summaryrefslogtreecommitdiffstats
path: root/dom/html/HTMLStyleElement.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'dom/html/HTMLStyleElement.cpp')
-rw-r--r--dom/html/HTMLStyleElement.cpp195
1 files changed, 195 insertions, 0 deletions
diff --git a/dom/html/HTMLStyleElement.cpp b/dom/html/HTMLStyleElement.cpp
new file mode 100644
index 0000000000..28aa1edccd
--- /dev/null
+++ b/dom/html/HTMLStyleElement.cpp
@@ -0,0 +1,195 @@
+/* -*- 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/HTMLStyleElement.h"
+#include "mozilla/dom/HTMLStyleElementBinding.h"
+#include "nsGkAtoms.h"
+#include "nsStyleConsts.h"
+#include "mozilla/dom/Document.h"
+#include "mozilla/dom/ReferrerInfo.h"
+#include "nsUnicharUtils.h"
+#include "nsThreadUtils.h"
+#include "nsContentUtils.h"
+#include "nsStubMutationObserver.h"
+
+NS_IMPL_NS_NEW_HTML_ELEMENT(Style)
+
+namespace mozilla::dom {
+
+HTMLStyleElement::HTMLStyleElement(
+ already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
+ : nsGenericHTMLElement(std::move(aNodeInfo)) {
+ AddMutationObserver(this);
+}
+
+HTMLStyleElement::~HTMLStyleElement() = default;
+
+NS_IMPL_CYCLE_COLLECTION_CLASS(HTMLStyleElement)
+
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(HTMLStyleElement,
+ nsGenericHTMLElement)
+ tmp->LinkStyle::Traverse(cb);
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
+
+NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(HTMLStyleElement,
+ nsGenericHTMLElement)
+ tmp->LinkStyle::Unlink();
+NS_IMPL_CYCLE_COLLECTION_UNLINK_END
+
+NS_IMPL_ISUPPORTS_CYCLE_COLLECTION_INHERITED(HTMLStyleElement,
+ nsGenericHTMLElement,
+ nsIMutationObserver)
+
+NS_IMPL_ELEMENT_CLONE(HTMLStyleElement)
+
+bool HTMLStyleElement::Disabled() const {
+ StyleSheet* ss = GetSheet();
+ return ss && ss->Disabled();
+}
+
+void HTMLStyleElement::SetDisabled(bool aDisabled) {
+ if (StyleSheet* ss = GetSheet()) {
+ ss->SetDisabled(aDisabled);
+ }
+}
+
+void HTMLStyleElement::CharacterDataChanged(nsIContent* aContent,
+ const CharacterDataChangeInfo&) {
+ ContentChanged(aContent);
+}
+
+void HTMLStyleElement::ContentAppended(nsIContent* aFirstNewContent) {
+ ContentChanged(aFirstNewContent->GetParent());
+}
+
+void HTMLStyleElement::ContentInserted(nsIContent* aChild) {
+ ContentChanged(aChild);
+}
+
+void HTMLStyleElement::ContentRemoved(nsIContent* aChild,
+ nsIContent* aPreviousSibling) {
+ ContentChanged(aChild);
+}
+
+void HTMLStyleElement::ContentChanged(nsIContent* aContent) {
+ mTriggeringPrincipal = nullptr;
+ if (nsContentUtils::IsInSameAnonymousTree(this, aContent)) {
+ Unused << UpdateStyleSheetInternal(nullptr, nullptr);
+ }
+}
+
+nsresult HTMLStyleElement::BindToTree(BindContext& aContext, nsINode& aParent) {
+ nsresult rv = nsGenericHTMLElement::BindToTree(aContext, aParent);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ void (HTMLStyleElement::*update)() =
+ &HTMLStyleElement::UpdateStyleSheetInternal;
+ nsContentUtils::AddScriptRunner(
+ NewRunnableMethod("dom::HTMLStyleElement::BindToTree", this, update));
+
+ return rv;
+}
+
+void HTMLStyleElement::UnbindFromTree(bool aNullParent) {
+ RefPtr<Document> oldDoc = GetUncomposedDoc();
+ ShadowRoot* oldShadow = GetContainingShadow();
+
+ nsGenericHTMLElement::UnbindFromTree(aNullParent);
+
+ Unused << UpdateStyleSheetInternal(oldDoc, oldShadow);
+}
+
+void HTMLStyleElement::AfterSetAttr(int32_t aNameSpaceID, nsAtom* aName,
+ const nsAttrValue* aValue,
+ const nsAttrValue* aOldValue,
+ nsIPrincipal* aSubjectPrincipal,
+ bool aNotify) {
+ if (aNameSpaceID == kNameSpaceID_None) {
+ if (aName == nsGkAtoms::title || aName == nsGkAtoms::media ||
+ aName == nsGkAtoms::type) {
+ Unused << UpdateStyleSheetInternal(nullptr, nullptr, ForceUpdate::Yes);
+ }
+ }
+
+ return nsGenericHTMLElement::AfterSetAttr(
+ aNameSpaceID, aName, aValue, aOldValue, aSubjectPrincipal, aNotify);
+}
+
+void HTMLStyleElement::GetInnerHTML(nsAString& aInnerHTML,
+ OOMReporter& aError) {
+ if (!nsContentUtils::GetNodeTextContent(this, false, aInnerHTML, fallible)) {
+ aError.ReportOOM();
+ }
+}
+
+void HTMLStyleElement::SetInnerHTML(const nsAString& aInnerHTML,
+ nsIPrincipal* aScriptedPrincipal,
+ ErrorResult& aError) {
+ SetTextContentInternal(aInnerHTML, aScriptedPrincipal, aError);
+}
+
+void HTMLStyleElement::SetTextContentInternal(const nsAString& aTextContent,
+ nsIPrincipal* aScriptedPrincipal,
+ ErrorResult& aError) {
+ // Per spec, if we're setting text content to an empty string and don't
+ // already have any children, we should not trigger any mutation observers, or
+ // re-parse the stylesheet.
+ if (aTextContent.IsEmpty() && !GetFirstChild()) {
+ nsIPrincipal* principal =
+ mTriggeringPrincipal ? mTriggeringPrincipal.get() : NodePrincipal();
+ if (principal == aScriptedPrincipal) {
+ return;
+ }
+ }
+
+ SetEnableUpdates(false);
+
+ aError = nsContentUtils::SetNodeTextContent(this, aTextContent, true);
+
+ SetEnableUpdates(true);
+
+ mTriggeringPrincipal = aScriptedPrincipal;
+
+ Unused << UpdateStyleSheetInternal(nullptr, nullptr);
+}
+
+void HTMLStyleElement::SetDevtoolsAsTriggeringPrincipal() {
+ mTriggeringPrincipal = CreateDevtoolsPrincipal();
+}
+
+Maybe<LinkStyle::SheetInfo> HTMLStyleElement::GetStyleSheetInfo() {
+ if (!IsCSSMimeTypeAttributeForStyleElement(*this)) {
+ return Nothing();
+ }
+
+ nsAutoString title;
+ nsAutoString media;
+ GetTitleAndMediaForElement(*this, title, media);
+
+ return Some(SheetInfo{
+ *OwnerDoc(),
+ this,
+ nullptr,
+ do_AddRef(mTriggeringPrincipal),
+ MakeAndAddRef<ReferrerInfo>(*this),
+ CORS_NONE,
+ title,
+ media,
+ /* integrity = */ u""_ns,
+ /* nsStyleUtil::CSPAllowsInlineStyle takes care of nonce checking for
+ inline styles. Bug 1607011 */
+ /* nonce = */ u""_ns,
+ HasAlternateRel::No,
+ IsInline::Yes,
+ IsExplicitlyEnabled::No,
+ });
+}
+
+JSObject* HTMLStyleElement::WrapNode(JSContext* aCx,
+ JS::Handle<JSObject*> aGivenProto) {
+ return HTMLStyleElement_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+} // namespace mozilla::dom