3 Copyright 2012 Yahoo! Inc. All rights reserved.
4 Licensed under the BSD License.
5 http://yuilibrary.com/license/
7 YUI.add('dom-style', function(Y) {
11 * Add style management functionality to DOM.
13 * @submodule dom-style
17 var DOCUMENT_ELEMENT = 'documentElement',
18 DEFAULT_VIEW = 'defaultView',
19 OWNER_DOCUMENT = 'ownerDocument',
22 CSS_FLOAT = 'cssFloat',
23 STYLE_FLOAT = 'styleFloat',
24 TRANSPARENT = 'transparent',
25 GET_COMPUTED_STYLE = 'getComputedStyle',
26 GET_BOUNDING_CLIENT_RECT = 'getBoundingClientRect',
28 WINDOW = Y.config.win,
29 DOCUMENT = Y.config.doc,
30 UNDEFINED = undefined,
34 TRANSFORM = 'transform',
42 re_unit = /width|height|top|left|right|bottom|margin|padding/i;
44 Y.Array.each(VENDOR_TRANSFORM, function(val) {
45 if (val in DOCUMENT[DOCUMENT_ELEMENT].style) {
58 * Sets a style property for a given element.
60 * @param {HTMLElement} An HTMLElement to apply the style to.
61 * @param {String} att The style property to set.
62 * @param {String|Number} val The value.
64 setStyle: function(node, att, val, style) {
65 style = style || node.style;
66 var CUSTOM_STYLES = Y_DOM.CUSTOM_STYLES;
69 if (val === null || val === '') { // normalize unsetting
71 } else if (!isNaN(new Number(val)) && re_unit.test(att)) { // number values may need a unit
72 val += Y_DOM.DEFAULT_UNIT;
75 if (att in CUSTOM_STYLES) {
76 if (CUSTOM_STYLES[att].set) {
77 CUSTOM_STYLES[att].set(node, val, style);
78 return; // NOTE: return
79 } else if (typeof CUSTOM_STYLES[att] === 'string') {
80 att = CUSTOM_STYLES[att];
82 } else if (att === '') { // unset inline styles
91 * Returns the current style value for the given property.
93 * @param {HTMLElement} An HTMLElement to get the style from.
94 * @param {String} att The style property to get.
96 getStyle: function(node, att, style) {
97 style = style || node.style;
98 var CUSTOM_STYLES = Y_DOM.CUSTOM_STYLES,
102 if (att in CUSTOM_STYLES) {
103 if (CUSTOM_STYLES[att].get) {
104 return CUSTOM_STYLES[att].get(node, att, style); // NOTE: return
105 } else if (typeof CUSTOM_STYLES[att] === 'string') {
106 att = CUSTOM_STYLES[att];
110 if (val === '') { // TODO: is empty string sufficient?
111 val = Y_DOM[GET_COMPUTED_STYLE](node, att);
119 * Sets multiple style properties.
121 * @param {HTMLElement} node An HTMLElement to apply the styles to.
122 * @param {Object} hash An object literal of property:value pairs.
124 setStyles: function(node, hash) {
125 var style = node.style;
126 Y.each(hash, function(v, n) {
127 Y_DOM.setStyle(node, n, v, style);
132 * Returns the computed style for the given node.
133 * @method getComputedStyle
134 * @param {HTMLElement} An HTMLElement to get the style from.
135 * @param {String} att The style property to get.
136 * @return {String} The computed value of the style property.
138 getComputedStyle: function(node, att) {
140 doc = node[OWNER_DOCUMENT],
143 if (node[STYLE] && doc[DEFAULT_VIEW] && doc[DEFAULT_VIEW][GET_COMPUTED_STYLE]) {
144 computed = doc[DEFAULT_VIEW][GET_COMPUTED_STYLE](node, null);
145 if (computed) { // FF may be null in some cases (ticket #2530548)
153 // normalize reserved word float alternatives ("cssFloat" or "styleFloat")
154 if (DOCUMENT[DOCUMENT_ELEMENT][STYLE][CSS_FLOAT] !== UNDEFINED) {
155 Y_DOM.CUSTOM_STYLES[FLOAT] = CSS_FLOAT;
156 } else if (DOCUMENT[DOCUMENT_ELEMENT][STYLE][STYLE_FLOAT] !== UNDEFINED) {
157 Y_DOM.CUSTOM_STYLES[FLOAT] = STYLE_FLOAT;
160 // fix opera computedStyle default color unit (convert to rgb)
162 Y_DOM[GET_COMPUTED_STYLE] = function(node, att) {
163 var view = node[OWNER_DOCUMENT][DEFAULT_VIEW],
164 val = view[GET_COMPUTED_STYLE](node, '')[att];
166 if (re_color.test(att)) {
167 val = Y.Color.toRGB(val);
175 // safari converts transparent to rgba(), others use "transparent"
177 Y_DOM[GET_COMPUTED_STYLE] = function(node, att) {
178 var view = node[OWNER_DOCUMENT][DEFAULT_VIEW],
179 val = view[GET_COMPUTED_STYLE](node, '')[att];
181 if (val === 'rgba(0, 0, 0, 0)') {
190 Y.DOM._getAttrOffset = function(node, attr) {
191 var val = Y.DOM[GET_COMPUTED_STYLE](node, attr),
192 offsetParent = node.offsetParent,
197 if (val === 'auto') {
198 position = Y.DOM.getStyle(node, 'position');
199 if (position === 'static' || position === 'relative') {
201 } else if (offsetParent && offsetParent[GET_BOUNDING_CLIENT_RECT]) {
202 parentOffset = offsetParent[GET_BOUNDING_CLIENT_RECT]()[attr];
203 offset = node[GET_BOUNDING_CLIENT_RECT]()[attr];
204 if (attr === 'left' || attr === 'top') {
205 val = offset - parentOffset;
207 val = parentOffset - node[GET_BOUNDING_CLIENT_RECT]()[attr];
215 Y.DOM._getOffset = function(node) {
220 pos = Y_DOM.getStyle(node, 'position');
222 parseInt(Y_DOM[GET_COMPUTED_STYLE](node, 'left'), 10),
223 parseInt(Y_DOM[GET_COMPUTED_STYLE](node, 'top'), 10)
226 if ( isNaN(xy[0]) ) { // in case of 'auto'
227 xy[0] = parseInt(Y_DOM.getStyle(node, 'left'), 10); // try inline
228 if ( isNaN(xy[0]) ) { // default to offset value
229 xy[0] = (pos === 'relative') ? 0 : node.offsetLeft || 0;
233 if ( isNaN(xy[1]) ) { // in case of 'auto'
234 xy[1] = parseInt(Y_DOM.getStyle(node, 'top'), 10); // try inline
235 if ( isNaN(xy[1]) ) { // default to offset value
236 xy[1] = (pos === 'relative') ? 0 : node.offsetTop || 0;
245 Y_DOM.CUSTOM_STYLES.transform = {
246 set: function(node, val, style) {
247 style[TRANSFORM] = val;
250 get: function(node, style) {
251 return Y_DOM[GET_COMPUTED_STYLE](node, TRANSFORM);
258 var PARSE_INT = parseInt,
281 re_RGB: /^rgb\(([0-9]+)\s*,\s*([0-9]+)\s*,\s*([0-9]+)\)$/i,
282 re_hex: /^#?([0-9A-F]{2})([0-9A-F]{2})([0-9A-F]{2})$/i,
283 re_hex3: /([0-9A-F])/gi,
285 toRGB: function(val) {
286 if (!Y.Color.re_RGB.test(val)) {
287 val = Y.Color.toHex(val);
290 if(Y.Color.re_hex.exec(val)) {
292 PARSE_INT(RE.$1, 16),
293 PARSE_INT(RE.$2, 16),
300 toHex: function(val) {
301 val = Y.Color.KEYWORDS[val] || val;
302 if (Y.Color.re_RGB.exec(val)) {
304 Number(RE.$1).toString(16),
305 Number(RE.$2).toString(16),
306 Number(RE.$3).toString(16)
309 for (var i = 0; i < val.length; i++) {
310 if (val[i].length < 2) {
311 val[i] = '0' + val[i];
318 if (val.length < 6) {
319 val = val.replace(Y.Color.re_hex3, '$1$1');
322 if (val !== 'transparent' && val.indexOf('#') < 0) {
326 return val.toUpperCase();
333 }, '3.5.1' ,{requires:['dom-base']});