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563 lines
21 KiB
JavaScript
563 lines
21 KiB
JavaScript
/*
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Copyright (c) 2004-2011, The Dojo Foundation All Rights Reserved.
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Available via Academic Free License >= 2.1 OR the modified BSD license.
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see: http://dojotoolkit.org/license for details
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*/
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if(!dojo._hasResource["dojo.parser"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
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dojo._hasResource["dojo.parser"] = true;
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dojo.provide("dojo.parser");
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dojo.require("dojo.date.stamp");
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new Date("X"); // workaround for #11279, new Date("") == NaN
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dojo.parser = new function(){
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// summary:
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// The Dom/Widget parsing package
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var d = dojo;
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function val2type(/*Object*/ value){
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// summary:
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// Returns name of type of given value.
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if(d.isString(value)){ return "string"; }
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if(typeof value == "number"){ return "number"; }
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if(typeof value == "boolean"){ return "boolean"; }
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if(d.isFunction(value)){ return "function"; }
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if(d.isArray(value)){ return "array"; } // typeof [] == "object"
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if(value instanceof Date) { return "date"; } // assume timestamp
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if(value instanceof d._Url){ return "url"; }
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return "object";
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}
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function str2obj(/*String*/ value, /*String*/ type){
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// summary:
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// Convert given string value to given type
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switch(type){
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case "string":
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return value;
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case "number":
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return value.length ? Number(value) : NaN;
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case "boolean":
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// for checked/disabled value might be "" or "checked". interpret as true.
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return typeof value == "boolean" ? value : !(value.toLowerCase()=="false");
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case "function":
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if(d.isFunction(value)){
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// IE gives us a function, even when we say something like onClick="foo"
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// (in which case it gives us an invalid function "function(){ foo }").
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// Therefore, convert to string
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value=value.toString();
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value=d.trim(value.substring(value.indexOf('{')+1, value.length-1));
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}
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try{
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if(value === "" || value.search(/[^\w\.]+/i) != -1){
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// The user has specified some text for a function like "return x+5"
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return new Function(value);
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}else{
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// The user has specified the name of a function like "myOnClick"
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// or a single word function "return"
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return d.getObject(value, false) || new Function(value);
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}
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}catch(e){ return new Function(); }
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case "array":
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return value ? value.split(/\s*,\s*/) : [];
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case "date":
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switch(value){
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case "": return new Date(""); // the NaN of dates
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case "now": return new Date(); // current date
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default: return d.date.stamp.fromISOString(value);
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}
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case "url":
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return d.baseUrl + value;
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default:
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return d.fromJson(value);
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}
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}
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var dummyClass = {}, instanceClasses = {
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// map from fully qualified name (like "dijit.Button") to structure like
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// { cls: dijit.Button, params: {label: "string", disabled: "boolean"} }
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};
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// Widgets like BorderContainer add properties to _Widget via dojo.extend().
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// If BorderContainer is loaded after _Widget's parameter list has been cached,
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// we need to refresh that parameter list (for _Widget and all widgets that extend _Widget).
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// TODO: remove this in 2.0, when we stop caching parameters.
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d.connect(d, "extend", function(){
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instanceClasses = {};
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});
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function getProtoInfo(cls, params){
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// cls: A prototype
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// The prototype of the class to check props on
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// params: Object
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// The parameters object to mix found parameters onto.
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for(var name in cls){
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if(name.charAt(0)=="_"){ continue; } // skip internal properties
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if(name in dummyClass){ continue; } // skip "constructor" and "toString"
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params[name] = val2type(cls[name]);
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}
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return params;
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}
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function getClassInfo(/*String*/ className, /*Boolean*/ skipParamsLookup){
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// summary:
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// Maps a widget name string like "dijit.form.Button" to the widget constructor itself,
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// and a list of that widget's parameters and their types
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// className:
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// fully qualified name (like "dijit.form.Button")
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// returns:
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// structure like
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// {
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// cls: dijit.Button,
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// params: { label: "string", disabled: "boolean"}
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// }
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var c = instanceClasses[className];
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if(!c){
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// get pointer to widget class
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var cls = d.getObject(className), params = null;
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if(!cls){ return null; } // class not defined [yet]
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if(!skipParamsLookup){ // from fastpath, we don't need to lookup the attrs on the proto because they are explicit
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params = getProtoInfo(cls.prototype, {})
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}
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c = { cls: cls, params: params };
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}else if(!skipParamsLookup && !c.params){
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// if we're calling getClassInfo and have a cls proto, but no params info, scan that cls for params now
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// and update the pointer in instanceClasses[className]. This happens when a widget appears in another
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// widget's template which still uses dojoType, but an instance of the widget appears prior with a data-dojo-type,
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// skipping this lookup the first time.
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c.params = getProtoInfo(c.cls.prototype, {});
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}
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return c;
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}
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this._functionFromScript = function(script, attrData){
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// summary:
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// Convert a <script type="dojo/method" args="a, b, c"> ... </script>
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// into a function
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// script: DOMNode
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// The <script> DOMNode
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// attrData: String
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// For HTML5 compliance, searches for attrData + "args" (typically
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// "data-dojo-args") instead of "args"
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var preamble = "";
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var suffix = "";
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var argsStr = (script.getAttribute(attrData + "args") || script.getAttribute("args"));
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if(argsStr){
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d.forEach(argsStr.split(/\s*,\s*/), function(part, idx){
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preamble += "var "+part+" = arguments["+idx+"]; ";
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});
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}
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var withStr = script.getAttribute("with");
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if(withStr && withStr.length){
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d.forEach(withStr.split(/\s*,\s*/), function(part){
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preamble += "with("+part+"){";
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suffix += "}";
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});
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}
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return new Function(preamble+script.innerHTML+suffix);
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};
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this.instantiate = function(/* Array */nodes, /* Object? */mixin, /* Object? */args){
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// summary:
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// Takes array of nodes, and turns them into class instances and
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// potentially calls a startup method to allow them to connect with
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// any children.
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// nodes: Array
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// Array of nodes or objects like
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// | {
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// | type: "dijit.form.Button",
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// | node: DOMNode,
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// | scripts: [ ... ], // array of <script type="dojo/..."> children of node
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// | inherited: { ... } // settings inherited from ancestors like dir, theme, etc.
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// | }
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// mixin: Object?
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// An object that will be mixed in with each node in the array.
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// Values in the mixin will override values in the node, if they
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// exist.
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// args: Object?
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// An object used to hold kwArgs for instantiation.
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// See parse.args argument for details.
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var thelist = [],
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mixin = mixin||{};
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args = args||{};
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// TODO: for 2.0 default to data-dojo- regardless of scopeName (or maybe scopeName won't exist in 2.0)
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var attrName = (args.scope || d._scopeName) + "Type", // typically "dojoType"
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attrData = "data-" + (args.scope || d._scopeName) + "-"; // typically "data-dojo-"
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d.forEach(nodes, function(obj){
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if(!obj){ return; }
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// Get pointers to DOMNode, dojoType string, and clsInfo (metadata about the dojoType), etc.
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var node, type, clsInfo, clazz, scripts, fastpath;
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if(obj.node){
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// new format of nodes[] array, object w/lots of properties pre-computed for me
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node = obj.node;
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type = obj.type;
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fastpath = obj.fastpath;
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clsInfo = obj.clsInfo || (type && getClassInfo(type, fastpath));
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clazz = clsInfo && clsInfo.cls;
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scripts = obj.scripts;
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}else{
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// old (backwards compatible) format of nodes[] array, simple array of DOMNodes. no fastpath/data-dojo-type support here.
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node = obj;
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type = attrName in mixin ? mixin[attrName] : node.getAttribute(attrName);
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clsInfo = type && getClassInfo(type);
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clazz = clsInfo && clsInfo.cls;
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scripts = (clazz && (clazz._noScript || clazz.prototype._noScript) ? [] :
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d.query("> script[type^='dojo/']", node));
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}
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if(!clsInfo){
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throw new Error("Could not load class '" + type);
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}
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// Setup hash to hold parameter settings for this widget. Start with the parameter
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// settings inherited from ancestors ("dir" and "lang").
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// Inherited setting may later be overridden by explicit settings on node itself.
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var params = {};
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if(args.defaults){
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// settings for the document itself (or whatever subtree is being parsed)
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d._mixin(params, args.defaults);
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}
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if(obj.inherited){
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// settings from dir=rtl or lang=... on a node above this node
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d._mixin(params, obj.inherited);
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}
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// mix things found in data-dojo-props into the params
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if(fastpath){
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var extra = node.getAttribute(attrData + "props");
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if(extra && extra.length){
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try{
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extra = d.fromJson.call(args.propsThis, "{" + extra + "}");
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d._mixin(params, extra);
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}catch(e){
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// give the user a pointer to their invalid parameters. FIXME: can we kill this in production?
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throw new Error(e.toString() + " in data-dojo-props='" + extra + "'");
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}
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}
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// For the benefit of _Templated, check if node has data-dojo-attach-point/data-dojo-attach-event
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// and mix those in as though they were parameters
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var attachPoint = node.getAttribute(attrData + "attach-point");
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if(attachPoint){
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params.dojoAttachPoint = attachPoint;
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}
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var attachEvent = node.getAttribute(attrData + "attach-event");
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if(attachEvent){
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params.dojoAttachEvent = attachEvent;
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}
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dojo.mixin(params, mixin);
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}else{
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// FIXME: we need something like "deprecateOnce()" to throw dojo.deprecation for something.
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// remove this logic in 2.0
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// read parameters (ie, attributes) specified on DOMNode
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var attributes = node.attributes;
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// clsInfo.params lists expected params like {"checked": "boolean", "n": "number"}
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for(var name in clsInfo.params){
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var item = name in mixin ? { value:mixin[name], specified:true } : attributes.getNamedItem(name);
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if(!item || (!item.specified && (!dojo.isIE || name.toLowerCase()!="value"))){ continue; }
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var value = item.value;
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// Deal with IE quirks for 'class' and 'style'
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switch(name){
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case "class":
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value = "className" in mixin ? mixin.className : node.className;
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break;
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case "style":
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value = "style" in mixin ? mixin.style : (node.style && node.style.cssText); // FIXME: Opera?
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}
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var _type = clsInfo.params[name];
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if(typeof value == "string"){
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params[name] = str2obj(value, _type);
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}else{
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params[name] = value;
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}
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}
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}
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// Process <script type="dojo/*"> script tags
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// <script type="dojo/method" event="foo"> tags are added to params, and passed to
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// the widget on instantiation.
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// <script type="dojo/method"> tags (with no event) are executed after instantiation
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// <script type="dojo/connect" event="foo"> tags are dojo.connected after instantiation
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// note: dojo/* script tags cannot exist in self closing widgets, like <input />
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var connects = [], // functions to connect after instantiation
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calls = []; // functions to call after instantiation
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d.forEach(scripts, function(script){
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node.removeChild(script);
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// FIXME: drop event="" support in 2.0. use data-dojo-event="" instead
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var event = (script.getAttribute(attrData + "event") || script.getAttribute("event")),
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type = script.getAttribute("type"),
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nf = d.parser._functionFromScript(script, attrData);
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if(event){
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if(type == "dojo/connect"){
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connects.push({event: event, func: nf});
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}else{
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params[event] = nf;
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}
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}else{
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calls.push(nf);
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}
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});
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var markupFactory = clazz.markupFactory || clazz.prototype && clazz.prototype.markupFactory;
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// create the instance
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var instance = markupFactory ? markupFactory(params, node, clazz) : new clazz(params, node);
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thelist.push(instance);
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// map it to the JS namespace if that makes sense
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// FIXME: in 2.0, drop jsId support. use data-dojo-id instead
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var jsname = (node.getAttribute(attrData + "id") || node.getAttribute("jsId"));
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if(jsname){
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d.setObject(jsname, instance);
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}
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// process connections and startup functions
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d.forEach(connects, function(connect){
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d.connect(instance, connect.event, null, connect.func);
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});
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d.forEach(calls, function(func){
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func.call(instance);
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});
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});
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// Call startup on each top level instance if it makes sense (as for
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// widgets). Parent widgets will recursively call startup on their
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// (non-top level) children
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if(!mixin._started){
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// TODO: for 2.0, when old instantiate() API is desupported, store parent-child
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// relationships in the nodes[] array so that no getParent() call is needed.
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// Note that will require a parse() call from ContentPane setting a param that the
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// ContentPane is the parent widget (so that the parse doesn't call startup() on the
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// ContentPane's children)
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d.forEach(thelist, function(instance){
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if( !args.noStart && instance &&
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dojo.isFunction(instance.startup) &&
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!instance._started &&
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(!instance.getParent || !instance.getParent())
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){
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instance.startup();
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}
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});
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}
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return thelist;
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};
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this.parse = function(rootNode, args){
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// summary:
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// Scan the DOM for class instances, and instantiate them.
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//
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// description:
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// Search specified node (or root node) recursively for class instances,
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// and instantiate them. Searches for either data-dojo-type="Class" or
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// dojoType="Class" where "Class" is a a fully qualified class name,
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// like `dijit.form.Button`
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//
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// Using `data-dojo-type`:
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// Attributes using can be mixed into the parameters used to instantitate the
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// Class by using a `data-dojo-props` attribute on the node being converted.
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// `data-dojo-props` should be a string attribute to be converted from JSON.
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//
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// Using `dojoType`:
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// Attributes are read from the original domNode and converted to appropriate
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// types by looking up the Class prototype values. This is the default behavior
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// from Dojo 1.0 to Dojo 1.5. `dojoType` support is deprecated, and will
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// go away in Dojo 2.0.
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//
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// rootNode: DomNode?
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// A default starting root node from which to start the parsing. Can be
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// omitted, defaulting to the entire document. If omitted, the `args`
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// object can be passed in this place. If the `args` object has a
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// `rootNode` member, that is used.
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//
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// args: Object
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// a kwArgs object passed along to instantiate()
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//
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// * noStart: Boolean?
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// when set will prevent the parser from calling .startup()
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// when locating the nodes.
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// * rootNode: DomNode?
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// identical to the function's `rootNode` argument, though
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// allowed to be passed in via this `args object.
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// * template: Boolean
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// If true, ignores ContentPane's stopParser flag and parses contents inside of
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// a ContentPane inside of a template. This allows dojoAttachPoint on widgets/nodes
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// nested inside the ContentPane to work.
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// * inherited: Object
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// Hash possibly containing dir and lang settings to be applied to
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// parsed widgets, unless there's another setting on a sub-node that overrides
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// * scope: String
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// Root for attribute names to search for. If scopeName is dojo,
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// will search for data-dojo-type (or dojoType). For backwards compatibility
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// reasons defaults to dojo._scopeName (which is "dojo" except when
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// multi-version support is used, when it will be something like dojo16, dojo20, etc.)
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// * propsThis: Object
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// If specified, "this" referenced from data-dojo-props will refer to propsThis.
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// Intended for use from the widgets-in-template feature of `dijit._Templated`
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//
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// example:
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// Parse all widgets on a page:
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// | dojo.parser.parse();
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//
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// example:
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// Parse all classes within the node with id="foo"
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// | dojo.parser.parse(dojo.byId('foo'));
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//
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// example:
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// Parse all classes in a page, but do not call .startup() on any
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// child
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// | dojo.parser.parse({ noStart: true })
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//
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// example:
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// Parse all classes in a node, but do not call .startup()
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// | dojo.parser.parse(someNode, { noStart:true });
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// | // or
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// | dojo.parser.parse({ noStart:true, rootNode: someNode });
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// determine the root node based on the passed arguments.
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var root;
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if(!args && rootNode && rootNode.rootNode){
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args = rootNode;
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root = args.rootNode;
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}else{
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root = rootNode;
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}
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root = root ? dojo.byId(root) : dojo.body();
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args = args || {};
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var attrName = (args.scope || d._scopeName) + "Type", // typically "dojoType"
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attrData = "data-" + (args.scope || d._scopeName) + "-"; // typically "data-dojo-"
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function scan(parent, list){
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// summary:
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// Parent is an Object representing a DOMNode, with or without a dojoType specified.
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// Scan parent's children looking for nodes with dojoType specified, storing in list[].
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// If parent has a dojoType, also collects <script type=dojo/*> children and stores in parent.scripts[].
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// parent: Object
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// Object representing the parent node, like
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// | {
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// | node: DomNode, // scan children of this node
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// | inherited: {dir: "rtl"}, // dir/lang setting inherited from above node
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// |
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// | // attributes only set if node has dojoType specified
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// | scripts: [], // empty array, put <script type=dojo/*> in here
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// | clsInfo: { cls: dijit.form.Button, ...}
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// | }
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// list: DomNode[]
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// Output array of objects (same format as parent) representing nodes to be turned into widgets
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// Effective dir and lang settings on parent node, either set directly or inherited from grandparent
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var inherited = dojo.clone(parent.inherited);
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dojo.forEach(["dir", "lang"], function(name){
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// TODO: what if this is a widget and dir/lang are declared in data-dojo-props?
|
|
var val = parent.node.getAttribute(name);
|
|
if(val){
|
|
inherited[name] = val;
|
|
}
|
|
});
|
|
|
|
// if parent is a widget, then search for <script type=dojo/*> tags and put them in scripts[].
|
|
var scripts = parent.clsInfo && !parent.clsInfo.cls.prototype._noScript ? parent.scripts : null;
|
|
|
|
// unless parent is a widget with the stopParser flag set, continue search for dojoType, recursively
|
|
var recurse = (!parent.clsInfo || !parent.clsInfo.cls.prototype.stopParser) || (args && args.template);
|
|
|
|
// scan parent's children looking for dojoType and <script type=dojo/*>
|
|
for(var child = parent.node.firstChild; child; child = child.nextSibling){
|
|
if(child.nodeType == 1){
|
|
// FIXME: desupport dojoType in 2.0. use data-dojo-type instead
|
|
var type, html5 = recurse && child.getAttribute(attrData + "type");
|
|
if(html5){
|
|
type = html5;
|
|
}else{
|
|
// fallback to backward compatible mode, using dojoType. remove in 2.0
|
|
type = recurse && child.getAttribute(attrName);
|
|
}
|
|
|
|
var fastpath = html5 == type;
|
|
|
|
if(type){
|
|
// if dojoType/data-dojo-type specified, add to output array of nodes to instantiate
|
|
var params = {
|
|
"type": type,
|
|
fastpath: fastpath,
|
|
clsInfo: getClassInfo(type, fastpath), // note: won't find classes declared via dojo.Declaration
|
|
node: child,
|
|
scripts: [], // <script> nodes that are parent's children
|
|
inherited: inherited // dir & lang attributes inherited from parent
|
|
};
|
|
list.push(params);
|
|
|
|
// Recurse, collecting <script type="dojo/..."> children, and also looking for
|
|
// descendant nodes with dojoType specified (unless the widget has the stopParser flag),
|
|
scan(params, list);
|
|
}else if(scripts && child.nodeName.toLowerCase() == "script"){
|
|
// if <script type="dojo/...">, save in scripts[]
|
|
type = child.getAttribute("type");
|
|
if (type && /^dojo\/\w/i.test(type)) {
|
|
scripts.push(child);
|
|
}
|
|
}else if(recurse){
|
|
// Recurse, looking for grandchild nodes with dojoType specified
|
|
scan({
|
|
node: child,
|
|
inherited: inherited
|
|
}, list);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Ignore bogus entries in inherited hash like {dir: ""}
|
|
var inherited = {};
|
|
if(args && args.inherited){
|
|
for(var key in args.inherited){
|
|
if(args.inherited[key]){ inherited[key] = args.inherited[key]; }
|
|
}
|
|
}
|
|
|
|
// Make list of all nodes on page w/dojoType specified
|
|
var list = [];
|
|
scan({
|
|
node: root,
|
|
inherited: inherited
|
|
}, list);
|
|
|
|
// go build the object instances
|
|
var mixin = args && args.template ? {template: true} : null;
|
|
return this.instantiate(list, mixin, args); // Array
|
|
};
|
|
}();
|
|
|
|
//Register the parser callback. It should be the first callback
|
|
//after the a11y test.
|
|
|
|
(function(){
|
|
var parseRunner = function(){
|
|
if(dojo.config.parseOnLoad){
|
|
dojo.parser.parse();
|
|
}
|
|
};
|
|
|
|
// FIXME: need to clobber cross-dependency!!
|
|
if(dojo.getObject("dijit.wai.onload") === dojo._loaders[0]){
|
|
dojo._loaders.splice(1, 0, parseRunner);
|
|
}else{
|
|
dojo._loaders.unshift(parseRunner);
|
|
}
|
|
})();
|
|
|
|
}
|