    @Override
+    public Filter getFilter() {
+        return new Filter() {
+            @Override
+            protected FilterResults performFiltering(CharSequence constraint) {
+                /*
+                FilterResults results = new FilterResults();
+
+                // if there's no text in the search i.e. user hasn't typed anything yet
+                if(constraint == null || constraint.length() == 0) {
+                    results.values = getData();
+                    results.count = getData() != null ? getData().size() : 0;
+                }
+                else if(getData() != null) {
+                    ArrayList<Facility> filteredFacilities = new ArrayList<>();
+
+                    for(Facility f : getData()) {
+                        // search for Facilities which match the search text
+                        if(f.getName().toUpperCase().contains(constraint.toString().toUpperCase())){
+                            filteredFacilities.add(f);
+                        }
+
+                        results.values = filteredFacilities;
+                        results.count = filteredFacilities.size();
+                    }
+                }
+                */
+
+                return new FilterResults();
+            }
+
+            @Override
+            protected void publishResults(CharSequence constraint, FilterResults filterResults) {
+                if(constraint != null && getData() != null) {
+                    RealmResults<Facility> results = getData().where()
+                            .contains("mName", constraint.toString()).findAll();
+                    updateData(results);
+                }
+            }
+        };
+    }
+
     // Set up for the Recycler View cells
     public class ViewHolder extends RecyclerView.ViewHolder implements FacilityView {
 

app/src/main/java/srct/whatsopen/views/fragments/FacilityListFragment.java

@@ -140,6 +140,10 @@ public class FacilityListFragment extends android.support.v4.app.Fragment implem
         return getActivity();
     }
 
+    public RecyclerView getRecyclerView() {
+        return mRecyclerView;
+    }
+
     // Redraws RecyclerView if the settings have changed for it
     private void setPreferenceChangeListener() {
         SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(getContext());

app/src/main/res/menu/menu_main.xml

@@ -5,7 +5,8 @@
     <item
         android:id="@+id/action_search"
         android:icon="@drawable/ic_search_white_24dp"
-        app:showAsAction="ifRoom"
+        app:showAsAction="collapseActionView|ifRoom"
+        android:actionViewClass="android.widget.SearchView"
         android:title="Search"/>
 
     <item