[ObjC ARC] Converts ios/chrome/browser/passwords:passwords_internal to ARC.

ios/chrome/browser/passwords/password_generation_prompt_view.mm

 // Copyright 2014 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/passwords/password_generation_prompt_view.h"
 
 #include <memory>
 
-#include "base/ios/weak_nsobject.h"
-#include "base/mac/scoped_nsobject.h"
 #include "base/strings/sys_string_conversions.h"
 #include "components/strings/grit/components_strings.h"
 #import "ios/chrome/browser/passwords/password_generation_prompt_delegate.h"
 #import "ios/chrome/browser/ui/rtl_geometry.h"
 #include "ios/chrome/browser/ui/ui_util.h"
 #import "ios/chrome/browser/ui/uikit_ui_util.h"
 #include "ios/chrome/common/string_util.h"
 #include "ios/chrome/grit/ios_strings.h"
 #include "ios/chrome/grit/ios_theme_resources.h"
 #import "ios/third_party/material_components_ios/src/components/Buttons/src/MaterialButtons.h"
 #import "ios/third_party/material_components_ios/src/components/Typography/src/MaterialTypography.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 namespace {
 
 // Material Design Component constraints.
 const CGFloat kMDCPadding = 24;
 
 // Horizontal and vertical padding for the entire view.
 const CGFloat kPadding = 8.0f;
 
 // Colors for primary and secondary user interactions.
 const int kPrimaryActionColor = 0x5595FE;
@@ skipping 42 matching lines @@
 
 // Returns an autoreleased text view to explain password generation with a link.
 - (UITextView*)description;
 
 // Returns an autoreleased view that shows the lock icon.
 - (UIImageView*)keyIconView;
 
 @end
 
 @implementation PasswordGenerationPromptView {
-  base::scoped_nsobject<NSString> _password;
-  base::WeakNSProtocol<id<PasswordGenerationPromptDelegate>> _delegate;
-  base::scoped_nsobject<NSURL> _URL;
-  base::scoped_nsobject<UILabel> _title;
+  NSString* _password;
+  __weak id<PasswordGenerationPromptDelegate> _delegate;
+  NSURL* _URL;
+  UILabel* _title;
 }
 
 - (instancetype)initWithPassword:(NSString*)password
                         delegate:
                             (id<PasswordGenerationPromptDelegate>)delegate {
   self = [super initWithFrame:CGRectZero];
   if (self) {
-    _URL.reset(
-        [[NSURL URLWithString:@"chromeinternal://showpasswords"] retain]);
-    _delegate.reset(delegate);
-    _password.reset([password copy]);
+    _URL = [NSURL URLWithString:@"chromeinternal://showpasswords"];
+    _delegate = delegate;
+    _password = [password copy];
   }
   return self;
 }
 
 - (void)configure {
-  UIView* headerView = [[[UIView alloc] initWithFrame:CGRectZero] autorelease];
+  UIView* headerView = [[UIView alloc] initWithFrame:CGRectZero];
   UIImageView* icon = [self keyIconView];
   UILabel* title = [self titleLabel];
   UILabel* password = [self passwordLabel:_password];
   UITextView* description = [self description];
 
-  _title.reset([title retain]);
+  _title = title;
 
   [headerView addSubview:icon];
   [headerView addSubview:title];
   [headerView addSubview:password];
   [self addSubview:headerView];
   [self addSubview:description];
 
   // -----------------------------------------------
   // |                                             |
   // |  (lock)  Use password generated by Chrome?  |
@@ skipping 59 matching lines @@
 }
 
 - (UILabel*)titleLabel {
   NSMutableDictionary* attrsDictionary = [NSMutableDictionary
       dictionaryWithObject:[[MDCTypography fontLoader]
                                mediumFontOfSize:kTitleLabelFontSize]
                     forKey:NSFontAttributeName];
   [attrsDictionary setObject:UIColorFromRGB(kTitleLabelFontColor)
                       forKey:NSForegroundColorAttributeName];
 
-  NSMutableAttributedString* string = [[[NSMutableAttributedString alloc]
+  NSMutableAttributedString* string = [[NSMutableAttributedString alloc]
       initWithString:l10n_util::GetNSString(
                          IDS_IOS_GENERATED_PASSWORD_PROMPT_TITLE)
-          attributes:attrsDictionary] autorelease];
+          attributes:attrsDictionary];
 
-  base::scoped_nsobject<UILabel> titleLabel([[UILabel alloc] init]);
+  UILabel* titleLabel = [[UILabel alloc] init];
   [titleLabel setAttributedText:string];
   [titleLabel setNumberOfLines:0];
   [titleLabel sizeToFit];
-  return titleLabel.autorelease();
+  return titleLabel = nil;
 }
 
 - (UILabel*)passwordLabel:(NSString*)password {
-  base::scoped_nsobject<UILabel> passwordLabel([[UILabel alloc] init]);
+  UILabel* passwordLabel = [[UILabel alloc] init];
   [passwordLabel setText:password];
   [passwordLabel setTextColor:UIColorFromRGB(kPasswordLabelFontColor)];
   [passwordLabel setFont:[[MDCTypography fontLoader]
                              regularFontOfSize:kPasswordLabelFontSize]];
   [passwordLabel setNumberOfLines:1];
   [passwordLabel sizeToFit];
-  return passwordLabel.autorelease();
+  return passwordLabel = nil;
 }
 
 - (UITextView*)description {
   NSRange linkRange;
   NSString* description = ParseStringWithLink(
       l10n_util::GetNSString(IDS_IOS_GENERATED_PASSWORD_PROMPT_DESCRIPTION),
       &linkRange);
 
-  base::scoped_nsobject<NSMutableParagraphStyle> paragraphStyle(
-      [[NSMutableParagraphStyle alloc] init]);
+  NSMutableParagraphStyle* paragraphStyle =
+      [[NSMutableParagraphStyle alloc] init];
   [paragraphStyle setLineSpacing:kDescriptionLabelLineSpacing];
 
   NSDictionary* attributeDictionary =
       [NSDictionary dictionaryWithObjectsAndKeys:
                         UIColorFromRGB(kDescriptionLabelFontColor),
-                        NSForegroundColorAttributeName, paragraphStyle.get(),
+                        NSForegroundColorAttributeName, paragraphStyle,
                         NSParagraphStyleAttributeName,
                         [[MDCTypography fontLoader]
                             regularFontOfSize:kDescriptionLabelFontSize],
                         NSFontAttributeName, nil];
 
-  base::scoped_nsobject<NSMutableAttributedString> attributedString(
+  NSMutableAttributedString* attributedString =
       [[NSMutableAttributedString alloc] initWithString:description
-                                             attributes:attributeDictionary]);
+                                             attributes:attributeDictionary];
 
   UITextView* descriptionView =
-      [[[UITextView alloc] initWithFrame:CGRectZero textContainer:nil]
-          autorelease];
+      [[UITextView alloc] initWithFrame:CGRectZero textContainer:nil];
   descriptionView.scrollEnabled = NO;
   descriptionView.selectable = YES;
   descriptionView.editable = NO;
   descriptionView.delegate = self;
   descriptionView.userInteractionEnabled = YES;
 
   descriptionView.linkTextAttributes =
       [NSDictionary dictionaryWithObject:UIColorFromRGB(kPrimaryActionColor)
                                   forKey:NSForegroundColorAttributeName];
 
   [attributedString addAttribute:NSLinkAttributeName
                            value:_URL
                            range:linkRange];
   descriptionView.attributedText = attributedString;
   return descriptionView;
 }
 
 - (UIImageView*)keyIconView {
   UIImage* keyIcon = ui::ResourceBundle::GetSharedInstance()
                          .GetImageNamed(IDR_IOS_INFOBAR_AUTOLOGIN)
                          .ToUIImage();
-  UIImageView* keyIconView =
-      [[[UIImageView alloc] initWithImage:keyIcon] autorelease];
+  UIImageView* keyIconView = [[UIImageView alloc] initWithImage:keyIcon];
   [keyIconView setFrame:{CGPointZero, keyIcon.size}];
   return keyIconView;
 }
 
 #pragma mark - UITextViewDelegate
 
 - (BOOL)textView:(UITextView*)textView
     shouldInteractWithURL:(NSURL*)URL
                   inRange:(NSRange)characterRange
               interaction:(UITextItemInteraction)interaction {
-  DCHECK([URL isEqual:_URL.get()]);
+  DCHECK([URL isEqual:_URL]);
   [_delegate showSavedPasswords:self];
   return NO;
 }
 
 @end
 
 #pragma mark - Classes emulating MDCDialog
 
 @interface PasswordGenerationPromptDialog () {
-  base::WeakNSObject<UIViewController> _viewController;
-  base::WeakNSProtocol<id<PasswordGenerationPromptDelegate>> _weakDelegate;
+  __weak UIViewController* _viewController;
+  __weak id<PasswordGenerationPromptDelegate> _weakDelegate;
 }
 
 // Dismiss the dialog.
 - (void)dismiss;
 // Callback called when the user accept to use the password.
 - (void)acceptPassword;
 // Creates the view containing the buttons.
 - (UIView*)createButtons;
 
 @end
 
 @implementation PasswordGenerationPromptDialog
 
 - (instancetype)initWithDelegate:(id<PasswordGenerationPromptDelegate>)delegate
                   viewController:(UIViewController*)viewController {
   self = [super initWithFrame:CGRectZero];
   if (self) {
-    _viewController.reset(viewController);
-    _weakDelegate.reset(delegate);
+    _viewController = viewController;
+    _weakDelegate = delegate;
   }
   return self;
 }
 
 - (void)dismiss {
   [_viewController dismissViewControllerAnimated:NO completion:nil];
 }
 
 - (void)acceptPassword {
   [_weakDelegate acceptPasswordGeneration:nil];
   [self dismiss];
 }
 
 // Creates the view containing the buttons.
 - (UIView*)createButtons {
-  UIView* view = [[[UIView alloc] initWithFrame:CGRectZero] autorelease];
+  UIView* view = [[UIView alloc] initWithFrame:CGRectZero];
 
   NSString* cancelTitle = l10n_util::GetNSString(IDS_CANCEL);
-  MDCFlatButton* cancelButton = [[[MDCFlatButton alloc] init] autorelease];
+  MDCFlatButton* cancelButton = [[MDCFlatButton alloc] init];
   [cancelButton setTitle:cancelTitle forState:UIControlStateNormal];
   [cancelButton sizeToFit];
   [cancelButton setCustomTitleColor:[UIColor blackColor]];
   [cancelButton addTarget:self
                    action:@selector(dismiss)
          forControlEvents:UIControlEventTouchUpInside];
 
   NSString* acceptTitle =
       l10n_util::GetNSString(IDS_IOS_GENERATED_PASSWORD_ACCEPT);
-  MDCFlatButton* OKButton = [[[MDCFlatButton alloc] init] autorelease];
+  MDCFlatButton* OKButton = [[MDCFlatButton alloc] init];
   [OKButton setTitle:acceptTitle forState:UIControlStateNormal];
   [OKButton sizeToFit];
   [OKButton setCustomTitleColor:[UIColor blackColor]];
   [OKButton addTarget:self
                 action:@selector(acceptPassword)
       forControlEvents:UIControlEventTouchUpInside];
 
   [cancelButton setTranslatesAutoresizingMaskIntoConstraints:NO];
   [OKButton setTranslatesAutoresizingMaskIntoConstraints:NO];
 
@@ skipping 11 matching lines @@
                                                options:NSLayoutFormatAlignAllTop
                                                metrics:nil
                                                  views:views]];
 
   return view;
 }
 
 // Creates the view containing the password text and the buttons.
 - (void)configureGlobalViewWithPassword:(NSString*)password {
   PasswordGenerationPromptView* passwordContentView =
-      [[[PasswordGenerationPromptView alloc] initWithPassword:password
-                                                     delegate:_weakDelegate]
-          autorelease];
+      [[PasswordGenerationPromptView alloc] initWithPassword:password
+                                                    delegate:_weakDelegate];
 
   [passwordContentView configure];
 
   [passwordContentView setTranslatesAutoresizingMaskIntoConstraints:NO];
 
   UIView* buttons = [self createButtons];
   [buttons setTranslatesAutoresizingMaskIntoConstraints:NO];
 
   [self addSubview:passwordContentView];
   [self addSubview:buttons];
 
   NSDictionary* views =
       @{ @"view" : passwordContentView,
          @"buttons" : buttons };
   NSDictionary* metrics = @{ @"MDCPadding" : @(kMDCPadding) };
   [self addConstraints:[NSLayoutConstraint
                            constraintsWithVisualFormat:
                                @"V:|[view]-(MDCPadding)-[buttons]-|"
                                                options:NSLayoutAttributeTrailing
                                                metrics:metrics
                                                  views:views]];
   [self addConstraints:[NSLayoutConstraint
                            constraintsWithVisualFormat:@"H:|[view]|"
                                                options:0
                                                metrics:nil
                                                  views:views]];
 }
 
 @end