Sylvestre Ledru
55481ac4b5
replaced by .editorconfig Differential Revision: https://phabricator.services.mozilla.com/D287852
119 lines
3.9 KiB
C++
119 lines
3.9 KiB
C++
/* 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_SharedStyleSheetCache_h_
|
|
#define mozilla_SharedStyleSheetCache_h_
|
|
|
|
// The shared style sheet cache is a cache that allows us to share sheets across
|
|
// documents.
|
|
|
|
#include "mozilla/MemoryReporting.h"
|
|
#include "mozilla/SharedSubResourceCache.h"
|
|
#include "mozilla/css/Loader.h"
|
|
#include "nsIMemoryReporter.h"
|
|
#include "nsIObserver.h"
|
|
|
|
namespace mozilla {
|
|
|
|
class StyleSheet;
|
|
class SheetLoadDataHashKey;
|
|
|
|
namespace css {
|
|
class SheetLoadData;
|
|
class Loader;
|
|
} // namespace css
|
|
|
|
struct SharedStyleSheetCacheTraits {
|
|
using Loader = css::Loader;
|
|
using Key = SheetLoadDataHashKey;
|
|
using Value = StyleSheet;
|
|
using LoadingValue = css::SheetLoadData;
|
|
|
|
static SheetLoadDataHashKey KeyFromLoadingValue(const LoadingValue& aValue) {
|
|
return SheetLoadDataHashKey(aValue);
|
|
}
|
|
};
|
|
|
|
class SharedStyleSheetCache final
|
|
: public SharedSubResourceCache<SharedStyleSheetCacheTraits,
|
|
SharedStyleSheetCache>,
|
|
public nsIMemoryReporter,
|
|
public nsIObserver {
|
|
public:
|
|
using Base = SharedSubResourceCache<SharedStyleSheetCacheTraits,
|
|
SharedStyleSheetCache>;
|
|
|
|
NS_DECL_ISUPPORTS
|
|
NS_DECL_NSIMEMORYREPORTER
|
|
|
|
SharedStyleSheetCache();
|
|
void Init();
|
|
|
|
NS_IMETHOD Observe(nsISupports* aSubject, const char* aTopic,
|
|
const char16_t* aData) override {
|
|
return Base::DoObserve(aSubject, aTopic, aData);
|
|
}
|
|
|
|
// This has to be static because it's also called for loaders that don't have
|
|
// a sheet cache (loaders that are not owned by a document).
|
|
static void LoadCompleted(SharedStyleSheetCache*, css::SheetLoadData&,
|
|
nsresult);
|
|
using Base::LoadCompleted;
|
|
static void LoadCompletedInternal(SharedStyleSheetCache*, css::SheetLoadData&,
|
|
nsTArray<RefPtr<css::SheetLoadData>>&);
|
|
static void Clear(const Maybe<bool>& aChrome = Nothing(),
|
|
const Maybe<nsCOMPtr<nsIPrincipal>>& aPrincipal = Nothing(),
|
|
const Maybe<nsCString>& aSchemelessSite = Nothing(),
|
|
const Maybe<OriginAttributesPattern>& aPattern = Nothing(),
|
|
const Maybe<nsCString>& aURL = Nothing());
|
|
|
|
void EvictPrincipal(nsIPrincipal* aPrincipal) {
|
|
Base::EvictPrincipal(aPrincipal);
|
|
mInlineSheets.Remove(aPrincipal);
|
|
}
|
|
|
|
void ClearInProcess(const Maybe<bool>& aChrome,
|
|
const Maybe<nsCOMPtr<nsIPrincipal>>& aPrincipal,
|
|
const Maybe<nsCString>& aSchemelessSite,
|
|
const Maybe<OriginAttributesPattern>& aPattern,
|
|
const Maybe<nsCString>& aURL);
|
|
|
|
size_t SizeOfIncludingThis(MallocSizeOf) const;
|
|
|
|
auto LookupInline(nsIPrincipal* aPrincipal, const nsAString& aBuffer) {
|
|
auto& principalMap = mInlineSheets.LookupOrInsert(aPrincipal);
|
|
return principalMap.Lookup(aBuffer);
|
|
}
|
|
|
|
struct InlineSheetEntry {
|
|
RefPtr<StyleSheet> mSheet;
|
|
bool mWasLoadedAsImage = false;
|
|
};
|
|
using InlineSheetCandidates = nsTArray<InlineSheetEntry>;
|
|
|
|
void InsertInline(nsIPrincipal* aPrincipal, const nsAString& aBuffer,
|
|
InlineSheetEntry&& aEntry) {
|
|
// TODO(emilio): Maybe a better eviction policy for inline sheets, or an
|
|
// expiration tracker or so?
|
|
auto& principalMap = mInlineSheets.LookupOrInsert(aPrincipal);
|
|
principalMap
|
|
.LookupOrInsertWith(aBuffer, [] { return InlineSheetCandidates(); })
|
|
.AppendElement(std::move(aEntry));
|
|
}
|
|
|
|
protected:
|
|
void InsertIfNeeded(css::SheetLoadData&);
|
|
nsTHashMap<PrincipalHashKey,
|
|
nsTHashMap<nsStringHashKey, InlineSheetCandidates>>
|
|
mInlineSheets;
|
|
|
|
bool ShouldIgnoreMemoryPressure() override { return false; }
|
|
|
|
~SharedStyleSheetCache();
|
|
};
|
|
|
|
} // namespace mozilla
|
|
|
|
#endif
|