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/*
* Copyright (C) 2012 Andrew Neal 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 com.andrew.apollo.adapters;
import android.content.Context;
import android.util.TypedValue;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import com.andrew.apollo.R;
import com.andrew.apollo.model.Genre;
import com.andrew.apollo.ui.MusicHolder;
import com.andrew.apollo.ui.MusicHolder.DataHolder;
import com.andrew.apollo.ui.fragments.GenreFragment;
/**
* This {@link ArrayAdapter} is used to display all of the genres on a user's
* device for {@link GenreFragment} .
*
* @author Andrew Neal (andrewdneal@gmail.com)
*/
public class GenreAdapter extends ArrayAdapter<Genre> {
/**
* Number of views (TextView)
*/
private static final int VIEW_TYPE_COUNT = 1;
/**
* The resource Id of the layout to inflate
*/
private final int mLayoutId;
/**
* Used to cache the genre info
*/
private DataHolder[] mData;
/**
* Constructor of <code>GenreAdapter</code>
*
* @param context The {@link Context} to use.
* @param layoutId The resource Id of the view to inflate.
*/
public GenreAdapter(final Context context, final int layoutId) {
super(context, 0);
// Get the layout Id
mLayoutId = layoutId;
}
/**
* {@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);
// Hide the second and third lines of text
holder.mLineTwo.get().setVisibility(View.GONE);
holder.mLineThree.get().setVisibility(View.GONE);
// Make line one slightly larger
holder.mLineOne.get().setTextSize(TypedValue.COMPLEX_UNIT_PX,
getContext().getResources().getDimension(R.dimen.text_size_large));
convertView.setTag(holder);
} else {
holder = (MusicHolder)convertView.getTag();
}
// Retrieve the data holder
final DataHolder dataHolder = mData[position];
// Set each genre name (line one)
holder.mLineOne.get().setText(dataHolder.mLineOne);
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 Genre genre = getItem(i);
// Build the data holder
mData[i] = new DataHolder();
// Genre Id
mData[i].mItemId = genre.mGenreId;
// Genre names (line one)
mData[i].mLineOne = genre.mGenreName;
}
}
/**
* Method that unloads and clears the items in the adapter
*/
public void unload() {
clear();
mData = null;
}
}
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