Index: third_party/WebKit/Source/platform/scroll/SmoothScrollSequencer.h |
diff --git a/third_party/WebKit/Source/platform/scroll/SmoothScrollSequencer.h b/third_party/WebKit/Source/platform/scroll/SmoothScrollSequencer.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..dcaabf346f463cf989a6aa90849849ffb12d7920 |
--- /dev/null |
+++ b/third_party/WebKit/Source/platform/scroll/SmoothScrollSequencer.h |
@@ -0,0 +1,46 @@ |
+// Copyright (c) 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 SmoothScrollSequencer_h |
+#define SmoothScrollSequencer_h |
+ |
+#include <utility> |
+#include <vector> |
+#include "platform/scroll/ProgrammaticScrollAnimatorClient.h" |
+#include "platform/scroll/ScrollTypes.h" |
+ |
+namespace blink { |
+ |
+class ScrollableArea; |
+ |
+class PLATFORM_EXPORT SmoothScrollSequencer |
bokan
2017/04/07 15:56:52
Please add a class-level comment about what this c
sunyunjia
2017/05/12 18:40:25
Done.
|
+ : public ProgrammaticScrollAnimatorClient { |
+ public: |
+ static SmoothScrollSequencer* create(); |
+ |
+ ~SmoothScrollSequencer(); |
+ |
+ // Add a scroll offset animation to the back of a queue. |
+ void queueAnimation(ScrollableArea*, ScrollOffset); |
+ |
+ // Run the animation at the back of the queue and sets itself as a client |
+ // of ProgrammaticScrollAnimator to receive finish notification. |
+ void runQueuedAnimations(); |
+ |
+ // Pop the back of the queue and run the next animation in the queue. |
+ void notifyAnimationFinished(); |
+ |
+ // Abort the currently running anmation and all the animations in the queue. |
+ void abortAnimations(); |
+ |
+ protected: |
+ explicit SmoothScrollSequencer(); |
bokan
2017/04/07 15:56:52
There's no argument here so there's no implicit co
sunyunjia
2017/05/12 18:40:25
Done.
|
+ |
+ private: |
+ typedef std::pair<Member<ScrollableArea>, ScrollOffset> ScrollerAndOffsetPair; |
+ std::vector<ScrollerAndOffsetPair> m_queue; |
+}; |
+ |
+} // namespace blink |
+ |
+#endif // SmoothScrollSequencer_h |