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/*
* Copyright (C) 2012 Andrew Neal
* Copyright (C) 2014 The CyanogenMod Project
* Licensed under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law
* or agreed to in writing, software distributed under the License is
* distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the specific language
* governing permissions and limitations under the License.
*/
package org.lineageos.eleven.adapters;
import android.app.Activity;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import org.lineageos.eleven.R;
import org.lineageos.eleven.cache.ImageFetcher;
import org.lineageos.eleven.model.Artist;
import org.lineageos.eleven.sectionadapter.SectionAdapter.BasicAdapter;
import org.lineageos.eleven.ui.MusicHolder;
import org.lineageos.eleven.ui.MusicHolder.DataHolder;
import org.lineageos.eleven.utils.ApolloUtils;
import org.lineageos.eleven.utils.MusicUtils;
import org.lineageos.eleven.widgets.IPopupMenuCallback;
/**
* This {@link ArrayAdapter} is used to display all of the artists on a user's
* device for {@link ArtistFragment}.
*
* @author Andrew Neal (andrewdneal@gmail.com)
*/
/**
* @author Andrew Neal (andrewdneal@gmail.com)
*/
public class ArtistAdapter extends ArrayAdapter<Artist> implements BasicAdapter, IPopupMenuCallback {
/**
* Number of views (ImageView and TextView)
*/
private static final int VIEW_TYPE_COUNT = 2;
/**
* The resource Id of the layout to inflate
*/
private final int mLayoutId;
/**
* Image cache and image fetcher
*/
private final ImageFetcher mImageFetcher;
/**
* Semi-transparent overlay
*/
private final int mOverlay;
/**
* Used to cache the artist info
*/
private DataHolder[] mData;
/**
* Used to listen to the pop up menu callbacks
*/
private IListener mListener;
/**
* Constructor of <code>ArtistAdapter</code>
*
* @param context The {@link Context} to use.
* @param layoutId The resource Id of the view to inflate.
*/
public ArtistAdapter(final Activity context, final int layoutId) {
super(context, 0);
// Get the layout Id
mLayoutId = layoutId;
// Initialize the cache & image fetcher
mImageFetcher = ApolloUtils.getImageFetcher(context);
// Cache the transparent overlay
mOverlay = context.getResources().getColor(R.color.list_item_background);
}
/**
* {@inheritDoc}
*/
@Override
public View getView(final int position, View convertView, final ViewGroup parent) {
// Recycle ViewHolder's items
MusicHolder holder;
if (convertView == null) {
convertView = LayoutInflater.from(getContext()).inflate(mLayoutId, parent, false);
holder = new MusicHolder(convertView);
convertView.setTag(holder);
// set the pop up menu listener
holder.mPopupMenuButton.get().setPopupMenuClickedListener(mListener);
} else {
holder = (MusicHolder)convertView.getTag();
}
// Retrieve the data holder
final DataHolder dataHolder = mData[position];
// Set each artist name (line one)
holder.mLineOne.get().setText(dataHolder.mLineOne);
// Set the number of albums (line two)
holder.mLineTwo.get().setText(dataHolder.mLineTwo);
// Asynchronously load the artist image into the adapter
mImageFetcher.loadArtistImage(dataHolder.mLineOne, holder.mImage.get());
// because of recycling, we need to set the position each time
holder.mPopupMenuButton.get().setPosition(position);
return convertView;
}
/**
* {@inheritDoc}
*/
@Override
public boolean hasStableIds() {
return true;
}
/**
* {@inheritDoc}
*/
@Override
public int getViewTypeCount() {
return VIEW_TYPE_COUNT;
}
/**
* Method used to cache the data used to populate the list or grid. The idea
* is to cache everything before {@code #getView(int, View, ViewGroup)} is
* called.
*/
public void buildCache() {
mData = new DataHolder[getCount()];
for (int i = 0; i < getCount(); i++) {
// Build the artist
final Artist artist = getItem(i);
// Build the data holder
mData[i] = new DataHolder();
// Artist Id
mData[i].mItemId = artist.mArtistId;
// Artist names (line one)
mData[i].mLineOne = artist.mArtistName;
String albumNumber = MusicUtils.makeLabel(getContext(),
R.plurals.Nalbums, artist.mAlbumNumber);
String songNumber = MusicUtils.makeLabel(getContext(),
R.plurals.Nsongs, artist.mSongNumber);
mData[i].mLineTwo = MusicUtils.makeCombinedString(getContext(), albumNumber, songNumber);
}
}
/**
* Method that unloads and clears the items in the adapter
*/
public void unload() {
clear();
mData = null;
}
/**
* @param pause True to temporarily pause the disk cache, false otherwise.
*/
public void setPauseDiskCache(final boolean pause) {
if (mImageFetcher != null) {
mImageFetcher.setPauseDiskCache(pause);
}
}
/**
* @param artist The key used to find the cached artist to remove
*/
public void removeFromCache(final Artist artist) {
if (mImageFetcher != null) {
mImageFetcher.removeFromCache(artist.mArtistName);
}
}
/**
* Flushes the disk cache.
*/
public void flush() {
mImageFetcher.flush();
}
/**
* Gets the item position for a given id
* @param id identifies the object
* @return the position if found, -1 otherwise
*/
@Override
public int getItemPosition(long id) {
for (int i = 0; i < getCount(); i++) {
if (getItem(i).mArtistId == id) {
return i;
}
}
return -1;
}
@Override
public void setPopupMenuClickedListener(IListener listener) {
mListener = listener;
}
}
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