/*
PIE: CSS3 rendering for IE
Version 2.0beta1
http://css3pie.com
Dual-licensed for use under the Apache License Version 2.0 or the General Public License (GPL) Version 2.
*/
(function( win, doc ) {
var PIE = win[ 'PIE' ] || ( win[ 'PIE' ] = {} );
/**
* Simple utility for merging objects
* @param {Object} obj1 The main object into which all others will be merged
* @param {...Object} var_args Other objects which will be merged into the first, in order
*/
PIE.merge = function( obj1 ) {
var i, len, p, objN, args = arguments;
for( i = 1, len = args.length; i < len; i++ ) {
objN = args[i];
for( p in objN ) {
if( objN.hasOwnProperty( p ) ) {
obj1[ p ] = objN[ p ];
}
}
}
return obj1;
};
PIE.merge(PIE, {
// Constants
CSS_PREFIX: '-pie-',
STYLE_PREFIX: 'Pie',
CLASS_PREFIX: 'pie_',
tableCellTags: {
'TD': 1,
'TH': 1
},
/**
* Lookup table of elements which cannot take custom children.
*/
childlessElements: {
'TABLE':1,
'THEAD':1,
'TBODY':1,
'TFOOT':1,
'TR':1,
'INPUT':1,
'TEXTAREA':1,
'SELECT':1,
'OPTION':1,
'IMG':1,
'HR':1
},
/**
* Elements that can receive user focus
*/
focusableElements: {
'A':1,
'INPUT':1,
'TEXTAREA':1,
'SELECT':1,
'BUTTON':1
},
/**
* Values of the type attribute for input elements displayed as buttons
*/
inputButtonTypes: {
'submit':1,
'button':1,
'reset':1
},
emptyFn: function() {}
});
// Force the background cache to be used. No reason it shouldn't be.
try {
doc.execCommand( 'BackgroundImageCache', false, true );
} catch(e) {}
(function() {
/*
* IE version detection approach by James Padolsey, with modifications -- from
* http://james.padolsey.com/javascript/detect-ie-in-js-using-conditional-comments/
*/
var ieVersion = 4,
div = doc.createElement('div'),
all = div.getElementsByTagName('i'),
shape;
while (
div.innerHTML = '',
all[0]
) {}
PIE.ieVersion = ieVersion;
// Detect IE6
if( ieVersion === 6 ) {
// IE6 can't access properties with leading dash, but can without it.
PIE.CSS_PREFIX = PIE.CSS_PREFIX.replace( /^-/, '' );
}
PIE.ieDocMode = doc.documentMode || PIE.ieVersion;
// Detect VML support (a small number of IE installs don't have a working VML engine)
div.innerHTML = '';
shape = div.firstChild;
shape.style['behavior'] = 'url(#default#VML)';
PIE.supportsVML = (typeof shape['adj'] === "object");
})();
/**
* Utility functions
*/
(function() {
var idNum = 0,
imageSizes = {};
PIE.Util = {
/**
* Generate and return a unique ID for a given object. The generated ID is stored
* as a property of the object for future reuse. For DOM Elements, don't use this
* but use the IE-native uniqueID property instead.
* @param {Object} obj
*/
getUID: function( obj ) {
return obj && obj[ '_pieId' ] || ( obj[ '_pieId' ] = '_' + idNum++ );
},
/**
* Execute a callback function, passing it the dimensions of a given image once
* they are known.
* @param {string} src The source URL of the image
* @param {function({w:number, h:number})} func The callback function to be called once the image dimensions are known
* @param {Object} ctx A context object which will be used as the 'this' value within the executed callback function
*/
withImageSize: function( src, func, ctx ) {
var size = imageSizes[ src ], img, queue;
if( size ) {
// If we have a queue, add to it
if( Object.prototype.toString.call( size ) === '[object Array]' ) {
size.push( [ func, ctx ] );
}
// Already have the size cached, call func right away
else {
func.call( ctx, size );
}
} else {
queue = imageSizes[ src ] = [ [ func, ctx ] ]; //create queue
img = new Image();
img.onload = function() {
size = imageSizes[ src ] = { w: img.width, h: img.height };
for( var i = 0, len = queue.length; i < len; i++ ) {
queue[ i ][ 0 ].call( queue[ i ][ 1 ], size );
}
img.onload = null;
};
img.src = src;
}
}
};
})();/**
* Utility functions for handling gradients
*/
PIE.GradientUtil = {
toSideAngles: {
'top': 0,
'right': 90,
'bottom': 180,
'left': 270
},
getGradientMetrics: function( el, width, height, gradientInfo ) {
var angle = gradientInfo.angle,
toPos = gradientInfo.gradientTo,
dX, dY,
endPoint,
startX, startY,
endX, endY;
// If an angle was specified, just use it
if (angle) {
angle = angle.degrees();
}
// If a to-position was specified, find the appropriate angle for it
else if (toPos) {
// To a corner; find the adjacent corners and use the angle perpendicular to them
if (toPos[1]) {
dX = ( toPos[0] == 'top' || toPos[1] == 'top' ) ? width : -width;
dY = ( toPos[0] == 'left' || toPos[1] == 'left' ) ? -height : height;
angle = Math.atan2(dY, dX) * 180 / Math.PI;
}
// To a side; map to a vertical/horizontal angle
else {
angle = this.toSideAngles[toPos[0]];
}
}
// Neither specified; default is top to bottom
else {
angle = 180;
}
// Normalize the angle to a value between [0, 360)
while( angle < 0 ) {
angle += 360;
}
angle = angle % 360;
// Find the end point of the gradient line, extending the angle from the center point
// to where it intersects the perpendicular line passing through the nearest corner.
endPoint = PIE.GradientUtil.perpendicularIntersect(width / 2, height / 2, angle,
( angle >= 180 ? 0 : width ), ( angle < 90 || angle > 270 ? 0 : height )
);
endX = endPoint[0];
endY = endPoint[1];
startX = width - endX;
startY = height - endY;
return {
angle: angle,
endX: endX,
endY: endY,
startX: startX,
startY: startY,
lineLength: PIE.GradientUtil.distance( startX, startY, endX, endY )
};
},
/**
* Find the point along a given line (defined by a starting point and an angle), at which
* that line is intersected by a perpendicular line extending through another point.
* @param x1 - x coord of the starting point
* @param y1 - y coord of the starting point
* @param angle - angle of the line extending from the starting point (in degrees)
* @param x2 - x coord of point along the perpendicular line
* @param y2 - y coord of point along the perpendicular line
* @return [ x, y ]
*/
perpendicularIntersect: function( x1, y1, angle, x2, y2 ) {
// Handle straight vertical and horizontal angles, for performance and to avoid
// divide-by-zero errors.
if( angle === 0 || angle === 180 ) {
return [ x1, y2 ];
}
else if( angle === 90 || angle === 270 ) {
return [ x2, y1 ];
}
else {
// General approach: determine the Ax+By=C formula for each line (the slope of the second
// line is the negative inverse of the first) and then solve for where both formulas have
// the same x/y values.
var a1 = Math.tan( ( angle - 90 ) * Math.PI / 180 ),
c1 = a1 * x1 - y1,
a2 = -1 / a1,
c2 = a2 * x2 - y2,
d = a2 - a1,
endX = ( c2 - c1 ) / d,
endY = ( a1 * c2 - a2 * c1 ) / d;
return [ endX, endY ];
}
},
/**
* Find the distance between two points
* @param {Number} p1x
* @param {Number} p1y
* @param {Number} p2x
* @param {Number} p2y
* @return {Number} the distance
*/
distance: function( p1x, p1y, p2x, p2y ) {
var dx = p2x - p1x,
dy = p2y - p1y;
return Math.abs(
dx === 0 ? dy :
dy === 0 ? dx :
Math.sqrt( dx * dx + dy * dy )
);
}
};/**
*
*/
PIE.Observable = function() {
/**
* List of registered observer functions
*/
this.observers = [];
/**
* Hash of function ids to their position in the observers list, for fast lookup
*/
this.indexes = {};
};
PIE.Observable.prototype = {
observe: function( fn ) {
var id = PIE.Util.getUID( fn ),
indexes = this.indexes,
observers = this.observers;
if( !( id in indexes ) ) {
indexes[ id ] = observers.length;
observers.push( fn );
}
},
unobserve: function( fn ) {
var id = PIE.Util.getUID( fn ),
indexes = this.indexes;
if( id && id in indexes ) {
delete this.observers[ indexes[ id ] ];
delete indexes[ id ];
}
},
fire: function() {
var o = this.observers,
i = o.length;
while( i-- ) {
o[ i ] && o[ i ]();
}
}
};/*
* Simple heartbeat timer - this is a brute-force workaround for syncing issues caused by IE not
* always firing the onmove and onresize events when elements are moved or resized. We check a few
* times every second to make sure the elements have the correct position and size. See Element.js
* which adds heartbeat listeners based on the custom -pie-poll flag, which defaults to true in IE8-9
* and false elsewhere.
*/
PIE.Heartbeat = new PIE.Observable();
PIE.Heartbeat.run = function() {
var me = this,
interval;
if( !me.running ) {
interval = doc.documentElement.currentStyle.getAttribute( PIE.CSS_PREFIX + 'poll-interval' ) || 250;
(function beat() {
me.fire();
setTimeout(beat, interval);
})();
me.running = 1;
}
};
/**
* Create an observable listener for the onunload event
*/
(function() {
PIE.OnUnload = new PIE.Observable();
function handleUnload() {
PIE.OnUnload.fire();
win.detachEvent( 'onunload', handleUnload );
win[ 'PIE' ] = null;
}
win.attachEvent( 'onunload', handleUnload );
/**
* Attach an event which automatically gets detached onunload
*/
PIE.OnUnload.attachManagedEvent = function( target, name, handler ) {
target.attachEvent( name, handler );
this.observe( function() {
target.detachEvent( name, handler );
} );
};
})()/**
* Create a single observable listener for window resize events.
*/
PIE.OnResize = new PIE.Observable();
PIE.OnUnload.attachManagedEvent( win, 'onresize', function() { PIE.OnResize.fire(); } );
/**
* Create a single observable listener for scroll events. Used for lazy loading based
* on the viewport, and for fixed position backgrounds.
*/
(function() {
PIE.OnScroll = new PIE.Observable();
function scrolled() {
PIE.OnScroll.fire();
}
PIE.OnUnload.attachManagedEvent( win, 'onscroll', scrolled );
PIE.OnResize.observe( scrolled );
})();
/**
* Create a single observable listener for document mouseup events.
*/
PIE.OnMouseup = new PIE.Observable();
PIE.OnUnload.attachManagedEvent( doc, 'onmouseup', function() { PIE.OnMouseup.fire(); } );
/**
* Wrapper for length and percentage style values. The value is immutable. A singleton instance per unique
* value is returned from PIE.getLength() - always use that instead of instantiating directly.
* @constructor
* @param {string} val The CSS string representing the length. It is assumed that this will already have
* been validated as a valid length or percentage syntax.
*/
PIE.Length = (function() {
var lengthCalcEl = doc.createElement( 'length-calc' ),
parent = doc.body || doc.documentElement,
s = lengthCalcEl.style,
conversions = {},
units = [ 'mm', 'cm', 'in', 'pt', 'pc' ],
i = units.length,
instances = {};
s.position = 'absolute';
s.top = s.left = '-9999px';
parent.appendChild( lengthCalcEl );
while( i-- ) {
s.width = '100' + units[i];
conversions[ units[i] ] = lengthCalcEl.offsetWidth / 100;
}
parent.removeChild( lengthCalcEl );
// All calcs from here on will use 1em
s.width = '1em';
function Length( val ) {
this.val = val;
}
Length.prototype = {
/**
* Regular expression for matching the length unit
* @private
*/
unitRE: /(px|em|ex|mm|cm|in|pt|pc|%)$/,
/**
* Get the numeric value of the length
* @return {number} The value
*/
getNumber: function() {
var num = this.num,
UNDEF;
if( num === UNDEF ) {
num = this.num = parseFloat( this.val );
}
return num;
},
/**
* Get the unit of the length
* @return {string} The unit
*/
getUnit: function() {
var unit = this.unit,
m;
if( !unit ) {
m = this.val.match( this.unitRE );
unit = this.unit = ( m && m[0] ) || 'px';
}
return unit;
},
/**
* Determine whether this is a percentage length value
* @return {boolean}
*/
isPercentage: function() {
return this.getUnit() === '%';
},
/**
* Resolve this length into a number of pixels.
* @param {Element} el - the context element, used to resolve font-relative values
* @param {(function():number|number)=} pct100 - the number of pixels that equal a 100% percentage. This can be either a number or a
* function which will be called to return the number.
*/
pixels: function( el, pct100 ) {
var num = this.getNumber(),
unit = this.getUnit();
switch( unit ) {
case "px":
return num;
case "%":
return num * ( typeof pct100 === 'function' ? pct100() : pct100 ) / 100;
case "em":
return num * this.getEmPixels( el );
case "ex":
return num * this.getEmPixels( el ) / 2;
default:
return num * conversions[ unit ];
}
},
/**
* The em and ex units are relative to the font-size of the current element,
* however if the font-size is set using non-pixel units then we get that value
* rather than a pixel conversion. To get around this, we keep a floating element
* with width:1em which we insert into the target element and then read its offsetWidth.
* For elements that won't accept a child we insert into the parent node and perform
* additional calculation. If the font-size *is* specified in pixels, then we use that
* directly to avoid the expensive DOM manipulation.
* @param {Element} el
* @return {number}
*/
getEmPixels: function( el ) {
var fs = el.currentStyle.fontSize,
px, parent, me;
if( fs.indexOf( 'px' ) > 0 ) {
return parseFloat( fs );
}
else if( el.tagName in PIE.childlessElements ) {
me = this;
parent = el.parentNode;
return PIE.getLength( fs ).pixels( parent, function() {
return me.getEmPixels( parent );
} );
}
else {
el.appendChild( lengthCalcEl );
px = lengthCalcEl.offsetWidth;
if( lengthCalcEl.parentNode === el ) { //not sure how this could be false but it sometimes is
el.removeChild( lengthCalcEl );
}
return px;
}
}
};
/**
* Convert a pixel length into a point length
*/
Length.pxToPt = function( px ) {
return px / conversions[ 'pt' ];
};
/**
* Retrieve a PIE.Length instance for the given value. A shared singleton instance is returned for each unique value.
* @param {string} val The CSS string representing the length. It is assumed that this will already have
* been validated as a valid length or percentage syntax.
*/
PIE.getLength = function( val ) {
return instances[ val ] || ( instances[ val ] = new Length( val ) );
};
return Length;
})();
/**
* Wrapper for a CSS3 bg-position value. Takes up to 2 position keywords and 2 lengths/percentages.
* @constructor
* @param {Array.} tokens The tokens making up the background position value.
*/
PIE.BgPosition = (function() {
var length_fifty = PIE.getLength( '50%' ),
vert_idents = { 'top': 1, 'center': 1, 'bottom': 1 },
horiz_idents = { 'left': 1, 'center': 1, 'right': 1 };
function BgPosition( tokens ) {
this.tokens = tokens;
}
BgPosition.prototype = {
/**
* Normalize the values into the form:
* [ xOffsetSide, xOffsetLength, yOffsetSide, yOffsetLength ]
* where: xOffsetSide is either 'left' or 'right',
* yOffsetSide is either 'top' or 'bottom',
* and x/yOffsetLength are both PIE.Length objects.
* @return {Array}
*/
getValues: function() {
if( !this._values ) {
var tokens = this.tokens,
len = tokens.length,
Tokenizer = PIE.Tokenizer,
identType = Tokenizer.Type,
length_zero = PIE.getLength( '0' ),
type_ident = identType.IDENT,
type_length = identType.LENGTH,
type_percent = identType.PERCENT,
type, value,
vals = [ 'left', length_zero, 'top', length_zero ];
// If only one value, the second is assumed to be 'center'
if( len === 1 ) {
tokens.push( new Tokenizer.Token( type_ident, 'center' ) );
len++;
}
// Two values - CSS2
if( len === 2 ) {
// If both idents, they can appear in either order, so switch them if needed
if( type_ident & ( tokens[0].tokenType | tokens[1].tokenType ) &&
tokens[0].tokenValue in vert_idents && tokens[1].tokenValue in horiz_idents ) {
tokens.push( tokens.shift() );
}
if( tokens[0].tokenType & type_ident ) {
if( tokens[0].tokenValue === 'center' ) {
vals[1] = length_fifty;
} else {
vals[0] = tokens[0].tokenValue;
}
}
else if( tokens[0].isLengthOrPercent() ) {
vals[1] = PIE.getLength( tokens[0].tokenValue );
}
if( tokens[1].tokenType & type_ident ) {
if( tokens[1].tokenValue === 'center' ) {
vals[3] = length_fifty;
} else {
vals[2] = tokens[1].tokenValue;
}
}
else if( tokens[1].isLengthOrPercent() ) {
vals[3] = PIE.getLength( tokens[1].tokenValue );
}
}
// Three or four values - CSS3
else {
// TODO
}
this._values = vals;
}
return this._values;
},
/**
* Find the coordinates of the background image from the upper-left corner of the background area.
* Note that these coordinate values are not rounded.
* @param {Element} el
* @param {number} width - the width for percentages (background area width minus image width)
* @param {number} height - the height for percentages (background area height minus image height)
* @return {Object} { x: Number, y: Number }
*/
coords: function( el, width, height ) {
var vals = this.getValues(),
pxX = vals[1].pixels( el, width ),
pxY = vals[3].pixels( el, height );
return {
x: vals[0] === 'right' ? width - pxX : pxX,
y: vals[2] === 'bottom' ? height - pxY : pxY
};
}
};
return BgPosition;
})();
/**
* Wrapper for a CSS3 background-size value.
* @constructor
* @param {String|PIE.Length} w The width parameter
* @param {String|PIE.Length} h The height parameter, if any
*/
PIE.BgSize = (function() {
var CONTAIN = 'contain',
COVER = 'cover',
AUTO = 'auto';
function BgSize( w, h ) {
this.w = w;
this.h = h;
}
BgSize.prototype = {
pixels: function( el, areaW, areaH, imgW, imgH ) {
var me = this,
w = me.w,
h = me.h,
areaRatio = areaW / areaH,
imgRatio = imgW / imgH;
if ( w === CONTAIN ) {
w = imgRatio > areaRatio ? areaW : areaH * imgRatio;
h = imgRatio > areaRatio ? areaW / imgRatio : areaH;
}
else if ( w === COVER ) {
w = imgRatio < areaRatio ? areaW : areaH * imgRatio;
h = imgRatio < areaRatio ? areaW / imgRatio : areaH;
}
else if ( w === AUTO ) {
h = ( h === AUTO ? imgH : h.pixels( el, areaH ) );
w = h * imgRatio;
}
else {
w = w.pixels( el, areaW );
h = ( h === AUTO ? w / imgRatio : h.pixels( el, areaH ) );
}
return { w: w, h: h };
}
};
BgSize.DEFAULT = new BgSize( AUTO, AUTO );
return BgSize;
})();
/**
* Wrapper for angle values; handles conversion to degrees from all allowed angle units
* @constructor
* @param {string} val The raw CSS value for the angle. It is assumed it has been pre-validated.
*/
PIE.Angle = (function() {
function Angle( val ) {
this.val = val;
}
Angle.prototype = {
unitRE: /[a-z]+$/i,
/**
* @return {string} The unit of the angle value
*/
getUnit: function() {
return this._unit || ( this._unit = this.val.match( this.unitRE )[0].toLowerCase() );
},
/**
* Get the numeric value of the angle in degrees.
* @return {number} The degrees value
*/
degrees: function() {
var deg = this._deg, u, n;
if( deg === undefined ) {
u = this.getUnit();
n = parseFloat( this.val, 10 );
deg = this._deg = ( u === 'deg' ? n : u === 'rad' ? n / Math.PI * 180 : u === 'grad' ? n / 400 * 360 : u === 'turn' ? n * 360 : 0 );
}
return deg;
}
};
return Angle;
})();/**
* Abstraction for colors values. Allows detection of rgba values. A singleton instance per unique
* value is returned from PIE.getColor() - always use that instead of instantiating directly.
* @constructor
* @param {string} val The raw CSS string value for the color
*/
PIE.Color = (function() {
/*
* hsl2rgb from http://codingforums.com/showthread.php?t=11156
* code by Jason Karl Davis (http://www.jasonkarldavis.com)
* swiped from cssSandpaper by Zoltan Hawryluk (http://www.useragentman.com/blog/csssandpaper-a-css3-javascript-library/)
* modified for formatting and size optimizations
*/
function hsl2rgb( h, s, l ) {
var m1, m2, r, g, b,
round = Math.round;
s /= 100;
l /= 100;
if ( !s ) { r = g = b = l * 255; }
else {
if ( l <= 0.5 ) { m2 = l * ( s + 1 ); }
else { m2 = l + s - l * s; }
m1 = l * 2 - m2;
h = ( h % 360 ) / 360;
r = hueToRgb( m1, m2, h + 1/3 );
g = hueToRgb( m1, m2, h );
b = hueToRgb( m1, m2, h - 1/3 );
}
return { r: round( r ), g: round( g ), b: round( b ) };
}
function hueToRgb( m1, m2, hue ) {
var v;
if ( hue < 0 ) { hue += 1; }
else if ( hue > 1 ) { hue -= 1; }
if ( 6 * hue < 1 ) { v = m1 + ( m2 - m1 ) * hue * 6; }
else if ( 2 * hue < 1 ) { v = m2; }
else if ( 3 * hue < 2 ) { v = m1 + ( m2 - m1 ) * ( 2/3 - hue ) * 6; }
else { v = m1; }
return 255 * v;
}
var instances = {};
function Color( val ) {
this.val = val;
}
/**
* Regular expression for matching rgba colors and extracting their components
* @type {RegExp}
*/
Color.rgbOrRgbaRE = /\s*rgba?\(\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,\s*(\d{1,3})\s*(,\s*(\d+|\d*\.\d+))?\s*\)\s*/;
Color.hslOrHslaRE = /\s*hsla?\(\s*(\d*\.?\d+)\s*,\s*(\d{1,3})%\s*,\s*(\d{1,3})%\s*(,\s*(\d+|\d*\.\d+))?\s*\)\s*/;
/**
* Hash of color keyword names to their corresponding hex values. Encoded for
* small size and expanded into a hash on startup.
*/
Color.names = {};
var names = 'black|0|navy|3k|darkblue|b|mediumblue|1u|blue|1e|darkgreen|jk1|green|5j4|teal|3k|darkcyan|26j|deepskyblue|ad0|darkturquoise|2xe|mediumspringgreen|8nd|lime|va|springgreen|3j|aqua|3k|cyan|0|midnightblue|xunl|dodgerblue|7ogf|lightseagreen|2zsb|forestgreen|2lbs|seagreen|guut|darkslategray|12pk|limegreen|4wkj|mediumseagreen|dwlb|turquoise|5v8f|royalblue|r2p|steelblue|75qr|darkslateblue|2fh3|mediumturquoise|ta9|indigo|32d2|darkolivegreen|emr1|cadetblue|ebu9|cornflowerblue|6z4d|mediumaquamarine|3459|dimgray|3nwf|slateblue|1bok|olivedrab|1opi|slategray|6y5p|lightslategray|9vk9|mediumslateblue|5g0l|lawngreen|27ma|chartreuse|48ao|aquamarine|5w|maroon|18|purple|3k|olive|p6o|gray|3k|lightslateblue|5j7j|skyblue|4q98|lightskyblue|f|blueviolet|3bhk|darkred|15we|darkmagenta|3v|saddlebrown|djc|darkseagreen|69vg|lightgreen|1og1|mediumpurple|3ivc|darkviolet|sfv|palegreen|6zt1|darkorchid|awk|yellowgreen|292e|sienna|7r3v|brown|6sxp|darkgray|6bgf|lightblue|5vlp|greenyellow|7k9|paleturquoise|2pxb|lightsteelblue|169c|powderblue|5jc|firebrick|1rgc|darkgoldenrod|8z55|mediumorchid|2jm0|rosybrown|34jg|darkkhaki|1mfw|silver|49jp|mediumvioletred|8w5h|indianred|8tef|peru|82r|violetred|3ntd|feldspar|212d|chocolate|16eh|tan|ewe|lightgrey|1kqv|palevioletred|6h8g|metle|fnp|orchid|2dj2|goldenrod|abu|crimson|20ik|gainsboro|13mo|plum|12pt|burlywood|1j8q|lightcyan|3794|lavender|8agr|darksalmon|3rsw|violet|6wz8|palegoldenrod|k3g|lightcoral|28k6|khaki|k5o|aliceblue|3n7|honeydew|1dd|azure|f|sandybrown|5469|wheat|1q37|beige|4kp|whitesmoke|p|mintcream|1z9|ghostwhite|46bp|salmon|25bn|antiquewhite|l7p|linen|zz|lightgoldenrodyellow|1yk|oldlace|46qc|red|1gka|magenta|73|fuchsia|0|deeppink|3v8|orangered|9kd|tomato|5zb|hotpink|19p|coral|49o|darkorange|2i8|lightsalmon|41m|orange|w6|lightpink|3i9|pink|1ze|gold|4dx|peachpuff|qh|navajowhite|s4|moccasin|16w|bisque|f|mistyrose|t|blanchedalmond|1d8|papayawhip|so|lavenderblush|80|seashell|zd|cornsilk|ku|lemonchiffon|dt|floralwhite|z|snow|a|yellow|sm|lightyellow|68|ivory|g|white|f'.split('|'),
i = 0, len = names.length, color = 0, hexColor;
for(; i < len; i += 2) {
color += parseInt(names[i + 1], 36);
hexColor = color.toString(16);
Color.names[names[i]] = '#000000'.slice(0, -hexColor.length) + hexColor;
}
Color.prototype = {
/**
* @private
*/
parse: function() {
if( !this._color ) {
var me = this,
color = me.val,
alpha, vLower, m, rgb;
// RGB or RGBA colors
if( m = color.match( Color.rgbOrRgbaRE ) ) {
color = me.rgbToHex( +m[1], +m[2], +m[3] );
alpha = m[5] ? +m[5] : 1;
}
// HSL or HSLA colors
else if( m = color.match( Color.hslOrHslaRE ) ) {
rgb = hsl2rgb( m[1], m[2], m[3] );
color = me.rgbToHex( rgb.r, rgb.g, rgb.b );
alpha = m[5] ? +m[5] : 1;
}
else {
if( Color.names.hasOwnProperty( vLower = color.toLowerCase() ) ) {
color = Color.names[vLower];
}
alpha = ( color === 'transparent' ? 0 : 1 );
}
me._color = color;
me._alpha = alpha;
}
},
/**
* Converts RGB color channels to a hex value string
*/
rgbToHex: function( r, g, b ) {
return '#' + ( r < 16 ? '0' : '' ) + r.toString( 16 ) +
( g < 16 ? '0' : '' ) + g.toString( 16 ) +
( b < 16 ? '0' : '' ) + b.toString( 16 );
},
/**
* Retrieve the value of the color in a format usable by IE natively. This will be the same as
* the raw input value, except for rgb(a) and hsl(a) values which will be converted to a hex value.
* @param {Element} el The context element, used to get 'currentColor' keyword value.
* @return {string} Color value
*/
colorValue: function( el ) {
this.parse();
return this._color === 'currentColor' ? PIE.getColor( el.currentStyle.color ).colorValue( el ) : this._color;
},
/**
* Retrieve the value of the color in a normalized six-digit hex format.
* @param el
*/
hexValue: function( el ) {
var color = this.colorValue( el );
// At this point the color should be either a 3- or 6-digit hex value, or the string "transparent".
function ch( i ) {
return color.charAt( i );
}
// Fudge transparent to black - should be ignored anyway since its alpha will be 0
if( color === 'transparent' ) {
color = '#000';
}
// Expand 3-digit to 6-digit hex
if( ch(0) === '#' && color.length === 4 ) {
color = '#' + ch(1) + ch(1) + ch(2) + ch(2) + ch(3) + ch(3);
}
return color;
},
/**
* Retrieve the alpha value of the color. Will be 1 for all values except for rgba values
* with an alpha component.
* @return {number} The alpha value, from 0 to 1.
*/
alpha: function() {
this.parse();
return this._alpha;
}
};
/**
* Retrieve a PIE.Color instance for the given value. A shared singleton instance is returned for each unique value.
* @param {string} val The CSS string representing the color. It is assumed that this will already have
* been validated as a valid color syntax.
*/
PIE.getColor = function(val) {
return instances[ val ] || ( instances[ val ] = new Color( val ) );
};
return Color;
})();/**
* A tokenizer for CSS value strings.
* @constructor
* @param {string} css The CSS value string
*/
PIE.Tokenizer = (function() {
function Tokenizer( css ) {
this.css = css;
this.ch = 0;
this.tokens = [];
this.tokenIndex = 0;
}
/**
* Enumeration of token type constants.
* @enum {number}
*/
var Type = Tokenizer.Type = {
ANGLE: 1,
CHARACTER: 2,
COLOR: 4,
DIMEN: 8,
FUNCTION: 16,
IDENT: 32,
LENGTH: 64,
NUMBER: 128,
OPERATOR: 256,
PERCENT: 512,
STRING: 1024,
URL: 2048
};
/**
* A single token
* @constructor
* @param {number} type The type of the token - see PIE.Tokenizer.Type
* @param {string} value The value of the token
*/
Tokenizer.Token = function( type, value ) {
this.tokenType = type;
this.tokenValue = value;
};
Tokenizer.Token.prototype = {
isLength: function() {
return this.tokenType & Type.LENGTH || ( this.tokenType & Type.NUMBER && this.tokenValue === '0' );
},
isLengthOrPercent: function() {
return this.isLength() || this.tokenType & Type.PERCENT;
}
};
Tokenizer.prototype = {
whitespace: /\s/,
number: /^[\+\-]?(\d*\.)?\d+/,
url: /^url\(\s*("([^"]*)"|'([^']*)'|([!#$%&*-~]*))\s*\)/i,
ident: /^\-?[_a-z][\w-]*/i,
string: /^("([^"]*)"|'([^']*)')/,
operator: /^[\/,]/,
hash: /^#[\w]+/,
hashColor: /^#([\da-f]{6}|[\da-f]{3})/i,
unitTypes: {
'px': Type.LENGTH, 'em': Type.LENGTH, 'ex': Type.LENGTH,
'mm': Type.LENGTH, 'cm': Type.LENGTH, 'in': Type.LENGTH,
'pt': Type.LENGTH, 'pc': Type.LENGTH,
'deg': Type.ANGLE, 'rad': Type.ANGLE, 'grad': Type.ANGLE
},
colorFunctions: {
'rgb': 1, 'rgba': 1, 'hsl': 1, 'hsla': 1
},
/**
* Advance to and return the next token in the CSS string. If the end of the CSS string has
* been reached, null will be returned.
* @param {boolean} forget - if true, the token will not be stored for the purposes of backtracking with prev().
* @return {PIE.Tokenizer.Token}
*/
next: function( forget ) {
var css, ch, firstChar, match, val,
me = this;
function newToken( type, value ) {
var tok = new Tokenizer.Token( type, value );
if( !forget ) {
me.tokens.push( tok );
me.tokenIndex++;
}
return tok;
}
function failure() {
me.tokenIndex++;
return null;
}
// In case we previously backed up, return the stored token in the next slot
if( this.tokenIndex < this.tokens.length ) {
return this.tokens[ this.tokenIndex++ ];
}
// Move past leading whitespace characters
while( this.whitespace.test( this.css.charAt( this.ch ) ) ) {
this.ch++;
}
if( this.ch >= this.css.length ) {
return failure();
}
ch = this.ch;
css = this.css.substring( this.ch );
firstChar = css.charAt( 0 );
switch( firstChar ) {
case '#':
if( match = css.match( this.hashColor ) ) {
this.ch += match[0].length;
return newToken( Type.COLOR, match[0] );
}
break;
case '"':
case "'":
if( match = css.match( this.string ) ) {
this.ch += match[0].length;
return newToken( Type.STRING, match[2] || match[3] || '' );
}
break;
case "/":
case ",":
this.ch++;
return newToken( Type.OPERATOR, firstChar );
case 'u':
if( match = css.match( this.url ) ) {
this.ch += match[0].length;
return newToken( Type.URL, match[2] || match[3] || match[4] || '' );
}
}
// Numbers and values starting with numbers
if( match = css.match( this.number ) ) {
val = match[0];
this.ch += val.length;
// Check if it is followed by a unit
if( css.charAt( val.length ) === '%' ) {
this.ch++;
return newToken( Type.PERCENT, val + '%' );
}
if( match = css.substring( val.length ).match( this.ident ) ) {
val += match[0];
this.ch += match[0].length;
return newToken( this.unitTypes[ match[0].toLowerCase() ] || Type.DIMEN, val );
}
// Plain ol' number
return newToken( Type.NUMBER, val );
}
// Identifiers
if( match = css.match( this.ident ) ) {
val = match[0];
this.ch += val.length;
// Named colors
if( val.toLowerCase() in PIE.Color.names || val === 'currentColor' || val === 'transparent' ) {
return newToken( Type.COLOR, val );
}
// Functions
if( css.charAt( val.length ) === '(' ) {
this.ch++;
// Color values in function format: rgb, rgba, hsl, hsla
if( val.toLowerCase() in this.colorFunctions ) {
function isNum( tok ) {
return tok && tok.tokenType & Type.NUMBER;
}
function isNumOrPct( tok ) {
return tok && ( tok.tokenType & ( Type.NUMBER | Type.PERCENT ) );
}
function isValue( tok, val ) {
return tok && tok.tokenValue === val;
}
function next() {
return me.next( 1 );
}
if( ( val.charAt(0) === 'r' ? isNumOrPct( next() ) : isNum( next() ) ) &&
isValue( next(), ',' ) &&
isNumOrPct( next() ) &&
isValue( next(), ',' ) &&
isNumOrPct( next() ) &&
( val === 'rgb' || val === 'hsa' || (
isValue( next(), ',' ) &&
isNum( next() )
) ) &&
isValue( next(), ')' ) ) {
return newToken( Type.COLOR, this.css.substring( ch, this.ch ) );
}
return failure();
}
return newToken( Type.FUNCTION, val );
}
// Other identifier
return newToken( Type.IDENT, val );
}
// Standalone character
this.ch++;
return newToken( Type.CHARACTER, firstChar );
},
/**
* Determine whether there is another token
* @return {boolean}
*/
hasNext: function() {
var next = this.next();
this.prev();
return !!next;
},
/**
* Back up and return the previous token
* @return {PIE.Tokenizer.Token}
*/
prev: function() {
return this.tokens[ this.tokenIndex-- - 2 ];
},
/**
* Retrieve all the tokens in the CSS string
* @return {Array.}
*/
all: function() {
while( this.next() ) {}
return this.tokens;
},
/**
* Return a list of tokens from the current position until the given function returns
* true. The final token will not be included in the list.
* @param {function():boolean} func - test function
* @param {boolean} require - if true, then if the end of the CSS string is reached
* before the test function returns true, null will be returned instead of the
* tokens that have been found so far.
* @return {Array.}
*/
until: function( func, require ) {
var list = [], t, hit;
while( t = this.next() ) {
if( func( t ) ) {
hit = true;
this.prev();
break;
}
list.push( t );
}
return require && !hit ? null : list;
}
};
return Tokenizer;
})();/**
* Handles calculating, caching, and detecting changes to size and position of the element.
* @constructor
* @param {Element} el the target element
*/
PIE.BoundsInfo = function( el ) {
this.targetElement = el;
};
PIE.BoundsInfo.prototype = {
_locked: 0,
/**
* Determines if the element's position has changed since the last update.
* TODO this does a simple getBoundingClientRect comparison for detecting the
* changes in position, which may not always be accurate; it's possible that
* an element will actually move relative to its positioning parent, but its position
* relative to the viewport will stay the same. Need to come up with a better way to
* track movement. The most accurate would be the same logic used in RootRenderer.updatePos()
* but that is a more expensive operation since it performs DOM walking, and we want this
* check to be as fast as possible. Perhaps introduce a -pie-* flag to trigger the slower
* but more accurate method?
*/
positionChanged: function() {
var last = this._lastBounds,
bounds;
return !last || ( ( bounds = this.getBounds() ) && ( last.x !== bounds.x || last.y !== bounds.y ) );
},
sizeChanged: function() {
var last = this._lastBounds,
bounds;
return !last || ( ( bounds = this.getBounds() ) && ( last.w !== bounds.w || last.h !== bounds.h ) );
},
getLiveBounds: function() {
var el = this.targetElement,
rect = el.getBoundingClientRect(),
isIE9 = PIE.ieDocMode === 9,
isIE7 = PIE.ieVersion === 7,
width = rect.right - rect.left;
return {
x: rect.left,
y: rect.top,
// In some cases scrolling the page will cause IE9 to report incorrect dimensions
// in the rect returned by getBoundingClientRect, so we must query offsetWidth/Height
// instead. Also IE7 is inconsistent in using logical vs. device pixels in measurements
// so we must calculate the ratio and use it in certain places as a position adjustment.
w: isIE9 || isIE7 ? el.offsetWidth : width,
h: isIE9 || isIE7 ? el.offsetHeight : rect.bottom - rect.top,
logicalZoomRatio: ( isIE7 && width ) ? el.offsetWidth / width : 1
};
},
getBounds: function() {
return this._locked ?
( this._lockedBounds || ( this._lockedBounds = this.getLiveBounds() ) ) :
this.getLiveBounds();
},
hasBeenQueried: function() {
return !!this._lastBounds;
},
lock: function() {
++this._locked;
},
unlock: function() {
if( !--this._locked ) {
if( this._lockedBounds ) this._lastBounds = this._lockedBounds;
this._lockedBounds = null;
}
}
};
(function() {
function cacheWhenLocked( fn ) {
var uid = PIE.Util.getUID( fn );
return function() {
if( this._locked ) {
var cache = this._lockedValues || ( this._lockedValues = {} );
return ( uid in cache ) ? cache[ uid ] : ( cache[ uid ] = fn.call( this ) );
} else {
return fn.call( this );
}
}
}
PIE.StyleInfoBase = {
_locked: 0,
/**
* Create a new StyleInfo class, with the standard constructor, and augmented by
* the StyleInfoBase's members.
* @param proto
*/
newStyleInfo: function( proto ) {
function StyleInfo( el ) {
this.targetElement = el;
this._lastCss = this.getCss();
}
PIE.merge( StyleInfo.prototype, PIE.StyleInfoBase, proto );
StyleInfo._propsCache = {};
return StyleInfo;
},
/**
* Get an object representation of the target CSS style, caching it for each unique
* CSS value string.
* @return {Object}
*/
getProps: function() {
var css = this.getCss(),
cache = this.constructor._propsCache;
return css ? ( css in cache ? cache[ css ] : ( cache[ css ] = this.parseCss( css ) ) ) : null;
},
/**
* Get the raw CSS value for the target style
* @return {string}
*/
getCss: cacheWhenLocked( function() {
var el = this.targetElement,
ctor = this.constructor,
s = el.style,
cs = el.currentStyle,
cssProp = this.cssProperty,
styleProp = this.styleProperty,
prefixedCssProp = ctor._prefixedCssProp || ( ctor._prefixedCssProp = PIE.CSS_PREFIX + cssProp ),
prefixedStyleProp = ctor._prefixedStyleProp || ( ctor._prefixedStyleProp = PIE.STYLE_PREFIX + styleProp.charAt(0).toUpperCase() + styleProp.substring(1) );
return s[ prefixedStyleProp ] || cs.getAttribute( prefixedCssProp ) || s[ styleProp ] || cs.getAttribute( cssProp );
} ),
/**
* Determine whether the target CSS style is active.
* @return {boolean}
*/
isActive: cacheWhenLocked( function() {
return !!this.getProps();
} ),
/**
* Determine whether the target CSS style has changed since the last time it was used.
* @return {boolean}
*/
changed: cacheWhenLocked( function() {
var currentCss = this.getCss(),
changed = currentCss !== this._lastCss;
this._lastCss = currentCss;
return changed;
} ),
cacheWhenLocked: cacheWhenLocked,
lock: function() {
++this._locked;
},
unlock: function() {
if( !--this._locked ) {
delete this._lockedValues;
}
}
};
})();/**
* Handles parsing, caching, and detecting changes to background (and -pie-background) CSS
* @constructor
* @param {Element} el the target element
*/
PIE.BackgroundStyleInfo = PIE.StyleInfoBase.newStyleInfo( {
cssProperty: PIE.CSS_PREFIX + 'background',
styleProperty: PIE.STYLE_PREFIX + 'Background',
attachIdents: { 'scroll':1, 'fixed':1, 'local':1 },
repeatIdents: { 'repeat-x':1, 'repeat-y':1, 'repeat':1, 'no-repeat':1 },
originAndClipIdents: { 'padding-box':1, 'border-box':1, 'content-box':1 },
positionIdents: { 'top':1, 'right':1, 'bottom':1, 'left':1, 'center':1 },
sizeIdents: { 'contain':1, 'cover':1 },
tbIdents: { 'top': 1, 'bottom': 1 },
lrIdents: { 'left': 1, 'right': 1 },
propertyNames: {
CLIP: 'backgroundClip',
COLOR: 'backgroundColor',
IMAGE: 'backgroundImage',
ORIGIN: 'backgroundOrigin',
POSITION: 'backgroundPosition',
REPEAT: 'backgroundRepeat',
SIZE: 'backgroundSize'
},
/**
* For background styles, we support the -pie-background property but fall back to the standard
* backround* properties. The reason we have to use the prefixed version is that IE natively
* parses the standard properties and if it sees something it doesn't know how to parse, for example
* multiple values or gradient definitions, it will throw that away and not make it available through
* currentStyle.
*
* Format of return object:
* {
* color: ,
* colorClip: <'border-box' | 'padding-box'>,
* bgImages: [
* {
* imgType: 'image',
* imgUrl: 'image.png',
* imgRepeat: <'no-repeat' | 'repeat-x' | 'repeat-y' | 'repeat'>,
* bgPosition: ,
* bgAttachment: <'scroll' | 'fixed' | 'local'>,
* bgOrigin: <'border-box' | 'padding-box' | 'content-box'>,
* bgClip: <'border-box' | 'padding-box'>,
* bgSize: ,
* origString: 'url(img.png) no-repeat top left'
* },
* {
* imgType: 'linear-gradient',
* gradientTo: [<'top' | 'bottom'>, <'left' | 'right'>?],
* angle: ,
* stops: [
* { color: , offset: },
* { color: , offset: }, ...
* ]
* }
* ]
* }
* @param {String} css
* @override
*/
parseCss: function( css ) {
var el = this.targetElement,
cs = el.currentStyle,
tokenizer, token, image,
tok_type = PIE.Tokenizer.Type,
type_operator = tok_type.OPERATOR,
type_ident = tok_type.IDENT,
type_color = tok_type.COLOR,
tokType, tokVal,
beginCharIndex = 0,
positionIdents = this.positionIdents,
gradient, stop, width, height, gradientTo, len, tbIdents, lrIdents,
props = { bgImages: [] };
function isBgPosToken( token ) {
return token && token.isLengthOrPercent() || ( token.tokenType & type_ident && token.tokenValue in positionIdents );
}
function sizeToken( token ) {
return token && ( ( token.isLengthOrPercent() && PIE.getLength( token.tokenValue ) ) || ( token.tokenValue === 'auto' && 'auto' ) );
}
// If the CSS3-specific -pie-background property is present, parse it
if( this.getCss3() ) {
tokenizer = new PIE.Tokenizer( css );
image = {};
while( token = tokenizer.next() ) {
tokType = token.tokenType;
tokVal = token.tokenValue;
if( !image.imgType && tokType & tok_type.FUNCTION && tokVal === 'linear-gradient' ) {
gradient = { stops: [], imgType: tokVal };
stop = {};
while( token = tokenizer.next() ) {
tokType = token.tokenType;
tokVal = token.tokenValue;
// If we reached the end of the function and had at least 2 stops, flush the info
if( tokType & tok_type.CHARACTER && tokVal === ')' ) {
if( stop.color ) {
gradient.stops.push( stop );
}
if( gradient.stops.length > 1 ) {
PIE.merge( image, gradient );
}
break;
}
// Color stop - must start with color
if( tokType & type_color ) {
// if we already have an angle/position, make sure that the previous token was a comma
if( gradient.angle || gradient.gradientTo ) {
token = tokenizer.prev();
if( token.tokenType !== type_operator ) {
break; //fail
}
tokenizer.next();
}
stop = {
color: PIE.getColor( tokVal )
};
// check for offset following color
token = tokenizer.next();
if( token.isLengthOrPercent() ) {
stop.offset = PIE.getLength( token.tokenValue );
} else {
tokenizer.prev();
}
}
// Angle - can only appear in first spot
else if( tokType & tok_type.ANGLE && !gradient.angle && !gradient.gradientTo && !stop.color && !gradient.stops.length ) {
gradient.angle = new PIE.Angle( token.tokenValue );
}
// "to " - can only appear in first spot
else if( tokType & tok_type.IDENT && tokVal === 'to' && !gradient.gradientTo && !gradient.angle && !stop.color && !gradient.stops.length ) {
tbIdents = this.tbIdents;
lrIdents = this.lrIdents;
gradientTo = tokenizer.until( function( t ) {
return !(t && t.tokenType & tok_type.IDENT && ( t.tokenValue in tbIdents || t.tokenValue in lrIdents ));
} );
len = gradientTo.length;
gradientTo = [ gradientTo[0] && gradientTo[0].tokenValue, gradientTo[1] && gradientTo[1].tokenValue ];
// bail unless there are 1 or 2 values, or if the 2 values are from the same pair of sides
if ( len < 1 || len > 2 || ( len > 1 && (
( gradientTo[0] in tbIdents && gradientTo[1] in tbIdents ) ||
( gradientTo[0] in lrIdents && gradientTo[1] in lrIdents )
) ) ) {
break;
}
gradient.gradientTo = gradientTo;
}
else if( tokType & type_operator && tokVal === ',' ) {
if( stop.color ) {
gradient.stops.push( stop );
stop = {};
}
}
else {
// Found something we didn't recognize; fail without adding image
break;
}
}
}
else if( !image.imgType && tokType & tok_type.URL ) {
image.imgUrl = tokVal;
image.imgType = 'image';
}
else if( isBgPosToken( token ) && !image.bgPosition ) {
tokenizer.prev();
image.bgPosition = new PIE.BgPosition(
tokenizer.until( function( t ) {
return !isBgPosToken( t );
}, false )
);
}
else if( tokType & type_ident ) {
if( tokVal in this.repeatIdents && !image.imgRepeat ) {
image.imgRepeat = tokVal;
}
else if( tokVal in this.originAndClipIdents && !image.bgOrigin ) {
image.bgOrigin = tokVal;
if( ( token = tokenizer.next() ) && ( token.tokenType & type_ident ) &&
token.tokenValue in this.originAndClipIdents ) {
image.bgClip = token.tokenValue;
} else {
image.bgClip = tokVal;
tokenizer.prev();
}
}
else if( tokVal in this.attachIdents && !image.bgAttachment ) {
image.bgAttachment = tokVal;
}
else {
return null;
}
}
else if( tokType & type_color && !props.color ) {
props.color = PIE.getColor( tokVal );
}
else if( tokType & type_operator && tokVal === '/' && !image.bgSize && image.bgPosition ) {
// background size
token = tokenizer.next();
if( token.tokenType & type_ident && token.tokenValue in this.sizeIdents ) {
image.bgSize = new PIE.BgSize( token.tokenValue );
}
else if( width = sizeToken( token ) ) {
height = sizeToken( tokenizer.next() );
if ( !height ) {
height = width;
tokenizer.prev();
}
image.bgSize = new PIE.BgSize( width, height );
}
else {
return null;
}
}
// new layer
else if( tokType & type_operator && tokVal === ',' && image.imgType ) {
image.origString = css.substring( beginCharIndex, tokenizer.ch - 1 );
beginCharIndex = tokenizer.ch;
props.bgImages.push( image );
image = {};
}
else {
// Found something unrecognized; chuck everything
return null;
}
}
// leftovers
if( image.imgType ) {
image.origString = css.substring( beginCharIndex );
props.bgImages.push( image );
}
props.colorClip = image.bgClip;
}
// Otherwise, use the standard background properties; let IE give us the values rather than parsing them
else {
this.withActualBg( PIE.ieDocMode < 9 ?
function() {
var propNames = this.propertyNames,
posX = cs[propNames.POSITION + 'X'],
posY = cs[propNames.POSITION + 'Y'],
img = cs[propNames.IMAGE],
color = cs[propNames.COLOR];
if( color !== 'transparent' ) {
props.color = PIE.getColor( color )
}
if( img !== 'none' ) {
props.bgImages = [ {
imgType: 'image',
imgUrl: new PIE.Tokenizer( img ).next().tokenValue,
imgRepeat: cs[propNames.REPEAT],
bgPosition: new PIE.BgPosition( new PIE.Tokenizer( posX + ' ' + posY ).all() )
} ];
}
} :
function() {
var propNames = this.propertyNames,
splitter = /\s*,\s*/,
images = cs[propNames.IMAGE].split( splitter ),
color = cs[propNames.COLOR],
repeats, positions, origins, clips, sizes, i, len, image, sizeParts;
if( color !== 'transparent' ) {
props.color = PIE.getColor( color )
}
len = images.length;
if( len && images[0] !== 'none' ) {
repeats = cs[propNames.REPEAT].split( splitter );
positions = cs[propNames.POSITION].split( splitter );
origins = cs[propNames.ORIGIN].split( splitter );
clips = cs[propNames.CLIP].split( splitter );
sizes = cs[propNames.SIZE].split( splitter );
props.bgImages = [];
for( i = 0; i < len; i++ ) {
image = images[ i ];
if( image && image !== 'none' ) {
sizeParts = sizes[i].split( ' ' );
props.bgImages.push( {
origString: image + ' ' + repeats[ i ] + ' ' + positions[ i ] + ' / ' + sizes[ i ] + ' ' +
origins[ i ] + ' ' + clips[ i ],
imgType: 'image',
imgUrl: new PIE.Tokenizer( image ).next().tokenValue,
imgRepeat: repeats[ i ],
bgPosition: new PIE.BgPosition( new PIE.Tokenizer( positions[ i ] ).all() ),
bgOrigin: origins[ i ],
bgClip: clips[ i ],
bgSize: new PIE.BgSize( sizeParts[ 0 ], sizeParts[ 1 ] )
} );
}
}
}
}
);
}
return ( props.color || props.bgImages[0] ) ? props : null;
},
/**
* Execute a function with the actual background styles (not overridden with runtimeStyle
* properties set by the renderers) available via currentStyle.
* @param fn
*/
withActualBg: function( fn ) {
var isIE9 = PIE.ieDocMode > 8,
propNames = this.propertyNames,
rs = this.targetElement.runtimeStyle,
rsImage = rs[propNames.IMAGE],
rsColor = rs[propNames.COLOR],
rsRepeat = rs[propNames.REPEAT],
rsClip, rsOrigin, rsSize, rsPosition, ret;
if( rsImage ) rs[propNames.IMAGE] = '';
if( rsColor ) rs[propNames.COLOR] = '';
if( rsRepeat ) rs[propNames.REPEAT] = '';
if( isIE9 ) {
rsClip = rs[propNames.CLIP];
rsOrigin = rs[propNames.ORIGIN];
rsPosition = rs[propNames.POSITION];
rsSize = rs[propNames.SIZE];
if( rsClip ) rs[propNames.CLIP] = '';
if( rsOrigin ) rs[propNames.ORIGIN] = '';
if( rsPosition ) rs[propNames.POSITION] = '';
if( rsSize ) rs[propNames.SIZE] = '';
}
ret = fn.call( this );
if( rsImage ) rs[propNames.IMAGE] = rsImage;
if( rsColor ) rs[propNames.COLOR] = rsColor;
if( rsRepeat ) rs[propNames.REPEAT] = rsRepeat;
if( isIE9 ) {
if( rsClip ) rs[propNames.CLIP] = rsClip;
if( rsOrigin ) rs[propNames.ORIGIN] = rsOrigin;
if( rsPosition ) rs[propNames.POSITION] = rsPosition;
if( rsSize ) rs[propNames.SIZE] = rsSize;
}
return ret;
},
getCss: PIE.StyleInfoBase.cacheWhenLocked( function() {
return this.getCss3() ||
this.withActualBg( function() {
var cs = this.targetElement.currentStyle,
propNames = this.propertyNames;
return cs[propNames.COLOR] + ' ' + cs[propNames.IMAGE] + ' ' + cs[propNames.REPEAT] + ' ' +
cs[propNames.POSITION + 'X'] + ' ' + cs[propNames.POSITION + 'Y'];
} );
} ),
getCss3: PIE.StyleInfoBase.cacheWhenLocked( function() {
var el = this.targetElement;
return el.style[ this.styleProperty ] || el.currentStyle.getAttribute( this.cssProperty );
} ),
/**
* For a given background-origin value, return the dimensions of the background area.
* @param {String} bgOrigin
* @param {PIE.BoundsInfo} boundsInfo
* @param {PIE.BorderStyleInfo} borderInfo
*/
getBgAreaSize: function( bgOrigin, boundsInfo, borderInfo, paddingInfo ) {
var el = this.targetElement,
bounds = boundsInfo.getBounds(),
w = bounds.w,
h = bounds.h,
borders, paddings;
if( bgOrigin !== 'border-box' ) {
borders = borderInfo.getProps();
if( borders && ( borders = borders.widths ) ) {
w -= borders[ 'l' ].pixels( el ) + borders[ 'l' ].pixels( el );
h -= borders[ 't' ].pixels( el ) + borders[ 'b' ].pixels( el );
}
}
if ( bgOrigin === 'content-box' ) {
paddings = paddingInfo.getProps();
if ( paddings ) {
w -= paddings[ 'l' ].pixels( el ) + paddings[ 'l' ].pixels( el );
h -= paddings[ 't' ].pixels( el ) + paddings[ 'b' ].pixels( el );
}
}
return { w: w, h: h };
},
/**
* Tests if style.PiePngFix or the -pie-png-fix property is set to true in IE6.
*/
isPngFix: function() {
var val = 0, el;
if( PIE.ieVersion < 7 ) {
el = this.targetElement;
val = ( '' + ( el.style[ PIE.STYLE_PREFIX + 'PngFix' ] || el.currentStyle.getAttribute( PIE.CSS_PREFIX + 'png-fix' ) ) === 'true' );
}
return val;
},
/**
* The isActive logic is slightly different, because getProps() always returns an object
* even if it is just falling back to the native background properties. But we only want
* to report is as being "active" if either the -pie-background override property is present
* and parses successfully or '-pie-png-fix' is set to true in IE6.
*/
isActive: PIE.StyleInfoBase.cacheWhenLocked( function() {
return (this.getCss3() || this.isPngFix()) && !!this.getProps();
} )
} );/**
* Handles parsing, caching, and detecting changes to border CSS
* @constructor
* @param {Element} el the target element
*/
PIE.BorderStyleInfo = PIE.StyleInfoBase.newStyleInfo( {
sides: [ 'Top', 'Right', 'Bottom', 'Left' ],
namedWidths: {
'thin': '1px',
'medium': '3px',
'thick': '5px'
},
parseCss: function( css ) {
var w = {},
s = {},
c = {},
active = false,
colorsSame = true,
stylesSame = true,
widthsSame = true;
this.withActualBorder( function() {
var el = this.targetElement,
cs = el.currentStyle,
i = 0,
style, color, width, lastStyle, lastColor, lastWidth, side, ltr;
for( ; i < 4; i++ ) {
side = this.sides[ i ];
ltr = side.charAt(0).toLowerCase();
style = s[ ltr ] = cs[ 'border' + side + 'Style' ];
color = cs[ 'border' + side + 'Color' ];
width = cs[ 'border' + side + 'Width' ];
if( i > 0 ) {
if( style !== lastStyle ) { stylesSame = false; }
if( color !== lastColor ) { colorsSame = false; }
if( width !== lastWidth ) { widthsSame = false; }
}
lastStyle = style;
lastColor = color;
lastWidth = width;
c[ ltr ] = PIE.getColor( color );
width = w[ ltr ] = PIE.getLength( s[ ltr ] === 'none' ? '0' : ( this.namedWidths[ width ] || width ) );
if( width.pixels( this.targetElement ) > 0 ) {
active = true;
}
}
} );
return active ? {
widths: w,
styles: s,
colors: c,
widthsSame: widthsSame,
colorsSame: colorsSame,
stylesSame: stylesSame
} : null;
},
getCss: PIE.StyleInfoBase.cacheWhenLocked( function() {
var el = this.targetElement,
cs = el.currentStyle,
css;
// Don't redraw or hide borders for cells in border-collapse:collapse tables
if( !( el.tagName in PIE.tableCellTags && el.offsetParent.currentStyle.borderCollapse === 'collapse' ) ) {
this.withActualBorder( function() {
css = cs.borderWidth + '|' + cs.borderStyle + '|' + cs.borderColor;
} );
}
return css;
} ),
/**
* Execute a function with the actual border styles (not overridden with runtimeStyle
* properties set by the renderers) available via currentStyle.
* @param fn
*/
withActualBorder: function( fn ) {
var rs = this.targetElement.runtimeStyle,
rsWidth = rs.borderWidth,
rsColor = rs.borderColor,
ret;
if( rsWidth ) rs.borderWidth = '';
if( rsColor ) rs.borderColor = '';
ret = fn.call( this );
if( rsWidth ) rs.borderWidth = rsWidth;
if( rsColor ) rs.borderColor = rsColor;
return ret;
}
} );
/**
* Handles parsing, caching, and detecting changes to border-image CSS
* @constructor
* @param {Element} el the target element
*/
PIE.BorderImageStyleInfo = PIE.StyleInfoBase.newStyleInfo( {
cssProperty: 'border-image',
styleProperty: 'borderImage',
repeatIdents: { 'stretch':1, 'round':1, 'repeat':1, 'space':1 },
parseCss: function( css ) {
var p = null, tokenizer, token, type, value,
slices, widths, outsets,
slashCount = 0,
Type = PIE.Tokenizer.Type,
IDENT = Type.IDENT,
NUMBER = Type.NUMBER,
PERCENT = Type.PERCENT;
if( css ) {
tokenizer = new PIE.Tokenizer( css );
p = {};
function isSlash( token ) {
return token && ( token.tokenType & Type.OPERATOR ) && ( token.tokenValue === '/' );
}
function isFillIdent( token ) {
return token && ( token.tokenType & IDENT ) && ( token.tokenValue === 'fill' );
}
function collectSlicesEtc() {
slices = tokenizer.until( function( tok ) {
return !( tok.tokenType & ( NUMBER | PERCENT ) );
} );
if( isFillIdent( tokenizer.next() ) && !p.fill ) {
p.fill = true;
} else {
tokenizer.prev();
}
if( isSlash( tokenizer.next() ) ) {
slashCount++;
widths = tokenizer.until( function( token ) {
return !token.isLengthOrPercent() && !( ( token.tokenType & IDENT ) && token.tokenValue === 'auto' );
} );
if( isSlash( tokenizer.next() ) ) {
slashCount++;
outsets = tokenizer.until( function( token ) {
return !token.isLength();
} );
}
} else {
tokenizer.prev();
}
}
while( token = tokenizer.next() ) {
type = token.tokenType;
value = token.tokenValue;
// Numbers and/or 'fill' keyword: slice values. May be followed optionally by width values, followed optionally by outset values
if( type & ( NUMBER | PERCENT ) && !slices ) {
tokenizer.prev();
collectSlicesEtc();
}
else if( isFillIdent( token ) && !p.fill ) {
p.fill = true;
collectSlicesEtc();
}
// Idents: one or values for 'repeat'
else if( ( type & IDENT ) && this.repeatIdents[value] && !p.repeat ) {
p.repeat = { h: value };
if( token = tokenizer.next() ) {
if( ( token.tokenType & IDENT ) && this.repeatIdents[token.tokenValue] ) {
p.repeat.v = token.tokenValue;
} else {
tokenizer.prev();
}
}
}
// URL of the image
else if( ( type & Type.URL ) && !p.src ) {
p.src = value;
}
// Found something unrecognized; exit.
else {
return null;
}
}
// Validate what we collected
if( !p.src || !slices || slices.length < 1 || slices.length > 4 ||
( widths && widths.length > 4 ) || ( slashCount === 1 && widths.length < 1 ) ||
( outsets && outsets.length > 4 ) || ( slashCount === 2 && outsets.length < 1 ) ) {
return null;
}
// Fill in missing values
if( !p.repeat ) {
p.repeat = { h: 'stretch' };
}
if( !p.repeat.v ) {
p.repeat.v = p.repeat.h;
}
function distributeSides( tokens, convertFn ) {
return {
't': convertFn( tokens[0] ),
'r': convertFn( tokens[1] || tokens[0] ),
'b': convertFn( tokens[2] || tokens[0] ),
'l': convertFn( tokens[3] || tokens[1] || tokens[0] )
};
}
p.slice = distributeSides( slices, function( tok ) {
return PIE.getLength( ( tok.tokenType & NUMBER ) ? tok.tokenValue + 'px' : tok.tokenValue );
} );
if( widths && widths[0] ) {
p.widths = distributeSides( widths, function( tok ) {
return tok.isLengthOrPercent() ? PIE.getLength( tok.tokenValue ) : tok.tokenValue;
} );
}
if( outsets && outsets[0] ) {
p.outset = distributeSides( outsets, function( tok ) {
return tok.isLength() ? PIE.getLength( tok.tokenValue ) : tok.tokenValue;
} );
}
}
return p;
}
} );/**
* Handles parsing, caching, and detecting changes to padding CSS
* @constructor
* @param {Element} el the target element
*/
PIE.PaddingStyleInfo = PIE.StyleInfoBase.newStyleInfo( {
parseCss: function( css ) {
var tokenizer = new PIE.Tokenizer( css ),
arr = [],
token;
while( ( token = tokenizer.next() ) && token.isLengthOrPercent() ) {
arr.push( PIE.getLength( token.tokenValue ) );
}
return arr.length > 0 && arr.length < 5 ? {
't': arr[0],
'r': arr[1] || arr[0],
'b': arr[2] || arr[0],
'l': arr[3] || arr[1] || arr[0]
} : null;
},
getCss: PIE.StyleInfoBase.cacheWhenLocked( function() {
var el = this.targetElement,
rs = el.runtimeStyle,
rsPadding = rs.padding,
padding;
if( rsPadding ) rs.padding = '';
padding = el.currentStyle.padding;
if( rsPadding ) rs.padding = rsPadding;
return padding;
} )
} );
PIE.RendererBase = {
/**
* Create a new Renderer class, with the standard constructor, and augmented by
* the RendererBase's members.
* @param proto
*/
newRenderer: function( proto ) {
function Renderer( el, boundsInfo, styleInfos, parent ) {
this.targetElement = el;
this.boundsInfo = boundsInfo;
this.styleInfos = styleInfos;
this.parent = parent;
}
PIE.merge( Renderer.prototype, PIE.RendererBase, proto );
return Renderer;
},
/**
* Determine if the renderer needs to be updated
* @return {boolean}
*/
needsUpdate: function() {
return false;
},
/**
* Run any preparation logic that would affect the main update logic of this
* renderer or any of the other renderers, e.g. things that might affect the
* element's size or style properties.
*/
prepareUpdate: PIE.emptyFn,
/**
* Tell the renderer to update based on modified properties or element dimensions
*/
updateRendering: function() {
if( this.isActive() ) {
this.draw();
} else {
this.destroy();
}
},
/**
* Hide the target element's border
*/
hideBorder: function() {
this.targetElement.runtimeStyle.borderColor = 'transparent';
},
/**
* Destroy the rendered objects. This is a base implementation which handles common renderer
* structures, but individual renderers may override as necessary.
*/
destroy: function() {
}
};
/**
* Root renderer for IE9; manages the rendering layers in the element's background
* @param {Element} el The target element
* @param {Object} styleInfos The StyleInfo objects
*/
PIE.IE9RootRenderer = PIE.RendererBase.newRenderer( {
outerCommasRE: /^,+|,+$/g,
innerCommasRE: /,+/g,
setBackgroundLayer: function(zIndex, bg) {
var me = this,
bgLayers = me._bgLayers || ( me._bgLayers = [] ),
undef;
bgLayers[zIndex] = bg || undef;
},
updateRendering: function() {
var me = this,
bgLayers = me._bgLayers,
bg;
if( bgLayers && ( bg = bgLayers.join( ',' ).replace( me.outerCommasRE, '' ).replace( me.innerCommasRE, ',' ) ) !== me._lastBg ) {
me._lastBg = me.targetElement.runtimeStyle.background = bg;
}
},
destroy: function() {
this.targetElement.runtimeStyle.background = '';
delete this._bgLayers;
}
} );
/**
* Renderer for element backgrounds, specific for IE9. Only handles translating CSS3 gradients
* to an equivalent SVG data URI.
* @constructor
* @param {Element} el The target element
* @param {Object} styleInfos The StyleInfo objects
*/
PIE.IE9BackgroundRenderer = PIE.RendererBase.newRenderer( {
drawingCanvas: doc.createElement( 'canvas' ),
bgLayerZIndex: 1,
needsUpdate: function() {
var si = this.styleInfos;
return si.backgroundInfo.changed();
},
isActive: function() {
var si = this.styleInfos;
return si.backgroundInfo.isActive() || si.borderImageInfo.isActive();
},
draw: function() {
var me = this,
styleInfos = me.styleInfos,
bgInfo = styleInfos.backgroundInfo,
props = bgInfo.getProps(),
bg, images, i = 0, img, bgAreaSize, bgSize;
if ( props ) {
bg = [];
images = props.bgImages;
if ( images ) {
while( img = images[ i++ ] ) {
if (img.imgType === 'linear-gradient' ) {
bgAreaSize = bgInfo.getBgAreaSize( bg.bgOrigin, me.boundsInfo, styleInfos.borderInfo, styleInfos.paddingInfo );
bgSize = ( img.bgSize || PIE.BgSize.DEFAULT ).pixels(
me.targetElement, bgAreaSize.w, bgAreaSize.h, bgAreaSize.w, bgAreaSize.h
);
bg.push(
'url(' + me.getGradientImgData( img, bgSize.w, bgSize.h ) + ') ' +
me.bgPositionToString( img.bgPosition ) + ' / ' + bgSize.w + 'px ' + bgSize.h + 'px ' +
( img.bgAttachment || '' ) + ' ' + ( img.bgOrigin || '' ) + ' ' + ( img.bgClip || '' )
);
} else {
bg.push( img.origString );
}
}
}
if ( props.color ) {
bg.push( props.color.val + ' ' + ( props.colorClip || '' ) );
}
me.parent.setBackgroundLayer(me.bgLayerZIndex, bg.join(','));
}
},
bgPositionToString: function( bgPosition ) {
return bgPosition ? bgPosition.tokens.map(function(token) {
return token.tokenValue;
}).join(' ') : '0 0';
},
getGradientImgData: function( info, bgWidth, bgHeight ) {
var me = this,
el = me.targetElement,
stopsInfo = info.stops,
stopCount = stopsInfo.length,
metrics = PIE.GradientUtil.getGradientMetrics( el, bgWidth, bgHeight, info ),
lineLength = metrics.lineLength,
canvas = me.drawingCanvas,
context = canvas.getContext( '2d' ),
gradient = context.createLinearGradient( metrics.startX, metrics.startY, metrics.endX, metrics.endY ),
stopPx = [],
i, j, before, after;
// Find the pixel offsets along the CSS3 gradient-line for each stop.
for( i = 0; i < stopCount; i++ ) {
stopPx.push( stopsInfo[i].offset ? stopsInfo[i].offset.pixels( el, lineLength ) :
i === 0 ? 0 : i === stopCount - 1 ? lineLength : null );
}
// Fill in gaps with evenly-spaced offsets
for( i = 1; i < stopCount; i++ ) {
if( stopPx[ i ] === null ) {
before = stopPx[ i - 1 ];
j = i;
do {
after = stopPx[ ++j ];
} while( after === null );
stopPx[ i ] = before + ( after - before ) / ( j - i + 1 );
}
}
// Convert stops to percentages along the gradient line and add a stop for each
for( i = 0; i < stopCount; i++ ) {
gradient.addColorStop( stopPx[ i ] / lineLength, stopsInfo[ i ].color.val );
}
canvas.width = bgWidth;
canvas.height = bgHeight;
context.fillStyle = gradient;
context.fillRect( 0, 0, bgWidth, bgHeight );
return canvas.toDataURL();
},
destroy: function() {
this.parent.setBackgroundLayer( this.bgLayerZIndex );
}
} );
/**
* Renderer for border-image
* @constructor
* @param {Element} el The target element
* @param {Object} styleInfos The StyleInfo objects
* @param {PIE.RootRenderer} parent
*/
PIE.IE9BorderImageRenderer = PIE.RendererBase.newRenderer( {
REPEAT: 'repeat',
STRETCH: 'stretch',
ROUND: 'round',
bgLayerZIndex: 0,
needsUpdate: function() {
return this.styleInfos.borderImageInfo.changed();
},
isActive: function() {
return this.styleInfos.borderImageInfo.isActive();
},
draw: function() {
var me = this,
props = me.styleInfos.borderImageInfo.getProps(),
borderProps = me.styleInfos.borderInfo.getProps(),
bounds = me.boundsInfo.getBounds(),
repeat = props.repeat,
repeatH = repeat.h,
repeatV = repeat.v,
el = me.targetElement,
isAsync = 0;
PIE.Util.withImageSize( props.src, function( imgSize ) {
var elW = bounds.w,
elH = bounds.h,
imgW = imgSize.w,
imgH = imgSize.h,
// The image cannot be referenced as a URL directly in the SVG because IE9 throws a strange
// security exception (perhaps due to cross-origin policy within data URIs?) Therefore we
// work around this by converting the image data into a data URI itself using a transient
// canvas. This unfortunately requires the border-image src to be within the same domain,
// which isn't a limitation in true border-image, so we need to try and find a better fix.
imgSrc = me.imageToDataURI( props.src, imgW, imgH ),
REPEAT = me.REPEAT,
STRETCH = me.STRETCH,
ROUND = me.ROUND,
ceil = Math.ceil,
zero = PIE.getLength( '0' ),
widths = props.widths || ( borderProps ? borderProps.widths : { 't': zero, 'r': zero, 'b': zero, 'l': zero } ),
widthT = widths['t'].pixels( el ),
widthR = widths['r'].pixels( el ),
widthB = widths['b'].pixels( el ),
widthL = widths['l'].pixels( el ),
slices = props.slice,
sliceT = slices['t'].pixels( el ),
sliceR = slices['r'].pixels( el ),
sliceB = slices['b'].pixels( el ),
sliceL = slices['l'].pixels( el ),
centerW = elW - widthL - widthR,
middleH = elH - widthT - widthB,
imgCenterW = imgW - sliceL - sliceR,
imgMiddleH = imgH - sliceT - sliceB,
// Determine the size of each tile - 'round' is handled below
tileSizeT = repeatH === STRETCH ? centerW : imgCenterW * widthT / sliceT,
tileSizeR = repeatV === STRETCH ? middleH : imgMiddleH * widthR / sliceR,
tileSizeB = repeatH === STRETCH ? centerW : imgCenterW * widthB / sliceB,
tileSizeL = repeatV === STRETCH ? middleH : imgMiddleH * widthL / sliceL,
svg,
patterns = [],
rects = [],
i = 0;
// For 'round', subtract from each tile's size enough so that they fill the space a whole number of times
if (repeatH === ROUND) {
tileSizeT -= (tileSizeT - (centerW % tileSizeT || tileSizeT)) / ceil(centerW / tileSizeT);
tileSizeB -= (tileSizeB - (centerW % tileSizeB || tileSizeB)) / ceil(centerW / tileSizeB);
}
if (repeatV === ROUND) {
tileSizeR -= (tileSizeR - (middleH % tileSizeR || tileSizeR)) / ceil(middleH / tileSizeR);
tileSizeL -= (tileSizeL - (middleH % tileSizeL || tileSizeL)) / ceil(middleH / tileSizeL);
}
// Build the SVG for the border-image rendering. Add each piece as a pattern, which is then stretched
// or repeated as the fill of a rect of appropriate size.
svg = [
''
);
me.parent.setBackgroundLayer( me.bgLayerZIndex, 'url(data:image/svg+xml,' + escape( svg.join( '' ) ) + ') no-repeat border-box border-box' );
// If the border-image's src wasn't immediately available, the SVG for its background layer
// will have been created asynchronously after the main element's update has finished; we'll
// therefore need to force the root renderer to sync to the final background once finished.
if( isAsync ) {
me.parent.updateRendering();
}
}, me );
isAsync = 1;
},
/**
* Convert a given image to a data URI
*/
imageToDataURI: (function() {
var uris = {};
return function( src, width, height ) {
var uri = uris[ src ],
image, canvas;
if ( !uri ) {
image = new Image();
canvas = doc.createElement( 'canvas' );
image.src = src;
canvas.width = width;
canvas.height = height;
canvas.getContext( '2d' ).drawImage( image, 0, 0 );
uri = uris[ src ] = canvas.toDataURL();
}
return uri;
}
})(),
prepareUpdate: function() {
if (this.isActive()) {
var me = this,
el = me.targetElement,
rs = el.runtimeStyle,
widths = me.styleInfos.borderImageInfo.getProps().widths;
// Force border-style to solid so it doesn't collapse
rs.borderStyle = 'solid';
// If widths specified in border-image shorthand, override border-width
if ( widths ) {
rs.borderTopWidth = widths['t'].pixels( el ) + 'px';
rs.borderRightWidth = widths['r'].pixels( el ) + 'px';
rs.borderBottomWidth = widths['b'].pixels( el ) + 'px';
rs.borderLeftWidth = widths['l'].pixels( el ) + 'px';
}
// Make the border transparent
me.hideBorder();
}
},
destroy: function() {
var me = this,
rs = me.targetElement.runtimeStyle;
me.parent.setBackgroundLayer( me.bgLayerZIndex );
rs.borderColor = rs.borderStyle = rs.borderWidth = '';
}
} );
PIE.Element = (function() {
var wrappers = {},
lazyInitCssProp = PIE.CSS_PREFIX + 'lazy-init',
pollCssProp = PIE.CSS_PREFIX + 'poll',
trackActiveCssProp = PIE.CSS_PREFIX + 'track-active',
trackHoverCssProp = PIE.CSS_PREFIX + 'track-hover',
hoverClass = PIE.CLASS_PREFIX + 'hover',
activeClass = PIE.CLASS_PREFIX + 'active',
focusClass = PIE.CLASS_PREFIX + 'focus',
firstChildClass = PIE.CLASS_PREFIX + 'first-child',
ignorePropertyNames = { 'background':1, 'bgColor':1, 'display': 1 },
classNameRegExes = {},
dummyArray = [];
function addClass( el, className ) {
el.className += ' ' + className;
}
function removeClass( el, className ) {
var re = classNameRegExes[ className ] ||
( classNameRegExes[ className ] = new RegExp( '\\b' + className + '\\b', 'g' ) );
el.className = el.className.replace( re, '' );
}
function delayAddClass( el, className /*, className2*/ ) {
var classes = dummyArray.slice.call( arguments, 1 ),
i = classes.length;
setTimeout( function() {
if( el ) {
while( i-- ) {
addClass( el, classes[ i ] );
}
}
}, 0 );
}
function delayRemoveClass( el, className /*, className2*/ ) {
var classes = dummyArray.slice.call( arguments, 1 ),
i = classes.length;
setTimeout( function() {
if( el ) {
while( i-- ) {
removeClass( el, classes[ i ] );
}
}
}, 0 );
}
function Element( el ) {
var me = this,
childRenderers,
rootRenderer,
boundsInfo = new PIE.BoundsInfo( el ),
styleInfos,
styleInfosArr,
initializing,
initialized,
eventsAttached,
eventListeners = [],
delayed,
destroyed,
poll;
me.el = el;
/**
* Initialize PIE for this element.
*/
function init() {
if( !initialized ) {
var docEl,
bounds,
ieDocMode = PIE.ieDocMode,
cs = el.currentStyle,
lazy = cs.getAttribute( lazyInitCssProp ) === 'true',
trackActive = cs.getAttribute( trackActiveCssProp ) !== 'false',
trackHover = cs.getAttribute( trackHoverCssProp ) !== 'false';
// Polling for size/position changes: default to on in IE8, off otherwise, overridable by -pie-poll
poll = cs.getAttribute( pollCssProp );
poll = ieDocMode > 7 ? poll !== 'false' : poll === 'true';
// Force layout so move/resize events will fire. Set this as soon as possible to avoid layout changes
// after load, but make sure it only gets called the first time through to avoid recursive calls to init().
if( !initializing ) {
initializing = 1;
el.runtimeStyle.zoom = 1;
initFirstChildPseudoClass();
}
boundsInfo.lock();
// If the -pie-lazy-init:true flag is set, check if the element is outside the viewport and if so, delay initialization
if( lazy && ( bounds = boundsInfo.getBounds() ) && ( docEl = doc.documentElement || doc.body ) &&
( bounds.y > docEl.clientHeight || bounds.x > docEl.clientWidth || bounds.y + bounds.h < 0 || bounds.x + bounds.w < 0 ) ) {
if( !delayed ) {
delayed = 1;
PIE.OnScroll.observe( init );
}
} else {
initialized = 1;
delayed = initializing = 0;
PIE.OnScroll.unobserve( init );
// Create the style infos and renderers
if ( ieDocMode === 9 ) {
styleInfos = {
backgroundInfo: new PIE.BackgroundStyleInfo( el ),
borderImageInfo: new PIE.BorderImageStyleInfo( el ),
borderInfo: new PIE.BorderStyleInfo( el ),
paddingInfo: new PIE.PaddingStyleInfo( el )
};
styleInfosArr = [
styleInfos.backgroundInfo,
styleInfos.borderInfo,
styleInfos.borderImageInfo,
styleInfos.paddingInfo
];
rootRenderer = new PIE.IE9RootRenderer( el, boundsInfo, styleInfos );
childRenderers = [
new PIE.IE9BackgroundRenderer( el, boundsInfo, styleInfos, rootRenderer ),
new PIE.IE9BorderImageRenderer( el, boundsInfo, styleInfos, rootRenderer )
];
} else {
styleInfos = {
backgroundInfo: new PIE.BackgroundStyleInfo( el ),
borderInfo: new PIE.BorderStyleInfo( el ),
borderImageInfo: new PIE.BorderImageStyleInfo( el ),
borderRadiusInfo: new PIE.BorderRadiusStyleInfo( el ),
boxShadowInfo: new PIE.BoxShadowStyleInfo( el ),
paddingInfo: new PIE.PaddingStyleInfo( el ),
visibilityInfo: new PIE.VisibilityStyleInfo( el )
};
styleInfosArr = [
styleInfos.backgroundInfo,
styleInfos.borderInfo,
styleInfos.borderImageInfo,
styleInfos.borderRadiusInfo,
styleInfos.boxShadowInfo,
styleInfos.paddingInfo,
styleInfos.visibilityInfo
];
rootRenderer = new PIE.RootRenderer( el, boundsInfo, styleInfos );
childRenderers = [
new PIE.BoxShadowOutsetRenderer( el, boundsInfo, styleInfos, rootRenderer ),
new PIE.BackgroundRenderer( el, boundsInfo, styleInfos, rootRenderer ),
//new PIE.BoxShadowInsetRenderer( el, boundsInfo, styleInfos, rootRenderer ),
new PIE.BorderRenderer( el, boundsInfo, styleInfos, rootRenderer ),
new PIE.BorderImageRenderer( el, boundsInfo, styleInfos, rootRenderer )
];
if( el.tagName === 'IMG' ) {
childRenderers.push( new PIE.ImgRenderer( el, boundsInfo, styleInfos, rootRenderer ) );
}
rootRenderer.childRenderers = childRenderers; // circular reference, can't pass in constructor; TODO is there a cleaner way?
}
// Add property change listeners to ancestors if requested
initAncestorEventListeners();
// Add to list of polled elements when -pie-poll:true
if( poll ) {
PIE.Heartbeat.observe( update );
PIE.Heartbeat.run();
}
// Trigger rendering
update( 0, 1 );
}
if( !eventsAttached ) {
eventsAttached = 1;
if( ieDocMode < 9 ) {
addListener( el, 'onmove', handleMoveOrResize );
}
addListener( el, 'onresize', handleMoveOrResize );
addListener( el, 'onpropertychange', propChanged );
if( trackHover ) {
addListener( el, 'onmouseenter', mouseEntered );
}
if( trackHover || trackActive ) {
addListener( el, 'onmouseleave', mouseLeft );
}
if( trackActive ) {
addListener( el, 'onmousedown', mousePressed );
}
if( el.tagName in PIE.focusableElements ) {
addListener( el, 'onfocus', focused );
addListener( el, 'onblur', blurred );
}
PIE.OnResize.observe( handleMoveOrResize );
PIE.OnUnload.observe( removeEventListeners );
}
boundsInfo.unlock();
}
}
/**
* Event handler for onmove and onresize events. Invokes update() only if the element's
* bounds have previously been calculated, to prevent multiple runs during page load when
* the element has no initial CSS3 properties.
*/
function handleMoveOrResize() {
if( boundsInfo && boundsInfo.hasBeenQueried() ) {
update();
}
}
/**
* Update position and/or size as necessary. Both move and resize events call
* this rather than the updatePos/Size functions because sometimes, particularly
* during page load, one will fire but the other won't.
*/
function update( isPropChange, force ) {
if( !destroyed ) {
if( initialized ) {
lockAll();
var i = 0, len = childRenderers.length,
sizeChanged = boundsInfo.sizeChanged();
for( ; i < len; i++ ) {
childRenderers[i].prepareUpdate();
}
for( i = 0; i < len; i++ ) {
if( force || sizeChanged || ( isPropChange && childRenderers[i].needsUpdate() ) ) {
childRenderers[i].updateRendering();
}
}
if( force || sizeChanged || isPropChange || boundsInfo.positionChanged() ) {
rootRenderer.updateRendering();
}
unlockAll();
}
else if( !initializing ) {
init();
}
}
}
/**
* Handle property changes to trigger update when appropriate.
*/
function propChanged() {
// Some elements like
fire onpropertychange events for old-school background properties
// ('background', 'bgColor') when runtimeStyle background properties are changed, which
// results in an infinite loop; therefore we filter out those property names. Also, 'display'
// is ignored because size calculations don't work correctly immediately when its onpropertychange
// event fires, and because it will trigger an onresize event anyway.
if( initialized && !( event && event.propertyName in ignorePropertyNames ) ) {
update( 1 );
}
}
/**
* Handle mouseenter events. Adds a custom class to the element to allow IE6 to add
* hover styles to non-link elements, and to trigger a propertychange update.
*/
function mouseEntered() {
//must delay this because the mouseenter event fires before the :hover styles are added.
delayAddClass( el, hoverClass );
}
/**
* Handle mouseleave events
*/
function mouseLeft() {
//must delay this because the mouseleave event fires before the :hover styles are removed.
delayRemoveClass( el, hoverClass, activeClass );
}
/**
* Handle mousedown events. Adds a custom class to the element to allow IE6 to add
* active styles to non-link elements, and to trigger a propertychange update.
*/
function mousePressed() {
//must delay this because the mousedown event fires before the :active styles are added.
delayAddClass( el, activeClass );
// listen for mouseups on the document; can't just be on the element because the user might
// have dragged out of the element while the mouse button was held down
PIE.OnMouseup.observe( mouseReleased );
}
/**
* Handle mouseup events
*/
function mouseReleased() {
//must delay this because the mouseup event fires before the :active styles are removed.
delayRemoveClass( el, activeClass );
PIE.OnMouseup.unobserve( mouseReleased );
}
/**
* Handle focus events. Adds a custom class to the element to trigger a propertychange update.
*/
function focused() {
//must delay this because the focus event fires before the :focus styles are added.
delayAddClass( el, focusClass );
}
/**
* Handle blur events
*/
function blurred() {
//must delay this because the blur event fires before the :focus styles are removed.
delayRemoveClass( el, focusClass );
}
/**
* Handle property changes on ancestors of the element; see initAncestorEventListeners()
* which adds these listeners as requested with the -pie-watch-ancestors CSS property.
*/
function ancestorPropChanged() {
var name = event.propertyName;
if( name === 'className' || name === 'id' || name.indexOf( 'style.' ) === 0 ) {
propChanged();
}
}
function lockAll() {
boundsInfo.lock();
for( var i = styleInfosArr.length; i--; ) {
styleInfosArr[i].lock();
}
}
function unlockAll() {
for( var i = styleInfosArr.length; i--; ) {
styleInfosArr[i].unlock();
}
boundsInfo.unlock();
}
function addListener( targetEl, type, handler ) {
targetEl.attachEvent( type, handler );
eventListeners.push( [ targetEl, type, handler ] );
}
/**
* Remove all event listeners from the element and any monitored ancestors.
*/
function removeEventListeners() {
if (eventsAttached) {
var i = eventListeners.length,
listener;
while( i-- ) {
listener = eventListeners[ i ];
listener[ 0 ].detachEvent( listener[ 1 ], listener[ 2 ] );
}
PIE.OnUnload.unobserve( removeEventListeners );
eventsAttached = 0;
eventListeners = [];
}
}
/**
* Clean everything up when the behavior is removed from the element, or the element
* is manually destroyed.
*/
function destroy() {
if( !destroyed ) {
var i, len;
removeEventListeners();
destroyed = 1;
// destroy any active renderers
if( childRenderers ) {
for( i = 0, len = childRenderers.length; i < len; i++ ) {
childRenderers[i].finalized = 1;
childRenderers[i].destroy();
}
}
rootRenderer.destroy();
// Remove from list of polled elements in IE8
if( poll ) {
PIE.Heartbeat.unobserve( update );
}
// Stop onresize listening
PIE.OnResize.unobserve( update );
// Kill references
childRenderers = rootRenderer = boundsInfo = styleInfos = styleInfosArr = el = null;
me.el = me = 0;
}
}
/**
* If requested via the custom -pie-watch-ancestors CSS property, add onpropertychange and
* other event listeners to ancestor(s) of the element so we can pick up style changes
* based on CSS rules using descendant selectors.
*/
function initAncestorEventListeners() {
var watch = el.currentStyle.getAttribute( PIE.CSS_PREFIX + 'watch-ancestors' ),
i, a;
if( watch ) {
watch = parseInt( watch, 10 );
i = 0;
a = el.parentNode;
while( a && ( watch === 'NaN' || i++ < watch ) ) {
addListener( a, 'onpropertychange', ancestorPropChanged );
addListener( a, 'onmouseenter', mouseEntered );
addListener( a, 'onmouseleave', mouseLeft );
addListener( a, 'onmousedown', mousePressed );
if( a.tagName in PIE.focusableElements ) {
addListener( a, 'onfocus', focused );
addListener( a, 'onblur', blurred );
}
a = a.parentNode;
}
}
}
/**
* If the target element is a first child, add a pie_first-child class to it. This allows using
* the added class as a workaround for the fact that PIE's rendering element breaks the :first-child
* pseudo-class selector.
*/
function initFirstChildPseudoClass() {
var tmpEl = el,
isFirst = 1;
while( tmpEl = tmpEl.previousSibling ) {
if( tmpEl.nodeType === 1 ) {
isFirst = 0;
break;
}
}
if( isFirst ) {
addClass( el, firstChildClass );
}
}
// These methods are all already bound to this instance so there's no need to wrap them
// in a closure to maintain the 'this' scope object when calling them.
me.init = init;
me.destroy = destroy;
}
Element.getInstance = function( el ) {
var id = el[ 'uniqueID' ];
return wrappers[ id ] || ( wrappers[ id ] = new Element( el ) );
};
Element.destroy = function( el ) {
var id = el[ 'uniqueID' ],
wrapper = wrappers[ id ];
if( wrapper ) {
wrapper.destroy();
delete wrappers[ id ];
}
};
Element.destroyAll = function() {
var els = [], wrapper;
if( wrappers ) {
for( var w in wrappers ) {
if( wrappers.hasOwnProperty( w ) ) {
wrapper = wrappers[ w ];
els.push( wrapper.el );
wrapper.destroy();
}
}
wrappers = {};
}
return els;
};
return Element;
})();
/*
* This file exposes the public API for invoking PIE.
*/
/**
* The version number of this PIE build.
*/
PIE[ 'version' ] = '2.0beta1';
/**
* @property supportsVML
* True if the current IE browser environment has a functioning VML engine. Should be true
* in most IEs, but in rare cases may be false. If false, PIE will exit immediately when
* attached to an element (for IE<9) to prevent errors; this property may also be used for
* debugging or by external scripts to perform some special action when VML support is absent.
* @type {boolean}
*/
PIE[ 'supportsVML' ] = PIE.supportsVML;
/**
* Programatically attach PIE to a single element.
* @param {Element} el
*/
PIE[ 'attach' ] = function( el ) {
if ( PIE.ieDocMode === 9 || ( PIE.ieDocMode < 9 && PIE.supportsVML ) ) {
PIE.Element.getInstance( el ).init();
}
};
/**
* Programatically detach PIE from a single element.
* @param {Element} el
*/
PIE[ 'detach' ] = function( el ) {
PIE.Element.destroy( el );
};
})( window, document );