Convert ios_web_view_shell to pure Objective-C.

ios/web_view/shell/shell_view_controller.mm

Index: ios/web_view/shell/shell_view_controller.mm
diff --git a/ios/web_view/shell/shell_view_controller.mm b/ios/web_view/shell/shell_view_controller.mm
deleted file mode 100644
index ed95efaa9b332fa023891b7f42627f415fc12d8a..0000000000000000000000000000000000000000
--- a/ios/web_view/shell/shell_view_controller.mm
+++ /dev/null
@@ -1,206 +0,0 @@
-// 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/web_view/shell/shell_view_controller.h"
-
-#import "ios/web_view/public/criwv.h"
-#import "ios/web_view/public/criwv_web_view.h"
-#import "ios/web_view/shell/translate_controller.h"
-
-#if !defined(__has_feature) || !__has_feature(objc_arc)
-#error "This file requires ARC support."
-#endif
-
-namespace {
-const CGFloat kButtonSize = 44;
-}
-
-@interface ShellViewController ()
-// Container for |webView|.
-@property (nonatomic, strong) UIView* containerView;
-// Text field used for navigating to URLs.
-@property (nonatomic, strong) UITextField* field;
-// Toolbar containing navigation buttons and |field|.
-@property (nonatomic, strong) UIToolbar* toolbar;
-// CRIWV view which renders the web page.
-@property (nonatomic, strong) id<CRIWVWebView> webView;
-// Handles the translation of the content displayed in |webView|.
-@property (nonatomic, strong) TranslateController* translateController;
-
-- (void)back;
-- (void)forward;
-- (void)stopLoading;
-@end
-
-@implementation ShellViewController
-
-@synthesize containerView = _containerView;
-@synthesize field = _field;
-@synthesize toolbar = _toolbar;
-@synthesize webView = _webView;
-@synthesize translateController = _translateController;
-
-- (void)viewDidLoad {
-  [super viewDidLoad];
-
-  CGRect bounds = self.view.bounds;
-
-  // Set up the toolbar.
-  self.toolbar = [[UIToolbar alloc] init];
-  [_toolbar setBarTintColor:[UIColor colorWithRed:0.337
-                                            green:0.467
-                                             blue:0.988
-                                            alpha:1.0]];
-  [_toolbar setFrame:CGRectMake(0, 20, CGRectGetWidth(bounds), 44)];
-  [_toolbar setAutoresizingMask:UIViewAutoresizingFlexibleWidth |
-                                UIViewAutoresizingFlexibleBottomMargin];
-  [self.view addSubview:_toolbar];
-
-  // Set up the container view.
-  self.containerView = [[UIView alloc] init];
-  [_containerView setFrame:CGRectMake(0, 64, CGRectGetWidth(bounds),
-                                      CGRectGetHeight(bounds) - 64)];
-  [_containerView setBackgroundColor:[UIColor lightGrayColor]];
-  [_containerView setAutoresizingMask:UIViewAutoresizingFlexibleWidth |
-                                      UIViewAutoresizingFlexibleHeight];
-  [self.view addSubview:_containerView];
-
-  // Text field.
-  const int kButtonCount = 3;
-  self.field = [[UITextField alloc]
-      initWithFrame:CGRectMake(kButtonCount * kButtonSize, 6,
-                               CGRectGetWidth([_toolbar frame]) -
-                                   kButtonCount * kButtonSize - 10,
-                               31)];
-  [_field setDelegate:self];
-  [_field setBackground:[[UIImage imageNamed:@"textfield_background"]
-                            resizableImageWithCapInsets:UIEdgeInsetsMake(
-                                                            12, 12, 12, 12)]];
-  [_field setAutoresizingMask:UIViewAutoresizingFlexibleWidth];
-  [_field setKeyboardType:UIKeyboardTypeWebSearch];
-  [_field setAutocorrectionType:UITextAutocorrectionTypeNo];
-  [_field setClearButtonMode:UITextFieldViewModeWhileEditing];
-
-  // Set up the toolbar buttons.
-  // Back.
-  UIButton* back = [UIButton buttonWithType:UIButtonTypeCustom];
-  [back setImage:[UIImage imageNamed:@"toolbar_back"]
-        forState:UIControlStateNormal];
-  [back setFrame:CGRectMake(0, 0, kButtonSize, kButtonSize)];
-  UIEdgeInsets insets = UIEdgeInsetsMake(5, 5, 4, 4);
-  [back setImageEdgeInsets:insets];
-  [back setAutoresizingMask:UIViewAutoresizingFlexibleRightMargin];
-  [back addTarget:self
-                action:@selector(back)
-      forControlEvents:UIControlEventTouchUpInside];
-
-  // Forward.
-  UIButton* forward = [UIButton buttonWithType:UIButtonTypeCustom];
-  [forward setImage:[UIImage imageNamed:@"toolbar_forward"]
-           forState:UIControlStateNormal];
-  [forward setFrame:CGRectMake(kButtonSize, 0, kButtonSize, kButtonSize)];
-  [forward setImageEdgeInsets:insets];
-  [forward setAutoresizingMask:UIViewAutoresizingFlexibleRightMargin];
-  [forward addTarget:self
-                action:@selector(forward)
-      forControlEvents:UIControlEventTouchUpInside];
-
-  // Stop.
-  UIButton* stop = [UIButton buttonWithType:UIButtonTypeCustom];
-  [stop setImage:[UIImage imageNamed:@"toolbar_stop"]
-        forState:UIControlStateNormal];
-  [stop setFrame:CGRectMake(2 * kButtonSize, 0, kButtonSize, kButtonSize)];
-  [stop setImageEdgeInsets:insets];
-  [stop setAutoresizingMask:UIViewAutoresizingFlexibleRightMargin];
-  [stop addTarget:self
-                action:@selector(stopLoading)
-      forControlEvents:UIControlEventTouchUpInside];
-
-  [_toolbar addSubview:back];
-  [_toolbar addSubview:forward];
-  [_toolbar addSubview:stop];
-  [_toolbar addSubview:_field];
-
-  self.webView = [CRIWV webView];
-  [_webView setDelegate:self];
-  UIView* view = [_webView view];
-  [_containerView addSubview:view];
-  [view setFrame:[_containerView bounds]];
-  [view setAutoresizingMask:UIViewAutoresizingFlexibleWidth |
-                            UIViewAutoresizingFlexibleHeight];
-
-  [_webView loadURL:[NSURL URLWithString:@"https://www.google.com/"]];
-}
-
-- (UIBarPosition)positionForBar:(id<UIBarPositioning>)bar {
-  if (bar == _toolbar) {
-    return UIBarPositionTopAttached;
-  }
-  return UIBarPositionAny;
-}
-
-- (void)back {
-  if ([_webView canGoBack]) {
-    [_webView goBack];
-  }
-}
-
-- (void)forward {
-  if ([_webView canGoForward]) {
-    [_webView goForward];
-  }
-}
-
-- (void)stopLoading {
-  [_webView stopLoading];
-}
-
-- (BOOL)textFieldShouldReturn:(UITextField*)field {
-  [_webView loadURL:[NSURL URLWithString:[field text]]];
-  [field resignFirstResponder];
-  [self updateToolbar];
-  return YES;
-}
-
-- (void)updateToolbar {
-  // Do not update the URL if the text field is currently being edited.
-  if ([_field isFirstResponder]) {
-    return;
-  }
-
-  [_field setText:[[_webView visibleURL] absoluteString]];
-}
-
-#pragma mark CRIWVWebViewDelegate methods
-
-- (void)webView:(id<CRIWVWebView>)webView
-    didFinishLoadingWithURL:(NSURL*)url
-                loadSuccess:(BOOL)loadSuccess {
-  // TODO(crbug.com/679895): Add some visual indication that the page load has
-  // finished.
-  [self updateToolbar];
-}
-
-- (void)webView:(id<CRIWVWebView>)webView
-    didUpdateWithChanges:(CRIWVWebViewUpdateType)changes {
-  if (changes & CRIWVWebViewUpdateTypeProgress) {
-    // TODO(crbug.com/679895): Add a progress indicator.
-  }
-
-  if (changes & CRIWVWebViewUpdateTypeTitle) {
-    // TODO(crbug.com/679895): Add a title display.
-  }
-
-  if (changes & CRIWVWebViewUpdateTypeURL) {
-    [self updateToolbar];
-  }
-}
-
-- (id<CRIWVTranslateDelegate>)translateDelegate {
-  if (!_translateController)
-    self.translateController = [[TranslateController alloc] init];
-  return _translateController;
-}
-
-@end