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apm.emtusahuelva.es/js/annyang.min.js

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JavaScript

//! annyang
//! version : 2.6.0
//! author : Tal Ater @TalAter
//! license : MIT
//! https://www.TalAter.com/annyang/
(function (root, factory) {
"use strict";
if (typeof define === 'function' && define.amd) { // AMD + global
define([], function () {
return (root.annyang = factory(root));
});
} else if (typeof module === 'object' && module.exports) { // CommonJS
module.exports = factory(root);
} else { // Browser globals
root.annyang = factory(root);
}
}(typeof window !== 'undefined' ? window : this, function (root, undefined) {
"use strict";
/**
* # Quick Tutorial, Intro and Demos
*
* The quickest way to get started is to visit the [annyang homepage](https://www.talater.com/annyang/).
*
* For a more in-depth look at annyang, read on.
*
* # API Reference
*/
var annyang;
// Get the SpeechRecognition object, while handling browser prefixes
var SpeechRecognition = root.SpeechRecognition ||
root.webkitSpeechRecognition ||
root.mozSpeechRecognition ||
root.msSpeechRecognition ||
root.oSpeechRecognition;
// Check browser support
// This is done as early as possible, to make it as fast as possible for unsupported browsers
if (!SpeechRecognition) {
return null;
}
var commandsList = [];
var recognition;
var callbacks = { start: [], error: [], end: [], soundstart: [], result: [], resultMatch: [], resultNoMatch: [], errorNetwork: [], errorPermissionBlocked: [], errorPermissionDenied: [] };
var autoRestart;
var lastStartedAt = 0;
var autoRestartCount = 0;
var debugState = false;
var debugStyle = 'font-weight: bold; color: #00f;';
var pauseListening = false;
var isListening = false;
// The command matching code is a modified version of Backbone.Router by Jeremy Ashkenas, under the MIT license.
var optionalParam = /\s*\((.*?)\)\s*/g;
var optionalRegex = /(\(\?:[^)]+\))\?/g;
var namedParam = /(\(\?)?:\w+/g;
var splatParam = /\*\w+/g;
var escapeRegExp = /[\-{}\[\]+?.,\\\^$|#]/g;
var commandToRegExp = function(command) {
command = command.replace(escapeRegExp, '\\$&')
.replace(optionalParam, '(?:$1)?')
.replace(namedParam, function(match, optional) {
return optional ? match : '([^\\s]+)';
})
.replace(splatParam, '(.*?)')
.replace(optionalRegex, '\\s*$1?\\s*');
return new RegExp('^' + command + '$', 'i');
};
// This method receives an array of callbacks to iterate over, and invokes each of them
var invokeCallbacks = function(callbacks, ...args) {
callbacks.forEach(function(callback) {
callback.callback.apply(callback.context, args);
});
};
var isInitialized = function() {
return recognition !== undefined;
};
// method for logging in developer console when debug mode is on
var logMessage = function(text, extraParameters) {
if (text.indexOf('%c') === -1 && !extraParameters) {
console.log(text);
} else {
console.log(text, extraParameters || debugStyle);
}
};
var initIfNeeded = function() {
if (!isInitialized()) {
annyang.init({}, false);
}
};
var registerCommand = function(command, callback, originalPhrase) {
commandsList.push({ command, callback, originalPhrase });
if (debugState) {
logMessage('Command successfully loaded: %c'+originalPhrase, debugStyle);
}
};
var parseResults = function(results) {
invokeCallbacks(callbacks.result, results);
var commandText;
// go over each of the 5 results and alternative results received (we've set maxAlternatives to 5 above)
for (let i = 0; i<results.length; i++) {
// the text recognized
commandText = results[i].trim();
if (debugState) {
logMessage('Speech recognized: %c'+commandText, debugStyle);
}
// try and match recognized text to one of the commands on the list
for (let j = 0, l = commandsList.length; j < l; j++) {
var currentCommand = commandsList[j];
var result = currentCommand.command.exec(commandText);
if (result) {
var parameters = result.slice(1);
if (debugState) {
logMessage('command matched: %c'+currentCommand.originalPhrase, debugStyle);
if (parameters.length) {
logMessage('with parameters', parameters);
}
}
// execute the matched command
currentCommand.callback.apply(this, parameters);
invokeCallbacks(callbacks.resultMatch, commandText, currentCommand.originalPhrase, results);
return;
}
}
}
invokeCallbacks(callbacks.resultNoMatch, results);
};
annyang = {
/**
* Initialize annyang with a list of commands to recognize.
*
* #### Examples:
* ````javascript
* var commands = {'hello :name': helloFunction};
* var commands2 = {'hi': helloFunction};
*
* // initialize annyang, overwriting any previously added commands
* annyang.init(commands, true);
* // adds an additional command without removing the previous commands
* annyang.init(commands2, false);
* ````
* As of v1.1.0 it is no longer required to call init(). Just start() listening whenever you want, and addCommands() whenever, and as often as you like.
*
* @param {Object} commands - Commands that annyang should listen to
* @param {boolean} [resetCommands=true] - Remove all commands before initializing?
* @method init
* @deprecated
* @see [Commands Object](#commands-object)
*/
init: function(commands, resetCommands = true) {
// Abort previous instances of recognition already running
if (recognition && recognition.abort) {
recognition.abort();
}
// initiate SpeechRecognition
recognition = new SpeechRecognition();
// Set the max number of alternative transcripts to try and match with a command
recognition.maxAlternatives = 5;
// In HTTPS, turn off continuous mode for faster results.
// In HTTP, turn on continuous mode for much slower results, but no repeating security notices
recognition.continuous = root.location.protocol === 'http:';
// Sets the language to the default 'en-US'. This can be changed with annyang.setLanguage()
recognition.lang = 'en-US';
recognition.onstart = function() {
isListening = true;
invokeCallbacks(callbacks.start);
};
recognition.onsoundstart = function() {
invokeCallbacks(callbacks.soundstart);
};
recognition.onerror = function(event) {
invokeCallbacks(callbacks.error, event);
switch (event.error) {
case 'network':
invokeCallbacks(callbacks.errorNetwork, event);
break;
case 'not-allowed':
case 'service-not-allowed':
// if permission to use the mic is denied, turn off auto-restart
autoRestart = false;
// determine if permission was denied by user or automatically.
if (new Date().getTime()-lastStartedAt < 200) {
invokeCallbacks(callbacks.errorPermissionBlocked, event);
} else {
invokeCallbacks(callbacks.errorPermissionDenied, event);
}
break;
}
};
recognition.onend = function() {
isListening = false;
invokeCallbacks(callbacks.end);
// annyang will auto restart if it is closed automatically and not by user action.
if (autoRestart) {
// play nicely with the browser, and never restart annyang automatically more than once per second
var timeSinceLastStart = new Date().getTime()-lastStartedAt;
autoRestartCount += 1;
if (autoRestartCount % 10 === 0) {
if (debugState) {
logMessage('Speech Recognition is repeatedly stopping and starting. See http://is.gd/annyang_restarts for tips.');
}
}
if (timeSinceLastStart < 1000) {
setTimeout(function() {
annyang.start({ paused: pauseListening });
}, 1000-timeSinceLastStart);
} else {
annyang.start({ paused: pauseListening });
}
}
};
recognition.onresult = function(event) {
if(pauseListening) {
if (debugState) {
logMessage('Speech heard, but annyang is paused');
}
return false;
}
// Map the results to an array
var SpeechRecognitionResult = event.results[event.resultIndex];
var results = [];
for (let k = 0; k<SpeechRecognitionResult.length; k++) {
results[k] = SpeechRecognitionResult[k].transcript;
}
parseResults(results);
};
// build commands list
if (resetCommands) {
commandsList = [];
}
if (commands.length) {
this.addCommands(commands);
}
},
/**
* Start listening.
* It's a good idea to call this after adding some commands first, but not mandatory.
*
* Receives an optional options object which supports the following options:
*
* - `autoRestart` (boolean, default: true) Should annyang restart itself if it is closed indirectly, because of silence or window conflicts?
* - `continuous` (boolean) Allow forcing continuous mode on or off. Annyang is pretty smart about this, so only set this if you know what you're doing.
* - `paused` (boolean, default: true) Start annyang in paused mode.
*
* #### Examples:
* ````javascript
* // Start listening, don't restart automatically
* annyang.start({ autoRestart: false });
* // Start listening, don't restart automatically, stop recognition after first phrase recognized
* annyang.start({ autoRestart: false, continuous: false });
* ````
* @param {Object} [options] - Optional options.
* @method start
*/
start: function(options) {
initIfNeeded();
options = options || {};
if (options.paused !== undefined) {
pauseListening = !!options.paused;
} else {
pauseListening = false;
}
if (options.autoRestart !== undefined) {
autoRestart = !!options.autoRestart;
} else {
autoRestart = true;
}
if (options.continuous !== undefined) {
recognition.continuous = !!options.continuous;
}
lastStartedAt = new Date().getTime();
try {
recognition.start();
} catch(e) {
if (debugState) {
logMessage(e.message);
}
}
},
/**
* Stop listening, and turn off mic.
*
* Alternatively, to only temporarily pause annyang responding to commands without stopping the SpeechRecognition engine or closing the mic, use pause() instead.
* @see [pause()](#pause)
*
* @method abort
*/
abort: function() {
autoRestart = false;
autoRestartCount = 0;
if (isInitialized()) {
recognition.abort();
}
},
/**
* Pause listening. annyang will stop responding to commands (until the resume or start methods are called), without turning off the browser's SpeechRecognition engine or the mic.
*
* Alternatively, to stop the SpeechRecognition engine and close the mic, use abort() instead.
* @see [abort()](#abort)
*
* @method pause
*/
pause: function() {
pauseListening = true;
},
/**
* Resumes listening and restores command callback execution when a result matches.
* If SpeechRecognition was aborted (stopped), start it.
*
* @method resume
*/
resume: function() {
annyang.start();
},
/**
* Turn on output of debug messages to the console. Ugly, but super-handy!
*
* @param {boolean} [newState=true] - Turn on/off debug messages
* @method debug
*/
debug: function(newState = true) {
debugState = !!newState;
},
/**
* Set the language the user will speak in. If this method is not called, defaults to 'en-US'.
*
* @param {String} language - The language (locale)
* @method setLanguage
* @see [Languages](https://github.com/TalAter/annyang/blob/master/docs/FAQ.md#what-languages-are-supported)
*/
setLanguage: function(language) {
initIfNeeded();
recognition.lang = language;
},
/**
* Add commands that annyang will respond to. Similar in syntax to init(), but doesn't remove existing commands.
*
* #### Examples:
* ````javascript
* var commands = {'hello :name': helloFunction, 'howdy': helloFunction};
* var commands2 = {'hi': helloFunction};
*
* annyang.addCommands(commands);
* annyang.addCommands(commands2);
* // annyang will now listen to all three commands
* ````
*
* @param {Object} commands - Commands that annyang should listen to
* @method addCommands
* @see [Commands Object](#commands-object)
*/
addCommands: function(commands) {
var cb;
initIfNeeded();
for (let phrase in commands) {
if (commands.hasOwnProperty(phrase)) {
cb = root[commands[phrase]] || commands[phrase];
if (typeof cb === 'function') {
// convert command to regex then register the command
registerCommand(commandToRegExp(phrase), cb, phrase);
} else if (typeof cb === 'object' && cb.regexp instanceof RegExp) {
// register the command
registerCommand(new RegExp(cb.regexp.source, 'i'), cb.callback, phrase);
} else {
if (debugState) {
logMessage('Can not register command: %c'+phrase, debugStyle);
}
continue;
}
}
}
},
/**
* Remove existing commands. Called with a single phrase, array of phrases, or methodically. Pass no params to remove all commands.
*
* #### Examples:
* ````javascript
* var commands = {'hello': helloFunction, 'howdy': helloFunction, 'hi': helloFunction};
*
* // Remove all existing commands
* annyang.removeCommands();
*
* // Add some commands
* annyang.addCommands(commands);
*
* // Don't respond to hello
* annyang.removeCommands('hello');
*
* // Don't respond to howdy or hi
* annyang.removeCommands(['howdy', 'hi']);
* ````
* @param {String|Array|Undefined} [commandsToRemove] - Commands to remove
* @method removeCommands
*/
removeCommands: function(commandsToRemove) {
if (commandsToRemove === undefined) {
commandsList = [];
} else {
commandsToRemove = Array.isArray(commandsToRemove) ? commandsToRemove : [commandsToRemove];
commandsList = commandsList.filter(command => {
for (let i = 0; i<commandsToRemove.length; i++) {
if (commandsToRemove[i] === command.originalPhrase) {
return false;
}
}
return true;
});
}
},
/**
* Add a callback function to be called in case one of the following events happens:
*
* * `start` - Fired as soon as the browser's Speech Recognition engine starts listening
* * `soundstart` - Fired as soon as any sound (possibly speech) has been detected.
* This will fire once per Speech Recognition starting. See https://is.gd/annyang_sound_start
* * `error` - Fired when the browser's Speech Recogntion engine returns an error, this generic error callback will be followed by more accurate error callbacks (both will fire if both are defined)
* Callback function will be called with the error event as the first argument
* * `errorNetwork` - Fired when Speech Recognition fails because of a network error
* Callback function will be called with the error event as the first argument
* * `errorPermissionBlocked` - Fired when the browser blocks the permission request to use Speech Recognition.
* Callback function will be called with the error event as the first argument
* * `errorPermissionDenied` - Fired when the user blocks the permission request to use Speech Recognition.
* Callback function will be called with the error event as the first argument
* * `end` - Fired when the browser's Speech Recognition engine stops
* * `result` - Fired as soon as some speech was identified. This generic callback will be followed by either the `resultMatch` or `resultNoMatch` callbacks.
* Callback functions for to this event will be called with an array of possible phrases the user said as the first argument
* * `resultMatch` - Fired when annyang was able to match between what the user said and a registered command
* Callback functions for this event will be called with three arguments in the following order:
* * The phrase the user said that matched a command
* * The command that was matched
* * An array of possible alternative phrases the user might have said
* * `resultNoMatch` - Fired when what the user said didn't match any of the registered commands.
* Callback functions for this event will be called with an array of possible phrases the user might've said as the first argument
*
* #### Examples:
* ````javascript
* annyang.addCallback('error', function() {
* $('.myErrorText').text('There was an error!');
* });
*
* annyang.addCallback('resultMatch', function(userSaid, commandText, phrases) {
* console.log(userSaid); // sample output: 'hello'
* console.log(commandText); // sample output: 'hello (there)'
* console.log(phrases); // sample output: ['hello', 'halo', 'yellow', 'polo', 'hello kitty']
* });
*
* // pass local context to a global function called notConnected
* annyang.addCallback('errorNetwork', notConnected, this);
* ````
* @param {String} type - Name of event that will trigger this callback
* @param {Function} callback - The function to call when event is triggered
* @param {Object} [context] - Optional context for the callback function
* @method addCallback
*/
addCallback: function(type, callback, context) {
var cb = root[callback] || callback;
if (typeof cb === 'function' && callbacks[type] !== undefined) {
callbacks[type].push({callback: cb, context: context || this});
}
},
/**
* Remove callbacks from events.
*
* - Pass an event name and a callback command to remove that callback command from that event type.
* - Pass just an event name to remove all callback commands from that event type.
* - Pass undefined as event name and a callback command to remove that callback command from all event types.
* - Pass no params to remove all callback commands from all event types.
*
* #### Examples:
* ````javascript
* annyang.addCallback('start', myFunction1);
* annyang.addCallback('start', myFunction2);
* annyang.addCallback('end', myFunction1);
* annyang.addCallback('end', myFunction2);
*
* // Remove all callbacks from all events:
* annyang.removeCallback();
*
* // Remove all callbacks attached to end event:
* annyang.removeCallback('end');
*
* // Remove myFunction2 from being called on start:
* annyang.removeCallback('start', myFunction2);
*
* // Remove myFunction1 from being called on all events:
* annyang.removeCallback(undefined, myFunction1);
* ````
*
* @param type Name of event type to remove callback from
* @param callback The callback function to remove
* @returns undefined
* @method removeCallback
*/
removeCallback: function(type, callback) {
var compareWithCallbackParameter = function(cb) {
return cb.callback !== callback;
};
// Go over each callback type in callbacks store object
for (let callbackType in callbacks) {
if (callbacks.hasOwnProperty(callbackType)) {
// if this is the type user asked to delete, or he asked to delete all, go ahead.
if (type === undefined || type === callbackType) {
// If user asked to delete all callbacks in this type or all types
if (callback === undefined) {
callbacks[callbackType] = [];
} else {
// Remove all matching callbacks
callbacks[callbackType] = callbacks[callbackType].filter(compareWithCallbackParameter);
}
}
}
}
},
/**
* Returns true if speech recognition is currently on.
* Returns false if speech recognition is off or annyang is paused.
*
* @return boolean true = SpeechRecognition is on and annyang is listening
* @method isListening
*/
isListening: function() {
return isListening && !pauseListening;
},
/**
* Returns the instance of the browser's SpeechRecognition object used by annyang.
* Useful in case you want direct access to the browser's Speech Recognition engine.
*
* @returns SpeechRecognition The browser's Speech Recognizer currently used by annyang
* @method getSpeechRecognizer
*/
getSpeechRecognizer: function() {
return recognition;
},
/**
* Simulate speech being recognized. This will trigger the same events and behavior as when the Speech Recognition
* detects speech.
*
* Can accept either a string containing a single sentence, or an array containing multiple sentences to be checked
* in order until one of them matches a command (similar to the way Speech Recognition Alternatives are parsed)
*
* #### Examples:
* ````javascript
* annyang.trigger('Time for some thrilling heroics');
* annyang.trigger(
* ['Time for some thrilling heroics', 'Time for some thrilling aerobics']
* );
* ````
*
* @param string|array sentences A sentence as a string or an array of strings of possible sentences
* @returns undefined
* @method trigger
*/
trigger: function(sentences) {
if(!annyang.isListening()) {
if (debugState) {
if (!isListening) {
logMessage('Cannot trigger while annyang is aborted');
} else {
logMessage('Speech heard, but annyang is paused');
}
}
return;
}
if (!Array.isArray(sentences)) {
sentences = [sentences];
}
parseResults(sentences);
}
};
return annyang;
}));
/**
* # Good to Know
*
* ## Commands Object
*
* Both the [init()]() and addCommands() methods receive a `commands` object.
*
* annyang understands commands with `named variables`, `splats`, and `optional words`.
*
* * Use `named variables` for one word arguments in your command.
* * Use `splats` to capture multi-word text at the end of your command (greedy).
* * Use `optional words` or phrases to define a part of the command as optional.
*
* #### Examples:
* ````html
* <script>
* var commands = {
* // annyang will capture anything after a splat (*) and pass it to the function.
* // e.g. saying "Show me Batman and Robin" will call showFlickr('Batman and Robin');
* 'show me *tag': showFlickr,
*
* // A named variable is a one word variable, that can fit anywhere in your command.
* // e.g. saying "calculate October stats" will call calculateStats('October');
* 'calculate :month stats': calculateStats,
*
* // By defining a part of the following command as optional, annyang will respond
* // to both: "say hello to my little friend" as well as "say hello friend"
* 'say hello (to my little) friend': greeting
* };
*
* var showFlickr = function(tag) {
* var url = 'http://api.flickr.com/services/rest/?tags='+tag;
* $.getJSON(url);
* }
*
* var calculateStats = function(month) {
* $('#stats').text('Statistics for '+month);
* }
*
* var greeting = function() {
* $('#greeting').text('Hello!');
* }
* </script>
* ````
*
* ### Using Regular Expressions in commands
* For advanced commands, you can pass a regular expression object, instead of
* a simple string command.
*
* This is done by passing an object containing two properties: `regexp`, and
* `callback` instead of the function.
*
* #### Examples:
* ````javascript
* var calculateFunction = function(month) { console.log(month); }
* var commands = {
* // This example will accept any word as the "month"
* 'calculate :month stats': calculateFunction,
* // This example will only accept months which are at the start of a quarter
* 'calculate :quarter stats': {'regexp': /^calculate (January|April|July|October) stats$/, 'callback': calculateFunction}
* }
````
*
*/