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150 lines
4.5 KiB
C
150 lines
4.5 KiB
C
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Gecko DOM code.
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*
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* The Initial Developer of the Original Code is
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* Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2008
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Peter Van der Beken <peterv@propagandism.org>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsWrapperCacheInline_h___
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#define nsWrapperCacheInline_h___
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#include "nsWrapperCache.h"
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#include "xpcpublic.h"
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inline JSObject*
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nsWrapperCache::GetWrapperPreserveColor() const
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{
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JSObject *obj = GetJSObjectFromBits();
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return !IsProxy() || !obj || js::IsProxy(obj) ? obj : nsnull;
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}
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inline JSObject*
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nsWrapperCache::GetWrapper() const
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{
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JSObject* obj = GetWrapperPreserveColor();
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xpc_UnmarkGrayObject(obj);
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return obj;
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}
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inline void
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nsWrapperCache::SetWrapper(JSObject* aWrapper)
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{
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NS_ASSERTION(!PreservingWrapper(), "Clearing a preserved wrapper!");
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NS_ASSERTION(aWrapper, "Use ClearWrapper!");
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JSObject *obj = GetJSObjectFromBits();
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if (obj && mozilla::dom::binding::isExpandoObject(obj)) {
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NS_ASSERTION(mozilla::dom::binding::instanceIsProxy(aWrapper),
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"We have an expando but this isn't a DOM proxy?");
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js::SetProxyExtra(aWrapper, mozilla::dom::binding::JSPROXYSLOT_EXPANDO,
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js::ObjectValue(*obj));
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}
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SetWrapperBits(aWrapper);
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}
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inline JSObject*
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nsWrapperCache::GetExpandoObjectPreserveColor() const
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{
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JSObject *obj = GetJSObjectFromBits();
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if (!obj) {
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return NULL;
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}
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if (!IsProxy()) {
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// If we support non-proxy dom binding objects then this should be:
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//return mozilla::dom::binding::isExpandoObject(obj) ? obj : js::GetSlot(obj, EXPANDO_SLOT);
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return NULL;
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}
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// FIXME unmark gray?
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if (mozilla::dom::binding::instanceIsProxy(obj)) {
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return GetExpandoFromSlot(obj);
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}
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return mozilla::dom::binding::isExpandoObject(obj) ? obj : NULL;
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}
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inline JSObject*
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nsWrapperCache::GetExpandoFromSlot(JSObject *obj)
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{
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NS_ASSERTION(mozilla::dom::binding::instanceIsProxy(obj),
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"Asking for an expando but this isn't a DOM proxy?");
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const js::Value &v = js::GetProxyExtra(obj, mozilla::dom::binding::JSPROXYSLOT_EXPANDO);
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return v.isUndefined() ? NULL : v.toObjectOrNull();
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}
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inline void
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nsWrapperCache::ClearWrapper()
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{
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NS_ASSERTION(!PreservingWrapper(), "Clearing a preserved wrapper!");
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JSObject *obj = GetJSObjectFromBits();
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if (!obj) {
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return;
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}
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JSObject *expando;
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if (mozilla::dom::binding::instanceIsProxy(obj)) {
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expando = GetExpandoFromSlot(obj);
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}
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else {
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// If we support non-proxy dom binding objects then this should be:
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//expando = js::GetSlot(obj, EXPANDO_SLOT);
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expando = NULL;
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}
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SetWrapperBits(expando);
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}
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inline void
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nsWrapperCache::ClearWrapperIfProxy()
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{
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if (!IsProxy()) {
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return;
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}
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RemoveExpandoObject();
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SetWrapperBits(NULL);
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}
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inline bool
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nsWrapperCache::IsBlack()
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{
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JSObject* o = GetWrapperPreserveColor();
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return o && !xpc_IsGrayGCThing(o);
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}
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#endif /* nsWrapperCache_h___ */
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