java-visualizations/ClassMaker.html at master · grahammitchell/java-visualizations · GitHub

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<!DOCTYPE html>
<html>
<head>
	<meta charset="UTF-8">
	<title>Class Maker</title>
	<style type='text/css'>
		pre.snippet {
			font: 20pt Consolas, Courier New, monospace;
			margin-left: 20px;
		}
	</style>
</head>
<body>
<pre class=snippet>
<span id=instantiation>Foo f = new Foo( 12, 3.4 );</span>
<span id=methodcalls>int x = f.getFirst();</span>
</pre>
<hr>

<p><button id=togglebutton type='button' onclick="toggle('solution'); return false;">Hide Solution</button>
<button type='button' onclick="redo(); return false;">Redo</button>
</p>

<pre class=snippet id=solution>
public class <span id=classname1>Foo</span> {
<span id=fields>    private int first;
    private double second;
</span>
<span id=constructor>    public Foo( int first, double second ) {
        this.first = first;
        this.second = second;
    }</span>

<span id=getter>    public int getFirst() {
        return first;
    }

    public double getSecond() {
        return second;
    }</span>
}
</pre>
	<script type='text/javascript'>
		"use strict";
		var computed = false;
		var hideInitially = false;
		var nouns = [
			"foo", "bar", "baz", "qux", "quux", "quuz", "corge", "grault",
			"garply", "waldo", "fred", "plugh", "xyzzy", "thud", "qwerty",

			"alfa", "bravo", "charlie", "delta", "echo", "foxtrot", "golf",
			"hotel", "india", "juliett", "kilo", "lima", "mike", "november",
			"oscar", "papa", "quebec", "romeo", "sierra", "tango", "uniform",
			"victor", "whiskey", "xray", "yankee", "zulu",

			"cat", "dog", "bunny", "rabbit", "pig", "horse", "goat", "sheep",
			"cow", "chicken", "turkey", "squirrel", "snake", "bear", "tiger",
			"lion", "wolf", "deer", "duck", "swan", "reindeer", "mouse",

			"ford", "chevy", "toyota", "honda", "cadillac", "lexus", "kia",
			"jeep", "acura", "audi", "bentley", "bmw", "chrysler", "dodge",
			"gmc", "hyundai", "infiniti", "jaguar", "lincoln", "mazda",
			"mercedes", "mitsubishi", "nissan", "scion", "subaru", "tesla",
			"volkswagen", "volvo",

			"book", "pencil", "paper", "stapler", "holepunch", "notebook",
			"folder", "locker", "sharpener", "pen", "eraser", "compass",

			"rectangle", "square", "line", "triangle", "circle", "oval",
			"rhombus", "pentagon", "hexagon", "octagon", "cube", "sphere",
			"pyramid", "cylinder", "parabola", "hyperbola",

			"simile", "metaphor", "hyperbole", "alliteration", "personification",
			"onomatopoeia", "idiom", "allegory", "cliche", "syndcdoche",

			// "", "", "", "", "", "", "", "", "",
		];

		var fields = {
			"int": [
				"legs", "teeth", "sides", "angles", "hats", "gallons",
				"powerlevel", "wings", "doors", "horns", "lazers", "quantity",
				"levers", "positions", "months", "years", "kills", "gears",
				"quarts", "ounces", "pounds", "kilograms", "meters", "inches",
				"seats", "weapons", "tires", "pages", "points", "ports",
			],
			"double": [
				"gallons", "powerlevel", "positions", "months", "years",
				"quarts", "ounces", "pounds", "kilograms", "meters", "inches",
				"health", "shield", "fuel", "rating", "percentage", "money",
				"dollars", "euro", "bitcoin", "taxrate", "margin", "price",
				"weight",
			],
			"String": [
				"name", "manufacturer", "firstname", "lastname", "middlename",
				"brand", "nickname", "state", "country", "licenseplate", "slogan",
				"superpower", "allegiance", "team", "city", "creator", "enemy",
				"nemesis", "weakness", "model", "condition", "location", "upc",
				"color", "material", "date", "time",
			],
			"boolean": [
				"hairy", "broken", "working", "functional", "used", "new",
				"sleepy", "burning", "weekend", "smiling", "awake", "employed",
				"sober", "vacation", "tired", "clean", "messy", "colinear",
				"correct", "lying", "president", "retired", "rich", "citizen",
			],
		};


		var types = [
			"boolean", "String", "String", "int", "int", "int", "double", "double", "double",
		];

		var idGroups = [
			[ "a", "b", "c" ],
			[ "x", "y", "z" ],
			[ "one", "two", "three" ],
			[ "first", "second", "third" ],
			[ "uno", "dos", "tres" ],
			[ "eins", "zwei", "trei" ],
			[ "un", "deux", "trois" ],
			[ "unus", "duo", "tres" ],
			[ "apple", "banana", "fig" ],
		];

		var verbs = [
			"process", "fabricate", "frobnicate", "frob", "wheedle", "cajole",
			"fight", "throw", "zip", "stitch", "flatter", "beguile", "influence",
			"inveigle", "formulate", "mix", "compose", "concoct", "prevaricate",
			"tweak", "adjust", "modify", "regulate", "rework", "chomp",
			"transmogrify", "transmute",
		];

		var paramChances = [ 1, 1, 1, 2, 2, 2, 2, 2, 3, 3 ];

		function update() {
			if ( computed )
				return;

			computed = true;

			var classname = choose(nouns);
			classname = capitalize(classname);
			document.getElementById('classname1').textContent = classname;
			var objname = lowerFirst(classname);
			objname = objname + objname;

			var numParams = choose(paramChances);
			var idList = choose(idGroups);
			var useInitials = Math.random() < 0.2;

			// choose fields / parameters
			var paramList = [];
			for ( var i=0; i<numParams; i++ ) {
				var item = {};
				item.type = choose(types);
				item.id = useInitials ? lowerFirst(item.type) : idList[i];

				if ( item.type === "boolean" ) {
					item.value = ( Math.random() < 0.5 ) ? "true" : "false";
				}
				else if ( item.type === "int" ) {
					item.value = irandom(0, 20);
				}
				else if ( item.type === "double" ) {
					item.value = frandom(0, 20);
				}
				else if ( item.type === "String" ) {
					item.value = '"' + choose(nouns) + '"';
				}
				paramList.push(item);
			}
			// console.log(JSON.stringify(paramList));

			var constructorParamList = extractFieldToArr('value', paramList).join(", ");
			var instantiation = classname + " " + objname + " = new " + classname + "( " + constructorParamList + " );";
			document.getElementById('instantiation').textContent = instantiation;

			// fields
			var fieldDecl = "";
			for ( var i=0; i<numParams; i++ ) {
				fieldDecl += "    private " + paramList[i].type + " " + paramList[i].id + ";\n";
			}
			document.getElementById('fields').textContent = fieldDecl;

			// constructor implementation
			var constructorImpl = "    public " + classname + "( ";
			for ( var i=0; i<numParams-1; i++ ) {
				constructorImpl += paramList[i].type + " " + paramList[i].id + ", ";
			}
			constructorImpl += paramList[numParams-1].type + " " + paramList[numParams-1].id + ") {\n";
			for ( var i=0; i<numParams; i++ ) {
				constructorImpl += "        this." + paramList[i].id + " = " + paramList[i].id + ";\n";
			}
			constructorImpl += "    }";
			document.getElementById('constructor').textContent = constructorImpl;

			// single getter
			var thingy = choose(paramList);
			var methodcall = thingy.type + " x = " + objname + ".get" + capitalize(thingy.id) + "();"
			document.getElementById('methodcalls').textContent = methodcall;

			var methodImpl = "    public " + thingy.type + " get" + capitalize(thingy.id) + "() {\n";
			methodImpl += "        return " + thingy.id + ";\n    }";
			document.getElementById('getter').textContent = methodImpl;
		}

		function s2i( s ) {
			var n = 0;
			if ( s.length > 0 ) {
				var test = parseInt(s, 10);
				if ( ! isNaN(test) )
					n = test;
			}
			return n;
		}

		function choose( arr ) {
			return arr[Math.floor(Math.random()*arr.length)];
		}

		function capitalize( str ) {
			return str.charAt(0).toUpperCase() + str.substring(1);
		}

		function lowerFirst( str ) {
			return str.charAt(0).toLowerCase();
		}

		function irandom( min, max ) {
			return Math.floor(Math.random()*(max-min+1)) + min;
		}

		function frandom( min, max ) {
			min = 10*min;
			max = 10*max;
			var val = Math.floor(Math.random()*(max-min+1)) + min;
			return val / 10.0;
		}

		function extractFieldToArr( field, arr ) {
			var arr2 = [];
			for ( var i=0; i<arr.length; i++ ) {
				arr2.push( arr[i][field] );
			}
			return arr2;
		}

		function redo() {
			computed = false;
		}

		function toggle( id ) {
			var elm = document.getElementById(id);
			var button = document.getElementById('togglebutton');
			if ( elm.style.display == 'none' ) {
				elm.style.display = 'block';
				button.textContent = 'Hide Solution';
			}
			else {
				elm.style.display = 'none';
				button.textContent = 'Show Solution';
			}
		}

		function main() {
			if ( hideInitially == true ) {
				toggle('solution');
			}
			setInterval(function() { update(); }, 1000/60);
		}

		main();
	</script>
</body>
</html>