/* Copyright (c) 2008, Yahoo! Inc. All rights reserved. Code licensed under the BSD License: http://developer.yahoo.net/yui/license.txt version: 2.5.1 */ /** * 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 propertyCache = {}, // for faster hyphen converts reClassNameCache = {}, // cache regexes for className document = window.document; // cache for faster lookups YAHOO.env._id_counter = YAHOO.env._id_counter || 0; // for use with generateId (global to save state if Dom is overwritten) // 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$/i, // body for quirks mode, html for standards, OP_SCROLL:/^(?:inline|table-row)$/i }; 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 = el.ownerDocument.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.nodeType || el.item)) { // Node, or NodeList return el; } if (YAHOO.lang.isString(el) || !el) { // id 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 != el.ownerDocument.body) { return false; } return getXY(el); }; 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 != el.ownerDocument.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 (!className || !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 + YAHOO.env._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); needle = Y.Dom.get(needle); if (!haystack || !needle) { return false; } if (haystack.contains && needle.nodeType && !isSafari) { // safari contains is broken return haystack.contains(needle); } else if ( haystack.compareDocumentPosition && needle.nodeType ) { return !!(haystack.compareDocumentPosition(needle) & 16); } else if (needle.nodeType) { // fallback to crawling up (safari) return !!this.getAncestorBy(needle, function(el) { return el == haystack; }); } return false; }, /** * 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) { return this.isAncestor(document.documentElement, el); }, /** * 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); } }, /** * Creates a Region based on the viewport relative to the document. * @method getClientRegion * @return {Region} A Region object representing the viewport which accounts for document scroll */ getClientRegion: function() { var t = Y.Dom.getDocumentScrollTop(), l = Y.Dom.getDocumentScrollLeft(), r = Y.Dom.getViewportWidth() + l, b = Y.Dom.getViewportHeight() + t; return new Y.Region(t, r, b, l); } }; var getXY = function() { if (document.documentElement.getBoundingClientRect) { // IE return function(el) { var box = el.getBoundingClientRect(); var rootNode = el.ownerDocument; return [box.left + Y.Dom.getDocumentScrollLeft(rootNode), box.top + Y.Dom.getDocumentScrollTop(rootNode)]; }; } else { return function(el) { // manually calculate by crawling up offsetParents var pos = [el.offsetLeft, el.offsetTop]; var parentNode = el.offsetParent; // safari: subtract body offsets if el is abs (or any offsetParent), unless body is offsetParent var accountForBody = (isSafari && Y.Dom.getStyle(el, 'position') == 'absolute' && el.offsetParent == el.ownerDocument.body); if (parentNode != el) { while (parentNode) { pos[0] += parentNode.offsetLeft; pos[1] += parentNode.offsetTop; if (!accountForBody && isSafari && Y.Dom.getStyle(parentNode,'position') == 'absolute' ) { accountForBody = true; } parentNode = parentNode.offsetParent; } } if (accountForBody) { //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) ) { if (parentNode.scrollTop || parentNode.scrollLeft) { // work around opera inline/table scrollLeft/Top bug (false reports offset as scroll) if (!patterns.OP_SCROLL.test(Y.Dom.getStyle(parentNode, 'display'))) { if (!isOpera || Y.Dom.getStyle(parentNode, 'overflow') !== 'visible') { // opera inline-block misreports when visible pos[0] -= parentNode.scrollLeft; pos[1] -= parentNode.scrollTop; } } } parentNode = parentNode.parentNode; } return pos; }; } }() // NOTE: Executing for loadtime branching })(); /** * 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: "2.5.1", build: "984"});