mirror of
https://github.com/classilla/tenfourfox.git
synced 2024-09-09 04:54:33 +00:00
128 lines
4.1 KiB
C++
128 lines
4.1 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/. */
|
||
|
|
||
|
/**
|
||
|
* A fake content node class so that the image frame for
|
||
|
* content: url(foo);
|
||
|
* in CSS can have an nsIImageLoadingContent but use an
|
||
|
* imgIRequest that's already been loaded from the style system.
|
||
|
*/
|
||
|
|
||
|
#include "nsContentCreatorFunctions.h"
|
||
|
#include "nsXMLElement.h"
|
||
|
#include "nsImageLoadingContent.h"
|
||
|
#include "imgIRequest.h"
|
||
|
#include "mozilla/BasicEvents.h"
|
||
|
#include "mozilla/EventDispatcher.h"
|
||
|
#include "mozilla/EventStates.h"
|
||
|
|
||
|
using namespace mozilla;
|
||
|
|
||
|
class nsGenConImageContent final : public nsXMLElement,
|
||
|
public nsImageLoadingContent
|
||
|
{
|
||
|
public:
|
||
|
explicit nsGenConImageContent(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
|
||
|
: nsXMLElement(aNodeInfo)
|
||
|
{
|
||
|
// nsImageLoadingContent starts out broken, so we start out
|
||
|
// suppressed to match it.
|
||
|
AddStatesSilently(NS_EVENT_STATE_SUPPRESSED);
|
||
|
}
|
||
|
|
||
|
nsresult Init(imgRequestProxy* aImageRequest)
|
||
|
{
|
||
|
// No need to notify, since we have no frame.
|
||
|
return UseAsPrimaryRequest(aImageRequest, false, eImageLoadType_Normal);
|
||
|
}
|
||
|
|
||
|
// nsIContent overrides
|
||
|
virtual nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent,
|
||
|
nsIContent* aBindingParent,
|
||
|
bool aCompileEventHandlers) override;
|
||
|
virtual void UnbindFromTree(bool aDeep, bool aNullParent) override;
|
||
|
virtual EventStates IntrinsicState() const override;
|
||
|
|
||
|
virtual nsresult PreHandleEvent(EventChainPreVisitor& aVisitor) override
|
||
|
{
|
||
|
MOZ_ASSERT(IsInNativeAnonymousSubtree());
|
||
|
if (aVisitor.mEvent->mMessage == eLoad ||
|
||
|
aVisitor.mEvent->mMessage == eLoadError) {
|
||
|
// Don't propagate the events to the parent.
|
||
|
return NS_OK;
|
||
|
}
|
||
|
return nsXMLElement::PreHandleEvent(aVisitor);
|
||
|
}
|
||
|
|
||
|
private:
|
||
|
virtual ~nsGenConImageContent();
|
||
|
|
||
|
public:
|
||
|
NS_DECL_ISUPPORTS_INHERITED
|
||
|
};
|
||
|
|
||
|
NS_IMPL_ISUPPORTS_INHERITED(nsGenConImageContent,
|
||
|
nsXMLElement,
|
||
|
nsIImageLoadingContent,
|
||
|
imgINotificationObserver,
|
||
|
imgIOnloadBlocker)
|
||
|
|
||
|
nsresult
|
||
|
NS_NewGenConImageContent(nsIContent** aResult, already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
|
||
|
imgRequestProxy* aImageRequest)
|
||
|
{
|
||
|
NS_PRECONDITION(aImageRequest, "Must have request!");
|
||
|
nsGenConImageContent *it = new nsGenConImageContent(aNodeInfo);
|
||
|
NS_ADDREF(*aResult = it);
|
||
|
nsresult rv = it->Init(aImageRequest);
|
||
|
if (NS_FAILED(rv))
|
||
|
NS_RELEASE(*aResult);
|
||
|
return rv;
|
||
|
}
|
||
|
|
||
|
nsGenConImageContent::~nsGenConImageContent()
|
||
|
{
|
||
|
DestroyImageLoadingContent();
|
||
|
}
|
||
|
|
||
|
nsresult
|
||
|
nsGenConImageContent::BindToTree(nsIDocument* aDocument, nsIContent* aParent,
|
||
|
nsIContent* aBindingParent,
|
||
|
bool aCompileEventHandlers)
|
||
|
{
|
||
|
nsresult rv;
|
||
|
rv = nsXMLElement::BindToTree(aDocument, aParent, aBindingParent,
|
||
|
aCompileEventHandlers);
|
||
|
NS_ENSURE_SUCCESS(rv, rv);
|
||
|
|
||
|
nsImageLoadingContent::BindToTree(aDocument, aParent, aBindingParent,
|
||
|
aCompileEventHandlers);
|
||
|
return NS_OK;
|
||
|
}
|
||
|
|
||
|
void
|
||
|
nsGenConImageContent::UnbindFromTree(bool aDeep, bool aNullParent)
|
||
|
{
|
||
|
nsImageLoadingContent::UnbindFromTree(aDeep, aNullParent);
|
||
|
nsXMLElement::UnbindFromTree(aDeep, aNullParent);
|
||
|
}
|
||
|
|
||
|
EventStates
|
||
|
nsGenConImageContent::IntrinsicState() const
|
||
|
{
|
||
|
EventStates state = nsXMLElement::IntrinsicState();
|
||
|
|
||
|
EventStates imageState = nsImageLoadingContent::ImageState();
|
||
|
if (imageState.HasAtLeastOneOfStates(NS_EVENT_STATE_BROKEN | NS_EVENT_STATE_USERDISABLED)) {
|
||
|
// We should never be in an error state; if the image fails to load, we
|
||
|
// just go to the suppressed state.
|
||
|
imageState |= NS_EVENT_STATE_SUPPRESSED;
|
||
|
imageState &= ~NS_EVENT_STATE_BROKEN;
|
||
|
}
|
||
|
imageState &= ~NS_EVENT_STATE_LOADING;
|
||
|
return state | imageState;
|
||
|
}
|