krafthaus/bauhaus

define([
    "../core",
    "../var/support"
], function( jQuery, support ) {

(function() {
    // Minified: var b,c,d,e,f,g, h,i
    var div, style, a, pixelPositionVal, boxSizingReliableVal,
        reliableHiddenOffsetsVal, reliableMarginRightVal;

    // Setup
    div = document.createElement( "div" );
    div.innerHTML = "  <link/><table></table><a href='/a'>a</a><input type='checkbox'/>";
    a = div.getElementsByTagName( "a" )[ 0 ];
    style = a && a.style;

    // Finish early in limited (non-browser) environments
    if ( !style ) {
        return;
    }

    style.cssText = "float:left;opacity:.5";

    // Support: IE<9
    // Make sure that element opacity exists (as opposed to filter)
    support.opacity = style.opacity === "0.5";

    // Verify style float existence
    // (IE uses styleFloat instead of cssFloat)
    support.cssFloat = !!style.cssFloat;

    div.style.backgroundClip = "content-box";
    div.cloneNode( true ).style.backgroundClip = "";
    support.clearCloneStyle = div.style.backgroundClip === "content-box";

    // Support: Firefox<29, Android 2.3
    // Vendor-prefix box-sizing
    support.boxSizing = style.boxSizing === "" || style.MozBoxSizing === "" ||
        style.WebkitBoxSizing === "";

    jQuery.extend(support, {
        reliableHiddenOffsets: function() {
            if ( reliableHiddenOffsetsVal == null ) {
                computeStyleTests();
            }
            return reliableHiddenOffsetsVal;
        },

        boxSizingReliable: function() {
            if ( boxSizingReliableVal == null ) {
                computeStyleTests();
            }
            return boxSizingReliableVal;
        },

        pixelPosition: function() {
            if ( pixelPositionVal == null ) {
                computeStyleTests();
            }
            return pixelPositionVal;
        },

        // Support: Android 2.3
        reliableMarginRight: function() {
            if ( reliableMarginRightVal == null ) {
                computeStyleTests();
            }
            return reliableMarginRightVal;
        }
    });

    function computeStyleTests() {
        // Minified: var b,c,d,j
        var div, body, container, contents;

        body = document.getElementsByTagName( "body" )[ 0 ];
        if ( !body || !body.style ) {
            // Test fired too early or in an unsupported environment, exit.
            return;
        }

        // Setup
        div = document.createElement( "div" );
        container = document.createElement( "div" );
        container.style.cssText = "position:absolute;border:0;width:0;height:0;top:0;left:-9999px";
        body.appendChild( container ).appendChild( div );

        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;display:block;margin-top:1%;top:1%;" +
            "border:1px;padding:1px;width:4px;position:absolute";

        // Support: IE<9
        // Assume reasonable values in the absence of getComputedStyle
        pixelPositionVal = boxSizingReliableVal = false;
        reliableMarginRightVal = true;

        // Check for getComputedStyle so that this code is not run in IE<9.
        if ( window.getComputedStyle ) {
            pixelPositionVal = ( window.getComputedStyle( div, null ) || {} ).top !== "1%";
            boxSizingReliableVal =
                ( window.getComputedStyle( div, null ) || { width: "4px" } ).width === "4px";

            // Support: Android 2.3
            // 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
            contents = div.appendChild( document.createElement( "div" ) );

            // Reset CSS: box-sizing; display; margin; border; padding
            contents.style.cssText = div.style.cssText =
                // Support: Firefox<29, Android 2.3
                // Vendor-prefix box-sizing
                "-webkit-box-sizing:content-box;-moz-box-sizing:content-box;" +
                "box-sizing:content-box;display:block;margin:0;border:0;padding:0";
            contents.style.marginRight = contents.style.width = "0";
            div.style.width = "1px";

            reliableMarginRightVal =
                !parseFloat( ( window.getComputedStyle( contents, null ) || {} ).marginRight );
        }

        // Support: IE8
        // Check if table cells still have offsetWidth/Height when they are set
        // to display:none and there are still other visible table cells in a
        // table row; if so, offsetWidth/Height are not reliable for use when
        // determining if an element has been hidden directly using
        // display:none (it is still safe to use offsets if a parent element is
        // hidden; don safety goggles and see bug #4512 for more information).
        div.innerHTML = "<table><tr><td></td><td>t</td></tr></table>";
        contents = div.getElementsByTagName( "td" );
        contents[ 0 ].style.cssText = "margin:0;border:0;padding:0;display:none";
        reliableHiddenOffsetsVal = contents[ 0 ].offsetHeight === 0;
        if ( reliableHiddenOffsetsVal ) {
            contents[ 0 ].style.display = "";
            contents[ 1 ].style.display = "none";
            reliableHiddenOffsetsVal = contents[ 0 ].offsetHeight === 0;
        }

        body.removeChild( container );
    }

})();

return support;

});