Index: cc/input/scroll_boundary_behavior.h |
diff --git a/cc/input/scroll_boundary_behavior.h b/cc/input/scroll_boundary_behavior.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..f3ffa8f1f334f87053c9a4eb6c6c7575676c57f3 |
--- /dev/null |
+++ b/cc/input/scroll_boundary_behavior.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 CC_INPUT_SCROLL_BOUNDARY_BEHAVIOR_H_ |
+#define CC_INPUT_SCROLL_BOUNDARY_BEHAVIOR_H_ |
+ |
+#include "cc/cc_export.h" |
+ |
+namespace cc { |
+ |
+struct CC_EXPORT ScrollBoundaryBehavior { |
+ enum ScrollBoundaryBehaviorType { |
+ // Allows the default behavior for the user agent. |
+ kScrollBoundaryBehaviorTypeAuto, |
+ // Hint to disable scroll chaining. The user agent may show an appropriate |
+ // overscroll affordance. |
+ kScrollBoundaryBehaviorTypeContain, |
+ // Same as contain but also hint that no overscroll affordance should be |
+ // triggered. |
+ kScrollBoundaryBehaviorTypeNone |
+ }; |
+ |
+ ScrollBoundaryBehavior() |
+ : x(kScrollBoundaryBehaviorTypeAuto), |
+ y(kScrollBoundaryBehaviorTypeAuto) {} |
+ explicit ScrollBoundaryBehavior(ScrollBoundaryBehaviorType type) |
+ : x(type), y(type) {} |
+ ScrollBoundaryBehavior(ScrollBoundaryBehaviorType x_type, |
+ ScrollBoundaryBehaviorType y_type) |
+ : x(x_type), y(y_type) {} |
+ |
+ ScrollBoundaryBehaviorType x; |
+ ScrollBoundaryBehaviorType y; |
+ |
+ bool operator==(const ScrollBoundaryBehavior& a) const { |
+ return (a.x == x) && (a.y == y); |
+ } |
+ bool operator!=(const ScrollBoundaryBehavior& a) const { |
+ return !(*this == a); |
+ } |
+}; |
+ |
+} // namespace cc |
+ |
+#endif // CC_INPUT_SCROLL_BOUNDARY_BEHAVIOR_H_ |