From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001 From: "Matt A. Tobin" Date: Fri, 2 Feb 2018 04:16:08 -0500 Subject: Add m-esr52 at 52.6.0 --- accessible/xul/XULElementAccessibles.cpp | 288 +++++++++++++++++++++++++++++++ 1 file changed, 288 insertions(+) create mode 100644 accessible/xul/XULElementAccessibles.cpp (limited to 'accessible/xul/XULElementAccessibles.cpp') diff --git a/accessible/xul/XULElementAccessibles.cpp b/accessible/xul/XULElementAccessibles.cpp new file mode 100644 index 000000000..b50ddb4ed --- /dev/null +++ b/accessible/xul/XULElementAccessibles.cpp @@ -0,0 +1,288 @@ +/* -*- 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 "XULElementAccessibles.h" + +#include "Accessible-inl.h" +#include "BaseAccessibles.h" +#include "DocAccessible-inl.h" +#include "nsAccUtils.h" +#include "nsCoreUtils.h" +#include "nsTextEquivUtils.h" +#include "Relation.h" +#include "Role.h" +#include "States.h" +#include "TextUpdater.h" + +#ifdef A11Y_LOG +#include "Logging.h" +#endif + +#include "nsIDOMXULDescriptionElement.h" +#include "nsNameSpaceManager.h" +#include "nsNetUtil.h" +#include "nsString.h" +#include "nsTextBoxFrame.h" + +using namespace mozilla::a11y; + +//////////////////////////////////////////////////////////////////////////////// +// XULLabelAccessible +//////////////////////////////////////////////////////////////////////////////// + +XULLabelAccessible:: + XULLabelAccessible(nsIContent* aContent, DocAccessible* aDoc) : + HyperTextAccessibleWrap(aContent, aDoc) +{ + mType = eXULLabelType; + + // If @value attribute is given then it's rendered instead text content. In + // this case we need to create a text leaf accessible to make @value attribute + // accessible. + // XXX: text interface doesn't let you get the text by words. + nsTextBoxFrame* textBoxFrame = do_QueryFrame(mContent->GetPrimaryFrame()); + if (textBoxFrame) { + mValueTextLeaf = new XULLabelTextLeafAccessible(mContent, mDoc); + mDoc->BindToDocument(mValueTextLeaf, nullptr); + + nsAutoString text; + textBoxFrame->GetCroppedTitle(text); + mValueTextLeaf->SetText(text); + AppendChild(mValueTextLeaf); + } +} + +void +XULLabelAccessible::Shutdown() +{ + mValueTextLeaf = nullptr; + HyperTextAccessibleWrap::Shutdown(); +} + +ENameValueFlag +XULLabelAccessible::NativeName(nsString& aName) +{ + // if the value attr doesn't exist, the screen reader must get the accessible text + // from the accessible text interface or from the children + if (mValueTextLeaf) + return mValueTextLeaf->Name(aName); + + return Accessible::NativeName(aName); +} + +role +XULLabelAccessible::NativeRole() +{ + return roles::LABEL; +} + +uint64_t +XULLabelAccessible::NativeState() +{ + // Labels and description have read only state + // They are not focusable or selectable + return HyperTextAccessibleWrap::NativeState() | states::READONLY; +} + +Relation +XULLabelAccessible::RelationByType(RelationType aType) +{ + Relation rel = HyperTextAccessibleWrap::RelationByType(aType); + if (aType == RelationType::LABEL_FOR) { + // Caption is the label for groupbox + nsIContent* parent = mContent->GetFlattenedTreeParent(); + if (parent && parent->IsXULElement(nsGkAtoms::caption)) { + Accessible* parent = Parent(); + if (parent && parent->Role() == roles::GROUPING) + rel.AppendTarget(parent); + } + } + + return rel; +} + +void +XULLabelAccessible::UpdateLabelValue(const nsString& aValue) +{ +#ifdef A11Y_LOG + if (logging::IsEnabled(logging::eText)) { + logging::MsgBegin("TEXT", "text may be changed (xul:label @value update)"); + logging::Node("container", mContent); + logging::MsgEntry("old text '%s'", + NS_ConvertUTF16toUTF8(mValueTextLeaf->Text()).get()); + logging::MsgEntry("new text: '%s'", + NS_ConvertUTF16toUTF8(aValue).get()); + logging::MsgEnd(); + } +#endif + + TextUpdater::Run(mDoc, mValueTextLeaf, aValue); +} + + +//////////////////////////////////////////////////////////////////////////////// +// XULLabelTextLeafAccessible +//////////////////////////////////////////////////////////////////////////////// + +role +XULLabelTextLeafAccessible::NativeRole() +{ + return roles::TEXT_LEAF; +} + +uint64_t +XULLabelTextLeafAccessible::NativeState() +{ + return TextLeafAccessibleWrap::NativeState() | states::READONLY; +} + + +//////////////////////////////////////////////////////////////////////////////// +// XULTooltipAccessible +//////////////////////////////////////////////////////////////////////////////// + +XULTooltipAccessible:: + XULTooltipAccessible(nsIContent* aContent, DocAccessible* aDoc) : + LeafAccessible(aContent, aDoc) +{ +} + +uint64_t +XULTooltipAccessible::NativeState() +{ + return LeafAccessible::NativeState() | states::READONLY; +} + +role +XULTooltipAccessible::NativeRole() +{ + return roles::TOOLTIP; +} + + +//////////////////////////////////////////////////////////////////////////////// +// XULLinkAccessible +//////////////////////////////////////////////////////////////////////////////// + +XULLinkAccessible:: + XULLinkAccessible(nsIContent* aContent, DocAccessible* aDoc) : + XULLabelAccessible(aContent, aDoc) +{ +} + +XULLinkAccessible::~XULLinkAccessible() +{ +} + +//////////////////////////////////////////////////////////////////////////////// +// XULLinkAccessible: Accessible + +void +XULLinkAccessible::Value(nsString& aValue) +{ + aValue.Truncate(); + + mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::href, aValue); +} + +ENameValueFlag +XULLinkAccessible::NativeName(nsString& aName) +{ + mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::value, aName); + if (!aName.IsEmpty()) + return eNameOK; + + nsTextEquivUtils::GetNameFromSubtree(this, aName); + return aName.IsEmpty() ? eNameOK : eNameFromSubtree; +} + +role +XULLinkAccessible::NativeRole() +{ + return roles::LINK; +} + + +uint64_t +XULLinkAccessible::NativeLinkState() const +{ + return states::LINKED; +} + +uint8_t +XULLinkAccessible::ActionCount() +{ + return 1; +} + +void +XULLinkAccessible::ActionNameAt(uint8_t aIndex, nsAString& aName) +{ + aName.Truncate(); + + if (aIndex == eAction_Jump) + aName.AssignLiteral("jump"); +} + +bool +XULLinkAccessible::DoAction(uint8_t aIndex) +{ + if (aIndex != eAction_Jump) + return false; + + DoCommand(); + return true; +} + +//////////////////////////////////////////////////////////////////////////////// +// XULLinkAccessible: HyperLinkAccessible + +bool +XULLinkAccessible::IsLink() +{ + // Expose HyperLinkAccessible unconditionally. + return true; +} + +uint32_t +XULLinkAccessible::StartOffset() +{ + // If XUL link accessible is not contained by hypertext accessible then + // start offset matches index in parent because the parent doesn't contains + // a text. + // XXX: accessible parent of XUL link accessible should be a hypertext + // accessible. + if (Accessible::IsLink()) + return Accessible::StartOffset(); + return IndexInParent(); +} + +uint32_t +XULLinkAccessible::EndOffset() +{ + if (Accessible::IsLink()) + return Accessible::EndOffset(); + return IndexInParent() + 1; +} + +already_AddRefed +XULLinkAccessible::AnchorURIAt(uint32_t aAnchorIndex) +{ + if (aAnchorIndex != 0) + return nullptr; + + nsAutoString href; + mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::href, href); + + nsCOMPtr baseURI = mContent->GetBaseURI(); + nsIDocument* document = mContent->OwnerDoc(); + + nsCOMPtr anchorURI; + NS_NewURI(getter_AddRefs(anchorURI), href, + document->GetDocumentCharacterSet().get(), + baseURI); + + return anchorURI.forget(); +} -- cgit v1.2.3