jquery/src/manipulation/buildFragment.js

JavaScript library for DOM operations

define( [
	"../core",
	"./var/rcheckableType",
	"./var/rtagName",
	"./var/rscriptType",
	"./var/rleadingWhitespace",
	"./createSafeFragment",
	"./wrapMap",
	"./getAll",
	"./setGlobalEval",
	"./support"
], function( jQuery, rcheckableType, rtagName, rscriptType, rleadingWhitespace,
	createSafeFragment, wrapMap, getAll, setGlobalEval, support ) {

var rhtml = /<|&#?\w+;/,
	rtbody = /<tbody/i;

function fixDefaultChecked( elem ) {
	if ( rcheckableType.test( elem.type ) ) {
		elem.defaultChecked = elem.checked;
	}
}

function buildFragment( elems, context, scripts, selection, ignored ) {
	var j, elem, contains,
		tmp, tag, tbody, wrap,
		l = elems.length,

		// Ensure a safe fragment
		safe = createSafeFragment( context ),

		nodes = [],
		i = 0;

	for ( ; i < l; i++ ) {
		elem = elems[ i ];

		if ( elem || elem === 0 ) {

			// Add nodes directly
			if ( jQuery.type( elem ) === "object" ) {
				jQuery.merge( nodes, elem.nodeType ? [ elem ] : elem );

			// Convert non-html into a text node
			} else if ( !rhtml.test( elem ) ) {
				nodes.push( context.createTextNode( elem ) );

			// Convert html into DOM nodes
			} else {
				tmp = tmp || safe.appendChild( context.createElement( "div" ) );

				// Deserialize a standard representation
				tag = ( rtagName.exec( elem ) || [ "", "" ] )[ 1 ].toLowerCase();
				wrap = wrapMap[ tag ] || wrapMap._default;

				tmp.innerHTML = wrap[ 1 ] + jQuery.htmlPrefilter( elem ) + wrap[ 2 ];

				// Descend through wrappers to the right content
				j = wrap[ 0 ];
				while ( j-- ) {
					tmp = tmp.lastChild;
				}

				// Manually add leading whitespace removed by IE
				if ( !support.leadingWhitespace && rleadingWhitespace.test( elem ) ) {
					nodes.push( context.createTextNode( rleadingWhitespace.exec( elem )[ 0 ] ) );
				}

				// Remove IE's autoinserted <tbody> from table fragments
				if ( !support.tbody ) {

					// String was a <table>, *may* have spurious <tbody>
					elem = tag === "table" && !rtbody.test( elem ) ?
						tmp.firstChild :

						// String was a bare <thead> or <tfoot>
						wrap[ 1 ] === "<table>" && !rtbody.test( elem ) ?
							tmp :
							0;

					j = elem && elem.childNodes.length;
					while ( j-- ) {
						if ( jQuery.nodeName( ( tbody = elem.childNodes[ j ] ), "tbody" ) &&
							!tbody.childNodes.length ) {

							elem.removeChild( tbody );
						}
					}
				}

				jQuery.merge( nodes, tmp.childNodes );

				// Fix #12392 for WebKit and IE > 9
				tmp.textContent = "";

				// Fix #12392 for oldIE
				while ( tmp.firstChild ) {
					tmp.removeChild( tmp.firstChild );
				}

				// Remember the top-level container for proper cleanup
				tmp = safe.lastChild;
			}
		}
	}

	// Fix #11356: Clear elements from fragment
	if ( tmp ) {
		safe.removeChild( tmp );
	}

	// Reset defaultChecked for any radios and checkboxes
	// about to be appended to the DOM in IE 6/7 (#8060)
	if ( !support.appendChecked ) {
		jQuery.grep( getAll( nodes, "input" ), fixDefaultChecked );
	}

	i = 0;
	while ( ( elem = nodes[ i++ ] ) ) {

		// Skip elements already in the context collection (trac-4087)
		if ( selection && jQuery.inArray( elem, selection ) > -1 ) {
			if ( ignored ) {
				ignored.push( elem );
			}

			continue;
		}

		contains = jQuery.contains( elem.ownerDocument, elem );

		// Append to fragment
		tmp = getAll( safe.appendChild( elem ), "script" );

		// Preserve script evaluation history
		if ( contains ) {
			setGlobalEval( tmp );
		}

		// Capture executables
		if ( scripts ) {
			j = 0;
			while ( ( elem = tmp[ j++ ] ) ) {
				if ( rscriptType.test( elem.type || "" ) ) {
					scripts.push( elem );
				}
			}
		}
	}

	tmp = null;

	return safe;
}

return buildFragment;
} );