зеркало из https://github.com/mozilla/pjs.git
126 строки
4.7 KiB
C++
126 строки
4.7 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* vim: set ts=4 sw=4 et tw=99 ft=cpp:
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*
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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 mozilla.org code, released
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* June 24, 2010.
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*
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* The Initial Developer of the Original Code is
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* The Mozilla Foundation
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*
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* Contributor(s):
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* Andreas Gal <gal@mozilla.com>
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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 of the GNU General Public License Version 2 or later (the "GPL"),
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* or 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 _xpc_WRAPPERFACTORY_H
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#define _xpc_WRAPPERFACTORY_H
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#include "jsapi.h"
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#include "jswrapper.h"
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namespace xpc {
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class WrapperFactory {
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public:
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enum { WAIVE_XRAY_WRAPPER_FLAG = js::Wrapper::LAST_USED_FLAG << 1,
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IS_XRAY_WRAPPER_FLAG = WAIVE_XRAY_WRAPPER_FLAG << 1,
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SCRIPT_ACCESS_ONLY_FLAG = IS_XRAY_WRAPPER_FLAG << 1,
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PARTIALLY_TRANSPARENT = SCRIPT_ACCESS_ONLY_FLAG << 1,
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SOW_FLAG = PARTIALLY_TRANSPARENT << 1,
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// Prevent scripts from shadowing native properties.
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// NB: Applies only to Xray wrappers.
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// NB: This will prevent scriptable helpers from defining special
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// handlers for properties defined in IDL. Use with caution.
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SHADOWING_FORBIDDEN = SOW_FLAG << 1 };
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// Return true if any of any of the nested wrappers have the flag set.
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static bool HasWrapperFlag(JSObject *wrapper, unsigned flag) {
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unsigned flags = 0;
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js::UnwrapObject(wrapper, true, &flags);
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return !!(flags & flag);
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}
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static bool IsXrayWrapper(JSObject *wrapper) {
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return HasWrapperFlag(wrapper, IS_XRAY_WRAPPER_FLAG);
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}
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static bool IsPartiallyTransparent(JSObject *wrapper) {
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return HasWrapperFlag(wrapper, PARTIALLY_TRANSPARENT);
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}
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static bool HasWaiveXrayFlag(JSObject *wrapper) {
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return HasWrapperFlag(wrapper, WAIVE_XRAY_WRAPPER_FLAG);
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}
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static bool IsShadowingForbidden(JSObject *wrapper) {
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return HasWrapperFlag(wrapper, SHADOWING_FORBIDDEN);
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}
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static JSObject *WaiveXray(JSContext *cx, JSObject *obj);
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static JSObject *DoubleWrap(JSContext *cx, JSObject *obj, unsigned flags);
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// Prepare a given object for wrapping in a new compartment.
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static JSObject *PrepareForWrapping(JSContext *cx,
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JSObject *scope,
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JSObject *obj,
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unsigned flags);
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// Rewrap an object that is about to cross compartment boundaries.
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static JSObject *Rewrap(JSContext *cx,
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JSObject *obj,
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JSObject *wrappedProto,
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JSObject *parent,
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unsigned flags);
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// Return true if this is a location object.
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static bool IsLocationObject(JSObject *obj);
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// Wrap a location object.
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static JSObject *WrapLocationObject(JSContext *cx, JSObject *obj);
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// Wrap wrapped object into a waiver wrapper and then re-wrap it.
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static bool WaiveXrayAndWrap(JSContext *cx, jsval *vp);
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// Wrap a (same compartment) object in a SOW.
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static JSObject *WrapSOWObject(JSContext *cx, JSObject *obj);
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// Return true if this is a Components object.
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static bool IsComponentsObject(JSObject *obj);
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// Wrap a (same compartment) Components object.
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static JSObject *WrapComponentsObject(JSContext *cx, JSObject *obj);
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};
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extern js::Wrapper WaiveXrayWrapperWrapper;
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}
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#endif /* _xpc_WRAPPERFACTORY_H */
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