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comparison: accessible/src/generic/FormControlAccessible.cpp
accessible/src/generic/FormControlAccessible.cpp
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 // NOTE: alphabetically ordered | |
| 7 | |
| 8 #include "FormControlAccessible.h" | |
| 9 #include "Role.h" | |
| 10 | |
| 11 #include "mozilla/FloatingPoint.h" | |
| 12 #include "nsIDOMHTMLFormElement.h" | |
| 13 #include "nsIDOMXULElement.h" | |
| 14 #include "nsIDOMXULControlElement.h" | |
| 15 | |
| 16 using namespace mozilla::a11y; | |
| 17 | |
| 18 //////////////////////////////////////////////////////////////////////////////// | |
| 19 // ProgressMeterAccessible | |
| 20 //////////////////////////////////////////////////////////////////////////////// | |
| 21 | |
| 22 template class mozilla::a11y::ProgressMeterAccessible<1>; | |
| 23 template class mozilla::a11y::ProgressMeterAccessible<100>; | |
| 24 | |
| 25 //////////////////////////////////////////////////////////////////////////////// | |
| 26 // nsISupports | |
| 27 | |
| 28 template<int Max> | |
| 29 NS_IMPL_ADDREF_INHERITED(ProgressMeterAccessible<Max>, LeafAccessible) | |
| 30 | |
| 31 template<int Max> | |
| 32 NS_IMPL_RELEASE_INHERITED(ProgressMeterAccessible<Max>, LeafAccessible) | |
| 33 | |
| 34 template<int Max> | |
| 35 NS_IMPL_QUERY_INTERFACE_INHERITED(ProgressMeterAccessible<Max>, | |
| 36 LeafAccessible, | |
| 37 nsIAccessibleValue) | |
| 38 | |
| 39 //////////////////////////////////////////////////////////////////////////////// | |
| 40 // Accessible | |
| 41 | |
| 42 template<int Max> | |
| 43 role | |
| 44 ProgressMeterAccessible<Max>::NativeRole() | |
| 45 { | |
| 46 return roles::PROGRESSBAR; | |
| 47 } | |
| 48 | |
| 49 template<int Max> | |
| 50 uint64_t | |
| 51 ProgressMeterAccessible<Max>::NativeState() | |
| 52 { | |
| 53 uint64_t state = LeafAccessible::NativeState(); | |
| 54 | |
| 55 // An undetermined progressbar (i.e. without a value) has a mixed state. | |
| 56 nsAutoString attrValue; | |
| 57 mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::value, attrValue); | |
| 58 | |
| 59 if (attrValue.IsEmpty()) | |
| 60 state |= states::MIXED; | |
| 61 | |
| 62 return state; | |
| 63 } | |
| 64 | |
| 65 //////////////////////////////////////////////////////////////////////////////// | |
| 66 // ProgressMeterAccessible<Max>: Widgets | |
| 67 | |
| 68 template<int Max> | |
| 69 bool | |
| 70 ProgressMeterAccessible<Max>::IsWidget() const | |
| 71 { | |
| 72 return true; | |
| 73 } | |
| 74 | |
| 75 //////////////////////////////////////////////////////////////////////////////// | |
| 76 // nsIAccessibleValue | |
| 77 | |
| 78 template<int Max> | |
| 79 void | |
| 80 ProgressMeterAccessible<Max>::Value(nsString& aValue) | |
| 81 { | |
| 82 LeafAccessible::Value(aValue); | |
| 83 if (!aValue.IsEmpty()) | |
| 84 return; | |
| 85 | |
| 86 double maxValue = MaxValue(); | |
| 87 if (IsNaN(maxValue) || maxValue == 0) | |
| 88 return; | |
| 89 | |
| 90 double curValue = CurValue(); | |
| 91 if (IsNaN(curValue)) | |
| 92 return; | |
| 93 | |
| 94 // Treat the current value bigger than maximum as 100%. | |
| 95 double percentValue = (curValue < maxValue) ? | |
| 96 (curValue / maxValue) * 100 : 100; | |
| 97 | |
| 98 aValue.AppendFloat(percentValue); | |
| 99 aValue.AppendLiteral("%"); | |
| 100 } | |
| 101 | |
| 102 template<int Max> | |
| 103 double | |
| 104 ProgressMeterAccessible<Max>::MaxValue() const | |
| 105 { | |
| 106 double value = LeafAccessible::MaxValue(); | |
| 107 if (!IsNaN(value)) | |
| 108 return value; | |
| 109 | |
| 110 nsAutoString strValue; | |
| 111 if (mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::max, strValue)) { | |
| 112 nsresult result = NS_OK; | |
| 113 value = strValue.ToDouble(&result); | |
| 114 if (NS_SUCCEEDED(result)) | |
| 115 return value; | |
| 116 } | |
| 117 | |
| 118 return Max; | |
| 119 } | |
| 120 | |
| 121 template<int Max> | |
| 122 double | |
| 123 ProgressMeterAccessible<Max>::MinValue() const | |
| 124 { | |
| 125 double value = LeafAccessible::MinValue(); | |
| 126 return IsNaN(value) ? 0 : value; | |
| 127 } | |
| 128 | |
| 129 template<int Max> | |
| 130 double | |
| 131 ProgressMeterAccessible<Max>::Step() const | |
| 132 { | |
| 133 double value = LeafAccessible::Step(); | |
| 134 return IsNaN(value) ? 0 : value; | |
| 135 } | |
| 136 | |
| 137 template<int Max> | |
| 138 double | |
| 139 ProgressMeterAccessible<Max>::CurValue() const | |
| 140 { | |
| 141 double value = LeafAccessible::CurValue(); | |
| 142 if (!IsNaN(value)) | |
| 143 return value; | |
| 144 | |
| 145 nsAutoString attrValue; | |
| 146 if (!mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::value, attrValue)) | |
| 147 return UnspecifiedNaN<double>(); | |
| 148 | |
| 149 nsresult error = NS_OK; | |
| 150 value = attrValue.ToDouble(&error); | |
| 151 return NS_FAILED(error) ? UnspecifiedNaN<double>() : value; | |
| 152 } | |
| 153 | |
| 154 template<int Max> | |
| 155 bool | |
| 156 ProgressMeterAccessible<Max>::SetCurValue(double aValue) | |
| 157 { | |
| 158 return false; // progress meters are readonly. | |
| 159 } | |
| 160 | |
| 161 //////////////////////////////////////////////////////////////////////////////// | |
| 162 // RadioButtonAccessible | |
| 163 //////////////////////////////////////////////////////////////////////////////// | |
| 164 | |
| 165 RadioButtonAccessible:: | |
| 166 RadioButtonAccessible(nsIContent* aContent, DocAccessible* aDoc) : | |
| 167 LeafAccessible(aContent, aDoc) | |
| 168 { | |
| 169 } | |
| 170 | |
| 171 uint8_t | |
| 172 RadioButtonAccessible::ActionCount() | |
| 173 { | |
| 174 return 1; | |
| 175 } | |
| 176 | |
| 177 NS_IMETHODIMP | |
| 178 RadioButtonAccessible::GetActionName(uint8_t aIndex, nsAString& aName) | |
| 179 { | |
| 180 if (aIndex == eAction_Click) { | |
| 181 aName.AssignLiteral("select"); | |
| 182 return NS_OK; | |
| 183 } | |
| 184 return NS_ERROR_INVALID_ARG; | |
| 185 } | |
| 186 | |
| 187 NS_IMETHODIMP | |
| 188 RadioButtonAccessible::DoAction(uint8_t aIndex) | |
| 189 { | |
| 190 if (aIndex != eAction_Click) | |
| 191 return NS_ERROR_INVALID_ARG; | |
| 192 | |
| 193 DoCommand(); | |
| 194 return NS_OK; | |
| 195 } | |
| 196 | |
| 197 role | |
| 198 RadioButtonAccessible::NativeRole() | |
| 199 { | |
| 200 return roles::RADIOBUTTON; | |
| 201 } | |
| 202 | |
| 203 //////////////////////////////////////////////////////////////////////////////// | |
| 204 // RadioButtonAccessible: Widgets | |
| 205 | |
| 206 bool | |
| 207 RadioButtonAccessible::IsWidget() const | |
| 208 { | |
| 209 return true; | |
| 210 } |
