[ios] Creates ToolsMenuModel Class

ios/chrome/browser/ui/tools_menu/tools_menu_model.h

+// Copyright 2017 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.
+
+#ifndef IOS_CHROME_BROWSER_UI_TOOLS_MENU_TOOLS_MENU_MODEL_H_
+#define IOS_CHROME_BROWSER_UI_TOOLS_MENU_TOOLS_MENU_MODEL_H_
+
+#import <Foundation/Foundation.h>
+
+// New Tab item accessibility Identifier.
+extern NSString* const kToolsMenuNewTabId;
+// New incognito Tab item accessibility Identifier.
+extern NSString* const kToolsMenuNewIncognitoTabId;
+// Close all Tabs item accessibility Identifier.
+extern NSString* const kToolsMenuCloseAllTabsId;
+// Close all incognito Tabs item accessibility Identifier.
+extern NSString* const kToolsMenuCloseAllIncognitoTabsId;
+// Bookmarks item accessibility Identifier.
+extern NSString* const kToolsMenuBookmarksId;
+// Reading List item accessibility Identifier.
+extern NSString* const kToolsMenuReadingListId;
+// Other Devices item accessibility Identifier.
+extern NSString* const kToolsMenuOtherDevicesId;
+// History item accessibility Identifier.
+extern NSString* const kToolsMenuHistoryId;
+// Report an issue item accessibility Identifier.
+extern NSString* const kToolsMenuReportAnIssueId;
+// Find in Page item accessibility Identifier.
+extern NSString* const kToolsMenuFindInPageId;
+// Reader Mode item accessibility Identifier.
+extern NSString* const kToolsMenuReaderMode;
+// Request desktop item accessibility Identifier.
+extern NSString* const kToolsMenuRequestDesktopId;
+// Settings item accessibility Identifier.
+extern NSString* const kToolsMenuSettingsId;
+// Help item accessibility Identifier.
+extern NSString* const kToolsMenuHelpId;
+// Suggestions item accessibility Identifier.
+extern NSString* const kToolsMenuSuggestionsId;
+
+// Total number of possible menu items.
+const int kToolsMenuNumberOfItems = 15;
+
+// Initialization table for all possible commands to initialize the
+// tools menu at run time. Data initialized into this structure is not mutable.
+struct MenuItemInfo {
+  int title_id;
+  NSString* accessibility_id;
+  int command_id;
+  int toolbar_types;
+  // |visibility| is applied if a menu item is included for a given
+  // |toolbar_types|. A value of 0 means the menu item is always visible for
+  // the given |toolbar_types|.
+  int visibility;
+  // Custom class, if any, for the menu item, or |nil|.
+  Class item_class;
+};
+
+// Flags for different toolbar types
+typedef NS_OPTIONS(NSUInteger, kToolbarType) {

[marq (ping after 24h), 2017/02/22 18:39:05]

Please, in this CL, change kToolbarType to ToolbarType. We can fix the enum name
style later, but we can't have a type name beginning with 'k'.

[sczs, 2017/02/22 21:38:39]

Done.

+  // clang-format off
+  kToolbarTypeNone            = 0,
+  kToolbarTypeWebiPhone       = 1 << 0,
+  kToolbarTypeWebiPad         = 1 << 1,
+  kToolbarTypeNoTabsiPad      = 1 << 2,
+  kToolbarTypeSwitcheriPhone  = 1 << 3,
+  kToolbarTypeWebAll          = kToolbarTypeWebiPhone | kToolbarTypeWebiPad,
+  kToolbarTypeAll             = kToolbarTypeWebAll |
+  kToolbarTypeSwitcheriPhone |

[marq (ping after 24h), 2017/02/22 18:39:06]

Align the 'k's on this and the next line with the 'k' after the equals sign on
the line above.

[sczs, 2017/02/22 21:38:39]

Done.

+  kToolbarTypeNoTabsiPad,
+  // clang-format on
+};
+
+// All possible items.
+extern const MenuItemInfo itemInfoList[kToolsMenuNumberOfItems];
+
+// Returns true if a given item should be visible based on the Toolbar type
+// and if incognito mode or not.
+bool ToolsMenuItemShouldBeVisible(const MenuItemInfo& item,
+                                  bool incognito,
+                                  kToolbarType toolbarType);
+
+#endif  // IOS_CHROME_BROWSER_UI_TOOLS_MENU_TOOLS_MENU_MODEL_H_