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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"); you may not use this file
      5  * except in compliance with the License. You may obtain a copy of the License at
      6  *
      7  *      http://www.apache.org/licenses/LICENSE-2.0
      8  *
      9  * Unless required by applicable law or agreed to in writing, software distributed under the
     10  * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
     11  * KIND, either express or implied. See the License for the specific language governing
     12  * permissions and limitations under the License.
     13  */
     14 
     15 package com.android.settings;
     16 
     17 import android.content.Context;
     18 import android.support.v7.preference.Preference;
     19 import android.support.v7.preference.PreferenceViewHolder;
     20 import android.text.TextUtils;
     21 import android.util.AttributeSet;
     22 import android.view.View;
     23 import android.widget.ProgressBar;
     24 import android.widget.TextView;
     25 
     26 /**
     27  * Provides a summary of a setting page in a preference.  Such as memory or data usage.
     28  */
     29 public class SummaryPreference extends Preference {
     30 
     31     private static final String TAG = "SummaryPreference";
     32     private String mAmount;
     33     private String mUnits;
     34 
     35     private boolean mChartEnabled = true;
     36     private float mLeftRatio, mMiddleRatio, mRightRatio;
     37     private String mStartLabel;
     38     private String mEndLabel;
     39 
     40     public SummaryPreference(Context context, AttributeSet attrs) {
     41         super(context, attrs);
     42         setLayoutResource(R.layout.settings_summary_preference);
     43     }
     44 
     45     public void setChartEnabled(boolean enabled) {
     46         if (mChartEnabled != enabled) {
     47             mChartEnabled = enabled;
     48             notifyChanged();
     49         }
     50     }
     51 
     52     public void setAmount(String amount) {
     53         mAmount = amount;
     54         if (mAmount != null && mUnits != null) {
     55             setTitle(TextUtils.expandTemplate(getContext().getText(R.string.storage_size_large),
     56                     mAmount, mUnits));
     57         }
     58     }
     59 
     60     public void setUnits(String units) {
     61         mUnits = units;
     62         if (mAmount != null && mUnits != null) {
     63             setTitle(TextUtils.expandTemplate(getContext().getText(R.string.storage_size_large),
     64                     mAmount, mUnits));
     65         }
     66     }
     67 
     68     public void setLabels(String start, String end) {
     69         mStartLabel = start;
     70         mEndLabel = end;
     71         notifyChanged();
     72     }
     73 
     74     public void setRatios(float left, float middle, float right) {
     75         mLeftRatio = left;
     76         mMiddleRatio = middle;
     77         mRightRatio = right;
     78         notifyChanged();
     79     }
     80 
     81     @Override
     82     public void onBindViewHolder(PreferenceViewHolder holder) {
     83         super.onBindViewHolder(holder);
     84 
     85         final ProgressBar colorBar = holder.itemView.findViewById(R.id.color_bar);
     86 
     87         if (mChartEnabled) {
     88             colorBar.setVisibility(View.VISIBLE);
     89             int progress = (int) (mLeftRatio * 100);
     90             colorBar.setProgress(progress);
     91             colorBar.setSecondaryProgress(progress + (int) (mMiddleRatio * 100));
     92         } else {
     93             colorBar.setVisibility(View.GONE);
     94         }
     95 
     96         if (mChartEnabled && (!TextUtils.isEmpty(mStartLabel) || !TextUtils.isEmpty(mEndLabel))) {
     97             holder.findViewById(R.id.label_bar).setVisibility(View.VISIBLE);
     98             ((TextView) holder.findViewById(android.R.id.text1)).setText(mStartLabel);
     99             ((TextView) holder.findViewById(android.R.id.text2)).setText(mEndLabel);
    100         } else {
    101             holder.findViewById(R.id.label_bar).setVisibility(View.GONE);
    102         }
    103     }
    104 }
    105