(function(Y) {
+var HAS_LAYOUT = 'hasLayout',
+ PX = 'px',
+ FILTER = 'filter',
+ FILTERS = 'filters',
+ OPACITY = 'opacity',
+ AUTO = 'auto',
+
+ BORDER_WIDTH = 'borderWidth',
+ 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_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 && Y.DOM.CUSTOM_STYLES[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;
+ },
+
+ sizeOffsets: {
+ width: ['Left', 'Right'],
+ height: ['Top', 'Bottom'],
+ top: ['Top'],
+ bottom: ['Bottom']
+ },
+
+ 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.
+ sizeOffsets = ComputedStyle.sizeOffsets[prop],
+ value = '';
+
+ // IE pixelWidth incorrect for percent
+ // manually compute by subtracting padding and border from offset size
+ // NOTE: clientWidth/Height (size minus border) is 0 when current === AUTO so offsetHeight is used
+ // reverting to auto from auto causes position stacking issues (old impl)
+ if (current === AUTO || current.indexOf('%') > -1) {
+ value = el['offset' + capped];
+
+ if (sizeOffsets[0]) {
+ value -= ComputedStyle.getPixel(el, 'padding' + sizeOffsets[0]);
+ value -= ComputedStyle.getBorderWidth(el, 'border' + sizeOffsets[0] + 'Width', 1);
+ }
+
+ if (sizeOffsets[1]) {
+ value -= ComputedStyle.getPixel(el, 'padding' + sizeOffsets[1]);
+ value -= ComputedStyle.getBorderWidth(el, 'border' + sizeOffsets[1] + 'Width', 1);
+ }
+
+ } else { // use style.pixelWidth, etc. to convert to pixels
+ // need to map style.width to currentStyle (no currentStyle.pixelWidth)
+ if (!el.style[pixel] && !el.style[prop]) {
+ el.style[prop] = current;
+ }
+ value = el.style[pixel];
+
+ }
+ return value + PX;
+ },
+
+ borderMap: {
+ thin: '2px',
+ medium: '4px',
+ thick: '6px'
+ },
+
+ getBorderWidth: function(el, property, omitUnit) {
+ var unit = omitUnit ? '' : PX,
+ current = el.currentStyle[property];
+
+ if (current.indexOf(PX) < 0) { // look up keywords
+ if (ComputedStyle.borderMap[current]) {
+ current = ComputedStyle.borderMap[current];
+ } else {
+ Y.log('borderWidth computing not implemented', 'warn', 'dom-ie-style');
+ }
+ }
+ return (omitUnit) ? parseFloat(current) : current;
+ },
+
+ 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
+try {
+ 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
+ }
+ }
+ }
+ };
+ }
+} catch(e) {
+ Y.log('document.documentElement.filters error (activeX disabled)', 'warn', 'dom-style');
+}
+
+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) {
+ var floatVal = parseFloat(val);
+ if (isNaN(floatVal) || floatVal >= 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) {
+ var floatVal = parseFloat(val);
+ if (isNaN(floatVal) || floatVal >= 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_WIDTH] = 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);
+