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- /* ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is XPConnect Native Wrapper.
- *
- * The Initial Developer of the Original Code is
- * Christopher A. Aillon <christopher@aillon.com>.
- * Portions created by the Initial Developer are Copyright (C) 2002
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- * Christopher A. Aillon <christopher@aillon.com>
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either the GNU General Public License Version 2 or later (the "GPL"), or
- * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
-
- /**
- * Get a wrapper to certain XPConnect wrapped native properties of an
- * untrusted object.
- *
- * Usage:
- * var wrapper = new XPCNativeWrapper(untrusted, 'title', 'getElementById()');
- * var title = wrapper.title;
- * var elem = wrapper.getElementById('fooId');
- *
- * @param aUntrustedObject the untrusted object we want native wrappers for
- * @param arg1...argN strings of the form 'property' or 'method()' which
- * denote the property or method names we wish to wrap
- * @throws NS_ERROR_XPC_BAD_CONVERT_JS if a property or method requested
- * does not have a native wrapper on
- * the untrusted object.
- * @see nsXPCComponents::LookupMethod()
- */
- function XPCNativeWrapper(aUntrustedObject)
- {
- this.mUntrustedObject = aUntrustedObject;
-
- for (var i = arguments.length - 1; i > 0; --i)
- this.importXPCNative(arguments[i]);
- }
-
- XPCNativeWrapper.prototype =
- {
- importXPCNative:
- function(aName)
- {
- // If we are passed a string like "foo()", ary[2] will be of type string,
- // and contain "()". If passed "foo", then it will be of type undefined.
- if (aName.slice(-2) == "()")
- this._doImportMethod(aName.slice(0, -2));
- else
- this._doImportProperty(aName);
- },
-
- _doImportMethod:
- function(aMethodName)
- {
- var nativeMethod = Components.lookupMethod(this.mUntrustedObject,
- aMethodName);
- this[aMethodName] = function()
- {
- return nativeMethod.apply(this.mUntrustedObject, arguments);
- };
- },
-
- _doImportProperty:
- function(aPropName)
- {
- var nativeMethod = Components.lookupMethod(this.mUntrustedObject,
- aPropName);
- var theGetter = function()
- {
- return nativeMethod.call(this.mUntrustedObject);
- };
- var theSetter = function(val)
- {
- return nativeMethod.call(this.mUntrustedObject, val);
- };
-
- this.__defineGetter__(aPropName, theGetter);
- this.__defineSetter__(aPropName, theSetter);
- }
- };
-