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Former-commit-id: 57a6f24d95907c6722248e7a329b15e5ed51b0c5 Former-commit-id: 68cd7565cc1db6b1e38b22b88a025a38942eb01fbeta
Jack Lukic
12 years ago
7 changed files with 1036 additions and 128 deletions
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// # Semantic Modules
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// This particular pattern is useful for describing a group of elements which share behavior, for example a modal or a popup.
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// The module is made up of three parts: *a group definition*, *a singular definition*, and a *settings object*.
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//
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// Semantic is unique in that all arbitrary data is a setting. Semantic modules also are self documenting, with module.debug calls serving to explain state, and log performance data.
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// [Read more about coding conventions](#)
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/* |
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* # Semantic Module 1.0 |
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* http://github.com/quirkyinc/semantic
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* |
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* |
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* Copyright 2013 Contributors |
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* Released under the MIT license |
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* http://opensource.org/licenses/MIT
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* |
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* Released: April 17 2013 |
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*/ |
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;(function ( $, window, document, undefined ) { |
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$.fn.example = function(parameters) { |
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// ## Group
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// Some properties remain constant across all instances of a module.
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var |
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// Store a reference to the module group, this can be useful to refer to other modules inside each module
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$allModules = $(this), |
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// Extend settings to merge run-time settings with defaults
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settings = $.extend(true, {}, $.fn.example.settings, parameters), |
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// Define namespaces for storing module instance and binding events
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eventNamespace = '.' + settings.namespace, |
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moduleNamespace = 'module-' + settings.namespace, |
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// Preserve selector from outside each scope and mark current time for performance tracking
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selector = $allModules.selector || '', |
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time = new Date().getTime(), |
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performance = [], |
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// Preserve original arguments to determine if a method is being invoked
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query = arguments[0], |
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methodInvoked = (typeof query == 'string'), |
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queryArguments = [].slice.call(arguments, 1), |
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invokedResponse |
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; |
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// ## Singular
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// Iterate over all elements to initialize module
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$allModules |
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.each(function() { |
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var |
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// Cache selectors using selector definitions for access inside instance of module
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$module = $(this), |
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$text = $module.find(settings.selector.text), |
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// Define private variables which can be used to maintain internal state, these cannot be changed from outside the module closure so use conservatively
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foo = false, |
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// Define variables used to track module state. Default values are set using `a || b` syntax
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instance = $module.data(moduleNamespace), |
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element = this, |
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// Alias settings object for convenience and performance
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namespace = settings.namespace, |
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error = settings.error, |
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className = settings.className, |
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// You may also find it useful to alias your own settings
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text = settings.text, |
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module |
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; |
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// ## Module Behavior
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module = { |
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// ### Required
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// #### Initialize
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// Initialize attaches events and preserves each instance in html metadata
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initialize: function() { |
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module.verbose('Initializing module for', element); |
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$module |
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.on('click' + eventNamespace, module.exampleBehavior) |
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; |
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// The instance is just a copy of the module definition, we store it in metadata so we can use it outside of scope, but also define it for immediate use
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instance = module; |
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$module |
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.data(moduleNamespace, instance) |
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; |
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}, |
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// #### Destroy
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// Removes all events and the instance copy from metadata
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destroy: function() { |
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module.verbose('Destroying previous module for', element); |
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$module |
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.removeData(moduleNamespace) |
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.off(eventNamespace) |
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; |
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}, |
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// #### Refresh
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// Selectors are cached so we sometimes need to manually refresh the cache
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refresh: function() { |
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module.verbose('Refreshing selector cache for', element); |
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$module = $(element); |
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$text = $(this).find(settings.selector.text); |
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}, |
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// ### Custom
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// #### By Event
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// Sometimes it makes sense to call an event handler by its type if it is dependent on the event to behave properly
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event: { |
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click: function(event) { |
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module.verbose('Preventing default action'); |
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if( !$module.hasClass(className.disabled) ) { |
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module.behavior(); |
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} |
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event.preventDefault(); |
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} |
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}, |
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// #### By Function
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// Other times events make more sense for methods to be called by their function if it is ambivalent to how it is invoked
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behavior: function() { |
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module.debug('Changing the text to a new value', text); |
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if( !module.has.text() ) { |
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module.set.text( text); |
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} |
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}, |
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// #### Vocabulary
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// Custom methods should be defined with consistent vocabulary some useful terms: "has", "set", "get", "change", "add", "remove"
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//
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// This makes it easier for new developers to get to know your module without learning your schema
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has: { |
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text: function(state) { |
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module.verbose('Checking whether text state exists', state); |
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if( text[state] === undefined ) { |
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module.error(error.noText); |
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return false; |
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} |
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return true; |
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} |
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}, |
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set: { |
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text: function(state) { |
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module.verbose('Setting text to new state', state); |
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if( module.has.text(state) ) { |
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$text |
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.text( text[state] ) |
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; |
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settings.onChange(); |
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} |
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} |
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}, |
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// ### Standard
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// #### Setting
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// Module settings can be read or set using this method
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//
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// Settings can either be specified by modifying the module defaults, by initializing the module with a settings object, or by changing a setting by invoking this method
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// `$(.foo').example('setting', 'moduleName');`
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setting: function(name, value) { |
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if(value !== undefined) { |
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if( $.isPlainObject(name) ) { |
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$.extend(true, settings, name); |
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} |
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else { |
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settings[name] = value; |
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} |
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} |
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else { |
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return settings[name]; |
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} |
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}, |
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// #### Internal
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// Module internals can be set or retrieved as well
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// `$(.foo').example('internal', 'behavior', function() { // do something });`
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internal: function(name, value) { |
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if(value !== undefined) { |
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if( $.isPlainObject(name) ) { |
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$.extend(true, module, name); |
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} |
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else { |
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module[name] = value; |
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} |
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} |
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else { |
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return module[name]; |
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} |
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}, |
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// #### Debug
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// Debug pushes arguments to the console formatted as a debug statement
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debug: function() { |
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if(settings.debug) { |
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module.performance.log(arguments[0]); |
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module.verbose = Function.prototype.bind.call(console.info, console, settings.moduleName + ':'); |
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} |
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}, |
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// #### Verbose
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// Calling verbose internally allows for additional data to be logged which can assist in debugging
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verbose: function() { |
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if(settings.verbose && settings.debug) { |
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module.performance.log(arguments[0]); |
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module.verbose = Function.prototype.bind.call(console.info, console, settings.moduleName + ':'); |
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} |
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}, |
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// #### Error
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// Error allows for the module to report named error messages, it may be useful to modify this to push error messages to the user. Error messages are defined in the modules settings object.
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error: function() { |
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if(console.log !== undefined) { |
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module.error = Function.prototype.bind.call(console.log, console, settings.moduleName + ':'); |
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} |
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}, |
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// #### Performance
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// This is called on each debug statement and logs the time since the last debug statement.
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performance: { |
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log: function(message) { |
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var |
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currentTime, |
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executionTime, |
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previousTime |
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; |
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if(settings.performance) { |
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currentTime = new Date().getTime(); |
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previousTime = time || currentTime, |
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executionTime = currentTime - previousTime; |
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time = currentTime; |
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performance.push({ |
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'Name' : message, |
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'Execution Time' : executionTime |
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}); |
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clearTimeout(module.performance.timer); |
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module.performance.timer = setTimeout(module.performance.display, 100); |
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} |
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}, |
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// Performance data is assumed to be complete 500ms after the last log message receieved
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display: function() { |
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var |
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title = settings.moduleName + ' Performance (' + selector + ')', |
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caption = settings.moduleName + ': ' + selector + '(' + $allModules.size() + ' elements)', |
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totalExecutionTime = 0 |
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; |
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if( (console.group !== undefined || console.table !== undefined) && performance.length > 0) { |
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console.groupCollapsed(title ); |
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if(console.table) { |
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$.each(performance, function(index, data) { |
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totalExecutionTime += data['Execution Time']; |
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}); |
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console.table(performance); |
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} |
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else { |
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$.each(performance, function(index, data) { |
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totalExecutionTime += data['Execution Time']; |
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}); |
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} |
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console.log('Total Execution Time:', totalExecutionTime); |
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console.groupEnd(); |
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performance = []; |
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time = false; |
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} |
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} |
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}, |
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// #### Invoke
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// Invoke is used to lookup and invoke a method or property by a dot notation string definition, for example
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// `$('.foo').example('invoke', 'set.text', 'Foo')`
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invoke: function(query, passedArguments, context) { |
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var |
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maxDepth, |
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found |
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; |
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passedArguments = passedArguments || queryArguments; |
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context = element || context; |
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if(typeof query == 'string' && instance !== undefined) { |
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query = query.split('.'); |
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maxDepth = query.length - 1; |
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$.each(query, function(depth, value) { |
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if( $.isPlainObject( instance[value] ) && (depth != maxDepth) ) { |
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instance = instance[value]; |
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return true; |
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} |
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else if( instance[value] !== undefined ) { |
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found = instance[value]; |
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return true; |
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} |
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module.error(error.method); |
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return false; |
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}); |
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} |
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if ( $.isFunction( found ) ) { |
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module.verbose('Executing invoked function', found); |
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return found.apply(context, passedArguments); |
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} |
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return found || false; |
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} |
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}; |
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// ### Determining Intent
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// Invoking a method directly
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// $('.foo').module('set.text', 'Ho hum');
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// The module checks to see if you passed in a method name to call
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if(methodInvoked) { |
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if(instance === undefined) { |
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module.initialize(); |
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} |
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invokedResponse = module.invoke(query); |
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} |
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// If you didn't pass in anything it can assume you are initializing the module
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else { |
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if(instance !== undefined) { |
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module.destroy(); |
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} |
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module.initialize(); |
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} |
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}) |
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; |
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// If you called invoke, you may have a returned value which shoudl be returned, otherwise allow the call to chain
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return (invokedResponse) |
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? invokedResponse |
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: this |
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; |
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}; |
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// ## Settings
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// It is necessary to include a settings object which specifies the defaults for your module
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$.fn.example.settings = { |
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// ### Required
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// Used in debug statements to refer to the module itself
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moduleName : 'Example Module', |
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// Whether debug content should be outputted to console
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debug : true, |
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// Whether extra debug content should be outputted
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verbose : false, |
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// Whether to track performance data
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performance : false, |
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// A unique identifier used to namespace events,and preserve the module instance
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namespace : 'example', |
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// ### Optional
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// Selectors used by your module
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selector : { |
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example : '.example' |
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}, |
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// Error messages returned by the module
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error: { |
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noText : 'The text you tried to display has not been defined.', method : 'The method you called is not defined.' |
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}, |
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// Class names which your module refers to
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className : { |
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disabled : 'disabled' |
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}, |
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// Metadata stored or retrieved by your module. `$('.foo').data('value');`
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metadata: { |
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notUsed: 'notUsed' |
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}, |
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// ### Callbacks
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// Callbacks are often useful to include in your settings object
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onChange : function() {}, |
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// ### Definition Specific
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// You may also want to include settings specific to your module's function
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text: { |
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hover : 'You are hovering me now', |
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click : 'You clicked on me' |
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} |
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}; |
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})( jQuery, window , document ); |
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@ -0,0 +1,277 @@ |
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;(function ( $, window, document, undefined ) { |
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$.fn.example = function(parameters) { |
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var |
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$allModules = $(this), |
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settings = $.extend(true, {}, $.fn.example.settings, parameters), |
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eventNamespace = '.' + settings.namespace, |
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moduleNamespace = 'module-' + settings.namespace, |
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selector = $allModules.selector || '', |
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time = new Date().getTime(), |
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performance = [], |
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query = arguments[0], |
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methodInvoked = (typeof query == 'string'), |
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queryArguments = [].slice.call(arguments, 1), |
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invokedResponse |
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; |
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$allModules |
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.each(function() { |
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var |
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$module = $(this), |
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$text = $module.find(settings.selector.text), |
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foo = false, |
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instance = $module.data(moduleNamespace), |
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element = this, |
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namespace = settings.namespace, |
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error = settings.error, |
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className = settings.className, |
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text = settings.text, |
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module |
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; |
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module = { |
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initialize: function() { |
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module.verbose('Initializing module for', element); |
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$module |
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.on('click' + eventNamespace, module.exampleBehavior) |
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; |
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instance = module; |
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$module |
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.data(moduleNamespace, instance) |
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; |
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}, |
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destroy: function() { |
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module.verbose('Destroying previous module for', element); |
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$module |
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.removeData(moduleNamespace) |
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.off(eventNamespace) |
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; |
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}, |
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refresh: function() { |
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module.verbose('Refreshing selector cache for', element); |
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$module = $(element); |
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$text = $(this).find(settings.selector.text); |
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}, |
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event: { |
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click: function(event) { |
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module.verbose('Preventing default action'); |
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if( !$module.hasClass(className.disabled) ) { |
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module.behavior(); |
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} |
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event.preventDefault(); |
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} |
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}, |
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behavior: function() { |
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module.debug('Changing the text to a new value', text); |
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if( !module.has.text() ) { |
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module.set.text( text); |
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} |
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}, |
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has: { |
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text: function(state) { |
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module.verbose('Checking whether text state exists', state); |
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if( text[state] === undefined ) { |
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module.error(error.noText); |
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return false; |
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} |
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return true; |
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} |
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}, |
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set: { |
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text: function(state) { |
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module.verbose('Setting text to new state', state); |
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if( module.has.text(state) ) { |
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$text |
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.text( text[state] ) |
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; |
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settings.onChange(); |
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} |
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} |
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}, |
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setting: function(name, value) { |
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if(value !== undefined) { |
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if( $.isPlainObject(name) ) { |
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$.extend(true, settings, name); |
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} |
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else { |
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settings[name] = value; |
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} |
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} |
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else { |
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return settings[name]; |
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} |
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}, |
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internal: function(name, value) { |
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if(value !== undefined) { |
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if( $.isPlainObject(name) ) { |
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$.extend(true, module, name); |
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} |
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else { |
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module[name] = value; |
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} |
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} |
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else { |
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return module[name]; |
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} |
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}, |
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debug: function() { |
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if(settings.debug) { |
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module.performance.log(arguments[0]); |
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module.verbose = Function.prototype.bind.call(console.info, console, settings.moduleName + ':'); |
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} |
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}, |
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verbose: function() { |
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if(settings.verbose && settings.debug) { |
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module.performance.log(arguments[0]); |
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module.verbose = Function.prototype.bind.call(console.info, console, settings.moduleName + ':'); |
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} |
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}, |
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error: function() { |
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if(console.log !== undefined) { |
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module.error = Function.prototype.bind.call(console.log, console, settings.moduleName + ':'); |
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} |
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}, |
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performance: { |
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log: function(message) { |
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var |
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currentTime, |
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executionTime, |
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previousTime |
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; |
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if(settings.performance) { |
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currentTime = new Date().getTime(); |
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previousTime = time || currentTime, |
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executionTime = currentTime - previousTime; |
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time = currentTime; |
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performance.push({ |
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'Name' : message, |
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'Execution Time' : executionTime |
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}); |
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clearTimeout(module.performance.timer); |
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module.performance.timer = setTimeout(module.performance.display, 100); |
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} |
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}, |
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display: function() { |
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var |
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title = settings.moduleName + ' Performance (' + selector + ')', |
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caption = settings.moduleName + ': ' + selector + '(' + $allModules.size() + ' elements)', |
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totalExecutionTime = 0 |
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; |
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if( (console.group !== undefined || console.table !== undefined) && performance.length > 0) { |
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console.groupCollapsed(title ); |
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if(console.table) { |
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$.each(performance, function(index, data) { |
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totalExecutionTime += data['Execution Time']; |
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}); |
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console.table(performance); |
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} |
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else { |
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$.each(performance, function(index, data) { |
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totalExecutionTime += data['Execution Time']; |
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}); |
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} |
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console.log('Total Execution Time:', totalExecutionTime); |
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console.groupEnd(); |
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performance = []; |
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time = false; |
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} |
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} |
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}, |
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invoke: function(query, passedArguments, context) { |
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var |
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maxDepth, |
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found |
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; |
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passedArguments = passedArguments || queryArguments; |
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context = element || context; |
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if(typeof query == 'string' && instance !== undefined) { |
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query = query.split('.'); |
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maxDepth = query.length - 1; |
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$.each(query, function(depth, value) { |
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if( $.isPlainObject( instance[value] ) && (depth != maxDepth) ) { |
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instance = instance[value]; |
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return true; |
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} |
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else if( instance[value] !== undefined ) { |
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found = instance[value]; |
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return true; |
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} |
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module.error(error.method); |
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return false; |
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}); |
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} |
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if ( $.isFunction( found ) ) { |
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module.verbose('Executing invoked function', found); |
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return found.apply(context, passedArguments); |
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} |
|||
return found || false; |
|||
} |
|||
}; |
|||
|
|||
if(methodInvoked) { |
|||
if(instance === undefined) { |
|||
module.initialize(); |
|||
} |
|||
invokedResponse = module.invoke(query); |
|||
} |
|||
else { |
|||
if(instance !== undefined) { |
|||
module.destroy(); |
|||
} |
|||
module.initialize(); |
|||
} |
|||
|
|||
}) |
|||
; |
|||
|
|||
return (invokedResponse) |
|||
? invokedResponse |
|||
: this |
|||
; |
|||
}; |
|||
|
|||
$.fn.example.settings = { |
|||
|
|||
moduleName : 'Example Module', |
|||
debug : true, |
|||
verbose : false, |
|||
performance : false, |
|||
namespace : 'example', |
|||
|
|||
selector : { |
|||
example : '.example' |
|||
}, |
|||
|
|||
error: { |
|||
noText : 'The text you tried to display has not been defined.', method : 'The method you called is not defined.' |
|||
}, |
|||
|
|||
className : { |
|||
disabled : 'disabled' |
|||
}, |
|||
|
|||
metadata: { |
|||
notUsed: 'notUsed' |
|||
}, |
|||
|
|||
onChange : function() {}, |
|||
|
|||
text: { |
|||
hover : 'You are hovering me now', |
|||
click : 'You clicked on me' |
|||
} |
|||
|
|||
}; |
|||
|
|||
|
|||
})( jQuery, window , document ); |
|||
Loading…
Reference in new issue