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Unified Diff: Source/core/page/scrolling/ScrollStateCallback.h

Issue 1209183004: Expose scroll customization for touch to JS (behind REF). (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master
Patch Set: Address skobes' nits. Created 5 years, 5 months ago
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Index: Source/core/page/scrolling/ScrollStateCallback.h
diff --git a/Source/core/page/scrolling/ScrollStateCallback.h b/Source/core/page/scrolling/ScrollStateCallback.h
new file mode 100644
index 0000000000000000000000000000000000000000..dcfe3fd77070bfdc143521b608b00d0afeb5aa15
--- /dev/null
+++ b/Source/core/page/scrolling/ScrollStateCallback.h
@@ -0,0 +1,52 @@
+// 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 ScrollStateCallback_h
+#define ScrollStateCallback_h
+
+#include "platform/heap/Handle.h"
+
+namespace blink {
+
+class ScrollState;
+
+enum class NativeScrollBehavior {
+ DisableNativeScroll,
+ PerformBeforeNativeScroll,
+ PerformAfterNativeScroll,
+};
+
+class ScrollStateCallback : public GarbageCollectedFinalized<ScrollStateCallback> {
+public:
+ ScrollStateCallback()
+ : m_nativeScrollBehavior(NativeScrollBehavior::DisableNativeScroll)
+ {
+ }
+
+ virtual ~ScrollStateCallback()
+ {
+ }
+
+ DEFINE_INLINE_VIRTUAL_TRACE() {}
+ virtual void handleEvent(ScrollState*) = 0;
+
+ void setNativeScrollBehavior(NativeScrollBehavior nativeScrollBehavior)
+ {
+ m_nativeScrollBehavior = nativeScrollBehavior;
+ }
+
+ NativeScrollBehavior nativeScrollBehavior()
+ {
+ return m_nativeScrollBehavior;
+ }
+
+ static NativeScrollBehavior toNativeScrollBehavior(String nativeScrollBehavior);
+
+protected:
+ NativeScrollBehavior m_nativeScrollBehavior;
+};
+
+} // namespace blink
+
+#endif // ScrollStateCallback_h
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