dom/xul/XULMenuElement.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "mozilla/dom/KeyboardEvent.h"
   8 #include "mozilla/dom/KeyboardEventBinding.h"
   9 #include "mozilla/dom/Element.h"
  10 #include "nsIFrame.h"
  11 #include "nsMenuBarFrame.h"
  12 #include "nsMenuBarListener.h"
  13 #include "nsMenuFrame.h"
  14 #include "nsMenuPopupFrame.h"
  15 #include "mozilla/dom/XULMenuElement.h"
  16 #include "mozilla/dom/XULMenuElementBinding.h"
  17 #include "nsXULPopupManager.h"
  18
  19 namespace mozilla {
  20 namespace dom {
  21
  22 JSObject* XULMenuElement::WrapNode(JSContext* aCx,
  23                                    JS::Handle<JSObject*> aGivenProto) {
  24   return XULMenuElement_Binding::Wrap(aCx, this, aGivenProto);
  25 }
  26
  27 already_AddRefed<Element> XULMenuElement::GetActiveChild() {
  28   nsMenuFrame* menu = do_QueryFrame(GetPrimaryFrame(FlushType::Frames));
  29   if (menu) {
  30     RefPtr<Element> el;
  31     menu->GetActiveChild(getter_AddRefs(el));
  32     return el.forget();
  33   }
  34   return nullptr;
  35 }
  36
  37 void XULMenuElement::SetActiveChild(Element* arg) {
  38   nsMenuFrame* menu = do_QueryFrame(GetPrimaryFrame(FlushType::Frames));
  39   if (menu) {
  40     menu->SetActiveChild(arg);
  41   }
  42 }
  43
  44 bool XULMenuElement::HandleKeyPress(KeyboardEvent& keyEvent) {
  45   nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
  46   if (!pm) {
  47     return false;
  48   }
  49
  50   // if event has already been handled, bail
  51   if (keyEvent.DefaultPrevented()) {
  52     return false;
  53   }
  54
  55   if (nsMenuBarListener::IsAccessKeyPressed(&keyEvent)) return false;
  56
  57   nsMenuFrame* menu = do_QueryFrame(GetPrimaryFrame(FlushType::Frames));
  58   if (!menu) {
  59     return false;
  60   }
  61
  62   nsMenuPopupFrame* popupFrame = menu->GetPopup();
  63   if (!popupFrame) {
  64     return false;
  65   }
  66
  67   uint32_t keyCode = keyEvent.KeyCode();
  68   switch (keyCode) {
  69     case KeyboardEvent_Binding::DOM_VK_UP:
  70     case KeyboardEvent_Binding::DOM_VK_DOWN:
  71     case KeyboardEvent_Binding::DOM_VK_HOME:
  72     case KeyboardEvent_Binding::DOM_VK_END: {
  73       nsNavigationDirection theDirection;
  74       theDirection = NS_DIRECTION_FROM_KEY_CODE(popupFrame, keyCode);
  75       return pm->HandleKeyboardNavigationInPopup(popupFrame, theDirection);
  76     }
  77     default:
  78       return pm->HandleShortcutNavigation(&keyEvent, popupFrame);
  79   }
  80 }
  81
  82 bool XULMenuElement::OpenedWithKey() {
  83   nsMenuFrame* menuframe = do_QueryFrame(GetPrimaryFrame(FlushType::Frames));
  84   if (!menuframe) {
  85     return false;
  86   }
  87
  88   nsIFrame* frame = menuframe->GetParent();
  89   while (frame) {
  90     nsMenuBarFrame* menubar = do_QueryFrame(frame);
  91     if (menubar) {
  92       return menubar->IsActiveByKeyboard();
  93     }
  94     frame = frame->GetParent();
  95   }
  96   return false;
  97 }
  98
  99 }  // namespace dom
 100 }  // namespace mozilla