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-rw-r--r--dom/html/HTMLSharedElement.cpp360
1 files changed, 360 insertions, 0 deletions
diff --git a/dom/html/HTMLSharedElement.cpp b/dom/html/HTMLSharedElement.cpp
new file mode 100644
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--- /dev/null
+++ b/dom/html/HTMLSharedElement.cpp
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+/* -*- 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