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comparison: accessible/src/html/HTMLListAccessible.cpp
accessible/src/html/HTMLListAccessible.cpp
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* vim: set ts=2 et sw=2 tw=80: */ | |
| 3 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this file, | |
| 5 * You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #include "HTMLListAccessible.h" | |
| 8 | |
| 9 #include "DocAccessible.h" | |
| 10 #include "nsAccUtils.h" | |
| 11 #include "Role.h" | |
| 12 #include "States.h" | |
| 13 | |
| 14 #include "nsBlockFrame.h" | |
| 15 #include "nsBulletFrame.h" | |
| 16 | |
| 17 using namespace mozilla; | |
| 18 using namespace mozilla::a11y; | |
| 19 | |
| 20 //////////////////////////////////////////////////////////////////////////////// | |
| 21 // HTMLListAccessible | |
| 22 //////////////////////////////////////////////////////////////////////////////// | |
| 23 | |
| 24 NS_IMPL_ISUPPORTS_INHERITED0(HTMLListAccessible, HyperTextAccessible) | |
| 25 | |
| 26 role | |
| 27 HTMLListAccessible::NativeRole() | |
| 28 { | |
| 29 if (mContent->Tag() == nsGkAtoms::dl) | |
| 30 return roles::DEFINITION_LIST; | |
| 31 | |
| 32 return roles::LIST; | |
| 33 } | |
| 34 | |
| 35 uint64_t | |
| 36 HTMLListAccessible::NativeState() | |
| 37 { | |
| 38 return HyperTextAccessibleWrap::NativeState() | states::READONLY; | |
| 39 } | |
| 40 | |
| 41 | |
| 42 //////////////////////////////////////////////////////////////////////////////// | |
| 43 // HTMLLIAccessible | |
| 44 //////////////////////////////////////////////////////////////////////////////// | |
| 45 | |
| 46 HTMLLIAccessible:: | |
| 47 HTMLLIAccessible(nsIContent* aContent, DocAccessible* aDoc) : | |
| 48 HyperTextAccessibleWrap(aContent, aDoc), mBullet(nullptr) | |
| 49 { | |
| 50 mType = eHTMLLiType; | |
| 51 | |
| 52 nsBlockFrame* blockFrame = do_QueryFrame(GetFrame()); | |
| 53 if (blockFrame && blockFrame->HasBullet()) { | |
| 54 mBullet = new HTMLListBulletAccessible(mContent, mDoc); | |
| 55 Document()->BindToDocument(mBullet, nullptr); | |
| 56 } | |
| 57 } | |
| 58 | |
| 59 NS_IMPL_ISUPPORTS_INHERITED0(HTMLLIAccessible, HyperTextAccessible) | |
| 60 | |
| 61 void | |
| 62 HTMLLIAccessible::Shutdown() | |
| 63 { | |
| 64 mBullet = nullptr; | |
| 65 | |
| 66 HyperTextAccessibleWrap::Shutdown(); | |
| 67 } | |
| 68 | |
| 69 role | |
| 70 HTMLLIAccessible::NativeRole() | |
| 71 { | |
| 72 if (mContent->Tag() == nsGkAtoms::dt) | |
| 73 return roles::TERM; | |
| 74 | |
| 75 return roles::LISTITEM; | |
| 76 } | |
| 77 | |
| 78 uint64_t | |
| 79 HTMLLIAccessible::NativeState() | |
| 80 { | |
| 81 return HyperTextAccessibleWrap::NativeState() | states::READONLY; | |
| 82 } | |
| 83 | |
| 84 NS_IMETHODIMP | |
| 85 HTMLLIAccessible::GetBounds(int32_t* aX, int32_t* aY, | |
| 86 int32_t* aWidth, int32_t* aHeight) | |
| 87 { | |
| 88 nsresult rv = AccessibleWrap::GetBounds(aX, aY, aWidth, aHeight); | |
| 89 if (NS_FAILED(rv) || !mBullet || mBullet->IsInside()) | |
| 90 return rv; | |
| 91 | |
| 92 int32_t bulletX = 0, bulletY = 0, bulletWidth = 0, bulletHeight = 0; | |
| 93 rv = mBullet->GetBounds(&bulletX, &bulletY, &bulletWidth, &bulletHeight); | |
| 94 NS_ENSURE_SUCCESS(rv, rv); | |
| 95 | |
| 96 *aWidth += *aX - bulletX; | |
| 97 *aX = bulletX; // Move x coordinate of list item over to cover bullet as well | |
| 98 return NS_OK; | |
| 99 } | |
| 100 | |
| 101 //////////////////////////////////////////////////////////////////////////////// | |
| 102 // HTMLLIAccessible: public | |
| 103 | |
| 104 void | |
| 105 HTMLLIAccessible::UpdateBullet(bool aHasBullet) | |
| 106 { | |
| 107 if (aHasBullet == !!mBullet) { | |
| 108 NS_NOTREACHED("Bullet and accessible are in sync already!"); | |
| 109 return; | |
| 110 } | |
| 111 | |
| 112 DocAccessible* document = Document(); | |
| 113 if (aHasBullet) { | |
| 114 mBullet = new HTMLListBulletAccessible(mContent, mDoc); | |
| 115 document->BindToDocument(mBullet, nullptr); | |
| 116 InsertChildAt(0, mBullet); | |
| 117 } else { | |
| 118 RemoveChild(mBullet); | |
| 119 document->UnbindFromDocument(mBullet); | |
| 120 mBullet = nullptr; | |
| 121 } | |
| 122 | |
| 123 // XXXtodo: fire show/hide and reorder events. That's hard to make it | |
| 124 // right now because coalescence happens by DOM node. | |
| 125 } | |
| 126 | |
| 127 //////////////////////////////////////////////////////////////////////////////// | |
| 128 // HTMLLIAccessible: Accessible protected | |
| 129 | |
| 130 void | |
| 131 HTMLLIAccessible::CacheChildren() | |
| 132 { | |
| 133 if (mBullet) | |
| 134 AppendChild(mBullet); | |
| 135 | |
| 136 // Cache children from subtree. | |
| 137 AccessibleWrap::CacheChildren(); | |
| 138 } | |
| 139 | |
| 140 //////////////////////////////////////////////////////////////////////////////// | |
| 141 // HTMLListBulletAccessible | |
| 142 //////////////////////////////////////////////////////////////////////////////// | |
| 143 HTMLListBulletAccessible:: | |
| 144 HTMLListBulletAccessible(nsIContent* aContent, DocAccessible* aDoc) : | |
| 145 LeafAccessible(aContent, aDoc) | |
| 146 { | |
| 147 mStateFlags |= eSharedNode; | |
| 148 } | |
| 149 | |
| 150 //////////////////////////////////////////////////////////////////////////////// | |
| 151 // HTMLListBulletAccessible: Accessible | |
| 152 | |
| 153 nsIFrame* | |
| 154 HTMLListBulletAccessible::GetFrame() const | |
| 155 { | |
| 156 nsBlockFrame* blockFrame = do_QueryFrame(mContent->GetPrimaryFrame()); | |
| 157 return blockFrame ? blockFrame->GetBullet() : nullptr; | |
| 158 } | |
| 159 | |
| 160 ENameValueFlag | |
| 161 HTMLListBulletAccessible::Name(nsString &aName) | |
| 162 { | |
| 163 aName.Truncate(); | |
| 164 | |
| 165 // Native anonymous content, ARIA can't be used. Get list bullet text. | |
| 166 nsBlockFrame* blockFrame = do_QueryFrame(mContent->GetPrimaryFrame()); | |
| 167 if (blockFrame) { | |
| 168 blockFrame->GetBulletText(aName); | |
| 169 | |
| 170 // Append space otherwise bullets are jammed up against list text. | |
| 171 aName.Append(' '); | |
| 172 } | |
| 173 | |
| 174 return eNameOK; | |
| 175 } | |
| 176 | |
| 177 role | |
| 178 HTMLListBulletAccessible::NativeRole() | |
| 179 { | |
| 180 return roles::STATICTEXT; | |
| 181 } | |
| 182 | |
| 183 uint64_t | |
| 184 HTMLListBulletAccessible::NativeState() | |
| 185 { | |
| 186 return LeafAccessible::NativeState() | states::READONLY; | |
| 187 } | |
| 188 | |
| 189 void | |
| 190 HTMLListBulletAccessible::AppendTextTo(nsAString& aText, uint32_t aStartOffset, | |
| 191 uint32_t aLength) | |
| 192 { | |
| 193 nsAutoString bulletText; | |
| 194 nsBlockFrame* blockFrame = do_QueryFrame(mContent->GetPrimaryFrame()); | |
| 195 if (blockFrame) | |
| 196 blockFrame->GetBulletText(bulletText); | |
| 197 | |
| 198 aText.Append(Substring(bulletText, aStartOffset, aLength)); | |
| 199 } | |
| 200 | |
| 201 //////////////////////////////////////////////////////////////////////////////// | |
| 202 // HTMLListBulletAccessible: public | |
| 203 | |
| 204 bool | |
| 205 HTMLListBulletAccessible::IsInside() const | |
| 206 { | |
| 207 nsBlockFrame* blockFrame = do_QueryFrame(mContent->GetPrimaryFrame()); | |
| 208 return blockFrame ? blockFrame->HasInsideBullet() : false; | |
| 209 } |
