File: CallbackFunction.h

package info (click to toggle)
thunderbird 1:60.8.0-1~deb9u1
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 2,339,208 kB
  • sloc: cpp: 5,456,704; ansic: 2,360,384; python: 596,095; asm: 340,963; java: 326,291; xml: 258,664; sh: 84,366; makefile: 23,702; perl: 17,317; objc: 3,768; yacc: 1,766; ada: 1,681; lex: 1,364; pascal: 1,264; cs: 879; exp: 527; php: 436; lisp: 258; ruby: 153; awk: 152; sed: 53; csh: 27
file content (62 lines) | stat: -rw-r--r-- 2,261 bytes parent folder | download | duplicates (7)
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
54
55
56
57
58
59
60
61
62
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

/**
 * A common base class for representing WebIDL callback function types in C++.
 *
 * This class implements common functionality like lifetime
 * management, initialization with the callable, and setup of the call
 * environment.  Subclasses corresponding to particular callback
 * function types should provide a Call() method that actually does
 * the call.
 */

#ifndef mozilla_dom_CallbackFunction_h
#define mozilla_dom_CallbackFunction_h

#include "mozilla/dom/CallbackObject.h"

namespace mozilla {
namespace dom {

class CallbackFunction : public CallbackObject {
 public:
  // See CallbackObject for an explanation of the arguments.
  explicit CallbackFunction(JSContext* aCx, JS::Handle<JSObject*> aCallable,
                            nsIGlobalObject* aIncumbentGlobal)
      : CallbackObject(aCx, aCallable, aIncumbentGlobal) {}

  // See CallbackObject for an explanation of the arguments.
  explicit CallbackFunction(JS::Handle<JSObject*> aCallable,
                            JS::Handle<JSObject*> aAsyncStack,
                            nsIGlobalObject* aIncumbentGlobal)
      : CallbackObject(aCallable, aAsyncStack, aIncumbentGlobal) {}

  JS::Handle<JSObject*> CallableOrNull() const { return CallbackOrNull(); }

  JS::Handle<JSObject*> CallablePreserveColor() const {
    return CallbackPreserveColor();
  }

  bool HasGrayCallable() const {
    // Play it safe in case this gets called after unlink.
    return mCallback && JS::ObjectIsMarkedGray(mCallback);
  }

 protected:
  explicit CallbackFunction(CallbackFunction* aCallbackFunction)
      : CallbackObject(aCallbackFunction) {}

  // See CallbackObject for an explanation of the arguments.
  CallbackFunction(JS::Handle<JSObject*> aCallable,
                   const FastCallbackConstructor&)
      : CallbackObject(aCallable, FastCallbackConstructor()) {}
};

}  // namespace dom
}  // namespace mozilla

#endif  // mozilla_dom_CallbackFunction_h