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752 lines
22 KiB
752 lines
22 KiB
/* ******************************
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Module
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State
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Change text based on state context
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Hover/down/Active/Inactive
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Author: Jack Lukic
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Last revision: May 2012
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State text module is used to apply text to a given node
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depending on the elements "state"
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State is either defined as "active" or "inactive" depending
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on the returned value of a test function
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Usage:
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$button
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.state({
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states: {
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active: true
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},
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text: {
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inactive: 'Follow',
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active : 'Following',
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enable : 'Add',
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disable : 'Remove'
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}
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})
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;
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"Follow", turns to "Add" on hover, then "Following" on active
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and finally "Remove" on active hover
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This plugin works in correlation to API module and will, by default,
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use deffered object accept/reject to determine state.
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****************************** */
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;(function ( $, window, document, undefined ) {
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$.fn.state = function(parameters) {
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var
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$allModules = $(this),
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settings = $.extend(true, {}, $.fn.state.settings, parameters),
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moduleSelector = $allModules.selector || '',
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time = new Date().getTime(),
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performance = [],
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query = arguments[0],
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methodInvoked = (typeof query == 'string'),
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queryArguments = [].slice.call(arguments, 1),
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// shortcuts
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error = settings.error,
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metadata = settings.metadata,
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className = settings.className,
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namespace = settings.namespace,
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states = settings.states,
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text = settings.text,
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eventNamespace = '.' + namespace,
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moduleNamespace = namespace + '-module',
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invokedResponse
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;
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$allModules
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.each(function() {
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var
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$module = $(this),
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element = this,
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instance = $module.data(moduleNamespace),
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module
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;
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module = {
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initialize: function() {
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module.verbose('Initializing module');
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// allow module to guess desired state based on element
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if(settings.automatic) {
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module.add.defaults();
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}
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// bind events with delegated events
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if(settings.context && moduleSelector !== '') {
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if( module.allows('hover') ) {
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$(element, settings.context)
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.on(moduleSelector, 'mouseenter' + eventNamespace, module.enable.hover)
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.on(moduleSelector, 'mouseleave' + eventNamespace, module.disable.hover)
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;
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}
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if( module.allows('down') ) {
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$(element, settings.context)
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.on(moduleSelector, 'mousedown' + eventNamespace, module.enable.down)
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.on(moduleSelector, 'mouseup' + eventNamespace, module.disable.down)
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;
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}
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if( module.allows('focus') ) {
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$(element, settings.context)
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.on(moduleSelector, 'focus' + eventNamespace, module.enable.focus)
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.on(moduleSelector, 'blur' + eventNamespace, module.disable.focus)
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;
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}
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$(settings.context)
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.on(moduleSelector, 'mouseenter' + eventNamespace, module.change.text)
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.on(moduleSelector, 'mouseleave' + eventNamespace, module.reset.text)
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.on(moduleSelector, 'click' + eventNamespace, module.toggle.state)
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;
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}
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else {
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if( module.allows('hover') ) {
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$module
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.on('mouseenter' + eventNamespace, module.enable.hover)
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.on('mouseleave' + eventNamespace, module.disable.hover)
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;
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}
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if( module.allows('down') ) {
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$module
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.on('mousedown' + eventNamespace, module.enable.down)
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.on('mouseup' + eventNamespace, module.disable.down)
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;
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}
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if( module.allows('focus') ) {
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$module
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.on('focus' + eventNamespace, module.enable.focus)
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.on('blur' + eventNamespace, module.disable.focus)
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;
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}
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$module
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.on('mouseenter' + eventNamespace, module.change.text)
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.on('mouseleave' + eventNamespace, module.reset.text)
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.on('click' + eventNamespace, module.toggle.state)
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;
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}
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module.instantiate();
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},
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instantiate: function() {
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module.verbose('Storing instance of module', module);
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instance = module;
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$module
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.data(moduleNamespace, module)
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;
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},
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destroy: function() {
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module.verbose('Destroying previous module', instance);
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$module
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.off(eventNamespace)
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.removeData(moduleNamespace)
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;
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},
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refresh: function() {
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module.verbose('Refreshing selector cache');
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$module = $(element);
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},
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add: {
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defaults: function() {
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var
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userStates = parameters && $.isPlainObject(parameters.states)
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? parameters.states
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: {}
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;
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$.each(settings.defaults, function(type, typeStates) {
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if( module.is[type] !== undefined && module.is[type]() ) {
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module.verbose('Adding default states', type, element);
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$.extend(settings.states, typeStates, userStates);
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}
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});
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}
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},
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is: {
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active: function() {
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return $module.hasClass(className.active);
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},
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loading: function() {
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return $module.hasClass(className.loading);
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},
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inactive: function() {
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return !( $module.hasClass(className.active) );
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},
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enabled: function() {
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return !( $module.is(settings.filter.active) );
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},
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disabled: function() {
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return ( $module.is(settings.filter.active) );
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},
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textEnabled: function() {
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return !( $module.is(settings.filter.text) );
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},
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// definitions for automatic type detection
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button: function() {
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return $module.is('.button:not(a, .submit)');
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},
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input: function() {
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return $module.is('input');
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}
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},
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allow: function(state) {
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module.debug('Now allowing state', state);
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states[state] = true;
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},
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disallow: function(state) {
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module.debug('No longer allowing', state);
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states[state] = false;
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},
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allows: function(state) {
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return states[state] || false;
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},
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enable: {
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state: function(state) {
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if(module.allows(state)) {
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$module.addClass( className[state] );
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}
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},
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// convenience
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focus: function() {
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$module.addClass(className.focus);
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},
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hover: function() {
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$module.addClass(className.hover);
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},
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down: function() {
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$module.addClass(className.down);
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},
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},
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disable: {
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state: function(state) {
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if(module.allows(state)) {
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$module.removeClass( className[state] );
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}
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},
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// convenience
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focus: function() {
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$module.removeClass(className.focus);
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},
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hover: function() {
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$module.removeClass(className.hover);
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},
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down: function() {
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$module.removeClass(className.down);
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},
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},
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toggle: {
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state: function() {
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var
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apiRequest = $module.data(metadata.promise)
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;
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if( module.allows('active') && module.is.enabled() ) {
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module.refresh();
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if(apiRequest !== undefined) {
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module.listenTo(apiRequest);
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}
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else {
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module.change.state();
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}
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}
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}
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},
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listenTo: function(apiRequest) {
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module.debug('API request detected, waiting for state signal', apiRequest);
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if(apiRequest) {
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if(text.loading) {
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module.update.text(text.loading);
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}
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$.when(apiRequest)
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.then(function() {
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if(apiRequest.state() == 'resolved') {
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module.debug('API request succeeded');
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settings.activateTest = function(){ return true; };
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settings.deactivateTest = function(){ return true; };
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}
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else {
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module.debug('API request failed');
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settings.activateTest = function(){ return false; };
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settings.deactivateTest = function(){ return false; };
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}
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module.change.state();
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})
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;
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}
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// xhr exists but set to false, beforeSend killed the xhr
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else {
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settings.activateTest = function(){ return false; };
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settings.deactivateTest = function(){ return false; };
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}
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},
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// checks whether active/inactive state can be given
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change: {
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state: function() {
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module.debug('Determining state change direction');
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// inactive to active change
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if( module.is.inactive() ) {
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module.activate();
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}
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else {
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module.deactivate();
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}
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if(settings.sync) {
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module.sync();
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}
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$.proxy(settings.onChange, element)();
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},
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text: function() {
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if( module.is.textEnabled() ) {
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if( module.is.active() ) {
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if(text.hover) {
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module.verbose('Changing text to hover text', text.hover);
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module.update.text(text.hover);
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}
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else if(text.disable) {
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module.verbose('Changing text to disable text', text.disable);
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module.update.text(text.disable);
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}
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}
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else {
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if(text.hover) {
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module.verbose('Changing text to hover text', text.disable);
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module.update.text(text.hover);
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}
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else if(text.enable){
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module.verbose('Changing text to enable text', text.enable);
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module.update.text(text.enable);
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}
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}
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}
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}
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},
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activate: function() {
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if( $.proxy(settings.activateTest, element)() ) {
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module.debug('Setting state to active');
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$module
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.addClass(className.active)
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;
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module.update.text(text.active);
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}
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$.proxy(settings.onActivate, element)();
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},
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deactivate: function() {
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if($.proxy(settings.deactivateTest, element)() ) {
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module.debug('Setting state to inactive');
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$module
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.removeClass(className.active)
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;
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module.update.text(text.inactive);
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}
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$.proxy(settings.onDeactivate, element)();
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},
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sync: function() {
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module.verbose('Syncing other buttons to current state');
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if( module.is.active() ) {
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$allModules
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.not($module)
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.state('activate');
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}
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else {
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$allModules
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.not($module)
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.state('deactivate')
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;
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}
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},
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get: {
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text: function() {
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return (settings.selector.text)
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? $module.find(settings.selector.text).text()
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: $module.html()
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;
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},
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textFor: function(state) {
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return text[state] || false;
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}
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},
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flash: {
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text: function(text, duration) {
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var
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previousText = module.get.text()
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;
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module.debug('Flashing text message', text, duration);
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text = text || settings.text.flash;
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duration = duration || settings.flashDuration;
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module.update.text(text);
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setTimeout(function(){
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module.update.text(previousText);
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}, duration);
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}
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},
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reset: {
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// on mouseout sets text to previous value
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text: function() {
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var
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activeText = text.active || $module.data(metadata.storedText),
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inactiveText = text.inactive || $module.data(metadata.storedText)
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;
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if( module.is.textEnabled() ) {
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if( module.is.active() && activeText) {
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module.verbose('Resetting active text', activeText);
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module.update.text(activeText);
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}
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else if(inactiveText) {
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module.verbose('Resetting inactive text', activeText);
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module.update.text(inactiveText);
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}
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}
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}
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},
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update: {
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text: function(text) {
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var
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currentText = module.get.text()
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;
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if(text && text !== currentText) {
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module.debug('Updating text', text);
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if(settings.selector.text) {
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$module
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.data(metadata.storedText, text)
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.find(settings.selector.text)
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.text(text)
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;
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}
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else {
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$module
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.data(metadata.storedText, text)
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.html(text)
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;
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}
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}
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else {
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module.debug('Text is already sane, ignoring update', text);
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}
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}
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},
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setting: function(name, value) {
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module.debug('Changing setting', 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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module.debug('Changing internal', 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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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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$.each(performance, function(index, data) {
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totalTime += data['Execution Time'];
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});
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title += ' ' + totalTime + 'ms';
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|
if(moduleSelector) {
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title += ' \'' + moduleSelector + '\'';
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|
}
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|
if($allModules.size() > 1) {
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|
title += ' ' + '(' + $allModules.size() + ')';
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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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|
;
|
|
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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}
|
|
else {
|
|
module.error(error.method);
|
|
return false;
|
|
}
|
|
});
|
|
}
|
|
if ( $.isFunction( found ) ) {
|
|
response = found.apply(context, passedArguments);
|
|
}
|
|
else if(found !== undefined) {
|
|
response = found;
|
|
}
|
|
if($.isArray(invokedResponse)) {
|
|
invokedResponse.push(response);
|
|
}
|
|
else if(typeof invokedResponse == 'string') {
|
|
invokedResponse = [invokedResponse, response];
|
|
}
|
|
else if(response !== undefined) {
|
|
invokedResponse = response;
|
|
}
|
|
return found;
|
|
}
|
|
};
|
|
if(methodInvoked) {
|
|
if(instance === undefined) {
|
|
module.initialize();
|
|
}
|
|
module.invoke(query);
|
|
}
|
|
else {
|
|
if(instance !== undefined) {
|
|
module.destroy();
|
|
}
|
|
module.initialize();
|
|
}
|
|
|
|
})
|
|
;
|
|
|
|
return (invokedResponse !== undefined)
|
|
? invokedResponse
|
|
: this
|
|
;
|
|
};
|
|
|
|
$.fn.state.settings = {
|
|
|
|
// module info
|
|
name : 'State',
|
|
|
|
// debug output
|
|
debug : true,
|
|
|
|
// verbose debug output
|
|
verbose : true,
|
|
|
|
// namespace for events
|
|
namespace : 'state',
|
|
|
|
// debug data includes performance
|
|
performance: true,
|
|
|
|
// callback occurs on state change
|
|
onActivate : function() {},
|
|
onDeactivate : function() {},
|
|
onChange : function() {},
|
|
|
|
// state test functions
|
|
activateTest : function() { return true; },
|
|
deactivateTest : function() { return true; },
|
|
|
|
// whether to automatically map default states
|
|
automatic : true,
|
|
|
|
// activate / deactivate changes all elements instantiated at same time
|
|
sync : false,
|
|
|
|
// default flash text duration, used for temporarily changing text of an element
|
|
flashDuration : 3000,
|
|
|
|
// selector filter
|
|
filter : {
|
|
text : '.loading, .disabled',
|
|
active : '.disabled'
|
|
},
|
|
|
|
context : false,
|
|
|
|
// error
|
|
error: {
|
|
method : 'The method you called is not defined.'
|
|
},
|
|
|
|
// metadata
|
|
metadata: {
|
|
promise : 'promise',
|
|
storedText : 'stored-text'
|
|
},
|
|
|
|
// change class on state
|
|
className: {
|
|
focus : 'focus',
|
|
hover : 'hover',
|
|
down : 'down',
|
|
active : 'active',
|
|
loading : 'loading'
|
|
},
|
|
|
|
selector: {
|
|
// selector for text node
|
|
text: false
|
|
},
|
|
|
|
defaults : {
|
|
input: {
|
|
hover : true,
|
|
focus : true,
|
|
down : true,
|
|
loading : false,
|
|
active : false
|
|
},
|
|
button: {
|
|
hover : true,
|
|
focus : false,
|
|
down : true,
|
|
active : true,
|
|
loading : true
|
|
}
|
|
},
|
|
|
|
states : {
|
|
hover : true,
|
|
focus : true,
|
|
down : true,
|
|
loading : false,
|
|
active : false
|
|
},
|
|
|
|
text : {
|
|
flash : false,
|
|
hover : false,
|
|
active : false,
|
|
inactive : false,
|
|
enable : false,
|
|
disable : false
|
|
}
|
|
|
|
};
|
|
|
|
|
|
|
|
})( jQuery, window , document );
|