src/manipulation/buildFragment.js

   1 import { jQuery } from "../core.js";
   2 import { toType } from "../core/toType.js";
   3 import { isAttached } from "../core/isAttached.js";
   4 import { arr } from "../var/arr.js";
   5 import { rtagName } from "./var/rtagName.js";
   6 import { rscriptType } from "./var/rscriptType.js";
   7 import { wrapMap } from "./wrapMap.js";
   8 import { getAll } from "./getAll.js";
   9 import { setGlobalEval } from "./setGlobalEval.js";
  10 import { isArrayLike } from "../core/isArrayLike.js";
  11
  12 var rhtml = /<|&#?\w+;/;
  13
  14 export function buildFragment( elems, context, scripts, selection, ignored ) {
  15         var elem, tmp, tag, wrap, attached, j,
  16                 fragment = context.createDocumentFragment(),
  17                 nodes = [],
  18                 i = 0,
  19                 l = elems.length;
  20
  21         for ( ; i < l; i++ ) {
  22                 elem = elems[ i ];
  23
  24                 if ( elem || elem === 0 ) {
  25
  26                         // Add nodes directly
  27                         if ( toType( elem ) === "object" && ( elem.nodeType || isArrayLike( elem ) ) ) {
  28                                 jQuery.merge( nodes, elem.nodeType ? [ elem ] : elem );
  29
  30                         // Convert non-html into a text node
  31                         } else if ( !rhtml.test( elem ) ) {
  32                                 nodes.push( context.createTextNode( elem ) );
  33
  34                         // Convert html into DOM nodes
  35                         } else {
  36                                 tmp = tmp || fragment.appendChild( context.createElement( "div" ) );
  37
  38                                 // Deserialize a standard representation
  39                                 tag = ( rtagName.exec( elem ) || [ "", "" ] )[ 1 ].toLowerCase();
  40                                 wrap = wrapMap[ tag ] || arr;
  41
  42                                 // Create wrappers & descend into them.
  43                                 j = wrap.length;
  44                                 while ( --j > -1 ) {
  45                                         tmp = tmp.appendChild( context.createElement( wrap[ j ] ) );
  46                                 }
  47
  48                                 tmp.innerHTML = jQuery.htmlPrefilter( elem );
  49
  50                                 jQuery.merge( nodes, tmp.childNodes );
  51
  52                                 // Remember the top-level container
  53                                 tmp = fragment.firstChild;
  54
  55                                 // Ensure the created nodes are orphaned (trac-12392)
  56                                 tmp.textContent = "";
  57                         }
  58                 }
  59         }
  60
  61         // Remove wrapper from fragment
  62         fragment.textContent = "";
  63
  64         i = 0;
  65         while ( ( elem = nodes[ i++ ] ) ) {
  66
  67                 // Skip elements already in the context collection (trac-4087)
  68                 if ( selection && jQuery.inArray( elem, selection ) > -1 ) {
  69                         if ( ignored ) {
  70                                 ignored.push( elem );
  71                         }
  72                         continue;
  73                 }
  74
  75                 attached = isAttached( elem );
  76
  77                 // Append to fragment
  78                 tmp = getAll( fragment.appendChild( elem ), "script" );
  79
  80                 // Preserve script evaluation history
  81                 if ( attached ) {
  82                         setGlobalEval( tmp );
  83                 }
  84
  85                 // Capture executables
  86                 if ( scripts ) {
  87                         j = 0;
  88                         while ( ( elem = tmp[ j++ ] ) ) {
  89                                 if ( rscriptType.test( elem.type || "" ) ) {
  90                                         scripts.push( elem );
  91                                 }
  92                         }
  93                 }
  94         }
  95
  96         return fragment;
  97 }