File: input_event_stream_validator.cc

package info (click to toggle)
chromium 139.0.7258.127-1
  • links: PTS, VCS
  • area: main
  • in suites:
  • size: 6,122,068 kB
  • sloc: cpp: 35,100,771; ansic: 7,163,530; javascript: 4,103,002; python: 1,436,920; asm: 946,517; xml: 746,709; pascal: 187,653; perl: 88,691; sh: 88,436; objc: 79,953; sql: 51,488; cs: 44,583; fortran: 24,137; makefile: 22,147; tcl: 15,277; php: 13,980; yacc: 8,984; ruby: 7,485; awk: 3,720; lisp: 3,096; lex: 1,327; ada: 727; jsp: 228; sed: 36
file content (53 lines) | stat: -rw-r--r-- 1,777 bytes parent folder | download | duplicates (9)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "components/input/input_event_stream_validator.h"

#include "base/check.h"
#include "base/command_line.h"
#include "third_party/blink/public/common/input/web_gesture_event.h"
#include "third_party/blink/public/common/input/web_input_event.h"
#include "ui/events/blink/web_input_event_traits.h"
#include "components/input/switches.h"

using blink::WebInputEvent;
using blink::WebGestureEvent;
using blink::WebTouchEvent;

namespace input {

InputEventStreamValidator::InputEventStreamValidator()
    : enabled_(base::CommandLine::ForCurrentProcess()->HasSwitch(
          switches::kValidateInputEventStream)) {
}

InputEventStreamValidator::~InputEventStreamValidator() {
}

void InputEventStreamValidator::Validate(const WebInputEvent& event) {
  if (!enabled_)
    return;

  DCHECK(ValidateImpl(event, &error_msg_))
      << error_msg_
      << "\nInvalid Event: " << ui::WebInputEventTraits::ToString(event);
}

bool InputEventStreamValidator::ValidateImpl(
    const blink::WebInputEvent& event,
    std::string* error_msg) {
  DCHECK(error_msg);
  if (WebInputEvent::IsGestureEventType(event.GetType())) {
    const WebGestureEvent& gesture = static_cast<const WebGestureEvent&>(event);
    // TODO(jdduke): Validate touchpad gesture streams.
    if (gesture.SourceDevice() == blink::WebGestureDevice::kTouchscreen)
      return gesture_validator_.Validate(gesture, error_msg);
  } else if (WebInputEvent::IsTouchEventType(event.GetType())) {
    const WebTouchEvent& touch = static_cast<const WebTouchEvent&>(event);
    return touch_validator_.Validate(touch, error_msg);
  }
  return true;
}

}  // namespace input