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102 lines
3.7 KiB
JavaScript
102 lines
3.7 KiB
JavaScript
/* ***** 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 Google Safe Browsing.
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*
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* The Initial Developer of the Original Code is Google Inc.
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* Portions created by the Initial Developer are Copyright (C) 2006
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Aaron Boodman <aa@google.com> (original author)
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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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// Firefox-specific additions to lib/js/lang.js.
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/**
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* The always-useful alert.
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*/
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function alert(msg, opt_title) {
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opt_title |= "message";
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Cc["@mozilla.org/embedcomp/prompt-service;1"]
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.getService(Ci.nsIPromptService)
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.alert(null, opt_title, msg.toString());
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}
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/**
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* The instanceof operator cannot be used on a pure js object to determine if
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* it implements a certain xpcom interface. The QueryInterface method can, but
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* it throws an error which makes things more complex.
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*/
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function jsInstanceOf(obj, iid) {
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try {
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obj.QueryInterface(iid);
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return true;
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} catch (e) {
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if (e == Components.results.NS_ERROR_NO_INTERFACE) {
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return false;
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} else {
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throw e;
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}
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}
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}
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/**
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* Unbelievably, Function inheritence is broken in chrome in Firefox
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* (still as of FFox 1.5b1). Hence if you're working in an extension
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* and not using the subscriptloader, you can't use the method
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* above. Instead, use this global function that does roughly the same
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* thing.
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*
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***************************************************************************
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* NOTE THE REVERSED ORDER OF FUNCTION AND OBJECT REFERENCES AS bind() *
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***************************************************************************
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*
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* // Example to bind foo.bar():
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* var bound = BindToObject(bar, foo, "arg1", "arg2");
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* bound("arg3", "arg4");
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*
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* @param func {string} Reference to the function to be bound
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*
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* @param obj {object} Specifies the object which |this| should point to
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* when the function is run. If the value is null or undefined, it will default
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* to the global object.
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*
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* @param opt_{...} Dummy optional arguments to make a jscompiler happy
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*
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* @returns {function} A partially-applied form of the speficied function.
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*/
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function BindToObject(func, obj, opt_A, opt_B, opt_C, opt_D, opt_E, opt_F) {
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// This is the sick product of Aaron's mind. Not for the feint of heart.
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var args = Array.prototype.splice.call(arguments, 1, arguments.length);
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return Function.prototype.bind.apply(func, args);
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}
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