diff options
Diffstat (limited to 'dom/html/HTMLSharedElement.cpp')
| -rw-r--r-- | dom/html/HTMLSharedElement.cpp | 360 |
1 files changed, 360 insertions, 0 deletions
diff --git a/dom/html/HTMLSharedElement.cpp b/dom/html/HTMLSharedElement.cpp new file mode 100644 index 000000000..bcb84d29b --- /dev/null +++ b/dom/html/HTMLSharedElement.cpp @@ -0,0 +1,360 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +/* 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 "mozilla/dom/HTMLSharedElement.h" +#include "mozilla/dom/HTMLBaseElementBinding.h" +#include "mozilla/dom/HTMLDirectoryElementBinding.h" +#include "mozilla/dom/HTMLHeadElementBinding.h" +#include "mozilla/dom/HTMLHtmlElementBinding.h" +#include "mozilla/dom/HTMLParamElementBinding.h" +#include "mozilla/dom/HTMLQuoteElementBinding.h" + +#include "nsAttrValueInlines.h" +#include "nsStyleConsts.h" +#include "nsRuleData.h" +#include "nsMappedAttributes.h" +#include "nsContentUtils.h" +#include "nsIContentSecurityPolicy.h" +#include "nsIURI.h" + +NS_IMPL_NS_NEW_HTML_ELEMENT(Shared) + +namespace mozilla { +namespace dom { + +extern nsAttrValue::EnumTable kListTypeTable[]; + +HTMLSharedElement::~HTMLSharedElement() +{ +} + +NS_IMPL_ADDREF_INHERITED(HTMLSharedElement, Element) +NS_IMPL_RELEASE_INHERITED(HTMLSharedElement, Element) + +// QueryInterface implementation for HTMLSharedElement +NS_INTERFACE_MAP_BEGIN(HTMLSharedElement) + NS_INTERFACE_MAP_ENTRY_IF_TAG(nsIDOMHTMLBaseElement, base) + NS_INTERFACE_MAP_ENTRY_IF_TAG(nsIDOMHTMLDirectoryElement, dir) + NS_INTERFACE_MAP_ENTRY_IF_TAG(nsIDOMHTMLQuoteElement, q) + NS_INTERFACE_MAP_ENTRY_IF_TAG(nsIDOMHTMLQuoteElement, blockquote) + NS_INTERFACE_MAP_ENTRY_IF_TAG(nsIDOMHTMLHeadElement, head) + NS_INTERFACE_MAP_ENTRY_IF_TAG(nsIDOMHTMLHtmlElement, html) +NS_INTERFACE_MAP_END_INHERITING(nsGenericHTMLElement) + + +NS_IMPL_ELEMENT_CLONE(HTMLSharedElement) + +// nsIDOMHTMLQuoteElement +NS_IMPL_URI_ATTR(HTMLSharedElement, Cite, cite) + +// nsIDOMHTMLHeadElement +// Empty + +// nsIDOMHTMLHtmlElement +NS_IMPL_STRING_ATTR(HTMLSharedElement, Version, version) + +// nsIDOMHTMLBaseElement +NS_IMPL_STRING_ATTR(HTMLSharedElement, Target, target) + +NS_IMETHODIMP +HTMLSharedElement::GetHref(nsAString& aValue) +{ + MOZ_ASSERT(mNodeInfo->Equals(nsGkAtoms::base), + "This should only get called for <base> elements"); + nsAutoString href; + GetAttr(kNameSpaceID_None, nsGkAtoms::href, href); + + nsCOMPtr<nsIURI> uri; + nsIDocument* doc = OwnerDoc(); + nsContentUtils::NewURIWithDocumentCharset( + getter_AddRefs(uri), href, doc, doc->GetFallbackBaseURI()); + + if (!uri) { + aValue = href; + return NS_OK; + } + + nsAutoCString spec; + uri->GetSpec(spec); + CopyUTF8toUTF16(spec, aValue); + + return NS_OK; +} + +NS_IMETHODIMP +HTMLSharedElement::SetHref(const nsAString& aValue) +{ + return SetAttrHelper(nsGkAtoms::href, aValue); +} + + +bool +HTMLSharedElement::ParseAttribute(int32_t aNamespaceID, + nsIAtom* aAttribute, + const nsAString& aValue, + nsAttrValue& aResult) +{ + if (aNamespaceID == kNameSpaceID_None && + mNodeInfo->Equals(nsGkAtoms::dir)) { + if (aAttribute == nsGkAtoms::type) { + return aResult.ParseEnumValue(aValue, mozilla::dom::kListTypeTable, false); + } + if (aAttribute == nsGkAtoms::start) { + return aResult.ParseIntWithBounds(aValue, 1); + } + } + + return nsGenericHTMLElement::ParseAttribute(aNamespaceID, aAttribute, aValue, + aResult); +} + +static void +DirectoryMapAttributesIntoRule(const nsMappedAttributes* aAttributes, + nsRuleData* aData) +{ + if (aData->mSIDs & NS_STYLE_INHERIT_BIT(List)) { + nsCSSValue* listStyleType = aData->ValueForListStyleType(); + if (listStyleType->GetUnit() == eCSSUnit_Null) { + // type: enum + const nsAttrValue* value = aAttributes->GetAttr(nsGkAtoms::type); + if (value) { + if (value->Type() == nsAttrValue::eEnum) { + listStyleType->SetIntValue(value->GetEnumValue(), eCSSUnit_Enumerated); + } else { + listStyleType->SetIntValue(NS_STYLE_LIST_STYLE_DISC, eCSSUnit_Enumerated); + } + } + } + } + + nsGenericHTMLElement::MapCommonAttributesInto(aAttributes, aData); +} + +NS_IMETHODIMP_(bool) +HTMLSharedElement::IsAttributeMapped(const nsIAtom* aAttribute) const +{ + if (mNodeInfo->Equals(nsGkAtoms::dir)) { + static const MappedAttributeEntry attributes[] = { + { &nsGkAtoms::type }, + // { &nsGkAtoms::compact }, // XXX + { nullptr} + }; + + static const MappedAttributeEntry* const map[] = { + attributes, + sCommonAttributeMap, + }; + + return FindAttributeDependence(aAttribute, map); + } + + return nsGenericHTMLElement::IsAttributeMapped(aAttribute); +} + +static void +SetBaseURIUsingFirstBaseWithHref(nsIDocument* aDocument, nsIContent* aMustMatch) +{ + NS_PRECONDITION(aDocument, "Need a document!"); + + for (nsIContent* child = aDocument->GetFirstChild(); child; + child = child->GetNextNode()) { + if (child->IsHTMLElement(nsGkAtoms::base) && + child->HasAttr(kNameSpaceID_None, nsGkAtoms::href)) { + if (aMustMatch && child != aMustMatch) { + return; + } + + // Resolve the <base> element's href relative to our document's + // fallback base URI. + nsAutoString href; + child->GetAttr(kNameSpaceID_None, nsGkAtoms::href, href); + + nsCOMPtr<nsIURI> newBaseURI; + nsContentUtils::NewURIWithDocumentCharset( + getter_AddRefs(newBaseURI), href, aDocument, + aDocument->GetFallbackBaseURI()); + + // Check if CSP allows this base-uri + nsCOMPtr<nsIContentSecurityPolicy> csp; + nsresult rv = aDocument->NodePrincipal()->GetCsp(getter_AddRefs(csp)); + NS_ASSERTION(NS_SUCCEEDED(rv), "Getting CSP Failed"); + // For all the different error cases we assign a nullptr to + // newBaseURI, so we basically call aDocument->SetBaseURI(nullptr); + if (NS_FAILED(rv)) { + newBaseURI = nullptr; + } + if (csp && newBaseURI) { + // base-uri is only enforced if explicitly defined in the + // policy - do *not* consult default-src, see: + // http://www.w3.org/TR/CSP2/#directive-default-src + bool cspPermitsBaseURI = true; + rv = csp->Permits(newBaseURI, nsIContentSecurityPolicy::BASE_URI_DIRECTIVE, + true, &cspPermitsBaseURI); + if (NS_FAILED(rv) || !cspPermitsBaseURI) { + newBaseURI = nullptr; + } + } + aDocument->SetBaseURI(newBaseURI); + aDocument->SetChromeXHRDocBaseURI(nullptr); + return; + } + } + + aDocument->SetBaseURI(nullptr); +} + +static void +SetBaseTargetUsingFirstBaseWithTarget(nsIDocument* aDocument, + nsIContent* aMustMatch) +{ + NS_PRECONDITION(aDocument, "Need a document!"); + + for (nsIContent* child = aDocument->GetFirstChild(); child; + child = child->GetNextNode()) { + if (child->IsHTMLElement(nsGkAtoms::base) && + child->HasAttr(kNameSpaceID_None, nsGkAtoms::target)) { + if (aMustMatch && child != aMustMatch) { + return; + } + + nsString target; + child->GetAttr(kNameSpaceID_None, nsGkAtoms::target, target); + aDocument->SetBaseTarget(target); + return; + } + } + + aDocument->SetBaseTarget(EmptyString()); +} + +nsresult +HTMLSharedElement::SetAttr(int32_t aNameSpaceID, nsIAtom* aName, + nsIAtom* aPrefix, const nsAString& aValue, + bool aNotify) +{ + nsresult rv = nsGenericHTMLElement::SetAttr(aNameSpaceID, aName, aPrefix, + aValue, aNotify); + NS_ENSURE_SUCCESS(rv, rv); + + // If the href attribute of a <base> tag is changing, we may need to update + // the document's base URI, which will cause all the links on the page to be + // re-resolved given the new base. If the target attribute is changing, we + // similarly need to change the base target. + if (mNodeInfo->Equals(nsGkAtoms::base) && + aNameSpaceID == kNameSpaceID_None && + IsInUncomposedDoc()) { + if (aName == nsGkAtoms::href) { + SetBaseURIUsingFirstBaseWithHref(GetUncomposedDoc(), this); + } else if (aName == nsGkAtoms::target) { + SetBaseTargetUsingFirstBaseWithTarget(GetUncomposedDoc(), this); + } + } + + return NS_OK; +} + +nsresult +HTMLSharedElement::UnsetAttr(int32_t aNameSpaceID, nsIAtom* aName, + bool aNotify) +{ + nsresult rv = nsGenericHTMLElement::UnsetAttr(aNameSpaceID, aName, aNotify); + NS_ENSURE_SUCCESS(rv, rv); + + // If we're the first <base> with an href and our href attribute is being + // unset, then we're no longer the first <base> with an href, and we need to + // find the new one. Similar for target. + if (mNodeInfo->Equals(nsGkAtoms::base) && + aNameSpaceID == kNameSpaceID_None && + IsInUncomposedDoc()) { + if (aName == nsGkAtoms::href) { + SetBaseURIUsingFirstBaseWithHref(GetUncomposedDoc(), nullptr); + } else if (aName == nsGkAtoms::target) { + SetBaseTargetUsingFirstBaseWithTarget(GetUncomposedDoc(), nullptr); + } + } + + return NS_OK; +} + +nsresult +HTMLSharedElement::BindToTree(nsIDocument* aDocument, nsIContent* aParent, + nsIContent* aBindingParent, + bool aCompileEventHandlers) +{ + nsresult rv = nsGenericHTMLElement::BindToTree(aDocument, aParent, + aBindingParent, + aCompileEventHandlers); + NS_ENSURE_SUCCESS(rv, rv); + + // The document stores a pointer to its base URI and base target, which we may + // need to update here. + if (mNodeInfo->Equals(nsGkAtoms::base) && + aDocument) { + if (HasAttr(kNameSpaceID_None, nsGkAtoms::href)) { + SetBaseURIUsingFirstBaseWithHref(aDocument, this); + } + if (HasAttr(kNameSpaceID_None, nsGkAtoms::target)) { + SetBaseTargetUsingFirstBaseWithTarget(aDocument, this); + } + } + + return NS_OK; +} + +void +HTMLSharedElement::UnbindFromTree(bool aDeep, bool aNullParent) +{ + nsIDocument* doc = GetUncomposedDoc(); + + nsGenericHTMLElement::UnbindFromTree(aDeep, aNullParent); + + // If we're removing a <base> from a document, we may need to update the + // document's base URI and base target + if (doc && mNodeInfo->Equals(nsGkAtoms::base)) { + if (HasAttr(kNameSpaceID_None, nsGkAtoms::href)) { + SetBaseURIUsingFirstBaseWithHref(doc, nullptr); + } + if (HasAttr(kNameSpaceID_None, nsGkAtoms::target)) { + SetBaseTargetUsingFirstBaseWithTarget(doc, nullptr); + } + } +} + +nsMapRuleToAttributesFunc +HTMLSharedElement::GetAttributeMappingFunction() const +{ + if (mNodeInfo->Equals(nsGkAtoms::dir)) { + return &DirectoryMapAttributesIntoRule; + } + + return nsGenericHTMLElement::GetAttributeMappingFunction(); +} + +JSObject* +HTMLSharedElement::WrapNode(JSContext *aCx, JS::Handle<JSObject*> aGivenProto) +{ + if (mNodeInfo->Equals(nsGkAtoms::param)) { + return HTMLParamElementBinding::Wrap(aCx, this, aGivenProto); + } + if (mNodeInfo->Equals(nsGkAtoms::base)) { + return HTMLBaseElementBinding::Wrap(aCx, this, aGivenProto); + } + if (mNodeInfo->Equals(nsGkAtoms::dir)) { + return HTMLDirectoryElementBinding::Wrap(aCx, this, aGivenProto); + } + if (mNodeInfo->Equals(nsGkAtoms::q) || + mNodeInfo->Equals(nsGkAtoms::blockquote)) { + return HTMLQuoteElementBinding::Wrap(aCx, this, aGivenProto); + } + if (mNodeInfo->Equals(nsGkAtoms::head)) { + return HTMLHeadElementBinding::Wrap(aCx, this, aGivenProto); + } + MOZ_ASSERT(mNodeInfo->Equals(nsGkAtoms::html)); + return HTMLHtmlElementBinding::Wrap(aCx, this, aGivenProto); +} + +} // namespace dom +} // namespace mozilla |