dom/bindings/CallbackFunction.h@6474c204b198 (annotated)
dom/bindings/CallbackFunction.h
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* vim:set ts=2 sw=2 sts=2 et cindent: */ |
| michael@0 | 3 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 4 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 5 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 6 | |
| michael@0 | 7 | /** |
| michael@0 | 8 | * A common base class for representing WebIDL callback function types in C++. |
| michael@0 | 9 | * |
| michael@0 | 10 | * This class implements common functionality like lifetime |
| michael@0 | 11 | * management, initialization with the callable, and setup of the call |
| michael@0 | 12 | * environment. Subclasses corresponding to particular callback |
| michael@0 | 13 | * function types should provide a Call() method that actually does |
| michael@0 | 14 | * the call. |
| michael@0 | 15 | */ |
| michael@0 | 16 | |
| michael@0 | 17 | #ifndef mozilla_dom_CallbackFunction_h |
| michael@0 | 18 | #define mozilla_dom_CallbackFunction_h |
| michael@0 | 19 | |
| michael@0 | 20 | #include "mozilla/dom/CallbackObject.h" |
| michael@0 | 21 | |
| michael@0 | 22 | namespace mozilla { |
| michael@0 | 23 | namespace dom { |
| michael@0 | 24 | |
| michael@0 | 25 | class CallbackFunction : public CallbackObject |
| michael@0 | 26 | { |
| michael@0 | 27 | public: |
| michael@0 | 28 | explicit CallbackFunction(JS::Handle<JSObject*> aCallable, |
| michael@0 | 29 | nsIGlobalObject* aIncumbentGlobal) |
| michael@0 | 30 | : CallbackObject(aCallable, aIncumbentGlobal) |
| michael@0 | 31 | { |
| michael@0 | 32 | } |
| michael@0 | 33 | |
| michael@0 | 34 | JS::Handle<JSObject*> Callable() const |
| michael@0 | 35 | { |
| michael@0 | 36 | return Callback(); |
| michael@0 | 37 | } |
| michael@0 | 38 | |
| michael@0 | 39 | bool HasGrayCallable() const |
| michael@0 | 40 | { |
| michael@0 | 41 | // Play it safe in case this gets called after unlink. |
| michael@0 | 42 | return mCallback && xpc_IsGrayGCThing(mCallback); |
| michael@0 | 43 | } |
| michael@0 | 44 | |
| michael@0 | 45 | protected: |
| michael@0 | 46 | explicit CallbackFunction(CallbackFunction* aCallbackFunction) |
| michael@0 | 47 | : CallbackObject(aCallbackFunction) |
| michael@0 | 48 | { |
| michael@0 | 49 | } |
| michael@0 | 50 | }; |
| michael@0 | 51 | |
| michael@0 | 52 | } // namespace dom |
| michael@0 | 53 | } // namespace mozilla |
| michael@0 | 54 | |
| michael@0 | 55 | #endif // mozilla_dom_CallbackFunction_h |
