Team:HFUT-China/jquerytmpl

(function( jQuery, undefined ){ var oldManip = jQuery.fn.domManip, tmplItmAtt = "_tmplitem", htmlExpr = /^[^<]*(<[\w\W]+>)[^>]*$|\{\{\! /, newTmplItems = {}, wrappedItems = {}, appendToTmplItems, topTmplItem = { key: 0, data: {} }, itemKey = 0, cloneIndex = 0, stack = [];

function newTmplItem( options, parentItem, fn, data ) { // Returns a template item data structure for a new rendered instance of a template (a 'template item'). // The content field is a hierarchical array of strings and nested items (to be // removed and replaced by nodes field of dom elements, once inserted in DOM). var newItem = { data: data || (data === 0 || data === false) ? data : (parentItem ? parentItem.data : {}), _wrap: parentItem ? parentItem._wrap : null, tmpl: null, parent: parentItem || null, nodes: [], calls: tiCalls, nest: tiNest, wrap: tiWrap, html: tiHtml, update: tiUpdate }; if ( options ) { jQuery.extend( newItem, options, { nodes: [], parent: parentItem }); } if ( fn ) { // Build the hierarchical content to be used during insertion into DOM newItem.tmpl = fn; newItem._ctnt = newItem._ctnt || newItem.tmpl( jQuery, newItem ); newItem.key = ++itemKey; // Keep track of new template item, until it is stored as jQuery Data on DOM element (stack.length ? wrappedItems : newTmplItems)[itemKey] = newItem; } return newItem; }

// Override appendTo etc., in order to provide support for targeting multiple elements. (This code would disappear if integrated in jquery core). jQuery.each({ appendTo: "append", prependTo: "prepend", insertBefore: "before", insertAfter: "after", replaceAll: "replaceWith" }, function( name, original ) { jQuery.fn[ name ] = function( selector ) { var ret = [], insert = jQuery( selector ), elems, i, l, tmplItems, parent = this.length === 1 && this[0].parentNode;

appendToTmplItems = newTmplItems || {}; if ( parent && parent.nodeType === 11 && parent.childNodes.length === 1 && insert.length === 1 ) { insert[ original ]( this[0] ); ret = this; } else { for ( i = 0, l = insert.length; i < l; i++ ) { cloneIndex = i; elems = (i > 0 ? this.clone(true) : this).get(); jQuery( insert[i] )[ original ]( elems ); ret = ret.concat( elems ); } cloneIndex = 0; ret = this.pushStack( ret, name, insert.selector ); } tmplItems = appendToTmplItems; appendToTmplItems = null; jQuery.tmpl.complete( tmplItems ); return ret; }; });

jQuery.fn.extend({ // Use first wrapped element as template markup. // Return wrapped set of template items, obtained by rendering template against data. tmpl: function( data, options, parentItem ) { return jQuery.tmpl( this[0], data, options, parentItem ); },

// Find which rendered template item the first wrapped DOM element belongs to tmplItem: function() { return jQuery.tmplItem( this[0] ); },

// Consider the first wrapped element as a template declaration, and get the compiled template or store it as a named template. template: function( name ) { return jQuery.template( name, this[0] ); },

domManip: function( args, table, callback, options ) { if ( args[0] && jQuery.isArray( args[0] )) { var dmArgs = jQuery.makeArray( arguments ), elems = args[0], elemsLength = elems.length, i = 0, tmplItem; while ( i < elemsLength && !(tmplItem = jQuery.data( elems[i++], "tmplItem" ))) {} if ( tmplItem && cloneIndex ) { dmArgs[2] = function( fragClone ) { // Handler called by oldManip when rendered template has been inserted into DOM. jQuery.tmpl.afterManip( this, fragClone, callback ); }; } oldManip.apply( this, dmArgs ); } else { oldManip.apply( this, arguments ); } cloneIndex = 0; if ( !appendToTmplItems ) { jQuery.tmpl.complete( newTmplItems ); } return this; } });

jQuery.extend({ // Return wrapped set of template items, obtained by rendering template against data. tmpl: function( tmpl, data, options, parentItem ) { var ret, topLevel = !parentItem; if ( topLevel ) { // This is a top-level tmpl call (not from a nested template using Template:Tmpl) parentItem = topTmplItem; tmpl = jQuery.template[tmpl] || jQuery.template( null, tmpl ); wrappedItems = {}; // Any wrapped items will be rebuilt, since this is top level } else if ( !tmpl ) { // The template item is already associated with DOM - this is a refresh. // Re-evaluate rendered template for the parentItem tmpl = parentItem.tmpl; newTmplItems[parentItem.key] = parentItem; parentItem.nodes = []; if ( parentItem.wrapped ) { updateWrapped( parentItem, parentItem.wrapped ); } // Rebuild, without creating a new template item return jQuery( build( parentItem, null, parentItem.tmpl( jQuery, parentItem ) )); } if ( !tmpl ) { return []; // Could throw... } if ( typeof data === "function" ) { data = data.call( parentItem || {} ); } if ( options && options.wrapped ) { updateWrapped( options, options.wrapped ); } ret = jQuery.isArray( data ) ? jQuery.map( data, function( dataItem ) { return dataItem ? newTmplItem( options, parentItem, tmpl, dataItem ) : null; }) : [ newTmplItem( options, parentItem, tmpl, data ) ]; return topLevel ? jQuery( build( parentItem, null, ret ) ) : ret; },

// Return rendered template item for an element. tmplItem: function( elem ) { var tmplItem; if ( elem instanceof jQuery ) { elem = elem[0]; } while ( elem && elem.nodeType === 1 && !(tmplItem = jQuery.data( elem, "tmplItem" )) && (elem = elem.parentNode) ) {} return tmplItem || topTmplItem; },

// Set: // Use $.template( name, tmpl ) to cache a named template, // where tmpl is a template string, a script element or a jQuery instance wrapping a script element, etc. // Use $( "selector" ).template( name ) to provide access by name to a script block template declaration.

// Get: // Use $.template( name ) to access a cached template. // Also $( selectorToScriptBlock ).template(), or $.template( null, templateString ) // will return the compiled template, without adding a name reference. // If templateString includes at least one HTML tag, $.template( templateString ) is equivalent // to $.template( null, templateString ) template: function( name, tmpl ) { if (tmpl) { // Compile template and associate with name if ( typeof tmpl === "string" ) { // This is an HTML string being passed directly in. tmpl = buildTmplFn( tmpl ); } else if ( tmpl instanceof jQuery ) { tmpl = tmpl[0] || {}; } if ( tmpl.nodeType ) { // If this is a template block, use cached copy, or generate tmpl function and cache. tmpl = jQuery.data( tmpl, "tmpl" ) || jQuery.data( tmpl, "tmpl", buildTmplFn( tmpl.innerHTML )); // Issue: In IE, if the container element is not a script block, the innerHTML will remove quotes from attribute values whenever the value does not include white space. // This means that foo="${x}" will not work if the value of x includes white space: foo="${x}" -> foo=value of x. // To correct this, include space in tag: foo="${ x }" -> foo="value of x" } return typeof name === "string" ? (jQuery.template[name] = tmpl) : tmpl; } // Return named compiled template return name ? (typeof name !== "string" ? jQuery.template( null, name ): (jQuery.template[name] || // If not in map, and not containing at least on HTML tag, treat as a selector. // (If integrated with core, use quickExpr.exec) jQuery.template( null, htmlExpr.test( name ) ? name : jQuery( name )))) : null; },

encode: function( text ) { // Do HTML encoding replacing < > & and ' and " by corresponding entities. return ("" + text).split("<").join("<").split(">").join(">").split('"').join(""").split("'").join("'"); } });

jQuery.extend( jQuery.tmpl, { tag: { "tmpl": { _default: { $2: "null" }, open: "if($notnull_1){__=__.concat($item.nest($1,$2));}" // tmpl target parameter can be of type function, so use $1, not $1a (so not auto detection of functions) // This means that Template:Tmpl foo treats foo as a template (which IS a function). // Explicit parens can be used if foo is a function that returns a template: Template:Tmpl foo(). }, "wrap": { _default: { $2: "null" }, open: "$item.calls(__,$1,$2);__=[];", close: "call=$item.calls();__=call._.concat($item.wrap(call,__));" }, "each": { _default: { $2: "$index, $value" }, open: "if($notnull_1){$.each($1a,function($2){with(this){", close: "}});}" }, "if": { open: "if(($notnull_1) && $1a){", close: "}" }, "else": { _default: { $1: "true" }, open: "}else if(($notnull_1) && $1a){" }, "html": { // Unecoded expression evaluation. open: "if($notnull_1){__.push($1a);}" }, "=": { // Encoded expression evaluation. Abbreviated form is ${}. _default: { $1: "$data" }, open: "if($notnull_1){__.push($.encode($1a));}" }, "!": { // Comment tag. Skipped by parser open: "" } },

// This stub can be overridden, e.g. in jquery.tmplPlus for providing rendered events complete: function( items ) { newTmplItems = {}; },

// Call this from code which overrides domManip, or equivalent // Manage cloning/storing template items etc. afterManip: function afterManip( elem, fragClone, callback ) { // Provides cloned fragment ready for fixup prior to and after insertion into DOM var content = fragClone.nodeType === 11 ? jQuery.makeArray(fragClone.childNodes) : fragClone.nodeType === 1 ? [fragClone] : [];

// Return fragment to original caller (e.g. append) for DOM insertion callback.call( elem, fragClone );

// Fragment has been inserted:- Add inserted nodes to tmplItem data structure. Replace inserted element annotations by jQuery.data. storeTmplItems( content ); cloneIndex++; } });

//========================== Private helper functions, used by code above ==========================

function build( tmplItem, nested, content ) { // Convert hierarchical content into flat string array // and finally return array of fragments ready for DOM insertion var frag, ret = content ? jQuery.map( content, function( item ) { return (typeof item === "string") ? // Insert template item annotations, to be converted to jQuery.data( "tmplItem" ) when elems are inserted into DOM. (tmplItem.key ? item.replace( /(<\w+)(?=[\s>])(?![^>]*_tmplitem)([^>]*)/g, "$1 " + tmplItmAtt + "=\"" + tmplItem.key + "\" $2" ) : item) : // This is a child template item. Build nested template. build( item, tmplItem, item._ctnt ); }) : // If content is not defined, insert tmplItem directly. Not a template item. May be a string, or a string array, e.g. from Template:Html $item.html(). tmplItem; if ( nested ) { return ret; }

// top-level template ret = ret.join("");

// Support templates which have initial or final text nodes, or consist only of text // Also support HTML entities within the HTML markup. ret.replace( /^\s*([^<\s][^<]*)?(<[\w\W]+>)([^>]*[^>\s])?\s*$/, function( all, before, middle, after) { frag = jQuery( middle ).get();

storeTmplItems( frag ); if ( before ) { frag = unencode( before ).concat(frag); } if ( after ) { frag = frag.concat(unencode( after )); } }); return frag ? frag : unencode( ret ); }

function unencode( text ) { // Use createElement, since createTextNode will not render HTML entities correctly var el = document.createElement( "div" ); el.innerHTML = text; return jQuery.makeArray(el.childNodes); }

// Generate a reusable function that will serve to render a template against data function buildTmplFn( markup ) { return new Function("jQuery","$item", // Use the variable __ to hold a string array while building the compiled template. (See https://github.com/jquery/jquery-tmpl/issues#issue/10). "var $=jQuery,call,__=[],$data=$item.data;" +

// Introduce the data as local variables using with(){} "with($data){__.push('" +

// Convert the template into pure JavaScript jQuery.trim(markup) .replace( /([\\'])/g, "\\$1" ) .replace( /[\r\t\n]/g, " " ) .replace( /\$\{([^\}]*)\}/g, "Template:= $1" ) .replace( /\{\{(\/?)(\w+|.)(?:\(((?:[^\}]|\}(?!\}))*?)?\))?(?:\s+(.*?)?)?(\(((?:[^\}]|\}(?!\}))*?)\))?\s*\}\}/g, function( all, slash, type, fnargs, target, parens, args ) { var tag = jQuery.tmpl.tag[ type ], def, expr, exprAutoFnDetect; if ( !tag ) { throw "Unknown template tag: " + type; } def = tag._default || []; if ( parens && !/\w$/.test(target)) { target += parens; parens = ""; } if ( target ) { target = unescape( target ); args = args ? ("," + unescape( args ) + ")") : (parens ? ")" : ""); // Support for target being things like a.toLowerCase(); // In that case don't call with template item as 'this' pointer. Just evaluate... expr = parens ? (target.indexOf(".") > -1 ? target + unescape( parens ) : ("(" + target + ").call($item" + args)) : target; exprAutoFnDetect = parens ? expr : "(typeof(" + target + ")==='function'?(" + target + ").call($item):(" + target + "))"; } else { exprAutoFnDetect = expr = def.$1 || "null"; } fnargs = unescape( fnargs ); return "');" + tag[ slash ? "close" : "open" ] .split( "$notnull_1" ).join( target ? "typeof(" + target + ")!=='undefined' && (" + target + ")!=null" : "true" ) .split( "$1a" ).join( exprAutoFnDetect ) .split( "$1" ).join( expr ) .split( "$2" ).join( fnargs || def.$2 || "" ) + "__.push('"; }) + "');}return __;" ); } function updateWrapped( options, wrapped ) { // Build the wrapped content. options._wrap = build( options, true, // Suport imperative scenario in which options.wrapped can be set to a selector or an HTML string. jQuery.isArray( wrapped ) ? wrapped : [htmlExpr.test( wrapped ) ? wrapped : jQuery( wrapped ).html()] ).join(""); }

function unescape( args ) { return args ? args.replace( /\\'/g, "'").replace(/\\\\/g, "\\" ) : null; } function outerHtml( elem ) { var div = document.createElement("div"); div.appendChild( elem.cloneNode(true) ); return div.innerHTML; }

// Store template items in jQuery.data(), ensuring a unique tmplItem data data structure for each rendered template instance. function storeTmplItems( content ) { var keySuffix = "_" + cloneIndex, elem, elems, newClonedItems = {}, i, l, m; for ( i = 0, l = content.length; i < l; i++ ) { if ( (elem = content[i]).nodeType !== 1 ) { continue; } elems = elem.getElementsByTagName("*"); for ( m = elems.length - 1; m >= 0; m-- ) { processItemKey( elems[m] ); } processItemKey( elem ); } function processItemKey( el ) { var pntKey, pntNode = el, pntItem, tmplItem, key; // Ensure that each rendered template inserted into the DOM has its own template item, if ( (key = el.getAttribute( tmplItmAtt ))) { while ( pntNode.parentNode && (pntNode = pntNode.parentNode).nodeType === 1 && !(pntKey = pntNode.getAttribute( tmplItmAtt ))) { } if ( pntKey !== key ) { // The next ancestor with a _tmplitem expando is on a different key than this one. // So this is a top-level element within this template item // Set pntNode to the key of the parentNode, or to 0 if pntNode.parentNode is null, or pntNode is a fragment. pntNode = pntNode.parentNode ? (pntNode.nodeType === 11 ? 0 : (pntNode.getAttribute( tmplItmAtt ) || 0)) : 0; if ( !(tmplItem = newTmplItems[key]) ) { // The item is for wrapped content, and was copied from the temporary parent wrappedItem. tmplItem = wrappedItems[key]; tmplItem = newTmplItem( tmplItem, newTmplItems[pntNode]||wrappedItems[pntNode] ); tmplItem.key = ++itemKey; newTmplItems[itemKey] = tmplItem; } if ( cloneIndex ) { cloneTmplItem( key ); } } el.removeAttribute( tmplItmAtt ); } else if ( cloneIndex && (tmplItem = jQuery.data( el, "tmplItem" )) ) { // This was a rendered element, cloned during append or appendTo etc. // TmplItem stored in jQuery data has already been cloned in cloneCopyEvent. We must replace it with a fresh cloned tmplItem. cloneTmplItem( tmplItem.key ); newTmplItems[tmplItem.key] = tmplItem; pntNode = jQuery.data( el.parentNode, "tmplItem" ); pntNode = pntNode ? pntNode.key : 0; } if ( tmplItem ) { pntItem = tmplItem; // Find the template item of the parent element. // (Using !=, not !==, since pntItem.key is number, and pntNode may be a string) while ( pntItem && pntItem.key != pntNode ) { // Add this element as a top-level node for this rendered template item, as well as for any // ancestor items between this item and the item of its parent element pntItem.nodes.push( el ); pntItem = pntItem.parent; } // Delete content built during rendering - reduce API surface area and memory use, and avoid exposing of stale data after rendering... delete tmplItem._ctnt; delete tmplItem._wrap; // Store template item as jQuery data on the element jQuery.data( el, "tmplItem", tmplItem ); } function cloneTmplItem( key ) { key = key + keySuffix; tmplItem = newClonedItems[key] = (newClonedItems[key] || newTmplItem( tmplItem, newTmplItems[tmplItem.parent.key + keySuffix] || tmplItem.parent )); } } }

//---- Helper functions for template item ----

function tiCalls( content, tmpl, data, options ) { if ( !content ) { return stack.pop(); } stack.push({ _: content, tmpl: tmpl, item:this, data: data, options: options }); }

function tiNest( tmpl, data, options ) { // nested template, using Template:Tmpl tag return jQuery.tmpl( jQuery.template( tmpl ), data, options, this ); }

function tiWrap( call, wrapped ) { // nested template, using Template:Wrap tag var options = call.options || {}; options.wrapped = wrapped; // Apply the template, which may incorporate wrapped content, return jQuery.tmpl( jQuery.template( call.tmpl ), call.data, options, call.item ); }

function tiHtml( filter, textOnly ) { var wrapped = this._wrap; return jQuery.map( jQuery( jQuery.isArray( wrapped ) ? wrapped.join("") : wrapped ).filter( filter || "*" ), function(e) { return textOnly ? e.innerText || e.textContent : e.outerHTML || outerHtml(e); }); }

function tiUpdate() { var coll = this.nodes; jQuery.tmpl( null, null, null, this).insertBefore( coll[0] ); jQuery( coll ).remove(); } })( jQuery );