--- /dev/null
+/*
+Copyright (c) 2009, Yahoo! Inc. All rights reserved.
+Code licensed under the BSD License:
+http://developer.yahoo.net/yui/license.txt
+version: 2.7.0
+*/
+/**
+ * The dom module provides helper methods for manipulating Dom elements.
+ * @module dom
+ *
+ */
+
+(function() {
+ YAHOO.env._id_counter = YAHOO.env._id_counter || 0; // for use with generateId (global to save state if Dom is overwritten)
+
+ // internal shorthand
+ var Y = YAHOO.util,
+ lang = YAHOO.lang,
+ UA = YAHOO.env.ua,
+ trim = YAHOO.lang.trim,
+ propertyCache = {}, // for faster hyphen converts
+ reCache = {}, // cache className regexes
+ RE_TABLE = /^t(?:able|d|h)$/i, // for _calcBorders
+ RE_COLOR = /color$/i,
+
+ // DOM aliases
+ document = window.document,
+ documentElement = document.documentElement,
+
+ // string constants
+ OWNER_DOCUMENT = 'ownerDocument',
+ DEFAULT_VIEW = 'defaultView',
+ DOCUMENT_ELEMENT = 'documentElement',
+ COMPAT_MODE = 'compatMode',
+ OFFSET_LEFT = 'offsetLeft',
+ OFFSET_TOP = 'offsetTop',
+ OFFSET_PARENT = 'offsetParent',
+ PARENT_NODE = 'parentNode',
+ NODE_TYPE = 'nodeType',
+ TAG_NAME = 'tagName',
+ SCROLL_LEFT = 'scrollLeft',
+ SCROLL_TOP = 'scrollTop',
+ GET_BOUNDING_CLIENT_RECT = 'getBoundingClientRect',
+ GET_COMPUTED_STYLE = 'getComputedStyle',
+ CURRENT_STYLE = 'currentStyle',
+ CSS1_COMPAT = 'CSS1Compat',
+ _BACK_COMPAT = 'BackCompat',
+ _CLASS = 'class', // underscore due to reserved word
+ CLASS_NAME = 'className',
+ EMPTY = '',
+ SPACE = ' ',
+ C_START = '(?:^|\\s)',
+ C_END = '(?= |$)',
+ G = 'g',
+ POSITION = 'position',
+ FIXED = 'fixed',
+ RELATIVE = 'relative',
+ LEFT = 'left',
+ TOP = 'top',
+ MEDIUM = 'medium',
+ BORDER_LEFT_WIDTH = 'borderLeftWidth',
+ BORDER_TOP_WIDTH = 'borderTopWidth',
+
+ // brower detection
+ isOpera = UA.opera,
+ isSafari = UA.webkit,
+ isGecko = UA.gecko,
+ isIE = UA.ie;
+
+ /**
+ * Provides helper methods for DOM elements.
+ * @namespace YAHOO.util
+ * @class Dom
+ * @requires yahoo, event
+ */
+ Y.Dom = {
+ CUSTOM_ATTRIBUTES: (!documentElement.hasAttribute) ? { // IE < 8
+ 'for': 'htmlFor',
+ 'class': CLASS_NAME
+ } : { // w3c
+ 'htmlFor': 'for',
+ 'className': _CLASS
+ },
+
+ /**
+ * 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) {
+ var id, nodes, c, i, len;
+
+ if (el) {
+ if (el[NODE_TYPE] || el.item) { // Node, or NodeList
+ return el;
+ }
+
+ if (typeof el === 'string') { // id
+ id = el;
+ el = document.getElementById(el);
+ if (el && el.id === id) { // IE: avoid false match on "name" attribute
+ return el;
+ } else if (el && document.all) { // filter by name
+ el = null;
+ nodes = document.all[id];
+ for (i = 0, len = nodes.length; i < len; ++i) {
+ if (nodes[i].id === id) {
+ return nodes[i];
+ }
+ }
+ }
+ return el;
+ }
+
+ if (el.DOM_EVENTS) { // YAHOO.util.Element
+ el = el.get('element');
+ }
+
+ if ('length' in el) { // array-like
+ c = [];
+ for (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
+ }
+
+ return null;
+ },
+
+ getComputedStyle: function(el, property) {
+ if (window[GET_COMPUTED_STYLE]) {
+ return el[OWNER_DOCUMENT][DEFAULT_VIEW][GET_COMPUTED_STYLE](el, null)[property];
+ } else if (el[CURRENT_STYLE]) {
+ return Y.Dom.IE_ComputedStyle.get(el, property);
+ }
+ },
+
+ /**
+ * 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) {
+ return Y.Dom.batch(el, Y.Dom._getStyle, property);
+ },
+
+ // branching at load instead of runtime
+ _getStyle: function() {
+ if (window[GET_COMPUTED_STYLE]) { // W3C DOM method
+ return function(el, property) {
+ property = (property === 'float') ? property = 'cssFloat' :
+ Y.Dom._toCamel(property);
+
+ var value = el.style[property],
+ computed;
+
+ if (!value) {
+ computed = el[OWNER_DOCUMENT][DEFAULT_VIEW][GET_COMPUTED_STYLE](el, null);
+ if (computed) { // test computed before touching for safari
+ value = computed[property];
+ }
+ }
+
+ return value;
+ };
+ } else if (documentElement[CURRENT_STYLE]) {
+ return function(el, property) {
+ var value;
+
+ switch(property) {
+ case 'opacity' :// IE opacity uses filter
+ value = 100;
+ try { // will error if no DXImageTransform
+ value = el.filters['DXImageTransform.Microsoft.Alpha'].opacity;
+
+ } catch(e) {
+ try { // make sure its in the document
+ value = el.filters('alpha').opacity;
+ } catch(err) {
+ }
+ }
+ return value / 100;
+ case 'float': // fix reserved word
+ property = 'styleFloat'; // fall through
+ default:
+ property = Y.Dom._toCamel(property);
+ value = el[CURRENT_STYLE] ? el[CURRENT_STYLE][property] : null;
+ return ( el.style[property] || value );
+ }
+ };
+ }
+ }(),
+
+ /**
+ * 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) {
+ Y.Dom.batch(el, Y.Dom._setStyle, { prop: property, val: val });
+ },
+
+ _setStyle: function() {
+ if (isIE) {
+ return function(el, args) {
+ var property = Y.Dom._toCamel(args.prop),
+ val = args.val;
+
+ if (el) {
+ switch (property) {
+ case 'opacity':
+ if ( lang.isString(el.style.filter) ) { // in case not appended
+ el.style.filter = 'alpha(opacity=' + val * 100 + ')';
+
+ if (!el[CURRENT_STYLE] || !el[CURRENT_STYLE].hasLayout) {
+ el.style.zoom = 1; // when no layout or cant tell
+ }
+ }
+ break;
+ case 'float':
+ property = 'styleFloat';
+ default:
+ el.style[property] = val;
+ }
+ } else {
+ }
+ };
+ } else {
+ return function(el, args) {
+ var property = Y.Dom._toCamel(args.prop),
+ val = args.val;
+ if (el) {
+ if (property == 'float') {
+ property = 'cssFloat';
+ }
+ el.style[property] = val;
+ } else {
+ }
+ };
+ }
+
+ }(),
+
+ /**
+ * 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) {
+ return Y.Dom.batch(el, Y.Dom._getXY);
+ },
+
+ _canPosition: function(el) {
+ return ( Y.Dom._getStyle(el, 'display') !== 'none' && Y.Dom._inDoc(el) );
+ },
+
+ _getXY: function() {
+ if (document[DOCUMENT_ELEMENT][GET_BOUNDING_CLIENT_RECT]) {
+ return function(node) {
+ var scrollLeft, scrollTop, box, doc,
+ off1, off2, mode, bLeft, bTop,
+ floor = Math.floor, // TODO: round?
+ xy = false;
+
+ if (Y.Dom._canPosition(node)) {
+ box = node[GET_BOUNDING_CLIENT_RECT]();
+ doc = node[OWNER_DOCUMENT];
+ scrollLeft = Y.Dom.getDocumentScrollLeft(doc);
+ scrollTop = Y.Dom.getDocumentScrollTop(doc);
+ xy = [floor(box[LEFT]), floor(box[TOP])];
+
+ if (isIE && UA.ie < 8) { // IE < 8: viewport off by 2
+ off1 = 2;
+ off2 = 2;
+ mode = doc[COMPAT_MODE];
+ bLeft = _getComputedStyle(doc[DOCUMENT_ELEMENT], BORDER_LEFT_WIDTH);
+ bTop = _getComputedStyle(doc[DOCUMENT_ELEMENT], BORDER_TOP_WIDTH);
+
+ if (UA.ie === 6) {
+ if (mode !== _BACK_COMPAT) {
+ off1 = 0;
+ off2 = 0;
+ }
+ }
+
+ if ((mode == _BACK_COMPAT)) {
+ if (bLeft !== MEDIUM) {
+ off1 = parseInt(bLeft, 10);
+ }
+ if (bTop !== MEDIUM) {
+ off2 = parseInt(bTop, 10);
+ }
+ }
+
+ xy[0] -= off1;
+ xy[1] -= off2;
+
+ }
+
+ if ((scrollTop || scrollLeft)) {
+ xy[0] += scrollLeft;
+ xy[1] += scrollTop;
+ }
+
+ // gecko may return sub-pixel (non-int) values
+ xy[0] = floor(xy[0]);
+ xy[1] = floor(xy[1]);
+ } else {
+ }
+
+ return xy;
+ };
+ } else {
+ return function(node) { // ff2, safari: manually calculate by crawling up offsetParents
+ var docScrollLeft, docScrollTop,
+ scrollTop, scrollLeft,
+ bCheck,
+ xy = false,
+ parentNode = node;
+
+ if (Y.Dom._canPosition(node) ) {
+ xy = [node[OFFSET_LEFT], node[OFFSET_TOP]];
+ docScrollLeft = Y.Dom.getDocumentScrollLeft(node[OWNER_DOCUMENT]);
+ docScrollTop = Y.Dom.getDocumentScrollTop(node[OWNER_DOCUMENT]);
+
+ // TODO: refactor with !! or just falsey
+ bCheck = ((isGecko || UA.webkit > 519) ? true : false);
+
+ // TODO: worth refactoring for TOP/LEFT only?
+ while ((parentNode = parentNode[OFFSET_PARENT])) {
+ xy[0] += parentNode[OFFSET_LEFT];
+ xy[1] += parentNode[OFFSET_TOP];
+ if (bCheck) {
+ xy = Y.Dom._calcBorders(parentNode, xy);
+ }
+ }
+
+ // account for any scrolled ancestors
+ if (Y.Dom._getStyle(node, POSITION) !== FIXED) {
+ parentNode = node;
+
+ while ((parentNode = parentNode[PARENT_NODE]) && parentNode[TAG_NAME]) {
+ scrollTop = parentNode[SCROLL_TOP];
+ scrollLeft = parentNode[SCROLL_LEFT];
+
+ //Firefox does something funky with borders when overflow is not visible.
+ if (isGecko && (Y.Dom._getStyle(parentNode, 'overflow') !== 'visible')) {
+ xy = Y.Dom._calcBorders(parentNode, xy);
+ }
+
+ if (scrollTop || scrollLeft) {
+ xy[0] -= scrollLeft;
+ xy[1] -= scrollTop;
+ }
+ }
+ xy[0] += docScrollLeft;
+ xy[1] += docScrollTop;
+
+ } else {
+ //Fix FIXED position -- add scrollbars
+ if (isOpera) {
+ xy[0] -= docScrollLeft;
+ xy[1] -= docScrollTop;
+ } else if (isSafari || isGecko) {
+ xy[0] += docScrollLeft;
+ xy[1] += docScrollTop;
+ }
+ }
+ //Round the numbers so we get sane data back
+ xy[0] = Math.floor(xy[0]);
+ xy[1] = Math.floor(xy[1]);
+ } else {
+ }
+ return xy;
+ };
+ }
+ }(), // NOTE: Executing for loadtime branching
+
+ /**
+ * 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) {
+ Y.Dom.batch(el, Y.Dom._setXY, { pos: pos, noRetry: noRetry });
+ },
+
+ _setXY: function(node, args) {
+ var pos = Y.Dom._getStyle(node, POSITION),
+ setStyle = Y.Dom.setStyle,
+ xy = args.pos,
+ noRetry = args.noRetry,
+
+ delta = [ // assuming pixels; if not we will have to retry
+ parseInt( Y.Dom.getComputedStyle(node, LEFT), 10 ),
+ parseInt( Y.Dom.getComputedStyle(node, TOP), 10 )
+ ],
+
+ currentXY,
+ newXY;
+
+ if (pos == 'static') { // default to relative
+ pos = RELATIVE;
+ setStyle(node, POSITION, pos);
+ }
+
+ currentXY = Y.Dom._getXY(node);
+
+ if (!xy || currentXY === false) { // has to be part of doc to have xy
+ return false;
+ }
+
+ if ( isNaN(delta[0]) ) {// in case of 'auto'
+ delta[0] = (pos == RELATIVE) ? 0 : node[OFFSET_LEFT];
+ }
+ if ( isNaN(delta[1]) ) { // in case of 'auto'
+ delta[1] = (pos == RELATIVE) ? 0 : node[OFFSET_TOP];
+ }
+
+ if (xy[0] !== null) { // from setX
+ setStyle(node, LEFT, xy[0] - currentXY[0] + delta[0] + 'px');
+ }
+
+ if (xy[1] !== null) { // from setY
+ setStyle(node, TOP, xy[1] - currentXY[1] + delta[1] + 'px');
+ }
+
+ if (!noRetry) {
+ newXY = Y.Dom._getXY(node);
+
+ // if retry is true, try one more time if we miss
+ if ( (xy[0] !== null && newXY[0] != xy[0]) ||
+ (xy[1] !== null && newXY[1] != xy[1]) ) {
+ Y.Dom._setXY(node, { pos: xy, noRetry: 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) {
+ var region = false;
+ if ( Y.Dom._canPosition(el) ) {
+ region = Y.Region.getRegion(el);
+ } else {
+ }
+
+ 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.
+ * Note: This method operates against a live collection, so modifying the
+ * collection in the callback (removing/appending nodes, etc.) will have
+ * side effects. Instead you should iterate the returned nodes array,
+ * as you would with the native "getElementsByTagName" method.
+ * @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
+ * @param {Any} o (optional) An optional arg that is passed to the supplied method
+ * @param {Boolean} overrides (optional) Whether or not to override the scope of "method" with "o"
+ * @return {Array} An array of elements that have the given class name
+ */
+ getElementsByClassName: function(className, tag, root, apply, o, overrides) {
+ className = lang.trim(className);
+ tag = tag || '*';
+ root = (root) ? Y.Dom.get(root) : null || document;
+ if (!root) {
+ return [];
+ }
+
+ var nodes = [],
+ elements = root.getElementsByTagName(tag),
+ hasClass = Y.Dom.hasClass;
+
+ for (var i = 0, len = elements.length; i < len; ++i) {
+ if ( hasClass(elements[i], className) ) {
+ nodes[nodes.length] = elements[i];
+ }
+ }
+
+ if (apply) {
+ Y.Dom.batch(nodes, apply, o, overrides);
+ }
+
+ 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) {
+ return Y.Dom.batch(el, Y.Dom._hasClass, className);
+ },
+
+ _hasClass: function(el, className) {
+ var ret = false,
+ current;
+
+ if (el && className) {
+ current = Y.Dom.getAttribute(el, CLASS_NAME) || EMPTY;
+ if (className.exec) {
+ ret = className.test(current);
+ } else {
+ ret = className && (SPACE + current + SPACE).
+ indexOf(SPACE + className + SPACE) > -1;
+ }
+ } else {
+ }
+
+ return ret;
+ },
+
+ /**
+ * 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) {
+ return Y.Dom.batch(el, Y.Dom._addClass, className);
+ },
+
+ _addClass: function(el, className) {
+ var ret = false,
+ current;
+
+ if (el && className) {
+ current = Y.Dom.getAttribute(el, CLASS_NAME) || EMPTY;
+ if ( !Y.Dom._hasClass(el, className) ) {
+ Y.Dom.setAttribute(el, CLASS_NAME, trim(current + SPACE + className));
+ ret = true;
+ }
+ } else {
+ }
+
+ return ret;
+ },
+
+ /**
+ * 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) {
+ return Y.Dom.batch(el, Y.Dom._removeClass, className);
+ },
+
+ _removeClass: function(el, className) {
+ var ret = false,
+ current,
+ newClass,
+ attr;
+
+ if (el && className) {
+ current = Y.Dom.getAttribute(el, CLASS_NAME) || EMPTY;
+ Y.Dom.setAttribute(el, CLASS_NAME, current.replace(Y.Dom._getClassRegex(className), EMPTY));
+
+ newClass = Y.Dom.getAttribute(el, CLASS_NAME);
+ if (current !== newClass) { // else nothing changed
+ Y.Dom.setAttribute(el, CLASS_NAME, trim(newClass)); // trim after comparing to current class
+ ret = true;
+
+ if (Y.Dom.getAttribute(el, CLASS_NAME) === '') { // remove class attribute if empty
+ attr = (el.hasAttribute && el.hasAttribute(_CLASS)) ? _CLASS : CLASS_NAME;
+ el.removeAttribute(attr);
+ }
+ }
+
+ } else {
+ }
+
+ return ret;
+ },
+
+ /**
+ * 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) {
+ return Y.Dom.batch(el, Y.Dom._replaceClass, { from: oldClassName, to: newClassName });
+ },
+
+ _replaceClass: function(el, classObj) {
+ var className,
+ from,
+ to,
+ ret = false,
+ current;
+
+ if (el && classObj) {
+ from = classObj.from;
+ to = classObj.to;
+
+ if (!to) {
+ ret = false;
+ } else if (!from) { // just add if no "from"
+ ret = Y.Dom._addClass(el, classObj.to);
+ } else if (from !== to) { // else nothing to replace
+ // May need to lead with DBLSPACE?
+ current = Y.Dom.getAttribute(el, CLASS_NAME) || EMPTY;
+ className = (SPACE + current.replace(Y.Dom._getClassRegex(from), SPACE + to)).
+ split(Y.Dom._getClassRegex(to));
+
+ // insert to into what would have been the first occurrence slot
+ className.splice(1, 0, SPACE + to);
+ Y.Dom.setAttribute(el, CLASS_NAME, trim(className.join(EMPTY)));
+ ret = true;
+ }
+ } else {
+ }
+
+ return ret;
+ },
+
+ /**
+ * 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) {
+ if (el[OWNER_DOCUMENT].getElementById(id)) { // in case one already exists
+ // use failed id plus prefix to help ensure uniqueness
+ return Y.Dom.generateId(el, id + prefix);
+ }
+ 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);
+
+ var ret = false;
+
+ if ( (haystack && needle) && (haystack[NODE_TYPE] && needle[NODE_TYPE]) ) {
+ if (haystack.contains && haystack !== needle) { // contains returns true when equal
+ ret = haystack.contains(needle);
+ }
+ else if (haystack.compareDocumentPosition) { // gecko
+ ret = !!(haystack.compareDocumentPosition(needle) & 16);
+ }
+ } else {
+ }
+ return ret;
+ },
+
+ /**
+ * Determines whether an HTMLElement is present in the current document.
+ * @method inDocument
+ * @param {String | HTMLElement} el The element to search for
+ * @param {Object} doc An optional document to search, defaults to element's owner document
+ * @return {Boolean} Whether or not the element is present in the current document
+ */
+ inDocument: function(el, doc) {
+ return Y.Dom._inDoc(Y.Dom.get(el), doc);
+ },
+
+ _inDoc: function(el, doc) {
+ var ret = false;
+ if (el && el[TAG_NAME]) {
+ doc = doc || el[OWNER_DOCUMENT];
+ ret = Y.Dom.isAncestor(doc[DOCUMENT_ELEMENT], el);
+ } else {
+ }
+ return ret;
+ },
+
+ /**
+ * 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.
+ * Note: This method operates against a live collection, so modifying the
+ * collection in the callback (removing/appending nodes, etc.) will have
+ * side effects. Instead you should iterate the returned nodes array,
+ * as you would with the native "getElementsByTagName" method.
+ * @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
+ * @param {Any} o (optional) An optional arg that is passed to the supplied method
+ * @param {Boolean} overrides (optional) Whether or not to override the scope of "method" with "o"
+ * @return {Array} Array of HTMLElements
+ */
+ getElementsBy: function(method, tag, root, apply, o, overrides, firstOnly) {
+ 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]) ) {
+ if (firstOnly) {
+ nodes = elements[i];
+ break;
+ } else {
+ nodes[nodes.length] = elements[i];
+ }
+ }
+ }
+
+ if (apply) {
+ Y.Dom.batch(nodes, apply, o, overrides);
+ }
+
+
+ return nodes;
+ },
+
+ /**
+ * Returns the first HTMLElement that passes the test applied by the supplied boolean method.
+ * @method getElementBy
+ * @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
+ * @return {HTMLElement}
+ */
+ getElementBy: function(method, tag, root) {
+ return Y.Dom.getElementsBy(method, tag, root, null, null, null, true);
+ },
+
+ /**
+ * 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} overrides (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, overrides) {
+ var collection = [],
+ scope = (overrides) ? o : window;
+
+ el = (el && (el[TAG_NAME] || el.item)) ? el : Y.Dom.get(el); // skip get() when possible
+ if (el && method) {
+ if (el[TAG_NAME] || el.length === undefined) { // element or not array-like
+ return method.call(scope, el, o);
+ }
+
+ for (var i = 0; i < el.length; ++i) {
+ collection[collection.length] = method.call(scope, el[i], o);
+ }
+ } else {
+ return false;
+ }
+ 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[COMPAT_MODE] != CSS1_COMPAT || isSafari) ? document.body.scrollHeight : documentElement.scrollHeight,
+ 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[COMPAT_MODE] != CSS1_COMPAT || isSafari) ? document.body.scrollWidth : documentElement.scrollWidth,
+ 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
+ mode = document[COMPAT_MODE];
+
+ if ( (mode || isIE) && !isOpera ) { // IE, Gecko
+ height = (mode == CSS1_COMPAT) ?
+ 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
+ mode = document[COMPAT_MODE];
+
+ if (mode || isIE) { // IE, Gecko, Opera
+ width = (mode == CSS1_COMPAT) ?
+ 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[PARENT_NODE]) ) { // NOTE: assignment
+ if ( Y.Dom._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[TAG_NAME] && el[TAG_NAME].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 ( Y.Dom._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 ( Y.Dom._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 = ( Y.Dom._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 = ( Y.Dom._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),
+ 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[DOCUMENT_ELEMENT].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[DOCUMENT_ELEMENT].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[PARENT_NODE]) {
+ return null;
+ }
+
+ return referenceNode[PARENT_NODE].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[PARENT_NODE]) {
+ return null;
+ }
+
+ if (referenceNode.nextSibling) {
+ return referenceNode[PARENT_NODE].insertBefore(newNode, referenceNode.nextSibling);
+ } else {
+ return referenceNode[PARENT_NODE].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);
+ },
+
+ /**
+ * Provides a normalized attribute interface.
+ * @method setAttibute
+ * @param {String | HTMLElement} el The target element for the attribute.
+ * @param {String} attr The attribute to set.
+ * @param {String} val The value of the attribute.
+ */
+ setAttribute: function(el, attr, val) {
+ attr = Y.Dom.CUSTOM_ATTRIBUTES[attr] || attr;
+ el.setAttribute(attr, val);
+ },
+
+
+ /**
+ * Provides a normalized attribute interface.
+ * @method getAttibute
+ * @param {String | HTMLElement} el The target element for the attribute.
+ * @param {String} attr The attribute to get.
+ * @return {String} The current value of the attribute.
+ */
+ getAttribute: function(el, attr) {
+ attr = Y.Dom.CUSTOM_ATTRIBUTES[attr] || attr;
+ return el.getAttribute(attr);
+ },
+
+ _toCamel: function(property) {
+ var c = propertyCache;
+
+ function tU(x,l) {
+ return l.toUpperCase();
+ }
+
+ return c[property] || (c[property] = property.indexOf('-') === -1 ?
+ property :
+ property.replace( /-([a-z])/gi, tU ));
+ },
+
+ _getClassRegex: function(className) {
+ var re;
+ if (className !== undefined) { // allow empty string to pass
+ if (className.exec) { // already a RegExp
+ re = className;
+ } else {
+ re = reCache[className];
+ if (!re) {
+ // escape special chars (".", "[", etc.)
+ className = className.replace(Y.Dom._patterns.CLASS_RE_TOKENS, '\\$1');
+ re = reCache[className] = new RegExp(C_START + className + C_END, G);
+ }
+ }
+ }
+ return re;
+ },
+
+ _patterns: {
+ ROOT_TAG: /^body|html$/i, // body for quirks mode, html for standards,
+ CLASS_RE_TOKENS: /([\.\(\)\^\$\*\+\?\|\[\]\{\}])/g
+ },
+
+
+ _testElement: function(node, method) {
+ return node && node[NODE_TYPE] == 1 && ( !method || method(node) );
+ },
+
+ _calcBorders: function(node, xy2) {
+ var t = parseInt(Y.Dom[GET_COMPUTED_STYLE](node, BORDER_TOP_WIDTH), 10) || 0,
+ l = parseInt(Y.Dom[GET_COMPUTED_STYLE](node, BORDER_LEFT_WIDTH), 10) || 0;
+ if (isGecko) {
+ if (RE_TABLE.test(node[TAG_NAME])) {
+ t = 0;
+ l = 0;
+ }
+ }
+ xy2[0] += l;
+ xy2[1] += t;
+ return xy2;
+ }
+ };
+
+ var _getComputedStyle = Y.Dom[GET_COMPUTED_STYLE];
+ // fix opera computedStyle default color unit (convert to rgb)
+ if (UA.opera) {
+ Y.Dom[GET_COMPUTED_STYLE] = function(node, att) {
+ var val = _getComputedStyle(node, att);
+ if (RE_COLOR.test(att)) {
+ val = Y.Dom.Color.toRGB(val);
+ }
+
+ return val;
+ };
+
+ }
+
+ // safari converts transparent to rgba(), others use "transparent"
+ if (UA.webkit) {
+ Y.Dom[GET_COMPUTED_STYLE] = function(node, att) {
+ var val = _getComputedStyle(node, att);
+
+ if (val === 'rgba(0, 0, 0, 0)') {
+ val = 'transparent';
+ }
+
+ return val;
+ };
+
+ }
+})();
+/**
+ * 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
+ * @property y
+ * @type Int
+ */
+ this.y = 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
+ * @property x
+ * @type Int
+ */
+ this.x = l;
+
+ /**
+ * The region's left extent as index, for symmetry with set/getXY
+ * @property 0
+ * @type Int
+ */
+ this[0] = l;
+
+ /**
+ * The region's total width
+ * @property width
+ * @type Int
+ */
+ this.width = this.right - this.left;
+
+ /**
+ * The region's total height
+ * @property height
+ * @type Int
+ */
+ this.height = this.bottom - this.top;
+};
+
+/**
+ * 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 ),
+ r = Math.min( this.right, region.right ),
+ b = Math.min( this.bottom, region.bottom ),
+ 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 ),
+ r = Math.max( this.right, region.right ),
+ b = Math.max( this.bottom, region.bottom ),
+ 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 +
+ ", height: " + this.height +
+ ", width: " + this.width +
+ "}" );
+};
+
+/**
+ * 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),
+ t = p[1],
+ r = p[0] + el.offsetWidth,
+ b = p[1] + el.offsetHeight,
+ 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];
+ }
+
+ YAHOO.util.Point.superclass.constructor.call(this, y, x, y, x);
+};
+
+YAHOO.extend(YAHOO.util.Point, YAHOO.util.Region);
+
+(function() {
+/**
+ * Add style management functionality to DOM.
+ * @module dom
+ * @for Dom
+ */
+
+var Y = YAHOO.util,
+ CLIENT_TOP = 'clientTop',
+ CLIENT_LEFT = 'clientLeft',
+ PARENT_NODE = 'parentNode',
+ RIGHT = 'right',
+ HAS_LAYOUT = 'hasLayout',
+ PX = 'px',
+ OPACITY = 'opacity',
+ AUTO = 'auto',
+ BORDER_LEFT_WIDTH = 'borderLeftWidth',
+ BORDER_TOP_WIDTH = 'borderTopWidth',
+ BORDER_RIGHT_WIDTH = 'borderRightWidth',
+ BORDER_BOTTOM_WIDTH = 'borderBottomWidth',
+ VISIBLE = 'visible',
+ TRANSPARENT = 'transparent',
+ HEIGHT = 'height',
+ WIDTH = 'width',
+ STYLE = 'style',
+ CURRENT_STYLE = 'currentStyle',
+
+// IE getComputedStyle
+// TODO: unit-less lineHeight (e.g. 1.22)
+ re_size = /^width|height$/,
+ re_unit = /^(\d[.\d]*)+(em|ex|px|gd|rem|vw|vh|vm|ch|mm|cm|in|pt|pc|deg|rad|ms|s|hz|khz|%){1}?/i,
+
+ ComputedStyle = {
+ get: function(el, property) {
+ var value = '',
+ current = el[CURRENT_STYLE][property];
+
+ if (property === OPACITY) {
+ value = Y.Dom.getStyle(el, OPACITY);
+ } else if (!current || (current.indexOf && current.indexOf(PX) > -1)) { // no need to convert
+ value = current;
+ } else if (Y.Dom.IE_COMPUTED[property]) { // use compute function
+ value = Y.Dom.IE_COMPUTED[property](el, property);
+ } else if (re_unit.test(current)) { // convert to pixel
+ value = Y.Dom.IE.ComputedStyle.getPixel(el, property);
+ } else {
+ value = current;
+ }
+
+ return value;
+ },
+
+ getOffset: function(el, prop) {
+ var current = el[CURRENT_STYLE][prop], // value of "width", "top", etc.
+ capped = prop.charAt(0).toUpperCase() + prop.substr(1), // "Width", "Top", etc.
+ offset = 'offset' + capped, // "offsetWidth", "offsetTop", etc.
+ pixel = 'pixel' + capped, // "pixelWidth", "pixelTop", etc.
+ value = '',
+ actual;
+
+ if (current == AUTO) {
+ actual = el[offset]; // offsetHeight/Top etc.
+ if (actual === undefined) { // likely "right" or "bottom"
+ value = 0;
+ }
+
+ value = actual;
+ if (re_size.test(prop)) { // account for box model diff
+ el[STYLE][prop] = actual;
+ if (el[offset] > actual) {
+ // the difference is padding + border (works in Standards & Quirks modes)
+ value = actual - (el[offset] - actual);
+ }
+ el[STYLE][prop] = AUTO; // revert to auto
+ }
+ } else { // convert units to px
+ if (!el[STYLE][pixel] && !el[STYLE][prop]) { // need to map style.width to currentStyle (no currentStyle.pixelWidth)
+ el[STYLE][prop] = current; // no style.pixelWidth if no style.width
+ }
+ value = el[STYLE][pixel];
+ }
+ return value + PX;
+ },
+
+ getBorderWidth: function(el, property) {
+ // clientHeight/Width = paddingBox (e.g. offsetWidth - borderWidth)
+ // clientTop/Left = borderWidth
+ var value = null;
+ if (!el[CURRENT_STYLE][HAS_LAYOUT]) { // TODO: unset layout?
+ el[STYLE].zoom = 1; // need layout to measure client
+ }
+
+ switch(property) {
+ case BORDER_TOP_WIDTH:
+ value = el[CLIENT_TOP];
+ break;
+ case BORDER_BOTTOM_WIDTH:
+ value = el.offsetHeight - el.clientHeight - el[CLIENT_TOP];
+ break;
+ case BORDER_LEFT_WIDTH:
+ value = el[CLIENT_LEFT];
+ break;
+ case BORDER_RIGHT_WIDTH:
+ value = el.offsetWidth - el.clientWidth - el[CLIENT_LEFT];
+ break;
+ }
+ return value + PX;
+ },
+
+ getPixel: function(node, att) {
+ // use pixelRight to convert to px
+ var val = null,
+ styleRight = node[CURRENT_STYLE][RIGHT],
+ current = node[CURRENT_STYLE][att];
+
+ node[STYLE][RIGHT] = current;
+ val = node[STYLE].pixelRight;
+ node[STYLE][RIGHT] = styleRight; // revert
+
+ return val + PX;
+ },
+
+ getMargin: function(node, att) {
+ var val;
+ if (node[CURRENT_STYLE][att] == AUTO) {
+ val = 0 + PX;
+ } else {
+ val = Y.Dom.IE.ComputedStyle.getPixel(node, att);
+ }
+ return val;
+ },
+
+ getVisibility: function(node, att) {
+ var current;
+ while ( (current = node[CURRENT_STYLE]) && current[att] == 'inherit') { // NOTE: assignment in test
+ node = node[PARENT_NODE];
+ }
+ return (current) ? current[att] : VISIBLE;
+ },
+
+ getColor: function(node, att) {
+ return Y.Dom.Color.toRGB(node[CURRENT_STYLE][att]) || TRANSPARENT;
+ },
+
+ getBorderColor: function(node, att) {
+ var current = node[CURRENT_STYLE],
+ val = current[att] || current.color;
+ return Y.Dom.Color.toRGB(Y.Dom.Color.toHex(val));
+ }
+
+ },
+
+//fontSize: getPixelFont,
+ IEComputed = {};
+
+IEComputed.top = IEComputed.right = IEComputed.bottom = IEComputed.left =
+ IEComputed[WIDTH] = IEComputed[HEIGHT] = ComputedStyle.getOffset;
+
+IEComputed.color = ComputedStyle.getColor;
+
+IEComputed[BORDER_TOP_WIDTH] = IEComputed[BORDER_RIGHT_WIDTH] =
+ IEComputed[BORDER_BOTTOM_WIDTH] = IEComputed[BORDER_LEFT_WIDTH] =
+ ComputedStyle.getBorderWidth;
+
+IEComputed.marginTop = IEComputed.marginRight = IEComputed.marginBottom =
+ IEComputed.marginLeft = ComputedStyle.getMargin;
+
+IEComputed.visibility = ComputedStyle.getVisibility;
+IEComputed.borderColor = IEComputed.borderTopColor =
+ IEComputed.borderRightColor = IEComputed.borderBottomColor =
+ IEComputed.borderLeftColor = ComputedStyle.getBorderColor;
+
+Y.Dom.IE_COMPUTED = IEComputed;
+Y.Dom.IE_ComputedStyle = ComputedStyle;
+})();
+(function() {
+/**
+ * Add style management functionality to DOM.
+ * @module dom
+ * @for Dom
+ */
+
+var TO_STRING = 'toString',
+ PARSE_INT = parseInt,
+ RE = RegExp,
+ Y = YAHOO.util;
+
+Y.Dom.Color = {
+ KEYWORDS: {
+ black: '000',
+ silver: 'c0c0c0',
+ gray: '808080',
+ white: 'fff',
+ maroon: '800000',
+ red: 'f00',
+ purple: '800080',
+ fuchsia: 'f0f',
+ green: '008000',
+ lime: '0f0',
+ olive: '808000',
+ yellow: 'ff0',
+ navy: '000080',
+ blue: '00f',
+ teal: '008080',
+ aqua: '0ff'
+ },
+
+ re_RGB: /^rgb\(([0-9]+)\s*,\s*([0-9]+)\s*,\s*([0-9]+)\)$/i,
+ re_hex: /^#?([0-9A-F]{2})([0-9A-F]{2})([0-9A-F]{2})$/i,
+ re_hex3: /([0-9A-F])/gi,
+
+ toRGB: function(val) {
+ if (!Y.Dom.Color.re_RGB.test(val)) {
+ val = Y.Dom.Color.toHex(val);
+ }
+
+ if(Y.Dom.Color.re_hex.exec(val)) {
+ val = 'rgb(' + [
+ PARSE_INT(RE.$1, 16),
+ PARSE_INT(RE.$2, 16),
+ PARSE_INT(RE.$3, 16)
+ ].join(', ') + ')';
+ }
+ return val;
+ },
+
+ toHex: function(val) {
+ val = Y.Dom.Color.KEYWORDS[val] || val;
+ if (Y.Dom.Color.re_RGB.exec(val)) {
+ var r = (RE.$1.length === 1) ? '0' + RE.$1 : Number(RE.$1),
+ g = (RE.$2.length === 1) ? '0' + RE.$2 : Number(RE.$2),
+ b = (RE.$3.length === 1) ? '0' + RE.$3 : Number(RE.$3);
+
+ val = [
+ r[TO_STRING](16),
+ g[TO_STRING](16),
+ b[TO_STRING](16)
+ ].join('');
+ }
+
+ if (val.length < 6) {
+ val = val.replace(Y.Dom.Color.re_hex3, '$1$1');
+ }
+
+ if (val !== 'transparent' && val.indexOf('#') < 0) {
+ val = '#' + val;
+ }
+
+ return val.toLowerCase();
+ }
+};
+}());
+YAHOO.register("dom", YAHOO.util.Dom, {version: "2.7.0", build: "1799"});
ToastFreeware / philipp / winterrodeln / wradmin.git / blobdiff