#663 Make Search results expandable

2 files changed, 167 insertions, 12 deletions

diff --git a/app/src/main/java/github/daneren2005/dsub/adapter/ExpandableSectionAdapter.java b/app/src/main/java/github/daneren2005/dsub/adapter/ExpandableSectionAdapter.java
new file mode 100644
index 00000000..822c83f3
--- /dev/null
+++ b/app/src/main/java/github/daneren2005/dsub/adapter/ExpandableSectionAdapter.java
@@ -0,0 +1,144 @@
+/*
+  This file is part of Subsonic.
+	Subsonic is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+	Subsonic is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+	GNU General Public License for more details.
+	You should have received a copy of the GNU General Public License
+	along with Subsonic. If not, see <http://www.gnu.org/licenses/>.
+	Copyright 2015 (C) Scott Jackson
+*/
+
+package github.daneren2005.dsub.adapter;
+
+import android.content.Context;
+import android.util.Log;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import github.daneren2005.dsub.R;
+import github.daneren2005.dsub.util.DrawableTint;
+import github.daneren2005.dsub.view.BasicHeaderView;
+import github.daneren2005.dsub.view.UpdateView;
+
+public abstract class ExpandableSectionAdapter<T> extends SectionAdapter<T> {
+	private static final String TAG = ExpandableSectionAdapter.class.getSimpleName();
+	private static final int DEFAULT_VISIBLE = 4;
+	private static final int EXPAND_TOGGLE = R.attr.select_server;
+	private static final int COLLAPSE_TOGGLE = R.attr.select_tabs;
+
+	protected List<Integer> sectionsDefaultVisible;
+	protected List<List<T>> sectionsExtras;
+	protected int expandToggleRes;
+	protected int collapseToggleRes;
+
+	protected ExpandableSectionAdapter() {}
+	public ExpandableSectionAdapter(Context context, List<String> headers, List<List<T>> sections) {
+		init(context, headers, sections, null);
+	}
+	public ExpandableSectionAdapter(Context context, List<String> headers, List<List<T>> sections, List<Integer> sectionsDefaultVisible) {
+		init(context, headers, sections, sectionsDefaultVisible);
+	}
+	protected void init(Context context, List<String> headers, List<List<T>> fullSections, List<Integer> sectionsDefaultVisible) {
+		this.context = context;
+		this.headers = headers;
+		this.sectionsDefaultVisible = sectionsDefaultVisible;
+		if(sectionsDefaultVisible == null) {
+			sectionsDefaultVisible = new ArrayList<>(fullSections.size());
+			for(int i = 0; i < fullSections.size(); i++) {
+				sectionsDefaultVisible.add(DEFAULT_VISIBLE);
+			}
+		}
+
+		this.sections = new ArrayList<>();
+		this.sectionsExtras = new ArrayList<>();
+		int i = 0;
+		for(List<T> fullSection: fullSections) {
+			List<T> visibleSection = new ArrayList<>();
+
+			Integer defaultVisible = sectionsDefaultVisible.get(i);
+			if(defaultVisible == null || defaultVisible >= fullSection.size()) {
+				visibleSection.addAll(fullSection);
+				this.sectionsExtras.add(null);
+			} else {
+				visibleSection.addAll(fullSection.subList(0, defaultVisible));
+				this.sectionsExtras.add(fullSection.subList(defaultVisible, fullSection.size()));
+				Log.d(TAG, visibleSection.size() + " + " + this.sectionsExtras.get(i).size());
+			}
+			this.sections.add(visibleSection);
+
+			i++;
+		}
+
+		expandToggleRes = DrawableTint.getDrawableRes(context, EXPAND_TOGGLE);
+		collapseToggleRes = DrawableTint.getDrawableRes(context, COLLAPSE_TOGGLE);
+	}
+
+	@Override
+	public UpdateView.UpdateViewHolder onCreateHeaderHolder(ViewGroup parent) {
+		return new UpdateView.UpdateViewHolder(new BasicHeaderView(context, R.layout.expandable_header));
+	}
+
+	@Override
+	public void onBindHeaderHolder(UpdateView.UpdateViewHolder holder, String header, final int sectionIndex) {
+		UpdateView view = holder.getUpdateView();
+		ImageView toggleSelectionView = (ImageView) view.findViewById(R.id.item_select);
+
+		List<T> visibleSelection = sections.get(sectionIndex);
+		List<T> sectionExtras = sectionsExtras.get(sectionIndex);
+
+		if(sectionExtras != null && !sectionExtras.isEmpty()) {
+			toggleSelectionView.setVisibility(View.VISIBLE);
+			toggleSelectionView.setOnClickListener(new View.OnClickListener() {
+				@Override
+				public void onClick(View v) {
+					List<T> visibleSelection = sections.get(sectionIndex);
+					List<T> sectionExtras = sectionsExtras.get(sectionIndex);
+
+					// Update icon
+					int selectToggleAttr;
+					if (!visibleSelection.contains(sectionExtras.get(0))) {
+						selectToggleAttr = COLLAPSE_TOGGLE;
+
+						// Update how many are displayed
+						int lastIndex = getItemPosition(visibleSelection.get(visibleSelection.size() - 1));
+						visibleSelection.addAll(sectionExtras);
+						notifyItemRangeInserted(lastIndex, sectionExtras.size());
+					} else {
+						selectToggleAttr = EXPAND_TOGGLE;
+
+						// Update how many are displayed
+						visibleSelection.removeAll(sectionExtras);
+						int lastIndex = getItemPosition(visibleSelection.get(visibleSelection.size() - 1));
+						notifyItemRangeRemoved(lastIndex, sectionExtras.size());
+					}
+
+					((ImageView) v).setImageResource(DrawableTint.getDrawableRes(context, selectToggleAttr));
+				}
+			});
+
+			int selectToggleAttr;
+			if (!visibleSelection.contains(sectionExtras.get(0))) {
+				selectToggleAttr = EXPAND_TOGGLE;
+			} else {
+				selectToggleAttr = COLLAPSE_TOGGLE;
+			}
+
+			toggleSelectionView.setImageResource(DrawableTint.getDrawableRes(context, selectToggleAttr));
+		} else {
+			toggleSelectionView.setVisibility(View.GONE);
+		}
+
+		if(view != null) {
+			view.setObject(header);
+		}
+	}
+}
diff --git a/app/src/main/java/github/daneren2005/dsub/adapter/SearchAdapter.java b/app/src/main/java/github/daneren2005/dsub/adapter/SearchAdapter.java
index 66f2db21..69e5d56d 100644
--- a/app/src/main/java/github/daneren2005/dsub/adapter/SearchAdapter.java
+++ b/app/src/main/java/github/daneren2005/dsub/adapter/SearchAdapter.java
@@ -19,7 +19,9 @@ import android.content.Context;
 import android.content.res.Resources;
 import android.view.Menu;
 import android.view.MenuInflater;
+import android.view.View;
 import android.view.ViewGroup;
+import android.widget.ImageView;
 
 import java.io.Serializable;
 import java.util.ArrayList;
@@ -28,10 +30,12 @@ import java.util.List;
 import github.daneren2005.dsub.R;
 import github.daneren2005.dsub.domain.MusicDirectory.Entry;
 import github.daneren2005.dsub.domain.SearchResult;
+import github.daneren2005.dsub.util.DrawableTint;
 import github.daneren2005.dsub.util.ImageLoader;
 import github.daneren2005.dsub.util.Util;
 import github.daneren2005.dsub.view.AlbumView;
 import github.daneren2005.dsub.view.ArtistView;
+import github.daneren2005.dsub.view.BasicHeaderView;
 import github.daneren2005.dsub.view.SongView;
 import github.daneren2005.dsub.view.UpdateView;
 
@@ -40,32 +44,39 @@ import static github.daneren2005.dsub.adapter.EntryGridAdapter.VIEW_TYPE_ALBUM_C
 import static github.daneren2005.dsub.adapter.EntryGridAdapter.VIEW_TYPE_ALBUM_LINE;
 import static github.daneren2005.dsub.adapter.EntryGridAdapter.VIEW_TYPE_SONG;
 
-public class SearchAdapter extends SectionAdapter<Serializable> {
-	private SearchResult searchResult;
+public class SearchAdapter extends ExpandableSectionAdapter<Serializable> {
 	private ImageLoader imageLoader;
 	private boolean largeAlbums;
 
+	private static final int MAX_ARTISTS = 10;
+	private static final int MAX_ALBUMS = 4;
+	private static final int MAX_SONGS = 10;
+
 	public SearchAdapter(Context context, SearchResult searchResult, ImageLoader imageLoader, boolean largeAlbums, OnItemClickedListener listener) {
-		this.context = context;
-		this.searchResult = searchResult;
 		this.imageLoader = imageLoader;
 		this.largeAlbums = largeAlbums;
 
-		this.sections = new ArrayList<>();
-		this.headers = new ArrayList<>();
+		List<List<Serializable>> sections = new ArrayList<>();
+		List<String> headers = new ArrayList<>();
+		List<Integer> defaultVisible = new ArrayList<>();
 		Resources res = context.getResources();
 		if(!searchResult.getArtists().isEmpty()) {
-			this.sections.add((List<Serializable>) (List<?>) searchResult.getArtists());
-			this.headers.add(res.getString(R.string.search_artists));
+			sections.add((List<Serializable>) (List<?>) searchResult.getArtists());
+			headers.add(res.getString(R.string.search_artists));
+			defaultVisible.add(MAX_ARTISTS);
 		}
 		if(!searchResult.getAlbums().isEmpty()) {
-			this.sections.add((List<Serializable>) (List<?>) searchResult.getAlbums());
-			this.headers.add(res.getString(R.string.search_albums));
+			sections.add((List<Serializable>) (List<?>) searchResult.getAlbums());
+			headers.add(res.getString(R.string.search_albums));
+			defaultVisible.add(MAX_ALBUMS);
 		}
 		if(!searchResult.getSongs().isEmpty()) {
-			this.sections.add((List<Serializable>) (List<?>) searchResult.getSongs());
-			this.headers.add(res.getString(R.string.search_songs));
+			sections.add((List<Serializable>) (List<?>) searchResult.getSongs());
+			headers.add(res.getString(R.string.search_songs));
+			defaultVisible.add(MAX_SONGS);
 		}
+		init(context, headers, sections, defaultVisible);
+
 		this.onItemClickedListener = listener;
 		checkable = true;
 	}