SGH / COMPONENTS

  define( [

  	"../core",

  	"../var/document",
  	"../var/documentElement",

  	"../var/support"

  ], function( jQuery, document, documentElement, support ) {

  ( function() {
  	var pixelPositionVal, boxSizingReliableVal, pixelMarginRightVal, reliableMarginLeftVal,

  		container = document.createElement( "div" ),
  		div = document.createElement( "div" );
  

  	// Finish early in limited (non-browser) environments

  	if ( !div.style ) {
  		return;
  	}
  
  	// Support: IE9-11+
  	// Style of cloned element affects source element cloned (#8908)
  	div.style.backgroundClip = "content-box";
  	div.cloneNode( true ).style.backgroundClip = "";
  	support.clearCloneStyle = div.style.backgroundClip === "content-box";
  

  	container.style.cssText = "border:0;width:8px;height:0;top:0;left:-9999px;" +
  		"padding:0;margin-top:1px;position:absolute";

  	container.appendChild( div );
  
  	// Executing both pixelPosition & boxSizingReliable tests require only one layout
  	// so they're executed at the same time to save the second computation.

  	function computeStyleTests() {

  		div.style.cssText =

  			// Support: Firefox<29, Android 2.3
  			// Vendor-prefix box-sizing

  			"-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;" +
  			"position:relative;display:block;" +
  			"margin:auto;border:1px;padding:1px;" +
  			"top:1%;width:50%";

  		div.innerHTML = "";

  		documentElement.appendChild( container );

  		var divStyle = window.getComputedStyle( div );

  		pixelPositionVal = divStyle.top !== "1%";

  		reliableMarginLeftVal = divStyle.marginLeft === "2px";

  		boxSizingReliableVal = divStyle.width === "4px";
  

  		// Support: Android 4.0 - 4.3 only
  		// Some styles come back with percentage values, even though they shouldn't
  		div.style.marginRight = "50%";
  		pixelMarginRightVal = divStyle.marginRight === "4px";
  
  		documentElement.removeChild( container );

  	}
  

  	jQuery.extend( support, {
  		pixelPosition: function() {
  
  			// This test is executed only once but we still do memoizing
  			// since we can use the boxSizingReliable pre-computing.
  			// No need to check if the test was already performed, though.
  			computeStyleTests();
  			return pixelPositionVal;
  		},
  		boxSizingReliable: function() {
  			if ( boxSizingReliableVal == null ) {
  				computeStyleTests();
  			}
  			return boxSizingReliableVal;
  		},
  		pixelMarginRight: function() {
  
  			// Support: Android 4.0-4.3
  			// We're checking for boxSizingReliableVal here instead of pixelMarginRightVal
  			// since that compresses better and they're computed together anyway.
  			if ( boxSizingReliableVal == null ) {
  				computeStyleTests();
  			}
  			return pixelMarginRightVal;
  		},
  		reliableMarginLeft: function() {

  			// Support: IE <=8 only, Android 4.0 - 4.3 only, Firefox <=3 - 37
  			if ( boxSizingReliableVal == null ) {
  				computeStyleTests();

  			}

  			return reliableMarginLeftVal;
  		},
  		reliableMarginRight: function() {
  
  			// Support: Android 2.3
  			// Check if div with explicit width and no margin-right incorrectly
  			// gets computed margin-right based on width of container. (#3333)
  			// WebKit Bug 13343 - getComputedStyle returns wrong value for margin-right
  			// This support function is only executed once so no memoizing is needed.
  			var ret,
  				marginDiv = div.appendChild( document.createElement( "div" ) );
  
  			// Reset CSS: box-sizing; display; margin; border; padding
  			marginDiv.style.cssText = div.style.cssText =
  
  				// Support: Android 2.3
  				// Vendor-prefix box-sizing
  				"-webkit-box-sizing:content-box;box-sizing:content-box;" +
  				"display:block;margin:0;border:0;padding:0";
  			marginDiv.style.marginRight = marginDiv.style.width = "0";
  			div.style.width = "1px";
  			documentElement.appendChild( container );
  
  			ret = !parseFloat( window.getComputedStyle( marginDiv ).marginRight );
  
  			documentElement.removeChild( container );
  			div.removeChild( marginDiv );
  
  			return ret;
  		}
  	} );
  } )();

  
  return support;
  

  } );