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Moonchild
824d0cad58
In order to tailor certain security checks to the caller that is attempting to load a particular piece of content, we need to be able to attach an appropriate triggering principal to the corresponding requests. Since most HTML content is loaded based on attribute values, this means capturing the subject principal of the caller who sets those attributes, which in turn means we need to make it available to `AfterSetAttr` hooks on all relevant element types.
154 lines
4.4 KiB
C++
154 lines
4.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/EventDispatcher.h"
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#include "mozilla/EventStates.h"
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#include "mozilla/dom/HTMLOptGroupElement.h"
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#include "mozilla/dom/HTMLOptGroupElementBinding.h"
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#include "mozilla/dom/HTMLSelectElement.h" // SafeOptionListMutation
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#include "nsGkAtoms.h"
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#include "nsStyleConsts.h"
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#include "nsIFrame.h"
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#include "nsIFormControlFrame.h"
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#if defined(MOZ_X11)
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#include "X11UndefineNone.h"
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#endif
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NS_IMPL_NS_NEW_HTML_ELEMENT(OptGroup)
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namespace mozilla {
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namespace dom {
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/**
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* The implementation of <optgroup>
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*/
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HTMLOptGroupElement::HTMLOptGroupElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
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: nsGenericHTMLElement(aNodeInfo)
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{
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// We start off enabled
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AddStatesSilently(NS_EVENT_STATE_ENABLED);
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}
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HTMLOptGroupElement::~HTMLOptGroupElement()
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{
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}
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NS_IMPL_ISUPPORTS_INHERITED(HTMLOptGroupElement, nsGenericHTMLElement,
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nsIDOMHTMLOptGroupElement)
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NS_IMPL_ELEMENT_CLONE(HTMLOptGroupElement)
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NS_IMPL_BOOL_ATTR(HTMLOptGroupElement, Disabled, disabled)
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NS_IMPL_STRING_ATTR(HTMLOptGroupElement, Label, label)
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nsresult
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HTMLOptGroupElement::GetEventTargetParent(EventChainPreVisitor& aVisitor)
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{
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aVisitor.mCanHandle = false;
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// Do not process any DOM events if the element is disabled
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// XXXsmaug This is not the right thing to do. But what is?
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if (HasAttr(kNameSpaceID_None, nsGkAtoms::disabled)) {
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return NS_OK;
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}
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nsIFrame* frame = GetPrimaryFrame();
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if (frame) {
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const nsStyleUserInterface* uiStyle = frame->StyleUserInterface();
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if (uiStyle->mUserInput == StyleUserInput::None ||
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uiStyle->mUserInput == StyleUserInput::Disabled) {
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return NS_OK;
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}
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}
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return nsGenericHTMLElement::GetEventTargetParent(aVisitor);
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}
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Element*
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HTMLOptGroupElement::GetSelect()
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{
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Element* parent = nsINode::GetParentElement();
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if (!parent || !parent->IsHTMLElement(nsGkAtoms::select)) {
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return nullptr;
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}
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return parent;
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}
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nsresult
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HTMLOptGroupElement::InsertChildAt(nsIContent* aKid,
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uint32_t aIndex,
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bool aNotify)
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{
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SafeOptionListMutation safeMutation(GetSelect(), this, aKid, aIndex, aNotify);
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nsresult rv = nsGenericHTMLElement::InsertChildAt(aKid, aIndex, aNotify);
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if (NS_FAILED(rv)) {
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safeMutation.MutationFailed();
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}
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return rv;
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}
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void
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HTMLOptGroupElement::RemoveChildAt(uint32_t aIndex, bool aNotify)
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{
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SafeOptionListMutation safeMutation(GetSelect(), this, nullptr, aIndex,
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aNotify);
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nsGenericHTMLElement::RemoveChildAt(aIndex, aNotify);
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}
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nsresult
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HTMLOptGroupElement::AfterSetAttr(int32_t aNameSpaceID, nsIAtom* aName,
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const nsAttrValue* aValue,
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const nsAttrValue* aOldValue,
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nsIPrincipal* aSubjectPrincipal,
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bool aNotify)
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{
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if (aNameSpaceID == kNameSpaceID_None && aName == nsGkAtoms::disabled) {
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// All our children <option> have their :disabled state depending on our
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// disabled attribute. We should make sure their state is updated.
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for (nsIContent* child = nsINode::GetFirstChild(); child;
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child = child->GetNextSibling()) {
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if (child->IsHTMLElement(nsGkAtoms::option)) {
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// No need to call |IsElement()| because it's an HTML element.
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child->AsElement()->UpdateState(true);
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}
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}
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}
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return nsGenericHTMLElement::AfterSetAttr(aNameSpaceID, aName, aValue,
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aOldValue, aSubjectPrincipal,
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aNotify);
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}
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EventStates
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HTMLOptGroupElement::IntrinsicState() const
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{
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EventStates state = nsGenericHTMLElement::IntrinsicState();
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if (HasAttr(kNameSpaceID_None, nsGkAtoms::disabled)) {
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state |= NS_EVENT_STATE_DISABLED;
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state &= ~NS_EVENT_STATE_ENABLED;
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} else {
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state &= ~NS_EVENT_STATE_DISABLED;
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state |= NS_EVENT_STATE_ENABLED;
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}
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return state;
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}
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JSObject*
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HTMLOptGroupElement::WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
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{
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return HTMLOptGroupElementBinding::Wrap(aCx, this, aGivenProto);
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}
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} // namespace dom
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} // namespace mozilla
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