dat.gui/gui.js

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var GUI = new function() {
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var _this = this;
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// Contains list of properties we've add to the GUI in the following format:
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// [object, propertyName, controllerObject]
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var registeredProperties = [];
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this.add = function() {
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// We need to call GUI.start() before .add()
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if (!started) {
error("Make sure to call GUI.start() in the window.onload function");
return;
}
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var object = arguments[0];
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var propertyName = arguments[1];
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// Have we already added this?
if (registeredPropertiesContains(object, propertyName)) {
error("Controller for \"" + propertyName+"\" already added.");
return;
}
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var value = object[propertyName];
// Does this value exist? Is it accessible?
if (value == undefined) {
error(object + " either has no property \""+propertyName+"\", or the property is inaccessible.");
return;
}
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var type = typeof value;
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var handler = addHandlers[type];
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// Do we know how to deal with this data type?
if (handler == undefined) {
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error("Cannot create controller for data type \""+type+"\"");
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return;
}
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var controllerObject = handler.apply(this, arguments);
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// Were we able to make the controller?
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if (!controllerObject) {
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error("Error creating controller for \""+propertyName+"\".");
return;
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}
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// Success.
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controllerContainer.appendChild(controllerObject.domElement);
registeredProperties.push([object, propertyName, controllerObject]);
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return controllerObject;
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}
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var addHandlers = {
"number": function() {
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return construct(NumberController, arguments);
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},
"string": function() {
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return construct(StringController, arguments);
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},
"boolean": function() {
return construct(BooleanController, arguments);
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},
"function": function() {
return construct(FunctionController, arguments);
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},
};
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var registeredPropertiesContains = function(object, property) {
// TODO:
return false;
};
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var error = function(str) {
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if (typeof console.log == 'function') {
console.error("[GUI ERROR] " + str);
}
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};
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var construct = function(constructor, args) {
function F() {
return constructor.apply(this, args);
}
F.prototype = constructor.prototype;
return new F();
};
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// GUI ... GUI
var domElement;
var controllerContainer;
var started = false;
var open = false;
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// TODO: obtain this dynamically?
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var domElementMarginTop = 300;
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this.start = function() {
domElement = document.createElement('div');
domElement.setAttribute('id', 'guidat');
controllerContainer = document.createElement('div');
controllerContainer.setAttribute('id', 'guidat-controllers');
toggleButton = document.createElement('a');
toggleButton.setAttribute('id', 'guidat-toggle');
toggleButton.setAttribute('href', '#');
toggleButton.innerHTML = "Show Controls";
toggleButton.addEventListener('click', function(e) {
_this.toggle();
e.preventDefault();
}, false);
domElement.appendChild(controllerContainer);
domElement.appendChild(toggleButton);
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domElement.style.marginTop = -domElementMarginTop+"px";
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document.body.appendChild(domElement);
started = true;
};
this.toggle = function() {
if (open) {
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this.hide();
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} else {
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this.show();
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}
};
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this.show = function() {
domElement.style.marginTop = 0+"px";
toggleButton.innerHTML = "Hide Controls";
open = true;
}
this.hide = function() {
domElement.style.marginTop = -domElementMarginTop+"px";
toggleButton.innerHTML = "Show Controls";
open = false;
}
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};