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/* -*- 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;
// 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. Otherwise no XBL children.
if (!mContent->NodeInfo()->Equals(nsGkAtoms::textbox, kNameSpaceID_XUL) &&
!mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::editable,
nsGkAtoms::_true, eIgnoreCase)) {
mStateFlags |= eNoXBLKids;
}
}
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);
}
uint8_t
XULComboboxAccessible::ActionCount()
{
// Just one action (click).
return 1;
}
bool
XULComboboxAccessible::DoAction(uint8_t aIndex)
{
if (aIndex != XULComboboxAccessible::eAction_Click)
return false;
// Programmaticaly toggle the combo box.
nsCOMPtr<nsIDOMXULMenuListElement> menuList(do_QueryInterface(mContent));
if (!menuList)
return false;
bool isDroppedDown = false;
menuList->GetOpen(&isDroppedDown);
menuList->SetOpen(!isDroppedDown);
return true;
}
void
XULComboboxAccessible::ActionNameAt(uint8_t aIndex, nsAString& aName)
{
aName.Truncate();
if (aIndex != XULComboboxAccessible::eAction_Click)
return;
nsCOMPtr<nsIDOMXULMenuListElement> menuList(do_QueryInterface(mContent));
if (!menuList)
return;
bool isDroppedDown = false;
menuList->GetOpen(&isDroppedDown);
if (isDroppedDown)
aName.AssignLiteral("close");
else
aName.AssignLiteral("open");
}
////////////////////////////////////////////////////////////////////////////////
// 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;
}
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