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Unified Diff: Source/core/fetch/CachedMetadataHandler.h

Issue 929953002: CachedMetadata support for ServiceWorker script. (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master
Patch Set: incorporated tkent's comment Created 5 years, 10 months ago
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Index: Source/core/fetch/CachedMetadataHandler.h
diff --git a/Source/core/fetch/CachedMetadataHandler.h b/Source/core/fetch/CachedMetadataHandler.h
new file mode 100644
index 0000000000000000000000000000000000000000..96a5122065b4c19acb919c4c4070d119cd306f37
--- /dev/null
+++ b/Source/core/fetch/CachedMetadataHandler.h
@@ -0,0 +1,38 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CachedMetadataHandler_h
+#define CachedMetadataHandler_h
+
+#include "wtf/Forward.h"
+
+namespace blink {
+
+class CachedMetadata;
+
+// Handler class for caching operations.
+class CachedMetadataHandler {
+public:
+ enum CacheType {
+ SendToPlatform, // send cache data to blink::Platform::cacheMetadata
+ CacheLocally // cache only in Resource's member variables
+ };
+ virtual ~CachedMetadataHandler() { }
+ // Caches the given metadata in association with this resource and suggests
+ // that the platform persist it. The dataTypeID is a pseudo-randomly chosen
+ // identifier that is used to distinguish data generated by the caller.
+ virtual void setCachedMetadata(unsigned dataTypeID, const char*, size_t, CacheType = SendToPlatform) = 0;
+ // Reset existing metadata, to allow setting new data.
+ virtual void clearCachedMetadata(CacheType = CacheLocally) = 0;
+ // Returns cached metadata of the given type associated with this resource.
+ virtual CachedMetadata* cachedMetadata(unsigned dataTypeID) const = 0;
+ // Returns the encoding to which the cache is specific.
+ virtual String encoding() const = 0;
+
+protected:
+ CachedMetadataHandler() { }
+};
+}
+
+#endif // CachedMetadataHandler_h
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