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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 "mozilla/dom/Element.h"
#include "nsIDOMXULMenuListElement.h"
using namespace mozilla::a11y;
////////////////////////////////////////////////////////////////////////////////
// XULComboboxAccessible
////////////////////////////////////////////////////////////////////////////////
XULComboboxAccessible::XULComboboxAccessible(nsIContent* aContent,
DocAccessible* aDoc)
: AccessibleWrap(aContent, aDoc) {
mGenericTypes |= eCombobox;
}
role XULComboboxAccessible::NativeRole() const { return roles::COMBOBOX; }
uint64_t XULComboboxAccessible::NativeState() const {
// 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 = Elm()->AsXULMenuList();
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 = Elm()->AsXULMenuList();
if (!menuListElm) return;
nsCOMPtr<dom::Element> focusedOptionItem;
menuListElm->GetSelectedItem(getter_AddRefs(focusedOptionItem));
if (focusedOptionItem && mDoc) {
Accessible* focusedOptionAcc = mDoc->GetAccessible(focusedOptionItem);
if (focusedOptionAcc) focusedOptionAcc->Description(aDescription);
}
}
void XULComboboxAccessible::Value(nsString& aValue) const {
aValue.Truncate();
// The value is the option or text shown entered in the combobox.
nsCOMPtr<nsIDOMXULMenuListElement> menuList = Elm()->AsXULMenuList();
if (menuList) menuList->GetLabel(aValue);
}
uint8_t XULComboboxAccessible::ActionCount() const {
// Just one action (click).
return 1;
}
bool XULComboboxAccessible::DoAction(uint8_t aIndex) const {
if (aIndex != XULComboboxAccessible::eAction_Click) return false;
// Programmaticaly toggle the combo box.
nsCOMPtr<nsIDOMXULMenuListElement> menuList = Elm()->AsXULMenuList();
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 = Elm()->AsXULMenuList();
if (!menuList) return;
bool isDroppedDown = false;
menuList->GetOpen(&isDroppedDown);
if (isDroppedDown)
aName.AssignLiteral("close");
else
aName.AssignLiteral("open");
}
////////////////////////////////////////////////////////////////////////////////
// Widgets
bool XULComboboxAccessible::IsActiveWidget() const {
if (mContent->AsElement()->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 {
nsCOMPtr<nsIDOMXULMenuListElement> menuListElm = Elm()->AsXULMenuList();
if (menuListElm) {
bool isOpen = false;
menuListElm->GetOpen(&isOpen);
return isOpen;
}
return false;
}
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