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 */
16package com.android.contacts.interactions;
17
18import android.app.AlertDialog;
19import android.app.Dialog;
20import android.app.DialogFragment;
21import android.content.DialogInterface;
22import android.content.DialogInterface.OnShowListener;
23import android.os.Bundle;
24import android.text.Editable;
25import android.text.TextUtils;
26import android.text.TextWatcher;
27import android.view.LayoutInflater;
28import android.view.View;
29import android.view.WindowManager;
30import android.widget.Button;
31import android.widget.EditText;
32
33import com.android.contacts.R;
34
35/**
36 * A common superclass for creating and renaming groups.
37 */
38public 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