File: BoundaryEventDispatcher.h

package info (click to toggle)
chromium-browser 57.0.2987.98-1~deb8u1
  • links: PTS, VCS
  • area: main
  • in suites: jessie
  • size: 2,637,852 kB
  • ctags: 2,544,394
  • sloc: cpp: 12,815,961; ansic: 3,676,222; python: 1,147,112; asm: 526,608; java: 523,212; xml: 286,794; perl: 92,654; sh: 86,408; objc: 73,271; makefile: 27,698; cs: 18,487; yacc: 13,031; tcl: 12,957; pascal: 4,875; ml: 4,716; lex: 3,904; sql: 3,862; ruby: 1,982; lisp: 1,508; php: 1,368; exp: 404; awk: 325; csh: 117; jsp: 39; sed: 37
file content (39 lines) | stat: -rw-r--r-- 1,373 bytes parent folder | download 
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
 
// Copyright 2016 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 BoundaryEventDispatcher_h
#define BoundaryEventDispatcher_h

#include "core/events/EventTarget.h"

namespace blink {

// This class contains the common logic of finding related node in a boundary
// crossing action and sending boundary events. The subclasses of this class
// must define what events should be sent in every case.
class BoundaryEventDispatcher {
  STACK_ALLOCATED()
 public:
  BoundaryEventDispatcher() {}
  virtual ~BoundaryEventDispatcher() {}

  void sendBoundaryEvents(EventTarget* exitedTarget,
                          EventTarget* enteredTarget);

 protected:
  virtual void dispatchOut(EventTarget*, EventTarget* relatedTarget) = 0;
  virtual void dispatchOver(EventTarget*, EventTarget* relatedTarget) = 0;
  virtual void dispatchLeave(EventTarget*,
                             EventTarget* relatedTarget,
                             bool checkForListener) = 0;
  virtual void dispatchEnter(EventTarget*,
                             EventTarget* relatedTarget,
                             bool checkForListener) = 0;
  virtual AtomicString getLeaveEvent() = 0;
  virtual AtomicString getEnterEvent() = 0;
};

}  // namespace blink

#endif  // BoundaryEventDispatcher_h