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      1 /*
      2  * Copyright (C) 2010 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.contacts.interactions;
     17 
     18 import android.app.AlertDialog;
     19 import android.app.Dialog;
     20 import android.app.DialogFragment;
     21 import android.content.DialogInterface;
     22 import android.content.DialogInterface.OnShowListener;
     23 import android.os.Bundle;
     24 import android.text.Editable;
     25 import android.text.TextUtils;
     26 import android.text.TextWatcher;
     27 import android.view.LayoutInflater;
     28 import android.view.View;
     29 import android.view.WindowManager;
     30 import android.widget.Button;
     31 import android.widget.EditText;
     32 
     33 import com.android.contacts.R;
     34 
     35 /**
     36  * A common superclass for creating and renaming groups.
     37  */
     38 public abstract class GroupNameDialogFragment extends DialogFragment {
     39     protected abstract int getTitleResourceId();
     40     protected abstract void initializeGroupLabelEditText(EditText editText);
     41     protected abstract void onCompleted(String groupLabel);
     42 
     43     @Override
     44     public Dialog onCreateDialog(Bundle savedInstanceState) {
     45         final AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
     46         final LayoutInflater layoutInflater = LayoutInflater.from(builder.getContext());
     47         final View view = layoutInflater.inflate(R.layout.group_name_dialog, null);
     48         final EditText editText = (EditText) view.findViewById(R.id.group_label);
     49         initializeGroupLabelEditText(editText);
     50 
     51         builder.setTitle(getTitleResourceId());
     52         builder.setView(view);
     53         editText.requestFocus();
     54         builder.setPositiveButton(android.R.string.ok,
     55                 new DialogInterface.OnClickListener() {
     56                     @Override
     57                     public void onClick(DialogInterface dialogInterface, int whichButton) {
     58                         onCompleted(editText.getText().toString().trim());
     59                     }
     60                 }
     61             );
     62 
     63         builder.setNegativeButton(android.R.string.cancel, null);
     64         final AlertDialog dialog = builder.create();
     65 
     66         dialog.setOnShowListener(new OnShowListener() {
     67             @Override
     68             public void onShow(DialogInterface dialogInterface) {
     69                 updateOkButtonState(dialog, editText);
     70             }
     71         });
     72         editText.addTextChangedListener(new TextWatcher() {
     73             @Override
     74             public void onTextChanged(CharSequence s, int start, int before, int count) {
     75             }
     76 
     77             @Override
     78             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
     79             }
     80 
     81             @Override
     82             public void afterTextChanged(Editable s) {
     83                 updateOkButtonState(dialog, editText);
     84             }
     85         });
     86         dialog.getWindow().setSoftInputMode(
     87                 WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
     88         return dialog;
     89     }
     90 
     91     /* package */ void updateOkButtonState(AlertDialog dialog, EditText editText) {
     92         final Button okButton = dialog.getButton(AlertDialog.BUTTON_POSITIVE);
     93         okButton.setEnabled(!TextUtils.isEmpty(editText.getText().toString().trim()));
     94     }
     95 }
     96