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      1 /*
      2  * Copyright (C) 2009 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.settings.fuelgauge;
     18 
     19 import android.content.Context;
     20 import android.graphics.drawable.ColorDrawable;
     21 import android.graphics.drawable.Drawable;
     22 import android.support.v7.preference.PreferenceViewHolder;
     23 import android.util.AttributeSet;
     24 import android.widget.TextView;
     25 
     26 import com.android.settings.R;
     27 import com.android.settings.Utils;
     28 import com.android.settings.widget.AppPreference;
     29 
     30 /**
     31  * Custom preference for displaying battery usage info as a bar and an icon on
     32  * the left for the subsystem/app type.
     33  *
     34  * The battery usage info could be usage percentage or usage time. The preference
     35  * won't show any icon if it is null.
     36  */
     37 public class PowerGaugePreference extends AppPreference {
     38 
     39     private BatteryEntry mInfo;
     40     private CharSequence mContentDescription;
     41     private CharSequence mProgress;
     42     private boolean mShowAnomalyIcon;
     43 
     44     public PowerGaugePreference(Context context, Drawable icon, CharSequence contentDescription,
     45             BatteryEntry info) {
     46         this(context, null, icon, contentDescription, info);
     47     }
     48 
     49     public PowerGaugePreference(Context context) {
     50         this(context, null, null, null, null);
     51     }
     52 
     53     public PowerGaugePreference(Context context, AttributeSet attrs) {
     54         this(context, attrs, null, null, null);
     55     }
     56 
     57     private PowerGaugePreference(Context context, AttributeSet attrs, Drawable icon,
     58             CharSequence contentDescription, BatteryEntry info) {
     59         super(context, attrs);
     60         setIcon(icon != null ? icon : new ColorDrawable(0));
     61         setWidgetLayoutResource(R.layout.preference_widget_summary);
     62         mInfo = info;
     63         mContentDescription = contentDescription;
     64         mShowAnomalyIcon = false;
     65     }
     66 
     67     public void setContentDescription(String name) {
     68         mContentDescription = name;
     69         notifyChanged();
     70     }
     71 
     72     public void setPercent(double percentOfTotal) {
     73         mProgress = Utils.formatPercentage(percentOfTotal, true);
     74         notifyChanged();
     75     }
     76 
     77     public String getPercent() {
     78         return mProgress.toString();
     79     }
     80 
     81     public void setSubtitle(CharSequence subtitle) {
     82         mProgress = subtitle;
     83         notifyChanged();
     84     }
     85 
     86     public CharSequence getSubtitle() {
     87         return mProgress;
     88     }
     89 
     90     public void shouldShowAnomalyIcon(boolean showAnomalyIcon) {
     91         mShowAnomalyIcon = showAnomalyIcon;
     92         notifyChanged();
     93     }
     94 
     95     public boolean showAnomalyIcon() {
     96         return mShowAnomalyIcon;
     97     }
     98 
     99     BatteryEntry getInfo() {
    100         return mInfo;
    101     }
    102 
    103     @Override
    104     public void onBindViewHolder(PreferenceViewHolder view) {
    105         super.onBindViewHolder(view);
    106 
    107         final TextView subtitle = (TextView) view.findViewById(R.id.widget_summary);
    108         subtitle.setText(mProgress);
    109         if (mShowAnomalyIcon) {
    110             subtitle.setCompoundDrawablesRelativeWithIntrinsicBounds(R.drawable.ic_warning_24dp, 0,
    111                     0, 0);
    112         } else {
    113             subtitle.setCompoundDrawablesRelativeWithIntrinsicBounds(0, 0, 0, 0);
    114         }
    115         if (mContentDescription != null) {
    116             final TextView titleView = (TextView) view.findViewById(android.R.id.title);
    117             titleView.setContentDescription(mContentDescription);
    118         }
    119     }
    120 }
    121