1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /* ***** BEGIN LICENSE BLOCK *****
3 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 : *
5 : * The contents of this file are subject to the Mozilla Public License Version
6 : * 1.1 (the "License"); you may not use this file except in compliance with
7 : * the License. You may obtain a copy of the License at
8 : * http://www.mozilla.org/MPL/
9 : *
10 : * Software distributed under the License is distributed on an "AS IS" basis,
11 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 : * for the specific language governing rights and limitations under the
13 : * License.
14 : *
15 : * The Original Code is Mozilla code.
16 : *
17 : * The Initial Developer of the Original Code is Alex Fritze.
18 : * Portions created by the Initial Developer are Copyright (C) 2004
19 : * the Initial Developer. All Rights Reserved.
20 : *
21 : * Contributor(s):
22 : * Alex Fritze <alex@croczilla.com> (original author)
23 : *
24 : * Alternatively, the contents of this file may be used under the terms of
25 : * either the GNU General Public License Version 2 or later (the "GPL"), or
26 : * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
27 : * in which case the provisions of the GPL or the LGPL are applicable instead
28 : * of those above. If you wish to allow use of your version of this file only
29 : * under the terms of either the GPL or the LGPL, and not to allow others to
30 : * use your version of this file under the terms of the MPL, indicate your
31 : * decision by deleting the provisions above and replace them with the notice
32 : * and other provisions required by the GPL or the LGPL. If you do not delete
33 : * the provisions above, a recipient may use your version of this file under
34 : * the terms of any one of the MPL, the GPL or the LGPL.
35 : *
36 : * ***** END LICENSE BLOCK ***** */
37 :
38 : #include "xpcprivate.h"
39 : #include "XPCJSWeakReference.h"
40 :
41 3505 : xpcJSWeakReference::xpcJSWeakReference()
42 : {
43 3505 : }
44 :
45 57607 : NS_IMPL_ISUPPORTS1(xpcJSWeakReference, xpcIJSWeakReference)
46 :
47 3505 : nsresult xpcJSWeakReference::Init(JSContext* cx, const JS::Value& object)
48 : {
49 7010 : JSAutoRequest ar(cx);
50 :
51 3505 : if (!object.isObject())
52 1 : return NS_OK;
53 :
54 3504 : JSObject& obj = object.toObject();
55 :
56 7008 : XPCCallContext ccx(NATIVE_CALLER, cx);
57 :
58 7008 : nsRefPtr<nsXPCWrappedJS> wrapped;
59 : nsresult rv = nsXPCWrappedJS::GetNewOrUsed(ccx,
60 : &obj,
61 : NS_GET_IID(nsISupports),
62 : nsnull,
63 3504 : getter_AddRefs(wrapped));
64 3504 : if (!wrapped) {
65 0 : NS_ERROR("can't get nsISupportsWeakReference wrapper for obj");
66 0 : return rv;
67 : }
68 :
69 3504 : return wrapped->GetWeakReference(getter_AddRefs(mWrappedJSObject));
70 : }
71 :
72 : NS_IMETHODIMP
73 1851 : xpcJSWeakReference::Get(JSContext* aCx, JS::Value* aRetval)
74 : {
75 1851 : *aRetval = JSVAL_NULL;
76 :
77 1851 : if (!mWrappedJSObject) {
78 1 : return NS_OK;
79 : }
80 :
81 3700 : nsCOMPtr<nsIXPConnectWrappedJS> wrappedObj = do_QueryReferent(mWrappedJSObject);
82 1850 : if (!wrappedObj) {
83 214 : return NS_OK;
84 : }
85 :
86 : JSObject *obj;
87 1636 : wrappedObj->GetJSObject(&obj);
88 1636 : if (!obj) {
89 0 : return NS_OK;
90 : }
91 :
92 : // Most users of XPCWrappedJS don't need to worry about
93 : // re-wrapping because things are implicitly rewrapped by
94 : // xpcconvert. However, because we're doing this directly
95 : // through the native call context, we need to call
96 : // JS_WrapObject().
97 1636 : if (!JS_WrapObject(aCx, &obj)) {
98 0 : return NS_ERROR_FAILURE;
99 : }
100 :
101 1636 : *aRetval = OBJECT_TO_JSVAL(obj);
102 1636 : return NS_OK;
103 : }
|