/*! * Dialogs Manager v4.9.3 * https://github.com/kobizz/dialogs-manager * * Copyright Kobi Zaltzberg * Released under the MIT license * https://github.com/kobizz/dialogs-manager/blob/master/LICENSE.txt */ (function($, global) { 'use strict'; /* * Dialog Manager */ var DialogsManager = { widgetsTypes: {}, createWidgetType: function(typeName, properties, Parent) { if (!Parent) { Parent = this.Widget; } var WidgetType = function() { Parent.apply(this, arguments); }; var prototype = WidgetType.prototype = new Parent(typeName); prototype.types = prototype.types.concat([typeName]); $.extend(prototype, properties); prototype.constructor = WidgetType; WidgetType.extend = function(typeName, properties) { return DialogsManager.createWidgetType(typeName, properties, WidgetType); }; return WidgetType; }, addWidgetType: function(typeName, properties, Parent) { if (properties && properties.prototype instanceof this.Widget) { return this.widgetsTypes[typeName] = properties; } return this.widgetsTypes[typeName] = this.createWidgetType(typeName, properties, Parent); }, getWidgetType: function(widgetType) { return this.widgetsTypes[widgetType]; } }; /* * Dialog Manager instances constructor */ DialogsManager.Instance = function() { var self = this, elements = {}, settings = {}; var initElements = function() { elements.body = $('body'); }; var initSettings = function(options) { var defaultSettings = { classPrefix: 'dialog', effects: { show: 'fadeIn', hide: 'fadeOut' } }; $.extend(settings, defaultSettings, options); }; this.createWidget = function(widgetType, properties) { var WidgetTypeConstructor = DialogsManager.getWidgetType(widgetType), widget = new WidgetTypeConstructor(widgetType); properties = properties || {}; widget.init(self, properties); return widget; }; this.getSettings = function(property) { if (property) { return settings[property]; } return Object.create(settings); }; this.init = function(settings) { initSettings(settings); initElements(); return self; }; self.init(); }; /* * Widget types constructor */ DialogsManager.Widget = function(widgetName) { var self = this, settings = {}, events = {}, elements = {}, hideTimeOut = 0, baseClosureMethods = ['refreshPosition']; var bindEvents = function() { var windows = [elements.window]; if (elements.iframe) { windows.push(jQuery(elements.iframe[0].contentWindow)); } windows.forEach(function(window) { if (settings.hide.onEscKeyPress) { window.on('keyup', onWindowKeyUp); } if (settings.hide.onOutsideClick) { window[0].addEventListener('click', hideOnOutsideClick, true); } if (settings.hide.onOutsideContextMenu) { window[0].addEventListener('contextmenu', hideOnOutsideClick, true); } if (settings.position.autoRefresh) { window.on('resize', self.refreshPosition); } }); if (settings.hide.onClick || settings.hide.onBackgroundClick) { elements.widget.on('click', hideOnClick); } }; var callEffect = function(intent, params) { var effect = settings.effects[intent], $widget = elements.widget; if ('function' === typeof effect) { effect.apply($widget, params); } else { if ($widget[effect]) { $widget[effect].apply($widget, params); } else { throw 'Reference Error: The effect ' + effect + ' not found'; } } }; var ensureClosureMethods = function() { var closureMethodsNames = baseClosureMethods.concat(self.getClosureMethods()); $.each(closureMethodsNames, function() { var methodName = this, oldMethod = self[methodName]; self[methodName] = function() { oldMethod.apply(self, arguments); }; }); }; var fixIframePosition = function(position) { if (! position.my) { return; } var horizontalOffsetRegex = /left|right/, extraOffsetRegex = /([+-]\d+)?$/, iframeOffset = elements.iframe.offset(), iframeWindow = elements.iframe[0].contentWindow, myParts = position.my.split(' '), fixedParts = []; if (myParts.length === 1) { if (horizontalOffsetRegex.test(myParts[0])) { myParts.push('center'); } else { myParts.unshift('center'); } } myParts.forEach(function(part, index) { var fixedPart = part.replace(extraOffsetRegex, function(partOffset) { partOffset = +partOffset || 0; if (! index) { partOffset += iframeOffset.left - iframeWindow.scrollX; } else { partOffset += iframeOffset.top - iframeWindow.scrollY; } if (partOffset >= 0) { partOffset = '+' + partOffset; } return partOffset; }); fixedParts.push(fixedPart); }); position.my = fixedParts.join(' '); }; var hideOnClick = function(event) { if (isContextMenuClickEvent(event)) { return; } if (settings.hide.onClick) { if ($(event.target).closest(settings.selectors.preventClose).length) { return; } } else if (event.target !== this) { return; } self.hide(); }; var isIgnoredTarget = function(event) { if (! settings.hide.ignore) { return false; } return !! $(event.target).closest(settings.hide.ignore).length; }; var hideOnOutsideClick = function(event) { if (isContextMenuClickEvent(event) || $(event.target).closest(elements.widget).length || isIgnoredTarget(event)) { return; } self.hide(); }; var initElements = function() { self.addElement('widget'); self.addElement('header'); self.addElement('message'); self.addElement('window', window); self.addElement('body', document.body); self.addElement('container', settings.container); if (settings.iframe) { self.addElement('iframe', settings.iframe); } if (settings.closeButton) { if ( settings.closeButtonClass ) { // Backwards compatibility settings.closeButtonOptions.iconClass = settings.closeButtonClass; } const $button = $('', settings.closeButtonOptions.attributes), $buttonIcon = $(settings.closeButtonOptions.iconElement).addClass(settings.closeButtonOptions.iconClass); $button.append($buttonIcon); self.addElement('closeButton', $button); } var id = self.getSettings('id'); if (id) { self.setID(id); } var classes = []; $.each(self.types, function() { classes.push(settings.classes.globalPrefix + '-type-' + this); }); classes.push(self.getSettings('className')); elements.widget .addClass(classes.join(' ')) .attr({ 'aria-modal': true, 'role': 'document', 'tabindex': 0, }); }; var initSettings = function(parent, userSettings) { var parentSettings = $.extend(true, {}, parent.getSettings()); settings = { headerMessage: '', message: '', effects: parentSettings.effects, classes: { globalPrefix: parentSettings.classPrefix, prefix: parentSettings.classPrefix + '-' + widgetName, preventScroll: parentSettings.classPrefix + '-prevent-scroll', }, selectors: { preventClose: '.' + parentSettings.classPrefix + '-prevent-close', }, container: 'body', preventScroll: false, iframe: null, closeButton: false, closeButtonOptions: { iconClass: parentSettings.classPrefix + '-close-button-icon', attributes: { role: 'button', 'tabindex': 0, 'aria-label': 'Close', href: '#', }, iconElement: '', }, position: { element: 'widget', my: 'center', at: 'center', enable: true, autoRefresh: false, }, hide: { auto: false, autoDelay: 5000, onClick: false, onOutsideClick: true, onOutsideContextMenu: false, onBackgroundClick: true, onEscKeyPress: true, ignore: '', }, }; $.extend(true, settings, self.getDefaultSettings(), userSettings); initSettingsEvents(); }; var initSettingsEvents = function() { $.each(settings, function(settingKey) { var eventName = settingKey.match(/^on([A-Z].*)/); if (!eventName) { return; } eventName = eventName[1].charAt(0).toLowerCase() + eventName[1].slice(1); self.on(eventName, this); }); }; var isContextMenuClickEvent = function(event) { // Firefox fires `click` event on every `contextmenu` event. return event.type === 'click' && event.button === 2; }; var normalizeClassName = function(name) { return name.replace(/([a-z])([A-Z])/g, function() { return arguments[1] + '-' + arguments[2].toLowerCase(); }); }; var onWindowKeyUp = function(event) { var ESC_KEY = 27, keyCode = event.which; if (ESC_KEY === keyCode) { self.hide(); } }; var unbindEvents = function() { var windows = [elements.window]; if (elements.iframe) { windows.push(jQuery(elements.iframe[0].contentWindow)); } windows.forEach(function(window) { if (settings.hide.onEscKeyPress) { window.off('keyup', onWindowKeyUp); } if (settings.hide.onOutsideClick) { window[0].removeEventListener('click', hideOnOutsideClick, true); } if (settings.hide.onOutsideContextMenu) { window[0].removeEventListener('contextmenu', hideOnOutsideClick, true); } if (settings.position.autoRefresh) { window.off('resize', self.refreshPosition); } }); if (settings.hide.onClick || settings.hide.onBackgroundClick) { elements.widget.off('click', hideOnClick); } }; this.addElement = function(name, element, classes) { var $newElement = elements[name] = $(element || '
'), normalizedName = normalizeClassName(name); classes = classes ? classes + ' ' : ''; classes += settings.classes.globalPrefix + '-' + normalizedName; classes += ' ' + settings.classes.prefix + '-' + normalizedName; $newElement.addClass(classes); return $newElement; }; this.destroy = function() { unbindEvents(); elements.widget.remove(); self.trigger('destroy'); return self; }; this.getElements = function(item) { return item ? elements[item] : elements; }; this.getSettings = function(setting) { var copy = Object.create(settings); if (setting) { return copy[setting]; } return copy; }; this.hide = function() { if (! self.isVisible()) { return; } clearTimeout(hideTimeOut); callEffect('hide', arguments); unbindEvents(); if (settings.preventScroll) { self.getElements('body').removeClass(settings.classes.preventScroll); } self.trigger('hide'); return self; }; this.init = function(parent, properties) { if (!(parent instanceof DialogsManager.Instance)) { throw 'The ' + self.widgetName + ' must to be initialized from an instance of DialogsManager.Instance'; } ensureClosureMethods(); self.trigger('init', properties); initSettings(parent, properties); initElements(); self.buildWidget(); self.attachEvents(); self.trigger('ready'); return self; }; this.isVisible = function() { return elements.widget.is(':visible'); }; this.on = function(eventName, callback) { if ('object' === typeof eventName) { $.each(eventName, function(singleEventName) { self.on(singleEventName, this); }); return self; } var eventNames = eventName.split(' '); eventNames.forEach(function(singleEventName) { if (!events[singleEventName]) { events[singleEventName] = []; } events[singleEventName].push(callback); }); return self; }; this.off = function(eventName, callback) { if (! events[ eventName ]) { return self; } if (! callback) { delete events[eventName]; return self; } var callbackIndex = events[eventName].indexOf(callback); if (-1 !== callbackIndex) { events[eventName].splice(callbackIndex, 1); } return self; }; this.refreshPosition = function() { if (! settings.position.enable) { return; } var position = $.extend({}, settings.position); if (elements[position.of]) { position.of = elements[position.of]; } if (! position.of) { position.of = window; } if (settings.iframe) { fixIframePosition(position); } elements[position.element].position(position); }; this.setID = function(id) { elements.widget.attr('id', id); return self; }; this.setHeaderMessage = function(message) { self.getElements('header').html(message); return self; }; this.setMessage = function(message) { elements.message.html(message); return self; }; this.setSettings = function(key, value) { if (jQuery.isPlainObject(value)) { $.extend(true, settings[key], value); } else { settings[key] = value; } return self; }; this.show = function() { clearTimeout(hideTimeOut); elements.widget.appendTo(elements.container).hide(); callEffect('show', arguments); self.refreshPosition(); if (settings.hide.auto) { hideTimeOut = setTimeout(self.hide, settings.hide.autoDelay); } bindEvents(); if (settings.preventScroll) { self.getElements('body').addClass(settings.classes.preventScroll); } self.trigger('show'); return self; }; this.trigger = function(eventName, params) { var methodName = 'on' + eventName[0].toUpperCase() + eventName.slice(1); if (self[methodName]) { self[methodName](params); } var callbacks = events[eventName]; if (!callbacks) { return; } $.each(callbacks, function(index, callback) { callback.call(self, params); }); return self; }; }; DialogsManager.Widget.prototype.types = []; // Inheritable widget methods DialogsManager.Widget.prototype.buildWidget = function() { var elements = this.getElements(), settings = this.getSettings(); elements.widget.append(elements.header, elements.message); this.setHeaderMessage(settings.headerMessage); this.setMessage(settings.message); if (this.getSettings('closeButton')) { elements.widget.prepend(elements.closeButton); } }; DialogsManager.Widget.prototype.attachEvents = function() { var self = this; if (self.getSettings('closeButton')) { self.getElements('closeButton').on('click', function(event) { event.preventDefault(); self.hide(); }); } }; DialogsManager.Widget.prototype.getDefaultSettings = function() { return {}; }; DialogsManager.Widget.prototype.getClosureMethods = function() { return []; }; DialogsManager.Widget.prototype.onHide = function() { }; DialogsManager.Widget.prototype.onShow = function() { }; DialogsManager.Widget.prototype.onInit = function() { }; DialogsManager.Widget.prototype.onReady = function() { }; DialogsManager.widgetsTypes.simple = DialogsManager.Widget; DialogsManager.addWidgetType('buttons', { activeKeyUp: function(event) { var TAB_KEY = 9; if (event.which === TAB_KEY) { event.preventDefault(); } if (this.hotKeys[event.which]) { this.hotKeys[event.which](this); } }, activeKeyDown: function(event) { if (!this.focusedButton) { return; } var TAB_KEY = 9; if (event.which === TAB_KEY) { event.preventDefault(); var currentButtonIndex = this.focusedButton.index(), nextButtonIndex; if (event.shiftKey) { nextButtonIndex = currentButtonIndex - 1; if (nextButtonIndex < 0) { nextButtonIndex = this.buttons.length - 1; } } else { nextButtonIndex = currentButtonIndex + 1; if (nextButtonIndex >= this.buttons.length) { nextButtonIndex = 0; } } this.focusedButton = this.buttons[nextButtonIndex].trigger('focus'); } }, addButton: function(options) { var self = this, settings = self.getSettings(), buttonSettings = jQuery.extend(settings.button, options); var classes = options.classes ? options.classes + ' ' : ''; classes += settings.classes.globalPrefix + '-button'; var $button = self.addElement(options.name, $('<' + buttonSettings.tag + '>').html(options.text), classes); self.buttons.push($button); var buttonFn = function() { if (settings.hide.onButtonClick) { self.hide(); } if ('function' === typeof options.callback) { options.callback.call(this, self); } }; $button.on('click', buttonFn); if (options.hotKey) { this.hotKeys[options.hotKey] = buttonFn; } this.getElements('buttonsWrapper').append($button); if (options.focus) { this.focusedButton = $button; } return self; }, bindHotKeys: function() { this.getElements('window').on({ keyup: this.activeKeyUp, keydown: this.activeKeyDown }); }, buildWidget: function() { DialogsManager.Widget.prototype.buildWidget.apply(this, arguments); var $buttonsWrapper = this.addElement('buttonsWrapper'); this.getElements('widget').append($buttonsWrapper); }, getClosureMethods: function() { return [ 'activeKeyUp', 'activeKeyDown' ]; }, getDefaultSettings: function() { return { hide: { onButtonClick: true }, button: { tag: 'button' } }; }, onHide: function() { this.unbindHotKeys(); }, onInit: function() { this.buttons = []; this.hotKeys = {}; this.focusedButton = null; }, onShow: function() { this.bindHotKeys(); if (!this.focusedButton) { this.focusedButton = this.buttons[0]; } if (this.focusedButton) { this.focusedButton.trigger('focus'); } }, unbindHotKeys: function() { this.getElements('window').off({ keyup: this.activeKeyUp, keydown: this.activeKeyDown }); } }); DialogsManager.addWidgetType('lightbox', DialogsManager.getWidgetType('buttons').extend('lightbox', { getDefaultSettings: function() { var settings = DialogsManager.getWidgetType('buttons').prototype.getDefaultSettings.apply(this, arguments); return $.extend(true, settings, { contentWidth: 'auto', contentHeight: 'auto', position: { element: 'widgetContent', of: 'widget', autoRefresh: true } }); }, buildWidget: function() { DialogsManager.getWidgetType('buttons').prototype.buildWidget.apply(this, arguments); var $widgetContent = this.addElement('widgetContent'), elements = this.getElements(); $widgetContent.append(elements.header, elements.message, elements.buttonsWrapper); elements.widget.html($widgetContent); if (elements.closeButton) { $widgetContent.prepend(elements.closeButton); } }, onReady: function() { var elements = this.getElements(), settings = this.getSettings(); if ('auto' !== settings.contentWidth) { elements.message.width(settings.contentWidth); } if ('auto' !== settings.contentHeight) { elements.message.height(settings.contentHeight); } } })); DialogsManager.addWidgetType('confirm', DialogsManager.getWidgetType('lightbox').extend('confirm', { onReady: function() { DialogsManager.getWidgetType('lightbox').prototype.onReady.apply(this, arguments); var strings = this.getSettings('strings'), isDefaultCancel = this.getSettings('defaultOption') === 'cancel'; this.addButton({ name: 'cancel', text: strings.cancel, callback: function(widget) { widget.trigger('cancel'); }, focus: isDefaultCancel }); this.addButton({ name: 'ok', text: strings.confirm, callback: function(widget) { widget.trigger('confirm'); }, focus: !isDefaultCancel }); }, getDefaultSettings: function() { var settings = DialogsManager.getWidgetType('lightbox').prototype.getDefaultSettings.apply(this, arguments); settings.strings = { confirm: 'OK', cancel: 'Cancel' }; settings.defaultOption = 'cancel'; return settings; } })); DialogsManager.addWidgetType('alert', DialogsManager.getWidgetType('lightbox').extend('alert', { onReady: function() { DialogsManager.getWidgetType('lightbox').prototype.onReady.apply(this, arguments); var strings = this.getSettings('strings'); this.addButton({ name: 'ok', text: strings.confirm, callback: function(widget) { widget.trigger('confirm'); } }); }, getDefaultSettings: function() { var settings = DialogsManager.getWidgetType('lightbox').prototype.getDefaultSettings.apply(this, arguments); settings.strings = { confirm: 'OK' }; return settings; } })); // Exporting the DialogsManager variable to global global.DialogsManager = DialogsManager; })( typeof jQuery !== 'undefined' ? jQuery : typeof require === 'function' && require('jquery'), (typeof module !== 'undefined' && typeof module.exports !== 'undefined') ? module.exports : window ); Deep Impact's Sci-Fi Premise Was More Science Than Fiction

Deep Impact’s Sci-Fi Premise Was More Science Than Fiction

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Multiple astronomers were hired to serve as consultants on “Deep Impact,” employed to assure the comet science would be as accurate as possible. The team included Gene Shoemaker — the co-discoverer of the Shoemaker-Levy 9 comet — astronaut David Walker, Chris Luchini, and Joshua Colwell, a physics professor at the University of Central Florida. Colwell noted that: 

“It’s not hard to be more scientifically accurate than most sci-fi movies. […] [The] director, producers, and writers made a decision to make the movie as realistic as possible while staying true to the story they were telling. […] The movie depicts both an attempt to deflect the comet and also the creation of a subterranean ‘ark’ to house a large number of people to survive the catastrophic and long-lasting effects of the impact. […] Both of these activities are plausible, but both require huge resources and a lot of time to put together.”

Colwell and the other advisors also made sure the surface of the comet looked correct, and that it was a scientifically accurate size; in the case of the movie, it was seven miles across. They also wanted to make sure that the strike looked like an actual comet strike might, posited what would happen to Earth’s oceans (there is a massive, city-swallowing tidal wave), and were careful to show that any astronauts who visited a comet would still be weightless while close to its surface. 

For the record, any heavenly body with gravity would necessarily, thanks to a process called isostatic adjustment, be spherical. The smallest spherical body with its own gravity in the solar system is Mimas, the seventh-largest moon of Saturn, which is about 246 miles in diameter. Meanwhile, the largest comet known is C/2014 UN271, which is only about 1.2 miles in diameter.

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