The Tor Browser: accessible/src/xul/XULComboboxAccessible.cpp@b8a032363ba2 (annotated)

accessible/src/xul/XULComboboxAccessible.cpp@b8a032363ba2 (annotated)

accessible/src/xul/XULComboboxAccessible.cpp

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* 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 "XULComboboxAccessible.h"
 #include "Accessible-inl.h"
 #include "nsAccessibilityService.h"
 #include "DocAccessible.h"
 #include "nsCoreUtils.h"
 #include "Role.h"
 #include "States.h"
 #include "nsIAutoCompleteInput.h"
 #include "nsIDOMXULMenuListElement.h"
 #include "nsIDOMXULSelectCntrlItemEl.h"
 using namespace mozilla::a11y;
 ////////////////////////////////////////////////////////////////////////////////
 // XULComboboxAccessible
 ////////////////////////////////////////////////////////////////////////////////
 XULComboboxAccessible::
   XULComboboxAccessible(nsIContent* aContent, DocAccessible* aDoc) :
   AccessibleWrap(aContent, aDoc)
 {
   if (mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::type,
                             nsGkAtoms::autocomplete, eIgnoreCase))
     mGenericTypes |= eAutoComplete;
   else
     mGenericTypes |= eCombobox;
 }
 role
 XULComboboxAccessible::NativeRole()
 {
   return IsAutoComplete() ? roles::AUTOCOMPLETE : roles::COMBOBOX;
 }
 uint64_t
 XULComboboxAccessible::NativeState()
 {
   // As a nsComboboxAccessible we can have the following states:
   //     STATE_FOCUSED
   //     STATE_FOCUSABLE
   //     STATE_HASPOPUP
   //     STATE_EXPANDED
   //     STATE_COLLAPSED
   // Get focus status from base class
   uint64_t state = Accessible::NativeState();
   nsCOMPtr<nsIDOMXULMenuListElement> menuList(do_QueryInterface(mContent));
   if (menuList) {
     bool isOpen = false;
     menuList->GetOpen(&isOpen);
     if (isOpen)
       state |= states::EXPANDED;
     else
       state |= states::COLLAPSED;
   }
   return state | states::HASPOPUP;
 }
 void
 XULComboboxAccessible::Description(nsString& aDescription)
 {
   aDescription.Truncate();
   // Use description of currently focused option
   nsCOMPtr<nsIDOMXULMenuListElement> menuListElm(do_QueryInterface(mContent));
   if (!menuListElm)
     return;
   nsCOMPtr<nsIDOMXULSelectControlItemElement> focusedOptionItem;
   menuListElm->GetSelectedItem(getter_AddRefs(focusedOptionItem));
   nsCOMPtr<nsIContent> focusedOptionContent =
     do_QueryInterface(focusedOptionItem);
   if (focusedOptionContent && mDoc) {
     Accessible* focusedOptionAcc = mDoc->GetAccessible(focusedOptionContent);
     if (focusedOptionAcc)
       focusedOptionAcc->Description(aDescription);
   }
 }
 void
 XULComboboxAccessible::Value(nsString& aValue)
 {
   aValue.Truncate();
   // The value is the option or text shown entered in the combobox.
   nsCOMPtr<nsIDOMXULMenuListElement> menuList(do_QueryInterface(mContent));
   if (menuList)
     menuList->GetLabel(aValue);
 }
 bool
 XULComboboxAccessible::CanHaveAnonChildren()
 {
   if (mContent->NodeInfo()->Equals(nsGkAtoms::textbox, kNameSpaceID_XUL) ||
       mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::editable,
                             nsGkAtoms::_true, eIgnoreCase)) {
     // Both the XUL <textbox type="autocomplete"> and <menulist editable="true"> widgets
     // use XULComboboxAccessible. We need to walk the anonymous children for these
     // so that the entry field is a child
     return true;
   }
   // Argument of false indicates we don't walk anonymous children for
   // menuitems
   return false;
 }
 uint8_t
 XULComboboxAccessible::ActionCount()
 {
   // Just one action (click).
   return 1;
 }
 NS_IMETHODIMP
 XULComboboxAccessible::DoAction(uint8_t aIndex)
 {
   if (aIndex != XULComboboxAccessible::eAction_Click) {
     return NS_ERROR_INVALID_ARG;
   }
   if (IsDefunct())
     return NS_ERROR_FAILURE;
   // Programmaticaly toggle the combo box.
   nsCOMPtr<nsIDOMXULMenuListElement> menuList(do_QueryInterface(mContent));
   if (!menuList) {
     return NS_ERROR_FAILURE;
   }
   bool isDroppedDown;
   menuList->GetOpen(&isDroppedDown);
   return menuList->SetOpen(!isDroppedDown);
 }
 NS_IMETHODIMP
 XULComboboxAccessible::GetActionName(uint8_t aIndex, nsAString& aName)
 {
   if (aIndex != XULComboboxAccessible::eAction_Click) {
     return NS_ERROR_INVALID_ARG;
   }
   if (IsDefunct())
     return NS_ERROR_FAILURE;
   // Our action name is the reverse of our state:
   //     if we are close -> open is our name.
   //     if we are open -> close is our name.
   // Uses the frame to get the state, updated on every click.
   nsCOMPtr<nsIDOMXULMenuListElement> menuList(do_QueryInterface(mContent));
   if (!menuList) {
     return NS_ERROR_FAILURE;
   }
   bool isDroppedDown;
   menuList->GetOpen(&isDroppedDown);
   if (isDroppedDown)
     aName.AssignLiteral("close");
   else
     aName.AssignLiteral("open");
   return NS_OK;
 }
 ////////////////////////////////////////////////////////////////////////////////
 // Widgets
 bool
 XULComboboxAccessible::IsActiveWidget() const
 {
   if (IsAutoComplete() ||
      mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::editable,
                            nsGkAtoms::_true, eIgnoreCase)) {
     int32_t childCount = mChildren.Length();
     for (int32_t idx = 0; idx < childCount; idx++) {
       Accessible* child = mChildren[idx];
       if (child->Role() == roles::ENTRY)
         return FocusMgr()->HasDOMFocus(child->GetContent());
     }
     return false;
   }
   return FocusMgr()->HasDOMFocus(mContent);
 }
 bool
 XULComboboxAccessible::AreItemsOperable() const
 {
   if (IsAutoComplete()) {
     nsCOMPtr<nsIAutoCompleteInput> autoCompleteInputElm =
       do_QueryInterface(mContent);
     if (autoCompleteInputElm) {
       bool isOpen = false;
       autoCompleteInputElm->GetPopupOpen(&isOpen);
       return isOpen;
     }
     return false;
   }
   nsCOMPtr<nsIDOMXULMenuListElement> menuListElm = do_QueryInterface(mContent);
   if (menuListElm) {
     bool isOpen = false;
     menuListElm->GetOpen(&isOpen);
     return isOpen;
   }
   return false;
 }

The Tor Browser / annotate

accessible/src/xul/XULComboboxAccessible.cpp@b8a032363ba2 (annotated)

accessible/src/xul/XULComboboxAccessible.cpp