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

ios/chrome/browser/ui/tools_menu/tools_menu_view_item.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/ui/tools_menu/tools_menu_view_item.h"
+
+#include "base/i18n/rtl.h"
+#include "base/mac/objc_property_releaser.h"
+#import "ios/third_party/material_roboto_font_loader_ios/src/src/MaterialRobotoFontLoader.h"
+#include "ui/base/l10n/l10n_util.h"
+
+namespace {
+const CGFloat kToolsMenuItemHorizontalMargin = 16;
+// Increase the margin for RTL so the labels don't overlap the tools icon.
+const CGFloat kToolsMenuItemHorizontalMarginRTL = 25;
+static NSString* const kMenuItemCellID = @"MenuItemCellID";
+}
+
+@implementation ToolsMenuViewItem {
+  base::mac::ObjCPropertyReleaser _propertyReleaser_ToolsMenuViewItem;
+}
+
+@synthesize accessibilityIdentifier = _accessibilityIdentifier;
+@synthesize active = _active;
+@synthesize title = _title;
+@synthesize tag = _tag;
+@synthesize tableViewCell = _tableViewCell;
+
+- (id)init {
+  self = [super init];
+  if (self) {
+    _propertyReleaser_ToolsMenuViewItem.Init(self, [ToolsMenuViewItem class]);
+    _active = YES;
+  }
+
+  return self;
+}
+
++ (NSString*)cellID {
+  return kMenuItemCellID;
+}
+
++ (Class)cellClass {
+  return [ToolsMenuViewCell class];
+}
+
++ (instancetype)menuItemWithTitle:(NSString*)title
+          accessibilityIdentifier:(NSString*)accessibilityIdentifier
+                          command:(int)commandID {
+  ToolsMenuViewItem* menuItem = [[[self alloc] init] autorelease];
+  [menuItem setAccessibilityLabel:title];
+  [menuItem setAccessibilityIdentifier:accessibilityIdentifier];
+  [menuItem setTag:commandID];
+  [menuItem setTitle:title];
+
+  return menuItem;
+}
+
+@end
+
+@implementation ToolsMenuViewCell {
+  base::mac::ObjCPropertyReleaser _propertyReleaser_ToolsMenuViewCell;
+}
+
+@synthesize title = _title;
+@synthesize horizontalMargin = _horizontalMargin;
+
+- (instancetype)initWithCoder:(NSCoder*)aDecoder {
+  self = [super initWithCoder:aDecoder];
+  if (self)
+    [self commonInitialization];
+
+  return self;
+}
+
+- (instancetype)initWithFrame:(CGRect)frame {
+  self = [super initWithFrame:frame];
+  if (self)
+    [self commonInitialization];
+
+  return self;
+}
+
+- (void)commonInitialization {
+  _propertyReleaser_ToolsMenuViewCell.Init(self, [ToolsMenuViewCell class]);
+  _horizontalMargin = !base::i18n::IsRTL() ? kToolsMenuItemHorizontalMargin
+                                           : kToolsMenuItemHorizontalMarginRTL;
+  [self setBackgroundColor:[UIColor whiteColor]];
+  [self setOpaque:YES];
+}
+
+- (void)prepareForReuse {
+  [super prepareForReuse];
+  [_title setText:nil];
+  [self setAccessibilityIdentifier:nil];
+  [self setAccessibilityLabel:nil];
+}
+
+- (void)initializeTitleView {
+  _title = [[UILabel alloc] initWithFrame:self.bounds];
+  [_title setTranslatesAutoresizingMaskIntoConstraints:NO];
+  [_title setFont:[[MDFRobotoFontLoader sharedInstance] regularFontOfSize:16]];
+  [_title setBackgroundColor:[self backgroundColor]];
+  [_title setTextAlignment:(base::i18n::IsRTL() ? NSTextAlignmentRight
+                                                : NSTextAlignmentLeft)];
+  [_title setOpaque:YES];
+}
+
+- (void)initializeViews {
+  if (_title)
+    return;
+
+  [self initializeTitleView];
+
+  UIView* contentView = [self contentView];
+  [contentView setBackgroundColor:[self backgroundColor]];
+  [contentView setOpaque:YES];
+  [contentView addSubview:_title];
+
+  NSDictionary* view = @{ @"title" : _title };
+  NSString* vertical = @"V:|-(0)-[title]-(0)-|";
+  NSString* horizontal = @"H:|-(margin)-[title]-(25)-|";
+  NSDictionary* metrics = @{ @"margin" : @(self.horizontalMargin) };
+
+  [contentView
+      addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:vertical
+                                                             options:0
+                                                             metrics:nil
+                                                               views:view]];
+  [contentView
+      addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:horizontal
+                                                             options:0
+                                                             metrics:metrics
+                                                               views:view]];
+}
+
+- (void)configureForMenuItem:(ToolsMenuViewItem*)item {
+  [self initializeViews];
+
+  UIAccessibilityTraits traits = [self accessibilityTraits] |
+                                 UIAccessibilityTraitNotEnabled |
+                                 UIAccessibilityTraitButton;
+  UIColor* textColor = [UIColor lightGrayColor];
+  if ([item active]) {
+    textColor = [UIColor blackColor];
+    traits &= ~UIAccessibilityTraitNotEnabled;
+  }
+
+  [_title setTextColor:textColor];
+  [_title setText:[item title]];
+  [self setAccessibilityIdentifier:[item accessibilityIdentifier]];
+  [self setAccessibilityLabel:[item accessibilityLabel]];
+  [self setAccessibilityTraits:traits];
+  [self setIsAccessibilityElement:YES];
+  [self setTag:[item tag]];
+  item.tableViewCell = self;
+}
+
+@end