gecko-dev/accessible/html/HTMLElementAccessibles.cpp

119 lines
2.9 KiB
C++

/* -*- Mode: C++; tab-width: 2; 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 "HTMLElementAccessibles.h"
#include "DocAccessible.h"
#include "nsAccUtils.h"
#include "nsIPersistentProperties2.h"
#include "nsTextEquivUtils.h"
#include "Relation.h"
#include "Role.h"
#include "States.h"
#include "mozilla/dom/HTMLLabelElement.h"
using namespace mozilla::a11y;
////////////////////////////////////////////////////////////////////////////////
// HTMLHRAccessible
////////////////////////////////////////////////////////////////////////////////
role
HTMLHRAccessible::NativeRole()
{
return roles::SEPARATOR;
}
////////////////////////////////////////////////////////////////////////////////
// HTMLBRAccessible
////////////////////////////////////////////////////////////////////////////////
role
HTMLBRAccessible::NativeRole()
{
return roles::WHITESPACE;
}
uint64_t
HTMLBRAccessible::NativeState()
{
return states::READONLY;
}
ENameValueFlag
HTMLBRAccessible::NativeName(nsString& aName)
{
aName = static_cast<char16_t>('\n'); // Newline char
return eNameOK;
}
////////////////////////////////////////////////////////////////////////////////
// HTMLLabelAccessible
////////////////////////////////////////////////////////////////////////////////
NS_IMPL_ISUPPORTS_INHERITED0(HTMLLabelAccessible, HyperTextAccessible)
ENameValueFlag
HTMLLabelAccessible::NativeName(nsString& aName)
{
nsTextEquivUtils::GetNameFromSubtree(this, aName);
return aName.IsEmpty() ? eNameOK : eNameFromSubtree;
}
Relation
HTMLLabelAccessible::RelationByType(RelationType aType)
{
Relation rel = AccessibleWrap::RelationByType(aType);
if (aType == RelationType::LABEL_FOR) {
dom::HTMLLabelElement* label = dom::HTMLLabelElement::FromContent(mContent);
rel.AppendTarget(mDoc, label->GetControl());
}
return rel;
}
uint8_t
HTMLLabelAccessible::ActionCount()
{
return nsCoreUtils::IsLabelWithControl(mContent) ? 1 : 0;
}
void
HTMLLabelAccessible::ActionNameAt(uint8_t aIndex, nsAString& aName)
{
if (aIndex == 0) {
if (nsCoreUtils::IsLabelWithControl(mContent))
aName.AssignLiteral("click");
}
}
bool
HTMLLabelAccessible::DoAction(uint8_t aIndex)
{
if (aIndex != 0)
return false;
DoCommand();
return true;
}
////////////////////////////////////////////////////////////////////////////////
// nsHTMLOuputAccessible
////////////////////////////////////////////////////////////////////////////////
NS_IMPL_ISUPPORTS_INHERITED0(HTMLOutputAccessible, HyperTextAccessible)
Relation
HTMLOutputAccessible::RelationByType(RelationType aType)
{
Relation rel = AccessibleWrap::RelationByType(aType);
if (aType == RelationType::CONTROLLED_BY)
rel.AppendIter(new IDRefsIterator(mDoc, mContent, nsGkAtoms::_for));
return rel;
}