[broken] Add initial ExpandableListView navbar

app/src/main/java/org/bspeice/minimalbible/activity/BaseNavigationDrawerFragment.java

@@ -16,6 +16,7 @@ import android.view.Menu;
 import android.view.MenuInflater;
 import android.view.MenuItem;
 import android.view.View;
+import android.widget.ExpandableListView;
 import android.widget.ListView;
 
 import com.readystatesoftware.systembartint.SystemBarTintManager;
@@ -28,6 +29,7 @@ import org.bspeice.minimalbible.R;
  * "https://developer.android.com/design/patterns/navigation-drawer.html#Interaction"
  * > design guidelines</a> for a complete explanation of the behaviors
  * implemented here.
+ * TODO: Refactor to allow ExpandableListView
  */
 public class BaseNavigationDrawerFragment extends Fragment {
 
@@ -41,22 +43,18 @@ public class BaseNavigationDrawerFragment extends Fragment {
 	 * user manually expands it. This shared preference tracks this.
 	 */
 	private static final String PREF_USER_LEARNED_DRAWER = "navigation_drawer_learned";
-
+    protected ListView mDrawerListView;
+    protected int mCurrentSelectedPosition = 0;
     /**
      * A pointer to the current callbacks instance (the Activity).
      */
     private NavigationDrawerCallbacks mCallbacks;
-
     /**
      * Helper component that ties the action bar to the navigation drawer.
 	 */
 	private ActionBarDrawerToggle mDrawerToggle;
-
 	private DrawerLayout mDrawerLayout;
-	protected ListView mDrawerListView;
 	private View mFragmentContainerView;
-
-	protected int mCurrentSelectedPosition = 0;
 	private boolean mFromSavedInstanceState;
 	private boolean mUserLearnedDrawer;
 
@@ -281,7 +279,7 @@ public class BaseNavigationDrawerFragment extends Fragment {
 		super.onViewCreated(view, savedInstanceState);
 
 		// This could also be a ScrollView
-		ListView list = (ListView) view.findViewById(R.id.list_nav_drawer);
+        ExpandableListView list = (ExpandableListView) view.findViewById(R.id.list_nav_drawer);
         // This could also be set in your layout, allows the list items to
 		// scroll through the bottom padded area (navigation bar)
 		list.setClipToPadding(false);

app/src/main/java/org/bspeice/minimalbible/activity/viewer/BibleNavAdapter.java

@@ -0,0 +1,200 @@
+package org.bspeice.minimalbible.activity.viewer;
+
+import android.content.Context;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.BaseExpandableListAdapter;
+import android.widget.TextView;
+
+import org.bspeice.minimalbible.Injector;
+import org.bspeice.minimalbible.R;
+import org.bspeice.minimalbible.activity.viewer.bookutil.VersificationUtil;
+import org.crosswire.jsword.book.Book;
+import org.crosswire.jsword.versification.BibleBook;
+import org.crosswire.jsword.versification.Versification;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.concurrent.atomic.AtomicInteger;
+
+import javax.inject.Inject;
+
+import butterknife.ButterKnife;
+import butterknife.InjectView;
+import rx.functions.Action1;
+
+public class BibleNavAdapter extends BaseExpandableListAdapter {
+
+    @Inject
+    VersificationUtil vUtil;
+    Versification versification;
+    Book book;
+
+    // Now we could technically implement this structure using a LinkedHashMap, but
+    // it's easier both to understand and program if we implement this using two maps.
+    Map<Integer, BibleBook> indexableBibleBooks;
+    Map<BibleBook, Integer> chaptersForBook;
+
+    private int groupHighlighted;
+    private int childHighlighted;
+
+    public BibleNavAdapter(final Book b, Injector injector) {
+        injector.inject(this);
+        this.book = b;
+        versification = vUtil.getVersification(book);
+
+        // Let the map know ahead of time how big it will be
+        // int bookCount = versification.getBookCount();
+        indexableBibleBooks = new HashMap<Integer, BibleBook>();
+        chaptersForBook = new HashMap<BibleBook, Integer>();
+
+        final AtomicInteger counter = new AtomicInteger(0);
+        vUtil.getBooks(book)
+                .forEach(new Action1<BibleBook>() {
+                    @Override
+                    public void call(BibleBook bibleBook) {
+                        indexableBibleBooks.put(counter.getAndIncrement(), bibleBook);
+                        chaptersForBook.put(bibleBook, vUtil.getChapterCount(b, bibleBook));
+                    }
+                });
+    }
+
+    @Override
+    public int getGroupCount() {
+        return indexableBibleBooks.size();
+    }
+
+    @Override
+    public int getChildrenCount(int i) {
+        return chaptersForBook.get(indexableBibleBooks.get(i));
+    }
+
+    @Override
+    public String getGroup(int i) {
+        return vUtil.getBookName(book, indexableBibleBooks.get(i));
+    }
+
+    /**
+     * Take a shortcut - since the second item is the (indexed) chapter number,
+     * we just need to add one to remove the off-by-one
+     *
+     * @param i  The group position
+     * @param i2 The child position
+     * @return The child chapter value
+     */
+    @Override
+    public Integer getChild(int i, int i2) {
+        return i2 + 1;
+    }
+
+    @Override
+    public long getGroupId(int i) {
+        return i;
+    }
+
+    @Override
+    public long getChildId(int i, int i2) {
+        return i2;
+    }
+
+    @Override
+    public boolean hasStableIds() {
+        return false;
+    }
+
+    /**
+     * Get the views for this group
+     *
+     * @param position
+     * @param expanded
+     * @param convertView
+     * @param parent
+     * @return
+     */
+    @Override
+    public View getGroupView(int position, boolean expanded,
+                             View convertView, ViewGroup parent) {
+        NavItemHolder<String> bookHolder;
+        if (convertView == null || convertView.getTag() == null) {
+            LayoutInflater inflater = (LayoutInflater) parent.getContext()
+                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+            convertView = inflater.inflate(R.layout.list_navigation_drawer,
+                    parent, false);
+            bookHolder = new NavItemHolder<String>(convertView);
+            convertView.setTag(bookHolder);
+        } else {
+            bookHolder = (NavItemHolder<String>) convertView.getTag();
+        }
+
+        bookHolder.bind(getGroup(position), position == groupHighlighted);
+        return convertView;
+    }
+
+    /**
+     * Get the view for a child
+     *
+     * @param groupPosition
+     * @param childPosition
+     * @param isLastChild
+     * @param convertView
+     * @param parent
+     * @return
+     */
+    @Override
+    public View getChildView(int groupPosition, int childPosition,
+                             boolean isLastChild, View convertView, ViewGroup parent) {
+        NavItemHolder<Integer> chapterHolder;
+        if (convertView == null || convertView.getTag() == null) {
+            LayoutInflater inflater = (LayoutInflater) parent.getContext()
+                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+            convertView = inflater.inflate(R.layout.list_navigation_drawer,
+                    parent, false);
+            chapterHolder = new NavItemHolder<Integer>(convertView);
+            convertView.setTag(chapterHolder);
+        } else {
+            chapterHolder = (NavItemHolder<Integer>) convertView.getTag();
+        }
+
+        chapterHolder.bind(getChild(groupPosition, childPosition),
+                childPosition == childHighlighted);
+        return convertView;
+    }
+
+    @Override
+    public boolean isChildSelectable(int i, int i2) {
+        return true;
+    }
+
+    public void setGroupHighlighted(int groupHighlighted) {
+        this.groupHighlighted = groupHighlighted;
+    }
+
+    public void setChildHighlighted(int childHighlighted) {
+        this.childHighlighted = childHighlighted;
+    }
+
+    /**
+     * Class to hold elements for the navbar - doesn't matter if they're group or child.
+     */
+    class NavItemHolder<T> {
+        @InjectView(R.id.navlist_content)
+        TextView content;
+
+        View v;
+
+        public NavItemHolder(View v) {
+            this.v = v; // Needed for resolving colors below
+            ButterKnife.inject(this, v);
+        }
+
+        public void bind(T object, boolean highlighted) {
+            content.setText(object.toString());
+            if (highlighted) {
+                content.setTextColor(v.getResources().getColor(R.color.navbar_highlight));
+            } else {
+                content.setTextColor(v.getResources().getColor(R.color.navbar_unhighlighted));
+            }
+        }
+    }
+}

app/src/main/java/org/bspeice/minimalbible/activity/viewer/BibleViewerModules.java

@@ -24,7 +24,8 @@ import rx.functions.Func1;
         injects = {
                 BibleViewer.class,
                 BookFragment.class,
-                ViewerNavDrawerFragment.class
+                ViewerNavDrawerFragment.class,
+                BibleNavAdapter.class
         },
         library = true
 )
@@ -35,17 +36,20 @@ public class BibleViewerModules {
         this.activity = activity;
     }
 
-    @Provides @Singleton
+    @Provides
+    @Singleton
     Injector provideInjector() {
         return activity;
     }
 
-    @Provides @Singleton
+    @Provides
+    @Singleton
     BibleViewerPreferences providePrefs() {
         return Esperandro.getPreferences(BibleViewerPreferences.class, activity);
     }
 
-    @Provides @Named("MainBook")
+    @Provides
+    @Named("MainBook")
     Book provideMainBook(BookManager bookManager, final BibleViewerPreferences prefs) {
         final AtomicReference<Book> mBook = new AtomicReference<Book>(null);
         bookManager.getInstalledBooks()

app/src/main/java/org/bspeice/minimalbible/activity/viewer/ViewerNavDrawerFragment.java

@@ -4,34 +4,39 @@ import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
-import android.widget.AdapterView;
-import android.widget.ListView;
+import android.widget.ExpandableListView;
 
 import org.bspeice.minimalbible.Injector;
 import org.bspeice.minimalbible.R;
 import org.bspeice.minimalbible.activity.BaseNavigationDrawerFragment;
-import org.bspeice.minimalbible.activity.NavDrawerAdapter;
 import org.bspeice.minimalbible.activity.viewer.bookutil.VersificationUtil;
 import org.crosswire.jsword.book.Book;
 
-import java.util.List;
-
 import javax.inject.Inject;
 import javax.inject.Named;
 
+/**
+ * ExpandableListView for managing books of the Bible.
+ * We extend from @link{BaseNavigationDrawerFragment} so we can inherit some of the lifecycle
+ * pieces, but the actual view inflation is done by us.
+ */
 public class ViewerNavDrawerFragment extends BaseNavigationDrawerFragment {
 
     @Inject VersificationUtil vUtil;
     @Inject @Named("MainBook")
     Book mainBook;
 
+    ExpandableListView mActualListView;
+
     @Override
 	public View onCreateView(LayoutInflater inflater, ViewGroup container,
 			Bundle savedInstanceState) {
-        ((Injector)getActivity()).inject(this);
+        Injector i = (Injector) getActivity();
+        i.inject(this);
 
-		mDrawerListView = (ListView) inflater.inflate(
-				R.layout.fragment_navigation_drawer, container, false);
+        mActualListView = (ExpandableListView) inflater.inflate(
+                R.layout.fragment_expandable_navigation_drawer, container, false);
+        /*
         mDrawerListView
 				.setOnItemClickListener(new AdapterView.OnItemClickListener() {
                     @Override
@@ -40,13 +45,11 @@ public class ViewerNavDrawerFragment extends BaseNavigationDrawerFragment {
                         selectItem(position);
                     }
                 });
-        List<String> bookNames = vUtil.getNiceBookNames(mainBook)
-                .toList().toBlocking().first();
+        */
 
-        mDrawerListView.setAdapter(new NavDrawerAdapter<String>(getActionBar()
-				.getThemedContext(), bookNames));
+        mActualListView.setAdapter(new BibleNavAdapter(mainBook, i));
 
-		mDrawerListView.setItemChecked(mCurrentSelectedPosition, true);
-		return mDrawerListView;
+        mActualListView.setItemChecked(mCurrentSelectedPosition, true);
+        return mActualListView;
     }
 }

app/src/main/java/org/bspeice/minimalbible/activity/viewer/bookutil/VersificationUtil.java

@@ -24,13 +24,14 @@ public class VersificationUtil {
         add(BibleBook.INTRO_NT);
     }};
 
+    // TODO: Cache the versification?
     public Versification getVersification(Book b) {
         return Versifications.instance().getVersification(
                 (String) b.getBookMetaData().getProperty(BookMetaData.KEY_VERSIFICATION)
         );
     }
 
-    public Observable<BibleBook> getBookNames(Book b) {
+    public Observable<BibleBook> getBooks(Book b) {
         Versification v = getVersification(b);
         return Observable.from(IteratorUtil.copyIterator(v.getBookIterator()))
                 .filter(new Func1<BibleBook, Boolean>() {
@@ -41,14 +42,21 @@ public class VersificationUtil {
                 });
     }
 
-    public Observable<String> getNiceBookNames(final Book b) {
-
-        return getBookNames(b)
+    public Observable<String> getBookNames(final Book b) {
+        return getBooks(b)
                 .map(new Func1<BibleBook, String>() {
                     @Override
                     public String call(BibleBook bibleBook) {
-                        return getVersification(b).getLongName(bibleBook);
+                        return getBookName(b, bibleBook);
                     }
                 });
     }
+
+    public Integer getChapterCount(Book b, BibleBook bibleBook) {
+        return getVersification(b).getLastChapter(bibleBook);
+    }
+
+    public String getBookName(Book book, BibleBook bibleBook) {
+        return getVersification(book).getLongName(bibleBook);
+    }
 }

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

@@ -0,0 +1,12 @@
+<ExpandableListView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/list_nav_drawer"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="#cccccc"
+    android:choiceMode="singleChoice"
+    android:divider="@android:color/transparent"
+    android:dividerHeight="0dp"
+    tools:context="org.bspeice.minimalbible.activity.viewer.ViewerNavDrawerFragment">
+
+</ExpandableListView>