Upstream Chrome on iOS source code [9/11].

ios/chrome/browser/ui/toolbar/toolbar_view_controller.mm

+// Copyright 2016 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.
+
+// ======                        New Architecture                         =====
+// =         This code is only used in the new iOS Chrome architecture.       =
+// ============================================================================
+
+#import "ios/chrome/browser/ui/toolbar/toolbar_view_controller.h"
+
+#import "ios/chrome/browser/ui/actions/tab_grid_actions.h"
+#import "ios/chrome/browser/ui/actions/tools_menu_actions.h"
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+@interface ToolbarViewController ()<ToolsMenuActions>
+@property(nonatomic, weak) UITextField* omnibox;
+@property(nonatomic, weak) UIButton* toolsMenu;
+@end
+
+@implementation ToolbarViewController
+@synthesize actionDelegate = _actionDelegate;
+@synthesize omnibox = _omnibox;
+@synthesize toolsMenu = _toolsMenu;
+
+- (void)viewDidLoad {
+  self.view.backgroundColor = [UIColor lightGrayColor];
+
+  // Tab switcher button.
+  UIButton* tabSwitcher = [UIButton buttonWithType:UIButtonTypeSystem];
+  tabSwitcher.translatesAutoresizingMaskIntoConstraints = NO;
+  [tabSwitcher setTitle:@"⊞" forState:UIControlStateNormal];
+  tabSwitcher.titleLabel.font = [UIFont systemFontOfSize:24.0];
+  [tabSwitcher addTarget:nil
+                  action:@selector(showTabGrid:)
+        forControlEvents:UIControlEventTouchUpInside];
+
+  // Placeholder omnibox.
+  UITextField* omnibox = [[UITextField alloc] initWithFrame:CGRectZero];
+  omnibox.translatesAutoresizingMaskIntoConstraints = NO;
+  omnibox.backgroundColor = [UIColor whiteColor];
+  omnibox.enabled = NO;
+  self.omnibox = omnibox;
+
+  // Tools menu button.
+  UIButton* toolsMenu = [UIButton buttonWithType:UIButtonTypeSystem];
+  toolsMenu.translatesAutoresizingMaskIntoConstraints = NO;
+  [toolsMenu setTitle:@"⋮" forState:UIControlStateNormal];
+  toolsMenu.titleLabel.font = [UIFont systemFontOfSize:24.0];
+  [toolsMenu addTarget:nil
+                action:@selector(showToolsMenu:)
+      forControlEvents:UIControlEventTouchUpInside];
+  self.toolsMenu = toolsMenu;
+
+  // Stack view to contain toolbar items.
+  UIStackView* toolbarItems = [[UIStackView alloc]
+      initWithArrangedSubviews:@[ tabSwitcher, omnibox, toolsMenu ]];
+  toolbarItems.translatesAutoresizingMaskIntoConstraints = NO;
+  toolbarItems.spacing = 16.0;
+  toolbarItems.distribution = UIStackViewDistributionFillProportionally;
+  [self.view addSubview:toolbarItems];
+  [NSLayoutConstraint activateConstraints:@[
+    [toolbarItems.leadingAnchor
+        constraintEqualToAnchor:self.view.layoutMarginsGuide.leadingAnchor],
+    [toolbarItems.trailingAnchor
+        constraintEqualToAnchor:self.view.layoutMarginsGuide.trailingAnchor],
+    [toolbarItems.bottomAnchor
+        constraintEqualToAnchor:self.view.layoutMarginsGuide.bottomAnchor],
+  ]];
+}
+
+#pragma mark - Public API
+
+- (void)setCurrentPageText:(NSString*)text {
+  self.omnibox.text = text;
+}
+
+#pragma mark - ZoomTransitionDelegate
+
+- (CGRect)rectForZoomWithKey:(NSObject*)key inView:(UIView*)view {
+  return [view convertRect:self.toolsMenu.bounds fromView:self.toolsMenu];
+}
+
+#pragma mark - ToolsMenuActions
+
+- (void)showToolsMenu:(id)sender {
+  [self.actionDelegate showToolsMenu];
+}
+
+- (void)closeToolsMenu:(id)sender {
+  [self.actionDelegate closeToolsMenu];
+}
+
+@end