content: /*
   * Copyright (C) 2017 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.example.android.autofill.service;
  
  import android.app.Activity;
  import android.content.Context;
  import android.content.Intent;
  import android.content.SharedPreferences;
  import android.os.Bundle;
  import android.support.annotation.Nullable;
  import android.support.v7.app.AppCompatActivity;
  import android.support.v7.widget.DividerItemDecoration;
  import android.support.v7.widget.RecyclerView;
  import android.view.LayoutInflater;
  import android.view.View;
  import android.view.ViewGroup;
  import android.widget.TextView;
  
  import com.example.android.autofill.service.data.DataCallback;
  import com.example.android.autofill.service.data.source.DefaultFieldTypesSource;
  import com.example.android.autofill.service.data.source.local.DefaultFieldTypesLocalJsonSource;
  import com.example.android.autofill.service.data.source.local.LocalAutofillDataSource;
  import com.example.android.autofill.service.data.source.local.dao.AutofillDao;
  import com.example.android.autofill.service.data.source.local.db.AutofillDatabase;
  import com.example.android.autofill.service.model.DatasetWithFilledAutofillFields;
  import com.example.android.autofill.service.model.FilledAutofillField;
  import com.example.android.autofill.service.util.AppExecutors;
  import com.google.gson.GsonBuilder;
  
  import java.util.List;
  
  import static android.support.v7.widget.LinearLayoutManager.VERTICAL;
  
  public class ManualFieldPickerActivity extends AppCompatActivity {
      private static final String EXTRA_DATASET_ID = "extra_dataset_id";
      public static final String EXTRA_SELECTED_FIELD_DATASET_ID = "selected_field_dataset_id";
      public static final String EXTRA_SELECTED_FIELD_TYPE_NAME = "selected_field_type_name";
  
      private LocalAutofillDataSource mLocalAutofillDataSource;
  
      private RecyclerView mRecyclerView;
      private TextView mListTitle;
      private DatasetWithFilledAutofillFields mDataset;
  
      public static Intent getIntent(Context originContext, String datasetId) {
          Intent intent = new Intent(originContext, ManualFieldPickerActivity.class);
          intent.putExtra(EXTRA_DATASET_ID, datasetId);
          return intent;
      }
  
      @Override
      protected void onCreate(@Nullable Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_field_picker);
          SharedPreferences sharedPreferences = getSharedPreferences(
                  LocalAutofillDataSource.SHARED_PREF_KEY, Context.MODE_PRIVATE);
          DefaultFieldTypesSource defaultFieldTypesSource =
                  DefaultFieldTypesLocalJsonSource.getInstance(getResources(),
                          new GsonBuilder().create());
          AutofillDao autofillDao = AutofillDatabase.getInstance(this,
                  defaultFieldTypesSource, new AppExecutors()).autofillDao();
          String datasetId = getIntent().getStringExtra(EXTRA_DATASET_ID);
          mRecyclerView = findViewById(R.id.fieldsList);
          mRecyclerView.addItemDecoration(new DividerItemDecoration(this, VERTICAL));
          mListTitle = findViewById(R.id.listTitle);
          mLocalAutofillDataSource = LocalAutofillDataSource.getInstance(sharedPreferences,
                  autofillDao, new AppExecutors());
          mLocalAutofillDataSource.getAutofillDatasetWithId(datasetId,
                  new DataCallback<DatasetWithFilledAutofillFields>() {
                      @Override
                      public void onLoaded(DatasetWithFilledAutofillFields dataset) {
                          mDataset = dataset;
                          if (mDataset != null) {
                              onLoadedDataset();
                          }
                      }
  
                      @Override
                      public void onDataNotAvailable(String msg, Object... params) {
  
                      }
                  });
      }
  
      public void onSelectedDataset(FilledAutofillField field) {
          Intent data = new Intent()
                  .putExtra(EXTRA_SELECTED_FIELD_DATASET_ID, field.getDatasetId())
                  .putExtra(EXTRA_SELECTED_FIELD_TYPE_NAME, field.getFieldTypeName());
          setResult(RESULT_OK, data);
          finish();
      }
  
      public void onLoadedDataset() {
          FieldsAdapter fieldsAdapter = new FieldsAdapter(this, mDataset.filledAutofillFields);
          mRecyclerView.setAdapter(fieldsAdapter);
          mListTitle.setText(getString(R.string.manual_data_picker_title,
                  mDataset.autofillDataset.getDatasetName()));
      }
  
      private static class FieldsAdapter extends RecyclerView.Adapter<FieldViewHolder> {
          private final Activity mActivity;
          private final List<FilledAutofillField> mFields;
  
          public FieldsAdapter(Activity activity, List<FilledAutofillField> fields) {
              mActivity = activity;
              mFields = fields;
          }
  
          @Override
          public FieldViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
              return new FieldViewHolder(LayoutInflater.from(parent.getContext())
                      .inflate(R.layout.dataset_field, parent, false), mActivity);
          }
  
          @Override
          public void onBindViewHolder(FieldViewHolder holder, int position) {
              FilledAutofillField field = mFields.get(position);
              holder.bind(field);
          }
  
          @Override
          public int getItemCount() {
              return mFields.size();
          }
      }
  
      private static class FieldViewHolder extends RecyclerView.ViewHolder {
          private final View mRootView;
          private final TextView mFieldTypeText;
          private final Activity mActivity;
  
          public FieldViewHolder(View itemView, Activity activity) {
              super(itemView);
              mRootView = itemView;
              mFieldTypeText = itemView.findViewById(R.id.fieldType);
              mActivity = activity;
          }
  
          public void bind(FilledAutofillField field) {
              mFieldTypeText.setText(field.getFieldTypeName());
              mRootView.setOnClickListener((view) -> {
                  ((ManualFieldPickerActivity) mActivity).onSelectedDataset(field);
              });
          }
      }
  }
  