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      1 /*
      2  * Copyright (C) 2015 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package android.cts.jank.leanback.presenter;
     18 
     19 import android.content.Context;
     20 import android.graphics.drawable.Drawable;
     21 import android.support.v17.leanback.widget.HeaderItem;
     22 import android.support.v17.leanback.widget.ListRow;
     23 import android.support.v17.leanback.widget.Presenter;
     24 import android.support.v17.leanback.widget.RowHeaderPresenter;
     25 import android.view.LayoutInflater;
     26 import android.view.View;
     27 import android.view.ViewGroup;
     28 import android.widget.ImageView;
     29 import android.widget.TextView;
     30 
     31 import android.cts.jank.leanback.R;
     32 
     33 public class IconHeaderItemPresenter extends RowHeaderPresenter {
     34     private float mUnselectedAlpha;
     35 
     36     @Override
     37     public ViewHolder onCreateViewHolder(ViewGroup viewGroup) {
     38         mUnselectedAlpha = viewGroup.getResources()
     39                 .getFraction(R.fraction.lb_browse_header_unselect_alpha, 1, 1);
     40         LayoutInflater inflater = (LayoutInflater) viewGroup.getContext()
     41                 .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
     42 
     43         View view = inflater.inflate(R.layout.icon_header_item, null);
     44 
     45         return new ViewHolder(view);
     46     }
     47 
     48     @Override
     49     public void onBindViewHolder(Presenter.ViewHolder viewHolder, Object o) {
     50         HeaderItem headerItem = ((ListRow) o).getHeaderItem();
     51         View rootView = viewHolder.view;
     52 
     53         ImageView iconView = (ImageView) rootView.findViewById(R.id.header_icon);
     54         Drawable icon = rootView.getResources().getDrawable(R.drawable.android_header, null);
     55         iconView.setImageDrawable(icon);
     56 
     57         TextView label = (TextView) rootView.findViewById(R.id.header_label);
     58         label.setText(headerItem.getName());
     59     }
     60 
     61     @Override
     62     public void onUnbindViewHolder(Presenter.ViewHolder viewHolder) {
     63     }
     64 
     65     // TODO: TEMP - remove me when leanback onCreateViewHolder no longer sets the mUnselectAlpha,AND
     66     // also assumes the xml inflation will return a RowHeaderView
     67     @Override
     68     protected void onSelectLevelChanged(RowHeaderPresenter.ViewHolder holder) {
     69         // this is a temporary fix
     70         holder.view.setAlpha(mUnselectedAlpha + holder.getSelectLevel() *
     71                 (1.0f - mUnselectedAlpha));
     72     }
     73 }