ios/chrome/browser/ui/autofill/autofill_country_selection_table_view_controller.mm - chromium/src - Git at Google

 // Copyright 2023 The Chromium Authors
 // 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/autofill/autofill_country_selection_table_view_controller.h"

 #import "base/apple/foundation_util.h"
 #import "base/strings/sys_string_conversions.h"
 #import "ios/chrome/browser/shared/public/features/features.h"
 #import "ios/chrome/browser/shared/ui/table_view/table_view_navigation_controller_constants.h"
 #import "ios/chrome/browser/shared/ui/table_view/table_view_utils.h"
 #import "ios/chrome/browser/shared/ui/util/uikit_ui_util.h"
 #import "ios/chrome/browser/ui/autofill/cells/country_item.h"
 #import "ios/chrome/browser/ui/settings/autofill/autofill_constants.h"
 #import "ios/chrome/common/ui/colors/semantic_color_names.h"
 #import "ios/chrome/common/ui/table_view/table_view_cells_constants.h"
 #import "ios/chrome/common/ui/util/constraints_ui_util.h"
 #import "ios/chrome/grit/ios_strings.h"
 #import "ui/base/l10n/l10n_util_mac.h"

 namespace {

 typedef NS_ENUM(NSInteger, SectionIdentifier) {
   SectionIdentifierCountries = kSectionIdentifierEnumZero,
 };

 }  // namespace

 @interface AutofillCountrySelectionTableViewController () <
     UISearchControllerDelegate,
     UISearchResultsUpdating> {
 }

 // The delegate passed to this instance.
 @property(nonatomic, weak)
     id<AutofillCountrySelectionTableViewControllerDelegate>
         delegate;

 // This ViewController's search controller.
 @property(nonatomic, strong) UISearchController* searchController;

 // Denotes the currently selected country.
 @property(nonatomic, strong) NSString* currentlySelectedCountry;

 // The current search filter. May be nil.
 @property(nonatomic, strong) NSPredicate* searchPredicate;

 // Scrim overlay covering the entire tableView when the search bar is focused.
 @property(nonatomic, strong) UIControl* scrimView;

 // The fetched country list.
 @property(nonatomic, weak) NSArray<CountryItem*>* allCountries;

 // If YES, denotes that the view is shown in the settings.
 @property(nonatomic, assign) BOOL settingsView;

 @end

 @implementation AutofillCountrySelectionTableViewController

 - (instancetype)initWithDelegate:
                     (id<AutofillCountrySelectionTableViewControllerDelegate>)
                         delegate
                  selectedCountry:(NSString*)selectedCountry
                     allCountries:(NSArray<CountryItem*>*)allCountries
                     settingsView:(BOOL)settingsView {
   DCHECK(delegate);

   self = [super initWithStyle:(settingsView ? ChromeTableViewStyle()
                                             : UITableViewStylePlain)];
   if (self) {
     _delegate = delegate;
     _currentlySelectedCountry = selectedCountry;
     _allCountries = allCountries;
     _settingsView = settingsView;
   }
   return self;
 }

 #pragma mark - UIViewController

 - (void)viewDidLoad {
   [super viewDidLoad];

   if (!self.settingsView) {
     self.title = l10n_util::GetNSString(IDS_IOS_AUTOFILL_SELECT_COUNTRY);
     self.view.backgroundColor = [UIColor colorNamed:kBackgroundColor];
     self.tableView.sectionHeaderHeight = 0;
     self.tableView.sectionFooterHeight = 0;
   } else {
     self.title = l10n_util::GetNSString(IDS_IOS_AUTOFILL_EDIT_ADDRESS);
   }
   [self.tableView
       setSeparatorInset:UIEdgeInsetsMake(0, kTableViewHorizontalSpacing, 0, 0)];

   // Search controller.
   self.searchController =
       [[UISearchController alloc] initWithSearchResultsController:nil];
   self.searchController.obscuresBackgroundDuringPresentation = NO;
   self.searchController.searchResultsUpdater = self;
   self.searchController.searchBar.accessibilityIdentifier =
       kAutofillCountrySelectionTableViewId;
   // Presentation of searchController will walk up the view controller hierarchy
   // until it finds the root view controller or one that defines a presentation
   // context. Make this view controller the presentation context so that the
   // searchController does not present on top of the navigation controller.
   self.definesPresentationContext = YES;
   // Place the search bar in the navigation bar.
   self.navigationItem.searchController = self.searchController;
   self.navigationItem.hidesSearchBarWhenScrolling = NO;
   self.navigationItem.largeTitleDisplayMode =
       UINavigationItemLargeTitleDisplayModeAutomatic;

   // Scrim.
   self.scrimView = [[UIControl alloc] init];
   self.scrimView.alpha = 0.0f;
   self.scrimView.backgroundColor = UIColor.clearColor;
   self.scrimView.translatesAutoresizingMaskIntoConstraints = NO;
   self.scrimView.accessibilityIdentifier =
       kAutofillCountrySelectionSearchScrimId;
   [self.scrimView addTarget:self
                      action:@selector(dismissSearchController:)
            forControlEvents:UIControlEventTouchUpInside];

   [self loadModel];
 }

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

   // Autoscroll to the selected country.
   for (CountryItem* item in [self.tableViewModel
            itemsInSectionWithIdentifier:SectionIdentifierCountries]) {
     if (item.accessoryType == UITableViewCellAccessoryCheckmark) {
       NSIndexPath* indexPath = [self.tableViewModel indexPathForItem:item];
       [self.tableView scrollToRowAtIndexPath:indexPath
                             atScrollPosition:UITableViewScrollPositionMiddle
                                     animated:NO];
     }
   }
 }

 #pragma mark - ChromeTableViewController

 - (void)loadModel {
   [super loadModel];

   [self.tableViewModel addSectionWithIdentifier:SectionIdentifierCountries];
   [self populateCountriesSection];
 }

 #pragma mark - UITableViewDelegate

 - (void)tableView:(UITableView*)tableView
     didSelectRowAtIndexPath:(NSIndexPath*)indexPath {
   if (@available(iOS 16.0, *)) {
     return;
   }

   CountryItem* item = base::apple::ObjCCastStrict<CountryItem>(
       [self.tableViewModel itemAtIndexPath:indexPath]);
   [self.delegate didSelectCountry:item];
 }

 - (void)tableView:(UITableView*)tableView
     performPrimaryActionForRowAtIndexPath:(NSIndexPath*)indexPath {
   CountryItem* item = base::apple::ObjCCastStrict<CountryItem>(
       [self.tableViewModel itemAtIndexPath:indexPath]);
   [self.delegate didSelectCountry:item];
 }

 #pragma mark - UISearchResultsUpdating

 - (void)updateSearchResultsForSearchController:
     (UISearchController*)searchController {
   NSString* searchText = searchController.searchBar.text;

   // Set the current search filter to filter the languages based on the display
   // name of the language in the current locale and the language locale. The
   // search is case insensitive and diacritic insensitive. If the search text is
   // empty all languages will be displayed.
   self.searchPredicate = [[NSPredicate
       predicateWithFormat:@"$searchText.length == 0 OR text CONTAINS[cd] "
                           @"$searchText"]
       predicateWithSubstitutionVariables:@{@"searchText" : searchText}];

   // Show the scrim overlay only if the search text is empty and the search
   // controller is active (it is not being dismissed); Otherwise hide it.
   if (searchText.length == 0 && self.searchController.active) {
     [self showScrim];
   } else {
     [self hideScrim];
   }

   [self updateCountriesSection];
 }

 #pragma mark - Helper methods

 // Populates the country items in the section.
 - (void)populateCountriesSection {
   TableViewModel* model = self.tableViewModel;

   // Filter the countries items based on the current search text, if applicable.
   NSArray<CountryItem*>* filteredSupportedCountries = self.allCountries;
   if (self.searchPredicate) {
     filteredSupportedCountries = [filteredSupportedCountries
         filteredArrayUsingPredicate:self.searchPredicate];
   }

   for (CountryItem* item in filteredSupportedCountries) {
     [model addItem:item toSectionWithIdentifier:SectionIdentifierCountries];
   }
 }

 // Shows scrim overlay and hide toolbar.
 - (void)showScrim {
   if (self.scrimView.alpha < 1.0f) {
     self.scrimView.alpha = 0.0f;
     [self.tableView addSubview:self.scrimView];
     // We attach our constraints to the superview because the tableView is
     // a scrollView and it seems that we get an empty frame when attaching to
     // it.
     AddSameConstraints(self.scrimView, self.view.superview);
     self.tableView.accessibilityElementsHidden = YES;
     self.tableView.scrollEnabled = NO;
     __weak __typeof(self) weakSelf = self;
     [UIView animateWithDuration:kTableViewNavigationScrimFadeDuration
                      animations:^{
                        weakSelf.scrimView.alpha = 1.0f;
                        [weakSelf.view layoutIfNeeded];
                      }];
   }
 }

 // Hides scrim and restore toolbar.
 - (void)hideScrim {
   if (self.scrimView.alpha > 0.0f) {
     __weak __typeof(self) weakSelf = self;
     [UIView animateWithDuration:kTableViewNavigationScrimFadeDuration
         animations:^{
           weakSelf.scrimView.alpha = 0.0f;
         }
         completion:^(BOOL finished) {
           [weakSelf.scrimView removeFromSuperview];
           weakSelf.tableView.accessibilityElementsHidden = NO;
           weakSelf.tableView.scrollEnabled = YES;
         }];
   }
 }

 // Dismisses the search controller when the scrim overlay is tapped.
 - (void)dismissSearchController:(UIControl*)sender {
   self.searchController.active = NO;
 }

 // Reloads the countries items in thes ection.
 - (void)updateCountriesSection {
   // Update the model.
   [self.tableViewModel
       deleteAllItemsFromSectionWithIdentifier:SectionIdentifierCountries];
   [self populateCountriesSection];

   // Update the table view.
   NSUInteger index = [self.tableViewModel
       sectionForSectionIdentifier:SectionIdentifierCountries];
   [self.tableView reloadSections:[NSIndexSet indexSetWithIndex:index]
                 withRowAnimation:UITableViewRowAnimationNone];
 }

 #pragma mark - SettingsControllerProtocol

 - (void)reportDismissalUserAction {
   // TODO(crbug.com/1407666): Record for this VC.
 }

 - (void)reportBackUserAction {
   // TODO(crbug.com/1407666): Record for this VC.
 }

 @end
	// Copyright 2023 The Chromium Authors
	// 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/autofill/autofill_country_selection_table_view_controller.h"

	#import "base/apple/foundation_util.h"
	#import "base/strings/sys_string_conversions.h"
	#import "ios/chrome/browser/shared/public/features/features.h"
	#import "ios/chrome/browser/shared/ui/table_view/table_view_navigation_controller_constants.h"
	#import "ios/chrome/browser/shared/ui/table_view/table_view_utils.h"
	#import "ios/chrome/browser/shared/ui/util/uikit_ui_util.h"
	#import "ios/chrome/browser/ui/autofill/cells/country_item.h"
	#import "ios/chrome/browser/ui/settings/autofill/autofill_constants.h"
	#import "ios/chrome/common/ui/colors/semantic_color_names.h"
	#import "ios/chrome/common/ui/table_view/table_view_cells_constants.h"
	#import "ios/chrome/common/ui/util/constraints_ui_util.h"
	#import "ios/chrome/grit/ios_strings.h"
	#import "ui/base/l10n/l10n_util_mac.h"

	namespace {

	typedef NS_ENUM(NSInteger, SectionIdentifier) {
	SectionIdentifierCountries = kSectionIdentifierEnumZero,
	};

	} // namespace

	@interface AutofillCountrySelectionTableViewController () <
	UISearchControllerDelegate,
	UISearchResultsUpdating> {
	}

	// The delegate passed to this instance.
	@property(nonatomic, weak)
	id<AutofillCountrySelectionTableViewControllerDelegate>
	delegate;

	// This ViewController's search controller.
	@property(nonatomic, strong) UISearchController* searchController;

	// Denotes the currently selected country.
	@property(nonatomic, strong) NSString* currentlySelectedCountry;

	// The current search filter. May be nil.
	@property(nonatomic, strong) NSPredicate* searchPredicate;

	// Scrim overlay covering the entire tableView when the search bar is focused.
	@property(nonatomic, strong) UIControl* scrimView;

	// The fetched country list.
	@property(nonatomic, weak) NSArray<CountryItem> allCountries;

	// If YES, denotes that the view is shown in the settings.
	@property(nonatomic, assign) BOOL settingsView;

	@end

	@implementation AutofillCountrySelectionTableViewController

	- (instancetype)initWithDelegate:
	(id<AutofillCountrySelectionTableViewControllerDelegate>)
	delegate
	selectedCountry:(NSString*)selectedCountry
	allCountries:(NSArray<CountryItem>)allCountries
	settingsView:(BOOL)settingsView {
	DCHECK(delegate);

	self = [super initWithStyle:(settingsView ? ChromeTableViewStyle()
	: UITableViewStylePlain)];
	if (self) {
	_delegate = delegate;
	_currentlySelectedCountry = selectedCountry;
	_allCountries = allCountries;
	_settingsView = settingsView;
	}
	return self;
	}

	#pragma mark - UIViewController

	- (void)viewDidLoad {
	[super viewDidLoad];

	if (!self.settingsView) {
	self.title = l10n_util::GetNSString(IDS_IOS_AUTOFILL_SELECT_COUNTRY);
	self.view.backgroundColor = [UIColor colorNamed:kBackgroundColor];
	self.tableView.sectionHeaderHeight = 0;
	self.tableView.sectionFooterHeight = 0;
	} else {
	self.title = l10n_util::GetNSString(IDS_IOS_AUTOFILL_EDIT_ADDRESS);
	}
	[self.tableView
	setSeparatorInset:UIEdgeInsetsMake(0, kTableViewHorizontalSpacing, 0, 0)];

	// Search controller.
	self.searchController =
	[[UISearchController alloc] initWithSearchResultsController:nil];
	self.searchController.obscuresBackgroundDuringPresentation = NO;
	self.searchController.searchResultsUpdater = self;
	self.searchController.searchBar.accessibilityIdentifier =
	kAutofillCountrySelectionTableViewId;
	// Presentation of searchController will walk up the view controller hierarchy
	// until it finds the root view controller or one that defines a presentation
	// context. Make this view controller the presentation context so that the
	// searchController does not present on top of the navigation controller.
	self.definesPresentationContext = YES;
	// Place the search bar in the navigation bar.
	self.navigationItem.searchController = self.searchController;
	self.navigationItem.hidesSearchBarWhenScrolling = NO;
	self.navigationItem.largeTitleDisplayMode =
	UINavigationItemLargeTitleDisplayModeAutomatic;

	// Scrim.
	self.scrimView = [[UIControl alloc] init];
	self.scrimView.alpha = 0.0f;
	self.scrimView.backgroundColor = UIColor.clearColor;
	self.scrimView.translatesAutoresizingMaskIntoConstraints = NO;
	self.scrimView.accessibilityIdentifier =
	kAutofillCountrySelectionSearchScrimId;
	[self.scrimView addTarget:self
	action:@selector(dismissSearchController:)
	forControlEvents:UIControlEventTouchUpInside];

	[self loadModel];
	}

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

	// Autoscroll to the selected country.
	for (CountryItem* item in [self.tableViewModel
	itemsInSectionWithIdentifier:SectionIdentifierCountries]) {
	if (item.accessoryType == UITableViewCellAccessoryCheckmark) {
	NSIndexPath* indexPath = [self.tableViewModel indexPathForItem:item];
	[self.tableView scrollToRowAtIndexPath:indexPath
	atScrollPosition:UITableViewScrollPositionMiddle
	animated:NO];
	}
	}
	}

	#pragma mark - ChromeTableViewController

	- (void)loadModel {
	[super loadModel];

	[self.tableViewModel addSectionWithIdentifier:SectionIdentifierCountries];
	[self populateCountriesSection];
	}

	#pragma mark - UITableViewDelegate

	- (void)tableView:(UITableView*)tableView
	didSelectRowAtIndexPath:(NSIndexPath*)indexPath {
	if (@available(iOS 16.0, *)) {
	return;
	}

	CountryItem* item = base::apple::ObjCCastStrict<CountryItem>(
	[self.tableViewModel itemAtIndexPath:indexPath]);
	[self.delegate didSelectCountry:item];
	}

	- (void)tableView:(UITableView*)tableView
	performPrimaryActionForRowAtIndexPath:(NSIndexPath*)indexPath {
	CountryItem* item = base::apple::ObjCCastStrict<CountryItem>(
	[self.tableViewModel itemAtIndexPath:indexPath]);
	[self.delegate didSelectCountry:item];
	}

	#pragma mark - UISearchResultsUpdating

	- (void)updateSearchResultsForSearchController:
	(UISearchController*)searchController {
	NSString* searchText = searchController.searchBar.text;

	// Set the current search filter to filter the languages based on the display
	// name of the language in the current locale and the language locale. The
	// search is case insensitive and diacritic insensitive. If the search text is
	// empty all languages will be displayed.
	self.searchPredicate = [[NSPredicate
	predicateWithFormat:@"$searchText.length == 0 OR text CONTAINS[cd] "
	@"$searchText"]
	predicateWithSubstitutionVariables:@{@"searchText" : searchText}];

	// Show the scrim overlay only if the search text is empty and the search
	// controller is active (it is not being dismissed); Otherwise hide it.
	if (searchText.length == 0 && self.searchController.active) {
	[self showScrim];
	} else {
	[self hideScrim];
	}

	[self updateCountriesSection];
	}

	#pragma mark - Helper methods

	// Populates the country items in the section.
	- (void)populateCountriesSection {
	TableViewModel* model = self.tableViewModel;

	// Filter the countries items based on the current search text, if applicable.
	NSArray<CountryItem> filteredSupportedCountries = self.allCountries;
	if (self.searchPredicate) {
	filteredSupportedCountries = [filteredSupportedCountries
	filteredArrayUsingPredicate:self.searchPredicate];
	}

	for (CountryItem* item in filteredSupportedCountries) {
	[model addItem:item toSectionWithIdentifier:SectionIdentifierCountries];
	}
	}

	// Shows scrim overlay and hide toolbar.
	- (void)showScrim {
	if (self.scrimView.alpha < 1.0f) {
	self.scrimView.alpha = 0.0f;
	[self.tableView addSubview:self.scrimView];
	// We attach our constraints to the superview because the tableView is
	// a scrollView and it seems that we get an empty frame when attaching to
	// it.
	AddSameConstraints(self.scrimView, self.view.superview);
	self.tableView.accessibilityElementsHidden = YES;
	self.tableView.scrollEnabled = NO;
	__weak __typeof(self) weakSelf = self;
	[UIView animateWithDuration:kTableViewNavigationScrimFadeDuration
	animations:^{
	weakSelf.scrimView.alpha = 1.0f;
	[weakSelf.view layoutIfNeeded];
	}];
	}
	}

	// Hides scrim and restore toolbar.
	- (void)hideScrim {
	if (self.scrimView.alpha > 0.0f) {
	__weak __typeof(self) weakSelf = self;
	[UIView animateWithDuration:kTableViewNavigationScrimFadeDuration
	animations:^{
	weakSelf.scrimView.alpha = 0.0f;
	}
	completion:^(BOOL finished) {
	[weakSelf.scrimView removeFromSuperview];
	weakSelf.tableView.accessibilityElementsHidden = NO;
	weakSelf.tableView.scrollEnabled = YES;
	}];
	}
	}

	// Dismisses the search controller when the scrim overlay is tapped.
	- (void)dismissSearchController:(UIControl*)sender {
	self.searchController.active = NO;
	}

	// Reloads the countries items in thes ection.
	- (void)updateCountriesSection {
	// Update the model.
	[self.tableViewModel
	deleteAllItemsFromSectionWithIdentifier:SectionIdentifierCountries];
	[self populateCountriesSection];

	// Update the table view.
	NSUInteger index = [self.tableViewModel
	sectionForSectionIdentifier:SectionIdentifierCountries];
	[self.tableView reloadSections:[NSIndexSet indexSetWithIndex:index]
	withRowAnimation:UITableViewRowAnimationNone];
	}

	#pragma mark - SettingsControllerProtocol

	- (void)reportDismissalUserAction {
	// TODO(crbug.com/1407666): Record for this VC.
	}

	- (void)reportBackUserAction {
	// TODO(crbug.com/1407666): Record for this VC.
	}

	@end