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634 lines
20 KiB
634 lines
20 KiB
/*
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* # Semantic - API
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* http://github.com/jlukic/semantic-ui/
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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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*/
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;(function ( $, window, document, undefined ) {
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$.api = $.fn.api = function(parameters) {
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var
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settings = $.extend(true, {}, $.api.settings, parameters),
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// if this keyword isn't a jQuery object, create one
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context = (typeof this != 'function')
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? this
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: $('<div/>'),
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// context defines the element used for loading/error state
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$context = (settings.stateContext)
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? $(settings.stateContext)
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: $(context),
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// module is the thing that initiates the api action, can be independent of context
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$module = typeof this == 'object'
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? $(context)
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: $context,
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element = this,
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time = new Date().getTime(),
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performance = [],
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moduleSelector = $module.selector || '',
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moduleNamespace = settings.namespace + '-module',
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className = settings.className,
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metadata = settings.metadata,
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error = settings.error,
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instance = $module.data(moduleNamespace),
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query = arguments[0],
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methodInvoked = (instance !== undefined && typeof query == 'string'),
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queryArguments = [].slice.call(arguments, 1),
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module,
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returnedValue
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;
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module = {
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initialize: function() {
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var
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runSettings,
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loadingTimer = new Date().getTime(),
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loadingDelay,
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promise,
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url,
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formData = {},
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data,
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ajaxSettings = {},
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xhr
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;
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// serialize parent form if requested!
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if(settings.serializeForm && $(this).toJSON() !== undefined) {
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formData = module.get.formData();
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module.debug('Adding form data to API Request', formData);
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$.extend(true, settings.data, formData);
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}
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// let beforeSend change settings object
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runSettings = $.proxy(settings.beforeSend, $module)(settings);
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// check for exit conditions
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if(runSettings !== undefined && !runSettings) {
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module.error(error.beforeSend);
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module.reset();
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return;
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}
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// get real url from template
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url = module.get.url( module.get.templateURL() );
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// exit conditions reached from missing url parameters
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if( !url ) {
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module.error(error.missingURL);
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module.reset();
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return;
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}
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// promise handles notification on api request, so loading min. delay can occur for all notifications
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promise =
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$.Deferred()
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.always(function() {
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if(settings.stateContext) {
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$context
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.removeClass(className.loading)
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;
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}
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$.proxy(settings.complete, $module)();
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})
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.done(function(response) {
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module.debug('API request successful');
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// take a stab at finding success state if json
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if(settings.dataType == 'json') {
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if (response.error !== undefined) {
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$.proxy(settings.failure, $context)(response.error, settings, $module);
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}
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else if ($.isArray(response.errors)) {
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$.proxy(settings.failure, $context)(response.errors[0], settings, $module);
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}
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else {
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$.proxy(settings.success, $context)(response, settings, $module);
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}
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}
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// otherwise
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else {
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$.proxy(settings.success, $context)(response, settings, $module);
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}
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})
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.fail(function(xhr, status, httpMessage) {
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var
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errorMessage = (settings.error[status] !== undefined)
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? settings.error[status]
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: httpMessage,
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response
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;
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// let em know unless request aborted
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if(xhr !== undefined) {
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// readyState 4 = done, anything less is not really sent
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if(xhr.readyState !== undefined && xhr.readyState == 4) {
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// if http status code returned and json returned error, look for it
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if( xhr.status != 200 && httpMessage !== undefined && httpMessage !== '') {
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module.error(error.statusMessage + httpMessage);
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}
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else {
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if(status == 'error' && settings.dataType == 'json') {
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try {
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response = $.parseJSON(xhr.responseText);
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if(response && response.error !== undefined) {
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errorMessage = response.error;
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}
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}
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catch(error) {
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module.error(error.JSONParse);
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}
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}
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}
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$context
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.removeClass(className.loading)
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.addClass(className.error)
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;
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// show error state only for duration specified in settings
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if(settings.errorLength > 0) {
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setTimeout(function(){
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$context
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.removeClass(className.error)
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;
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}, settings.errorLength);
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}
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module.debug('API Request error:', errorMessage);
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$.proxy(settings.failure, $context)(errorMessage, settings, this);
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}
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else {
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module.debug('Request Aborted (Most likely caused by page change)');
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}
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}
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})
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;
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// look for params in data
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$.extend(true, ajaxSettings, settings, {
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success : function(){},
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failure : function(){},
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complete : function(){},
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type : settings.method || settings.type,
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data : data,
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url : url,
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beforeSend : settings.beforeXHR
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});
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if(settings.stateContext) {
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$context
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.addClass(className.loading)
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;
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}
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if(settings.progress) {
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module.verbose('Adding progress events');
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$.extend(true, ajaxSettings, {
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xhr: function() {
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var
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xhr = new window.XMLHttpRequest()
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;
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xhr.upload.addEventListener('progress', function(event) {
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var
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percentComplete
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;
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if (event.lengthComputable) {
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percentComplete = Math.round(event.loaded / event.total * 10000) / 100 + '%';
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$.proxy(settings.progress, $context)(percentComplete, event);
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}
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}, false);
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xhr.addEventListener('progress', function(event) {
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var
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percentComplete
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;
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if (event.lengthComputable) {
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percentComplete = Math.round(event.loaded / event.total * 10000) / 100 + '%';
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$.proxy(settings.progress, $context)(percentComplete, event);
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}
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}, false);
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return xhr;
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}
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});
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}
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module.verbose('Creating AJAX request with settings: ', ajaxSettings);
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xhr =
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$.ajax(ajaxSettings)
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.always(function() {
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// calculate if loading time was below minimum threshold
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loadingDelay = ( settings.loadingLength - (new Date().getTime() - loadingTimer) );
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settings.loadingDelay = loadingDelay < 0
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? 0
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: loadingDelay
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;
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})
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.done(function(response) {
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var
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context = this
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;
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setTimeout(function(){
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promise.resolveWith(context, [response]);
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}, settings.loadingDelay);
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})
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.fail(function(xhr, status, httpMessage) {
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var
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context = this
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;
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// page triggers abort on navigation, dont show error
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if(status != 'abort') {
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setTimeout(function(){
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promise.rejectWith(context, [xhr, status, httpMessage]);
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}, settings.loadingDelay);
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}
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else {
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$context
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.removeClass(className.error)
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.removeClass(className.loading)
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;
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}
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})
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;
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if(settings.stateContext) {
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$module
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.data(metadata.promise, promise)
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.data(metadata.xhr, xhr)
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;
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}
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},
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get: {
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formData: function() {
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return $module
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.closest('form')
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.toJSON()
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;
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},
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templateURL: function() {
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var
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action = $module.data(settings.metadata.action) || settings.action || false,
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url
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;
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if(action) {
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module.debug('Creating url for: ', action);
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if(settings.api[action] !== undefined) {
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url = settings.api[action];
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}
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else {
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module.error(error.missingAction);
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}
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}
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// override with url if specified
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if(settings.url) {
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url = settings.url;
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module.debug('Getting url', url);
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}
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return url;
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},
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url: function(url, urlData) {
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var
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urlVariables
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;
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if(url) {
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urlVariables = url.match(settings.regExpTemplate);
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urlData = urlData || settings.urlData;
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if(urlVariables) {
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module.debug('Looking for URL variables', urlVariables);
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$.each(urlVariables, function(index, templateValue){
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var
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term = templateValue.substr( 2, templateValue.length - 3),
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termValue = ($.isPlainObject(urlData) && urlData[term] !== undefined)
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? urlData[term]
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: ($module.data(term) !== undefined)
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? $module.data(term)
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: urlData[term]
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;
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module.verbose('Looking for variable', term, $module, $module.data(term), urlData[term]);
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// remove optional value
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if(termValue === false) {
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module.debug('Removing variable from URL', urlVariables);
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url = url.replace('/' + templateValue, '');
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}
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// undefined condition
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else if(termValue === undefined || !termValue) {
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module.error(error.missingParameter + term);
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url = false;
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return false;
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}
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else {
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url = url.replace(templateValue, termValue);
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}
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});
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}
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}
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return url;
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}
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},
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// reset api request
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reset: function() {
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$module
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.data(metadata.promise, false)
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.data(metadata.xhr, false)
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;
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$context
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.removeClass(className.error)
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.removeClass(className.loading)
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;
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},
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setting: function(name, value) {
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if( $.isPlainObject(name) ) {
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$.extend(true, settings, name);
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}
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else if(value !== undefined) {
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settings[name] = value;
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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( $.isPlainObject(name) ) {
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$.extend(true, module, name);
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}
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else if(value !== undefined) {
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module[name] = value;
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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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if(settings.performance) {
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module.performance.log(arguments);
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}
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else {
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module.debug = Function.prototype.bind.call(console.info, console, settings.name + ':');
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module.debug.apply(console, arguments);
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}
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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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if(settings.performance) {
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module.performance.log(arguments);
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}
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else {
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module.verbose = Function.prototype.bind.call(console.info, console, settings.name + ':');
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module.verbose.apply(console, arguments);
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}
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}
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},
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error: function() {
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module.error = Function.prototype.bind.call(console.error, console, settings.name + ':');
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module.error.apply(console, arguments);
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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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'Element' : element,
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'Name' : message[0],
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'Arguments' : [].slice.call(message, 1) || '',
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'Execution Time' : executionTime
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});
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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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display: function() {
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var
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title = settings.name + ':',
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totalTime = 0
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;
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time = false;
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clearTimeout(module.performance.timer);
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$.each(performance, function(index, data) {
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totalTime += data['Execution Time'];
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});
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title += ' ' + totalTime + 'ms';
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if(moduleSelector) {
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title += ' \'' + moduleSelector + '\'';
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}
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if( (console.group !== undefined || console.table !== undefined) && performance.length > 0) {
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console.groupCollapsed(title);
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if(console.table) {
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console.table(performance);
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}
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else {
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$.each(performance, function(index, data) {
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console.log(data['Name'] + ': ' + data['Execution Time']+'ms');
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});
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}
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console.groupEnd();
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}
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performance = [];
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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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response
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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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var camelCaseValue = (depth != maxDepth)
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? value + query[depth + 1].charAt(0).toUpperCase() + query[depth + 1].slice(1)
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: query
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;
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if( $.isPlainObject( instance[value] ) && (depth != maxDepth) ) {
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instance = instance[value];
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}
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else if( $.isPlainObject( instance[camelCaseValue] ) && (depth != maxDepth) ) {
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instance = instance[camelCaseValue];
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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 false;
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}
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else if( instance[camelCaseValue] !== undefined ) {
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found = instance[camelCaseValue];
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return false;
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}
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else {
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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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}
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if ( $.isFunction( found ) ) {
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response = found.apply(context, passedArguments);
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}
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else if(found !== undefined) {
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response = found;
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}
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if($.isArray(returnedValue)) {
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returnedValue.push(response);
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}
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else if(returnedValue !== undefined) {
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returnedValue = [returnedValue, response];
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}
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else if(response !== undefined) {
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returnedValue = response;
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}
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return found;
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}
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};
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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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module.invoke(query);
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}
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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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return (returnedValue !== undefined)
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? returnedValue
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: this
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;
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};
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|
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// handle DOM attachment to API functionality
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$.fn.apiButton = function(parameters) {
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$(this)
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.each(function(){
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var
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// if only function passed it is success callback
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$module = $(this),
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selector = $(this).selector || '',
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|
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settings = ( $.isFunction(parameters) )
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? $.extend(true, {}, $.api.settings, $.fn.apiButton.settings, { stateContext: this, success: parameters })
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: $.extend(true, {}, $.api.settings, $.fn.apiButton.settings, { stateContext: this}, parameters),
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module
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;
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module = {
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initialize: function() {
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if(settings.context && selector !== '') {
|
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$(settings.context)
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.on(selector, 'click.' + settings.namespace, module.click)
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;
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}
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else {
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$module
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.on('click.' + settings.namespace, module.click)
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;
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}
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},
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click: function() {
|
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if(!settings.filter || $(this).filter(settings.filter).size() === 0) {
|
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$.proxy( $.api, this )(settings);
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}
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}
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};
|
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module.initialize();
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})
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;
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return this;
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};
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$.api.settings = {
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name : 'API',
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namespace : 'api',
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debug : true,
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verbose : true,
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performance : true,
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|
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api : {},
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|
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beforeSend : function(settings) {
|
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return settings;
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},
|
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beforeXHR : function(xhr) {},
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success : function(response) {},
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complete : function(response) {},
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failure : function(errorCode) {},
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progress : false,
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|
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error : {
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missingAction : 'API action used but no url was defined',
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missingURL : 'URL not specified for the API action',
|
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missingParameter : 'Missing an essential URL parameter: ',
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|
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timeout : 'Your request timed out',
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error : 'There was an error with your request',
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parseError : 'There was an error parsing your request',
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JSONParse : 'JSON could not be parsed during error handling',
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statusMessage : 'Server gave an error: ',
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beforeSend : 'The before send function has aborted the request',
|
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exitConditions : 'API Request Aborted. Exit conditions met'
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},
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|
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className: {
|
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loading : 'loading',
|
|
error : 'error'
|
|
},
|
|
|
|
metadata: {
|
|
action : 'action',
|
|
promise : 'promise',
|
|
xhr : 'xhr'
|
|
},
|
|
|
|
regExpTemplate: /\{\$([A-z]+)\}/g,
|
|
|
|
action : false,
|
|
url : false,
|
|
urlData : false,
|
|
serializeForm : false,
|
|
|
|
stateContext : false,
|
|
|
|
method : 'get',
|
|
data : {},
|
|
dataType : 'json',
|
|
cache : true,
|
|
|
|
loadingLength : 200,
|
|
errorLength : 2000
|
|
|
|
};
|
|
|
|
$.fn.apiButton.settings = {
|
|
filter : '.disabled, .loading',
|
|
context : false,
|
|
stateContext : false
|
|
};
|
|
|
|
})( jQuery, window , document );
|