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/*
* Copyright (C) 2015 The Android Open Source 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 com.android.tv.guide;
import android.content.Context;
import android.support.annotation.MainThread;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import com.android.tv.R;
import com.android.tv.data.GenreItems;
import java.util.List;
/**
* Adapts the genre items obtained from {@link GenreItems} to the program guide side panel.
*/
class GenreListAdapter extends RecyclerView.Adapter<GenreListAdapter.GenreRowHolder> {
private static final String TAG = "GenreListAdapter";
private static final boolean DEBUG = false;
private final Context mContext;
private final ProgramManager mProgramManager;
private final ProgramGuide mProgramGuide;
private String[] mGenreLabels;
GenreListAdapter(Context context, ProgramManager programManager, ProgramGuide guide) {
mContext = context;
mProgramManager = programManager;
mProgramManager.addListener(new ProgramManager.ListenerAdapter() {
@Override
public void onGenresUpdated() {
mGenreLabels = GenreItems.getLabels(mContext);
notifyDataSetChanged();
}
});
mProgramGuide = guide;
}
@Override
public int getItemCount() {
List<Integer> filteredGenreIds = mProgramManager.getFilteredGenreIds();
if (filteredGenreIds == null) {
// Genre item would be available after program manager builds genre filter.
return 0;
}
return filteredGenreIds.size();
}
@Override
public int getItemViewType(int position) {
return R.layout.program_guide_side_panel_row;
}
@Override
public void onBindViewHolder(GenreRowHolder holder, int position) {
List<Integer> filteredGenreIds = mProgramManager.getFilteredGenreIds();
int genreId = filteredGenreIds.get(position);
holder.onBind(genreId, mGenreLabels[genreId]);
}
@Override
public GenreRowHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext()).inflate(viewType, parent, false);
itemView.addOnAttachStateChangeListener(new View.OnAttachStateChangeListener() {
@Override
public void onViewAttachedToWindow(View view) {
// Animation is not meaningful now, skip it.
view.getStateListAnimator().jumpToCurrentState();
}
@Override
public void onViewDetachedFromWindow(View view) {
// Do nothing
}
});
return new GenreRowHolder(itemView, mProgramGuide);
}
static class GenreRowHolder extends RecyclerView.ViewHolder implements
View.OnFocusChangeListener {
private final ProgramGuide mProgramGuide;
private int mGenreId;
@MainThread
GenreRowHolder(View itemView, ProgramGuide programGuide) {
super(itemView);
mProgramGuide = programGuide;
}
public void onBind(int genreId, String genreLabel) {
mGenreId = genreId;
TextView textView = (TextView) itemView;
textView.setText(genreLabel);
itemView.setOnFocusChangeListener(this);
}
@Override
public void onFocusChange(View view, boolean hasFocus) {
if (hasFocus) {
if (DEBUG) {
Log.d(TAG, "onFocusChanged " + ((TextView) view).getText()
+ "(" + mGenreId + ") hasFocus");
}
mProgramGuide.requestGenreChange(mGenreId);
}
}
}
}
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