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此仓库是为了提升国内下载速度的镜像仓库,每日同步一次。 原始仓库: https://github.com/dojo/dojo
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parser.js 34.83 KB
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Mangala SSS Khalsa 提交于 2021-05-11 07:36 . Add JSON5 parser (#381)
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define([
"require", "./_base/kernel", "./_base/lang", "./_base/array", "./_base/config", "./dom", "./_base/window",
"./_base/url", "./aspect", "./promise/all", "./date/stamp", "./Deferred", "./has", "./json5", "./query", "./on",
"./ready"
], function(require, dojo, dlang, darray, config, dom, dwindow, _Url, aspect, all, dates, Deferred, has, json5, query,
don, ready){
// module:
// dojo/parser
new Date("X"); // workaround for #11279, new Date("") == NaN
var myEval;
if(has('csp-restrictions')) {
// JSON5 data attributes can be parsed without using eval; JS expressions will throw an error
myEval = json5.parse;
}
else {
myEval = function(text){
// data-dojo-props etc. is not restricted to JSON, it can be any javascript
/* jshint -W061 */
return eval("(" + text + ")");
};
}
// Widgets like BorderContainer add properties to _Widget via dojo.extend().
// If BorderContainer is loaded after _Widget's parameter list has been cached,
// we need to refresh that parameter list (for _Widget and all widgets that extend _Widget).
var extendCnt = 0;
aspect.after(dlang, "extend", function(){
extendCnt++;
}, true);
function getNameMap(ctor){
// summary:
// Returns map from lowercase name to attribute name in class, ex: {onclick: "onClick"}
var map = ctor._nameCaseMap, proto = ctor.prototype;
// Create the map if it's undefined.
// Refresh the map if a superclass was possibly extended with new methods since the map was created.
if(!map || map._extendCnt < extendCnt){
map = ctor._nameCaseMap = {};
for(var name in proto){
if(name.charAt(0) === "_"){
continue;
} // skip internal properties
map[name.toLowerCase()] = name;
}
map._extendCnt = extendCnt;
}
return map;
}
function getCtor(/*String[]*/ types, /*Function?*/ contextRequire){
// summary:
// Retrieves a constructor. If the types array contains more than one class/MID then the
// subsequent classes will be mixed into the first class and a unique constructor will be
// returned for that array.
if(!contextRequire){
contextRequire = require;
}
// Map from widget name or list of widget names(ex: "dijit/form/Button,acme/MyMixin") to a constructor.
// Keep separate map for each requireContext to avoid false matches (ex: "./Foo" can mean different things
// depending on context.)
var ctorMap = contextRequire._dojoParserCtorMap || (contextRequire._dojoParserCtorMap = {});
var ts = types.join();
if(!ctorMap[ts]){
var mixins = [];
for(var i = 0, l = types.length; i < l; i++){
var t = types[i];
// TODO: Consider swapping getObject and require in the future
mixins[mixins.length] = (ctorMap[t] = ctorMap[t] || (dlang.getObject(t) || (~t.indexOf('/') &&
contextRequire(t))));
}
var ctor = mixins.shift();
ctorMap[ts] = mixins.length ? (ctor.createSubclass ? ctor.createSubclass(mixins) : ctor.extend.apply(ctor, mixins)) : ctor;
}
return ctorMap[ts];
}
var parser = {
// summary:
// The Dom/Widget parsing package
_clearCache: function(){
// summary:
// Clear cached data. Used mainly for benchmarking.
extendCnt++;
_ctorMap = {};
},
_functionFromScript: function(script, attrData){
// summary:
// Convert a `<script type="dojo/method" args="a, b, c"> ... </script>`
// into a function
// script: DOMNode
// The `<script>` DOMNode
// attrData: String
// For HTML5 compliance, searches for attrData + "args" (typically
// "data-dojo-args") instead of "args"
var preamble = "",
suffix = "",
argsStr = (script.getAttribute(attrData + "args") || script.getAttribute("args")),
withStr = script.getAttribute("with");
// Convert any arguments supplied in script tag into an array to be passed to the
var fnArgs = (argsStr || "").split(/\s*,\s*/);
if(withStr && withStr.length){
darray.forEach(withStr.split(/\s*,\s*/), function(part){
preamble += "with(" + part + "){";
suffix += "}";
});
}
return new Function(fnArgs, preamble + script.innerHTML + suffix);
},
instantiate: function(nodes, mixin, options){
// summary:
// Takes array of nodes, and turns them into class instances and
// potentially calls a startup method to allow them to connect with
// any children.
// nodes: Array
// Array of DOM nodes
// mixin: Object?
// An object that will be mixed in with each node in the array.
// Values in the mixin will override values in the node, if they
// exist.
// options: Object?
// An object used to hold kwArgs for instantiation.
// See parse.options argument for details.
// returns:
// Array of instances.
mixin = mixin || {};
options = options || {};
var dojoType = (options.scope || dojo._scopeName) + "Type", // typically "dojoType"
attrData = "data-" + (options.scope || dojo._scopeName) + "-", // typically "data-dojo-"
dataDojoType = attrData + "type", // typically "data-dojo-type"
dataDojoMixins = attrData + "mixins"; // typically "data-dojo-mixins"
var list = [];
darray.forEach(nodes, function(node){
var type = dojoType in mixin ? mixin[dojoType] : node.getAttribute(dataDojoType) || node.getAttribute(dojoType);
if(type){
var mixinsValue = node.getAttribute(dataDojoMixins),
types = mixinsValue ? [type].concat(mixinsValue.split(/\s*,\s*/)) : [type];
list.push({
node: node,
types: types
});
}
});
// Instantiate the nodes and return the list of instances.
return this._instantiate(list, mixin, options);
},
_instantiate: function(nodes, mixin, options, returnPromise){
// summary:
// Takes array of objects representing nodes, and turns them into class instances and
// potentially calls a startup method to allow them to connect with
// any children.
// nodes: Array
// Array of objects like
// | {
// | ctor: Function (may be null)
// | types: ["dijit/form/Button", "acme/MyMixin"] (used if ctor not specified)
// | node: DOMNode,
// | scripts: [ ... ], // array of <script type="dojo/..."> children of node
// | inherited: { ... } // settings inherited from ancestors like dir, theme, etc.
// | }
// mixin: Object
// An object that will be mixed in with each node in the array.
// Values in the mixin will override values in the node, if they
// exist.
// options: Object
// An options object used to hold kwArgs for instantiation.
// See parse.options argument for details.
// returnPromise: Boolean
// Return a Promise rather than the instance; supports asynchronous widget creation.
// returns:
// Array of instances, or if returnPromise is true, a promise for array of instances
// that resolves when instances have finished initializing.
// Call widget constructors. Some may be asynchronous and return promises.
var thelist = darray.map(nodes, function(obj){
var ctor = obj.ctor || getCtor(obj.types, options.contextRequire);
// If we still haven't resolved a ctor, it is fatal now
if(!ctor){
throw new Error("Unable to resolve constructor for: '" + obj.types.join() + "'");
}
return this.construct(ctor, obj.node, mixin, options, obj.scripts, obj.inherited);
}, this);
// After all widget construction finishes, call startup on each top level instance if it makes sense (as for
// widgets). Parent widgets will recursively call startup on their (non-top level) children
function onConstruct(thelist){
if(!mixin._started && !options.noStart){
darray.forEach(thelist, function(instance){
if(typeof instance.startup === "function" && !instance._started){
instance.startup();
}
});
}
return thelist;
}
if(returnPromise){
return all(thelist).then(onConstruct);
}else{
// Back-compat path, remove for 2.0
return onConstruct(thelist);
}
},
construct: function(ctor, node, mixin, options, scripts, inherited){
// summary:
// Calls new ctor(params, node), where params is the hash of parameters specified on the node,
// excluding data-dojo-type and data-dojo-mixins. Does not call startup().
// ctor: Function
// Widget constructor.
// node: DOMNode
// This node will be replaced/attached to by the widget. It also specifies the arguments to pass to ctor.
// mixin: Object?
// Attributes in this object will be passed as parameters to ctor,
// overriding attributes specified on the node.
// options: Object?
// An options object used to hold kwArgs for instantiation. See parse.options argument for details.
// scripts: DomNode[]?
// Array of `<script type="dojo/*">` DOMNodes. If not specified, will search for `<script>` tags inside node.
// inherited: Object?
// Settings from dir=rtl or lang=... on a node above this node. Overrides options.inherited.
// returns:
// Instance or Promise for the instance, if markupFactory() itself returned a promise
var proto = ctor && ctor.prototype;
options = options || {};
// Setup hash to hold parameter settings for this widget. Start with the parameter
// settings inherited from ancestors ("dir" and "lang").
// Inherited setting may later be overridden by explicit settings on node itself.
var params = {};
if(options.defaults){
// settings for the document itself (or whatever subtree is being parsed)
dlang.mixin(params, options.defaults);
}
if(inherited){
// settings from dir=rtl or lang=... on a node above this node
dlang.mixin(params, inherited);
}
// Get list of attributes explicitly listed in the markup
var attributes;
if(has("dom-attributes-explicit")){
// Standard path to get list of user specified attributes
attributes = node.attributes;
}else if(has("dom-attributes-specified-flag")){
// Special processing needed for IE8, to skip a few faux values in attributes[]
attributes = darray.filter(node.attributes, function(a){
return a.specified;
});
}else{
// Special path for IE6-7, avoid (sometimes >100) bogus entries in node.attributes
var clone = /^input$|^img$/i.test(node.nodeName) ? node : node.cloneNode(false),
attrs = clone.outerHTML.replace(/=[^\s"']+|="[^"]*"|='[^']*'/g, "").replace(/^\s*<[a-zA-Z0-9]*\s*/, "").replace(/\s*>.*$/, "");
attributes = darray.map(attrs.split(/\s+/), function(name){
var lcName = name.toLowerCase();
return {
name: name,
// getAttribute() doesn't work for button.value, returns innerHTML of button.
// but getAttributeNode().value doesn't work for the form.encType or li.value
value: (node.nodeName == "LI" && name == "value") || lcName == "enctype" ?
node.getAttribute(lcName) : node.getAttributeNode(lcName).value
};
});
}
// Hash to convert scoped attribute name (ex: data-dojo17-params) to something friendly (ex: data-dojo-params)
// TODO: remove scope for 2.0
var scope = options.scope || dojo._scopeName,
attrData = "data-" + scope + "-", // typically "data-dojo-"
hash = {};
if(scope !== "dojo"){
hash[attrData + "props"] = "data-dojo-props";
hash[attrData + "type"] = "data-dojo-type";
hash[attrData + "mixins"] = "data-dojo-mixins";
hash[scope + "type"] = "dojotype";
hash[attrData + "id"] = "data-dojo-id";
}
// Read in attributes and process them, including data-dojo-props, data-dojo-type,
// dojoAttachPoint, etc., as well as normal foo=bar attributes.
var i = 0, item, funcAttrs = [], jsname, extra;
while(item = attributes[i++]){
var name = item.name,
lcName = name.toLowerCase(),
value = item.value;
switch(hash[lcName] || lcName){
// Already processed, just ignore
case "data-dojo-type":
case "dojotype":
case "data-dojo-mixins":
break;
// Data-dojo-props. Save for later to make sure it overrides direct foo=bar settings
case "data-dojo-props":
extra = value;
break;
// data-dojo-id or jsId. TODO: drop jsId in 2.0
case "data-dojo-id":
case "jsid":
jsname = value;
break;
// For the benefit of _Templated
case "data-dojo-attach-point":
case "dojoattachpoint":
params.dojoAttachPoint = value;
break;
case "data-dojo-attach-event":
case "dojoattachevent":
params.dojoAttachEvent = value;
break;
// Special parameter handling needed for IE
case "class":
params["class"] = node.className;
break;
case "style":
params["style"] = node.style && node.style.cssText;
break;
default:
// Normal attribute, ex: value="123"
// Find attribute in widget corresponding to specified name.
// May involve case conversion, ex: onclick --> onClick
if(!(name in proto)){
var map = getNameMap(ctor);
name = map[lcName] || name;
}
// Set params[name] to value, doing type conversion
if(name in proto){
switch(typeof proto[name]){
case "string":
params[name] = value;
break;
case "number":
params[name] = value.length ? Number(value) : NaN;
break;
case "boolean":
// for checked/disabled value might be "" or "checked". interpret as true.
params[name] = value.toLowerCase() != "false";
break;
case "function":
if(value === "" || value.search(/[^\w\.]+/i) != -1){
// The user has specified some text for a function like "return x+5"
params[name] = new Function(value);
}else{
// The user has specified the name of a global function like "myOnClick"
// or a single word function "return"
params[name] = dlang.getObject(value, false) || new Function(value);
}
funcAttrs.push(name); // prevent "double connect", see #15026
break;
default:
var pVal = proto[name];
try{
params[name] =
(pVal && "length" in pVal) ? (value ? value.split(/\s*,\s*/) : []) : // array
(pVal instanceof Date) ?
(value == "" ? new Date("") : // the NaN of dates
value == "now" ? new Date() : // current date
dates.fromISOString(value)) :
(pVal instanceof _Url) ? (dojo.baseUrl + value) :
myEval(value);
}
catch(error){
console.error(error);
}
}
}else{
params[name] = value;
}
}
}
// Remove function attributes from DOMNode to prevent "double connect" problem, see #15026.
// Do this as a separate loop since attributes[] is often a live collection (depends on the browser though).
for(var j = 0; j < funcAttrs.length; j++){
var lcfname = funcAttrs[j].toLowerCase();
node.removeAttribute(lcfname);
node[lcfname] = null;
}
// Mix things found in data-dojo-props into the params, overriding any direct settings
if(extra){
try{
extra = myEval.call(options.propsThis, "{" + extra + "}");
dlang.mixin(params, extra);
}catch(e){
// give the user a pointer to their invalid parameters. FIXME: can we kill this in production?
throw new Error(e.toString() + " in data-dojo-props='" + extra + "'");
}
}
// Any parameters specified in "mixin" override everything else.
dlang.mixin(params, mixin);
// Get <script> nodes associated with this widget, if they weren't specified explicitly
if(!scripts){
scripts = (ctor && (ctor._noScript || proto._noScript) ? [] : query("> script[type^='dojo/']", node));
}
// Process <script type="dojo/*"> script tags
// <script type="dojo/method" data-dojo-event="foo"> tags are added to params, and passed to
// the widget on instantiation.
// <script type="dojo/method"> tags (with no event) are executed after instantiation
// <script type="dojo/connect" data-dojo-event="foo"> tags are dojo.connected after instantiation,
// and likewise with <script type="dojo/aspect" data-dojo-method="foo">
// <script type="dojo/watch" data-dojo-prop="foo"> tags are dojo.watch after instantiation
// <script type="dojo/on" data-dojo-event="foo"> tags are dojo.on after instantiation
// note: dojo/* script tags cannot exist in self closing widgets, like <input />
var aspects = [], // aspects to connect after instantiation
calls = [], // functions to call after instantiation
watches = [], // functions to watch after instantiation
ons = []; // functions to on after instantiation
if(scripts){
for(i = 0; i < scripts.length; i++){
var script = scripts[i];
node.removeChild(script);
// FIXME: drop event="" support in 2.0. use data-dojo-event="" instead
var event = (script.getAttribute(attrData + "event") || script.getAttribute("event")),
prop = script.getAttribute(attrData + "prop"),
method = script.getAttribute(attrData + "method"),
advice = script.getAttribute(attrData + "advice"),
scriptType = script.getAttribute("type"),
nf = this._functionFromScript(script, attrData);
if(event){
if(scriptType == "dojo/connect"){
aspects.push({ method: event, func: nf });
}else if(scriptType == "dojo/on"){
ons.push({ event: event, func: nf });
}else{
// <script type="dojo/method" data-dojo-event="foo">
// TODO for 2.0: use data-dojo-method="foo" instead (also affects dijit/Declaration)
params[event] = nf;
}
}else if(scriptType == "dojo/aspect"){
aspects.push({ method: method, advice: advice, func: nf });
}else if(scriptType == "dojo/watch"){
watches.push({ prop: prop, func: nf });
}else{
calls.push(nf);
}
}
}
// create the instance
var markupFactory = ctor.markupFactory || proto.markupFactory;
var instance = markupFactory ? markupFactory(params, node, ctor) : new ctor(params, node);
function onInstantiate(instance){
// map it to the JS namespace if that makes sense
if(jsname){
dlang.setObject(jsname, instance);
}
// process connections and startup functions
for(i = 0; i < aspects.length; i++){
aspect[aspects[i].advice || "after"](instance, aspects[i].method, dlang.hitch(instance, aspects[i].func), true);
}
for(i = 0; i < calls.length; i++){
calls[i].call(instance);
}
for(i = 0; i < watches.length; i++){
instance.watch(watches[i].prop, watches[i].func);
}
for(i = 0; i < ons.length; i++){
don(instance, ons[i].event, ons[i].func);
}
return instance;
}
if(instance.then){
return instance.then(onInstantiate);
}else{
return onInstantiate(instance);
}
},
scan: function(root, options){
// summary:
// Scan a DOM tree and return an array of objects representing the DOMNodes
// that need to be turned into widgets.
// description:
// Search specified node (or document root node) recursively for class instances
// and return an array of objects that represent potential widgets to be
// instantiated. Searches for either data-dojo-type="MID" or dojoType="MID" where
// "MID" is a module ID like "dijit/form/Button" or a fully qualified Class name
// like "dijit/form/Button". If the MID is not currently available, scan will
// attempt to require() in the module.
//
// See parser.parse() for details of markup.
// root: DomNode?
// A default starting root node from which to start the parsing. Can be
// omitted, defaulting to the entire document. If omitted, the `options`
// object can be passed in this place. If the `options` object has a
// `rootNode` member, that is used.
// options: Object
// a kwArgs options object, see parse() for details
//
// returns: Promise
// A promise that is resolved with the nodes that have been parsed.
var list = [], // Output List
mids = [], // An array of modules that are not yet loaded
midsHash = {}; // Used to keep the mids array unique
var dojoType = (options.scope || dojo._scopeName) + "Type", // typically "dojoType"
attrData = "data-" + (options.scope || dojo._scopeName) + "-", // typically "data-dojo-"
dataDojoType = attrData + "type", // typically "data-dojo-type"
dataDojoTextDir = attrData + "textdir", // typically "data-dojo-textdir"
dataDojoMixins = attrData + "mixins"; // typically "data-dojo-mixins"
// Info on DOMNode currently being processed
var node = root.firstChild;
// Info on parent of DOMNode currently being processed
// - inherited: dir, lang, and textDir setting of parent, or inherited by parent
// - parent: pointer to identical structure for my parent (or null if no parent)
// - scripts: if specified, collects <script type="dojo/..."> type nodes from children
var inherited = options.inherited;
if(!inherited){
var findAncestorAttr = function findAncestorAttr(node, attr){
return (node.getAttribute && node.getAttribute(attr)) ||
(node.parentNode && findAncestorAttr(node.parentNode, attr));
};
inherited = {
dir: findAncestorAttr(root, "dir"),
lang: findAncestorAttr(root, "lang"),
textDir: findAncestorAttr(root, dataDojoTextDir)
};
for(var key in inherited){
if(!inherited[key]){
delete inherited[key];
}
}
}
// Metadata about parent node
var parent = {
inherited: inherited
};
// For collecting <script type="dojo/..."> type nodes (when null, we don't need to collect)
var scripts;
// when true, only look for <script type="dojo/..."> tags, and don't recurse to children
var scriptsOnly;
function getEffective(parent){
// summary:
// Get effective dir, lang, textDir settings for specified obj
// (matching "parent" object structure above), and do caching.
// Take care not to return null entries.
if(!parent.inherited){
parent.inherited = {};
var node = parent.node,
grandparent = getEffective(parent.parent);
var inherited = {
dir: node.getAttribute("dir") || grandparent.dir,
lang: node.getAttribute("lang") || grandparent.lang,
textDir: node.getAttribute(dataDojoTextDir) || grandparent.textDir
};
for(var key in inherited){
if(inherited[key]){
parent.inherited[key] = inherited[key];
}
}
}
return parent.inherited;
}
// DFS on DOM tree, collecting nodes with data-dojo-type specified.
while(true){
if(!node){
// Finished this level, continue to parent's next sibling
if(!parent || !parent.node){
break;
}
node = parent.node.nextSibling;
scriptsOnly = false;
parent = parent.parent;
scripts = parent.scripts;
continue;
}
if(node.nodeType != 1){
// Text or comment node, skip to next sibling
node = node.nextSibling;
continue;
}
if(scripts && node.nodeName.toLowerCase() == "script"){
// Save <script type="dojo/..."> for parent, then continue to next sibling
type = node.getAttribute("type");
if(type && /^dojo\/\w/i.test(type)){
scripts.push(node);
}
node = node.nextSibling;
continue;
}
if(scriptsOnly){
// scriptsOnly flag is set, we have already collected scripts if the parent wants them, so now we shouldn't
// continue further analysis of the node and will continue to the next sibling
node = node.nextSibling;
continue;
}
// Check for data-dojo-type attribute, fallback to backward compatible dojoType
// TODO: Remove dojoType in 2.0
var type = node.getAttribute(dataDojoType) || node.getAttribute(dojoType);
// Short circuit for leaf nodes containing nothing [but text]
var firstChild = node.firstChild;
if(!type && (!firstChild || (firstChild.nodeType == 3 && !firstChild.nextSibling))){
node = node.nextSibling;
continue;
}
// Meta data about current node
var current;
var ctor = null;
if(type){
// If dojoType/data-dojo-type specified, add to output array of nodes to instantiate.
var mixinsValue = node.getAttribute(dataDojoMixins),
types = mixinsValue ? [type].concat(mixinsValue.split(/\s*,\s*/)) : [type];
// Note: won't find classes declared via dojo/Declaration or any modules that haven't been
// loaded yet so use try/catch to avoid throw from require()
try{
ctor = getCtor(types, options.contextRequire);
}catch(e){}
// If the constructor was not found, check to see if it has modules that can be loaded
if(!ctor){
darray.forEach(types, function(t){
if(~t.indexOf('/') && !midsHash[t]){
// If the type looks like a MID and it currently isn't in the array of MIDs to load, add it.
midsHash[t] = true;
mids[mids.length] = t;
}
});
}
var childScripts = ctor && !ctor.prototype._noScript ? [] : null; // <script> nodes that are parent's children
// Setup meta data about this widget node, and save it to list of nodes to instantiate
current = {
types: types,
ctor: ctor,
parent: parent,
node: node,
scripts: childScripts
};
current.inherited = getEffective(current); // dir & lang settings for current node, explicit or inherited
list.push(current);
}else{
// Meta data about this non-widget node
current = {
node: node,
scripts: scripts,
parent: parent
};
}
// Recurse, collecting <script type="dojo/..."> children, and also looking for
// descendant nodes with dojoType specified (unless the widget has the stopParser flag).
// When finished with children, go to my next sibling.
scripts = childScripts;
scriptsOnly = node.stopParser || (ctor && ctor.prototype.stopParser && !(options.template));
parent = current;
node = firstChild;
}
var d = new Deferred();
// If there are modules to load then require them in
if(mids.length){
// Warn that there are modules being auto-required
if(has("dojo-debug-messages")){
console.warn("WARNING: Modules being Auto-Required: " + mids.join(", "));
}
var r = options.contextRequire || require;
r(mids, function(){
// Go through list of widget nodes, filling in missing constructors, and filtering out nodes that shouldn't
// be instantiated due to a stopParser flag on an ancestor that we belatedly learned about due to
// auto-require of a module like ContentPane. Assumes list is in DFS order.
d.resolve(darray.filter(list, function(widget){
if(!widget.ctor){
// Attempt to find the constructor again. Still won't find classes defined via
// dijit/Declaration so need to try/catch.
try{
widget.ctor = getCtor(widget.types, options.contextRequire);
}catch(e){}
}
// Get the parent widget
var parent = widget.parent;
while(parent && !parent.types){
parent = parent.parent;
}
// Return false if this node should be skipped due to stopParser on an ancestor.
// Since list[] is in DFS order, this loop will always set parent.instantiateChildren before
// trying to compute widget.instantiate.
var proto = widget.ctor && widget.ctor.prototype;
widget.instantiateChildren = !(proto && proto.stopParser && !(options.template));
widget.instantiate = !parent || (parent.instantiate && parent.instantiateChildren);
return widget.instantiate;
}));
});
}else{
// There were no modules to load, so just resolve with the parsed nodes. This separate code path is for
// efficiency, to avoid running the require() and the callback code above.
d.resolve(list);
}
// Return the promise
return d.promise;
},
_require: function(/*DOMNode*/ script, /*Object?*/ options){
// summary:
// Helper for _scanAMD(). Takes a `<script type=dojo/require>bar: "acme/bar", ...</script>` node,
// calls require() to load the specified modules and (asynchronously) assign them to the specified global
// variables, and returns a Promise for when that operation completes.
//
// In the example above, it is effectively doing a require(["acme/bar", ...], function(a){ bar = a; }).
var hash = myEval("{" + script.innerHTML + "}"), // can't use dojo/json::parse() because maybe no quotes
vars = [],
mids = [],
d = new Deferred();
var contextRequire = (options && options.contextRequire) || require;
for(var name in hash){
vars.push(name);
mids.push(hash[name]);
}
contextRequire(mids, function(){
for(var i = 0; i < vars.length; i++){
dlang.setObject(vars[i], arguments[i]);
}
d.resolve(arguments);
});
return d.promise;
},
_scanAmd: function(root, options){
// summary:
// Scans the DOM for any declarative requires and returns their values.
// description:
// Looks for `<script type=dojo/require>bar: "acme/bar", ...</script>` node, calls require() to load the
// specified modules and (asynchronously) assign them to the specified global variables,
// and returns a Promise for when those operations complete.
// root: DomNode
// The node to base the scan from.
// options: Object?
// a kwArgs options object, see parse() for details
// Promise that resolves when all the <script type=dojo/require> nodes have finished loading.
var deferred = new Deferred(),
promise = deferred.promise;
deferred.resolve(true);
var self = this;
query("script[type='dojo/require']", root).forEach(function(node){
// Fire off require() call for specified modules. Chain this require to fire after
// any previous requires complete, so that layers can be loaded before individual module require()'s fire.
promise = promise.then(function(){
return self._require(node, options);
});
// Remove from DOM so it isn't seen again
node.parentNode.removeChild(node);
});
return promise;
},
parse: function(rootNode, options){
// summary:
// Scan the DOM for class instances, and instantiate them.
// description:
// Search specified node (or root node) recursively for class instances,
// and instantiate them. Searches for either data-dojo-type="Class" or
// dojoType="Class" where "Class" is a a fully qualified class name,
// like `dijit/form/Button`
//
// Using `data-dojo-type`:
// Attributes using can be mixed into the parameters used to instantiate the
// Class by using a `data-dojo-props` attribute on the node being converted.
// `data-dojo-props` should be a string attribute to be converted from JSON.
//
// Using `dojoType`:
// Attributes are read from the original domNode and converted to appropriate
// types by looking up the Class prototype values. This is the default behavior
// from Dojo 1.0 to Dojo 1.5. `dojoType` support is deprecated, and will
// go away in Dojo 2.0.
// rootNode: DomNode?
// A default starting root node from which to start the parsing. Can be
// omitted, defaulting to the entire document. If omitted, the `options`
// object can be passed in this place. If the `options` object has a
// `rootNode` member, that is used.
// options: Object?
// A hash of options.
//
// - noStart: Boolean?:
// when set will prevent the parser from calling .startup()
// when locating the nodes.
// - rootNode: DomNode?:
// identical to the function's `rootNode` argument, though
// allowed to be passed in via this `options object.
// - template: Boolean:
// If true, ignores ContentPane's stopParser flag and parses contents inside of
// a ContentPane inside of a template. This allows dojoAttachPoint on widgets/nodes
// nested inside the ContentPane to work.
// - inherited: Object:
// Hash possibly containing dir and lang settings to be applied to
// parsed widgets, unless there's another setting on a sub-node that overrides
// - scope: String:
// Root for attribute names to search for. If scopeName is dojo,
// will search for data-dojo-type (or dojoType). For backwards compatibility
// reasons defaults to dojo._scopeName (which is "dojo" except when
// multi-version support is used, when it will be something like dojo16, dojo20, etc.)
// - propsThis: Object:
// If specified, "this" referenced from data-dojo-props will refer to propsThis.
// Intended for use from the widgets-in-template feature of `dijit._WidgetsInTemplateMixin`
// - contextRequire: Function:
// If specified, this require is utilised for looking resolving modules instead of the
// `dojo/parser` context `require()`. Intended for use from the widgets-in-template feature of
// `dijit._WidgetsInTemplateMixin`.
// returns: Mixed
// Returns a blended object that is an array of the instantiated objects, but also can include
// a promise that is resolved with the instantiated objects. This is done for backwards
// compatibility. If the parser auto-requires modules, it will always behave in a promise
// fashion and `parser.parse().then(function(instances){...})` should be used.
// example:
// Parse all widgets on a page:
// | parser.parse();
// example:
// Parse all classes within the node with id="foo"
// | parser.parse(dojo.byId('foo'));
// example:
// Parse all classes in a page, but do not call .startup() on any
// child
// | parser.parse({ noStart: true })
// example:
// Parse all classes in a node, but do not call .startup()
// | parser.parse(someNode, { noStart:true });
// | // or
// | parser.parse({ noStart:true, rootNode: someNode });
// determine the root node and options based on the passed arguments.
if(rootNode && typeof rootNode != "string" && !("nodeType" in rootNode)){
// If called as parse(options) rather than parse(), parse(rootNode), or parse(rootNode, options)...
options = rootNode;
rootNode = options.rootNode;
}
var root = rootNode ? dom.byId(rootNode) : dwindow.body();
options = options || {};
var mixin = options.template ? { template: true } : {},
instances = [],
self = this;
// First scan for any <script type=dojo/require> nodes, and execute.
// Then scan for all nodes with data-dojo-type, and load any unloaded modules.
// Then build the object instances. Add instances to already existing (but empty) instances[] array,
// which may already have been returned to caller. Also, use otherwise to collect and throw any errors
// that occur during the parse().
var p =
this._scanAmd(root, options).then(function(){
return self.scan(root, options);
}).then(function(parsedNodes){
return self._instantiate(parsedNodes, mixin, options, true);
}).then(function(_instances){
// Copy the instances into the instances[] array we declared above, and are accessing as
// our return value.
return instances = instances.concat(_instances);
}).otherwise(function(e){
// TODO Modify to follow better pattern for promise error management when available
console.error("dojo/parser::parse() error", e);
throw e;
});
// Blend the array with the promise
dlang.mixin(instances, p);
return instances;
}
};
if(has("extend-dojo")){
dojo.parser = parser;
}
// Register the parser callback. It should be the first callback
// after the a11y test.
if(config.parseOnLoad){
ready(100, parser, "parse");
}
return parser;
});
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