forked from mirrors/gecko-dev
faf9db9dc8
Reviewed in bug 1368290, but since it's not needed... MozReview-Commit-ID: FzwMVw1y0EF Signed-off-by: Emilio Cobos Álvarez <emilio@crisal.io>
115 lines
3.1 KiB
C++
115 lines
3.1 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/. */
|
|
|
|
#ifndef mozilla_PostTraversalTask_h
|
|
#define mozilla_PostTraversalTask_h
|
|
|
|
#include "nscore.h"
|
|
|
|
/* a task to be performed immediately after a Servo traversal */
|
|
|
|
namespace mozilla {
|
|
namespace dom {
|
|
class FontFace;
|
|
class FontFaceSet;
|
|
} // namespace dom
|
|
} // namespace mozilla
|
|
class gfxUserFontEntry;
|
|
|
|
namespace mozilla {
|
|
|
|
/**
|
|
* A PostTraversalTask is a task to be performed immediately after a Servo
|
|
* traversal. There are just a few tasks we need to perform, so we use this
|
|
* class rather than Runnables, to avoid virtual calls and some allocations.
|
|
*
|
|
* A PostTraversalTask is only safe to run immediately after the Servo
|
|
* traversal, since it can hold raw pointers to DOM objects.
|
|
*/
|
|
class PostTraversalTask
|
|
{
|
|
public:
|
|
static PostTraversalTask ResolveFontFaceLoadedPromise(dom::FontFace* aFontFace)
|
|
{
|
|
auto task = PostTraversalTask(Type::ResolveFontFaceLoadedPromise);
|
|
task.mTarget = aFontFace;
|
|
return task;
|
|
}
|
|
|
|
static PostTraversalTask RejectFontFaceLoadedPromise(dom::FontFace* aFontFace,
|
|
nsresult aResult)
|
|
{
|
|
auto task = PostTraversalTask(Type::ResolveFontFaceLoadedPromise);
|
|
task.mTarget = aFontFace;
|
|
task.mResult = aResult;
|
|
return task;
|
|
}
|
|
|
|
static PostTraversalTask DispatchLoadingEventAndReplaceReadyPromise(
|
|
dom::FontFaceSet* aFontFaceSet)
|
|
{
|
|
auto task =
|
|
PostTraversalTask(Type::DispatchLoadingEventAndReplaceReadyPromise);
|
|
task.mTarget = aFontFaceSet;
|
|
return task;
|
|
}
|
|
|
|
static PostTraversalTask DispatchFontFaceSetCheckLoadingFinishedAfterDelay(
|
|
dom::FontFaceSet* aFontFaceSet)
|
|
{
|
|
auto task =
|
|
PostTraversalTask(Type::DispatchFontFaceSetCheckLoadingFinishedAfterDelay);
|
|
task.mTarget = aFontFaceSet;
|
|
return task;
|
|
}
|
|
|
|
static PostTraversalTask LoadFontEntry(gfxUserFontEntry* aFontEntry)
|
|
{
|
|
auto task = PostTraversalTask(Type::LoadFontEntry);
|
|
task.mTarget = aFontEntry;
|
|
return task;
|
|
}
|
|
|
|
void Run();
|
|
|
|
private:
|
|
// For any new raw pointer type that we need to store in a PostTraversalTask,
|
|
// please add an assertion that class' destructor that we are not in a Servo
|
|
// traversal, to protect against the possibility of having dangling pointers.
|
|
enum class Type
|
|
{
|
|
// mTarget (FontFace*)
|
|
ResolveFontFaceLoadedPromise,
|
|
|
|
// mTarget (FontFace*)
|
|
// mResult
|
|
RejectFontFaceLoadedPromise,
|
|
|
|
// mTarget (FontFaceSet*)
|
|
DispatchLoadingEventAndReplaceReadyPromise,
|
|
|
|
// mTarget (FontFaceSet*)
|
|
DispatchFontFaceSetCheckLoadingFinishedAfterDelay,
|
|
|
|
// mTarget (gfxUserFontEntry*)
|
|
LoadFontEntry,
|
|
};
|
|
|
|
explicit PostTraversalTask(Type aType)
|
|
: mType(aType)
|
|
, mTarget(nullptr)
|
|
, mResult(NS_OK)
|
|
{
|
|
}
|
|
|
|
Type mType;
|
|
void* mTarget;
|
|
nsresult mResult;
|
|
};
|
|
|
|
} // namespace mozilla
|
|
|
|
#endif // mozilla_PostTraversalTask_h
|