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/* -*- 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 "XULSliderAccessible.h"
#include "nsAccessibilityService.h"
#include "Role.h"
#include "States.h"
#include "nsIFrame.h"
#include "mozilla/dom/Element.h"
#include "mozilla/FloatingPoint.h"
using namespace mozilla::a11y;
////////////////////////////////////////////////////////////////////////////////
// XULSliderAccessible
////////////////////////////////////////////////////////////////////////////////
XULSliderAccessible::
XULSliderAccessible(nsIContent* aContent, DocAccessible* aDoc) :
AccessibleWrap(aContent, aDoc)
{
mStateFlags |= eHasNumericValue | eNoXBLKids;
}
// Accessible
role
XULSliderAccessible::NativeRole()
{
return roles::SLIDER;
}
uint64_t
XULSliderAccessible::NativeInteractiveState() const
{
if (NativelyUnavailable())
return states::UNAVAILABLE;
nsIContent* sliderElm = GetSliderElement();
if (sliderElm) {
nsIFrame* frame = sliderElm->GetPrimaryFrame();
if (frame && frame->IsFocusable())
return states::FOCUSABLE;
}
return 0;
}
bool
XULSliderAccessible::NativelyUnavailable() const
{
return mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::disabled,
nsGkAtoms::_true, eCaseMatters);
}
void
XULSliderAccessible::Value(nsString& aValue)
{
GetSliderAttr(nsGkAtoms::curpos, aValue);
}
uint8_t
XULSliderAccessible::ActionCount()
{
return 1;
}
void
XULSliderAccessible::ActionNameAt(uint8_t aIndex, nsAString& aName)
{
aName.Truncate();
if (aIndex == 0)
aName.AssignLiteral("activate");
}
bool
XULSliderAccessible::DoAction(uint8_t aIndex)
{
if (aIndex != 0)
return false;
nsIContent* sliderElm = GetSliderElement();
if (sliderElm)
DoCommand(sliderElm);
return true;
}
double
XULSliderAccessible::MaxValue() const
{
double value = AccessibleWrap::MaxValue();
return IsNaN(value) ? GetSliderAttr(nsGkAtoms::maxpos) : value;
}
double
XULSliderAccessible::MinValue() const
{
double value = AccessibleWrap::MinValue();
return IsNaN(value) ? GetSliderAttr(nsGkAtoms::minpos) : value;
}
double
XULSliderAccessible::Step() const
{
double value = AccessibleWrap::Step();
return IsNaN(value) ? GetSliderAttr(nsGkAtoms::increment) : value;
}
double
XULSliderAccessible::CurValue() const
{
double value = AccessibleWrap::CurValue();
return IsNaN(value) ? GetSliderAttr(nsGkAtoms::curpos) : value;
}
bool
XULSliderAccessible::SetCurValue(double aValue)
{
if (AccessibleWrap::SetCurValue(aValue))
return true;
return SetSliderAttr(nsGkAtoms::curpos, aValue);
}
// Utils
nsIContent*
XULSliderAccessible::GetSliderElement() const
{
if (!mSliderNode) {
// XXX: we depend on anonymous content.
mSliderNode = mContent->OwnerDoc()->
GetAnonymousElementByAttribute(mContent, nsGkAtoms::anonid,
NS_LITERAL_STRING("slider"));
}
return mSliderNode;
}
nsresult
XULSliderAccessible::GetSliderAttr(nsIAtom* aName, nsAString& aValue) const
{
aValue.Truncate();
if (IsDefunct())
return NS_ERROR_FAILURE;
nsIContent* sliderElm = GetSliderElement();
if (sliderElm)
sliderElm->GetAttr(kNameSpaceID_None, aName, aValue);
return NS_OK;
}
nsresult
XULSliderAccessible::SetSliderAttr(nsIAtom* aName, const nsAString& aValue)
{
if (IsDefunct())
return NS_ERROR_FAILURE;
nsIContent* sliderElm = GetSliderElement();
if (sliderElm)
sliderElm->SetAttr(kNameSpaceID_None, aName, aValue, true);
return NS_OK;
}
double
XULSliderAccessible::GetSliderAttr(nsIAtom* aName) const
{
nsAutoString attrValue;
nsresult rv = GetSliderAttr(aName, attrValue);
if (NS_FAILED(rv))
return UnspecifiedNaN<double>();
nsresult error = NS_OK;
double value = attrValue.ToDouble(&error);
return NS_FAILED(error) ? UnspecifiedNaN<double>() : value;
}
bool
XULSliderAccessible::SetSliderAttr(nsIAtom* aName, double aValue)
{
nsAutoString value;
value.AppendFloat(aValue);
return NS_SUCCEEDED(SetSliderAttr(aName, value));
}
////////////////////////////////////////////////////////////////////////////////
// XULThumbAccessible
////////////////////////////////////////////////////////////////////////////////
XULThumbAccessible::
XULThumbAccessible(nsIContent* aContent, DocAccessible* aDoc) :
AccessibleWrap(aContent, aDoc)
{
}
////////////////////////////////////////////////////////////////////////////////
// XULThumbAccessible: Accessible
role
XULThumbAccessible::NativeRole()
{
return roles::INDICATOR;
}
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