1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/accessible/src/xul/XULSliderAccessible.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,225 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#include "XULSliderAccessible.h"
1.10 +
1.11 +#include "nsAccessibilityService.h"
1.12 +#include "Role.h"
1.13 +#include "States.h"
1.14 +
1.15 +#include "nsIFrame.h"
1.16 +#include "mozilla/dom/Element.h"
1.17 +#include "mozilla/FloatingPoint.h"
1.18 +
1.19 +using namespace mozilla::a11y;
1.20 +
1.21 +////////////////////////////////////////////////////////////////////////////////
1.22 +// XULSliderAccessible
1.23 +////////////////////////////////////////////////////////////////////////////////
1.24 +
1.25 +XULSliderAccessible::
1.26 + XULSliderAccessible(nsIContent* aContent, DocAccessible* aDoc) :
1.27 + AccessibleWrap(aContent, aDoc)
1.28 +{
1.29 + mStateFlags |= eHasNumericValue;
1.30 +}
1.31 +
1.32 +// Accessible
1.33 +
1.34 +role
1.35 +XULSliderAccessible::NativeRole()
1.36 +{
1.37 + return roles::SLIDER;
1.38 +}
1.39 +
1.40 +uint64_t
1.41 +XULSliderAccessible::NativeInteractiveState() const
1.42 + {
1.43 + if (NativelyUnavailable())
1.44 + return states::UNAVAILABLE;
1.45 +
1.46 + nsIContent* sliderElm = GetSliderElement();
1.47 + if (sliderElm) {
1.48 + nsIFrame* frame = sliderElm->GetPrimaryFrame();
1.49 + if (frame && frame->IsFocusable())
1.50 + return states::FOCUSABLE;
1.51 + }
1.52 +
1.53 + return 0;
1.54 +}
1.55 +
1.56 +bool
1.57 +XULSliderAccessible::NativelyUnavailable() const
1.58 +{
1.59 + return mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::disabled,
1.60 + nsGkAtoms::_true, eCaseMatters);
1.61 +}
1.62 +
1.63 +// nsIAccessible
1.64 +
1.65 +void
1.66 +XULSliderAccessible::Value(nsString& aValue)
1.67 +{
1.68 + GetSliderAttr(nsGkAtoms::curpos, aValue);
1.69 +}
1.70 +
1.71 +uint8_t
1.72 +XULSliderAccessible::ActionCount()
1.73 +{
1.74 + return 1;
1.75 +}
1.76 +
1.77 +NS_IMETHODIMP
1.78 +XULSliderAccessible::GetActionName(uint8_t aIndex, nsAString& aName)
1.79 +{
1.80 + aName.Truncate();
1.81 +
1.82 + NS_ENSURE_ARG(aIndex == 0);
1.83 +
1.84 + aName.AssignLiteral("activate");
1.85 + return NS_OK;
1.86 +}
1.87 +
1.88 +NS_IMETHODIMP
1.89 +XULSliderAccessible::DoAction(uint8_t aIndex)
1.90 +{
1.91 + NS_ENSURE_ARG(aIndex == 0);
1.92 +
1.93 + nsIContent* sliderElm = GetSliderElement();
1.94 + if (sliderElm)
1.95 + DoCommand(sliderElm);
1.96 +
1.97 + return NS_OK;
1.98 +}
1.99 +
1.100 +double
1.101 +XULSliderAccessible::MaxValue() const
1.102 +{
1.103 + double value = AccessibleWrap::MaxValue();
1.104 + return IsNaN(value) ? GetSliderAttr(nsGkAtoms::maxpos) : value;
1.105 +}
1.106 +
1.107 +double
1.108 +XULSliderAccessible::MinValue() const
1.109 +{
1.110 + double value = AccessibleWrap::MinValue();
1.111 + return IsNaN(value) ? GetSliderAttr(nsGkAtoms::minpos) : value;
1.112 +}
1.113 +
1.114 +double
1.115 +XULSliderAccessible::Step() const
1.116 +{
1.117 + double value = AccessibleWrap::Step();
1.118 + return IsNaN(value) ? GetSliderAttr(nsGkAtoms::increment) : value;
1.119 +}
1.120 +
1.121 +double
1.122 +XULSliderAccessible::CurValue() const
1.123 +{
1.124 + double value = AccessibleWrap::CurValue();
1.125 + return IsNaN(value) ? GetSliderAttr(nsGkAtoms::curpos) : value;
1.126 +}
1.127 +
1.128 +bool
1.129 +XULSliderAccessible::SetCurValue(double aValue)
1.130 +{
1.131 + if (AccessibleWrap::SetCurValue(aValue))
1.132 + return true;
1.133 +
1.134 + return SetSliderAttr(nsGkAtoms::curpos, aValue);
1.135 +}
1.136 +
1.137 +bool
1.138 +XULSliderAccessible::CanHaveAnonChildren()
1.139 +{
1.140 + // Do not allow anonymous xul:slider be accessible.
1.141 + return false;
1.142 +}
1.143 +
1.144 +// Utils
1.145 +
1.146 +nsIContent*
1.147 +XULSliderAccessible::GetSliderElement() const
1.148 +{
1.149 + if (!mSliderNode) {
1.150 + // XXX: we depend on anonymous content.
1.151 + mSliderNode = mContent->OwnerDoc()->
1.152 + GetAnonymousElementByAttribute(mContent, nsGkAtoms::anonid,
1.153 + NS_LITERAL_STRING("slider"));
1.154 + }
1.155 +
1.156 + return mSliderNode;
1.157 +}
1.158 +
1.159 +nsresult
1.160 +XULSliderAccessible::GetSliderAttr(nsIAtom* aName, nsAString& aValue) const
1.161 +{
1.162 + aValue.Truncate();
1.163 +
1.164 + if (IsDefunct())
1.165 + return NS_ERROR_FAILURE;
1.166 +
1.167 + nsIContent* sliderElm = GetSliderElement();
1.168 + if (sliderElm)
1.169 + sliderElm->GetAttr(kNameSpaceID_None, aName, aValue);
1.170 +
1.171 + return NS_OK;
1.172 +}
1.173 +
1.174 +nsresult
1.175 +XULSliderAccessible::SetSliderAttr(nsIAtom* aName, const nsAString& aValue)
1.176 +{
1.177 + if (IsDefunct())
1.178 + return NS_ERROR_FAILURE;
1.179 +
1.180 + nsIContent* sliderElm = GetSliderElement();
1.181 + if (sliderElm)
1.182 + sliderElm->SetAttr(kNameSpaceID_None, aName, aValue, true);
1.183 +
1.184 + return NS_OK;
1.185 +}
1.186 +
1.187 +double
1.188 +XULSliderAccessible::GetSliderAttr(nsIAtom* aName) const
1.189 +{
1.190 + nsAutoString attrValue;
1.191 + nsresult rv = GetSliderAttr(aName, attrValue);
1.192 + if (NS_FAILED(rv))
1.193 + return UnspecifiedNaN<double>();
1.194 +
1.195 + nsresult error = NS_OK;
1.196 + double value = attrValue.ToDouble(&error);
1.197 + return NS_FAILED(error) ? UnspecifiedNaN<double>() : value;
1.198 +}
1.199 +
1.200 +bool
1.201 +XULSliderAccessible::SetSliderAttr(nsIAtom* aName, double aValue)
1.202 +{
1.203 + nsAutoString value;
1.204 + value.AppendFloat(aValue);
1.205 +
1.206 + return NS_SUCCEEDED(SetSliderAttr(aName, value));
1.207 +}
1.208 +
1.209 +
1.210 +////////////////////////////////////////////////////////////////////////////////
1.211 +// XULThumbAccessible
1.212 +////////////////////////////////////////////////////////////////////////////////
1.213 +
1.214 +XULThumbAccessible::
1.215 + XULThumbAccessible(nsIContent* aContent, DocAccessible* aDoc) :
1.216 + AccessibleWrap(aContent, aDoc)
1.217 +{
1.218 +}
1.219 +
1.220 +////////////////////////////////////////////////////////////////////////////////
1.221 +// XULThumbAccessible: Accessible
1.222 +
1.223 +role
1.224 +XULThumbAccessible::NativeRole()
1.225 +{
1.226 + return roles::INDICATOR;
1.227 +}
1.228 +
