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      1 /*
      2  * Copyright (C) 2015 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 package com.android.car.dialer;
     17 
     18 import android.os.Bundle;
     19 import android.support.v4.app.Fragment;
     20 import android.text.TextUtils;
     21 import android.view.LayoutInflater;
     22 import android.view.View;
     23 import android.view.ViewGroup;
     24 import android.widget.TextView;
     25 
     26 /**
     27  * A fragment that informs the user that there is no bluetooth device attached that can make
     28  * phone calls.
     29  */
     30 public class NoHfpFragment extends Fragment {
     31     private static final String ERROR_MESSAGE_KEY = "ERROR_MESSAGE_KEY";
     32 
     33     private TextView mErrorMessageView;
     34     private String mErrorMessage;
     35 
     36     /**
     37      * Returns an instance of the {@link NoHfpFragment} with the given error message as the one to
     38      * display.
     39      */
     40     static NoHfpFragment newInstance(String errorMessage) {
     41         NoHfpFragment fragment = new NoHfpFragment();
     42 
     43         Bundle args = new Bundle();
     44         args.putString(ERROR_MESSAGE_KEY, errorMessage);
     45         fragment.setArguments(args);
     46 
     47         return fragment;
     48     }
     49 
     50     public void onCreate(Bundle savedInstanceState) {
     51         super.onCreate(savedInstanceState);
     52 
     53         Bundle args = getArguments();
     54         if (args != null) {
     55             mErrorMessage = args.getString(ERROR_MESSAGE_KEY);
     56         }
     57     }
     58 
     59     /**
     60      * Sets the given error message to be displayed.
     61      */
     62     void setErrorMessage(String errorMessage) {
     63         mErrorMessage = errorMessage;
     64 
     65         // If this method is called before the error message view is available, then no need to
     66         // set the message. Instead, it will be set in onCreateView().
     67         if (mErrorMessageView != null && !TextUtils.isEmpty(mErrorMessage)) {
     68             mErrorMessageView.setText(mErrorMessage);
     69         }
     70     }
     71 
     72     @Override
     73     public View onCreateView(LayoutInflater inflater, ViewGroup container,
     74             Bundle savedInstanceState) {
     75         View v = inflater.inflate(R.layout.no_hfp, container, false);
     76         mErrorMessageView = v.findViewById(R.id.error_string);
     77 
     78         // If no error message is set, the default string from the layout will be used.
     79         if (!TextUtils.isEmpty(mErrorMessage)) {
     80             mErrorMessageView.setText(mErrorMessage);
     81         }
     82 
     83         return v;
     84     }
     85 }
     86