content/browser/renderer_host/input/tap_suppression_controller_client.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_BROWSER_RENDERER_HOST_INPUT_TAP_SUPPRESSION_CONTROLLER_CLIENT_H_
   6 #define CONTENT_BROWSER_RENDERER_HOST_INPUT_TAP_SUPPRESSION_CONTROLLER_CLIENT_H_
   7
   8 namespace content {
   9
  10 // This class provides an interface for callbacks made by
  11 // TapSuppressionController.
  12 class TapSuppressionControllerClient {
  13  public:
  14   virtual ~TapSuppressionControllerClient() {}
  15
  16   // Derived classes should implement this function to return the maximum time
  17   // they allow between a GestureFlingCancel and its corresponding tap down.
  18   virtual int MaxCancelToDownTimeInMs() = 0;
  19
  20   // Derived classes should implement this function to return the maximum time
  21   // they allow between a single tap's down and up events.
  22   virtual int MaxTapGapTimeInMs() = 0;
  23
  24   // Called whenever the deferred tap down (if saved) should be dropped totally.
  25   virtual void DropStashedTapDown() = 0;
  26
  27   // Called whenever the deferred tap down (if saved) should be forwarded to the
  28   // renderer. The tap down should go back to normal path it was
  29   // on before being deferred.
  30   virtual void ForwardStashedTapDown() = 0;
  31
  32  protected:
  33   TapSuppressionControllerClient() {}
  34
  35  private:
  36   DISALLOW_COPY_AND_ASSIGN(TapSuppressionControllerClient);
  37 };
  38
  39 }  // namespace content
  40
  41 #endif  // CONTENT_BROWSER_RENDERER_HOST_INPUT_TAP_SUPPRESSION_CONTROLLER_CLIENT_H_