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      1 /*
      2  * Copyright (C) 2016 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 com.android.tv.dvr.ui.browse;
     18 
     19 import android.graphics.drawable.Drawable;
     20 import android.support.v17.leanback.R;
     21 import android.support.v17.leanback.widget.Action;
     22 import android.support.v17.leanback.widget.Presenter;
     23 import android.support.v17.leanback.widget.PresenterSelector;
     24 import android.text.TextUtils;
     25 import android.view.LayoutInflater;
     26 import android.view.View;
     27 import android.view.ViewGroup;
     28 import android.widget.Button;
     29 
     30 // This class is adapted from Leanback's library, which does not support action icon with one-line
     31 // label. This class modified its getPresenter method to support the above situation.
     32 class ActionPresenterSelector extends PresenterSelector {
     33     private final Presenter mOneLineActionPresenter = new OneLineActionPresenter();
     34     private final Presenter mTwoLineActionPresenter = new TwoLineActionPresenter();
     35     private final Presenter[] mPresenters = new Presenter[] {
     36             mOneLineActionPresenter, mTwoLineActionPresenter};
     37 
     38     @Override
     39     public Presenter getPresenter(Object item) {
     40         Action action = (Action) item;
     41         if (TextUtils.isEmpty(action.getLabel2()) && action.getIcon() == null) {
     42             return mOneLineActionPresenter;
     43         } else {
     44             return mTwoLineActionPresenter;
     45         }
     46     }
     47 
     48     @Override
     49     public Presenter[] getPresenters() {
     50         return mPresenters;
     51     }
     52 
     53     static class ActionViewHolder extends Presenter.ViewHolder {
     54         Action mAction;
     55         Button mButton;
     56         int mLayoutDirection;
     57 
     58         public ActionViewHolder(View view, int layoutDirection) {
     59             super(view);
     60             mButton = (Button) view.findViewById(R.id.lb_action_button);
     61             mLayoutDirection = layoutDirection;
     62         }
     63     }
     64 
     65     class OneLineActionPresenter extends Presenter {
     66         @Override
     67         public ViewHolder onCreateViewHolder(ViewGroup parent) {
     68             View v = LayoutInflater.from(parent.getContext())
     69                     .inflate(R.layout.lb_action_1_line, parent, false);
     70             return new ActionViewHolder(v, parent.getLayoutDirection());
     71         }
     72 
     73         @Override
     74         public void onBindViewHolder(Presenter.ViewHolder viewHolder, Object item) {
     75             Action action = (Action) item;
     76             ActionViewHolder vh = (ActionViewHolder) viewHolder;
     77             vh.mAction = action;
     78             vh.mButton.setText(action.getLabel1());
     79         }
     80 
     81         @Override
     82         public void onUnbindViewHolder(Presenter.ViewHolder viewHolder) {
     83             ((ActionViewHolder) viewHolder).mAction = null;
     84         }
     85     }
     86 
     87     class TwoLineActionPresenter extends Presenter {
     88         @Override
     89         public ViewHolder onCreateViewHolder(ViewGroup parent) {
     90             View v = LayoutInflater.from(parent.getContext())
     91                     .inflate(R.layout.lb_action_2_lines, parent, false);
     92             return new ActionViewHolder(v, parent.getLayoutDirection());
     93         }
     94 
     95         @Override
     96         public void onBindViewHolder(Presenter.ViewHolder viewHolder, Object item) {
     97             Action action = (Action) item;
     98             ActionViewHolder vh = (ActionViewHolder) viewHolder;
     99             Drawable icon = action.getIcon();
    100             vh.mAction = action;
    101 
    102             if (icon != null) {
    103                 final int startPadding = vh.view.getResources()
    104                         .getDimensionPixelSize(R.dimen.lb_action_with_icon_padding_start);
    105                 final int endPadding = vh.view.getResources()
    106                         .getDimensionPixelSize(R.dimen.lb_action_with_icon_padding_end);
    107                 vh.view.setPaddingRelative(startPadding, 0, endPadding, 0);
    108             } else {
    109                 final int padding = vh.view.getResources()
    110                         .getDimensionPixelSize(R.dimen.lb_action_padding_horizontal);
    111                 vh.view.setPaddingRelative(padding, 0, padding, 0);
    112             }
    113             vh.mButton.setCompoundDrawablesRelativeWithIntrinsicBounds(icon, null, null, null);
    114 
    115             CharSequence line1 = action.getLabel1();
    116             CharSequence line2 = action.getLabel2();
    117             if (TextUtils.isEmpty(line1)) {
    118                 vh.mButton.setText(line2);
    119             } else if (TextUtils.isEmpty(line2)) {
    120                 vh.mButton.setText(line1);
    121             } else {
    122                 vh.mButton.setText(line1 + "\n" + line2);
    123             }
    124         }
    125 
    126         @Override
    127         public void onUnbindViewHolder(Presenter.ViewHolder viewHolder) {
    128             ActionViewHolder vh = (ActionViewHolder) viewHolder;
    129             vh.mButton.setCompoundDrawablesRelativeWithIntrinsicBounds(null, null, null, null);
    130             vh.view.setPadding(0, 0, 0, 0);
    131             vh.mAction = null;
    132         }
    133     }
    134 }