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- /*
- Copyright (c) 2010, Yahoo! Inc. All rights reserved.
- Code licensed under the BSD License:
- http://developer.yahoo.com/yui/license.html
- version: 3.4.0
- build: nightly
- */
- YUI.add('dom-style-ie', function(Y) {
-
- (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 = 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.
- offset = 'offset' + capped, // "offsetWidth", "offsetTop", 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 unit = omitUnit ? '' : PX,
- 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) {
- Y.log('getStyle: IE opacity filter not found; returning 1', 'warn', 'dom-style');
- }
- }
- 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.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 (floatVal >= 0 || val === 'auto' || val === '') {
- style.width = val;
- } else {
- Y.log('invalid style value for width: ' + val, 'warn', 'dom-style');
- }
- }
- };
- }
-
- 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;
- }
-
- })(Y);
-
-
- }, '3.4.0' ,{requires:['dom-style']});
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