It is time.

ui/views/controls/menu/menu_host.cc

-// Copyright (c) 2012 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 "ui/views/controls/menu/menu_host.h"
-
-#include "base/auto_reset.h"
-#include "base/debug/trace_event.h"
-#include "ui/events/gestures/gesture_recognizer.h"
-#include "ui/gfx/path.h"
-#include "ui/native_theme/native_theme.h"
-#include "ui/views/controls/menu/menu_controller.h"
-#include "ui/views/controls/menu/menu_host_root_view.h"
-#include "ui/views/controls/menu/menu_item_view.h"
-#include "ui/views/controls/menu/menu_scroll_view_container.h"
-#include "ui/views/controls/menu/submenu_view.h"
-#include "ui/views/round_rect_painter.h"
-#include "ui/views/widget/native_widget_private.h"
-#include "ui/views/widget/widget.h"
-
-namespace views {
-
-////////////////////////////////////////////////////////////////////////////////
-// MenuHost, public:
-
-MenuHost::MenuHost(SubmenuView* submenu)
-    : submenu_(submenu),
-      destroying_(false),
-      ignore_capture_lost_(false) {
-  set_auto_release_capture(false);
-}
-
-MenuHost::~MenuHost() {
-}
-
-void MenuHost::InitMenuHost(Widget* parent,
-                            const gfx::Rect& bounds,
-                            View* contents_view,
-                            bool do_capture) {
-  TRACE_EVENT0("views", "MenuHost::InitMenuHost");
-  Widget::InitParams params(Widget::InitParams::TYPE_MENU);
-  const MenuController* menu_controller =
-      submenu_->GetMenuItem()->GetMenuController();
-  const MenuConfig& menu_config = submenu_->GetMenuItem()->GetMenuConfig();
-  bool rounded_border = menu_controller && menu_config.corner_radius > 0;
-  bool bubble_border = submenu_->GetScrollViewContainer() &&
-                       submenu_->GetScrollViewContainer()->HasBubbleBorder();
-  params.shadow_type = bubble_border ? Widget::InitParams::SHADOW_TYPE_NONE
-                                     : Widget::InitParams::SHADOW_TYPE_DROP;
-  params.opacity = (bubble_border || rounded_border) ?
-      Widget::InitParams::TRANSLUCENT_WINDOW :
-      Widget::InitParams::OPAQUE_WINDOW;
-  params.parent = parent ? parent->GetNativeView() : NULL;
-  params.bounds = bounds;
-  Init(params);
-
-  SetContentsView(contents_view);
-  ShowMenuHost(do_capture);
-}
-
-bool MenuHost::IsMenuHostVisible() {
-  return IsVisible();
-}
-
-void MenuHost::ShowMenuHost(bool do_capture) {
-  // Doing a capture may make us get capture lost. Ignore it while we're in the
-  // process of showing.
-  base::AutoReset<bool> reseter(&ignore_capture_lost_, true);
-  ShowInactive();
-  if (do_capture) {
-    // Cancel existing touches, so we don't miss some touch release/cancel
-    // events due to the menu taking capture.
-    ui::GestureRecognizer::Get()->TransferEventsTo(NULL, NULL);
-    native_widget_private()->SetCapture();
-  }
-}
-
-void MenuHost::HideMenuHost() {
-  ignore_capture_lost_ = true;
-  ReleaseMenuHostCapture();
-  Hide();
-  ignore_capture_lost_ = false;
-}
-
-void MenuHost::DestroyMenuHost() {
-  HideMenuHost();
-  destroying_ = true;
-  static_cast<MenuHostRootView*>(GetRootView())->ClearSubmenu();
-  Close();
-}
-
-void MenuHost::SetMenuHostBounds(const gfx::Rect& bounds) {
-  SetBounds(bounds);
-}
-
-void MenuHost::ReleaseMenuHostCapture() {
-  if (native_widget_private()->HasCapture())
-    native_widget_private()->ReleaseCapture();
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// MenuHost, Widget overrides:
-
-internal::RootView* MenuHost::CreateRootView() {
-  return new MenuHostRootView(this, submenu_);
-}
-
-void MenuHost::OnMouseCaptureLost() {
-  if (destroying_ || ignore_capture_lost_)
-    return;
-  MenuController* menu_controller =
-      submenu_->GetMenuItem()->GetMenuController();
-  if (menu_controller && !menu_controller->drag_in_progress())
-    menu_controller->CancelAll();
-  Widget::OnMouseCaptureLost();
-}
-
-void MenuHost::OnNativeWidgetDestroyed() {
-  if (!destroying_) {
-    // We weren't explicitly told to destroy ourselves, which means the menu was
-    // deleted out from under us (the window we're parented to was closed). Tell
-    // the SubmenuView to drop references to us.
-    submenu_->MenuHostDestroyed();
-  }
-  Widget::OnNativeWidgetDestroyed();
-}
-
-void MenuHost::OnOwnerClosing() {
-  if (destroying_)
-    return;
-
-  MenuController* menu_controller =
-      submenu_->GetMenuItem()->GetMenuController();
-  if (menu_controller && !menu_controller->drag_in_progress())
-    menu_controller->CancelAll();
-}
-
-void MenuHost::OnDragWillStart() {
-  MenuController* menu_controller =
-      submenu_->GetMenuItem()->GetMenuController();
-  DCHECK(menu_controller);
-  menu_controller->OnDragWillStart();
-}
-
-void MenuHost::OnDragComplete() {
-  MenuController* menu_controller =
-      submenu_->GetMenuItem()->GetMenuController();
-  if (destroying_ || !menu_controller)
-    return;
-
-  bool should_close = true;
-  // If the view came from outside menu code (i.e., not a MenuItemView), we
-  // should consult the MenuDelegate to determine whether or not to close on
-  // exit.
-  if (!menu_controller->did_initiate_drag()) {
-    MenuDelegate* menu_delegate = submenu_->GetMenuItem()->GetDelegate();
-    should_close =
-      menu_delegate ? menu_delegate->ShouldCloseOnDragComplete() : should_close;
-  }
-  menu_controller->OnDragComplete(should_close);
-
-  // We may have lost capture in the drag and drop, but are remaining open.
-  // Return capture so we get MouseCaptureLost events.
-  if (!should_close)
-    native_widget_private()->SetCapture();
-}
-
-}  // namespace views