(function(Y) {
+var CLIENT_TOP = 'clientTop',
+ CLIENT_LEFT = 'clientLeft',
+ HAS_LAYOUT = 'hasLayout',
+ PX = 'px',
+ FILTER = 'filter',
+ FILTERS = 'filters',
+ OPACITY = 'opacity',
+ AUTO = 'auto',
+ BORDER_TOP_WIDTH = 'borderTopWidth',
+ BORDER_RIGHT_WIDTH = 'borderRightWidth',
+ BORDER_BOTTOM_WIDTH = 'borderBottomWidth',
+ BORDER_LEFT_WIDTH = 'borderLeftWidth',
+ WIDTH = 'width',
+ HEIGHT = 'height',
+ TRANSPARENT = 'transparent',
+ VISIBLE = 'visible',
+ GET_COMPUTED_STYLE = 'getComputedStyle',
+ UNDEFINED = undefined,
+ documentElement = document.documentElement,
+
+ // 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,
+
+ _getStyleObj = function(node) {
+ return node.currentStyle || node.style;
+ },
+
+ ComputedStyle = {
+ CUSTOM_STYLES: {},
+
+ get: function(el, property) {
+ var value = '',
+ current;
+
+ if (el) {
+ current = _getStyleObj(el)[property];
+
+ if (property === OPACITY) {
+ value = Y.DOM.CUSTOM_STYLES[OPACITY].get(el);
+ } 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 = ComputedStyle.getPixel(el, property) + PX;
+ } else {
+ value = current;
+ }
+ }
+
+ return value;
+ },
+
+ getOffset: function(el, prop) {
+ var current = _getStyleObj(el)[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.
+ actual,
+ value = '';
+
+ 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 (current.indexOf('%') > -1) { // IE pixelWidth incorrect for percent; manually compute
+ current = el.clientWidth - // offsetWidth - borderWidth
+ ComputedStyle.getPixel(el, 'paddingRight') -
+ ComputedStyle.getPixel(el, 'paddingLeft');
+ }
+ 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.currentStyle || !el.currentStyle[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,
+ style = _getStyleObj(node),
+ styleRight = style.right,
+ current = style[att];
+
+ node.style.right = current;
+ val = node.style.pixelRight;
+ node.style.right = styleRight; // revert
+
+ return val;
+ },
+
+ getMargin: function(node, att) {
+ var val,
+ style = _getStyleObj(node);
+
+ if (style[att] == AUTO) {
+ val = 0;
+ } else {
+ val = ComputedStyle.getPixel(node, att);
+ }
+ return val + PX;
+ },
+
+ getVisibility: function(node, att) {
+ var current;
+ while ( (current = node.currentStyle) && current[att] == 'inherit') { // NOTE: assignment in test
+ node = node.parentNode;
+ }
+ return (current) ? current[att] : VISIBLE;
+ },
+
+ getColor: function(node, att) {
+ var current = _getStyleObj(node)[att];
+
+ if (!current || current === TRANSPARENT) {
+ Y.DOM.elementByAxis(node, 'parentNode', null, function(parent) {
+ current = _getStyleObj(parent)[att];
+ if (current && current !== TRANSPARENT) {
+ node = parent;
+ return true;
+ }
+ });
+ }
+
+ return Y.Color.toRGB(current);
+ },
+
+ getBorderColor: function(node, att) {
+ var current = _getStyleObj(node),
+ val = current[att] || current.color;
+ return Y.Color.toRGB(Y.Color.toHex(val));
+ }
+ },
+
+ //fontSize: getPixelFont,
+ IEComputed = {};
+
+// use alpha filter for IE opacity
+if (documentElement.style[OPACITY] === UNDEFINED &&
+ documentElement[FILTERS]) {
+ Y.DOM.CUSTOM_STYLES[OPACITY] = {
+ get: function(node) {
+ var val = 100;
+ try { // will error if no DXImageTransform
+ val = node[FILTERS]['DXImageTransform.Microsoft.Alpha'][OPACITY];
+
+ } catch(e) {
+ try { // make sure its in the document
+ val = node[FILTERS]('alpha')[OPACITY];
+ } catch(err) {
+ Y.log('getStyle: IE opacity filter not found; returning 1', 'warn', 'dom-style');
+ }
+ }
+ return val / 100;
+ },
+
+ set: function(node, val, style) {
+ var current,
+ styleObj;
+
+ if (val === '') { // normalize inline style behavior
+ styleObj = _getStyleObj(node);
+ current = (OPACITY in styleObj) ? styleObj[OPACITY] : 1; // revert to original opacity
+ val = current;
+ }
+
+ if (typeof style[FILTER] == 'string') { // in case not appended
+ style[FILTER] = 'alpha(' + OPACITY + '=' + val * 100 + ')';
+
+ if (!node.currentStyle || !node.currentStyle[HAS_LAYOUT]) {
+ style.zoom = 1; // needs layout
+ }
+ }
+ }
+ };
+}
+
+try {
+ document.createElement('div').style.height = '-1px';
+} catch(e) { // IE throws error on invalid style set; trap common cases
+ Y.DOM.CUSTOM_STYLES.height = {
+ set: function(node, val, style) {
+ if (parseInt(val, 10) >= 0) {
+ style.height = val;
+ } else {
+ Y.log('invalid style value for height: ' + val, 'warn', 'dom-style');
+ }
+ }
+ };
+
+ Y.DOM.CUSTOM_STYLES.width = {
+ set: function(node, val, style) {
+ if (parseInt(val, 10) >= 0) {
+ style.width = val;
+ } else {
+ Y.log('invalid style value for width: ' + val, 'warn', 'dom-style');
+ }
+ }
+ };
+}
+
+// TODO: top, right, bottom, left
+IEComputed[WIDTH] = IEComputed[HEIGHT] = ComputedStyle.getOffset;
+
+IEComputed.color = IEComputed.backgroundColor = 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;
+
+if (!Y.config.win[GET_COMPUTED_STYLE]) {
+ Y.DOM[GET_COMPUTED_STYLE] = ComputedStyle.get;
+}
+
+Y.namespace('DOM.IE');
+Y.DOM.IE.COMPUTED = IEComputed;
+Y.DOM.IE.ComputedStyle = ComputedStyle;
+
+})(Y);
+