| // Copyright 2017 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 ResourceFinishObserver_h |
| #define ResourceFinishObserver_h |
| |
| #include "platform/PlatformExport.h" |
| #include "platform/heap/Handle.h" |
| #include "platform/wtf/text/WTFString.h" |
| |
| namespace blink { |
| |
| // ResourceFinishObserver is different from ResourceClient in several ways. |
| // - NotifyFinished is dispatched asynchronously. |
| // - ResourceFinishObservers will be removed from Resource when the load |
| // finishes. - This class is not intended to be "subclassed" per each Resource |
| // subclass. |
| // There is no ImageResourceFinishObserver, for example. |
| // ResourceFinishObserver should be quite simple. All notifications must be |
| // notified AFTER the loading finishes. |
| class PLATFORM_EXPORT ResourceFinishObserver : public GarbageCollectedMixin { |
| public: |
| virtual ~ResourceFinishObserver() = default; |
| |
| // Called asynchronously when loading finishes. |
| // Note that this can be dispatched after removing |this| client from a |
| // Resource, because of the asynchronicity. |
| virtual void NotifyFinished() = 0; |
| // Name for debugging |
| virtual String DebugName() const = 0; |
| |
| DEFINE_INLINE_VIRTUAL_TRACE() {} |
| }; |
| |
| } // namespace blink |
| |
| #endif // ResourceFinishObserver_h |
