michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "XULSliderAccessible.h"
michael@0: 
michael@0: #include "nsAccessibilityService.h"
michael@0: #include "Role.h"
michael@0: #include "States.h"
michael@0: 
michael@0: #include "nsIFrame.h"
michael@0: #include "mozilla/dom/Element.h"
michael@0: #include "mozilla/FloatingPoint.h"
michael@0: 
michael@0: using namespace mozilla::a11y;
michael@0: 
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: // XULSliderAccessible
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: XULSliderAccessible::
michael@0:   XULSliderAccessible(nsIContent* aContent, DocAccessible* aDoc) :
michael@0:   AccessibleWrap(aContent, aDoc)
michael@0: {
michael@0:   mStateFlags |= eHasNumericValue;
michael@0: }
michael@0: 
michael@0: // Accessible
michael@0: 
michael@0: role
michael@0: XULSliderAccessible::NativeRole()
michael@0: {
michael@0:   return roles::SLIDER;
michael@0: }
michael@0: 
michael@0: uint64_t
michael@0: XULSliderAccessible::NativeInteractiveState() const
michael@0:  {
michael@0:   if (NativelyUnavailable())
michael@0:     return states::UNAVAILABLE;
michael@0: 
michael@0:   nsIContent* sliderElm = GetSliderElement();
michael@0:   if (sliderElm) {
michael@0:     nsIFrame* frame = sliderElm->GetPrimaryFrame();
michael@0:     if (frame && frame->IsFocusable())
michael@0:       return states::FOCUSABLE;
michael@0:   }
michael@0: 
michael@0:   return 0;
michael@0: }
michael@0: 
michael@0: bool
michael@0: XULSliderAccessible::NativelyUnavailable() const
michael@0: {
michael@0:   return mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::disabled,
michael@0:                                nsGkAtoms::_true, eCaseMatters);
michael@0: }
michael@0: 
michael@0: // nsIAccessible
michael@0: 
michael@0: void
michael@0: XULSliderAccessible::Value(nsString& aValue)
michael@0: {
michael@0:   GetSliderAttr(nsGkAtoms::curpos, aValue);
michael@0: }
michael@0: 
michael@0: uint8_t
michael@0: XULSliderAccessible::ActionCount()
michael@0: {
michael@0:   return 1;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: XULSliderAccessible::GetActionName(uint8_t aIndex, nsAString& aName)
michael@0: {
michael@0:   aName.Truncate();
michael@0: 
michael@0:   NS_ENSURE_ARG(aIndex == 0);
michael@0: 
michael@0:   aName.AssignLiteral("activate");
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: XULSliderAccessible::DoAction(uint8_t aIndex)
michael@0: {
michael@0:   NS_ENSURE_ARG(aIndex == 0);
michael@0: 
michael@0:   nsIContent* sliderElm = GetSliderElement();
michael@0:   if (sliderElm)
michael@0:     DoCommand(sliderElm);
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: double
michael@0: XULSliderAccessible::MaxValue() const
michael@0: {
michael@0:   double value = AccessibleWrap::MaxValue();
michael@0:   return IsNaN(value) ? GetSliderAttr(nsGkAtoms::maxpos) : value;
michael@0: }
michael@0: 
michael@0: double
michael@0: XULSliderAccessible::MinValue() const
michael@0: {
michael@0:   double value = AccessibleWrap::MinValue();
michael@0:   return IsNaN(value) ? GetSliderAttr(nsGkAtoms::minpos) : value;
michael@0: }
michael@0: 
michael@0: double
michael@0: XULSliderAccessible::Step() const
michael@0: {
michael@0:   double value = AccessibleWrap::Step();
michael@0:   return IsNaN(value) ? GetSliderAttr(nsGkAtoms::increment) : value;
michael@0: }
michael@0: 
michael@0: double
michael@0: XULSliderAccessible::CurValue() const
michael@0: {
michael@0:   double value = AccessibleWrap::CurValue();
michael@0:   return IsNaN(value) ? GetSliderAttr(nsGkAtoms::curpos) : value;
michael@0: }
michael@0: 
michael@0: bool
michael@0: XULSliderAccessible::SetCurValue(double aValue)
michael@0: {
michael@0:   if (AccessibleWrap::SetCurValue(aValue))
michael@0:     return true;
michael@0: 
michael@0:   return SetSliderAttr(nsGkAtoms::curpos, aValue);
michael@0: }
michael@0: 
michael@0: bool
michael@0: XULSliderAccessible::CanHaveAnonChildren()
michael@0: {
michael@0:   // Do not allow anonymous xul:slider be accessible.
michael@0:   return false;
michael@0: }
michael@0: 
michael@0: // Utils
michael@0: 
michael@0: nsIContent*
michael@0: XULSliderAccessible::GetSliderElement() const
michael@0: {
michael@0:   if (!mSliderNode) {
michael@0:     // XXX: we depend on anonymous content.
michael@0:     mSliderNode = mContent->OwnerDoc()->
michael@0:       GetAnonymousElementByAttribute(mContent, nsGkAtoms::anonid,
michael@0:                                      NS_LITERAL_STRING("slider"));
michael@0:   }
michael@0: 
michael@0:   return mSliderNode;
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: XULSliderAccessible::GetSliderAttr(nsIAtom* aName, nsAString& aValue) const
michael@0: {
michael@0:   aValue.Truncate();
michael@0: 
michael@0:   if (IsDefunct())
michael@0:     return NS_ERROR_FAILURE;
michael@0: 
michael@0:   nsIContent* sliderElm = GetSliderElement();
michael@0:   if (sliderElm)
michael@0:     sliderElm->GetAttr(kNameSpaceID_None, aName, aValue);
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: XULSliderAccessible::SetSliderAttr(nsIAtom* aName, const nsAString& aValue)
michael@0: {
michael@0:   if (IsDefunct())
michael@0:     return NS_ERROR_FAILURE;
michael@0: 
michael@0:   nsIContent* sliderElm = GetSliderElement();
michael@0:   if (sliderElm)
michael@0:     sliderElm->SetAttr(kNameSpaceID_None, aName, aValue, true);
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: double
michael@0: XULSliderAccessible::GetSliderAttr(nsIAtom* aName) const
michael@0: {
michael@0:   nsAutoString attrValue;
michael@0:   nsresult rv = GetSliderAttr(aName, attrValue);
michael@0:   if (NS_FAILED(rv))
michael@0:     return UnspecifiedNaN<double>();
michael@0: 
michael@0:   nsresult error = NS_OK;
michael@0:   double value = attrValue.ToDouble(&error);
michael@0:   return NS_FAILED(error) ? UnspecifiedNaN<double>() : value;
michael@0: }
michael@0: 
michael@0: bool
michael@0: XULSliderAccessible::SetSliderAttr(nsIAtom* aName, double aValue)
michael@0: {
michael@0:   nsAutoString value;
michael@0:   value.AppendFloat(aValue);
michael@0: 
michael@0:   return NS_SUCCEEDED(SetSliderAttr(aName, value));
michael@0: }
michael@0: 
michael@0: 
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: // XULThumbAccessible
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: XULThumbAccessible::
michael@0:   XULThumbAccessible(nsIContent* aContent, DocAccessible* aDoc) :
michael@0:   AccessibleWrap(aContent, aDoc)
michael@0: {
michael@0: }
michael@0: 
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: // XULThumbAccessible: Accessible
michael@0: 
michael@0: role
michael@0: XULThumbAccessible::NativeRole()
michael@0: {
michael@0:   return roles::INDICATOR;
michael@0: }
michael@0: