ios/chrome/browser/ui/settings/google_services_settings_view_controller.mm

// Copyright 2018 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#import "ios/chrome/browser/ui/settings/google_services_settings_view_controller.h"

#include "base/mac/foundation_util.h"
#import "ios/chrome/browser/ui/settings/cells/settings_switch_cell.h"
#import "ios/chrome/browser/ui/settings/cells/sync_switch_item.h"
#import "ios/chrome/browser/ui/settings/google_services_settings_service_delegate.h"
#import "ios/chrome/browser/ui/settings/google_services_settings_view_controller_model_delegate.h"
#include "ios/chrome/grit/ios_strings.h"
#include "ui/base/l10n/l10n_util_mac.h"

#if !defined(__has_feature) || !__has_feature(objc_arc)
#error "This file requires ARC support."
#endif

namespace {

// Constants used to convert NSIndexPath into a tag. Used as:
// item + section * kSectionOffset
constexpr NSInteger kSectionOffset = 1000;

}  // namespace

@implementation GoogleServicesSettingsViewController

- (void)viewDidLoad {
  [super viewDidLoad];
  self.tableView.accessibilityIdentifier =
      @"google_services_settings_view_controller";
  self.title = l10n_util::GetNSString(IDS_IOS_GOOGLE_SERVICES_SETTINGS_TITLE);
}

#pragma mark - Private

- (NSInteger)tagForIndexPath:(NSIndexPath*)indexPath {
  return indexPath.item + indexPath.section * kSectionOffset;
}

- (NSIndexPath*)indexPathForTag:(NSInteger)tag {
  NSInteger section = tag / kSectionOffset;
  NSInteger item = tag - (section * kSectionOffset);
  return [NSIndexPath indexPathForItem:item inSection:section];
}

- (void)switchAction:(UISwitch*)sender {
  NSIndexPath* indexPath = [self indexPathForTag:sender.tag];
  SyncSwitchItem* syncSwitchItem = base::mac::ObjCCastStrict<SyncSwitchItem>(
      [self.tableViewModel itemAtIndexPath:indexPath]);
  [self.serviceDelegate toggleSwitchItem:syncSwitchItem withValue:sender.isOn];
}

#pragma mark - UITableViewDataSource

- (UITableViewCell*)tableView:(UITableView*)tableView
        cellForRowAtIndexPath:(NSIndexPath*)indexPath {
  UITableViewCell* cell = [super tableView:tableView
                     cellForRowAtIndexPath:indexPath];
  if ([cell isKindOfClass:[SettingsSwitchCell class]]) {
    SettingsSwitchCell* switchCell =
        base::mac::ObjCCastStrict<SettingsSwitchCell>(cell);
    [switchCell.switchView addTarget:self
                              action:@selector(switchAction:)
                    forControlEvents:UIControlEventValueChanged];
    switchCell.switchView.tag = [self tagForIndexPath:indexPath];
  }
  return cell;
}

#pragma mark - GoogleServicesSettingsConsumer

- (void)insertSections:(NSIndexSet*)sections {
  if (!self.tableViewModel) {
    // No need to reload since the model has not been loaded yet.
    return;
  }
  [self.tableView insertSections:sections
                withRowAnimation:UITableViewRowAnimationNone];
}

- (void)deleteSections:(NSIndexSet*)sections {
  if (!self.tableViewModel) {
    // No need to reload since the model has not been loaded yet.
    return;
  }
  [self.tableView deleteSections:sections
                withRowAnimation:UITableViewRowAnimationNone];
}

- (void)reloadSections:(NSIndexSet*)sections {
  if (!self.tableViewModel) {
    // No need to reload since the model has not been loaded yet.
    return;
  }
  [self.tableView reloadSections:sections
                withRowAnimation:UITableViewRowAnimationNone];
}

- (void)reloadItem:(TableViewItem*)item {
  if (!self.tableViewModel) {
    // No need to reload since the model has not been loaded yet.
    return;
  }
  NSIndexPath* indexPath = [self.tableViewModel indexPathForItem:item];
  [self.tableView reloadRowsAtIndexPaths:@[ indexPath ]
                        withRowAnimation:UITableViewRowAnimationNone];
}

#pragma mark - CollectionViewController

- (void)loadModel {
  [super loadModel];
  [self.modelDelegate googleServicesSettingsViewControllerLoadModel:self];
}

#pragma mark - UIViewController

- (void)viewWillAppear:(BOOL)animated {
  [super viewWillAppear:animated];
  [self reloadData];
}

- (void)didMoveToParentViewController:(UIViewController*)parent {
  [super didMoveToParentViewController:parent];
  if (!parent) {
    [self.presentationDelegate
        googleServicesSettingsViewControllerDidRemove:self];
  }
}

#pragma mark - UITableViewDelegate

- (void)tableView:(UITableView*)tableView
    didSelectRowAtIndexPath:(NSIndexPath*)indexPath {
  [super tableView:tableView didSelectRowAtIndexPath:indexPath];
  TableViewItem* item = [self.tableViewModel itemAtIndexPath:indexPath];
  [self.serviceDelegate didSelectItem:item];
}

@end