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      1 /*
      2  * Copyright (C) 2012 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.keyguard;
     18 
     19 import android.content.Context;
     20 import android.content.res.TypedArray;
     21 import android.text.TextUtils;
     22 import android.text.method.SingleLineTransformationMethod;
     23 import android.util.AttributeSet;
     24 import android.view.View;
     25 import android.widget.TextView;
     26 
     27 import java.util.Locale;
     28 
     29 public class CarrierText extends TextView {
     30     private static final boolean DEBUG = KeyguardConstants.DEBUG;
     31     private static final String TAG = "CarrierText";
     32 
     33     private static CharSequence mSeparator;
     34 
     35     private boolean mShowMissingSim;
     36 
     37     private boolean mShowAirplaneMode;
     38     private boolean mShouldMarquee;
     39 
     40     private CarrierTextController mCarrierTextController;
     41 
     42     private CarrierTextController.CarrierTextCallback mCarrierTextCallback =
     43             new CarrierTextController.CarrierTextCallback() {
     44                 @Override
     45                 public void updateCarrierInfo(CarrierTextController.CarrierTextCallbackInfo info) {
     46                     setText(info.carrierText);
     47                 }
     48 
     49                 @Override
     50                 public void startedGoingToSleep() {
     51                     setSelected(false);
     52                 }
     53 
     54                 @Override
     55                 public void finishedWakingUp() {
     56                     setSelected(true);
     57                 }
     58             };
     59 
     60     public CarrierText(Context context) {
     61         this(context, null);
     62     }
     63 
     64     public CarrierText(Context context, AttributeSet attrs) {
     65         super(context, attrs);
     66         boolean useAllCaps;
     67         TypedArray a = context.getTheme().obtainStyledAttributes(
     68                 attrs, R.styleable.CarrierText, 0, 0);
     69         try {
     70             useAllCaps = a.getBoolean(R.styleable.CarrierText_allCaps, false);
     71             mShowAirplaneMode = a.getBoolean(R.styleable.CarrierText_showAirplaneMode, false);
     72             mShowMissingSim = a.getBoolean(R.styleable.CarrierText_showMissingSim, false);
     73         } finally {
     74             a.recycle();
     75         }
     76         setTransformationMethod(new CarrierTextTransformationMethod(mContext, useAllCaps));
     77     }
     78 
     79     @Override
     80     protected void onFinishInflate() {
     81         super.onFinishInflate();
     82         mSeparator = getResources().getString(
     83                 com.android.internal.R.string.kg_text_message_separator);
     84         mCarrierTextController = new CarrierTextController(mContext, mSeparator, mShowAirplaneMode,
     85                 mShowMissingSim);
     86         mShouldMarquee = KeyguardUpdateMonitor.getInstance(mContext).isDeviceInteractive();
     87         setSelected(mShouldMarquee); // Allow marquee to work.
     88     }
     89 
     90     @Override
     91     protected void onAttachedToWindow() {
     92         super.onAttachedToWindow();
     93         mCarrierTextController.setListening(mCarrierTextCallback);
     94     }
     95 
     96     @Override
     97     protected void onDetachedFromWindow() {
     98         super.onDetachedFromWindow();
     99         mCarrierTextController.setListening(null);
    100     }
    101 
    102     @Override
    103     protected void onVisibilityChanged(View changedView, int visibility) {
    104         super.onVisibilityChanged(changedView, visibility);
    105         // Only show marquee when visible
    106         if (visibility == VISIBLE) {
    107             setEllipsize(TextUtils.TruncateAt.MARQUEE);
    108         } else {
    109             setEllipsize(TextUtils.TruncateAt.END);
    110         }
    111     }
    112 
    113     private class CarrierTextTransformationMethod extends SingleLineTransformationMethod {
    114         private final Locale mLocale;
    115         private final boolean mAllCaps;
    116 
    117         public CarrierTextTransformationMethod(Context context, boolean allCaps) {
    118             mLocale = context.getResources().getConfiguration().locale;
    119             mAllCaps = allCaps;
    120         }
    121 
    122         @Override
    123         public CharSequence getTransformation(CharSequence source, View view) {
    124             source = super.getTransformation(source, view);
    125 
    126             if (mAllCaps && source != null) {
    127                 source = source.toString().toUpperCase(mLocale);
    128             }
    129 
    130             return source;
    131         }
    132     }
    133 }
    134