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GUI.js
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GUI.js
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/**
* dat-gui JavaScript Controller Library
* http://code.google.com/p/dat-gui
*
* Copyright 2011 Data Arts Team, Google Creative Lab
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*/
import css from '../utils/css';
import saveDialogueContents from './saveDialogue.html';
import ControllerFactory from '../controllers/ControllerFactory';
import Controller from '../controllers/Controller';
import BooleanController from '../controllers/BooleanController';
import FunctionController from '../controllers/FunctionController';
import NumberControllerBox from '../controllers/NumberControllerBox';
import NumberControllerSlider from '../controllers/NumberControllerSlider';
import ColorController from '../controllers/ColorController';
import requestAnimationFrame from '../utils/requestAnimationFrame';
import CenteredDiv from '../dom/CenteredDiv';
import dom from '../dom/dom';
import common from '../utils/common';
import styleSheet from './style.scss'; // CSS to embed in build
css.inject(styleSheet);
/** @ignore Outer-most className for GUI's */
const CSS_NAMESPACE = 'dg';
const HIDE_KEY_CODE = 72;
/** @ignore The only value shared between the JS and SCSS. Use caution. */
const CLOSE_BUTTON_HEIGHT = 20;
const DEFAULT_DEFAULT_PRESET_NAME = 'Default';
const SUPPORTS_LOCAL_STORAGE = (function() {
try {
return !!window.localStorage;
} catch (e) {
return false;
}
}());
let SAVE_DIALOGUE;
/** @ignore Have we yet to create an autoPlace GUI? */
let autoPlaceVirgin = true;
/** @ignore Fixed position div that auto place GUI's go inside */
let autoPlaceContainer;
/** @ignore Are we hiding the GUI's ? */
let hide = false;
/** @private GUI's which should be hidden */
const hideableGuis = [];
/**
* @class A lightweight controller library for JavaScript. It allows you to easily
* manipulate variables and fire functions on the fly.
*
* @typicalname gui
*
* @example
* // Creating a GUI with options.
* var gui = new dat.GUI({name: 'My GUI'});
*
* @example
* // Creating a GUI and a subfolder.
* var gui = new dat.GUI();
* var folder1 = gui.addFolder('Flow Field');
*
* @param {Object} [params]
* @param {String} [params.name] The name of this GUI.
* @param {Object} [params.load] JSON object representing the saved state of
* this GUI.
* @param {dat.gui.GUI} [params.parent] The GUI I'm nested in.
* @param {Boolean} [params.autoPlace=true]
* @param {Boolean} [params.hideable=true] If true, GUI is shown/hidden by <kbd>h</kbd> keypress.
* @param {Boolean} [params.closed=false] If true, starts closed
* @param {Boolean} [params.closeOnTop=false] If true, close/open button shows on top of the GUI
*/
const GUI = function(pars) {
const _this = this;
let params = pars || {};
/**
* Outermost DOM Element
* @type {DOMElement}
*/
this.domElement = document.createElement('div');
this.__ul = document.createElement('ul');
this.domElement.appendChild(this.__ul);
dom.addClass(this.domElement, CSS_NAMESPACE);
/**
* Nested GUI's by name
* @ignore
*/
this.__folders = {};
this.__controllers = [];
/**
* List of objects I'm remembering for save, only used in top level GUI
* @ignore
*/
this.__rememberedObjects = [];
/**
* Maps the index of remembered objects to a map of controllers, only used
* in top level GUI.
*
* @private
* @ignore
*
* @example
* [
* {
* propertyName: Controller,
* anotherPropertyName: Controller
* },
* {
* propertyName: Controller
* }
* ]
*/
this.__rememberedObjectIndecesToControllers = [];
this.__listening = [];
// Default parameters
params = common.defaults(params, {
closeOnTop: false,
autoPlace: true,
width: GUI.DEFAULT_WIDTH
});
params = common.defaults(params, {
resizable: params.autoPlace,
hideable: params.autoPlace
});
if (!common.isUndefined(params.load)) {
// Explicit preset
if (params.preset) {
params.load.preset = params.preset;
}
} else {
params.load = { preset: DEFAULT_DEFAULT_PRESET_NAME };
}
if (common.isUndefined(params.parent) && params.hideable) {
hideableGuis.push(this);
}
// Only root level GUI's are resizable.
params.resizable = common.isUndefined(params.parent) && params.resizable;
if (params.autoPlace && common.isUndefined(params.scrollable)) {
params.scrollable = true;
}
// params.scrollable = common.isUndefined(params.parent) && params.scrollable === true;
// Not part of params because I don't want people passing this in via
// constructor. Should be a 'remembered' value.
let useLocalStorage =
SUPPORTS_LOCAL_STORAGE &&
localStorage.getItem(getLocalStorageHash(this, 'isLocal')) === 'true';
let saveToLocalStorage;
let titleRow;
Object.defineProperties(this,
/** @lends GUI.prototype */
{
/**
* The parent <code>GUI</code>
* @type dat.gui.GUI
*/
parent: {
get: function() {
return params.parent;
}
},
scrollable: {
get: function() {
return params.scrollable;
}
},
/**
* Handles <code>GUI</code>'s element placement for you
* @type Boolean
*/
autoPlace: {
get: function() {
return params.autoPlace;
}
},
/**
* Handles <code>GUI</code>'s position of open/close button
* @type Boolean
*/
closeOnTop: {
get: function() {
return params.closeOnTop;
}
},
/**
* The identifier for a set of saved values
* @type String
*/
preset: {
get: function() {
if (_this.parent) {
return _this.getRoot().preset;
}
return params.load.preset;
},
set: function(v) {
if (_this.parent) {
_this.getRoot().preset = v;
} else {
params.load.preset = v;
}
setPresetSelectIndex(this);
_this.revert();
}
},
/**
* The width of <code>GUI</code> element
* @type Number
*/
width: {
get: function() {
return params.width;
},
set: function(v) {
params.width = v;
setWidth(_this, v);
}
},
/**
* The name of <code>GUI</code>. Used for folders. i.e
* a folder's name
* @type String
*/
name: {
get: function() {
return params.name;
},
set: function(v) {
// TODO Check for collisions among sibling folders
params.name = v;
if (titleRow) {
titleRow.innerHTML = params.name;
}
}
},
/**
* Whether the <code>GUI</code> is collapsed or not
* @type Boolean
*/
closed: {
get: function() {
return params.closed;
},
set: function(v) {
params.closed = v;
if (params.closed) {
dom.addClass(_this.__ul, GUI.CLASS_CLOSED);
} else {
dom.removeClass(_this.__ul, GUI.CLASS_CLOSED);
}
// For browsers that aren't going to respect the CSS transition,
// Lets just check our height against the window height right off
// the bat.
this.onResize();
if (_this.__closeButton) {
_this.__closeButton.innerHTML = v ? GUI.TEXT_OPEN : GUI.TEXT_CLOSED;
}
}
},
/**
* Contains all presets
* @type Object
*/
load: {
get: function() {
return params.load;
}
},
/**
* Determines whether or not to use <a href="https://developer.mozilla.org/en/DOM/Storage#localStorage">localStorage</a> as the means for
* <code>remember</code>ing
* @type Boolean
*/
useLocalStorage: {
get: function() {
return useLocalStorage;
},
set: function(bool) {
if (SUPPORTS_LOCAL_STORAGE) {
useLocalStorage = bool;
if (bool) {
dom.bind(window, 'unload', saveToLocalStorage);
} else {
dom.unbind(window, 'unload', saveToLocalStorage);
}
localStorage.setItem(getLocalStorageHash(_this, 'isLocal'), bool);
}
}
}
});
// Are we a root level GUI?
if (common.isUndefined(params.parent)) {
this.closed = params.closed || false;
dom.addClass(this.domElement, GUI.CLASS_MAIN);
dom.makeSelectable(this.domElement, false);
// Are we supposed to be loading locally?
if (SUPPORTS_LOCAL_STORAGE) {
if (useLocalStorage) {
_this.useLocalStorage = true;
const savedGui = localStorage.getItem(getLocalStorageHash(this, 'gui'));
if (savedGui) {
params.load = JSON.parse(savedGui);
}
}
}
this.__closeButton = document.createElement('div');
this.__closeButton.innerHTML = GUI.TEXT_CLOSED;
dom.addClass(this.__closeButton, GUI.CLASS_CLOSE_BUTTON);
if (params.closeOnTop) {
dom.addClass(this.__closeButton, GUI.CLASS_CLOSE_TOP);
this.domElement.insertBefore(this.__closeButton, this.domElement.childNodes[0]);
} else {
dom.addClass(this.__closeButton, GUI.CLASS_CLOSE_BOTTOM);
this.domElement.appendChild(this.__closeButton);
}
dom.bind(this.__closeButton, 'click', function() {
_this.closed = !_this.closed;
});
// Oh, you're a nested GUI!
} else {
if (params.closed === undefined) {
params.closed = true;
}
const titleRowName = document.createTextNode(params.name);
dom.addClass(titleRowName, 'controller-name');
titleRow = addRow(_this, titleRowName);
const onClickTitle = function(e) {
e.preventDefault();
_this.closed = !_this.closed;
return false;
};
dom.addClass(this.__ul, GUI.CLASS_CLOSED);
dom.addClass(titleRow, 'title');
dom.bind(titleRow, 'click', onClickTitle);
if (!params.closed) {
this.closed = false;
}
}
if (params.autoPlace) {
if (common.isUndefined(params.parent)) {
if (autoPlaceVirgin) {
autoPlaceContainer = document.createElement('div');
dom.addClass(autoPlaceContainer, CSS_NAMESPACE);
dom.addClass(autoPlaceContainer, GUI.CLASS_AUTO_PLACE_CONTAINER);
document.body.appendChild(autoPlaceContainer);
autoPlaceVirgin = false;
}
// Put it in the dom for you.
autoPlaceContainer.appendChild(this.domElement);
// Apply the auto styles
dom.addClass(this.domElement, GUI.CLASS_AUTO_PLACE);
}
// Make it not elastic.
if (!this.parent) {
setWidth(_this, params.width);
}
}
this.__resizeHandler = function() {
_this.onResizeDebounced();
};
dom.bind(window, 'resize', this.__resizeHandler);
dom.bind(this.__ul, 'webkitTransitionEnd', this.__resizeHandler);
dom.bind(this.__ul, 'transitionend', this.__resizeHandler);
dom.bind(this.__ul, 'oTransitionEnd', this.__resizeHandler);
this.onResize();
if (params.resizable) {
addResizeHandle(this);
}
saveToLocalStorage = function() {
if (SUPPORTS_LOCAL_STORAGE && localStorage.getItem(getLocalStorageHash(_this, 'isLocal')) === 'true') {
localStorage.setItem(getLocalStorageHash(_this, 'gui'), JSON.stringify(_this.getSaveObject()));
}
};
// expose this method publicly
this.saveToLocalStorageIfPossible = saveToLocalStorage;
function resetWidth() {
const root = _this.getRoot();
root.width += 1;
common.defer(function() {
root.width -= 1;
});
}
if (!params.parent) {
resetWidth();
}
};
GUI.toggleHide = function() {
hide = !hide;
common.each(hideableGuis, function(gui) {
gui.domElement.style.display = hide ? 'none' : '';
});
};
GUI.CLASS_AUTO_PLACE = 'a';
GUI.CLASS_AUTO_PLACE_CONTAINER = 'ac';
GUI.CLASS_MAIN = 'main';
GUI.CLASS_CONTROLLER_ROW = 'cr';
GUI.CLASS_TOO_TALL = 'taller-than-window';
GUI.CLASS_CLOSED = 'closed';
GUI.CLASS_CLOSE_BUTTON = 'close-button';
GUI.CLASS_CLOSE_TOP = 'close-top';
GUI.CLASS_CLOSE_BOTTOM = 'close-bottom';
GUI.CLASS_DRAG = 'drag';
GUI.DEFAULT_WIDTH = 245;
GUI.TEXT_CLOSED = 'Close Controls';
GUI.TEXT_OPEN = 'Open Controls';
GUI._keydownHandler = function(e) {
if (document.activeElement.type !== 'text' &&
(e.which === HIDE_KEY_CODE || e.keyCode === HIDE_KEY_CODE)) {
GUI.toggleHide();
}
};
dom.bind(window, 'keydown', GUI._keydownHandler, false);
common.extend(
GUI.prototype,
/** @lends GUI.prototype */
{
/**
* Adds a new {@link Controller} to the GUI. The type of controller created
* is inferred from the initial value of <code>object[property]</code>. For
* color properties, see {@link addColor}.
*
* @param {Object} object The object to be manipulated
* @param {String} property The name of the property to be manipulated
* @param {Number} [min] Minimum allowed value
* @param {Number} [max] Maximum allowed value
* @param {Number} [step] Increment by which to change value
* @returns {Controller} The controller that was added to the GUI.
* @instance
*
* @example
* // Add a string controller.
* var person = {name: 'Sam'};
* gui.add(person, 'name');
*
* @example
* // Add a number controller slider.
* var person = {age: 45};
* gui.add(person, 'age', 0, 100);
*/
add: function(object, property) {
return add(
this,
object,
property,
{
factoryArgs: Array.prototype.slice.call(arguments, 2)
}
);
},
/**
* Adds a new color controller to the GUI.
*
* @param object
* @param property
* @returns {Controller} The controller that was added to the GUI.
* @instance
*
* @example
* var palette = {
* color1: '#FF0000', // CSS string
* color2: [ 0, 128, 255 ], // RGB array
* color3: [ 0, 128, 255, 0.3 ], // RGB with alpha
* color4: { h: 350, s: 0.9, v: 0.3 } // Hue, saturation, value
* };
* gui.addColor(palette, 'color1');
* gui.addColor(palette, 'color2');
* gui.addColor(palette, 'color3');
* gui.addColor(palette, 'color4');
*/
addColor: function(object, property) {
return add(
this,
object,
property,
{
color: true
}
);
},
/**
* Removes the given controller from the GUI.
* @param {Controller} controller
* @instance
*/
remove: function(controller) {
// TODO listening?
this.__ul.removeChild(controller.__li);
this.__controllers.splice(this.__controllers.indexOf(controller), 1);
const _this = this;
common.defer(function() {
_this.onResize();
});
},
/**
* Removes the root GUI from the document and unbinds all event listeners.
* For subfolders, use `gui.removeFolder(folder)` instead.
* @instance
*/
destroy: function() {
if (this.parent) {
throw new Error(
'Only the root GUI should be removed with .destroy(). ' +
'For subfolders, use gui.removeFolder(folder) instead.'
);
}
if (this.autoPlace) {
autoPlaceContainer.removeChild(this.domElement);
}
const _this = this;
common.each(this.__folders, function(subfolder) {
_this.removeFolder(subfolder);
});
dom.unbind(window, 'keydown', GUI._keydownHandler, false);
removeListeners(this);
},
/**
* Creates a new subfolder GUI instance.
* @param name
* @returns {dat.gui.GUI} The new folder.
* @throws {Error} if this GUI already has a folder by the specified
* name
* @instance
*/
addFolder: function(name) {
// We have to prevent collisions on names in order to have a key
// by which to remember saved values
if (this.__folders[name] !== undefined) {
throw new Error('You already have a folder in this GUI by the' +
' name "' + name + '"');
}
const newGuiParams = { name: name, parent: this };
// We need to pass down the autoPlace trait so that we can
// attach event listeners to open/close folder actions to
// ensure that a scrollbar appears if the window is too short.
newGuiParams.autoPlace = this.autoPlace;
// Do we have saved appearance data for this folder?
if (this.load && // Anything loaded?
this.load.folders && // Was my parent a dead-end?
this.load.folders[name]) { // Did daddy remember me?
// Start me closed if I was closed
newGuiParams.closed = this.load.folders[name].closed;
// Pass down the loaded data
newGuiParams.load = this.load.folders[name];
}
const gui = new GUI(newGuiParams);
this.__folders[name] = gui;
const li = addRow(this, gui.domElement);
dom.addClass(li, 'folder');
return gui;
},
/**
* Removes a subfolder GUI instance.
* @param {dat.gui.GUI} folder The folder to remove.
* @instance
*/
removeFolder: function(folder) {
this.__ul.removeChild(folder.domElement.parentElement);
delete this.__folders[folder.name];
// Do we have saved appearance data for this folder?
if (this.load && // Anything loaded?
this.load.folders && // Was my parent a dead-end?
this.load.folders[folder.name]) {
delete this.load.folders[folder.name];
}
removeListeners(folder);
const _this = this;
common.each(folder.__folders, function(subfolder) {
folder.removeFolder(subfolder);
});
common.defer(function() {
_this.onResize();
});
},
/**
* Opens the GUI.
*/
open: function() {
this.closed = false;
},
/**
* Closes the GUI.
*/
close: function() {
this.closed = true;
},
/**
* Hides the GUI.
*/
hide: function() {
this.domElement.style.display = 'none';
},
/**
* Shows the GUI.
*/
show: function() {
this.domElement.style.display = '';
},
onResize: function() {
// we debounce this function to prevent performance issues when rotating on tablet/mobile
const root = this.getRoot();
if (root.scrollable) {
const top = dom.getOffset(root.__ul).top;
let h = 0;
common.each(root.__ul.childNodes, function(node) {
if (!(root.autoPlace && node === root.__save_row)) {
h += dom.getHeight(node);
}
});
if (window.innerHeight - top - CLOSE_BUTTON_HEIGHT < h) {
dom.addClass(root.domElement, GUI.CLASS_TOO_TALL);
root.__ul.style.height = window.innerHeight - top - CLOSE_BUTTON_HEIGHT + 'px';
} else {
dom.removeClass(root.domElement, GUI.CLASS_TOO_TALL);
root.__ul.style.height = 'auto';
}
}
if (root.__resize_handle) {
common.defer(function() {
root.__resize_handle.style.height = root.__ul.offsetHeight + 'px';
});
}
if (root.__closeButton) {
root.__closeButton.style.width = root.width + 'px';
}
},
onResizeDebounced: common.debounce(function() { this.onResize(); }, 50),
/**
* Mark objects for saving. The order of these objects cannot change as
* the GUI grows. When remembering new objects, append them to the end
* of the list.
*
* @param {...Object} objects
* @throws {Error} if not called on a top level GUI.
* @instance
* @ignore
*/
remember: function() {
if (common.isUndefined(SAVE_DIALOGUE)) {
SAVE_DIALOGUE = new CenteredDiv();
SAVE_DIALOGUE.domElement.innerHTML = saveDialogueContents;
}
if (this.parent) {
throw new Error('You can only call remember on a top level GUI.');
}
const _this = this;
common.each(Array.prototype.slice.call(arguments), function(object) {
if (_this.__rememberedObjects.length === 0) {
addSaveMenu(_this);
}
if (_this.__rememberedObjects.indexOf(object) === -1) {
_this.__rememberedObjects.push(object);
}
});
if (this.autoPlace) {
// Set save row width
setWidth(this, this.width);
}
},
/**
* @returns {dat.gui.GUI} the topmost parent GUI of a nested GUI.
* @instance
*/
getRoot: function() {
let gui = this;
while (gui.parent) {
gui = gui.parent;
}
return gui;
},
/**
* @returns {Object} a JSON object representing the current state of
* this GUI as well as its remembered properties.
* @instance
*/
getSaveObject: function() {
const toReturn = this.load;
toReturn.closed = this.closed;
// Am I remembering any values?
if (this.__rememberedObjects.length > 0) {
toReturn.preset = this.preset;
if (!toReturn.remembered) {
toReturn.remembered = {};
}
toReturn.remembered[this.preset] = getCurrentPreset(this);
}
toReturn.folders = {};
common.each(this.__folders, function(element, key) {
toReturn.folders[key] = element.getSaveObject();
});
return toReturn;
},
save: function() {
if (!this.load.remembered) {
this.load.remembered = {};
}
this.load.remembered[this.preset] = getCurrentPreset(this);
markPresetModified(this, false);
this.saveToLocalStorageIfPossible();
},
saveAs: function(presetName) {
if (!this.load.remembered) {
// Retain default values upon first save
this.load.remembered = {};
this.load.remembered[DEFAULT_DEFAULT_PRESET_NAME] = getCurrentPreset(this, true);
}
this.load.remembered[presetName] = getCurrentPreset(this);
this.preset = presetName;
addPresetOption(this, presetName, true);
this.saveToLocalStorageIfPossible();
},
revert: function(gui) {
common.each(this.__controllers, function(controller) {
// Make revert work on Default.
if (!this.getRoot().load.remembered) {
controller.setValue(controller.initialValue);
} else {
recallSavedValue(gui || this.getRoot(), controller);
}
// fire onFinishChange callback
if (controller.__onFinishChange) {
controller.__onFinishChange.call(controller, controller.getValue());
}
}, this);
common.each(this.__folders, function(folder) {
folder.revert(folder);
});
if (!gui) {
markPresetModified(this.getRoot(), false);
}
},
listen: function(controller) {
const init = this.__listening.length === 0;
this.__listening.push(controller);
if (init) {
updateDisplays(this.__listening);
}
},
updateDisplay: function() {
common.each(this.__controllers, function(controller) {
controller.updateDisplay();
});
common.each(this.__folders, function(folder) {
folder.updateDisplay();
});
}
}
);
/**
* Add a row to the end of the GUI or before another row.
*
* @param gui
* @param [newDom] If specified, inserts the dom content in the new row
* @param [liBefore] If specified, places the new row before another row
*
* @ignore
*/
function addRow(gui, newDom, liBefore) {
const li = document.createElement('li');
if (newDom) {
li.appendChild(newDom);
}
if (liBefore) {
gui.__ul.insertBefore(li, liBefore);
} else {
gui.__ul.appendChild(li);
}
gui.onResize();
return li;
}
function removeListeners(gui) {
dom.unbind(window, 'resize', gui.__resizeHandler);
if (gui.saveToLocalStorageIfPossible) {
dom.unbind(window, 'unload', gui.saveToLocalStorageIfPossible);
}
}
function markPresetModified(gui, modified) {
const opt = gui.__preset_select[gui.__preset_select.selectedIndex];
if (modified) {
opt.innerHTML = opt.value + '*';
} else {
opt.innerHTML = opt.value;
}
}
function augmentController(gui, li, controller) {
controller.__li = li;
controller.__gui = gui;
common.extend(controller, /** @lends Controller.prototype */ {
/**
* @param {Array|Object} options
* @return {Controller}
*/
options: function(options) {
if (arguments.length > 1) {
const nextSibling = controller.__li.nextElementSibling;
controller.remove();
return add(
gui,
controller.object,
controller.property,
{
before: nextSibling,
factoryArgs: [common.toArray(arguments)]
}
);
}
if (common.isArray(options) || common.isObject(options)) {
const nextSibling = controller.__li.nextElementSibling;
controller.remove();
return add(
gui,
controller.object,
controller.property,
{
before: nextSibling,
factoryArgs: [options]
}
);
}
},
/**
* Sets the name of the controller.
* @param {string} name
* @return {Controller}
*/
name: function(name) {
controller.__li.firstElementChild.firstElementChild.innerHTML = name;
return controller;
},
/**
* Sets controller to listen for changes on its underlying object.
* @return {Controller}
*/
listen: function() {
controller.__gui.listen(controller);
return controller;
},
/**
* Removes the controller from its parent GUI.
* @return {Controller}
*/
remove: function() {
controller.__gui.remove(controller);
return controller;
}
});
// All sliders should be accompanied by a box.
if (controller instanceof NumberControllerSlider) {
const box = new NumberControllerBox(controller.object, controller.property,
{ min: controller.__min, max: controller.__max, step: controller.__step });
common.each(['updateDisplay', 'onChange', 'onFinishChange', 'step', 'min', 'max'], function(method) {
const pc = controller[method];
const pb = box[method];
controller[method] = box[method] = function() {