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YUI.add('dom-style-ie', function (Y, NAME) {

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',

    documentElement = Y.config.doc.documentElement,

    testFeature = Y.Features.test,

    addFeature = Y.Features.add,

    // 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,

    isIE8 = (Y.UA.ie >= 8),

    _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.

                pixel = 'pixel' + capped,                               // "pixelWidth", "pixelTop", etc.

                sizeOffsets = ComputedStyle.sizeOffsets[prop],

                mode = el.ownerDocument.compatMode,

                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 (mode !== 'BackCompat') {

                    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: (isIE8) ? '1px' : '2px',

            medium: (isIE8) ? '3px': '4px',

            thick: (isIE8) ? '5px' : '6px'

        },

        getBorderWidth: function(el, property, omitUnit) {

            var current = el.currentStyle[property];

            if (current.indexOf(PX) < 0) { // look up keywords if a border exists

                if (ComputedStyle.borderMap[current] &&

                        el.currentStyle.borderStyle !== 'none') {

                    current = ComputedStyle.borderMap[current];

                } else { // otherwise no border (default is "medium")

                    current = 0;

                }

            }

            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 = {};

addFeature('style', 'computedStyle', {

    test: function() {

        return 'getComputedStyle' in Y.config.win;

    }

});

addFeature('style', 'opacity', {

    test: function() {

        return 'opacity' in documentElement.style;

    }

});

addFeature('style', 'filter', {

    test: function() {

        return 'filters' in documentElement;

    }

});

// use alpha filter for IE opacity

if (!testFeature('style', 'opacity') && testFeature('style', 'filter')) {

    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) {

                }

            }

            return val / 100;

        },

        set: function(node, val, style) {

            var current,

                styleObj = _getStyleObj(node),

                currentFilter = styleObj[FILTER];

            style = style || node.style;

            if (val === '') { // normalize inline style behavior

                current = (OPACITY in styleObj) ? styleObj[OPACITY] : 1; // revert to original opacity

                val = current;

            }

            if (typeof currentFilter === 'string') { // in case not appended

                style[FILTER] = currentFilter.replace(/alpha([^)]*\))/gi, '') +

                        ((val <= 1) ? 'alpha(' + OPACITY + '=' + val * 100 + ')' : '');

                if (!style[FILTER]) {

                    style.removeAttribute(FILTER);

                }

                if (!styleObj[HAS_LAYOUT]) {

                    style.zoom = 1; // needs layout

                }

            }

        }

    };

}

try {

    Y.config.doc.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 (floatVal >= 0 || val === 'auto' || val === '') {

                style.height = val;

            } else {

            }

        }

    };

    Y.DOM.CUSTOM_STYLES.width = {

        set: function(node, val, style) {

            var floatVal = parseFloat(val);

            if (floatVal >= 0 || val === 'auto' || val === '') {

                style.width = val;

            } else {

            }

        }

    };

}

if (!testFeature('style', 'computedStyle')) {

    // 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;

    Y.DOM[GET_COMPUTED_STYLE] = ComputedStyle.get;

    Y.namespace('DOM.IE');

    Y.DOM.IE.COMPUTED = IEComputed;

    Y.DOM.IE.ComputedStyle = ComputedStyle;

}

}, '3.18.1', {"requires": ["dom-style", "color-base"]});