Refactors building the system menu model into a common place

chrome/browser/ui/views/frame/system_menu_model_builder.cc

+// Copyright (c) 2013 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.
+
+#include "chrome/browser/ui/views/frame/system_menu_model_builder.h"
+
+#include "base/command_line.h"
+#include "base/utf_string_conversions.h"
+#include "chrome/app/chrome_command_ids.h"
+#include "chrome/browser/ui/browser_commands.h"
+#include "chrome/browser/ui/host_desktop.h"
+#include "chrome/browser/ui/toolbar/wrench_menu_model.h"
+#include "chrome/common/chrome_switches.h"
+#include "grit/generated_resources.h"
+#include "ui/base/accelerators/accelerator.h"
+#include "ui/base/models/simple_menu_model.h"
+
+#if defined(OS_WIN)
+#include "chrome/browser/ui/views/frame/system_menu_model.h"
+#endif
+
+SystemMenuModelBuilder::SystemMenuModelBuilder(
+    ui::AcceleratorProvider* provider,
+    Browser* browser)
+    : menu_delegate_(provider, browser) {
+}
+
+SystemMenuModelBuilder::~SystemMenuModelBuilder() {
+}
+
+void SystemMenuModelBuilder::Init() {
+  bool needs_trailing_separator = false;
+  ui::SimpleMenuModel* model = CreateMenuModel(&needs_trailing_separator);
+  menu_model_.reset(model);
+  BuildMenu(model);
+  if (needs_trailing_separator)
+    model->AddSeparator(ui::NORMAL_SEPARATOR);
+}
+
+ui::SimpleMenuModel* SystemMenuModelBuilder::CreateMenuModel(
+    bool* needs_trailing_separator) {
+#if defined(OS_WIN)
+  if (browser()->host_desktop_type() == chrome::HOST_DESKTOP_TYPE_NATIVE) {
+    *needs_trailing_separator = true;
+    return new SystemMenuModel(&menu_delegate_);
+  }
+#endif
+  *needs_trailing_separator = false;
+  return new ui::SimpleMenuModel(&menu_delegate_);
+}
+
+void SystemMenuModelBuilder::BuildMenu(ui::SimpleMenuModel* model) {
+  // We add the menu items in reverse order so that insertion_index never needs
+  // to change.
+  if (browser()->is_type_tabbed())
+    BuildSystemMenuForBrowserWindow(model);
+  else
+    BuildSystemMenuForAppOrPopupWindow(model);
+  AddFrameToggleItems(model);
+}
+
+void SystemMenuModelBuilder::BuildSystemMenuForBrowserWindow(
+    ui::SimpleMenuModel* model) {
+  model->AddItemWithStringId(IDC_NEW_TAB, IDS_NEW_TAB);
+  model->AddItemWithStringId(IDC_RESTORE_TAB, IDS_RESTORE_TAB);
+  if (chrome::CanOpenTaskManager()) {
+    model->AddSeparator(ui::NORMAL_SEPARATOR);
+    model->AddItemWithStringId(IDC_TASK_MANAGER, IDS_TASK_MANAGER);
+  }
+  // If it's a regular browser window with tabs, we don't add any more items,
+  // since it already has menus (Page, Chrome).
+}
+
+void SystemMenuModelBuilder::BuildSystemMenuForAppOrPopupWindow(
+    ui::SimpleMenuModel* model) {
+  model->AddItemWithStringId(IDC_BACK, IDS_CONTENT_CONTEXT_BACK);
+  model->AddItemWithStringId(IDC_FORWARD, IDS_CONTENT_CONTEXT_FORWARD);
+  model->AddItemWithStringId(IDC_RELOAD, IDS_APP_MENU_RELOAD);
+  model->AddSeparator(ui::NORMAL_SEPARATOR);
+  if (browser()->is_app())
+    model->AddItemWithStringId(IDC_NEW_TAB, IDS_APP_MENU_NEW_WEB_PAGE);
+  else
+    model->AddItemWithStringId(IDC_SHOW_AS_TAB, IDS_SHOW_AS_TAB);
+  model->AddSeparator(ui::NORMAL_SEPARATOR);
+  model->AddItemWithStringId(IDC_CUT, IDS_CUT);
+  model->AddItemWithStringId(IDC_COPY, IDS_COPY);
+  model->AddItemWithStringId(IDC_PASTE, IDS_PASTE);
+  model->AddSeparator(ui::NORMAL_SEPARATOR);
+  model->AddItemWithStringId(IDC_FIND, IDS_FIND);
+  model->AddItemWithStringId(IDC_PRINT, IDS_PRINT);
+  zoom_menu_contents_.reset(new ZoomMenuModel(&menu_delegate_));
+  model->AddSubMenuWithStringId(IDC_ZOOM_MENU, IDS_ZOOM_MENU,
+                                zoom_menu_contents_.get());
+  encoding_menu_contents_.reset(new EncodingMenuModel(browser()));
+  model->AddSubMenuWithStringId(IDC_ENCODING_MENU,
+                                IDS_ENCODING_MENU,
+                                encoding_menu_contents_.get());
+  if (browser()->is_app() && chrome::CanOpenTaskManager()) {
+    model->AddSeparator(ui::NORMAL_SEPARATOR);
+    model->AddItemWithStringId(IDC_TASK_MANAGER, IDS_TASK_MANAGER);
+  }
+}
+
+void SystemMenuModelBuilder::AddFrameToggleItems(ui::SimpleMenuModel* model) {
+  if (CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kDebugEnableFrameToggle)) {
+    model->AddSeparator(ui::NORMAL_SEPARATOR);
+    model->AddItem(IDC_DEBUG_FRAME_TOGGLE, ASCIIToUTF16("Toggle Frame Type"));
+  }
+}
+