474 lines
15 KiB
JavaScript
474 lines
15 KiB
JavaScript
/*
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**OxDoc Tutorial**
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*/
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'use strict';
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/*
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An OxDoc comment is an inline or multi-line comment that starts with `@`:
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```
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//@ ...
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/*@
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...
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*/
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```
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The syntax is simple: almost every line has the form `name <type> summary`. If
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it doesn't, its meaning depends on its context.
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*/
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this.My = {};
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/*
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If the first line of the comment doesn't match `name <type> summary`, it is a
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section definition. Here, it marks a section named 'Primitives'.
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*/
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//@ Primitives
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/*
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This inline comment documents an item by providing its name, type and one-line
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summary.
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*/
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//@ My.REQUEST_TIMEOUT <number> Request timeout, in milliseconds
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My.REQUEST_TIMEOUT = 60000;
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/*
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In a multiline comment, lines that follow the inital definition are indented, as
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they refer to the item defined in the line above. Lines that don't match `name
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<type> summary` are parsed as a description. Like the summary, the description
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can contain `markdown`.
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*/
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/*@
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My.MAGIC_CONSTANT <number> Magic constant, needed for HTTP requests
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Please note that the value of `My.MAGIC_CONSTANT` (either `23` or `42`) is
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browser-dependent.
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*/
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My.MAGIC_CONSTANT = navigator.userAgent.length % 2 ? 23 : 42;
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/*
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This defines a new section named 'Objects'.
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*/
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//@ Objects
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/*
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Lines that start with `#` are inline comments. The follwing lines document
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properties of the `My.favorites` object. This example shows all possible values
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for `type`. These values can be shortened, it's sufficient to specify their
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first character.
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*/
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/*@
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My.favorites <object> ...
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# Properties --------------------------------------------------------------
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array <a> My favorite array
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boolean <b> My favorite boolean value
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date <d> My favorite date
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error <e> My favorite error
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function <f> My favorite function
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arguments <g> My favorite arguments
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htmlelement <h> My favorite HTML element
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nodelist <l> My favorite nodelist
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number <n> My favorite number
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object <o> My favorite object
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regexp <r> My favorite regular expression
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string <s> My favorite string
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undefined <u> Undefined is an all-time favorite
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window <w> So is the DOM window
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other <+> And the document
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any <*> Favorite of the day
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# Events -------------------------------------------------------------------
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event <!> Fires when My.favorite['function'] is called
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*/
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My.favorites = (function() {
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var favorites = {
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array: [],
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boolean: false,
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date: new Date(),
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error: new Error(),
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'function': function() {
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My.triggerEvent(this, 'event');
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},
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arguments: (function() { return arguments; }()),
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htmlelement: document.createElement('a'),
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nodelist: document.getElementsByTagName('a'),
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number: 0,
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object: {},
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regexp: new RegExp(),
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string: '',
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'undefined': void 0,
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'window': window,
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other: document
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},
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keys = Object.keys(favorites);
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favorites.any = favorites[
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keys[Math.floor(+new Date / 86400) * keys.length]
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];
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return favorites;
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}());
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/*
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Documentation can be nested. In other words, one can document the properties of
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a property (of a property...). Also, if all elements of an array are of a known
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type (in this case `string`), one can mark the type as `<[s]>` instead of just
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`<a>`.
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*/
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/*@
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My.HTMLUtils <o> HTML Utilities
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namedEntities <[s]> Named HTML entities
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replace <o> Entity decoding utilities
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namedEntities <a> Can be passed to `String.prototype.replace`
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0 <r> Matches named entities
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1 <f> Decodes named entities
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numericEntities <a> Can be passed to `String.prototype.replace`
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0 <r> Matches numeric entities
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1 <f> Decodes numeric entities
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*/
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My.HTMLUtils = (function() {
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var chars = '"&\'<>',
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entities = ['"', '&', ''', '<', '>'];
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return {
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namedEntities: entities,
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replace: {
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namedEntities: [
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new RegExp('(' + entities.join('|') + ')', 'g'),
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function(match) {
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return chars[entities.indexOf(match)];
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}
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],
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numericEntities: [
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/&#([0-9A-FX]+);/gi,
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function(match, code) {
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return String.fromCharCode(
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/^X/i.test(code)
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? parseInt(code.slice(1), 16)
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: parseInt(code, 10)
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);
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}
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],
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}
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};
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}());
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/*
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The beginning of another section, named 'Functions'.
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*/
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//@ Functions
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/*
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In the case of a function, the indented lines don't document properties, but the
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function's signature, return value and arguments. Signature and return value are
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just a special case of `name <type> summary`, where `name` has the form
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`(arguments) ->`. If an item can be of more than one type (in this case `string`
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or `function`), this is documented as `<s|f>`. If it has a default value (in
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this case the string `'GET'`), this is documented as `<s|'GET'>`. For a
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`function`-type argument (usually a callback function), there is no return value
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to document, only the arguments it gets passed.
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*/
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/*@
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My.readURL <f> Asynchronously reads a remote resource
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(url[, method], callback) -> <u> undefined
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Please note that the return value of `My.readURL` may change in the
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future.
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url <s|f> Remote URL, or function that returns one
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method <s|'GET'> Request method ('GET', 'POST', 'PUT' or 'DELETE')
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callback <f> Callback function
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result <s|null> Response text, or `null` in case of an error
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error <o|null> Error object, or `null` in case of success
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code <n> Error code
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text <s> Error text
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*/
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My.readURL = function(url, method, callback) {
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var request = new XMLHttpRequest();
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if (Ox.isFunction(url)) {
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url = url();
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}
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if (arguments.length == 2) {
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callback = method;
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method = 'GET';
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}
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request.open(method, url, true);
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request.onreadystatechange = function() {
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if (request.readyState == 4) {
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if (request.status == 200) {
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callback(request.responseText, null);
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} else {
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callback(null, {
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code: request.status,
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text: request.statusText
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});
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}
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}
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};
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request.send();
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};
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/*
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If a function's return value depends on the absence or presence of optional
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arguments, there can be multiple `(arguments) -> <type> summary` lines.
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*/
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/*@
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My.isOdd <f> Synchronously or asynchronously computes if a given number is odd
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(number) -> <b> True if the number is odd
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(number, callback) -> <u> undefined
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number <n> Any number
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callback <f> Callback function
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isOdd <b> True if the number is odd
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ms <n> Time it took to compute the result, in milliseconds
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*/
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My.isOdd = function(number, callback) {
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var time = +new Date, isOdd = !!(number % 2);
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if (callback) {
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callback(isOdd, +new Date - time);
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} else {
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return isOdd;
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}
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};
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/*
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Another case for multiple `(arguments) -> <type> summary` lines are functions
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whose signature cannot be represented in `(required[, optional])` notation. For
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a range function — `(stop)` or `(start, stop)` or `(start, stop, step)` — the
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notation `([start, ]stop[, step])` would be ambigious, since you cannot call it
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with `(stop, step)`.
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*/
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/*@
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My.range <f> Returns a python-style range
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(b) -> <[n]> Integers from 0 (inclusive) to b (exclusive)
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(a, b) -> <[n]> Integers from a (inclusice) to b (exclusive)
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(a, b, c) -> <[n]> Numbers from a (inclusive) to b (exclusive), growing by c
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*/
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My.range = function() {
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var a = [];
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Ox.loop.apply(null, Ox.toArray(arguments).concat(function(i) {
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a.push(i);
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}));
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return a;
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};
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/*
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In case a function has properties or methods that need documentation, they get
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prefixed with `.`, in order to differentiate them from arguments.
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*/
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/*@
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My.localStorage <f> Returns a localStorage handler for a given namespace
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(ns) -> storage <f> localStorage handler
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() -> <o> Returns all key:value pairs
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(key) -> <*> Returns one value
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(key, value) -> <f> Sets one value, returns the handler
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({key: value, ...}) -> <f> Sets one or more values, returns the handler
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key <s> Any string
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value <*> Any value that can be JSON-serialized
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.delete <f> Delete method
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() -> <f> Deletes all key:value pairs, returns the handler
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(key[, ...]) -> <f> Deletes one or more pairs, returns the handler
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key <s> Any string
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ns <s> Namespace
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*/
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My.localStorage = (function() {
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if (!window.localStorage) {
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window.localStorage = {};
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}
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return function(ns) {
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function storage(key, value) {
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var args, ret;
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if (arguments.length == 0) {
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ret = {};
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Ox.forEach(localStorage, function(value, key) {
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if (Ox.startsWith(key, ns + '.')) {
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ret[key.slice(ns.length + 1)] = JSON.parse(value);
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}
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});
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} else if (arguments.length == 1 && !Ox.isObject(key)) {
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value = localStorage[ns + '.' + key];
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ret = Ox.isUndefined(value) ? void 0 : JSON.parse(value);
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} else {
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Ox.forEach(Ox.makeObject(arguments), function(value, key) {
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localStorage[ns + '.' + key] = JSON.stringify(value);
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});
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ret = this;
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}
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return ret;
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};
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storage.delete = function() {
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var keys = arguments.length == 0 ? Object.keys(storage())
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: Ox.toArray(arguments)
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keys.forEach(function(key) {
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delete localStorage[ns + '.' + key];
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});
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return storage;
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};
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return storage;
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};
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}());
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/*
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And one more section, named 'UI Elements'.
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*/
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//@ UI Elements
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/*
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When documenting a constructor function, the returned object may come with a lot
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more documentation than the function itself. In this case, one may want to
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document the contructor's arguments first, then the signature and return value,
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follwed by the documentation of the returned object.
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*/
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/*@
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My.Box <f> A very simple colored box
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options <o> Options
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color <[n]> RGB value
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self <o> Shared private object
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([options[, self]]) -> <o> Box object
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change <!> Fires when the color of the box changes
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color <n> Value between `0` and `255`
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*/
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My.Box = function(options, self) {
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self = self || {};
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var that = Ox.Element({}, self)
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.defaults({color: [255, 0, 0]})
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.options(options || {})
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.update(setColor)
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.css({width: '256px', height: '256px'});
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setColor();
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function setColor() {
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that.css({background: 'rgb(' + self.options.color.join(', ') + ')'});
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if (arguments.length) {
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that.triggerEvent('change', {color: self.options.color});
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}
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}
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/*
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It can be more convenient to document properties at the place where they are
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defined. A name prefixed with a `.` signals that what follows is not a
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standalone item, but a property of the previous one (or, in case the
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previous item is a function that returns an object, a property of the
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retuned object).
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*/
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/*@
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.getHSL <f> Returns the color of the box as HSL value
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() -> <[n]> HSL value
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*/
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that.getHSL = function() {
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return Ox.hsl(self.options.value);
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};
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/*@
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.setHSL <f> Sets the color of the box to a given HSL value
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(hsl) -> <o> The Box object
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hsl <[n]> HSL value
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*/
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that.setHSL = function(hsl) {
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return that.options({color: Ox.rgb(hsl)});
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};
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/*@
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.toGrayscale <f> Changes the color of the box to grayscale.
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() -> <o> The Box object
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*/
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that.toGrayscale = function() {
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return that.options({
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color: Ox.repeat([Ox.avg(self.options.color)], 3)
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});
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};
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return that;
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};
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/*
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If an object extends or inherits from another one, one can specify its "class"
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(i.e. the name of the constuctor of the object it inherits from). Here,
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`My.ExtendedBox` extends `My.Box`. All events and properties of the latter,
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unless redefined will, be present on the former
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*/
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/*@
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My.ExtendedBox <f> An extended box with random color
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options <o> Options
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height <n> Height in px
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width <n> Width in px
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self <o> Shared private object
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([options[, self]]) -> <o:My.Box> Extended Box object
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*/
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My.ExtendedBox = function(options, self) {
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self = self || {};
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var that = My.Box({}, self)
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.defaults({
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height: 256,
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width: 256
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})
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.options(options || {})
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.update(function(key, value) {
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if (key == 'width' || key == 'height') {
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setSize();
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}
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});
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randomize();
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setSize();
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function randomize() {
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that.options({
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color: Ox.range(3).map(function() {
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return Ox.random(256);
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})
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});
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}
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function setSize() {
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that.css({
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width: self.options.width + 'px',
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height: self.options.height + 'px'
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})
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}
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/*@
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.randomize <f> Randomizes the colors of the box
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() -> <o> The Extended Box object
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*/
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that.randomize = randomize;
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return that;
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};
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//@
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/*
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And finally, this is how everything gets parsed and displayed, in less than 30
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lines of code. Note that it would be more efficient to parse the source once
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```
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var doc = Ox.doc(source);
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```
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and use
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```
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Ox.SyntaxHighlighter({
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showLineNumbers: true,
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source: source
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})
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```
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and
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```
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Ox.TreeList({data: doc})
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```
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and
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```
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Ox.DocPanel({
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expanded: true,
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items: doc,
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getModule: function() { return 'My'; },
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path: path,
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stripComments: true
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});
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```
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— but the thing we want to demonstrate here is that we can just pass files to
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Ox.SyntaxHighlighter and Ox.DocPanel, and they'll do the rest.
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*/
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Ox.load('UI', function() {
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var file = 'example.js',
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path = Ox.PATH + '../examples/documentation/oxdoc/js/';
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Ox.get(path + file, function(source) {
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Ox.TabPanel({
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content: function(id) {
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return id == 'source' ? Ox.SyntaxHighlighter({
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file: path + file,
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showLineNumbers: true,
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}).css({overflowY: 'scroll'})
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: id == 'items' ? Ox.TreeList({data: Ox.doc(source)})
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: Ox.DocPanel({
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expanded: true,
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files: [file],
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getModule: function() { return 'My'; },
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path: path,
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stripComments: true
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});
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},
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tabs: [
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{id: 'source', title: 'Source Code', selected: true},
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{id: 'items', title: 'Parsed Documentation'},
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{id: 'panel', title: 'Documentation Browser'}
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]
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}).appendTo(Ox.$body);
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});
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});
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