ui/views/repeat_controller.cc

   1 // Copyright (c) 2011 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 #include "ui/views/repeat_controller.h"
   6
   7 using base::TimeDelta;
   8
   9 namespace views {
  10
  11 // The delay before the first and then subsequent repeats. Values taken from
  12 // XUL code: http://mxr.mozilla.org/seamonkey/source/layout/xul/base/src/nsRepeatService.cpp#52
  13 const int kInitialRepeatDelay = 250;
  14 const int kRepeatDelay = 50;
  15
  16 ///////////////////////////////////////////////////////////////////////////////
  17 // RepeatController, public:
  18
  19 RepeatController::RepeatController(const base::Closure& callback)
  20     : callback_(callback) {
  21 }
  22
  23 RepeatController::~RepeatController() {
  24 }
  25
  26 void RepeatController::Start() {
  27   // The first timer is slightly longer than subsequent repeats.
  28   timer_.Start(FROM_HERE, TimeDelta::FromMilliseconds(kInitialRepeatDelay),
  29                this, &RepeatController::Run);
  30 }
  31
  32 void RepeatController::Stop() {
  33   timer_.Stop();
  34 }
  35
  36 ///////////////////////////////////////////////////////////////////////////////
  37 // RepeatController, private:
  38
  39 void RepeatController::Run() {
  40   timer_.Start(FROM_HERE, TimeDelta::FromMilliseconds(kRepeatDelay), this,
  41                &RepeatController::Run);
  42   callback_.Run();
  43 }
  44
  45 }  // namespace views