| /* |
| Copyright (c) 2007, Yahoo! Inc. All rights reserved. |
| Code licensed under the BSD License: |
| http://developer.yahoo.net/yui/license.txt |
| version: 2.3.1 |
| */ |
| /** |
| * The dom module provides helper methods for manipulating Dom elements. |
| * @module dom |
| * |
| */ |
| |
| (function() { |
| var Y = YAHOO.util, // internal shorthand |
| getStyle, // for load time browser branching |
| setStyle, // ditto |
| id_counter = 0, // for use with generateId |
| propertyCache = {}, // for faster hyphen converts |
| reClassNameCache = {}; // cache regexes for className |
| |
| // brower detection |
| var isOpera = YAHOO.env.ua.opera, |
| isSafari = YAHOO.env.ua.webkit, |
| isGecko = YAHOO.env.ua.gecko, |
| isIE = YAHOO.env.ua.ie; |
| |
| // regex cache |
| var patterns = { |
| HYPHEN: /(-[a-z])/i, // to normalize get/setStyle |
| ROOT_TAG: /^body|html$/i // body for quirks mode, html for standards |
| }; |
| |
| var toCamel = function(property) { |
| if ( !patterns.HYPHEN.test(property) ) { |
| return property; // no hyphens |
| } |
| |
| if (propertyCache[property]) { // already converted |
| return propertyCache[property]; |
| } |
| |
| var converted = property; |
| |
| while( patterns.HYPHEN.exec(converted) ) { |
| converted = converted.replace(RegExp.$1, |
| RegExp.$1.substr(1).toUpperCase()); |
| } |
| |
| propertyCache[property] = converted; |
| return converted; |
| //return property.replace(/-([a-z])/gi, function(m0, m1) {return m1.toUpperCase()}) // cant use function as 2nd arg yet due to safari bug |
| }; |
| |
| var getClassRegEx = function(className) { |
| var re = reClassNameCache[className]; |
| if (!re) { |
| re = new RegExp('(?:^|\\s+)' + className + '(?:\\s+|$)'); |
| reClassNameCache[className] = re; |
| } |
| return re; |
| }; |
| |
| // branching at load instead of runtime |
| if (document.defaultView && document.defaultView.getComputedStyle) { // W3C DOM method |
| getStyle = function(el, property) { |
| var value = null; |
| |
| if (property == 'float') { // fix reserved word |
| property = 'cssFloat'; |
| } |
| |
| var computed = document.defaultView.getComputedStyle(el, ''); |
| if (computed) { // test computed before touching for safari |
| value = computed[toCamel(property)]; |
| } |
| |
| return el.style[property] || value; |
| }; |
| } else if (document.documentElement.currentStyle && isIE) { // IE method |
| getStyle = function(el, property) { |
| switch( toCamel(property) ) { |
| case 'opacity' :// IE opacity uses filter |
| var val = 100; |
| try { // will error if no DXImageTransform |
| val = el.filters['DXImageTransform.Microsoft.Alpha'].opacity; |
| |
| } catch(e) { |
| try { // make sure its in the document |
| val = el.filters('alpha').opacity; |
| } catch(e) { |
| } |
| } |
| return val / 100; |
| case 'float': // fix reserved word |
| property = 'styleFloat'; // fall through |
| default: |
| // test currentStyle before touching |
| var value = el.currentStyle ? el.currentStyle[property] : null; |
| return ( el.style[property] || value ); |
| } |
| }; |
| } else { // default to inline only |
| getStyle = function(el, property) { return el.style[property]; }; |
| } |
| |
| if (isIE) { |
| setStyle = function(el, property, val) { |
| switch (property) { |
| case 'opacity': |
| if ( YAHOO.lang.isString(el.style.filter) ) { // in case not appended |
| el.style.filter = 'alpha(opacity=' + val * 100 + ')'; |
| |
| if (!el.currentStyle || !el.currentStyle.hasLayout) { |
| el.style.zoom = 1; // when no layout or cant tell |
| } |
| } |
| break; |
| case 'float': |
| property = 'styleFloat'; |
| default: |
| el.style[property] = val; |
| } |
| }; |
| } else { |
| setStyle = function(el, property, val) { |
| if (property == 'float') { |
| property = 'cssFloat'; |
| } |
| el.style[property] = val; |
| }; |
| } |
| |
| var testElement = function(node, method) { |
| return node && node.nodeType == 1 && ( !method || method(node) ); |
| }; |
| |
| /** |
| * Provides helper methods for DOM elements. |
| * @namespace YAHOO.util |
| * @class Dom |
| */ |
| YAHOO.util.Dom = { |
| /** |
| * Returns an HTMLElement reference. |
| * @method get |
| * @param {String | HTMLElement |Array} el Accepts a string to use as an ID for getting a DOM reference, an actual DOM reference, or an Array of IDs and/or HTMLElements. |
| * @return {HTMLElement | Array} A DOM reference to an HTML element or an array of HTMLElements. |
| */ |
| get: function(el) { |
| if (el && (el.tagName || el.item)) { // HTMLElement, or HTMLCollection |
| return el; |
| } |
| |
| if (YAHOO.lang.isString(el) || !el) { // HTMLElement or null |
| return document.getElementById(el); |
| } |
| |
| if (el.length !== undefined) { // array-like |
| var c = []; |
| for (var i = 0, len = el.length; i < len; ++i) { |
| c[c.length] = Y.Dom.get(el[i]); |
| } |
| |
| return c; |
| } |
| |
| return el; // some other object, just pass it back |
| }, |
| |
| /** |
| * Normalizes currentStyle and ComputedStyle. |
| * @method getStyle |
| * @param {String | HTMLElement |Array} el Accepts a string to use as an ID, an actual DOM reference, or an Array of IDs and/or HTMLElements. |
| * @param {String} property The style property whose value is returned. |
| * @return {String | Array} The current value of the style property for the element(s). |
| */ |
| getStyle: function(el, property) { |
| property = toCamel(property); |
| |
| var f = function(element) { |
| return getStyle(element, property); |
| }; |
| |
| return Y.Dom.batch(el, f, Y.Dom, true); |
| }, |
| |
| /** |
| * Wrapper for setting style properties of HTMLElements. Normalizes "opacity" across modern browsers. |
| * @method setStyle |
| * @param {String | HTMLElement | Array} el Accepts a string to use as an ID, an actual DOM reference, or an Array of IDs and/or HTMLElements. |
| * @param {String} property The style property to be set. |
| * @param {String} val The value to apply to the given property. |
| */ |
| setStyle: function(el, property, val) { |
| property = toCamel(property); |
| |
| var f = function(element) { |
| setStyle(element, property, val); |
| |
| }; |
| |
| Y.Dom.batch(el, f, Y.Dom, true); |
| }, |
| |
| /** |
| * Gets the current position of an element based on page coordinates. Element must be part of the DOM tree to have page coordinates (display:none or elements not appended return false). |
| * @method getXY |
| * @param {String | HTMLElement | Array} el Accepts a string to use as an ID, an actual DOM reference, or an Array of IDs and/or HTMLElements |
| * @return {Array} The XY position of the element(s) |
| */ |
| getXY: function(el) { |
| var f = function(el) { |
| |
| // has to be part of document to have pageXY |
| if ( (el.parentNode === null || el.offsetParent === null || |
| this.getStyle(el, 'display') == 'none') && el != document.body) { |
| return false; |
| } |
| |
| var parentNode = null; |
| var pos = []; |
| var box; |
| var doc = el.ownerDocument; |
| |
| if (el.getBoundingClientRect) { // IE |
| box = el.getBoundingClientRect(); |
| return [box.left + Y.Dom.getDocumentScrollLeft(el.ownerDocument), box.top + Y.Dom.getDocumentScrollTop(el.ownerDocument)]; |
| } |
| else { // safari, opera, & gecko |
| pos = [el.offsetLeft, el.offsetTop]; |
| parentNode = el.offsetParent; |
| |
| // safari: if el is abs or any parent is abs, subtract body offsets |
| var hasAbs = this.getStyle(el, 'position') == 'absolute'; |
| |
| if (parentNode != el) { |
| while (parentNode) { |
| pos[0] += parentNode.offsetLeft; |
| pos[1] += parentNode.offsetTop; |
| if (isSafari && !hasAbs && |
| this.getStyle(parentNode,'position') == 'absolute' ) { |
| hasAbs = true; // we need to offset if any parent is absolutely positioned |
| } |
| parentNode = parentNode.offsetParent; |
| } |
| } |
| |
| if (isSafari && hasAbs) { //safari doubles in this case |
| pos[0] -= el.ownerDocument.body.offsetLeft; |
| pos[1] -= el.ownerDocument.body.offsetTop; |
| } |
| } |
| |
| parentNode = el.parentNode; |
| |
| // account for any scrolled ancestors |
| while ( parentNode.tagName && !patterns.ROOT_TAG.test(parentNode.tagName) ) |
| { |
| // work around opera inline/table scrollLeft/Top bug |
| if (Y.Dom.getStyle(parentNode, 'display').search(/^inline|table-row.*$/i)) { |
| pos[0] -= parentNode.scrollLeft; |
| pos[1] -= parentNode.scrollTop; |
| } |
| |
| parentNode = parentNode.parentNode; |
| } |
| |
| |
| return pos; |
| }; |
| |
| return Y.Dom.batch(el, f, Y.Dom, true); |
| }, |
| |
| /** |
| * Gets the current X position of an element based on page coordinates. The element must be part of the DOM tree to have page coordinates (display:none or elements not appended return false). |
| * @method getX |
| * @param {String | HTMLElement | Array} el Accepts a string to use as an ID, an actual DOM reference, or an Array of IDs and/or HTMLElements |
| * @return {Number | Array} The X position of the element(s) |
| */ |
| getX: function(el) { |
| var f = function(el) { |
| return Y.Dom.getXY(el)[0]; |
| }; |
| |
| return Y.Dom.batch(el, f, Y.Dom, true); |
| }, |
| |
| /** |
| * Gets the current Y position of an element based on page coordinates. Element must be part of the DOM tree to have page coordinates (display:none or elements not appended return false). |
| * @method getY |
| * @param {String | HTMLElement | Array} el Accepts a string to use as an ID, an actual DOM reference, or an Array of IDs and/or HTMLElements |
| * @return {Number | Array} The Y position of the element(s) |
| */ |
| getY: function(el) { |
| var f = function(el) { |
| return Y.Dom.getXY(el)[1]; |
| }; |
| |
| return Y.Dom.batch(el, f, Y.Dom, true); |
| }, |
| |
| /** |
| * Set the position of an html element in page coordinates, regardless of how the element is positioned. |
| * The element(s) must be part of the DOM tree to have page coordinates (display:none or elements not appended return false). |
| * @method setXY |
| * @param {String | HTMLElement | Array} el Accepts a string to use as an ID, an actual DOM reference, or an Array of IDs and/or HTMLElements |
| * @param {Array} pos Contains X & Y values for new position (coordinates are page-based) |
| * @param {Boolean} noRetry By default we try and set the position a second time if the first fails |
| */ |
| setXY: function(el, pos, noRetry) { |
| var f = function(el) { |
| var style_pos = this.getStyle(el, 'position'); |
| if (style_pos == 'static') { // default to relative |
| this.setStyle(el, 'position', 'relative'); |
| style_pos = 'relative'; |
| } |
| |
| var pageXY = this.getXY(el); |
| if (pageXY === false) { // has to be part of doc to have pageXY |
| return false; |
| } |
| |
| var delta = [ // assuming pixels; if not we will have to retry |
| parseInt( this.getStyle(el, 'left'), 10 ), |
| parseInt( this.getStyle(el, 'top'), 10 ) |
| ]; |
| |
| if ( isNaN(delta[0]) ) {// in case of 'auto' |
| delta[0] = (style_pos == 'relative') ? 0 : el.offsetLeft; |
| } |
| if ( isNaN(delta[1]) ) { // in case of 'auto' |
| delta[1] = (style_pos == 'relative') ? 0 : el.offsetTop; |
| } |
| |
| if (pos[0] !== null) { el.style.left = pos[0] - pageXY[0] + delta[0] + 'px'; } |
| if (pos[1] !== null) { el.style.top = pos[1] - pageXY[1] + delta[1] + 'px'; } |
| |
| if (!noRetry) { |
| var newXY = this.getXY(el); |
| |
| // if retry is true, try one more time if we miss |
| if ( (pos[0] !== null && newXY[0] != pos[0]) || |
| (pos[1] !== null && newXY[1] != pos[1]) ) { |
| this.setXY(el, pos, true); |
| } |
| } |
| |
| }; |
| |
| Y.Dom.batch(el, f, Y.Dom, true); |
| }, |
| |
| /** |
| * Set the X position of an html element in page coordinates, regardless of how the element is positioned. |
| * The element must be part of the DOM tree to have page coordinates (display:none or elements not appended return false). |
| * @method setX |
| * @param {String | HTMLElement | Array} el Accepts a string to use as an ID, an actual DOM reference, or an Array of IDs and/or HTMLElements. |
| * @param {Int} x The value to use as the X coordinate for the element(s). |
| */ |
| setX: function(el, x) { |
| Y.Dom.setXY(el, [x, null]); |
| }, |
| |
| /** |
| * Set the Y position of an html element in page coordinates, regardless of how the element is positioned. |
| * The element must be part of the DOM tree to have page coordinates (display:none or elements not appended return false). |
| * @method setY |
| * @param {String | HTMLElement | Array} el Accepts a string to use as an ID, an actual DOM reference, or an Array of IDs and/or HTMLElements. |
| * @param {Int} x To use as the Y coordinate for the element(s). |
| */ |
| setY: function(el, y) { |
| Y.Dom.setXY(el, [null, y]); |
| }, |
| |
| /** |
| * Returns the region position of the given element. |
| * The element must be part of the DOM tree to have a region (display:none or elements not appended return false). |
| * @method getRegion |
| * @param {String | HTMLElement | Array} el Accepts a string to use as an ID, an actual DOM reference, or an Array of IDs and/or HTMLElements. |
| * @return {Region | Array} A Region or array of Region instances containing "top, left, bottom, right" member data. |
| */ |
| getRegion: function(el) { |
| var f = function(el) { |
| if ( (el.parentNode === null || el.offsetParent === null || |
| this.getStyle(el, 'display') == 'none') && el != document.body) { |
| return false; |
| } |
| |
| var region = Y.Region.getRegion(el); |
| return region; |
| }; |
| |
| return Y.Dom.batch(el, f, Y.Dom, true); |
| }, |
| |
| /** |
| * Returns the width of the client (viewport). |
| * @method getClientWidth |
| * @deprecated Now using getViewportWidth. This interface left intact for back compat. |
| * @return {Int} The width of the viewable area of the page. |
| */ |
| getClientWidth: function() { |
| return Y.Dom.getViewportWidth(); |
| }, |
| |
| /** |
| * Returns the height of the client (viewport). |
| * @method getClientHeight |
| * @deprecated Now using getViewportHeight. This interface left intact for back compat. |
| * @return {Int} The height of the viewable area of the page. |
| */ |
| getClientHeight: function() { |
| return Y.Dom.getViewportHeight(); |
| }, |
| |
| /** |
| * Returns a array of HTMLElements with the given class. |
| * For optimized performance, include a tag and/or root node when possible. |
| * @method getElementsByClassName |
| * @param {String} className The class name to match against |
| * @param {String} tag (optional) The tag name of the elements being collected |
| * @param {String | HTMLElement} root (optional) The HTMLElement or an ID to use as the starting point |
| * @param {Function} apply (optional) A function to apply to each element when found |
| * @return {Array} An array of elements that have the given class name |
| */ |
| getElementsByClassName: function(className, tag, root, apply) { |
| tag = tag || '*'; |
| root = (root) ? Y.Dom.get(root) : null || document; |
| if (!root) { |
| return []; |
| } |
| |
| var nodes = [], |
| elements = root.getElementsByTagName(tag), |
| re = getClassRegEx(className); |
| |
| for (var i = 0, len = elements.length; i < len; ++i) { |
| if ( re.test(elements[i].className) ) { |
| nodes[nodes.length] = elements[i]; |
| if (apply) { |
| apply.call(elements[i], elements[i]); |
| } |
| } |
| } |
| |
| return nodes; |
| }, |
| |
| /** |
| * Determines whether an HTMLElement has the given className. |
| * @method hasClass |
| * @param {String | HTMLElement | Array} el The element or collection to test |
| * @param {String} className the class name to search for |
| * @return {Boolean | Array} A boolean value or array of boolean values |
| */ |
| hasClass: function(el, className) { |
| var re = getClassRegEx(className); |
| |
| var f = function(el) { |
| return re.test(el.className); |
| }; |
| |
| return Y.Dom.batch(el, f, Y.Dom, true); |
| }, |
| |
| /** |
| * Adds a class name to a given element or collection of elements. |
| * @method addClass |
| * @param {String | HTMLElement | Array} el The element or collection to add the class to |
| * @param {String} className the class name to add to the class attribute |
| * @return {Boolean | Array} A pass/fail boolean or array of booleans |
| */ |
| addClass: function(el, className) { |
| var f = function(el) { |
| if (this.hasClass(el, className)) { |
| return false; // already present |
| } |
| |
| |
| el.className = YAHOO.lang.trim([el.className, className].join(' ')); |
| return true; |
| }; |
| |
| return Y.Dom.batch(el, f, Y.Dom, true); |
| }, |
| |
| /** |
| * Removes a class name from a given element or collection of elements. |
| * @method removeClass |
| * @param {String | HTMLElement | Array} el The element or collection to remove the class from |
| * @param {String} className the class name to remove from the class attribute |
| * @return {Boolean | Array} A pass/fail boolean or array of booleans |
| */ |
| removeClass: function(el, className) { |
| var re = getClassRegEx(className); |
| |
| var f = function(el) { |
| if (!this.hasClass(el, className)) { |
| return false; // not present |
| } |
| |
| |
| var c = el.className; |
| el.className = c.replace(re, ' '); |
| if ( this.hasClass(el, className) ) { // in case of multiple adjacent |
| this.removeClass(el, className); |
| } |
| |
| el.className = YAHOO.lang.trim(el.className); // remove any trailing spaces |
| return true; |
| }; |
| |
| return Y.Dom.batch(el, f, Y.Dom, true); |
| }, |
| |
| /** |
| * Replace a class with another class for a given element or collection of elements. |
| * If no oldClassName is present, the newClassName is simply added. |
| * @method replaceClass |
| * @param {String | HTMLElement | Array} el The element or collection to remove the class from |
| * @param {String} oldClassName the class name to be replaced |
| * @param {String} newClassName the class name that will be replacing the old class name |
| * @return {Boolean | Array} A pass/fail boolean or array of booleans |
| */ |
| replaceClass: function(el, oldClassName, newClassName) { |
| if (!newClassName || oldClassName === newClassName) { // avoid infinite loop |
| return false; |
| } |
| |
| var re = getClassRegEx(oldClassName); |
| |
| var f = function(el) { |
| |
| if ( !this.hasClass(el, oldClassName) ) { |
| this.addClass(el, newClassName); // just add it if nothing to replace |
| return true; // NOTE: return |
| } |
| |
| el.className = el.className.replace(re, ' ' + newClassName + ' '); |
| |
| if ( this.hasClass(el, oldClassName) ) { // in case of multiple adjacent |
| this.replaceClass(el, oldClassName, newClassName); |
| } |
| |
| el.className = YAHOO.lang.trim(el.className); // remove any trailing spaces |
| return true; |
| }; |
| |
| return Y.Dom.batch(el, f, Y.Dom, true); |
| }, |
| |
| /** |
| * Returns an ID and applies it to the element "el", if provided. |
| * @method generateId |
| * @param {String | HTMLElement | Array} el (optional) An optional element array of elements to add an ID to (no ID is added if one is already present). |
| * @param {String} prefix (optional) an optional prefix to use (defaults to "yui-gen"). |
| * @return {String | Array} The generated ID, or array of generated IDs (or original ID if already present on an element) |
| */ |
| generateId: function(el, prefix) { |
| prefix = prefix || 'yui-gen'; |
| |
| var f = function(el) { |
| if (el && el.id) { // do not override existing ID |
| return el.id; |
| } |
| |
| var id = prefix + id_counter++; |
| |
| if (el) { |
| el.id = id; |
| } |
| |
| return id; |
| }; |
| |
| // batch fails when no element, so just generate and return single ID |
| return Y.Dom.batch(el, f, Y.Dom, true) || f.apply(Y.Dom, arguments); |
| }, |
| |
| /** |
| * Determines whether an HTMLElement is an ancestor of another HTML element in the DOM hierarchy. |
| * @method isAncestor |
| * @param {String | HTMLElement} haystack The possible ancestor |
| * @param {String | HTMLElement} needle The possible descendent |
| * @return {Boolean} Whether or not the haystack is an ancestor of needle |
| */ |
| isAncestor: function(haystack, needle) { |
| haystack = Y.Dom.get(haystack); |
| if (!haystack || !needle) { return false; } |
| |
| var f = function(node) { |
| if (haystack.contains && node.nodeType && !isSafari) { // safari contains is broken |
| return haystack.contains(node); |
| } |
| else if ( haystack.compareDocumentPosition && node.nodeType ) { |
| return !!(haystack.compareDocumentPosition(node) & 16); |
| } else if (node.nodeType) { |
| // fallback to crawling up (safari) |
| return !!this.getAncestorBy(node, function(el) { |
| return el == haystack; |
| }); |
| } |
| return false; |
| }; |
| |
| return Y.Dom.batch(needle, f, Y.Dom, true); |
| }, |
| |
| /** |
| * Determines whether an HTMLElement is present in the current document. |
| * @method inDocument |
| * @param {String | HTMLElement} el The element to search for |
| * @return {Boolean} Whether or not the element is present in the current document |
| */ |
| inDocument: function(el) { |
| var f = function(el) { // safari contains fails for body so crawl up |
| if (isSafari) { |
| while (el = el.parentNode) { // note assignment |
| if (el == document.documentElement) { |
| return true; |
| } |
| } |
| return false; |
| } |
| return this.isAncestor(document.documentElement, el); |
| }; |
| |
| return Y.Dom.batch(el, f, Y.Dom, true); |
| }, |
| |
| /** |
| * Returns a array of HTMLElements that pass the test applied by supplied boolean method. |
| * For optimized performance, include a tag and/or root node when possible. |
| * @method getElementsBy |
| * @param {Function} method - A boolean method for testing elements which receives the element as its only argument. |
| * @param {String} tag (optional) The tag name of the elements being collected |
| * @param {String | HTMLElement} root (optional) The HTMLElement or an ID to use as the starting point |
| * @param {Function} apply (optional) A function to apply to each element when found |
| * @return {Array} Array of HTMLElements |
| */ |
| getElementsBy: function(method, tag, root, apply) { |
| tag = tag || '*'; |
| root = (root) ? Y.Dom.get(root) : null || document; |
| |
| if (!root) { |
| return []; |
| } |
| |
| var nodes = [], |
| elements = root.getElementsByTagName(tag); |
| |
| for (var i = 0, len = elements.length; i < len; ++i) { |
| if ( method(elements[i]) ) { |
| nodes[nodes.length] = elements[i]; |
| if (apply) { |
| apply(elements[i]); |
| } |
| } |
| } |
| |
| |
| return nodes; |
| }, |
| |
| /** |
| * Runs the supplied method against each item in the Collection/Array. |
| * The method is called with the element(s) as the first arg, and the optional param as the second ( method(el, o) ). |
| * @method batch |
| * @param {String | HTMLElement | Array} el (optional) An element or array of elements to apply the method to |
| * @param {Function} method The method to apply to the element(s) |
| * @param {Any} o (optional) An optional arg that is passed to the supplied method |
| * @param {Boolean} override (optional) Whether or not to override the scope of "method" with "o" |
| * @return {Any | Array} The return value(s) from the supplied method |
| */ |
| batch: function(el, method, o, override) { |
| el = (el && (el.tagName || el.item)) ? el : Y.Dom.get(el); // skip get() when possible |
| |
| if (!el || !method) { |
| return false; |
| } |
| var scope = (override) ? o : window; |
| |
| if (el.tagName || el.length === undefined) { // element or not array-like |
| return method.call(scope, el, o); |
| } |
| |
| var collection = []; |
| |
| for (var i = 0, len = el.length; i < len; ++i) { |
| collection[collection.length] = method.call(scope, el[i], o); |
| } |
| |
| return collection; |
| }, |
| |
| /** |
| * Returns the height of the document. |
| * @method getDocumentHeight |
| * @return {Int} The height of the actual document (which includes the body and its margin). |
| */ |
| getDocumentHeight: function() { |
| var scrollHeight = (document.compatMode != 'CSS1Compat') ? document.body.scrollHeight : document.documentElement.scrollHeight; |
| |
| var h = Math.max(scrollHeight, Y.Dom.getViewportHeight()); |
| return h; |
| }, |
| |
| /** |
| * Returns the width of the document. |
| * @method getDocumentWidth |
| * @return {Int} The width of the actual document (which includes the body and its margin). |
| */ |
| getDocumentWidth: function() { |
| var scrollWidth = (document.compatMode != 'CSS1Compat') ? document.body.scrollWidth : document.documentElement.scrollWidth; |
| var w = Math.max(scrollWidth, Y.Dom.getViewportWidth()); |
| return w; |
| }, |
| |
| /** |
| * Returns the current height of the viewport. |
| * @method getViewportHeight |
| * @return {Int} The height of the viewable area of the page (excludes scrollbars). |
| */ |
| getViewportHeight: function() { |
| var height = self.innerHeight; // Safari, Opera |
| var mode = document.compatMode; |
| |
| if ( (mode || isIE) && !isOpera ) { // IE, Gecko |
| height = (mode == 'CSS1Compat') ? |
| document.documentElement.clientHeight : // Standards |
| document.body.clientHeight; // Quirks |
| } |
| |
| return height; |
| }, |
| |
| /** |
| * Returns the current width of the viewport. |
| * @method getViewportWidth |
| * @return {Int} The width of the viewable area of the page (excludes scrollbars). |
| */ |
| |
| getViewportWidth: function() { |
| var width = self.innerWidth; // Safari |
| var mode = document.compatMode; |
| |
| if (mode || isIE) { // IE, Gecko, Opera |
| width = (mode == 'CSS1Compat') ? |
| document.documentElement.clientWidth : // Standards |
| document.body.clientWidth; // Quirks |
| } |
| return width; |
| }, |
| |
| /** |
| * Returns the nearest ancestor that passes the test applied by supplied boolean method. |
| * For performance reasons, IDs are not accepted and argument validation omitted. |
| * @method getAncestorBy |
| * @param {HTMLElement} node The HTMLElement to use as the starting point |
| * @param {Function} method - A boolean method for testing elements which receives the element as its only argument. |
| * @return {Object} HTMLElement or null if not found |
| */ |
| getAncestorBy: function(node, method) { |
| while (node = node.parentNode) { // NOTE: assignment |
| if ( testElement(node, method) ) { |
| return node; |
| } |
| } |
| |
| return null; |
| }, |
| |
| /** |
| * Returns the nearest ancestor with the given className. |
| * @method getAncestorByClassName |
| * @param {String | HTMLElement} node The HTMLElement or an ID to use as the starting point |
| * @param {String} className |
| * @return {Object} HTMLElement |
| */ |
| getAncestorByClassName: function(node, className) { |
| node = Y.Dom.get(node); |
| if (!node) { |
| return null; |
| } |
| var method = function(el) { return Y.Dom.hasClass(el, className); }; |
| return Y.Dom.getAncestorBy(node, method); |
| }, |
| |
| /** |
| * Returns the nearest ancestor with the given tagName. |
| * @method getAncestorByTagName |
| * @param {String | HTMLElement} node The HTMLElement or an ID to use as the starting point |
| * @param {String} tagName |
| * @return {Object} HTMLElement |
| */ |
| getAncestorByTagName: function(node, tagName) { |
| node = Y.Dom.get(node); |
| if (!node) { |
| return null; |
| } |
| var method = function(el) { |
| return el.tagName && el.tagName.toUpperCase() == tagName.toUpperCase(); |
| }; |
| |
| return Y.Dom.getAncestorBy(node, method); |
| }, |
| |
| /** |
| * Returns the previous sibling that is an HTMLElement. |
| * For performance reasons, IDs are not accepted and argument validation omitted. |
| * Returns the nearest HTMLElement sibling if no method provided. |
| * @method getPreviousSiblingBy |
| * @param {HTMLElement} node The HTMLElement to use as the starting point |
| * @param {Function} method A boolean function used to test siblings |
| * that receives the sibling node being tested as its only argument |
| * @return {Object} HTMLElement or null if not found |
| */ |
| getPreviousSiblingBy: function(node, method) { |
| while (node) { |
| node = node.previousSibling; |
| if ( testElement(node, method) ) { |
| return node; |
| } |
| } |
| return null; |
| }, |
| |
| /** |
| * Returns the previous sibling that is an HTMLElement |
| * @method getPreviousSibling |
| * @param {String | HTMLElement} node The HTMLElement or an ID to use as the starting point |
| * @return {Object} HTMLElement or null if not found |
| */ |
| getPreviousSibling: function(node) { |
| node = Y.Dom.get(node); |
| if (!node) { |
| return null; |
| } |
| |
| return Y.Dom.getPreviousSiblingBy(node); |
| }, |
| |
| /** |
| * Returns the next HTMLElement sibling that passes the boolean method. |
| * For performance reasons, IDs are not accepted and argument validation omitted. |
| * Returns the nearest HTMLElement sibling if no method provided. |
| * @method getNextSiblingBy |
| * @param {HTMLElement} node The HTMLElement to use as the starting point |
| * @param {Function} method A boolean function used to test siblings |
| * that receives the sibling node being tested as its only argument |
| * @return {Object} HTMLElement or null if not found |
| */ |
| getNextSiblingBy: function(node, method) { |
| while (node) { |
| node = node.nextSibling; |
| if ( testElement(node, method) ) { |
| return node; |
| } |
| } |
| return null; |
| }, |
| |
| /** |
| * Returns the next sibling that is an HTMLElement |
| * @method getNextSibling |
| * @param {String | HTMLElement} node The HTMLElement or an ID to use as the starting point |
| * @return {Object} HTMLElement or null if not found |
| */ |
| getNextSibling: function(node) { |
| node = Y.Dom.get(node); |
| if (!node) { |
| return null; |
| } |
| |
| return Y.Dom.getNextSiblingBy(node); |
| }, |
| |
| /** |
| * Returns the first HTMLElement child that passes the test method. |
| * @method getFirstChildBy |
| * @param {HTMLElement} node The HTMLElement to use as the starting point |
| * @param {Function} method A boolean function used to test children |
| * that receives the node being tested as its only argument |
| * @return {Object} HTMLElement or null if not found |
| */ |
| getFirstChildBy: function(node, method) { |
| var child = ( testElement(node.firstChild, method) ) ? node.firstChild : null; |
| return child || Y.Dom.getNextSiblingBy(node.firstChild, method); |
| }, |
| |
| /** |
| * Returns the first HTMLElement child. |
| * @method getFirstChild |
| * @param {String | HTMLElement} node The HTMLElement or an ID to use as the starting point |
| * @return {Object} HTMLElement or null if not found |
| */ |
| getFirstChild: function(node, method) { |
| node = Y.Dom.get(node); |
| if (!node) { |
| return null; |
| } |
| return Y.Dom.getFirstChildBy(node); |
| }, |
| |
| /** |
| * Returns the last HTMLElement child that passes the test method. |
| * @method getLastChildBy |
| * @param {HTMLElement} node The HTMLElement to use as the starting point |
| * @param {Function} method A boolean function used to test children |
| * that receives the node being tested as its only argument |
| * @return {Object} HTMLElement or null if not found |
| */ |
| getLastChildBy: function(node, method) { |
| if (!node) { |
| return null; |
| } |
| var child = ( testElement(node.lastChild, method) ) ? node.lastChild : null; |
| return child || Y.Dom.getPreviousSiblingBy(node.lastChild, method); |
| }, |
| |
| /** |
| * Returns the last HTMLElement child. |
| * @method getLastChild |
| * @param {String | HTMLElement} node The HTMLElement or an ID to use as the starting point |
| * @return {Object} HTMLElement or null if not found |
| */ |
| getLastChild: function(node) { |
| node = Y.Dom.get(node); |
| return Y.Dom.getLastChildBy(node); |
| }, |
| |
| /** |
| * Returns an array of HTMLElement childNodes that pass the test method. |
| * @method getChildrenBy |
| * @param {HTMLElement} node The HTMLElement to start from |
| * @param {Function} method A boolean function used to test children |
| * that receives the node being tested as its only argument |
| * @return {Array} A static array of HTMLElements |
| */ |
| getChildrenBy: function(node, method) { |
| var child = Y.Dom.getFirstChildBy(node, method); |
| var children = child ? [child] : []; |
| |
| Y.Dom.getNextSiblingBy(child, function(node) { |
| if ( !method || method(node) ) { |
| children[children.length] = node; |
| } |
| return false; // fail test to collect all children |
| }); |
| |
| return children; |
| }, |
| |
| /** |
| * Returns an array of HTMLElement childNodes. |
| * @method getChildren |
| * @param {String | HTMLElement} node The HTMLElement or an ID to use as the starting point |
| * @return {Array} A static array of HTMLElements |
| */ |
| getChildren: function(node) { |
| node = Y.Dom.get(node); |
| if (!node) { |
| } |
| |
| return Y.Dom.getChildrenBy(node); |
| }, |
| |
| /** |
| * Returns the left scroll value of the document |
| * @method getDocumentScrollLeft |
| * @param {HTMLDocument} document (optional) The document to get the scroll value of |
| * @return {Int} The amount that the document is scrolled to the left |
| */ |
| getDocumentScrollLeft: function(doc) { |
| doc = doc || document; |
| return Math.max(doc.documentElement.scrollLeft, doc.body.scrollLeft); |
| }, |
| |
| /** |
| * Returns the top scroll value of the document |
| * @method getDocumentScrollTop |
| * @param {HTMLDocument} document (optional) The document to get the scroll value of |
| * @return {Int} The amount that the document is scrolled to the top |
| */ |
| getDocumentScrollTop: function(doc) { |
| doc = doc || document; |
| return Math.max(doc.documentElement.scrollTop, doc.body.scrollTop); |
| }, |
| |
| /** |
| * Inserts the new node as the previous sibling of the reference node |
| * @method insertBefore |
| * @param {String | HTMLElement} newNode The node to be inserted |
| * @param {String | HTMLElement} referenceNode The node to insert the new node before |
| * @return {HTMLElement} The node that was inserted (or null if insert fails) |
| */ |
| insertBefore: function(newNode, referenceNode) { |
| newNode = Y.Dom.get(newNode); |
| referenceNode = Y.Dom.get(referenceNode); |
| |
| if (!newNode || !referenceNode || !referenceNode.parentNode) { |
| return null; |
| } |
| |
| return referenceNode.parentNode.insertBefore(newNode, referenceNode); |
| }, |
| |
| /** |
| * Inserts the new node as the next sibling of the reference node |
| * @method insertAfter |
| * @param {String | HTMLElement} newNode The node to be inserted |
| * @param {String | HTMLElement} referenceNode The node to insert the new node after |
| * @return {HTMLElement} The node that was inserted (or null if insert fails) |
| */ |
| insertAfter: function(newNode, referenceNode) { |
| newNode = Y.Dom.get(newNode); |
| referenceNode = Y.Dom.get(referenceNode); |
| |
| if (!newNode || !referenceNode || !referenceNode.parentNode) { |
| return null; |
| } |
| |
| if (referenceNode.nextSibling) { |
| return referenceNode.parentNode.insertBefore(newNode, referenceNode.nextSibling); |
| } else { |
| return referenceNode.parentNode.appendChild(newNode); |
| } |
| } |
| }; |
| })(); |
| /** |
| * A region is a representation of an object on a grid. It is defined |
| * by the top, right, bottom, left extents, so is rectangular by default. If |
| * other shapes are required, this class could be extended to support it. |
| * @namespace YAHOO.util |
| * @class Region |
| * @param {Int} t the top extent |
| * @param {Int} r the right extent |
| * @param {Int} b the bottom extent |
| * @param {Int} l the left extent |
| * @constructor |
| */ |
| YAHOO.util.Region = function(t, r, b, l) { |
| |
| /** |
| * The region's top extent |
| * @property top |
| * @type Int |
| */ |
| this.top = t; |
| |
| /** |
| * The region's top extent as index, for symmetry with set/getXY |
| * @property 1 |
| * @type Int |
| */ |
| this[1] = t; |
| |
| /** |
| * The region's right extent |
| * @property right |
| * @type int |
| */ |
| this.right = r; |
| |
| /** |
| * The region's bottom extent |
| * @property bottom |
| * @type Int |
| */ |
| this.bottom = b; |
| |
| /** |
| * The region's left extent |
| * @property left |
| * @type Int |
| */ |
| this.left = l; |
| |
| /** |
| * The region's left extent as index, for symmetry with set/getXY |
| * @property 0 |
| * @type Int |
| */ |
| this[0] = l; |
| }; |
| |
| /** |
| * Returns true if this region contains the region passed in |
| * @method contains |
| * @param {Region} region The region to evaluate |
| * @return {Boolean} True if the region is contained with this region, |
| * else false |
| */ |
| YAHOO.util.Region.prototype.contains = function(region) { |
| return ( region.left >= this.left && |
| region.right <= this.right && |
| region.top >= this.top && |
| region.bottom <= this.bottom ); |
| |
| }; |
| |
| /** |
| * Returns the area of the region |
| * @method getArea |
| * @return {Int} the region's area |
| */ |
| YAHOO.util.Region.prototype.getArea = function() { |
| return ( (this.bottom - this.top) * (this.right - this.left) ); |
| }; |
| |
| /** |
| * Returns the region where the passed in region overlaps with this one |
| * @method intersect |
| * @param {Region} region The region that intersects |
| * @return {Region} The overlap region, or null if there is no overlap |
| */ |
| YAHOO.util.Region.prototype.intersect = function(region) { |
| var t = Math.max( this.top, region.top ); |
| var r = Math.min( this.right, region.right ); |
| var b = Math.min( this.bottom, region.bottom ); |
| var l = Math.max( this.left, region.left ); |
| |
| if (b >= t && r >= l) { |
| return new YAHOO.util.Region(t, r, b, l); |
| } else { |
| return null; |
| } |
| }; |
| |
| /** |
| * Returns the region representing the smallest region that can contain both |
| * the passed in region and this region. |
| * @method union |
| * @param {Region} region The region that to create the union with |
| * @return {Region} The union region |
| */ |
| YAHOO.util.Region.prototype.union = function(region) { |
| var t = Math.min( this.top, region.top ); |
| var r = Math.max( this.right, region.right ); |
| var b = Math.max( this.bottom, region.bottom ); |
| var l = Math.min( this.left, region.left ); |
| |
| return new YAHOO.util.Region(t, r, b, l); |
| }; |
| |
| /** |
| * toString |
| * @method toString |
| * @return string the region properties |
| */ |
| YAHOO.util.Region.prototype.toString = function() { |
| return ( "Region {" + |
| "top: " + this.top + |
| ", right: " + this.right + |
| ", bottom: " + this.bottom + |
| ", left: " + this.left + |
| "}" ); |
| }; |
| |
| /** |
| * Returns a region that is occupied by the DOM element |
| * @method getRegion |
| * @param {HTMLElement} el The element |
| * @return {Region} The region that the element occupies |
| * @static |
| */ |
| YAHOO.util.Region.getRegion = function(el) { |
| var p = YAHOO.util.Dom.getXY(el); |
| |
| var t = p[1]; |
| var r = p[0] + el.offsetWidth; |
| var b = p[1] + el.offsetHeight; |
| var l = p[0]; |
| |
| return new YAHOO.util.Region(t, r, b, l); |
| }; |
| |
| ///////////////////////////////////////////////////////////////////////////// |
| |
| |
| /** |
| * A point is a region that is special in that it represents a single point on |
| * the grid. |
| * @namespace YAHOO.util |
| * @class Point |
| * @param {Int} x The X position of the point |
| * @param {Int} y The Y position of the point |
| * @constructor |
| * @extends YAHOO.util.Region |
| */ |
| YAHOO.util.Point = function(x, y) { |
| if (YAHOO.lang.isArray(x)) { // accept input from Dom.getXY, Event.getXY, etc. |
| y = x[1]; // dont blow away x yet |
| x = x[0]; |
| } |
| |
| /** |
| * The X position of the point, which is also the right, left and index zero (for Dom.getXY symmetry) |
| * @property x |
| * @type Int |
| */ |
| |
| this.x = this.right = this.left = this[0] = x; |
| |
| /** |
| * The Y position of the point, which is also the top, bottom and index one (for Dom.getXY symmetry) |
| * @property y |
| * @type Int |
| */ |
| this.y = this.top = this.bottom = this[1] = y; |
| }; |
| |
| YAHOO.util.Point.prototype = new YAHOO.util.Region(); |
| |
| YAHOO.register("dom", YAHOO.util.Dom, {version: "2.3.1", build: "541"}); |
