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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.TextView;
     24 import com.android.settings.applications.LinearColorBar;
     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 int mLeft, mMiddle, mRight;
     36     private boolean mColorsSet = false;
     37     private boolean mChartEnabled = true;
     38     private float mLeftRatio, mMiddleRatio, mRightRatio;
     39     private String mStartLabel;
     40     private String mEndLabel;
     41 
     42     public SummaryPreference(Context context, AttributeSet attrs) {
     43         super(context, attrs);
     44         setLayoutResource(R.layout.settings_summary_preference);
     45     }
     46 
     47     public void setChartEnabled(boolean enabled) {
     48         if (mChartEnabled != enabled) {
     49             mChartEnabled = enabled;
     50             notifyChanged();
     51         }
     52     }
     53 
     54     public void setAmount(String amount) {
     55         mAmount = amount;
     56         if (mAmount != null && mUnits != null) {
     57             setTitle(TextUtils.expandTemplate(getContext().getText(R.string.storage_size_large),
     58                     mAmount, mUnits));
     59         }
     60     }
     61 
     62     public void setUnits(String units) {
     63         mUnits = units;
     64         if (mAmount != null && mUnits != null) {
     65             setTitle(TextUtils.expandTemplate(getContext().getText(R.string.storage_size_large),
     66                     mAmount, mUnits));
     67         }
     68     }
     69 
     70     public void setLabels(String start, String end) {
     71         mStartLabel = start;
     72         mEndLabel = end;
     73         notifyChanged();
     74     }
     75 
     76     public void setRatios(float left, float middle, float right) {
     77         mLeftRatio = left;
     78         mMiddleRatio = middle;
     79         mRightRatio = right;
     80         notifyChanged();
     81     }
     82 
     83     public void setColors(int left, int middle, int right) {
     84         mLeft = left;
     85         mMiddle = middle;
     86         mRight = right;
     87         mColorsSet = true;
     88         notifyChanged();
     89     }
     90 
     91     @Override
     92     public void onBindViewHolder(PreferenceViewHolder holder) {
     93         super.onBindViewHolder(holder);
     94 
     95         LinearColorBar colorBar = (LinearColorBar) holder.itemView.findViewById(R.id.color_bar);
     96 
     97         if (mChartEnabled) {
     98             colorBar.setVisibility(View.VISIBLE);
     99             colorBar.setRatios(mLeftRatio, mMiddleRatio, mRightRatio);
    100             if (mColorsSet) {
    101                 colorBar.setColors(mLeft, mMiddle, mRight);
    102             }
    103         } else {
    104             colorBar.setVisibility(View.GONE);
    105         }
    106 
    107         if (mChartEnabled && (!TextUtils.isEmpty(mStartLabel) || !TextUtils.isEmpty(mEndLabel))) {
    108             holder.findViewById(R.id.label_bar).setVisibility(View.VISIBLE);
    109             ((TextView) holder.findViewById(android.R.id.text1)).setText(mStartLabel);
    110             ((TextView) holder.findViewById(android.R.id.text2)).setText(mEndLabel);
    111         } else {
    112             holder.findViewById(R.id.label_bar).setVisibility(View.GONE);
    113         }
    114     }
    115 }
    116