ambari-web/vendor/scripts/spin.js - ambari - Git at Google

 //fgnass.github.com/spin.js#v1.2.7
 !function(window, document, undefined) {

   /**
    * Copyright (c) 2011 Felix Gnass [fgnass at neteye dot de]
    * Licensed under the MIT license
    */

   var prefixes = ['webkit', 'Moz', 'ms', 'O'] /* Vendor prefixes */
     , animations = {} /* Animation rules keyed by their name */
     , useCssAnimations

   /**
    * Utility function to create elements. If no tag name is given,
    * a DIV is created. Optionally properties can be passed.
    */
   function createEl(tag, prop) {
     var el = document.createElement(tag || 'div')
       , n

     for(n in prop) el[n] = prop[n]
     return el
   }

   /**
    * Appends children and returns the parent.
    */
   function ins(parent /* child1, child2, ...*/) {
     for (var i=1, n=arguments.length; i<n; i++)
       parent.appendChild(arguments[i])

     return parent
   }

   /**
    * Insert a new stylesheet to hold the @keyframe or VML rules.
    */
   var sheet = function() {
     var el = createEl('style', {type : 'text/css'})
     ins(document.getElementsByTagName('head')[0], el)
     return el.sheet || el.styleSheet
   }()

   /**
    * Creates an opacity keyframe animation rule and returns its name.
    * Since most mobile Webkits have timing issues with animation-delay,
    * we create separate rules for each line/segment.
    */
   function addAnimation(alpha, trail, i, lines) {
     var name = ['opacity', trail, ~~(alpha*100), i, lines].join('-')
       , start = 0.01 + i/lines*100
       , z = Math.max(1 - (1-alpha) / trail * (100-start), alpha)
       , prefix = useCssAnimations.substring(0, useCssAnimations.indexOf('Animation')).toLowerCase()
       , pre = prefix && '-'+prefix+'-' || ''

     if (!animations[name]) {
       sheet.insertRule(
         '@' + pre + 'keyframes ' + name + '{' +
         '0%{opacity:' + z + '}' +
         start + '%{opacity:' + alpha + '}' +
         (start+0.01) + '%{opacity:1}' +
         (start+trail) % 100 + '%{opacity:' + alpha + '}' +
         '100%{opacity:' + z + '}' +
         '}', sheet.cssRules.length)

       animations[name] = 1
     }
     return name
   }

   /**
    * Tries various vendor prefixes and returns the first supported property.
    **/
   function vendor(el, prop) {
     var s = el.style
       , pp
       , i

     if(s[prop] !== undefined) return prop
     prop = prop.charAt(0).toUpperCase() + prop.slice(1)
     for(i=0; i<prefixes.length; i++) {
       pp = prefixes[i]+prop
       if(s[pp] !== undefined) return pp
     }
   }

   /**
    * Sets multiple style properties at once.
    */
   function css(el, prop) {
     for (var n in prop)
       el.style[vendor(el, n)||n] = prop[n]

     return el
   }

   /**
    * Fills in default values.
    */
   function merge(obj) {
     for (var i=1; i < arguments.length; i++) {
       var def = arguments[i]
       for (var n in def)
         if (obj[n] === undefined) obj[n] = def[n]
     }
     return obj
   }

   /**
    * Returns the absolute page-offset of the given element.
    */
   function pos(el) {
     var o = { x:el.offsetLeft, y:el.offsetTop }
     while((el = el.offsetParent))
       o.x+=el.offsetLeft, o.y+=el.offsetTop

     return o
   }

   var defaults = {
     lines: 12,            // The number of lines to draw
     length: 7,            // The length of each line
     width: 5,             // The line thickness
     radius: 10,           // The radius of the inner circle
     rotate: 0,            // Rotation offset
     corners: 1,           // Roundness (0..1)
     color: '#000',        // #rgb or #rrggbb
     speed: 1,             // Rounds per second
     trail: 100,           // Afterglow percentage
     opacity: 1/4,         // Opacity of the lines
     fps: 20,              // Frames per second when using setTimeout()
     zIndex: 2e9,          // Use a high z-index by default
     className: 'spinner', // CSS class to assign to the element
     top: 'auto',          // center vertically
     left: 'auto',         // center horizontally
     position: 'relative'  // element position
   }

   /** The constructor */
   var Spinner = function Spinner(o) {
     if (!this.spin) return new Spinner(o)
     this.opts = merge(o || {}, Spinner.defaults, defaults)
   }

   Spinner.defaults = {}

   merge(Spinner.prototype, {
     spin: function(target) {
       this.stop()
       var self = this
         , o = self.opts
         , el = self.el = css(createEl(0, {className: o.className}), {position: o.position, width: 0, zIndex: o.zIndex})
         , mid = o.radius+o.length+o.width
         , ep // element position
         , tp // target position

       if (target) {
         target.insertBefore(el, target.firstChild||null)
         tp = pos(target)
         ep = pos(el)
         css(el, {
           left: (o.left == 'auto' ? tp.x-ep.x + (target.offsetWidth >> 1) : parseInt(o.left, 10) + mid) + 'px',
           top: (o.top == 'auto' ? tp.y-ep.y + (target.offsetHeight >> 1) : parseInt(o.top, 10) + mid)  + 'px'
         })
       }

       el.setAttribute('aria-role', 'progressbar')
       self.lines(el, self.opts)

       if (!useCssAnimations) {
         // No CSS animation support, use setTimeout() instead
         var i = 0
           , fps = o.fps
           , f = fps/o.speed
           , ostep = (1-o.opacity) / (f*o.trail / 100)
           , astep = f/o.lines

         ;(function anim() {
           i++;
           for (var s=o.lines; s; s--) {
             var alpha = Math.max(1-(i+s*astep)%f * ostep, o.opacity)
             self.opacity(el, o.lines-s, alpha, o)
           }
           self.timeout = self.el && setTimeout(anim, ~~(1000/fps))
         })()
       }
       return self
     },

     stop: function() {
       var el = this.el
       if (el) {
         clearTimeout(this.timeout)
         if (el.parentNode) el.parentNode.removeChild(el)
         this.el = undefined
       }
       return this
     },

     lines: function(el, o) {
       var i = 0
         , seg

       function fill(color, shadow) {
         return css(createEl(), {
           position: 'absolute',
           width: (o.length+o.width) + 'px',
           height: o.width + 'px',
           background: color,
           boxShadow: shadow,
           transformOrigin: 'left',
           transform: 'rotate(' + ~~(360/o.lines*i+o.rotate) + 'deg) translate(' + o.radius+'px' +',0)',
           borderRadius: (o.corners * o.width>>1) + 'px'
         })
       }

       for (; i < o.lines; i++) {
         seg = css(createEl(), {
           position: 'absolute',
           top: 1+~(o.width/2) + 'px',
           transform: o.hwaccel ? 'translate3d(0,0,0)' : '',
           opacity: o.opacity,
           animation: useCssAnimations && addAnimation(o.opacity, o.trail, i, o.lines) + ' ' + 1/o.speed + 's linear infinite'
         })

         if (o.shadow) ins(seg, css(fill('#000', '0 0 4px ' + '#000'), {top: 2+'px'}))

         ins(el, ins(seg, fill(o.color, '0 0 1px rgba(0,0,0,.1)')))
       }
       return el
     },

     opacity: function(el, i, val) {
       if (i < el.childNodes.length) el.childNodes[i].style.opacity = val
     }

   })

   /////////////////////////////////////////////////////////////////////////
   // VML rendering for IE
   /////////////////////////////////////////////////////////////////////////

   /**
    * Check and init VML support
    */
   ;(function() {

     function vml(tag, attr) {
       return createEl('<' + tag + ' xmlns="urn:schemas-microsoft.com:vml" class="spin-vml">', attr)
     }

     var s = css(createEl('group'), {behavior: 'url(#default#VML)'})

     if (!vendor(s, 'transform') && s.adj) {

       // VML support detected. Insert CSS rule ...
       sheet.addRule('.spin-vml', 'behavior:url(#default#VML)')

       Spinner.prototype.lines = function(el, o) {
         var r = o.length+o.width
           , s = 2*r

         function grp() {
           return css(
             vml('group', {
               coordsize: s + ' ' + s,
               coordorigin: -r + ' ' + -r
             }),
             { width: s, height: s }
           )
         }

         var margin = -(o.width+o.length)*2 + 'px'
           , g = css(grp(), {position: 'absolute', top: margin, left: margin})
           , i

         function seg(i, dx, filter) {
           ins(g,
             ins(css(grp(), {rotation: 360 / o.lines * i + 'deg', left: ~~dx}),
               ins(css(vml('roundrect', {arcsize: o.corners}), {
                   width: r,
                   height: o.width,
                   left: o.radius,
                   top: -o.width>>1,
                   filter: filter
                 }),
                 vml('fill', {color: o.color, opacity: o.opacity}),
                 vml('stroke', {opacity: 0}) // transparent stroke to fix color bleeding upon opacity change
               )
             )
           )
         }

         if (o.shadow)
           for (i = 1; i <= o.lines; i++)
             seg(i, -2, 'progid:DXImageTransform.Microsoft.Blur(pixelradius=2,makeshadow=1,shadowopacity=.3)')

         for (i = 1; i <= o.lines; i++) seg(i)
         return ins(el, g)
       }

       Spinner.prototype.opacity = function(el, i, val, o) {
         var c = el.firstChild
         o = o.shadow && o.lines || 0
         if (c && i+o < c.childNodes.length) {
           c = c.childNodes[i+o]; c = c && c.firstChild; c = c && c.firstChild
           if (c) c.opacity = val
         }
       }
     }
     else
       useCssAnimations = vendor(s, 'animation')
   })()

   if (typeof define == 'function' && define.amd)
     define(function() { return Spinner })
   else
     window.Spinner = Spinner

 }(window, document);
	//fgnass.github.com/spin.js#v1.2.7
	!function(window, document, undefined) {

	/**
	* Copyright (c) 2011 Felix Gnass [fgnass at neteye dot de]
	* Licensed under the MIT license
	*/

	var prefixes = ['webkit', 'Moz', 'ms', 'O'] /* Vendor prefixes */
	, animations = {} /* Animation rules keyed by their name */
	, useCssAnimations

	/**
	* Utility function to create elements. If no tag name is given,
	* a DIV is created. Optionally properties can be passed.
	*/
	function createEl(tag, prop) {
	var el = document.createElement(tag \|\| 'div')
	, n

	for(n in prop) el[n] = prop[n]
	return el
	}

	/**
	* Appends children and returns the parent.
	*/
	function ins(parent /* child1, child2, ...*/) {
	for (var i=1, n=arguments.length; i<n; i++)
	parent.appendChild(arguments[i])

	return parent
	}

	/**
	* Insert a new stylesheet to hold the @keyframe or VML rules.
	*/
	var sheet = function() {
	var el = createEl('style', {type : 'text/css'})
	ins(document.getElementsByTagName('head')[0], el)
	return el.sheet \|\| el.styleSheet
	}()

	/**
	* Creates an opacity keyframe animation rule and returns its name.
	* Since most mobile Webkits have timing issues with animation-delay,
	* we create separate rules for each line/segment.
	*/
	function addAnimation(alpha, trail, i, lines) {
	var name = ['opacity', trail, ~~(alpha*100), i, lines].join('-')
	, start = 0.01 + i/lines*100
	, z = Math.max(1 - (1-alpha) / trail * (100-start), alpha)
	, prefix = useCssAnimations.substring(0, useCssAnimations.indexOf('Animation')).toLowerCase()
	, pre = prefix && '-'+prefix+'-' \|\| ''

	if (!animations[name]) {
	sheet.insertRule(
	'@' + pre + 'keyframes ' + name + '{' +
	'0%{opacity:' + z + '}' +
	start + '%{opacity:' + alpha + '}' +
	(start+0.01) + '%{opacity:1}' +
	(start+trail) % 100 + '%{opacity:' + alpha + '}' +
	'100%{opacity:' + z + '}' +
	'}', sheet.cssRules.length)

	animations[name] = 1
	}
	return name
	}

	/**
	* Tries various vendor prefixes and returns the first supported property.
	**/
	function vendor(el, prop) {
	var s = el.style
	, pp
	, i

	if(s[prop] !== undefined) return prop
	prop = prop.charAt(0).toUpperCase() + prop.slice(1)
	for(i=0; i<prefixes.length; i++) {
	pp = prefixes[i]+prop
	if(s[pp] !== undefined) return pp
	}
	}

	/**
	* Sets multiple style properties at once.
	*/
	function css(el, prop) {
	for (var n in prop)
	el.style[vendor(el, n)\|\|n] = prop[n]

	return el
	}

	/**
	* Fills in default values.
	*/
	function merge(obj) {
	for (var i=1; i < arguments.length; i++) {
	var def = arguments[i]
	for (var n in def)
	if (obj[n] === undefined) obj[n] = def[n]
	}
	return obj
	}

	/**
	* Returns the absolute page-offset of the given element.
	*/
	function pos(el) {
	var o = { x:el.offsetLeft, y:el.offsetTop }
	while((el = el.offsetParent))
	o.x+=el.offsetLeft, o.y+=el.offsetTop

	return o
	}

	var defaults = {
	lines: 12, // The number of lines to draw
	length: 7, // The length of each line
	width: 5, // The line thickness
	radius: 10, // The radius of the inner circle
	rotate: 0, // Rotation offset
	corners: 1, // Roundness (0..1)
	color: '#000', // #rgb or #rrggbb
	speed: 1, // Rounds per second
	trail: 100, // Afterglow percentage
	opacity: 1/4, // Opacity of the lines
	fps: 20, // Frames per second when using setTimeout()
	zIndex: 2e9, // Use a high z-index by default
	className: 'spinner', // CSS class to assign to the element
	top: 'auto', // center vertically
	left: 'auto', // center horizontally
	position: 'relative' // element position
	}

	/** The constructor */
	var Spinner = function Spinner(o) {
	if (!this.spin) return new Spinner(o)
	this.opts = merge(o \|\| {}, Spinner.defaults, defaults)
	}

	Spinner.defaults = {}

	merge(Spinner.prototype, {
	spin: function(target) {
	this.stop()
	var self = this
	, o = self.opts
	, el = self.el = css(createEl(0, {className: o.className}), {position: o.position, width: 0, zIndex: o.zIndex})
	, mid = o.radius+o.length+o.width
	, ep // element position
	, tp // target position

	if (target) {
	target.insertBefore(el, target.firstChild\|\|null)
	tp = pos(target)
	ep = pos(el)
	css(el, {
	left: (o.left == 'auto' ? tp.x-ep.x + (target.offsetWidth >> 1) : parseInt(o.left, 10) + mid) + 'px',
	top: (o.top == 'auto' ? tp.y-ep.y + (target.offsetHeight >> 1) : parseInt(o.top, 10) + mid) + 'px'
	})
	}

	el.setAttribute('aria-role', 'progressbar')
	self.lines(el, self.opts)

	if (!useCssAnimations) {
	// No CSS animation support, use setTimeout() instead
	var i = 0
	, fps = o.fps
	, f = fps/o.speed
	, ostep = (1-o.opacity) / (f*o.trail / 100)
	, astep = f/o.lines

	;(function anim() {
	i++;
	for (var s=o.lines; s; s--) {
	var alpha = Math.max(1-(i+sastep)%f ostep, o.opacity)
	self.opacity(el, o.lines-s, alpha, o)
	}
	self.timeout = self.el && setTimeout(anim, ~~(1000/fps))
	})()
	}
	return self
	},

	stop: function() {
	var el = this.el
	if (el) {
	clearTimeout(this.timeout)
	if (el.parentNode) el.parentNode.removeChild(el)
	this.el = undefined
	}
	return this
	},

	lines: function(el, o) {
	var i = 0
	, seg

	function fill(color, shadow) {
	return css(createEl(), {
	position: 'absolute',
	width: (o.length+o.width) + 'px',
	height: o.width + 'px',
	background: color,
	boxShadow: shadow,
	transformOrigin: 'left',
	transform: 'rotate(' + ~~(360/o.lines*i+o.rotate) + 'deg) translate(' + o.radius+'px' +',0)',
	borderRadius: (o.corners * o.width>>1) + 'px'
	})
	}

	for (; i < o.lines; i++) {
	seg = css(createEl(), {
	position: 'absolute',
	top: 1+~(o.width/2) + 'px',
	transform: o.hwaccel ? 'translate3d(0,0,0)' : '',
	opacity: o.opacity,
	animation: useCssAnimations && addAnimation(o.opacity, o.trail, i, o.lines) + ' ' + 1/o.speed + 's linear infinite'
	})

	if (o.shadow) ins(seg, css(fill('#000', '0 0 4px ' + '#000'), {top: 2+'px'}))

	ins(el, ins(seg, fill(o.color, '0 0 1px rgba(0,0,0,.1)')))
	}
	return el
	},

	opacity: function(el, i, val) {
	if (i < el.childNodes.length) el.childNodes[i].style.opacity = val
	}

	})

	/////////////////////////////////////////////////////////////////////////
	// VML rendering for IE
	/////////////////////////////////////////////////////////////////////////

	/**
	* Check and init VML support
	*/
	;(function() {

	function vml(tag, attr) {
	return createEl('<' + tag + ' xmlns="urn:schemas-microsoft.com:vml" class="spin-vml">', attr)
	}

	var s = css(createEl('group'), {behavior: 'url(#default#VML)'})

	if (!vendor(s, 'transform') && s.adj) {

	// VML support detected. Insert CSS rule ...
	sheet.addRule('.spin-vml', 'behavior:url(#default#VML)')

	Spinner.prototype.lines = function(el, o) {
	var r = o.length+o.width
	, s = 2*r

	function grp() {
	return css(
	vml('group', {
	coordsize: s + ' ' + s,
	coordorigin: -r + ' ' + -r
	}),
	{ width: s, height: s }
	)
	}

	var margin = -(o.width+o.length)*2 + 'px'
	, g = css(grp(), {position: 'absolute', top: margin, left: margin})
	, i

	function seg(i, dx, filter) {
	ins(g,
	ins(css(grp(), {rotation: 360 / o.lines * i + 'deg', left: ~~dx}),
	ins(css(vml('roundrect', {arcsize: o.corners}), {
	width: r,
	height: o.width,
	left: o.radius,
	top: -o.width>>1,
	filter: filter
	}),
	vml('fill', {color: o.color, opacity: o.opacity}),
	vml('stroke', {opacity: 0}) // transparent stroke to fix color bleeding upon opacity change
	)
	)
	)
	}

	if (o.shadow)
	for (i = 1; i <= o.lines; i++)
	seg(i, -2, 'progid:DXImageTransform.Microsoft.Blur(pixelradius=2,makeshadow=1,shadowopacity=.3)')

	for (i = 1; i <= o.lines; i++) seg(i)
	return ins(el, g)
	}

	Spinner.prototype.opacity = function(el, i, val, o) {
	var c = el.firstChild
	o = o.shadow && o.lines \|\| 0
	if (c && i+o < c.childNodes.length) {
	c = c.childNodes[i+o]; c = c && c.firstChild; c = c && c.firstChild
	if (c) c.opacity = val
	}
	}
	}
	else
	useCssAnimations = vendor(s, 'animation')
	})()

	if (typeof define == 'function' && define.amd)
	define(function() { return Spinner })
	else
	window.Spinner = Spinner

	}(window, document);