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-rw-r--r--dom/animation/PseudoElementHashEntry.h58
1 files changed, 58 insertions, 0 deletions
diff --git a/dom/animation/PseudoElementHashEntry.h b/dom/animation/PseudoElementHashEntry.h
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+/* -*- 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_PseudoElementHashEntry_h
+#define mozilla_PseudoElementHashEntry_h
+
+#include "mozilla/dom/Element.h"
+#include "mozilla/AnimationTarget.h"
+#include "mozilla/HashFunctions.h"
+#include "PLDHashTable.h"
+
+namespace mozilla {
+
+// A hash entry that uses a RefPtr<dom::Element>, CSSPseudoElementType pair
+class PseudoElementHashEntry : public PLDHashEntryHdr
+{
+public:
+ typedef NonOwningAnimationTarget KeyType;
+ typedef const NonOwningAnimationTarget* KeyTypePointer;
+
+ explicit PseudoElementHashEntry(KeyTypePointer aKey)
+ : mElement(aKey->mElement)
+ , mPseudoType(aKey->mPseudoType) { }
+ explicit PseudoElementHashEntry(const PseudoElementHashEntry& aCopy)=default;
+
+ ~PseudoElementHashEntry() = default;
+
+ KeyType GetKey() const { return { mElement, mPseudoType }; }
+ bool KeyEquals(KeyTypePointer aKey) const
+ {
+ return mElement == aKey->mElement &&
+ mPseudoType == aKey->mPseudoType;
+ }
+
+ static KeyTypePointer KeyToPointer(KeyType& aKey) { return &aKey; }
+ static PLDHashNumber HashKey(KeyTypePointer aKey)
+ {
+ if (!aKey)
+ return 0;
+
+ // Convert the scoped enum into an integer while adding it to hash.
+ // Note: CSSPseudoElementTypeBase is uint8_t, so we convert it into
+ // uint8_t directly to avoid including the header.
+ return mozilla::HashGeneric(aKey->mElement,
+ static_cast<uint8_t>(aKey->mPseudoType));
+ }
+ enum { ALLOW_MEMMOVE = true };
+
+ RefPtr<dom::Element> mElement;
+ CSSPseudoElementType mPseudoType;
+};
+
+} // namespace mozilla
+
+#endif // mozilla_PseudoElementHashEntry_h