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720 lines
20 KiB
JavaScript
720 lines
20 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 iq.js.
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*
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* The Initial Developer of the Original Code is the Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2010
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Ian Gilman <ian@iangilman.com>
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* Aza Raskin <aza@mozilla.com>
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* Michael Yoshitaka Erlewine <mitcho@mitcho.com>
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*
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* This file incorporates work from:
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* jQuery JavaScript Library v1.4.2: http://code.jquery.com/jquery-1.4.2.js
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* This incorporated work is covered by the following copyright and
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* permission notice:
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* Copyright 2010, John Resig
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* Dual licensed under the MIT or GPL Version 2 licenses.
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* http://jquery.org/license
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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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// **********
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// Title: iq.js
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// Various helper functions, in the vein of jQuery.
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// ----------
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// Function: iQ
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// Returns an iQClass object which represents an individual element or a group
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// of elements. It works pretty much like jQuery(), with a few exceptions,
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// most notably that you can't use strings with complex html,
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// just simple tags like '<div>'.
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function iQ(selector, context) {
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// The iQ object is actually just the init constructor 'enhanced'
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return new iQClass(selector, context);
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};
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// A simple way to check for HTML strings or ID strings
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// (both of which we optimize for)
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let quickExpr = /^[^<]*(<[\w\W]+>)[^>]*$|^#([\w-]+)$/;
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// Match a standalone tag
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let rsingleTag = /^<(\w+)\s*\/?>(?:<\/\1>)?$/;
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// ##########
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// Class: iQClass
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// The actual class of iQ result objects, representing an individual element
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// or a group of elements.
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//
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// ----------
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// Function: iQClass
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// You don't call this directly; this is what's called by iQ().
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function iQClass(selector, context) {
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// Handle $(""), $(null), or $(undefined)
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if (!selector) {
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return this;
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}
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// Handle $(DOMElement)
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if (selector.nodeType) {
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this.context = selector;
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this[0] = selector;
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this.length = 1;
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return this;
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}
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// The body element only exists once, optimize finding it
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if (selector === "body" && !context) {
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this.context = document;
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this[0] = document.body;
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this.selector = "body";
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this.length = 1;
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return this;
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}
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// Handle HTML strings
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if (typeof selector === "string") {
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// Are we dealing with HTML string or an ID?
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let match = quickExpr.exec(selector);
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// Verify a match, and that no context was specified for #id
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if (match && (match[1] || !context)) {
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// HANDLE $(html) -> $(array)
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if (match[1]) {
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let doc = (context ? context.ownerDocument || context : document);
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// If a single string is passed in and it's a single tag
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// just do a createElement and skip the rest
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let ret = rsingleTag.exec(selector);
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if (ret) {
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if (Utils.isPlainObject(context)) {
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Utils.assert(false, 'does not support HTML creation with context');
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} else {
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selector = [doc.createElement(ret[1])];
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}
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} else {
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Utils.assert(false, 'does not support complex HTML creation');
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}
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return Utils.merge(this, selector);
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// HANDLE $("#id")
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} else {
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let elem = document.getElementById(match[2]);
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if (elem) {
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this.length = 1;
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this[0] = elem;
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}
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this.context = document;
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this.selector = selector;
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return this;
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}
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// HANDLE $("TAG")
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} else if (!context && /^\w+$/.test(selector)) {
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this.selector = selector;
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this.context = document;
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selector = document.getElementsByTagName(selector);
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return Utils.merge(this, selector);
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// HANDLE $(expr, $(...))
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} else if (!context || context.iq) {
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return (context || iQ(document)).find(selector);
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// HANDLE $(expr, context)
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// (which is just equivalent to: $(context).find(expr)
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} else {
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return iQ(context).find(selector);
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}
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// HANDLE $(function)
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// Shortcut for document ready
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} else if (typeof selector == "function") {
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Utils.log('iQ does not support ready functions');
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return null;
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}
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if (typeof selector.selector !== "undefined") {
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this.selector = selector.selector;
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this.context = selector.context;
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}
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let ret = this || [];
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if (selector != null) {
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// The window, strings (and functions) also have 'length'
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if (selector.length == null || typeof selector == "string" || selector.setInterval) {
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Array.push(ret, selector);
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} else {
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Utils.merge(ret, selector);
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}
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}
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return ret;
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};
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iQClass.prototype = {
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// Start with an empty selector
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selector: "",
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// The default length of a iQ object is 0
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length: 0,
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// ----------
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// Function: each
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// Execute a callback for every element in the matched set.
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each: function iQClass_each(callback) {
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if (typeof callback != "function") {
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Utils.assert(false, "each's argument must be a function");
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return null;
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}
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for (let i = 0; this[i] != null; i++) {
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callback(this[i]);
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}
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return this;
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},
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// ----------
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// Function: addClass
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// Adds the given class(es) to the receiver.
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addClass: function iQClass_addClass(value) {
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Utils.assertThrow(typeof value == "string" && value,
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'requires a valid string argument');
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let length = this.length;
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for (let i = 0; i < length; i++) {
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let elem = this[i];
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if (elem.nodeType === 1) {
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value.split(/\s+/).forEach(function(className) {
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elem.classList.add(className);
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});
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}
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}
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return this;
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},
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// ----------
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// Function: removeClass
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// Removes the given class(es) from the receiver.
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removeClass: function iQClass_removeClass(value) {
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if (typeof value != "string" || !value) {
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Utils.assert(false, 'does not support function argument');
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return null;
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}
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let length = this.length;
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for (let i = 0; i < length; i++) {
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let elem = this[i];
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if (elem.nodeType === 1 && elem.className) {
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value.split(/\s+/).forEach(function(className) {
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elem.classList.remove(className);
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});
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}
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}
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return this;
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},
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// ----------
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// Function: hasClass
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// Returns true is the receiver has the given css class.
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hasClass: function iQClass_hasClass(singleClassName) {
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let length = this.length;
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for (let i = 0; i < length; i++) {
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if (this[i].classList.contains(singleClassName)) {
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return true;
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}
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}
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return false;
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},
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// ----------
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// Function: find
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// Searches the receiver and its children, returning a new iQ object with
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// elements that match the given selector.
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find: function iQClass_find(selector) {
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let ret = [];
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let length = 0;
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let l = this.length;
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for (let i = 0; i < l; i++) {
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length = ret.length;
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try {
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Utils.merge(ret, this[i].querySelectorAll(selector));
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} catch(e) {
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Utils.log('iQ.find error (bad selector)', e);
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}
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if (i > 0) {
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// Make sure that the results are unique
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for (let n = length; n < ret.length; n++) {
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for (let r = 0; r < length; r++) {
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if (ret[r] === ret[n]) {
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ret.splice(n--, 1);
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break;
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}
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}
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}
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}
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}
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return iQ(ret);
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},
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// ----------
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// Function: remove
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// Removes the receiver from the DOM.
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remove: function iQClass_remove() {
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for (let i = 0; this[i] != null; i++) {
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let elem = this[i];
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if (elem.parentNode) {
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elem.parentNode.removeChild(elem);
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}
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}
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return this;
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},
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// ----------
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// Function: empty
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// Removes all of the reciever's children and HTML content from the DOM.
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empty: function iQClass_empty() {
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for (let i = 0; this[i] != null; i++) {
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let elem = this[i];
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while (elem.firstChild) {
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elem.removeChild(elem.firstChild);
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}
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}
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return this;
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},
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// ----------
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// Function: width
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// Returns the width of the receiver.
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width: function iQClass_width() {
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let bounds = this.bounds();
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return bounds.width;
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},
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// ----------
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// Function: height
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// Returns the height of the receiver.
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height: function iQClass_height() {
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let bounds = this.bounds();
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return bounds.height;
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},
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// ----------
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// Function: position
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// Returns an object with the receiver's position in left and top
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// properties.
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position: function iQClass_position() {
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let bounds = this.bounds();
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return new Point(bounds.left, bounds.top);
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},
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// ----------
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// Function: bounds
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// Returns a <Rect> with the receiver's bounds.
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bounds: function iQClass_bounds() {
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Utils.assert(this.length == 1, 'does not yet support multi-objects (or null objects)');
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let rect = this[0].getBoundingClientRect();
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return new Rect(Math.floor(rect.left), Math.floor(rect.top),
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Math.floor(rect.width), Math.floor(rect.height));
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},
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// ----------
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// Function: data
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// Pass in both key and value to attach some data to the receiver;
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// pass in just key to retrieve it.
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data: function iQClass_data(key, value) {
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let data = null;
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if (typeof value === "undefined") {
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Utils.assert(this.length == 1, 'does not yet support multi-objects (or null objects)');
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data = this[0].iQData;
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if (data)
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return data[key];
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else
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return null;
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}
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for (let i = 0; this[i] != null; i++) {
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let elem = this[i];
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data = elem.iQData;
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if (!data)
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data = elem.iQData = {};
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data[key] = value;
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}
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return this;
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},
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// ----------
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// Function: html
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// Given a value, sets the receiver's innerHTML to it; otherwise returns
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// what's already there.
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html: function iQClass_html(value) {
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Utils.assert(this.length == 1, 'does not yet support multi-objects (or null objects)');
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if (typeof value === "undefined")
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return this[0].innerHTML;
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this[0].innerHTML = value;
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return this;
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},
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// ----------
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// Function: text
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// Given a value, sets the receiver's textContent to it; otherwise returns
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// what's already there.
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text: function iQClass_text(value) {
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Utils.assert(this.length == 1, 'does not yet support multi-objects (or null objects)');
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if (typeof value === "undefined") {
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return this[0].textContent;
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}
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return this.empty().append((this[0] && this[0].ownerDocument || document).createTextNode(value));
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},
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// ----------
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// Function: val
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// Given a value, sets the receiver's value to it; otherwise returns what's already there.
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val: function iQClass_val(value) {
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Utils.assert(this.length == 1, 'does not yet support multi-objects (or null objects)');
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if (typeof value === "undefined") {
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return this[0].value;
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}
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this[0].value = value;
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return this;
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},
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// ----------
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// Function: appendTo
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// Appends the receiver to the result of iQ(selector).
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appendTo: function iQClass_appendTo(selector) {
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Utils.assert(this.length == 1, 'does not yet support multi-objects (or null objects)');
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iQ(selector).append(this);
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return this;
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},
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// ----------
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// Function: append
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// Appends the result of iQ(selector) to the receiver.
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append: function iQClass_append(selector) {
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let object = iQ(selector);
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Utils.assert(object.length == 1 && this.length == 1,
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'does not yet support multi-objects (or null objects)');
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this[0].appendChild(object[0]);
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return this;
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},
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// ----------
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// Function: attr
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// Sets or gets an attribute on the element(s).
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attr: function iQClass_attr(key, value) {
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Utils.assert(typeof key === 'string', 'string key');
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if (typeof value === "undefined") {
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Utils.assert(this.length == 1, 'retrieval does not support multi-objects (or null objects)');
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return this[0].getAttribute(key);
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}
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for (let i = 0; this[i] != null; i++)
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this[i].setAttribute(key, value);
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return this;
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},
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// ----------
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// Function: css
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// Sets or gets CSS properties on the receiver. When setting certain numerical properties,
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// will automatically add "px". A property can be removed by setting it to null.
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//
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// Possible call patterns:
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// a: object, b: undefined - sets with properties from a
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// a: string, b: undefined - gets property specified by a
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// a: string, b: string/number - sets property specified by a to b
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css: function iQClass_css(a, b) {
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let properties = null;
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if (typeof a === 'string') {
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let key = a;
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if (typeof b === "undefined") {
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Utils.assert(this.length == 1, 'retrieval does not support multi-objects (or null objects)');
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return window.getComputedStyle(this[0], null).getPropertyValue(key);
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}
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properties = {};
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properties[key] = b;
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} else {
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properties = a;
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}
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let pixels = {
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'left': true,
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'top': true,
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'right': true,
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'bottom': true,
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'width': true,
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'height': true
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};
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for (let i = 0; this[i] != null; i++) {
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let elem = this[i];
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for (let key in properties) {
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let value = properties[key];
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if (pixels[key] && typeof value != 'string')
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value += 'px';
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if (value == null) {
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elem.style.removeProperty(key);
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} else if (key.indexOf('-') != -1)
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elem.style.setProperty(key, value, '');
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else
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elem.style[key] = value;
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}
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}
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return this;
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},
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// ----------
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// Function: animate
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// Uses CSS transitions to animate the element.
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//
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// Parameters:
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// css - an object map of the CSS properties to change
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// options - an object with various properites (see below)
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//
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// Possible "options" properties:
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// duration - how long to animate, in milliseconds
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// easing - easing function to use. Possibilities include
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// "tabviewBounce", "easeInQuad". Default is "ease".
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// complete - function to call once the animation is done, takes nothing
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// in, but "this" is set to the element that was animated.
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animate: function iQClass_animate(css, options) {
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Utils.assert(this.length == 1, 'does not yet support multi-objects (or null objects)');
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if (!options)
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options = {};
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let easings = {
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tabviewBounce: "cubic-bezier(0.0, 0.63, .6, 1.29)",
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easeInQuad: 'ease-in', // TODO: make it a real easeInQuad, or decide we don't care
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fast: 'cubic-bezier(0.7,0,1,1)'
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};
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let duration = (options.duration || 400);
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let easing = (easings[options.easing] || 'ease');
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// The latest versions of Firefox do not animate from a non-explicitly
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// set css properties. So for each element to be animated, go through
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// and explicitly define 'em.
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let rupper = /([A-Z])/g;
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this.each(function(elem) {
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let cStyle = window.getComputedStyle(elem, null);
|
|
for (let prop in css) {
|
|
prop = prop.replace(rupper, "-$1").toLowerCase();
|
|
iQ(elem).css(prop, cStyle.getPropertyValue(prop));
|
|
}
|
|
});
|
|
|
|
this.css({
|
|
'-moz-transition-property': 'all', // TODO: just animate the properties we're changing
|
|
'-moz-transition-duration': (duration / 1000) + 's',
|
|
'-moz-transition-timing-function': easing
|
|
});
|
|
|
|
this.css(css);
|
|
|
|
let self = this;
|
|
setTimeout(function() {
|
|
self.css({
|
|
'-moz-transition-property': 'none',
|
|
'-moz-transition-duration': '',
|
|
'-moz-transition-timing-function': ''
|
|
});
|
|
|
|
if (typeof options.complete == "function")
|
|
options.complete.apply(self);
|
|
}, duration);
|
|
|
|
return this;
|
|
},
|
|
|
|
// ----------
|
|
// Function: fadeOut
|
|
// Animates the receiver to full transparency. Calls callback on completion.
|
|
fadeOut: function iQClass_fadeOut(callback) {
|
|
Utils.assert(typeof callback == "function" || typeof callback === "undefined",
|
|
'does not yet support duration');
|
|
|
|
this.animate({
|
|
opacity: 0
|
|
}, {
|
|
duration: 400,
|
|
complete: function() {
|
|
iQ(this).css({display: 'none'});
|
|
if (typeof callback == "function")
|
|
callback.apply(this);
|
|
}
|
|
});
|
|
|
|
return this;
|
|
},
|
|
|
|
// ----------
|
|
// Function: fadeIn
|
|
// Animates the receiver to full opacity.
|
|
fadeIn: function iQClass_fadeIn() {
|
|
this.css({display: ''});
|
|
this.animate({
|
|
opacity: 1
|
|
}, {
|
|
duration: 400
|
|
});
|
|
|
|
return this;
|
|
},
|
|
|
|
// ----------
|
|
// Function: hide
|
|
// Hides the receiver.
|
|
hide: function iQClass_hide() {
|
|
this.css({display: 'none', opacity: 0});
|
|
return this;
|
|
},
|
|
|
|
// ----------
|
|
// Function: show
|
|
// Shows the receiver.
|
|
show: function iQClass_show() {
|
|
this.css({display: '', opacity: 1});
|
|
return this;
|
|
},
|
|
|
|
// ----------
|
|
// Function: bind
|
|
// Binds the given function to the given event type. Also wraps the function
|
|
// in a try/catch block that does a Utils.log on any errors.
|
|
bind: function iQClass_bind(type, func) {
|
|
let handler = function(event) func.apply(this, [event]);
|
|
|
|
for (let i = 0; this[i] != null; i++) {
|
|
let elem = this[i];
|
|
if (!elem.iQEventData)
|
|
elem.iQEventData = {};
|
|
|
|
if (!elem.iQEventData[type])
|
|
elem.iQEventData[type] = [];
|
|
|
|
elem.iQEventData[type].push({
|
|
original: func,
|
|
modified: handler
|
|
});
|
|
|
|
elem.addEventListener(type, handler, false);
|
|
}
|
|
|
|
return this;
|
|
},
|
|
|
|
// ----------
|
|
// Function: one
|
|
// Binds the given function to the given event type, but only for one call;
|
|
// automatically unbinds after the event fires once.
|
|
one: function iQClass_one(type, func) {
|
|
Utils.assert(typeof func == "function", 'does not support eventData argument');
|
|
|
|
let handler = function(e) {
|
|
iQ(this).unbind(type, handler);
|
|
return func.apply(this, [e]);
|
|
};
|
|
|
|
return this.bind(type, handler);
|
|
},
|
|
|
|
// ----------
|
|
// Function: unbind
|
|
// Unbinds the given function from the given event type.
|
|
unbind: function iQClass_unbind(type, func) {
|
|
Utils.assert(typeof func == "function", 'Must provide a function');
|
|
|
|
for (let i = 0; this[i] != null; i++) {
|
|
let elem = this[i];
|
|
let handler = func;
|
|
if (elem.iQEventData && elem.iQEventData[type]) {
|
|
let count = elem.iQEventData[type].length;
|
|
for (let a = 0; a < count; a++) {
|
|
let pair = elem.iQEventData[type][a];
|
|
if (pair.original == func) {
|
|
handler = pair.modified;
|
|
elem.iQEventData[type].splice(a, 1);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
elem.removeEventListener(type, handler, false);
|
|
}
|
|
|
|
return this;
|
|
}
|
|
};
|
|
|
|
// ----------
|
|
// Create various event aliases
|
|
let events = [
|
|
'keyup',
|
|
'keydown',
|
|
'keypress',
|
|
'mouseup',
|
|
'mousedown',
|
|
'mouseover',
|
|
'mouseout',
|
|
'mousemove',
|
|
'click',
|
|
'resize',
|
|
'change',
|
|
'blur',
|
|
'focus'
|
|
];
|
|
|
|
events.forEach(function(event) {
|
|
iQClass.prototype[event] = function(func) {
|
|
return this.bind(event, func);
|
|
};
|
|
});
|