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morsetutor.js
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morsetutor.js
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var morseTutorUi = function() {
/**
* Stop sending any currently playing sequence
*/
const stop = function() {
morseSender.stopSending();
}
const updateFrequency = function(toneInput) {
document.getElementById("frequencyRange").value = toneInput;
document.getElementById("frequencyNum").value = toneInput;
tone.frequency = toneInput;
}
const updateVolume = function(volumeInput) {
document.getElementById("volumeRange").value = volumeInput;
document.getElementById("volumeNum").value = volumeInput;
tone.volume = volumeInput;
}
const updateSendSpeed = function(sendSpeedInput) {
document.getElementById("sendSpeedRange").value = sendSpeedInput;
document.getElementById("sendSpeedNum").value = sendSpeedInput;
sendOptions.speed = sendSpeedInput;
}
const updateGroupSize = function(sendGroupInput) {
sendOptions.groupSize = sendGroupInput;
}
const updateGroupCount = function(sendGroupCountInput) {
sendOptions.groupCount = sendGroupCountInput;
}
const tone = {
frequency : 440,
volume : 15,
frequencyMin : 250,
frequencyMax : 2000,
maxVolume : 100,
minVolume : 0,
}
const sendOptions = {
speed : 15,
maxSendSpeed : 40,
minSendSpeed : 5,
groupSize: 3,
minGroupSize: 1,
maxGroupSize: 20,
groupCount: 1,
minGroupCount: 1,
maxGroupCount: 20,
}
function Letter(display, morse) {
this.display = display;
this.morse = morse;
this.enabled = false;
}
Letter.prototype.getInnerHtml = function() {
let listTag = document.createElement("li");
listTag.innerHTML = this.display;
let inputTag = document.createElement("input");
inputTag.setAttribute('type','checkbox');
inputTag.addEventListener('click',this.toggle.bind(this));
listTag.appendChild(inputTag);
return listTag;
};
Letter.prototype.toggle = function() {
this.enabled = !this.enabled;
if (this.enabled) {
enabledAlphabet.push(this);
} else {
let idx = enabledAlphabet.indexOf(this);
enabledAlphabet.splice(idx, 1);
}
};
const alphabet = [
new Letter("a",".-"),
new Letter("b","-..."),
new Letter("c","-.-."),
new Letter("d","-.."),
new Letter("e","."),
new Letter("f","..-."),
new Letter("g","--."),
new Letter("h","...."),
new Letter("i",".."),
new Letter("j",".---"),
new Letter("k","-.-"),
new Letter("l",".-.."),
new Letter("m","--"),
new Letter("n","-."),
new Letter("o","---"),
new Letter("p",".--."),
new Letter("q","--.-"),
new Letter("r",".-."),
new Letter("s","..."),
new Letter("t","-"),
new Letter("u","..-"),
new Letter("v","...-"),
new Letter("w",".--"),
new Letter("x","-..-"),
new Letter("y","-.--"),
new Letter("z","--.."),
new Letter("0","-----"),
new Letter("1",".----"),
new Letter("2","..---"),
new Letter("3","...--"),
new Letter("4","....-"),
new Letter("5","....."),
new Letter("6","-...."),
new Letter("7","--..."),
new Letter("8","---.."),
new Letter("9","----.")
];
const enabledAlphabet = [];
var currentSequence = [];
/**
* Get a single random Letter object from the enabled alphabet.
*/
function getRandomLetter() {
if (enabledAlphabet.length > 0) {
let rand = Math.random();
let scaledRand = rand * enabledAlphabet.length;
let idx = Math.floor(scaledRand);
return enabledAlphabet[idx];
} else {
return null;
}
}
/**
* Randomly generate a two dimensional array of Letters. Each
* element in the outer array represents a word, each element
* in the inner array is a Letter.
*/
function generateRandomSequence() {
var sequence = [];
for(let i = 0; i < sendOptions.groupCount; i++) {
sequence[i] = [];
for (let j = 0; j < sendOptions.groupSize; j++) {
sequence[i][j] = getRandomLetter();
}
}
return sequence;
}
/**
* Generate and send a sequence of characters in the form of a morse
* encoded string. Replaces the stored currentSequence with the newly
* generated random sequence.
*/
function sendRandomSequence() {
currentSequence = [];
if (enabledAlphabet.length > 0) {
currentSequence = generateRandomSequence();
document.getElementById("sequenceShow").innerText = "";
let morseSequence = generateMorseString(currentSequence);
morseSender.sendSequence(morseSequence, sendOptions, tone);
} else {
alert("No letters selected");
}
}
/**
* Resends the previous sequence.
*/
function resendSequence() {
let morseSequence = generateMorseString(currentSequence);
morseSender.sendSequence(morseSequence, sendOptions, tone);
}
/**
* Displays the last sent sequence. Handy for users
* to check their answers.
*/
function showLastSequence() {
let displaySequence = generateDisplayString(currentSequence);
document.getElementById("sequenceShow").innerText = displaySequence;
}
/**
* Turns an array of arrays of letters into a string of morse
* code with each word seperated by a "/".
*/
function generateMorseString(sequences) {
let result = "";
for (let i = 0; i < sequences.length; i++) {
for (let j = 0; j < sequences[i].length; j++) {
let letter = sequences[i][j];
result = result.concat(letter.morse);
result = result.concat(" ");
}
result = result.concat("/");
}
return result;
}
function generateDisplayString(sequences) {
let result = "";
for (let i = 0; i < sequences.length; i++) {
for (let j = 0; j < sequences[i].length; j++) {
let letter = sequences[i][j];
result = result.concat(letter.display);
}
result = result.concat(" ");
}
return result;
}
function init() {
document.getElementById("frequencyRange").min = tone.frequencyMin;
document.getElementById("frequencyNum").min = tone.frequencyMin;
document.getElementById("frequencyRange").max = tone.frequencyMax;
document.getElementById("frequencyNum").max = tone.frequencyMax;
document.getElementById("volumeRange").max = tone.maxVolume;
document.getElementById("volumeNum").min = tone.minVolume;
document.getElementById("volumeRange").max = tone.maxVolume;
document.getElementById("volumeNum").min = tone.minVolume;
document.getElementById("sendSpeedRange").min = sendOptions.minSendSpeed;
document.getElementById("sendSpeedRange").max = sendOptions.maxSendSpeed;
document.getElementById("sendSpeedNum").min = sendOptions.minSendSpeed;
document.getElementById("sendSpeedNum").max = sendOptions.maxSendSpeed;
document.getElementById("sendGroupSize").min = sendOptions.minGroupSize;
document.getElementById("sendGroupSize").max = sendOptions.maxGroupSize;
document.getElementById("sendGroupSize").value = sendOptions.groupSize;
document.getElementById("sendGroupsCount").min = sendOptions.minGroupCount;
document.getElementById("sendGroupsCount").max = sendOptions.maxGroupCount;
document.getElementById("sendGroupsCount").value = sendOptions.groupCount;
let alphabetFieldset = document.getElementById("alphabet");
alphabet.forEach(function(letter) {
console.log(letter);
alphabetFieldset.appendChild(letter.getInnerHtml());
});
//Default values
updateFrequency(440);
updateVolume(50);
updateSendSpeed(15);
}
return {
init:init,
updateFrequency:updateFrequency,
updateVolume:updateVolume,
updateSendSpeed:updateSendSpeed,
updateGroupSize:updateGroupSize,
updateGroupCount:updateGroupCount,
sendRandomSequence,
resendSequence,
stop,
enabledAlphabet:enabledAlphabet,
currentSequence,
showLastSequence,
}
}();
morseTutorUi.init();