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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 
     17 package com.example.android.apprestrictionenforcer;
     18 
     19 import android.content.Context;
     20 import android.os.Bundle;
     21 import android.support.annotation.Nullable;
     22 import android.support.v4.app.DialogFragment;
     23 import android.support.v4.app.Fragment;
     24 import android.text.TextUtils;
     25 import android.view.LayoutInflater;
     26 import android.view.View;
     27 import android.view.ViewGroup;
     28 import android.widget.EditText;
     29 import android.widget.Toast;
     30 
     31 /**
     32  * Provides a dialog to create a new restriction item for the sample bundle array.
     33  */
     34 public class ItemAddFragment extends DialogFragment implements View.OnClickListener {
     35 
     36     public interface OnItemAddedListener {
     37         void onItemAdded(String key, String value);
     38     }
     39 
     40     private OnItemAddedListener mListener;
     41     private EditText mEditKey;
     42     private EditText mEditValue;
     43 
     44     @Override
     45     public void onAttach(Context context) {
     46         super.onAttach(context);
     47         Fragment parentFragment = getParentFragment();
     48         mListener = (OnItemAddedListener) (parentFragment == null ? context : parentFragment);
     49     }
     50 
     51     @Override
     52     public void onDetach() {
     53         mListener = null;
     54         super.onDetach();
     55     }
     56 
     57     @Nullable
     58     @Override
     59     public View onCreateView(LayoutInflater inflater, ViewGroup container,
     60                              Bundle savedInstanceState) {
     61         getDialog().setTitle(R.string.add_item);
     62         return inflater.inflate(R.layout.fragment_item_add, container, false);
     63     }
     64 
     65     @Override
     66     public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
     67         mEditKey = (EditText) view.findViewById(R.id.key);
     68         mEditValue = (EditText) view.findViewById(R.id.value);
     69         view.findViewById(R.id.ok).setOnClickListener(this);
     70     }
     71 
     72     @Override
     73     public void onClick(View v) {
     74         switch (v.getId()) {
     75             case R.id.ok:
     76                 if (addItem()) {
     77                     dismiss();
     78                 }
     79                 break;
     80         }
     81     }
     82 
     83     private boolean addItem() {
     84         String key = mEditKey.getText().toString();
     85         if (TextUtils.isEmpty(key)) {
     86             Toast.makeText(getActivity(), "Input the key.", Toast.LENGTH_SHORT).show();
     87             return false;
     88         }
     89         String value = mEditValue.getText().toString();
     90         if (TextUtils.isEmpty(value)) {
     91             Toast.makeText(getActivity(), "Input the value.", Toast.LENGTH_SHORT).show();
     92             return false;
     93         }
     94         if (mListener != null) {
     95             mListener.onItemAdded(key, value);
     96         }
     97         return true;
     98     }
     99 
    100 }
    101