gecko-dev/layout/xul/MenuBoxObject.cpp

153 строки
3.7 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/dom/MenuBoxObject.h"
#include "mozilla/dom/MenuBoxObjectBinding.h"
#include "mozilla/dom/KeyboardEvent.h"
#include "mozilla/dom/Element.h"
#include "nsIDOMKeyEvent.h"
#include "nsIFrame.h"
#include "nsMenuBarFrame.h"
#include "nsMenuBarListener.h"
#include "nsMenuFrame.h"
#include "nsMenuPopupFrame.h"
namespace mozilla {
namespace dom {
MenuBoxObject::MenuBoxObject()
{
}
MenuBoxObject::~MenuBoxObject()
{
}
JSObject* MenuBoxObject::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return MenuBoxObjectBinding::Wrap(aCx, this, aGivenProto);
}
void MenuBoxObject::OpenMenu(bool aOpenFlag)
{
nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
if (pm) {
nsIFrame* frame = GetFrame(false);
if (frame) {
if (aOpenFlag) {
nsCOMPtr<nsIContent> content = mContent;
pm->ShowMenu(content, false, false);
}
else {
nsMenuFrame* menu = do_QueryFrame(frame);
if (menu) {
nsMenuPopupFrame* popupFrame = menu->GetPopup();
if (popupFrame)
pm->HidePopup(popupFrame->GetContent(), false, true, false, false);
}
}
}
}
}
already_AddRefed<Element>
MenuBoxObject::GetActiveChild()
{
nsMenuFrame* menu = do_QueryFrame(GetFrame(false));
if (menu) {
nsCOMPtr<nsIDOMElement> el;
menu->GetActiveChild(getter_AddRefs(el));
nsCOMPtr<Element> ret(do_QueryInterface(el));
return ret.forget();
}
return nullptr;
}
void MenuBoxObject::SetActiveChild(Element* arg)
{
nsMenuFrame* menu = do_QueryFrame(GetFrame(false));
if (menu) {
nsCOMPtr<nsIDOMElement> el(do_QueryInterface(arg));
menu->SetActiveChild(el);
}
}
bool MenuBoxObject::HandleKeyPress(KeyboardEvent& keyEvent)
{
nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
if (!pm) {
return false;
}
// if event has already been handled, bail
bool eventHandled = false;
keyEvent.GetDefaultPrevented(&eventHandled);
if (eventHandled) {
return false;
}
if (nsMenuBarListener::IsAccessKeyPressed(&keyEvent))
return false;
nsMenuFrame* menu = do_QueryFrame(GetFrame(false));
if (!menu) {
return false;
}
nsMenuPopupFrame* popupFrame = menu->GetPopup();
if (!popupFrame) {
return false;
}
uint32_t keyCode = keyEvent.KeyCode();
switch (keyCode) {
case nsIDOMKeyEvent::DOM_VK_UP:
case nsIDOMKeyEvent::DOM_VK_DOWN:
case nsIDOMKeyEvent::DOM_VK_HOME:
case nsIDOMKeyEvent::DOM_VK_END:
{
nsNavigationDirection theDirection;
theDirection = NS_DIRECTION_FROM_KEY_CODE(popupFrame, keyCode);
return pm->HandleKeyboardNavigationInPopup(popupFrame, theDirection);
}
default:
return pm->HandleShortcutNavigation(&keyEvent, popupFrame);
}
}
bool MenuBoxObject::OpenedWithKey()
{
nsMenuFrame* menuframe = do_QueryFrame(GetFrame(false));
if (!menuframe) {
return false;
}
nsIFrame* frame = menuframe->GetParent();
while (frame) {
nsMenuBarFrame* menubar = do_QueryFrame(frame);
if (menubar) {
return menubar->IsActiveByKeyboard();
}
frame = frame->GetParent();
}
return false;
}
} // namespace dom
} // namespace mozilla
// Creation Routine ///////////////////////////////////////////////////////////////////////
using namespace mozilla::dom;
nsresult
NS_NewMenuBoxObject(nsIBoxObject** aResult)
{
NS_ADDREF(*aResult = new MenuBoxObject());
return NS_OK;
}