app/src/main/java/com/stoutner/privacybrowser/activities/DomainsActivity.java

   1 /*
   2  * Copyright 2017 Soren Stoutner <soren@stoutner.com>.
   3  *
   4  * This file is part of Privacy Browser <https://www.stoutner.com/privacy-browser>.
   5  *
   6  * Privacy Browser is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Privacy Browser is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with Privacy Browser.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 package com.stoutner.privacybrowser.activities;
  21
  22 import android.content.Context;
  23 import android.content.Intent;
  24 import android.database.Cursor;
  25 import android.os.Bundle;
  26 import android.support.design.widget.FloatingActionButton;
  27 import android.support.design.widget.Snackbar;
  28 import android.support.v4.app.NavUtils;
  29 import android.support.v7.app.ActionBar;
  30 import android.support.v7.app.AppCompatActivity;
  31 import android.support.v7.app.AppCompatDialogFragment;
  32 import android.support.v7.widget.Toolbar;
  33 import android.view.Menu;
  34 import android.view.MenuItem;
  35 import android.view.View;
  36 import android.view.ViewGroup;
  37 import android.widget.AdapterView;
  38 import android.widget.CursorAdapter;
  39 import android.widget.EditText;
  40 import android.widget.ListView;
  41 import android.widget.Spinner;
  42 import android.widget.Switch;
  43 import android.widget.TextView;
  44
  45 import com.stoutner.privacybrowser.R;
  46 import com.stoutner.privacybrowser.dialogs.AddDomainDialog;
  47 import com.stoutner.privacybrowser.fragments.DomainSettingsFragment;
  48 import com.stoutner.privacybrowser.helpers.DomainsDatabaseHelper;
  49
  50 public class DomainsActivity extends AppCompatActivity implements AddDomainDialog.AddDomainListener {
  51     // `context` is used in `onCreate()` and `onOptionsItemSelected()`.
  52     private Context context;
  53
  54     // `domainsDatabaseHelper` is used in `onCreate()`, `onOptionsItemSelected()`, `onAddDomain()`, and `updateDomainsRecyclerView()`.
  55     private static DomainsDatabaseHelper domainsDatabaseHelper;
  56
  57     // `twoPaneMode` is used in `onCreate()` and `updateDomainsListView()`.
  58     private boolean twoPaneMode;
  59
  60     // `domainsListView` is used in `onCreate()`, `onOptionsItemSelected()`, and `updateDomainsListView()`.
  61     private ListView domainsListView;
  62
  63     // `databaseId` is used in `onCreate()` and `onOptionsItemSelected()`.
  64     private int databaseId;
  65
  66     // `saveMenuItem` is used in `onCreate()`, `onOptionsItemSelected()`, and `onCreateOptionsMenu()`.
  67     private MenuItem saveMenuItem;
  68
  69     // `deleteMenuItem` is used in `onCreate()`, `onOptionsItemSelected()`, and `onCreateOptionsMenu()`.
  70     private MenuItem deleteMenuItem;
  71
  72     @Override
  73     protected void onCreate(Bundle savedInstanceState) {
  74         super.onCreate(savedInstanceState);
  75         setContentView(R.layout.domains_coordinatorlayout);
  76
  77         // Get a handle for the context.
  78         context = this;
  79
  80         // We need to use the `SupportActionBar` from `android.support.v7.app.ActionBar` until the minimum API is >= 21.
  81         final Toolbar bookmarksAppBar = (Toolbar) findViewById(R.id.domains_toolbar);
  82         setSupportActionBar(bookmarksAppBar);
  83
  84         // Display the home arrow on `SupportActionBar`.
  85         ActionBar appBar = getSupportActionBar();
  86         assert appBar != null;// This assert removes the incorrect warning in Android Studio on the following line that `appBar` might be null.
  87         appBar.setDisplayHomeAsUpEnabled(true);
  88
  89         // Initialize the database handler.  `this` specifies the context.  The two `nulls` do not specify the database name or a `CursorFactory`.
  90         // The `0` specifies the database version, but that is ignored and set instead using a constant in `DomainsDatabaseHelper`.
  91         domainsDatabaseHelper = new DomainsDatabaseHelper(this, null, null, 0);
  92
  93         // Determine if we are in two pane mode.  `domains_settings_linearlayout` is only populated if two panes are present.
  94         twoPaneMode = ((findViewById(R.id.domain_settings_scrollview)) != null);
  95
  96         // Initialize `domainsListView`.
  97         domainsListView = (ListView) findViewById(R.id.domains_listview);
  98
  99         domainsListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
 100             @Override
 101             public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
 102                 // Convert the id from `long` to `int` to match the format of the domains database.
 103                 databaseId = (int) id;
 104
 105                 // Display the Domain Settings.
 106                 if (twoPaneMode) {  // Display a fragment in two paned mode.
 107                     // Enable the options `MenuItems`.
 108                     saveMenuItem.setEnabled(true);
 109                     deleteMenuItem.setEnabled(true);
 110
 111                     // Store `databaseId` in `argumentsBundle`.
 112                     Bundle argumentsBundle = new Bundle();
 113                     argumentsBundle.putInt(DomainSettingsFragment.DATABASE_ID, databaseId);
 114
 115                     // Add `argumentsBundle` to `domainSettingsFragment`.
 116                     DomainSettingsFragment domainSettingsFragment = new DomainSettingsFragment();
 117                     domainSettingsFragment.setArguments(argumentsBundle);
 118
 119                     // Display `domainSettingsFragment`.
 120                     getSupportFragmentManager().beginTransaction().replace(R.id.domain_settings_scrollview, domainSettingsFragment).commit();
 121
 122                     // Enable the options `MenuItems`.
 123                     deleteMenuItem.setEnabled(true);
 124                     deleteMenuItem.setIcon(R.drawable.delete);
 125                     saveMenuItem.setEnabled(true);
 126                 } else { // Load the second activity on smaller screens.
 127                     // Create `domainSettingsActivityIntent` with the `databaseId`.
 128                     Intent domainSettingsActivityIntent = new Intent(context, DomainSettingsActivity.class);
 129                     domainSettingsActivityIntent.putExtra(DomainSettingsFragment.DATABASE_ID, databaseId);
 130
 131                     // Start `DomainSettingsActivity`.
 132                     context.startActivity(domainSettingsActivityIntent);
 133                 }
 134             }
 135         });
 136
 137         FloatingActionButton addDomainFAB = (FloatingActionButton) findViewById(R.id.add_domain_fab);
 138         addDomainFAB.setOnClickListener(new View.OnClickListener() {
 139             @Override
 140             public void onClick(View view) {
 141                 // Show the `AddDomainDialog` `AlertDialog` and name the instance `@string/add_domain`.
 142                 AppCompatDialogFragment addDomainDialog = new AddDomainDialog();
 143                 addDomainDialog.show(getSupportFragmentManager(), getResources().getString(R.string.add_domain));
 144             }
 145         });
 146     }
 147
 148     @Override
 149     public boolean onCreateOptionsMenu(Menu menu) {
 150         // Inflate the menu.
 151         getMenuInflater().inflate(R.menu.domains_options_menu, menu);
 152
 153         // Store the `MenuItems` for future use.
 154         deleteMenuItem = menu.findItem(R.id.delete_domain);
 155         saveMenuItem = menu.findItem(R.id.save_domain);
 156
 157         // Only display the options `MenuItems` in two pane mode.
 158         deleteMenuItem.setVisible(twoPaneMode);
 159         saveMenuItem.setVisible(twoPaneMode);
 160
 161         // Load the `ListView`.  We have to do this from `onCreateOptionsMenu()` instead of `onCreate()` because `updateDomainsListView()` needs the `MenuItems` to be inflated.
 162         updateDomainsListView();
 163
 164         // Success!
 165         return true;
 166     }
 167
 168     @Override
 169     public boolean onOptionsItemSelected(MenuItem menuItem) {
 170         // Get the ID of the `MenuItem` that was selected.
 171         int menuItemID = menuItem.getItemId();
 172
 173         switch (menuItemID) {
 174             case android.R.id.home:  // The home arrow is identified as `android.R.id.home`, not just `R.id.home`.
 175                 // Go home.
 176                 NavUtils.navigateUpFromSameTask(this);
 177                 break;
 178
 179             case R.id.save_domain:
 180                 // Get handles for the domain settings.
 181                 EditText domainNameEditText = (EditText) findViewById(R.id.domain_settings_name_edittext);
 182                 Switch javaScriptEnabledSwitch = (Switch) findViewById(R.id.domain_settings_javascript_switch);
 183                 Switch firstPartyCookiesEnabledSwitch = (Switch) findViewById(R.id.domain_settings_first_party_cookies_switch);
 184                 Switch thirdPartyCookiesEnabledSwitch = (Switch) findViewById(R.id.domain_settings_third_party_cookies_switch);
 185                 Switch domStorageEnabledSwitch = (Switch) findViewById(R.id.domain_settings_dom_storage_switch);
 186                 Switch formDataEnabledSwitch = (Switch) findViewById(R.id.domain_settings_form_data_switch);
 187                 Spinner userAgentSpinner = (Spinner) findViewById(R.id.domain_settings_user_agent_spinner);
 188                 EditText customUserAgentEditText = (EditText) findViewById(R.id.domain_settings_custom_user_agent_edittext);
 189                 Spinner fontSizeSpinner = (Spinner) findViewById(R.id.domain_settings_font_size_spinner);
 190
 191                 // Extract the data for the domain settings.
 192                 String domainNameString = domainNameEditText.getText().toString();
 193                 boolean javaScriptEnabled = javaScriptEnabledSwitch.isChecked();
 194                 boolean firstPartyCookiesEnabled = firstPartyCookiesEnabledSwitch.isChecked();
 195                 boolean thirdPartyCookiesEnabled = thirdPartyCookiesEnabledSwitch.isChecked();
 196                 boolean domStorageEnabledEnabled = domStorageEnabledSwitch.isChecked();
 197                 boolean formDataEnabled = formDataEnabledSwitch.isChecked();
 198                 int userAgentPosition = userAgentSpinner.getSelectedItemPosition();
 199                 int fontSizePosition = fontSizeSpinner.getSelectedItemPosition();
 200
 201                 // Get the data for the `Spinners` from the entry values string arrays.
 202                 String userAgentString = getResources().getStringArray(R.array.user_agent_entry_values)[userAgentPosition];
 203                 int fontSizeInt = Integer.parseInt(getResources().getStringArray(R.array.default_font_size_entry_values)[fontSizePosition]);
 204
 205                 // Check to see if we are using a custom user agent.
 206                 if (userAgentString.equals("Custom user agent")) {
 207                     // Set `userAgentString` to the custom user agent string.
 208                     userAgentString = customUserAgentEditText.getText().toString();
 209                 }
 210
 211                 // Save the domain settings.
 212                 domainsDatabaseHelper.saveDomain(databaseId, domainNameString, javaScriptEnabled, firstPartyCookiesEnabled, thirdPartyCookiesEnabled, domStorageEnabledEnabled, formDataEnabled, userAgentString, fontSizeInt);
 213
 214                 // Display a `Snackbar`.
 215                 Snackbar.make(domainsListView, R.string.domain_settings_saved, Snackbar.LENGTH_SHORT).show();
 216
 217                 // update the domains `ListView`.
 218                 updateDomainsListView();
 219                 break;
 220
 221             case R.id.delete_domain:
 222                 // Save the `ListView` `currentPosition`.
 223                 final int currentPosition = domainsListView.getCheckedItemPosition();
 224
 225                 // Get a `Cursor` that does not show the domain to be deleted.
 226                 Cursor domainsPendingDeleteCursor = domainsDatabaseHelper.getDomainNameCursorOrderedByDomainExcept(databaseId);
 227
 228                 // Setup `domainsPendingDeleteCursorAdapter` with `this` context.  `false` disables `autoRequery`.
 229                 CursorAdapter domainsPendingDeleteCursorAdapter = new CursorAdapter(this, domainsPendingDeleteCursor, false) {
 230                     @Override
 231                     public View newView(Context context, Cursor cursor, ViewGroup parent) {
 232                         // Inflate the individual item layout.  `false` does not attach it to the root.
 233                         return getLayoutInflater().inflate(R.layout.domain_name_linearlayout, parent, false);
 234                     }
 235
 236                     @Override
 237                     public void bindView(View view, Context context, Cursor cursor) {
 238                         // Set the domain name.
 239                         String domainNameString = cursor.getString(cursor.getColumnIndex(DomainsDatabaseHelper.DOMAIN_NAME));
 240                         TextView domainNameTextView = (TextView) view.findViewById(R.id.domain_name_textview);
 241                         domainNameTextView.setText(domainNameString);
 242                     }
 243                 };
 244
 245                 // Update the `ListView`.
 246                 domainsListView.setAdapter(domainsPendingDeleteCursorAdapter);
 247
 248                 // Detach the domain settings `Fragment`.
 249                 getSupportFragmentManager().beginTransaction().detach(getSupportFragmentManager().findFragmentById(R.id.domain_settings_scrollview)).commit();
 250
 251                 // Disable the options `MenuItems`.
 252                 deleteMenuItem.setEnabled(false);
 253                 deleteMenuItem.setIcon(R.drawable.delete_blue);
 254                 saveMenuItem.setEnabled(false);
 255
 256                 // Display a `Snackbar`.
 257                 Snackbar.make(domainsListView, R.string.domain_deleted, Snackbar.LENGTH_LONG)
 258                         .setAction(R.string.undo, new View.OnClickListener() {
 259                             @Override
 260                             public void onClick(View v) {
 261                                 // Do nothing because everything will be handled by `onDismissed()` below.
 262                             }
 263                         })
 264                         .addCallback(new Snackbar.Callback() {
 265                             @Override
 266                             public void onDismissed(Snackbar snackbar, int event) {
 267                                 switch (event) {
 268                                     // The user pushed the `Undo` button.
 269                                     case Snackbar.Callback.DISMISS_EVENT_ACTION:
 270                                         // Get a `Cursor` with the current contents of the domains database.
 271                                         Cursor undoDeleteDomainsCursor = domainsDatabaseHelper.getDomainNameCursorOrderedByDomain();
 272
 273                                         // Setup `domainsCursorAdapter` with `this` context.  `false` disables `autoRequery`.
 274                                         CursorAdapter undoDeleteDomainsCursorAdapter = new CursorAdapter(context, undoDeleteDomainsCursor, false) {
 275                                             @Override
 276                                             public View newView(Context context, Cursor cursor, ViewGroup parent) {
 277                                                 // Inflate the individual item layout.  `false` does not attach it to the root.
 278                                                 return getLayoutInflater().inflate(R.layout.domain_name_linearlayout, parent, false);
 279                                             }
 280
 281                                             @Override
 282                                             public void bindView(View view, Context context, Cursor cursor) {
 283                                                 // Set the domain name.
 284                                                 String domainNameString = cursor.getString(cursor.getColumnIndex(DomainsDatabaseHelper.DOMAIN_NAME));
 285                                                 TextView domainNameTextView = (TextView) view.findViewById(R.id.domain_name_textview);
 286                                                 domainNameTextView.setText(domainNameString);
 287                                             }
 288                                         };
 289
 290                                         // Update the `ListView`.
 291                                         domainsListView.setAdapter(undoDeleteDomainsCursorAdapter);
 292
 293                                         // Select the entry in the domain list at `currentPosition`.
 294                                         domainsListView.setItemChecked(currentPosition, true);
 295
 296                                         // Store `databaseId` in `argumentsBundle`.
 297                                         Bundle argumentsBundle = new Bundle();
 298                                         argumentsBundle.putInt(DomainSettingsFragment.DATABASE_ID, databaseId);
 299
 300                                         // Add `argumentsBundle` to `domainSettingsFragment`.
 301                                         DomainSettingsFragment domainSettingsFragment = new DomainSettingsFragment();
 302                                         domainSettingsFragment.setArguments(argumentsBundle);
 303
 304                                         // Display `domainSettingsFragment`.
 305                                         getSupportFragmentManager().beginTransaction().replace(R.id.domain_settings_scrollview, domainSettingsFragment).commit();
 306
 307                                         // Enable the options `MenuItems`.
 308                                         deleteMenuItem.setEnabled(true);
 309                                         deleteMenuItem.setIcon(R.drawable.delete);
 310                                         saveMenuItem.setEnabled(true);
 311                                         break;
 312
 313                                     // The `Snackbar` was dismissed without the `Undo` button being pushed.
 314                                     default:
 315                                         // Delete the selected domain.
 316                                         domainsDatabaseHelper.deleteDomain(databaseId);
 317                                         break;
 318                                 }
 319                             }
 320                         })
 321                         .show();
 322                 break;
 323         }
 324
 325         // Consume the event.
 326         return true;
 327     }
 328
 329     @Override
 330     public void onAddDomain(AppCompatDialogFragment dialogFragment) {
 331         // Get the `domainNameEditText` from `dialogFragment` and extract the string.
 332         EditText domainNameEditText = (EditText) dialogFragment.getDialog().findViewById(R.id.domain_name_edittext);
 333         String domainNameString = domainNameEditText.getText().toString();
 334
 335         // Create the domain.
 336         domainsDatabaseHelper.addDomain(domainNameString);
 337
 338         // Refresh the `ListView`.
 339         updateDomainsListView();
 340     }
 341
 342     private void updateDomainsListView() {
 343         // Initialize `currentPosition`.
 344         int currentPosition;
 345
 346         // Store the current position of `domainsListView` if it is already populated.
 347         if (domainsListView.getCount() > 0){
 348             currentPosition = domainsListView.getCheckedItemPosition();
 349         } else {
 350             // Set `currentPosition` to 0;
 351             currentPosition = 0;
 352         }
 353
 354         // Get a `Cursor` with the current contents of the domains database.
 355         Cursor domainsCursor = domainsDatabaseHelper.getDomainNameCursorOrderedByDomain();
 356
 357         // Setup `domainsCursorAdapter` with `this` context.  `false` disables `autoRequery`.
 358         CursorAdapter domainsCursorAdapter = new CursorAdapter(this, domainsCursor, false) {
 359             @Override
 360             public View newView(Context context, Cursor cursor, ViewGroup parent) {
 361                 // Inflate the individual item layout.  `false` does not attach it to the root.
 362                 return getLayoutInflater().inflate(R.layout.domain_name_linearlayout, parent, false);
 363             }
 364
 365             @Override
 366             public void bindView(View view, Context context, Cursor cursor) {
 367                 // Set the domain name.
 368                 String domainNameString = cursor.getString(cursor.getColumnIndex(DomainsDatabaseHelper.DOMAIN_NAME));
 369                 TextView domainNameTextView = (TextView) view.findViewById(R.id.domain_name_textview);
 370                 domainNameTextView.setText(domainNameString);
 371             }
 372         };
 373
 374         // Update the `ListView`.
 375         domainsListView.setAdapter(domainsCursorAdapter);
 376
 377         // Display the domain settings in the second pane if operating in two pane mode and the database contains at least one domain.
 378         if (twoPaneMode && (domainsCursor.getCount() > 0)) {
 379             // Select the entry in the domain list at `currentPosition`.
 380             domainsListView.setItemChecked(currentPosition, true);
 381
 382             // Get the `databaseId` for `currentPosition`.
 383             domainsCursor.moveToPosition(currentPosition);
 384             databaseId = domainsCursor.getInt(domainsCursor.getColumnIndex(DomainsDatabaseHelper._ID));
 385
 386             // Store `databaseId` in `argumentsBundle`.
 387             Bundle argumentsBundle = new Bundle();
 388             argumentsBundle.putInt(DomainSettingsFragment.DATABASE_ID, databaseId);
 389
 390             // Add `argumentsBundle` to `domainSettingsFragment`.
 391             DomainSettingsFragment domainSettingsFragment = new DomainSettingsFragment();
 392             domainSettingsFragment.setArguments(argumentsBundle);
 393
 394             // Display `domainSettingsFragment`.
 395             getSupportFragmentManager().beginTransaction().replace(R.id.domain_settings_scrollview, domainSettingsFragment).commit();
 396
 397             // Enable the options `MenuItems`.
 398             deleteMenuItem.setEnabled(true);
 399             deleteMenuItem.setIcon(R.drawable.delete);
 400             saveMenuItem.setEnabled(true);
 401         } else {
 402             // Disable the options `MenuItems`.
 403             deleteMenuItem.setEnabled(false);
 404             deleteMenuItem.setIcon(R.drawable.delete_blue);
 405             saveMenuItem.setEnabled(false);
 406         }
 407     }
 408 }