mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-11 20:35:50 +00:00
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
130 lines
3.8 KiB
C++
130 lines
3.8 KiB
C++
/* -*- 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/. */
|
|
|
|
#ifndef mozilla_dom_HTMLSourceElement_h
|
|
#define mozilla_dom_HTMLSourceElement_h
|
|
|
|
#include "mozilla/Attributes.h"
|
|
#include "nsIDOMHTMLSourceElement.h"
|
|
#include "nsGenericHTMLElement.h"
|
|
#include "mozilla/dom/HTMLMediaElement.h"
|
|
|
|
class nsAttrValue;
|
|
|
|
namespace mozilla {
|
|
namespace dom {
|
|
|
|
class MediaList;
|
|
|
|
class HTMLSourceElement final : public nsGenericHTMLElement,
|
|
public nsIDOMHTMLSourceElement
|
|
{
|
|
public:
|
|
explicit HTMLSourceElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo);
|
|
|
|
// nsISupports
|
|
NS_DECL_ISUPPORTS_INHERITED
|
|
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(HTMLSourceElement,
|
|
nsGenericHTMLElement)
|
|
|
|
NS_IMPL_FROMCONTENT_HTML_WITH_TAG(HTMLSourceElement, source)
|
|
|
|
// nsIDOMHTMLSourceElement
|
|
NS_DECL_NSIDOMHTMLSOURCEELEMENT
|
|
|
|
virtual nsresult Clone(mozilla::dom::NodeInfo* aNodeInfo, nsINode** aResult,
|
|
bool aPreallocateChildren) const override;
|
|
|
|
// Override BindToTree() so that we can trigger a load when we add a
|
|
// child source element.
|
|
virtual nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent,
|
|
nsIContent* aBindingParent,
|
|
bool aCompileEventHandlers) override;
|
|
|
|
// If this element's media attr matches for its owner document. Returns true
|
|
// if no media attr was set.
|
|
bool MatchesCurrentMedia();
|
|
|
|
// True if a source tag would match the given media attribute for the
|
|
// specified document. Used by the preloader to determine valid <source> tags
|
|
// prior to DOM creation.
|
|
static bool WouldMatchMediaForDocument(const nsAString& aMediaStr,
|
|
const nsIDocument *aDocument);
|
|
|
|
// Return the MediaSource object if any associated with the src attribute
|
|
// when it was set.
|
|
MediaSource* GetSrcMediaSource() { return mSrcMediaSource; };
|
|
|
|
// WebIDL
|
|
void GetSrc(nsString& aSrc)
|
|
{
|
|
GetURIAttr(nsGkAtoms::src, nullptr, aSrc);
|
|
}
|
|
void SetSrc(const nsAString& aSrc, mozilla::ErrorResult& rv)
|
|
{
|
|
SetHTMLAttr(nsGkAtoms::src, aSrc, rv);
|
|
}
|
|
|
|
void GetType(DOMString& aType)
|
|
{
|
|
GetHTMLAttr(nsGkAtoms::type, aType);
|
|
}
|
|
void SetType(const nsAString& aType, ErrorResult& rv)
|
|
{
|
|
SetHTMLAttr(nsGkAtoms::type, aType, rv);
|
|
}
|
|
|
|
void GetSrcset(DOMString& aSrcset)
|
|
{
|
|
GetHTMLAttr(nsGkAtoms::srcset, aSrcset);
|
|
}
|
|
void SetSrcset(const nsAString& aSrcset, mozilla::ErrorResult& rv)
|
|
{
|
|
SetHTMLAttr(nsGkAtoms::srcset, aSrcset, rv);
|
|
}
|
|
|
|
void GetSizes(DOMString& aSizes)
|
|
{
|
|
GetHTMLAttr(nsGkAtoms::sizes, aSizes);
|
|
}
|
|
void SetSizes(const nsAString& aSizes, mozilla::ErrorResult& rv)
|
|
{
|
|
SetHTMLAttr(nsGkAtoms::sizes, aSizes, rv);
|
|
}
|
|
|
|
void GetMedia(DOMString& aMedia)
|
|
{
|
|
GetHTMLAttr(nsGkAtoms::media, aMedia);
|
|
}
|
|
void SetMedia(const nsAString& aMedia, mozilla::ErrorResult& rv)
|
|
{
|
|
SetHTMLAttr(nsGkAtoms::media, aMedia, rv);
|
|
}
|
|
|
|
protected:
|
|
virtual ~HTMLSourceElement();
|
|
|
|
virtual JSObject* WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
|
|
|
|
protected:
|
|
virtual nsresult AfterSetAttr(int32_t aNameSpaceID, nsIAtom* aName,
|
|
const nsAttrValue* aValue,
|
|
const nsAttrValue* aOldValue,
|
|
bool aNotify) override;
|
|
|
|
private:
|
|
RefPtr<MediaList> mMediaList;
|
|
RefPtr<MediaSource> mSrcMediaSource;
|
|
|
|
// Generates a new MediaList using the given input
|
|
void UpdateMediaList(const nsAttrValue* aValue);
|
|
};
|
|
|
|
} // namespace dom
|
|
} // namespace mozilla
|
|
|
|
#endif // mozilla_dom_HTMLSourceElement_h
|