507 lines
15 KiB
JavaScript
507 lines
15 KiB
JavaScript
/*
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Copyright (c) 2009, Yahoo! Inc. All rights reserved.
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Code licensed under the BSD License:
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http://developer.yahoo.net/yui/license.txt
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version: 3.0.0
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build: 1549
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*/
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YUI.add('dom-style', function(Y) {
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(function(Y) {
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/**
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* Add style management functionality to DOM.
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* @module dom
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* @submodule dom-style
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* @for DOM
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*/
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var DOCUMENT_ELEMENT = 'documentElement',
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DEFAULT_VIEW = 'defaultView',
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OWNER_DOCUMENT = 'ownerDocument',
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STYLE = 'style',
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FLOAT = 'float',
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CSS_FLOAT = 'cssFloat',
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STYLE_FLOAT = 'styleFloat',
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TRANSPARENT = 'transparent',
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GET_COMPUTED_STYLE = 'getComputedStyle',
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DOCUMENT = Y.config.doc,
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UNDEFINED = undefined,
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re_color = /color$/i;
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Y.mix(Y.DOM, {
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CUSTOM_STYLES: {
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},
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/**
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* Sets a style property for a given element.
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* @method setStyle
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* @param {HTMLElement} An HTMLElement to apply the style to.
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* @param {String} att The style property to set.
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* @param {String|Number} val The value.
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*/
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setStyle: function(node, att, val, style) {
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style = style || node.style;
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var CUSTOM_STYLES = Y.DOM.CUSTOM_STYLES;
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if (style) {
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if (val === null) {
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val = ''; // normalize for unsetting
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}
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if (att in CUSTOM_STYLES) {
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if (CUSTOM_STYLES[att].set) {
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CUSTOM_STYLES[att].set(node, val, style);
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return; // NOTE: return
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} else if (typeof CUSTOM_STYLES[att] === 'string') {
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att = CUSTOM_STYLES[att];
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}
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}
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style[att] = val;
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}
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},
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/**
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* Returns the current style value for the given property.
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* @method getStyle
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* @param {HTMLElement} An HTMLElement to get the style from.
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* @param {String} att The style property to get.
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*/
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getStyle: function(node, att) {
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var style = node[STYLE],
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CUSTOM_STYLES = Y.DOM.CUSTOM_STYLES,
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val = '';
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if (style) {
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if (att in CUSTOM_STYLES) {
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if (CUSTOM_STYLES[att].get) {
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return CUSTOM_STYLES[att].get(node, att, style); // NOTE: return
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} else if (typeof CUSTOM_STYLES[att] === 'string') {
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att = CUSTOM_STYLES[att];
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}
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}
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val = style[att];
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if (val === '') { // TODO: is empty string sufficient?
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val = Y.DOM[GET_COMPUTED_STYLE](node, att);
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}
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}
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return val;
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},
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/**
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* Sets multiple style properties.
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* @method setStyles
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* @param {HTMLElement} node An HTMLElement to apply the styles to.
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* @param {Object} hash An object literal of property:value pairs.
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*/
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setStyles: function(node, hash) {
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var style = node.style;
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Y.each(hash, function(v, n) {
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Y.DOM.setStyle(node, n, v, style);
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}, Y.DOM);
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},
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/**
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* Returns the computed style for the given node.
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* @method getComputedStyle
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* @param {HTMLElement} An HTMLElement to get the style from.
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* @param {String} att The style property to get.
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* @return {String} The computed value of the style property.
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*/
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getComputedStyle: function(node, att) {
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var val = '',
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doc = node[OWNER_DOCUMENT];
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if (node[STYLE]) {
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val = doc[DEFAULT_VIEW][GET_COMPUTED_STYLE](node, null)[att];
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}
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return val;
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}
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});
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// normalize reserved word float alternatives ("cssFloat" or "styleFloat")
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if (DOCUMENT[DOCUMENT_ELEMENT][STYLE][CSS_FLOAT] !== UNDEFINED) {
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Y.DOM.CUSTOM_STYLES[FLOAT] = CSS_FLOAT;
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} else if (DOCUMENT[DOCUMENT_ELEMENT][STYLE][STYLE_FLOAT] !== UNDEFINED) {
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Y.DOM.CUSTOM_STYLES[FLOAT] = STYLE_FLOAT;
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}
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// fix opera computedStyle default color unit (convert to rgb)
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if (Y.UA.opera) {
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Y.DOM[GET_COMPUTED_STYLE] = function(node, att) {
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var view = node[OWNER_DOCUMENT][DEFAULT_VIEW],
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val = view[GET_COMPUTED_STYLE](node, '')[att];
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if (re_color.test(att)) {
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val = Y.Color.toRGB(val);
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}
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return val;
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};
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}
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// safari converts transparent to rgba(), others use "transparent"
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if (Y.UA.webkit) {
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Y.DOM[GET_COMPUTED_STYLE] = function(node, att) {
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var view = node[OWNER_DOCUMENT][DEFAULT_VIEW],
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val = view[GET_COMPUTED_STYLE](node, '')[att];
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if (val === 'rgba(0, 0, 0, 0)') {
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val = TRANSPARENT;
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}
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return val;
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};
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}
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})(Y);
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(function(Y) {
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var PARSE_INT = parseInt,
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RE = RegExp;
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Y.Color = {
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KEYWORDS: {
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black: '000',
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silver: 'c0c0c0',
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gray: '808080',
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white: 'fff',
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maroon: '800000',
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red: 'f00',
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purple: '800080',
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fuchsia: 'f0f',
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green: '008000',
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lime: '0f0',
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olive: '808000',
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yellow: 'ff0',
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navy: '000080',
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blue: '00f',
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teal: '008080',
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aqua: '0ff'
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},
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re_RGB: /^rgb\(([0-9]+)\s*,\s*([0-9]+)\s*,\s*([0-9]+)\)$/i,
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re_hex: /^#?([0-9A-F]{2})([0-9A-F]{2})([0-9A-F]{2})$/i,
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re_hex3: /([0-9A-F])/gi,
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toRGB: function(val) {
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if (!Y.Color.re_RGB.test(val)) {
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val = Y.Color.toHex(val);
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}
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if(Y.Color.re_hex.exec(val)) {
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val = 'rgb(' + [
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PARSE_INT(RE.$1, 16),
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PARSE_INT(RE.$2, 16),
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PARSE_INT(RE.$3, 16)
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].join(', ') + ')';
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}
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return val;
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},
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toHex: function(val) {
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val = Y.Color.KEYWORDS[val] || val;
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if (Y.Color.re_RGB.exec(val)) {
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val = [
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Number(RE.$1).toString(16),
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Number(RE.$2).toString(16),
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Number(RE.$3).toString(16)
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];
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for (var i = 0; i < val.length; i++) {
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if (val[i].length < 2) {
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val[i] = val[i].replace(Y.Color.re_hex3, '$1$1');
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}
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}
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val = '#' + val.join('');
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}
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if (val.length < 6) {
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val = val.replace(Y.Color.re_hex3, '$1$1');
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}
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if (val !== 'transparent' && val.indexOf('#') < 0) {
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val = '#' + val;
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}
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return val.toLowerCase();
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}
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};
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})(Y);
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(function(Y) {
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var HAS_LAYOUT = 'hasLayout',
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PX = 'px',
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FILTER = 'filter',
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FILTERS = 'filters',
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OPACITY = 'opacity',
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AUTO = 'auto',
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BORDER_WIDTH = 'borderWidth',
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BORDER_TOP_WIDTH = 'borderTopWidth',
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BORDER_RIGHT_WIDTH = 'borderRightWidth',
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BORDER_BOTTOM_WIDTH = 'borderBottomWidth',
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BORDER_LEFT_WIDTH = 'borderLeftWidth',
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WIDTH = 'width',
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HEIGHT = 'height',
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TRANSPARENT = 'transparent',
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VISIBLE = 'visible',
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GET_COMPUTED_STYLE = 'getComputedStyle',
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UNDEFINED = undefined,
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documentElement = document.documentElement,
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// TODO: unit-less lineHeight (e.g. 1.22)
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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,
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_getStyleObj = function(node) {
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return node.currentStyle || node.style;
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},
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ComputedStyle = {
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CUSTOM_STYLES: {},
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get: function(el, property) {
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var value = '',
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current;
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if (el) {
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current = _getStyleObj(el)[property];
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if (property === OPACITY && Y.DOM.CUSTOM_STYLES[OPACITY]) {
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value = Y.DOM.CUSTOM_STYLES[OPACITY].get(el);
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} else if (!current || (current.indexOf && current.indexOf(PX) > -1)) { // no need to convert
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value = current;
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} else if (Y.DOM.IE.COMPUTED[property]) { // use compute function
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value = Y.DOM.IE.COMPUTED[property](el, property);
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} else if (re_unit.test(current)) { // convert to pixel
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value = ComputedStyle.getPixel(el, property) + PX;
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} else {
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value = current;
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}
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}
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return value;
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},
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sizeOffsets: {
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width: ['Left', 'Right'],
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height: ['Top', 'Bottom'],
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top: ['Top'],
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bottom: ['Bottom']
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},
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getOffset: function(el, prop) {
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var current = _getStyleObj(el)[prop], // value of "width", "top", etc.
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capped = prop.charAt(0).toUpperCase() + prop.substr(1), // "Width", "Top", etc.
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offset = 'offset' + capped, // "offsetWidth", "offsetTop", etc.
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pixel = 'pixel' + capped, // "pixelWidth", "pixelTop", etc.
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sizeOffsets = ComputedStyle.sizeOffsets[prop],
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value = '';
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// IE pixelWidth incorrect for percent
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// manually compute by subtracting padding and border from offset size
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// NOTE: clientWidth/Height (size minus border) is 0 when current === AUTO so offsetHeight is used
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// reverting to auto from auto causes position stacking issues (old impl)
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if (current === AUTO || current.indexOf('%') > -1) {
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value = el['offset' + capped];
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if (sizeOffsets[0]) {
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value -= ComputedStyle.getPixel(el, 'padding' + sizeOffsets[0]);
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value -= ComputedStyle.getBorderWidth(el, 'border' + sizeOffsets[0] + 'Width', 1);
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}
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if (sizeOffsets[1]) {
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value -= ComputedStyle.getPixel(el, 'padding' + sizeOffsets[1]);
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value -= ComputedStyle.getBorderWidth(el, 'border' + sizeOffsets[1] + 'Width', 1);
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}
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} else { // use style.pixelWidth, etc. to convert to pixels
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// need to map style.width to currentStyle (no currentStyle.pixelWidth)
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if (!el.style[pixel] && !el.style[prop]) {
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el.style[prop] = current;
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}
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value = el.style[pixel];
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}
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return value + PX;
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},
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borderMap: {
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thin: '2px',
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medium: '4px',
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thick: '6px'
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},
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getBorderWidth: function(el, property, omitUnit) {
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var unit = omitUnit ? '' : PX,
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current = el.currentStyle[property];
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if (current.indexOf(PX) < 0) { // look up keywords
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if (ComputedStyle.borderMap[current]) {
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current = ComputedStyle.borderMap[current];
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} else {
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}
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}
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return (omitUnit) ? parseFloat(current) : current;
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},
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getPixel: function(node, att) {
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// use pixelRight to convert to px
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var val = null,
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style = _getStyleObj(node),
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styleRight = style.right,
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current = style[att];
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node.style.right = current;
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val = node.style.pixelRight;
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node.style.right = styleRight; // revert
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return val;
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},
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getMargin: function(node, att) {
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var val,
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style = _getStyleObj(node);
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if (style[att] == AUTO) {
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val = 0;
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} else {
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val = ComputedStyle.getPixel(node, att);
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}
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return val + PX;
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},
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getVisibility: function(node, att) {
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var current;
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while ( (current = node.currentStyle) && current[att] == 'inherit') { // NOTE: assignment in test
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node = node.parentNode;
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}
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return (current) ? current[att] : VISIBLE;
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},
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getColor: function(node, att) {
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var current = _getStyleObj(node)[att];
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if (!current || current === TRANSPARENT) {
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Y.DOM.elementByAxis(node, 'parentNode', null, function(parent) {
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current = _getStyleObj(parent)[att];
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if (current && current !== TRANSPARENT) {
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node = parent;
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return true;
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}
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});
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}
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return Y.Color.toRGB(current);
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},
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getBorderColor: function(node, att) {
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var current = _getStyleObj(node),
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val = current[att] || current.color;
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return Y.Color.toRGB(Y.Color.toHex(val));
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}
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},
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//fontSize: getPixelFont,
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IEComputed = {};
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// use alpha filter for IE opacity
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try {
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if (documentElement.style[OPACITY] === UNDEFINED &&
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documentElement[FILTERS]) {
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Y.DOM.CUSTOM_STYLES[OPACITY] = {
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get: function(node) {
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var val = 100;
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try { // will error if no DXImageTransform
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val = node[FILTERS]['DXImageTransform.Microsoft.Alpha'][OPACITY];
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} catch(e) {
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try { // make sure its in the document
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val = node[FILTERS]('alpha')[OPACITY];
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} catch(err) {
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}
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}
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return val / 100;
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},
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set: function(node, val, style) {
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var current,
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styleObj;
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if (val === '') { // normalize inline style behavior
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styleObj = _getStyleObj(node);
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current = (OPACITY in styleObj) ? styleObj[OPACITY] : 1; // revert to original opacity
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val = current;
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}
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if (typeof style[FILTER] == 'string') { // in case not appended
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style[FILTER] = 'alpha(' + OPACITY + '=' + val * 100 + ')';
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if (!node.currentStyle || !node.currentStyle[HAS_LAYOUT]) {
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style.zoom = 1; // needs layout
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}
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}
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}
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};
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}
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} catch(e) {
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}
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try {
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document.createElement('div').style.height = '-1px';
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} catch(e) { // IE throws error on invalid style set; trap common cases
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Y.DOM.CUSTOM_STYLES.height = {
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set: function(node, val, style) {
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var floatVal = parseFloat(val);
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if (isNaN(floatVal) || floatVal >= 0) {
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style.height = val;
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} else {
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}
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}
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};
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Y.DOM.CUSTOM_STYLES.width = {
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set: function(node, val, style) {
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var floatVal = parseFloat(val);
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if (isNaN(floatVal) || floatVal >= 0) {
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style.width = val;
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} else {
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}
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}
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};
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}
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// TODO: top, right, bottom, left
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IEComputed[WIDTH] = IEComputed[HEIGHT] = ComputedStyle.getOffset;
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IEComputed.color = IEComputed.backgroundColor = ComputedStyle.getColor;
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IEComputed[BORDER_WIDTH] = IEComputed[BORDER_TOP_WIDTH] = IEComputed[BORDER_RIGHT_WIDTH] =
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IEComputed[BORDER_BOTTOM_WIDTH] = IEComputed[BORDER_LEFT_WIDTH] =
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ComputedStyle.getBorderWidth;
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IEComputed.marginTop = IEComputed.marginRight = IEComputed.marginBottom =
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IEComputed.marginLeft = ComputedStyle.getMargin;
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IEComputed.visibility = ComputedStyle.getVisibility;
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IEComputed.borderColor = IEComputed.borderTopColor =
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IEComputed.borderRightColor = IEComputed.borderBottomColor =
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IEComputed.borderLeftColor = ComputedStyle.getBorderColor;
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if (!Y.config.win[GET_COMPUTED_STYLE]) {
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Y.DOM[GET_COMPUTED_STYLE] = ComputedStyle.get;
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}
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Y.namespace('DOM.IE');
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Y.DOM.IE.COMPUTED = IEComputed;
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Y.DOM.IE.ComputedStyle = ComputedStyle;
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})(Y);
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}, '3.0.0' ,{requires:['dom-base']});
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