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e74f1cd513
In order to facilitate the movement of code with side-effects called by Element::SetAttr to Element::BeforeSetAttr and Element::AfterSetAttr, Element::AfterSetAttr should have access to the old value of the attribute. This includes information about whether there was previously a value set or not. Accomplishing this involved passing an additional argument through functions that find and change the old attribute value in order to ensure that we can differentiate between an empty old value and an absent old value (attribute was not set). Note that while I tried to ensure that accurate values (and their absence) are reported to Element::AfterSetAttr, I largely ignored SVG. While the old value reported for SVG values should be however accurate the value already being reported to SetAttrAndNotify was, SVG elements do not currently report unset values properly because they will never pass a null pointer to SetAttrAndNotify. MozReview-Commit-ID: K1mha8CNFZP --HG-- extra : rebase_source : 42776eb01451d371e4aebcc17fe3dd112c8d268b
102 lines
2.8 KiB
C++
102 lines
2.8 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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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#ifndef mozilla_dom_HTMLMenuElement_h
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#define mozilla_dom_HTMLMenuElement_h
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#include "mozilla/Attributes.h"
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#include "nsIDOMHTMLMenuElement.h"
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#include "nsGenericHTMLElement.h"
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class nsIMenuBuilder;
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namespace mozilla {
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namespace dom {
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class HTMLMenuElement final : public nsGenericHTMLElement,
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public nsIDOMHTMLMenuElement
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{
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public:
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explicit HTMLMenuElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo);
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NS_IMPL_FROMCONTENT_HTML_WITH_TAG(HTMLMenuElement, menu)
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// nsISupports
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NS_DECL_ISUPPORTS_INHERITED
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// nsIDOMHTMLMenuElement
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NS_DECL_NSIDOMHTMLMENUELEMENT
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virtual nsresult AfterSetAttr(int32_t aNamespaceID, nsIAtom* aName,
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const nsAttrValue* aValue,
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const nsAttrValue* aOldValue,
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bool aNotify) override;
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virtual bool ParseAttribute(int32_t aNamespaceID,
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nsIAtom* aAttribute,
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const nsAString& aValue,
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nsAttrValue& aResult) override;
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virtual nsresult Clone(mozilla::dom::NodeInfo *aNodeInfo, nsINode **aResult,
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bool aPreallocateChildren) const override;
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uint8_t GetType() const { return mType; }
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// WebIDL
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// The XPCOM GetType is OK for us
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void SetType(const nsAString& aType, ErrorResult& aError)
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{
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SetHTMLAttr(nsGkAtoms::type, aType, aError);
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}
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// The XPCOM GetLabel is OK for us
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void SetLabel(const nsAString& aLabel, ErrorResult& aError)
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{
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SetHTMLAttr(nsGkAtoms::label, aLabel, aError);
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}
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bool Compact() const
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{
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return GetBoolAttr(nsGkAtoms::compact);
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}
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void SetCompact(bool aCompact, ErrorResult& aError)
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{
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SetHTMLBoolAttr(nsGkAtoms::compact, aCompact, aError);
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}
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void SendShowEvent();
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already_AddRefed<nsIMenuBuilder> CreateBuilder();
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void Build(nsIMenuBuilder* aBuilder);
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protected:
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virtual ~HTMLMenuElement();
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virtual JSObject* WrapNode(JSContext *aCx, JS::Handle<JSObject*> aGivenProto) override;
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protected:
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static bool CanLoadIcon(nsIContent* aContent, const nsAString& aIcon);
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void BuildSubmenu(const nsAString& aLabel,
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nsIContent* aContent,
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nsIMenuBuilder* aBuilder);
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void TraverseContent(nsIContent* aContent,
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nsIMenuBuilder* aBuilder,
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int8_t& aSeparator);
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void AddSeparator(nsIMenuBuilder* aBuilder, int8_t& aSeparator);
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uint8_t mType;
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_HTMLMenuElement_h
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