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// 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_root_view.h"
#include "ui/views/controls/menu/menu_controller.h"
#include "ui/views/controls/menu/menu_item_view.h"
#include "ui/views/controls/menu/submenu_view.h"
namespace views {
MenuHostRootView::MenuHostRootView(Widget* widget,
SubmenuView* submenu)
: internal::RootView(widget),
submenu_(submenu),
forward_drag_to_menu_controller_(true) {
}
bool MenuHostRootView::OnMousePressed(const ui::MouseEvent& event) {
forward_drag_to_menu_controller_ =
!GetLocalBounds().Contains(event.location()) ||
!RootView::OnMousePressed(event) ||
DoesEventTargetEmptyMenuItem(event);
if (forward_drag_to_menu_controller_ && GetMenuController())
GetMenuController()->OnMousePressed(submenu_, event);
return true;
}
bool MenuHostRootView::OnMouseDragged(const ui::MouseEvent& event) {
if (forward_drag_to_menu_controller_ && GetMenuController()) {
GetMenuController()->OnMouseDragged(submenu_, event);
return true;
}
return RootView::OnMouseDragged(event);
}
void MenuHostRootView::OnMouseReleased(const ui::MouseEvent& event) {
RootView::OnMouseReleased(event);
if (forward_drag_to_menu_controller_ && GetMenuController()) {
forward_drag_to_menu_controller_ = false;
GetMenuController()->OnMouseReleased(submenu_, event);
}
}
void MenuHostRootView::OnMouseMoved(const ui::MouseEvent& event) {
RootView::OnMouseMoved(event);
if (GetMenuController())
GetMenuController()->OnMouseMoved(submenu_, event);
}
bool MenuHostRootView::OnMouseWheel(const ui::MouseWheelEvent& event) {
return GetMenuController() &&
GetMenuController()->OnMouseWheel(submenu_, event);
}
void MenuHostRootView::DispatchGestureEvent(ui::GestureEvent* event) {
RootView::DispatchGestureEvent(event);
if (event->handled())
return;
// ChromeOS uses MenuController to forward events like other
// mouse events.
if (!GetMenuController())
return;
GetMenuController()->OnGestureEvent(submenu_, event);
}
MenuController* MenuHostRootView::GetMenuController() {
return submenu_ ? submenu_->GetMenuItem()->GetMenuController() : NULL;
}
bool MenuHostRootView::DoesEventTargetEmptyMenuItem(
const ui::MouseEvent& event) {
View* view = GetEventHandlerForPoint(event.location());
return view && view->id() == MenuItemView::kEmptyMenuItemViewID;
}
} // namespace views
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