Babylon.js/Playground/js/index.js

examples = new Examples();
utils = new Utils();
monacoCreator = new MonacoCreator();
settingsPG = new SettingsPG(monacoCreator);
menuPG = new MenuPG();
zipTool = new zipTool();

/**
 * View split
 */
var splitInstance = Split(['#jsEditor', '#canvasZone']);


var run = function () {

    var snippetV3Url = "https://snippet.babylonjs.com"
    var currentSnippetToken;
    var currentSnippetTitle = null;
    var currentSnippetDescription = null;
    var currentSnippetTags = null;
    var engine;
    var fpsLabel = document.getElementById("fpsLabel");
    var scripts;
    BABYLON.Engine.ShadersRepository = "/src/Shaders/";

    window.addEventListener("resize",
        function () {
            if (engine) {
                engine.resize();
            }
        }
    );

    // TO DO : Rewrite this with unpkg.com
    if (location.href.indexOf("indexStable") !== -1) {
        utils.setToMultipleID("currentVersion", "innerHTML", "v.3.0");
    } else {
        utils.setToMultipleID("currentVersion", "innerHTML", "v.4.0");
    }

    var checkTypescriptSupport = function (xhr) {
        // If we're loading TS content and it's JS page
        if (xhr.responseText.indexOf("class Playground") !== -1) {
            if (settingsPG.ScriptLanguage == "JS") {
                settingsPG.ScriptLanguage = "TS";
                location.reload();
                return false;
            }
        } else { // If we're loading JS content and it's TS page
            if (settingsPG.ScriptLanguage == "TS") {
                settingsPG.ScriptLanguage = "JS";
                location.reload();
                return false;
            }
        }
        return true;
    };

    var loadScript = function (scriptURL, title) {
        var xhr = new XMLHttpRequest();

        xhr.open('GET', scriptURL, true);

        xhr.onreadystatechange = function () {
            if (xhr.readyState === 4) {
                if (xhr.status === 200) {

                    if (!checkTypescriptSupport(xhr)) return;

                    xhr.onreadystatechange = null;
                    monacoCreator.BlockEditorChange = true;
                    monacoCreator.JsEditor.setValue(xhr.responseText);
                    monacoCreator.JsEditor.setPosition({ lineNumber: 0, column: 0 });
                    monacoCreator.BlockEditorChange = false;
                    compileAndRun();

                    currentSnippetToken = null;
                }
            }
        };

        xhr.send(null);
    };

    var loadScriptsList = function () {

        var exampleList = document.getElementById("exampleList");

        var xhr = new XMLHttpRequest();
        //Open Typescript or Javascript examples
        // TO DO - Check why it's always javascript ? Is it hard coded in html page ?
        // Should we merge both lists ?
        if (exampleList.className != 'typescript') {
            xhr.open('GET', 'https://raw.githubusercontent.com/BabylonJS/Documentation/master/examples/list.json', true);
        }
        else {
            xhr.open('GET', 'https://raw.githubusercontent.com/BabylonJS/Documentation/master/examples/list_ts.json', true);
        }

        xhr.onreadystatechange = function () {
            if (xhr.readyState === 4) {
                if (xhr.status === 200) {
                    scripts = JSON.parse(xhr.response)["examples"];

                    function sortScriptsList(a, b) {
                        if (a.title < b.title) return -1;
                        else return 1;
                    }
                    scripts.sort(sortScriptsList);

                    if (exampleList) {
                        for (var i = 0; i < scripts.length; i++) {
                            scripts[i].samples.sort(sortScriptsList);

                            var exampleCategory = document.createElement("div");
                            exampleCategory.classList.add("categoryContainer");

                            var exampleCategoryTitle = document.createElement("p");
                            exampleCategoryTitle.innerText = scripts[i].title;
                            exampleCategory.appendChild(exampleCategoryTitle);

                            for (var ii = 0; ii < scripts[i].samples.length; ii++) {
                                var example = document.createElement("div");
                                example.classList.add("itemLine");
                                example.id = ii;

                                var exampleImg = document.createElement("img");
                                exampleImg.src = scripts[i].samples[ii].icon.replace("icons", "https://doc.babylonjs.com/examples/icons");
                                exampleImg.setAttribute("onClick", "document.getElementById('PGLink_" + scripts[i].samples[ii].PGID + "').click();");

                                var exampleContent = document.createElement("div");
                                exampleContent.classList.add("itemContent");
                                exampleContent.setAttribute("onClick", "document.getElementById('PGLink_" + scripts[i].samples[ii].PGID + "').click();");

                                var exampleContentLink = document.createElement("div");
                                exampleContentLink.classList.add("itemContentLink");

                                var exampleTitle = document.createElement("h3");
                                exampleTitle.classList.add("exampleCategoryTitle");
                                exampleTitle.innerText = scripts[i].samples[ii].title;
                                var exampleDescr = document.createElement("div");
                                exampleDescr.classList.add("itemLineChild");
                                exampleDescr.innerText = scripts[i].samples[ii].description;

                                var exampleDocLink = document.createElement("a");
                                exampleDocLink.classList.add("itemLineDocLink");
                                exampleDocLink.innerText = "Documentation";
                                exampleDocLink.href = scripts[i].samples[ii].doc;
                                exampleDocLink.target = "_blank";

                                var examplePGLink = document.createElement("a");
                                examplePGLink.id = "PGLink_" + scripts[i].samples[ii].PGID;
                                examplePGLink.classList.add("itemLinePGLink");
                                examplePGLink.innerText = "Display";
                                examplePGLink.href = scripts[i].samples[ii].PGID;

                                exampleContentLink.appendChild(exampleTitle);
                                exampleContentLink.appendChild(exampleDescr);
                                exampleContent.appendChild(exampleContentLink);
                                exampleContent.appendChild(exampleDocLink);
                                exampleContent.appendChild(examplePGLink);

                                example.appendChild(exampleImg);
                                example.appendChild(exampleContent);

                                exampleCategory.appendChild(example);
                            }

                            exampleList.appendChild(exampleCategory);
                        }

                        var noResultContainer = document.createElement("div");
                        noResultContainer.id = "noResultsContainer";
                        noResultContainer.classList.add("categoryContainer");
                        noResultContainer.style.display = "none";
                        noResultContainer.innerHTML = "<p id='noResults'>No results found.</p>";
                        exampleList.appendChild(noResultContainer);
                    }

                    if (!location.hash) {
                        // Query string
                        var queryString = window.location.search;

                        if (queryString) {
                            var query = queryString.replace("?", "");
                            index = parseInt(query);
                            if (!isNaN(index)) {
                                // TO DO - Should we remove this deprecated code ?
                                var newPG = "";
                                switch (index) {
                                    case 1: newPG = "#TAZ2CB#0"; break; // Basic scene
                                    case 2: newPG = "#A1210C#0"; break; // Basic elements
                                    case 3: newPG = "#CURCZC#0"; break; // Rotation and scaling
                                    case 4: newPG = "#DXARSP#0"; break; // Materials
                                    case 5: newPG = "#1A3M5C#0"; break; // Cameras
                                    case 6: newPG = "#AQRDKW#0"; break; // Lights
                                    case 7: newPG = "#QYFDDP#1"; break; // Animations
                                    case 8: newPG = "#9RI8CG#0"; break; // Sprites
                                    case 9: newPG = "#U8MEB0#0"; break; // Collisions
                                    case 10: newPG = "#KQV9SA#0"; break; // Intersections
                                    case 11: newPG = "#NU4F6Y#0"; break; // Picking
                                    case 12: newPG = "#EF9X5R#0"; break; // Particles
                                    case 13: newPG = "#7G0IQW#0"; break; // Environment
                                    case 14: newPG = "#95PXRY#0"; break; // Height map
                                    case 15: newPG = "#IFYDRS#0"; break; // Shadows
                                    case 16: newPG = "#AQZJ4C#0"; break; // Import meshes
                                    case 17: newPG = "#J19GYK#0"; break; // Actions
                                    case 18: newPG = "#UZ23UH#0"; break; // Drag and drop
                                    case 19: newPG = "#AQZJ4C#0"; break; // Fresnel
                                    case 20: newPG = "#8ZNVGR#0"; break; // Easing functions
                                    case 21: newPG = "#B2ZXG6#0"; break; // Procedural texture
                                    case 22: newPG = "#DXAEUY#0"; break; // Basic sounds
                                    case 23: newPG = "#EDVU95#0"; break; // Sound on mesh
                                    case 24: newPG = "#N96NXC#0"; break; // SSAO rendering pipeline
                                    case 25: newPG = "#7D2QDD#0"; break; // SSAO 2
                                    case 26: newPG = "#V2DAKC#0"; break; // Volumetric light scattering
                                    case 27: newPG = "#XH85A9#0"; break; // Refraction and reflection
                                    case 28: newPG = "#8MGKWK#0"; break; // PBR
                                    case 29: newPG = "#0K8EYN#0"; break; // Instanced bones
                                    case 30: newPG = "#C245A1#0"; break; // Pointer events handling
                                    case 31: newPG = "#TAFSN0#2"; break; // WebVR
                                    case 32: newPG = "#3VMTI9#0"; break; // GUI
                                    case 33: newPG = "#7149G4#0"; break; // Physics

                                    default: newPG = ""; break;
                                }
                                window.location.href = location.protocol + "//" + location.host + location.pathname + "#" + newPG;
                            } else if (query.indexOf("=") === -1) {
                                loadScript("scripts/" + query + ".js", query);
                            } else {
                                loadScript(settingsPG.DefaultScene, "Basic scene");
                            }
                        } else {
                            loadScript(settingsPG.DefaultScene, "Basic scene");
                        }
                    }

                    // Restore theme
                    settingsPG.restoreTheme(monacoCreator);
                    // Restore language
                    settingsPG.setScriptLanguage();
                }
            }
        };

        xhr.send(null);
    };

    var createNewScript = function () {
        // check if checked is on
        let iCanClear = checkSafeMode("Are you sure you want to create a new playground?");
        if (!iCanClear) return;
        location.hash = "";
        currentSnippetToken = null;
        currentSnippetTitle = null;
        currentSnippetDescription = null;
        currentSnippetTags = null;
        showNoMetadata();
        if (monacoCreator.monacoMode === "javascript") {
            monacoCreator.JsEditor.setValue('// You have to create a function called createScene. This function must return a BABYLON.Scene object\r\n// You can reference the following variables: scene, canvas\r\n// You must at least define a camera\r\n\r\nvar createScene = function() {\r\n\tvar scene = new BABYLON.Scene(engine);\r\n\tvar camera = new BABYLON.ArcRotateCamera("Camera", -Math.PI / 2, Math.PI / 2, 12, BABYLON.Vector3.Zero(), scene);\r\n\tcamera.attachControl(canvas, true);\r\n\r\n\r\n\r\n\treturn scene;\r\n};');
        } else {
            monacoCreator.JsEditor.setValue('// You have to create a class called Playground. This class must provide a static function named CreateScene(engine, canvas) which must return a BABYLON.Scene object\r\n// You must at least define a camera inside the CreateScene function\r\n\r\nclass Playground {\r\n\tpublic static CreateScene(engine: BABYLON.Engine, canvas: HTMLCanvasElement): BABYLON.Scene {\r\n\t\tvar scene = new BABYLON.Scene(engine);\r\n\r\n\t\tvar camera = new BABYLON.FreeCamera("camera1", new BABYLON.Vector3(0, 5, -10), scene);\r\n\t\tcamera.setTarget(BABYLON.Vector3.Zero());\r\n\t\tcamera.attachControl(canvas, true);\r\n\r\n\t\treturn scene;\r\n\t}\r\n}');
        }
        monacoCreator.JsEditor.setPosition({ lineNumber: 11, column: 0 });
        monacoCreator.JsEditor.focus();
        compileAndRun();
    };

    var clear = function () {
        // check if checked is on
        let iCanClear = checkSafeMode("Are you sure you want to clear the playground?");
        if (!iCanClear) return;
        location.hash = "";
        currentSnippetToken = null;
        monacoCreator.JsEditor.setValue('');
        monacoCreator.JsEditor.setPosition({ lineNumber: 0, column: 0 });
        monacoCreator.JsEditor.focus();
    };

    // TO DO - Is this really usefull ? Safe mode only available in full HD screen, not for small screen ? Why ?!
    var checkSafeMode = function (message) {
        var safeToggle = document.getElementById("safemodeToggle1280");
        if (safeToggle.classList.contains('checked')) {
            let confirm = window.confirm(message);
            if (!confirm) {
                return false;
            } else {
                document.getElementById("safemodeToggle1280").classList.toggle('checked');
                return true;
            }
        } else {
            return true;
        }
    };

    /**
     * Metadatas form
     */
    var showNoMetadata = function () {
        if (currentSnippetTitle) {
            document.getElementById("saveFormTitle").value = currentSnippetTitle;
            document.getElementById("saveFormTitle").readOnly = true;
        }
        else {
            document.getElementById("saveFormTitle").value = '';
            document.getElementById("saveFormTitle").readOnly = false;
        }
        if (currentSnippetDescription) {
            document.getElementById("saveFormDescription").value = currentSnippetDescription;
            document.getElementById("saveFormDescription").readOnly = true;
        }
        else {
            document.getElementById("saveFormDescription").value = '';
            document.getElementById("saveFormDescription").readOnly = false;
        }
        if (currentSnippetTags) {
            document.getElementById("saveFormTags").value = currentSnippetTags;
            document.getElementById("saveFormTags").readOnly = true;
        }
        else {
            document.getElementById("saveFormTags").value = '';
            document.getElementById("saveFormTags").readOnly = false;
        }
        document.getElementById("saveFormButtons").style.display = "block";
        document.getElementById("saveFormButtonOk").style.display = "inline-block";
    };
    var hideNoMetadata = function () {
        document.getElementById("saveFormTitle").readOnly = true;
        document.getElementById("saveFormDescription").readOnly = true;
        document.getElementById("saveFormTags").readOnly = true;
        document.getElementById("saveFormButtonOk").style.display = "none";
        utils.setToMultipleID("metadataButton", "display", "inline-block");
    };
    showNoMetadata();
    
    /*
     * Metadatas save
     */
    // TO DO - Search what is the appropriate place for this code
    var save = function () {

        // Retrieve title if necessary
        if (document.getElementById("saveLayer")) {
            currentSnippetTitle = document.getElementById("saveFormTitle").value;
            currentSnippetDescription = document.getElementById("saveFormDescription").value;
            currentSnippetTags = document.getElementById("saveFormTags").value;
        }

        var xmlHttp = new XMLHttpRequest();
        xmlHttp.onreadystatechange = function () {
            if (xmlHttp.readyState === 4) {
                if (xmlHttp.status === 200) {
                    var baseUrl = location.href.replace(location.hash, "").replace(location.search, "");
                    var snippet = JSON.parse(xmlHttp.responseText);
                    var newUrl = baseUrl + "#" + snippet.id;
                    currentSnippetToken = snippet.id;
                    if (snippet.version && snippet.version !== "0") {
                        newUrl += "#" + snippet.version;
                    }
                    location.href = newUrl;
                    // Hide the complete title & co message
                    hideNoMetadata();
                    compileAndRun();
                } else {
                    utils.showError("Unable to save your code. It may be too long.", null);
                }
            }
        }

        xmlHttp.open("POST", snippetV3Url + (currentSnippetToken ? "/" + currentSnippetToken : ""), true);
        xmlHttp.setRequestHeader("Content-Type", "application/json");

        var dataToSend = {
            payload: JSON.stringify({
                code: monacoCreator.JsEditor.getValue()
            }),
            name: currentSnippetTitle,
            description: currentSnippetDescription,
            tags: currentSnippetTags
        };

        xmlHttp.send(JSON.stringify(dataToSend));
    };
    var askForSave = function () {
        if (currentSnippetTitle == null
            || currentSnippetDescription == null
            || currentSnippetTags == null) {

            document.getElementById("saveLayer").style.display = "block";
        }
        else {
            save();
        }
    };
    document.getElementById("saveFormButtonOk").addEventListener("click", function () {
        document.getElementById("saveLayer").style.display = "none";
        save();
    });
    document.getElementById("saveFormButtonCancel").addEventListener("click", function () {
        document.getElementById("saveLayer").style.display = "none";
    });

    /**
     * Compile the script in the editor, and run the preview in the canvas
     */
    var compileAndRun = function () {
        try {
            var waitRing = document.getElementById("waitDiv");
            if (waitRing) {
                waitRing.style.display = "none";
            }

            if (!BABYLON.Engine.isSupported()) {
                utils.showError("Your browser does not support WebGL. Please, try to update it, or install a compatible one.", null);
                return;
            }

            var showInspector = false;
            showBJSPGMenu();
            monacoCreator.JsEditor.updateOptions({ readOnly: false });

            if (BABYLON.Engine.LastCreatedScene && BABYLON.Engine.LastCreatedScene.debugLayer.isVisible()) {
                showInspector = true;
            }

            if (engine) {
                engine.dispose();
                engine = null;
            }

            var canvas = document.getElementById("renderCanvas");
            document.getElementById("errorZone").style.display = 'none';
            document.getElementById("errorZone").innerHTML = "";
            document.getElementById("statusBar").innerHTML = "Loading assets... Please wait.";
            var checkCamera = true;
            var checkSceneCount = true;
            var createEngineFunction = "createDefaultEngine";
            var createSceneFunction;

            monacoCreator.getRunCode(function (code) {
                var createDefaultEngine = function () {
                    return new BABYLON.Engine(canvas, true, { preserveDrawingBuffer: true, stencil: true });
                }

                var scene;
                var defaultEngineZip = "new BABYLON.Engine(canvas, true, { preserveDrawingBuffer: true, stencil: true })";

                if (code.indexOf("createEngine") !== -1) {
                    createEngineFunction = "createEngine";
                }

                // Check for different typos
                if (code.indexOf("delayCreateScene") !== -1) { // createScene
                    createSceneFunction = "delayCreateScene";
                    checkCamera = false;
                } else if (code.indexOf("createScene") !== -1) { // createScene
                    createSceneFunction = "createScene";
                } else if (code.indexOf("CreateScene") !== -1) { // CreateScene
                    createSceneFunction = "CreateScene";
                } else if (code.indexOf("createscene") !== -1) { // createscene
                    createSceneFunction = "createscene";
                }

                if (!createSceneFunction) {
                    // just pasted code.
                    engine = createDefaultEngine();
                    scene = new BABYLON.Scene(engine);
                    eval("runScript = function(scene, canvas) {" + code + "}");
                    runScript(scene, canvas);

                    zipTool.ZipCode = "var engine = " + defaultEngineZip + ";\r\nvar scene = new BABYLON.Scene(engine);\r\n\r\n" + code;
                } else {
                    //execute the code
                    eval(code);
                    //create engine
                    eval("engine = " + createEngineFunction + "()");
                    if (!engine) {
                        utils.showError("createEngine function must return an engine.", null);
                        return;
                    }

                    //create scene
                    eval("scene = " + createSceneFunction + "()");

                    if (!scene) {
                        utils.showError(createSceneFunction + " function must return a scene.", null);
                        return;
                    }

                    // if scene returns a promise avoid checks
                    if (scene.then) {
                        checkCamera = false;
                        checkSceneCount = false;
                    }

                    var createEngineZip = (createEngineFunction === "createEngine")
                        ? "createEngine()"
                        : defaultEngineZip;

                    zipTool.zipCode =
                        code + "\r\n\r\n" +
                        "var engine = " + createEngineZip + ";\r\n" +
                        "var scene = " + createSceneFunction + "();";

                }

                engine.runRenderLoop(function () {
                    if (engine.scenes.length === 0) {
                        return;
                    }

                    if (canvas.width !== canvas.clientWidth) {
                        engine.resize();
                    }

                    var scene = engine.scenes[0];

                    if (scene.activeCamera || scene.activeCameras.length > 0) {
                        scene.render();
                    }

                    fpsLabel.innerHTML = engine.getFps().toFixed() + " fps";
                });

                if (checkSceneCount && engine.scenes.length === 0) {

                    utils.showError("You must at least create a scene.", null);
                    return;
                }

                if (checkCamera && engine.scenes[0].activeCamera == null) {
                    utils.showError("You must at least create a camera.", null);
                    return;
                } else if (scene.then) {
                    scene.then(function () {
                        document.getElementById("statusBar").innerHTML = "";
                    });
                } else {
                    engine.scenes[0].executeWhenReady(function () {
                        document.getElementById("statusBar").innerHTML = "";
                    });
                }

                if (scene) {
                    if (showInspector) {
                        if (scene.then) {
                            // Handle if scene is a promise
                            scene.then(function (s) {
                                if (!s.debugLayer.isVisible()) {
                                    s.debugLayer.show({ embedMode: true });
                                }
                            })
                        } else {
                            if (!scene.debugLayer.isVisible()) {
                                scene.debugLayer.show({ embedMode: true });
                            }
                        }
                    }
                }
            });

        } catch (e) {
            utils.showError(e.message, e);
            // Also log error in console to help debug playgrounds
            console.error(e);
        }
    };

    /**
     * BJS version
     */
    // TO DO - Rewrite that
    var setVersion = function (version) {
        // switch (version) {
        //     case "stable":
        //         location.href = "indexStable.html" + location.hash;
        //         break;
        //     default:
        //         location.href = "index.html" + location.hash;
        //         break;
        // }
    }
    utils.setToMultipleID("mainTitle", "innerHTML", "v" + BABYLON.Engine.Version);

    // TO DO - Make it work on small screens and mobile
    var showQRCode = function () {
        $("#qrCodeImage").empty();
        var playgroundCode = window.location.href.split("#");
        playgroundCode.shift();
        $("#qrCodeImage").qrcode({ text: "https://playground.babylonjs.com/frame.html#" + (playgroundCode.join("#")) });
    };

    /**
     * Toggle the code editor
     */
    var toggleEditor = function () {
        var editorButton = document.getElementById("editorButton1280");
        var scene = engine.scenes[0];

        // If the editor is present
        if (editorButton.classList.contains('checked')) {
            utils.setToMultipleID("editorButton", "removeClass", 'checked');
            splitInstance.collapse(0);
            utils.setToMultipleID("editorButton", "innerHTML", 'Editor <i class="fa fa-square" aria-hidden="true"></i>');
        } else {
            utils.setToMultipleID("editorButton", "addClass", 'checked');
            splitInstance.setSizes([50, 50]);  // Reset
            utils.setToMultipleID("editorButton", "innerHTML", 'Editor <i class="fa fa-check-square" aria-hidden="true"></i>');
        }
        engine.resize();

        if (scene.debugLayer.isVisible()) {
            scene.debugLayer.show({ embedMode: true });
        }
    }

    /**
     * Toggle the BJS debug layer
     */
    var toggleDebug = function () {
        // Always showing the debug layer, because you can close it by itself
        var scene = engine.scenes[0];
        if (scene.debugLayer.isVisible()) {
            scene.debugLayer.hide();
        }
        else {
            scene.debugLayer.show({ embedMode: true });
        }
    }

    // Load scripts list
    loadScriptsList();

    /**
     * HASH part
     */
    // TO DO - Rewrite / move this code
    var previousHash = "";
    var cleanHash = function () {
        var splits = decodeURIComponent(location.hash.substr(1)).split("#");

        if (splits.length > 2) {
            splits.splice(2, splits.length - 2);
        }

        location.hash = splits.join("#");
    }
    var checkHash = function (firstTime) {
        if (location.hash) {
            if (previousHash !== location.hash) {
                cleanHash();

                previousHash = location.hash;

                try {
                    var xmlHttp = new XMLHttpRequest();
                    xmlHttp.onreadystatechange = function () {
                        if (xmlHttp.readyState === 4) {
                            if (xmlHttp.status === 200) {

                                if (!checkTypescriptSupport(xmlHttp)) {
                                    return;
                                }

                                var snippet = JSON.parse(xmlHttp.responseText);

                                monacoCreator.BlockEditorChange = true;
                                monacoCreator.JsEditor.setValue(JSON.parse(snippet.jsonPayload).code.toString());

                                // Check if title / descr / tags are already set
                                if (snippet.name != null && snippet.name != "") {
                                    currentSnippetTitle = snippet.name;
                                }
                                else currentSnippetTitle = null;

                                if (snippet.description != null && snippet.description != "") {
                                    currentSnippetDescription = snippet.description;
                                }
                                else currentSnippetDescription = null;

                                if (snippet.tags != null && snippet.tags != "") {
                                    currentSnippetTags = snippet.tags;
                                }
                                else currentSnippetTags = null;

                                if (currentSnippetTitle != null && currentSnippetTags != null && currentSnippetDescription) {
                                    if (document.getElementById("saveLayer")) {

                                        document.getElementById("saveFormTitle").value = currentSnippetTitle;
                                        document.getElementById("saveFormDescription").value = currentSnippetDescription;
                                        document.getElementById("saveFormTags").value = currentSnippetTags;

                                        hideNoMetadata();
                                    }
                                }
                                else {
                                    showNoMetadata();
                                }

                                monacoCreator.JsEditor.setPosition({ lineNumber: 0, column: 0 });
                                monacoCreator.BlockEditorChange = false;
                                compileAndRun();

                                // utils.setToMultipleID("currentScript", "innerHTML", "Custom");
                            }
                        }
                    };

                    var hash = location.hash.substr(1);
                    currentSnippetToken = hash.split("#")[0];
                    if (!hash.split("#")[1]) hash += "#0";


                    xmlHttp.open("GET", snippetV3Url + "/" + hash.replace("#", "/"));
                    xmlHttp.send();
                } catch (e) {

                }
            }
        }
        setTimeout(checkHash, 200);
    }
    checkHash(true);


    // ---------- UI
    // TO DO - A proper UI class

    // Run
    utils.setToMultipleID("runButton", "click", compileAndRun);
    // New
    utils.setToMultipleID("newButton", "click", createNewScript);
    // Clear 
    utils.setToMultipleID("clearButton", "click", clear);
    // Save
    utils.setToMultipleID("saveButton", "click", askForSave);
    // Zip
    utils.setToMultipleID("zipButton", "click", function() {
        zipTool.getZip(engine);
    });
    // Themes
    utils.setToMultipleID("darkTheme", "click", [settingsPG.setTheme.bind(settingsPG, 'dark'), menuPG.clickOptionSub.bind(menuPG)]);
    utils.setToMultipleID("lightTheme", "click", [settingsPG.setTheme.bind(settingsPG, 'light'), menuPG.clickOptionSub.bind(menuPG)]);
    // Size
    var displayFontSize = document.getElementsByClassName('displayFontSize');
    for (var i = 0; i < displayFontSize.length; i++) {
        var options = displayFontSize[i].querySelectorAll('.option');
        for (var j = 0; j < options.length; j++) {
            options[j].addEventListener('click', menuPG.clickOptionSub.bind(menuPG));
            options[j].addEventListener('click', settingsPG.setFontSize.bind(settingsPG, options[j].innerText));
        }
    }
    // Footer links
    var displayFontSize = document.getElementsByClassName('displayFooterLinks');
    for (var i = 0; i < displayFontSize.length; i++) {
        var options = displayFontSize[i].querySelectorAll('.option');
        for (var j = 0; j < options.length; j++) {
            options[j].addEventListener('click', menuPG.clickOptionSub.bind(this));
        }
    }
    // Language (JS / TS)
    utils.setToMultipleID("toTSbutton", "click", function () {
        settingsPG.ScriptLanguage = "TS";
        location.reload();
    });
    utils.setToMultipleID("toJSbutton", "click", function () {
        settingsPG.ScriptLanguage = "JS";
        location.reload();
    });
    // Safe mode
    utils.setToMultipleID("safemodeToggle", 'click', function () {
        document.getElementById("safemodeToggle1280").classList.toggle('checked');
        if (document.getElementById("safemodeToggle1280").classList.contains('checked')) {
            utils.setToMultipleID("safemodeToggle", "innerHTML", 'Safe mode <i class="fa fa-check-square" aria-hidden="true"></i>');
        } else {
            utils.setToMultipleID("safemodeToggle", "innerHTML", 'Safe mode <i class="fa fa-square" aria-hidden="true"></i>');
        }
    });
    // Editor
    utils.setToMultipleID("editorButton", "click", toggleEditor);
    // FullScreen
    utils.setToMultipleID("fullscreenButton", "click", menuPG.goFullscreen);
    // Editor fullScreen
    utils.setToMultipleID("editorFullscreenButton", "click", menuPG.editorGoFullscreen);
    // Format
    utils.setToMultipleID("formatButton", "click", monacoCreator.formatCode.bind(monacoCreator));
    // Format
    utils.setToMultipleID("minimapToggle", "click", monacoCreator.toggleMinimap.bind(monacoCreator));
    // Debug
    utils.setToMultipleID("debugButton", "click", toggleDebug);
    // Metadata
    utils.setToMultipleID("metadataButton", "click", menuPG.displayMetadata);

    // Restore theme
    settingsPG.restoreTheme(monacoCreator);
    // Restore language
    settingsPG.setScriptLanguage();
    //
    menuPG.resizeBigCanvas();
}