define([
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"../core",
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"../var/support"
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], function( jQuery, support ) {
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(function() {
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// Minified: var b,c,d,e,f,g, h,i
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var div, style, a, pixelPositionVal, boxSizingReliableVal,
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reliableHiddenOffsetsVal, reliableMarginRightVal;
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// Setup
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div = document.createElement( "div" );
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div.innerHTML = " <link/><table></table><a href='/a'>a</a><input type='checkbox'/>";
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a = div.getElementsByTagName( "a" )[ 0 ];
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style = a && a.style;
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// Finish early in limited (non-browser) environments
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if ( !style ) {
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return;
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}
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style.cssText = "float:left;opacity:.5";
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// Support: IE<9
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// Make sure that element opacity exists (as opposed to filter)
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support.opacity = style.opacity === "0.5";
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// Verify style float existence
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// (IE uses styleFloat instead of cssFloat)
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support.cssFloat = !!style.cssFloat;
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div.style.backgroundClip = "content-box";
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div.cloneNode( true ).style.backgroundClip = "";
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support.clearCloneStyle = div.style.backgroundClip === "content-box";
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// Support: Firefox<29, Android 2.3
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// Vendor-prefix box-sizing
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support.boxSizing = style.boxSizing === "" || style.MozBoxSizing === "" ||
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style.WebkitBoxSizing === "";
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jQuery.extend(support, {
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reliableHiddenOffsets: function() {
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if ( reliableHiddenOffsetsVal == null ) {
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computeStyleTests();
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}
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return reliableHiddenOffsetsVal;
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},
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boxSizingReliable: function() {
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if ( boxSizingReliableVal == null ) {
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computeStyleTests();
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}
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return boxSizingReliableVal;
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},
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pixelPosition: function() {
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if ( pixelPositionVal == null ) {
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computeStyleTests();
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}
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return pixelPositionVal;
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},
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// Support: Android 2.3
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reliableMarginRight: function() {
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if ( reliableMarginRightVal == null ) {
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computeStyleTests();
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}
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return reliableMarginRightVal;
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}
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});
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function computeStyleTests() {
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// Minified: var b,c,d,j
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var div, body, container, contents;
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body = document.getElementsByTagName( "body" )[ 0 ];
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if ( !body || !body.style ) {
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// Test fired too early or in an unsupported environment, exit.
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return;
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}
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// Setup
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div = document.createElement( "div" );
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container = document.createElement( "div" );
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container.style.cssText = "position:absolute;border:0;width:0;height:0;top:0;left:-9999px";
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body.appendChild( container ).appendChild( div );
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div.style.cssText =
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// Support: Firefox<29, Android 2.3
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// Vendor-prefix box-sizing
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"-webkit-box-sizing:border-box;-moz-box-sizing:border-box;" +
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"box-sizing:border-box;display:block;margin-top:1%;top:1%;" +
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"border:1px;padding:1px;width:4px;position:absolute";
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// Support: IE<9
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// Assume reasonable values in the absence of getComputedStyle
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pixelPositionVal = boxSizingReliableVal = false;
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reliableMarginRightVal = true;
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// Check for getComputedStyle so that this code is not run in IE<9.
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if ( window.getComputedStyle ) {
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pixelPositionVal = ( window.getComputedStyle( div, null ) || {} ).top !== "1%";
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boxSizingReliableVal =
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( window.getComputedStyle( div, null ) || { width: "4px" } ).width === "4px";
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// Support: Android 2.3
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// Div with explicit width and no margin-right incorrectly
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// gets computed margin-right based on width of container (#3333)
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// WebKit Bug 13343 - getComputedStyle returns wrong value for margin-right
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contents = div.appendChild( document.createElement( "div" ) );
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// Reset CSS: box-sizing; display; margin; border; padding
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contents.style.cssText = div.style.cssText =
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// Support: Firefox<29, Android 2.3
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// Vendor-prefix box-sizing
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"-webkit-box-sizing:content-box;-moz-box-sizing:content-box;" +
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"box-sizing:content-box;display:block;margin:0;border:0;padding:0";
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contents.style.marginRight = contents.style.width = "0";
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div.style.width = "1px";
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reliableMarginRightVal =
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!parseFloat( ( window.getComputedStyle( contents, null ) || {} ).marginRight );
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div.removeChild( contents );
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}
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// Support: IE8
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// Check if table cells still have offsetWidth/Height when they are set
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// to display:none and there are still other visible table cells in a
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// table row; if so, offsetWidth/Height are not reliable for use when
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// determining if an element has been hidden directly using
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// display:none (it is still safe to use offsets if a parent element is
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// hidden; don safety goggles and see bug #4512 for more information).
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div.innerHTML = "<table><tr><td></td><td>t</td></tr></table>";
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contents = div.getElementsByTagName( "td" );
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contents[ 0 ].style.cssText = "margin:0;border:0;padding:0;display:none";
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reliableHiddenOffsetsVal = contents[ 0 ].offsetHeight === 0;
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if ( reliableHiddenOffsetsVal ) {
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contents[ 0 ].style.display = "";
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contents[ 1 ].style.display = "none";
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reliableHiddenOffsetsVal = contents[ 0 ].offsetHeight === 0;
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}
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body.removeChild( container );
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}
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})();
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return support;
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});
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