A non-GTK version of menus for touchui.

views/controls/menu/native_menu_x.cc

+// Copyright (c) 2010 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 "views/controls/menu/native_menu_x.h"
+
+#include "base/logging.h"
+#include "base/utf_string_conversions.h"
+#include "gfx/canvas_skia.h"
+#include "gfx/skia_util.h"
+#include "views/controls/menu/menu_2.h"
+#include "views/controls/menu/submenu_view.h"
+
+namespace views {
+
+NativeMenuX::NativeMenuX(Menu2* menu)
+    : model_(menu->model()),
+      ALLOW_THIS_IN_INITIALIZER_LIST(root_(new MenuItemView(this))) {
+}
+
+NativeMenuX::~NativeMenuX() {
+}
+
+// MenuWrapper implementation:
+void NativeMenuX::RunMenuAt(const gfx::Point& point, int alignment) {
+  UpdateStates();
+  root_->RunMenuAt(NULL, NULL, gfx::Rect(point, gfx::Size()),
+      alignment == Menu2::ALIGN_TOPLEFT ? MenuItemView::TOPLEFT :
+      MenuItemView::TOPRIGHT, true);
+}
+
+void NativeMenuX::CancelMenu() {
+  NOTIMPLEMENTED();
+}
+
+void NativeMenuX::Rebuild() {
+  if (SubmenuView* submenu = root_->GetSubmenu()) {
+    submenu->RemoveAllChildViews(true);
+  }
+  AddMenuItemsFromModel(root_.get(), model_);
+}
+
+void NativeMenuX::UpdateStates() {
+  SubmenuView* submenu = root_->CreateSubmenu();
+  UpdateMenuFromModel(submenu, model_);
+}
+
+gfx::NativeMenu NativeMenuX::GetNativeMenu() const {
+  NOTIMPLEMENTED();
+  return NULL;
+}
+
+MenuWrapper::MenuAction NativeMenuX::GetMenuAction() const {
+  NOTIMPLEMENTED();
+  return MENU_ACTION_NONE;
+}
+
+void NativeMenuX::AddMenuListener(MenuListener* listener) {
+  NOTIMPLEMENTED();
+}
+
+void NativeMenuX::RemoveMenuListener(MenuListener* listener) {
+  NOTIMPLEMENTED();
+}
+
+void NativeMenuX::SetMinimumWidth(int width) {
+  NOTIMPLEMENTED();
+}
+
+// MenuDelegate implementation
+
+bool NativeMenuX::IsItemChecked(int cmd) const {
+  int index;
+  menus::MenuModel* model = model_;
+  if (!menus::MenuModel::GetModelAndIndexForCommandId(cmd, &model, &index))
+    return false;
+  return model->IsItemCheckedAt(index);
+}
+
+bool NativeMenuX::IsCommandEnabled(int cmd) const {
+  int index;
+  menus::MenuModel* model = model_;
+  if (!menus::MenuModel::GetModelAndIndexForCommandId(cmd, &model, &index))
+    return false;
+  return model->IsEnabledAt(index);
+}
+
+void NativeMenuX::ExecuteCommand(int cmd) {
+  int index;
+  menus::MenuModel* model = model_;
+  if (!menus::MenuModel::GetModelAndIndexForCommandId(cmd, &model, &index))
+    return;
+  model->ActivatedAt(index);
+}
+
+bool NativeMenuX::GetAccelerator(int id, views::Accelerator* accelerator) {
+  int index;
+  menus::MenuModel* model = model_;
+  if (!menus::MenuModel::GetModelAndIndexForCommandId(id, &model, &index))
+    return false;
+
+  menus::Accelerator menu_accelerator;
+  if (!model->GetAcceleratorAt(index, &menu_accelerator))
+    return false;
+
+  *accelerator = views::Accelerator(menu_accelerator.GetKeyCode(),
+                                    menu_accelerator.modifiers());
+  return true;
+}
+
+// private
+void NativeMenuX::AddMenuItemsFromModel(MenuItemView* parent,
+                                        menus::MenuModel* model) {
+  for (int i = 0; i < model->GetItemCount(); ++i) {
+    int index = i + model->GetFirstItemIndex(NULL);
+    MenuItemView* child = parent->AppendMenuItemFromModel(model, index,
+        model->GetCommandIdAt(index));
+
+    if (child && child->GetType() == MenuItemView::SUBMENU) {
+      AddMenuItemsFromModel(child, model->GetSubmenuModelAt(index));
+    }
+  }
+}
+
+void NativeMenuX::UpdateMenuFromModel(SubmenuView* menu,
+                                      menus::MenuModel* model) {
+  for (int i = 0, sep = 0; i < model->GetItemCount(); ++i) {
+    int index = i + model->GetFirstItemIndex(NULL);
+    if (model->GetTypeAt(index) == menus::MenuModel::TYPE_SEPARATOR) {
+      ++sep;
+      continue;
+    }
+
+    // The submenu excludes the separators when counting the menu-items
+    // in it. So exclude the number of separators to get the correct index.
+    MenuItemView* mitem = menu->GetMenuItemAt(index - sep);
+    mitem->SetVisible(model->IsVisibleAt(index));
+    mitem->SetEnabled(model->IsEnabledAt(index));
+    if (model->IsLabelDynamicAt(index)) {
+      mitem->SetTitle(UTF16ToWide(model->GetLabelAt(index)));
+    }
+
+    SkBitmap icon;
+    if (model->GetIconAt(index, &icon)) {
+      mitem->SetIcon(icon);
+    }
+
+    if (model->GetTypeAt(index) == menus::MenuModel::TYPE_SUBMENU) {
+      DCHECK(mitem->HasSubmenu());
+      UpdateMenuFromModel(mitem->GetSubmenu(), model->GetSubmenuModelAt(index));
+    }
+  }
+}
+
+// MenuWrapper, public:
+
+// static
+MenuWrapper* MenuWrapper::CreateWrapper(Menu2* menu) {
+  return new NativeMenuX(menu);
+}
+
+}  // namespace views