\\\n \\\n \\\n
\"\n );\n}\nfunction getActiveExercise() {\n return (active = codeExercises.filter(\".active\"));\n}\n\nfunction activateExercise(index) {\n if (typeof index == \"undefined\") {\n index = 0;\n }\n\n let active = getActiveExercise();\n\n if (codeExercises.length) {\n active.removeClass(\"active\");\n active = $(codeExercises[index]).addClass(\"active\");\n active.removeClass(\"hidden\");\n codeExercises.not(codeExercises.filter(\".active\")).addClass(\"hidden\");\n }\n}\n\nwindow.nextExercise = function() {\n let active = getActiveExercise();\n let nextIndex = codeExercises.index(active) + 1;\n if (nextIndex < codeExercises.length) {\n activateExercise(nextIndex);\n }\n}\n\nwindow.prevExercise = function() {\n let active = getActiveExercise();\n let prevIndex = codeExercises.index(active) - 1;\n if (prevIndex >= 0) {\n activateExercise(prevIndex);\n }\n}\n\nfunction configure() {\n let rightNav = $(\".navbar-right\");\n rightNav.prepend(\n \" Example \" +\n (Number(index) + 1) +\n \"
Sorry, no source is available for preview.
`\n );\n return;\n }\n let patt = /..\\/_images/g;\n componentSrc = componentSrc.replace(\n patt,\n `${eBookConfig.app}/books/published/${eBookConfig.basecourse}/_images`\n );\n jQuery(`#${whereDiv}`).html(componentSrc);\n\n if (typeof window.componentMap === \"undefined\") {\n window.componentMap = {};\n }\n\n let componentKind = $($(`#${whereDiv} [data-component]`)[0]).data(\n \"component\"\n );\n // Import the JavaScript for this component before proceeding.\n await runestone_import(componentKind);\n let opt = {};\n opt.orig = jQuery(`#${whereDiv} [data-component]`)[0];\n if (opt.orig) {\n opt.lang = $(opt.orig).data(\"lang\");\n opt.useRunestoneServices = true;\n opt.graderactive = false;\n opt.python3 = true;\n if (typeof moreOpts !== \"undefined\") {\n for (let key in moreOpts) {\n opt[key] = moreOpts[key];\n }\n }\n }\n\n if (typeof component_factory === \"undefined\") {\n alert(\"Error: Missing the component factory!\");\n } else {\n if (\n !window.component_factory[componentKind] &&\n !jQuery(`#${whereDiv}`).html()\n ) {\n jQuery(`#${whereDiv}`).html(\n `Preview not available for ${componentKind}
`\n );\n } else {\n let res = window.component_factory[componentKind](opt);\n if (componentKind === \"activecode\") {\n if (moreOpts.multiGrader) {\n window.componentMap[\n `${moreOpts.gradingContainer} ${res.divid}`\n ] = res;\n } else {\n window.componentMap[res.divid] = res;\n }\n }\n }\n }\n}\n\nexport function createTimedComponent(componentSrc, moreOpts) {\n /* The important distinction is that the component does not really need to be rendered\n into the page, in fact, due to the async nature of getting the source the list of questions\n is made and the original html is replaced by the look of the exam.\n */\n\n let patt = /..\\/_images/g;\n componentSrc = componentSrc.replace(\n patt,\n `${eBookConfig.app}/books/published/${eBookConfig.basecourse}/_images`\n );\n\n let componentKind = $($(componentSrc).find(\"[data-component]\")[0]).data(\n \"component\"\n );\n\n let origId = $(componentSrc).find(\"[data-component]\").first().attr(\"id\");\n\n // Double check -- if the component source is not in the DOM, then briefly add it\n // and call the constructor.\n let hdiv;\n if (!document.getElementById(origId)) {\n hdiv = $(\"\", {\n css: { display: \"none\" },\n }).appendTo(\"body\");\n hdiv.html(componentSrc);\n }\n // at this point hdiv is a jquery object\n\n let ret;\n let opts = {\n orig: document.getElementById(origId),\n timed: true,\n };\n if (typeof moreOpts !== \"undefined\") {\n for (let key in moreOpts) {\n opts[key] = moreOpts[key];\n }\n }\n\n if (componentKind in window.component_factory) {\n ret = window.component_factory[componentKind](opts);\n }\n\n let rdict = {};\n rdict.question = ret;\n return rdict;\n}\n\n// For integration with the React overhault of Pretext\n// 1. Disable the automatic instantiation at the end of each component.js\n// 2. react will search for all \".runestone\" and will call this function for each of them.\nexport async function renderOneComponent(rsDiv) {\n // Find the actual component inside the runestone component.\n let component = rsDiv.querySelector(\"[data-component]\");\n if (component == null) {\n console.log(\"Render was called for a component, but now [data-component] attribute is present. This may mean the component has already been rendered.\")\n return;\n }\n let componentKind = component.dataset.component;\n await runestone_import(componentKind);\n if ($(this).closest(\"[data-component=timedAssessment]\").length == 0) {\n // If this element exists within a timed component, don't render it here\n try {\n let divid = component.id;\n window.componentMap[divid] = window.component_factory[\n componentKind\n ]({\n orig: component,\n useRunestoneServices: eBookConfig.useRunestoneServices,\n });\n } catch (err) {\n console.log(`Error rendering ${componentKind} Problem ${this.id}\n Details: ${err}`);\n }\n }\n}\n","/* ********************************\n * |docname| - Runestone Base Class\n * ********************************\n * All runestone components should inherit from RunestoneBase. In addition all runestone components should do the following things:\n *\n * 1. Ensure that they are wrapped in a div with the class runestone\n * 2. Write their source AND their generated html to the database if the database is configured\n * 3. Properly save and restore their answers using the checkServer mechanism in this base class. Each component must provide an implementation of:\n *\n * - checkLocalStorage\n * - setLocalStorage\n * - restoreAnswers\n * - disableInteraction\n *\n * 4. provide a Selenium based unit test\n */\n\nimport { pageProgressTracker } from \"./bookfuncs.js\";\n//import \"./../styles/runestone-custom-sphinx-bootstrap.css\";\n\nexport default class RunestoneBase {\n constructor(opts) {\n this.component_ready_promise = new Promise(\n (resolve) => (this._component_ready_resolve_fn = resolve)\n );\n this.optional = false;\n if (typeof window.allComponents === \"undefined\") {\n window.allComponents = [];\n }\n window.allComponents.push(this);\n if (opts) {\n this.sid = opts.sid;\n this.graderactive = opts.graderactive;\n this.showfeedback = true;\n if (opts.timed) {\n this.isTimed = true;\n }\n if (opts.enforceDeadline) {\n this.deadline = opts.deadline;\n }\n if ($(opts.orig).data(\"optional\")) {\n this.optional = true;\n } else {\n this.optional = false;\n }\n if (opts.selector_id) {\n this.selector_id = opts.selector_id;\n }\n if (typeof opts.assessmentTaken !== \"undefined\") {\n this.assessmentTaken = opts.assessmentTaken;\n } else {\n // default to true as this opt is only provided from a timedAssessment\n this.assessmentTaken = true;\n }\n // This is for the selectquestion points\n // If a selectquestion is part of a timed exam it will get\n // the timedWrapper options.\n if (typeof opts.timedWrapper !== \"undefined\") {\n this.timedWrapper = opts.timedWrapper;\n } else {\n // However sometimes selectquestions\n // are used in regular assignments. The hacky way to detect this\n // is to look for doAssignment in the URL and then grab\n // the assignment name from the heading.\n if (location.href.indexOf(\"doAssignment\") >= 0) {\n this.timedWrapper = $(\"h1#assignment_name\").text();\n } else {\n this.timedWrapper = null;\n }\n }\n if ($(opts.orig).data(\"question_label\")) {\n this.question_label = $(opts.orig).data(\"question_label\");\n }\n this.is_toggle = true ? opts.is_toggle : false;\n this.is_select = true ? opts.is_select : false;\n\n }\n this.mjelements = [];\n let self = this;\n this.mjReady = new Promise(function(resolve, reject) {\n self.mjresolver = resolve;\n });\n this.aQueue = new AutoQueue();\n this.jsonHeaders = new Headers({\n \"Content-type\": \"application/json; charset=utf-8\",\n Accept: \"application/json\",\n });\n }\n\n // _`logBookEvent`\n //----------------\n // This function sends the provided ``eventInfo`` to the `hsblog endpoint` of the server. Awaiting this function returns either ``undefined`` (if Runestone services are not available) or the data returned by the server as a JavaScript object (already JSON-decoded).\n async logBookEvent(eventInfo) {\n if (this.graderactive) {\n return;\n }\n let post_return;\n eventInfo.course_name = eBookConfig.course;\n eventInfo.clientLoginStatus = eBookConfig.isLoggedIn;\n eventInfo.timezoneoffset = new Date().getTimezoneOffset() / 60;\n if (typeof(this.percent) === \"number\") {\n eventInfo.percent = this.percent;\n }\n if (\n eBookConfig.isLoggedIn &&\n eBookConfig.useRunestoneServices &&\n eBookConfig.logLevel > 0\n ) {\n post_return = this.postLogMessage(eventInfo);\n }\n if (!this.isTimed || eBookConfig.debug) {\n let prefix = eBookConfig.isLoggedIn ? \"Save\" : \"Not\";\n console.log(`${prefix} logging event ` + JSON.stringify(eventInfo));\n }\n // When selectquestions are part of an assignment especially toggle questions\n // we need to count using the selector_id of the select question.\n // We also need to log an event for that selector so that we will know\n // that interaction has taken place. This is **independent** of how the\n // autograder will ultimately grade the question!\n if (this.selector_id) {\n eventInfo.div_id = this.selector_id.replace(\n \"-toggleSelectedQuestion\",\n \"\"\n );\n eventInfo.event = \"selectquestion\";\n eventInfo.act = \"interaction\";\n this.postLogMessage(eventInfo);\n }\n if (\n typeof pageProgressTracker.updateProgress === \"function\" &&\n eventInfo.act != \"edit\" &&\n this.optional == false\n ) {\n pageProgressTracker.updateProgress(eventInfo.div_id);\n }\n return post_return;\n }\n\n async postLogMessage(eventInfo) {\n var post_return;\n let request = new Request(\n `${eBookConfig.new_server_prefix}/logger/bookevent`, {\n method: \"POST\",\n headers: this.jsonHeaders,\n body: JSON.stringify(eventInfo),\n }\n );\n try {\n var response = await fetch(request);\n if (!response.ok) {\n if (response.status === 422) {\n // Get details about why this is unprocesable.\n post_return = await response.json();\n console.log(post_return.detail);\n throw new Error(\"Unprocessable Request\");\n } else if (response.status == 401) {\n post_return = await response.json();\n console.log(\n `Missing authentication token ${post_return.detail}`\n );\n throw new Error(\"Missing authentication token\");\n }\n throw new Error(`Failed to save the log entry\n Status: ${response.status}`);\n }\n post_return = await response.json();\n } catch (e) {\n let detail = \"none\";\n if (post_return && post_return.detail) {\n detail = post_return.detail;\n }\n if (eBookConfig.loginRequired) {\n alert(`Error: Your action was not saved!\n The error was ${e}\n Status Code: ${response.status}\n Detail: ${detail}.\n Please report this error!`);\n }\n // send a request to save this error\n console.log(`Error: ${e} Detail: ${detail} Status Code: ${response.status}`);\n }\n return post_return;\n }\n // .. _logRunEvent:\n //\n // logRunEvent\n // -----------\n // This function sends the provided ``eventInfo`` to the `runlog endpoint`. When awaited, this function returns the data (decoded from JSON) the server sent back.\n async logRunEvent(eventInfo) {\n let post_promise = \"done\";\n if (this.graderactive) {\n return;\n }\n eventInfo.course = eBookConfig.course;\n eventInfo.clientLoginStatus = eBookConfig.isLoggedIn;\n eventInfo.timezoneoffset = new Date().getTimezoneOffset() / 60;\n if (this.forceSave || \"to_save\" in eventInfo === false) {\n eventInfo.save_code = \"True\";\n }\n if (\n eBookConfig.isLoggedIn &&\n eBookConfig.useRunestoneServices &&\n eBookConfig.logLevel > 0\n ) {\n let request = new Request(\n `${eBookConfig.new_server_prefix}/logger/runlog`, {\n method: \"POST\",\n headers: this.jsonHeaders,\n body: JSON.stringify(eventInfo),\n }\n );\n let response = await fetch(request);\n if (!response.ok) {\n post_promise = await response.json();\n if (eBookConfig.loginRequired) {\n alert(`Failed to save your code\n Status is ${response.status}\n Detail: ${post_promise.detail}`);\n } else {\n console.log(\n `Did not save the code. Status: ${response.status}`\n );\n }\n } else {\n post_promise = await response.json();\n }\n }\n if (!this.isTimed || eBookConfig.debug) {\n console.log(\"running \" + JSON.stringify(eventInfo));\n }\n if (\n typeof pageProgressTracker.updateProgress === \"function\" &&\n this.optional == false\n ) {\n pageProgressTracker.updateProgress(eventInfo.div_id);\n }\n return post_promise;\n }\n /* Checking/loading from storage\n **WARNING:** DO NOT `await` this function!\n This function, although async, does not explicitly resolve its promise by returning a value. The reason for this is because it is called by the constructor for nearly every component. In Javascript constructors cannot be async!\n\n One of the recommended ways to handle the async requirements from within a constructor is to use an attribute as a promise and resolve that attribute at the appropriate time.\n */\n async checkServer(\n // A string specifying the event name to use for querying the :ref:`getAssessResults` endpoint.\n eventInfo,\n // If true, this function will invoke ``indicate_component_ready()`` just before it returns. This is provided since most components are ready after this function completes its work.\n //\n // TODO: This defaults to false, to avoid causing problems with any components that haven't been updated and tested. After all Runestone components have been updated, default this to true and remove the extra parameter from most calls to this function.\n will_be_ready = false\n ) {\n // Check if the server has stored answer\n let self = this;\n this.checkServerComplete = new Promise(function(resolve, reject) {\n self.csresolver = resolve;\n });\n if (\n eBookConfig.isLoggedIn &&\n (this.useRunestoneServices || this.graderactive)\n ) {\n let data = {};\n data.div_id = this.divid;\n data.course = eBookConfig.course;\n data.event = eventInfo;\n if (this.graderactive && this.deadline) {\n data.deadline = this.deadline;\n data.rawdeadline = this.rawdeadline;\n data.tzoff = this.tzoff;\n }\n if (this.sid) {\n data.sid = this.sid;\n }\n if (!(data.div_id && data.course && data.event)) {\n console.log(\n `A required field is missing data ${data.div_id}:${data.course}:${data.event}`\n );\n }\n // If we are NOT in practice mode and we are not in a peer exercise\n // and assessmentTaken is true\n if (\n !eBookConfig.practice_mode &&\n !eBookConfig.peer &&\n this.assessmentTaken\n ) {\n let request = new Request(\n `${eBookConfig.new_server_prefix}/assessment/results`, {\n method: \"POST\",\n body: JSON.stringify(data),\n headers: this.jsonHeaders,\n }\n );\n try {\n let response = await fetch(request);\n if (response.ok) {\n data = await response.json();\n data = data.detail;\n this.repopulateFromStorage(data);\n this.attempted = true;\n if (typeof(data.correct) !== \"undefined\") {\n this.correct = data.correct;\n } else {\n this.correct = null;\n }\n this.csresolver(\"server\");\n } else {\n console.log(\n `HTTP Error getting results: ${response.statusText}`\n );\n this.checkLocalStorage(); // just go right to local storage\n this.csresolver(\"local\");\n }\n } catch (err) {\n console.log(`Error getting results: ${err}`)\n try {\n this.checkLocalStorage();\n } catch (err) {\n console.log(err);\n }\n }\n } else {\n this.loadData({});\n this.csresolver(\"not taken\");\n }\n } else {\n this.checkLocalStorage(); // just go right to local storage\n this.csresolver(\"local\");\n }\n\n if (will_be_ready) {\n this.indicate_component_ready();\n }\n }\n\n // This method assumes that ``this.componentDiv`` refers to the ``div`` containing the component, and that this component's ID is set.\n indicate_component_ready() {\n // Add a class to indicate the component is now ready.\n this.containerDiv.classList.add(\"runestone-component-ready\");\n // Resolve the ``this.component_ready_promise``.\n this._component_ready_resolve_fn();\n }\n\n loadData(data) {\n // for most classes, loadData doesn't do anything. But for Parsons, and perhaps others in the future,\n // initialization can happen even when there's no history to be loaded\n return null;\n }\n\n /**\n * repopulateFromStorage is called after a successful API call is made to ``getAssessResults`` in\n * the checkServer method in this class\n *\n * ``restoreAnswers,`` ``setLocalStorage`` and ``checkLocalStorage`` are defined in the child classes.\n *\n * @param {*} data - a JSON object representing the data needed to restore a previous answer for a component\n * @param {*} status - the http status\n * @param {*} whatever - ignored\n */\n repopulateFromStorage(data) {\n // decide whether to use the server's answer (if there is one) or to load from storage\n if (data !== null && data !== \"no data\" && this.shouldUseServer(data)) {\n this.restoreAnswers(data);\n this.setLocalStorage(data);\n } else {\n this.checkLocalStorage();\n }\n }\n shouldUseServer(data) {\n // returns true if server data is more recent than local storage or if server storage is correct\n if (\n data.correct === \"T\" ||\n data.correct === true ||\n localStorage.length === 0 ||\n this.graderactive === true ||\n this.isTimed\n ) {\n return true;\n }\n let ex = localStorage.getItem(this.localStorageKey());\n if (ex === null) {\n return true;\n }\n let storedData;\n try {\n storedData = JSON.parse(ex);\n } catch (err) {\n // error while parsing; likely due to bad value stored in storage\n console.log(err.message);\n localStorage.removeItem(this.localStorageKey());\n // definitely don't want to use local storage here\n return true;\n }\n if (data.answer == storedData.answer) return true;\n let storageDate = new Date(storedData.timestamp);\n let serverDate = new Date(data.timestamp);\n return serverDate >= storageDate;\n }\n // Return the key which to be used when accessing local storage.\n localStorageKey() {\n return (\n eBookConfig.email +\n \":\" +\n eBookConfig.course +\n \":\" +\n this.divid +\n \"-given\"\n );\n }\n addCaption(elType) {\n //someElement.parentNode.insertBefore(newElement, someElement.nextSibling);\n if (!this.isTimed) {\n var capDiv = document.createElement(\"p\");\n if (this.question_label) {\n this.caption = `Activity: ${this.question_label} ${this.caption} (${this.divid})`;\n $(capDiv).html(this.caption);\n $(capDiv).addClass(`${elType}_caption`);\n } else {\n $(capDiv).html(this.caption + \" (\" + this.divid + \")\");\n $(capDiv).addClass(`${elType}_caption`);\n $(capDiv).addClass(`${elType}_caption_text`);\n }\n this.capDiv = capDiv;\n //this.outerDiv.parentNode.insertBefore(capDiv, this.outerDiv.nextSibling);\n this.containerDiv.appendChild(capDiv);\n }\n }\n\n hasUserActivity() {\n return this.isAnswered;\n }\n\n checkCurrentAnswer() {\n console.log(\n \"Each component should provide an implementation of checkCurrentAnswer\"\n );\n }\n\n async logCurrentAnswer() {\n console.log(\n \"Each component should provide an implementation of logCurrentAnswer\"\n );\n }\n renderFeedback() {\n console.log(\n \"Each component should provide an implementation of renderFeedback\"\n );\n }\n disableInteraction() {\n console.log(\n \"Each component should provide an implementation of disableInteraction\"\n );\n }\n\n toString() {\n return `${this.constructor.name}: ${this.divid}`;\n }\n\n queueMathJax(component) {\n if (typeof(MathJax) === \"undefined\") {\n console.log(\"Error -- MathJax is not loaded\")\n return Promise.resolve(null);\n } else {\n // See - https://docs.mathjax.org/en/latest/advanced/typeset.html\n // Per the above we should keep track of the promises and only call this\n // a second time if all previous promises have resolved.\n // Create a queue of components\n // should wait until defaultPageReady is defined\n // If defaultPageReady is not defined then just enqueue the components.\n // Once defaultPageReady is defined\n // the window.runestoneMathReady promise will be fulfilled when the\n // initial typesetting is complete.\n if (MathJax.typesetPromise) {\n if (typeof(window.runestoneMathReady) !== \"undefined\") {\n return window.runestoneMathReady.then(\n () => this.mjresolver(this.aQueue.enqueue(component))\n )\n } else {\n return this.mjresolver(this.aQueue.enqueue(component))\n }\n } else {\n console.log(`Waiting on MathJax!! ${MathJax.typesetPromise}`);\n setTimeout(() => this.queueMathJax(component), 200);\n console.log(`Returning mjready promise: ${this.mjReady}`)\n return this.mjReady;\n }\n }\n }\n\n decorateStatus() {\n let rsDiv = $(this.containerDiv).closest(\"div.runestone\")[0];\n if (this.correct) {\n rsDiv.classList.add(\"isCorrect\");\n } else {\n if (this.correct === null) {\n rsDiv.classList.add(\"notAnswered\");\n } else {\n rsDiv.classList.add(\"isInCorrect\");\n }\n }\n }\n\n}\n\n\n// Inspiration and lots of code for this solution come from\n// https://stackoverflow.com/questions/53540348/js-async-await-tasks-queue\n// The idea here is that until MathJax is ready we can just enqueue things\n// once mathjax becomes ready then we can drain the queue and continue as usual.\n\nclass Queue {\n constructor() { this._items = []; }\n enqueue(item) { this._items.push(item); }\n dequeue() { return this._items.shift(); }\n get size() { return this._items.length; }\n}\n\nclass AutoQueue extends Queue {\n constructor() {\n super();\n this._pendingPromise = false;\n }\n\n enqueue(component) {\n return new Promise((resolve, reject) => {\n super.enqueue({ component, resolve, reject });\n this.dequeue();\n });\n }\n\n async dequeue() {\n if (this._pendingPromise) return false;\n\n let item = super.dequeue();\n\n if (!item) return false;\n\n try {\n this._pendingPromise = true;\n\n let payload = await MathJax.startup.defaultPageReady().then(\n async function() {\n console.log(`MathJax Ready -- dequeing a typesetting run for ${item.component.id}`)\n return await MathJax.typesetPromise([item.component])\n }\n );\n\n this._pendingPromise = false; item.resolve(payload);\n }\n catch (e) {\n this._pendingPromise = false;\n item.reject(e);\n } finally {\n this.dequeue();\n }\n\n return true;\n }\n }\n\n\n window.RunestoneBase = RunestoneBase;\n","(function ($) {\n /**\n * Patch TOC list.\n *\n * Will mutate the underlying span to have a correct ul for nav.\n *\n * @param $span: Span containing nested UL's to mutate.\n * @param minLevel: Starting level for nested lists. (1: global, 2: local).\n */\n var patchToc = function ($ul, minLevel) {\n var findA,\n patchTables,\n $localLi;\n\n // Find all a \"internal\" tags, traversing recursively.\n findA = function ($elem, level) {\n level = level || 0;\n var $items = $elem.find(\"> li > a.internal, > ul, > li > ul\");\n\n // Iterate everything in order.\n $items.each(function (index, item) {\n var $item = $(item),\n tag = item.tagName.toLowerCase(),\n $childrenLi = $item.children('li'),\n $parentLi = $($item.parent('li'), $item.parent().parent('li'));\n\n // Add dropdowns if more children and above minimum level.\n if (tag === 'ul' && level >= minLevel && $childrenLi.length > 0) {\n $parentLi\n .addClass('dropdown-submenu')\n .children('a').first().attr('tabindex', -1);\n\n $item.addClass('dropdown-menu');\n }\n\n findA($item, level + 1);\n });\n };\n\n findA($ul);\n };\n\n /**\n * Patch all tables to remove ``docutils`` class and add Bootstrap base\n * ``table`` class.\n */\n patchTables = function () {\n $(\"table.docutils\")\n .removeClass(\"docutils\")\n .addClass(\"table\")\n .attr(\"border\", 0);\n };\n\n$(function () {\n\n /*\n * Scroll the window to avoid the topnav bar\n * https://github.com/twitter/bootstrap/issues/1768\n */\n if ($(\"#navbar.navbar-fixed-top\").length > 0) {\n var navHeight = $(\"#navbar\").height(),\n shiftWindow = function() { scrollBy(0, -navHeight - 10); };\n\n if (location.hash) {\n shiftWindow();\n }\n\n window.addEventListener(\"hashchange\", shiftWindow);\n }\n\n // Add styling, structure to TOC's.\n $(\".dropdown-menu\").each(function () {\n $(this).find(\"ul\").each(function (index, item){\n var $item = $(item);\n $item.addClass('unstyled');\n });\n });\n\n // Global TOC.\n if ($(\"ul.globaltoc li\").length) {\n patchToc($(\"ul.globaltoc\"), 1);\n } else {\n // Remove Global TOC.\n $(\".globaltoc-container\").remove();\n }\n\n // Local TOC.\n patchToc($(\"ul.localtoc\"), 2);\n\n // Mutate sub-lists (for bs-2.3.0).\n $(\".dropdown-menu ul\").not(\".dropdown-menu\").each(function () {\n var $ul = $(this),\n $parent = $ul.parent(),\n tag = $parent[0].tagName.toLowerCase(),\n $kids = $ul.children().detach();\n\n // Replace list with items if submenu header.\n if (tag === \"ul\") {\n $ul.replaceWith($kids);\n } else if (tag === \"li\") {\n // Insert into previous list.\n $parent.after($kids);\n $ul.remove();\n }\n });\n\n // Add divider in page TOC.\n $localLi = $(\"ul.localtoc li\");\n if ($localLi.length > 2) {\n $localLi.first().after('');\n }\n\n // Enable dropdown.\n $('.dropdown-toggle').dropdown();\n\n // Patch tables.\n patchTables();\n\n // Add Note, Warning styles.\n $('div.note').addClass('alert').addClass('alert-info');\n $('div.warning').addClass('alert').addClass('alert-warning');\n\n // Inline code styles to Bootstrap style.\n $('tt.docutils.literal').not(\".xref\").each(function (i, e) {\n // ignore references\n if (!$(e).parent().hasClass(\"reference\")) {\n $(e).replaceWith(function () {\n return $(\"![](\"../_static/last-point.png\")
'\n );\n $(\"html, body\").animate({ scrollTop: parseInt(lastPositionVal) }, 1000);\n }\n}\n\nfunction addNavigationAndCompletionButtons() {\n if (\n window.location.href.match(\n /(index.html|genindex.html|navhelp.html|toc.html|assignments.html|Exercises.html|toctree.html)/\n )\n ) {\n return;\n }\n var navLinkBgRightHiddenPosition = -$(\"#navLinkBgRight\").outerWidth() - 5;\n var navLinkBgRightHalfOpen;\n var navLinkBgRightFullOpen = 0;\n\n if ($(\"#completionButton\").hasClass(\"buttonAskCompletion\")) {\n navLinkBgRightHalfOpen = navLinkBgRightHiddenPosition + 70;\n } else if ($(\"#completionButton\").hasClass(\"buttonConfirmCompletion\")) {\n navLinkBgRightHalfOpen = 0;\n }\n var relationsNextIconInitialPosition = $(\"#relations-next\").css(\"right\");\n var relationsNextIconNewPosition = -(navLinkBgRightHiddenPosition + 35);\n\n $(\"#navLinkBgRight\").css(\"right\", navLinkBgRightHiddenPosition).show();\n var navBgShown = false;\n $(window).scroll(function () {\n if (\n $(window).scrollTop() + $(window).height() ==\n $(document).height()\n ) {\n $(\"#navLinkBgRight\").animate(\n { right: navLinkBgRightHalfOpen },\n 200\n );\n $(\"#navLinkBgLeft\").animate({ left: \"0px\" }, 200);\n if ($(\"#completionButton\").hasClass(\"buttonConfirmCompletion\")) {\n $(\"#relations-next\").animate(\n { right: relationsNextIconNewPosition },\n 200\n );\n }\n navBgShown = true;\n } else if (navBgShown) {\n $(\"#navLinkBgRight\").animate(\n { right: navLinkBgRightHiddenPosition },\n 200\n );\n $(\"#navLinkBgLeft\").animate({ left: \"-65px\" }, 200);\n $(\"#relations-next\").animate({\n right: relationsNextIconInitialPosition,\n });\n navBgShown = false;\n }\n });\n\n var completionFlag = 0;\n if ($(\"#completionButton\").hasClass(\"buttonAskCompletion\")) {\n completionFlag = 0;\n } else {\n completionFlag = 1;\n }\n // Make sure we mark this page as visited regardless of how flakey\n // the onunload handlers become.\n processPageState(completionFlag, true, false, false);\n $(\"#completionButton\").on(\"click\", function () {\n var markingComplete = false;\n var markingIncomplete = false;\n if ($(this).hasClass(\"buttonAskCompletion\")) {\n $(this)\n .removeClass(\"buttonAskCompletion\")\n .addClass(\"buttonConfirmCompletion\")\n .html(\n \" Completed. Well Done!\"\n );\n $(\"#navLinkBgRight\").animate({ right: navLinkBgRightFullOpen });\n $(\"#relations-next\").animate({\n right: relationsNextIconNewPosition,\n });\n navLinkBgRightHalfOpen = 0;\n completionFlag = 1;\n markingComplete = true;\n } else if ($(this).hasClass(\"buttonConfirmCompletion\")) {\n $(this)\n .removeClass(\"buttonConfirmCompletion\")\n .addClass(\"buttonAskCompletion\")\n .html(\"Mark as Completed\");\n navLinkBgRightHalfOpen = navLinkBgRightHiddenPosition + 70;\n $(\"#navLinkBgRight\").animate({ right: navLinkBgRightHalfOpen });\n $(\"#relations-next\").animate({\n right: relationsNextIconInitialPosition,\n });\n completionFlag = 0;\n markingIncomplete = true;\n }\n processPageState(\n completionFlag,\n false,\n markingComplete,\n markingIncomplete\n );\n });\n\n $(window).on(\"beforeunload\", function (e) {\n if (completionFlag == 0) {\n processPageState(completionFlag, false, false, false);\n }\n });\n}\n\n// _ decorateTableOfContents\n// -------------------------\nfunction decorateTableOfContents() {\n if (\n window.location.href.toLowerCase().indexOf(\"toc.html\") != -1 ||\n window.location.href.toLowerCase().indexOf(\"index.html\") != -1 ||\n window.location.href.toLowerCase().indexOf(\"frontmatter\") != -1\n ) {\n if (!isPreTeXt()) {\n jQuery.get(\n `${eBookConfig.new_server_prefix}/logger/getAllCompletionStatus`,\n function (data) {\n var subChapterList;\n if (data != \"None\") {\n subChapterList = data.detail;\n\n var allSubChapterURLs = $(\"#main-content div li a\");\n $.each(subChapterList, function (index, item) {\n for (var s = 0; s < allSubChapterURLs.length; s++) {\n if (\n allSubChapterURLs[s].href.indexOf(\n item.chapterName +\n \"/\" +\n item.subChapterName\n ) != -1\n ) {\n if (item.completionStatus == 1) {\n $(allSubChapterURLs[s].parentElement)\n .addClass(\"completed\")\n .append(\n '- Completed this topic on ' +\n item.endDate +\n \"\"\n )\n .children()\n .first()\n .hover(\n function () {\n $(this)\n .next(\n \".infoTextCompleted\"\n )\n .show();\n },\n function () {\n $(this)\n .next(\n \".infoTextCompleted\"\n )\n .hide();\n }\n );\n } else if (item.completionStatus == 0) {\n $(allSubChapterURLs[s].parentElement)\n .addClass(\"active\")\n .append(\n 'Last read this topic on ' +\n item.endDate +\n \"\"\n )\n .children()\n .first()\n .hover(\n function () {\n $(this)\n .next(\".infoTextActive\")\n .show();\n },\n function () {\n $(this)\n .next(\".infoTextActive\")\n .hide();\n }\n );\n }\n }\n }\n });\n }\n }\n );\n }\n var data = { course: eBookConfig.course };\n jQuery.get(\n `${eBookConfig.new_server_prefix}/logger/getlastpage`,\n data,\n function (data) {\n var lastPageData;\n if (data != \"None\") {\n lastPageData = data.detail;\n if (lastPageData.lastPageChapter != null) {\n $(\"#continue-reading\")\n .show()\n .html(\n 'You were Last Reading: ' +\n lastPageData.lastPageChapter +\n (lastPageData.lastPageSubchapter\n ? \" > \" +\n lastPageData.lastPageSubchapter\n : \"\") +\n ' Continue Reading
'\n );\n }\n }\n }\n );\n }\n}\n\nfunction enableCompletions() {\n getCompletions();\n showLastPositionBanner();\n addNavigationAndCompletionButtons();\n decorateTableOfContents();\n}\n\n// call enable user highlights after login\n$(document).on(\"runestone:login\", enableCompletions);\n\nfunction isPreTeXt() {\n let ptxMarker = document.querySelector(\"body.pretext\");\n if (ptxMarker) {\n return true;\n } else {\n return false;\n }\n}\n// _ processPageState\n// -------------------------\nfunction processPageState(\n completionFlag,\n pageLoad,\n markingComplete,\n markingIncomplete\n) {\n /*Log last page visited*/\n var currentPathname = window.location.pathname;\n if (currentPathname.indexOf(\"?\") !== -1) {\n currentPathname = currentPathname.substring(\n 0,\n currentPathname.lastIndexOf(\"?\")\n );\n }\n // Is this a ptx book?\n let isPtxBook = isPreTeXt();\n var data = {\n lastPageUrl: currentPathname,\n lastPageScrollLocation: $(window).scrollTop(),\n completionFlag: completionFlag,\n pageLoad: pageLoad,\n markingComplete: markingComplete,\n markingIncomplete: markingIncomplete,\n course: eBookConfig.course,\n isPtxBook: isPtxBook,\n };\n $(document).ajaxError(function (e, jqhxr, settings, exception) {\n console.log(\"Request Failed for \" + settings.url);\n console.log(e);\n });\n jQuery.ajax({\n url: `${eBookConfig.new_server_prefix}/logger/updatelastpage`,\n contentType: \"application/json; charset=utf-8\",\n dataType: \"json\",\n data: JSON.stringify(data),\n method: \"POST\",\n async: true,\n });\n}\n\n$.extend({\n getUrlVars: function () {\n var vars = [],\n hash;\n var hashes = window.location.search\n .slice(window.location.search.indexOf(\"?\") + 1)\n .split(\"&\");\n for (var i = 0; i < hashes.length; i++) {\n hash = hashes[i].split(\"=\");\n vars.push(hash[0]);\n vars[hash[0]] = hash[1];\n }\n return vars;\n },\n getUrlVar: function (name) {\n return $.getUrlVars()[name];\n },\n});\n","/*\n Support functions for PreTeXt books running on Runestone\n\n*/\n\nimport RunestoneBase from \"./runestonebase.js\";\n\nfunction setupPTXEvents() {\n let rb = new RunestoneBase();\n // log an event when a knowl is opened.\n $(\"[data-knowl]\").on(\"click\", function () {\n let div_id = $(this).data(\"refid\");\n rb.logBookEvent({ event: \"knowl\", act: \"click\", div_id: div_id });\n });\n // log an event when a sage cell is evaluated\n $(\".sagecell_evalButton\").on(\"click\", function () {\n // find parents\n let container = $(this).closest(\".sagecell-sage\");\n let code = $(container[0]).find(\".sagecell_input\")[0].textContent;\n rb.logBookEvent({ event: \"sage\", act: \"run\", div_id: container[0].id });\n });\n if (!eBookConfig.isInstructor) {\n $(\".commentary\").hide();\n }\n}\n\nwindow.addEventListener(\"load\", function () {\n console.log(\"setting up pretext\");\n setupPTXEvents();\n let wrap = document.getElementById(\"primary-navbar-sticky-wrapper\");\n if (wrap) {\n wrap.style.overflow=\"visible\";\n }\n});\n","// ***********************************************************************************\n// |docname| - A framework allowing a Runestone component to load only the JS it needs\n// ***********************************************************************************\n// The JavaScript required by all Runestone components is quite large and results in slow page loads. This approach enables a Runestone component to load only the JavaScript it needs, rather than loading JavaScript for all the components regardless of which are actually used.\n//\n// To accomplish this, webpack's split-chunks ability analyzes all JS, starting from this file. The dynamic imports below are transformed by webpack into the dynamic fetches of just the JS required by each file and all its dependencies. (If using static imports, webpack will assume that all files are already statically loaded via script tags, defeating the purpose of this framework.)\n//\n// However, this approach leads to complexity:\n//\n// - The ``data-component`` attribute of each component must be kept in sync with the keys of the ``module_map`` below.\n// - The values in the ``module_map`` must be kept in sync with the JavaScript files which implement each of the components.\n\n// Static imports\n// ==============\n// These imports are (we assume) needed by all pages. However, it would be much better to load these in the modules that actually use them.\n//\n// These are static imports; code in `dynamically loaded components`_ deals with dynamic imports.\n//\n// jQuery-related imports.\nimport \"jquery-ui/jquery-ui.js\";\nimport \"jquery-ui/themes/base/jquery.ui.all.css\";\nimport \"./runestone/common/js/jquery.idle-timer.js\";\nimport \"./runestone/common/js/jquery_i18n/jquery.i18n.js\";\nimport \"./runestone/common/js/jquery_i18n/jquery.i18n.emitter.bidi.js\";\nimport \"./runestone/common/js/jquery_i18n/jquery.i18n.emitter.js\";\nimport \"./runestone/common/js/jquery_i18n/jquery.i18n.fallbacks.js\";\nimport \"./runestone/common/js/jquery_i18n/jquery.i18n.messagestore.js\";\nimport \"./runestone/common/js/jquery_i18n/jquery.i18n.parser.js\";\nimport \"./runestone/common/js/jquery_i18n/jquery.i18n.language.js\";\n\n// Bootstrap\nimport \"bootstrap/dist/js/bootstrap.js\";\n// comment out for overhaul\n//import \"bootstrap/dist/css/bootstrap.css\";\nimport \"./ptxrs-bootstrap.less\";\nimport \"./runestone/common/project_template/_templates/plugin_layouts/sphinx_bootstrap/static/bootstrap-sphinx.js\";\n\n// Misc\nimport \"./runestone/common/js/bookfuncs.js\";\nimport \"./runestone/common/js/user-highlights.js\";\nimport \"./runestone/common/js/pretext.js\";\n\n// These belong in dynamic imports for the obvious component; however, these components don't include a ``data-component`` attribute.\nimport \"./runestone/matrixeq/css/matrixeq.css\";\nimport \"./runestone/webgldemo/css/webglinteractive.css\";\n\n// These are only needed for the Runestone book, but not in a library mode (such as pretext). I would prefer to dynamically load them. However, these scripts are so small I haven't bothered to do so.\nimport { getSwitch, switchTheme } from \"./runestone/common/js/theme.js\";\nimport \"./runestone/common/js/presenter_mode.js\";\nimport \"./runestone/common/css/presenter_mode.css\";\nimport { renderOneComponent } from \"./runestone/common/js/renderComponent.js\";\n\n// Dynamically loaded components\n// =============================\n// This provides a list of modules that components can dynamically import. Webpack will create a list of imports for each based on its analysis.\nconst module_map = {\n // Wrap each import in a function, so that it won't occur until the function is called. While something cleaner would be nice, webpack can't analyze things like ``import(expression)``.\n //\n // The keys must match the value of each component's ``data-component`` attribute -- the ``runestone_import`` and ``runestone_auto_import`` functions assume this.\n activecode: () => import(\"./runestone/activecode/js/acfactory.js\"),\n ble: () => import(\"./runestone/cellbotics/js/ble.js\"),\n // Always import the timed version of a component if available, since the timed components also define the component's factory and include the component as well. Note that ``acfactory`` imports the timed components of ActiveCode, so it follows this pattern.\n clickablearea: () =>\n import(\"./runestone/clickableArea/js/timedclickable.js\"),\n codelens: () => import(\"./runestone/codelens/js/codelens.js\"),\n datafile: () => import(\"./runestone/datafile/js/datafile.js\"),\n dragndrop: () => import(\"./runestone/dragndrop/js/timeddnd.js\"),\n fillintheblank: () => import(\"./runestone/fitb/js/timedfitb.js\"),\n groupsub: () => import(\"./runestone/groupsub/js/groupsub.js\"),\n khanex: () => import(\"./runestone/khanex/js/khanex.js\"),\n lp_build: () => import(\"./runestone/lp/js/lp.js\"),\n multiplechoice: () => import(\"./runestone/mchoice/js/timedmc.js\"),\n hparsons: () => import(\"./runestone/hparsons/js/hparsons.js\"),\n parsons: () => import(\"./runestone/parsons/js/timedparsons.js\"),\n poll: () => import(\"./runestone/poll/js/poll.js\"),\n quizly: () => import(\"./runestone/quizly/js/quizly.js\"),\n reveal: () => import(\"./runestone/reveal/js/reveal.js\"),\n selectquestion: () => import(\"./runestone/selectquestion/js/selectone.js\"),\n shortanswer: () =>\n import(\"./runestone/shortanswer/js/timed_shortanswer.js\"),\n showeval: () => import(\"./runestone/showeval/js/showEval.js\"),\n simple_sensor: () => import(\"./runestone/cellbotics/js/simple_sensor.js\"),\n spreadsheet: () => import(\"./runestone/spreadsheet/js/spreadsheet.js\"),\n tabbedStuff: () => import(\"./runestone/tabbedStuff/js/tabbedstuff.js\"),\n timedAssessment: () => import(\"./runestone/timed/js/timed.js\"),\n wavedrom: () => import(\"./runestone/wavedrom/js/wavedrom.js\"),\n // TODO: since this isn't in a ``data-component``, need to trigger an import of this code manually.\n webwork: () => import(\"./runestone/webwork/js/webwork.js\"),\n youtube: () => import(\"./runestone/video/js/runestonevideo.js\"),\n};\n\nconst module_map_cache = {};\nconst QUEUE_FLUSH_TIME_MS = 10;\nconst queue = [];\nlet queueLastFlush = 0;\n/**\n * Queue imports that are requested within `QUEUE_FLUSH_TIME_MS` of each other.\n * All such imports are imported at once, and then a promise is fired after all\n * the imports in the queue window have completed.\n */\nfunction queueImport(component_name) {\n let resolve = null;\n let reject = null;\n const retPromise = new Promise((r, rej) => {\n resolve = r;\n reject = rej;\n });\n const item = { component_name, resolve, reject };\n queue.push(item);\n window.setTimeout(flushQueue, QUEUE_FLUSH_TIME_MS + 1);\n\n return retPromise;\n}\nasync function flushQueue() {\n if (queue.length === 0) {\n return;\n }\n if (Date.now() - queueLastFlush < QUEUE_FLUSH_TIME_MS) {\n window.setTimeout(flushQueue, QUEUE_FLUSH_TIME_MS + 1);\n return;\n }\n // If we made it here, it has been at least QUEUE_FLUSH_TIME_MS since\n // the last time we flushed the queue. Therefore, we should start flushing.\n // We copy everything we flush and empty the array first.\n queueLastFlush = Date.now();\n const toFlush = [...queue];\n queue.length = 0;\n console.log(\n \"Webpack is starting the loading process for the following Runestone modules\",\n toFlush.map((item) => item.component_name)\n );\n const flushedPromise = toFlush.map(async (item) => {\n try {\n await module_map[item.component_name]();\n return item;\n } catch (e) {\n item.reject(e);\n }\n });\n const flushed = await Promise.all(flushedPromise);\n flushed.forEach((item) => item.resolve());\n}\n\n// .. _dynamic import machinery:\n//\n// Dynamic import machinery\n// ========================\n// Fulfill a promise when the Runestone pre-login complete event occurs.\nlet pre_login_complete_promise = new Promise((resolve) =>\n $(document).on(\"runestone:pre-login-complete\", resolve)\n);\nlet loadedComponents;\n// Provide a simple function to import the JS for all components on the page.\nexport function runestone_auto_import() {\n // Create a set of ``data-component`` values, to avoid duplication.\n const s = new Set(\n // All Runestone components have a ``data-component`` attribute.\n $(\"[data-component]\")\n .map(\n // Extract the value of the data-component attribute.\n (index, element) => $(element).attr(\"data-component\")\n // Switch from a jQuery object back to an array, passing that to the Set constructor.\n )\n .get()\n );\n // webwork questions are not wrapped in div with a data-component so we have to check a different way\n if (document.querySelector(\".webwork-button\")) {\n s.add(\"webwork\");\n }\n\n // Load JS for each of the components found.\n const a = [...s].map((value) =>\n // If there's no JS for this component, return an empty Promise.\n (module_map[value] || (() => Promise.resolve()))()\n );\n\n // Send the Runestone login complete event when all JS is loaded and the pre-login is also complete.\n Promise.all([pre_login_complete_promise, ...a]).then(function () {\n if (!document.body.dataset.reactInUse) {\n $(document).trigger(\"runestone:login-complete\");\n }\n });\n}\n\npre_login_complete_promise.then(() => {\n console.log(\"Runestone pre-login complete\");\n});\n\n// Load component JS when the document is ready.\n$(document).ready(runestone_auto_import);\n\n// Provide a function to import one specific `Runestone` component.\n// the import function inside module_map is async -- runestone_import\n// should be awaited when necessary to ensure the import completes\nexport async function runestone_import(component_name) {\n if (module_map_cache[component_name]) {\n return module_map_cache[component_name];\n }\n const promise = queueImport(component_name);\n module_map_cache[component_name] = promise;\n return promise;\n}\n\nasync function popupScratchAC() {\n // load the activecode bundle\n await runestone_import(\"activecode\");\n // scratchDiv will be defined if we have already created a scratch\n // activecode. If its not defined then we need to get it ready to toggle\n if (!eBookConfig.scratchDiv) {\n window.ACFactory.createScratchActivecode();\n let divid = eBookConfig.scratchDiv;\n window.componentMap[divid] = ACFactory.createActiveCode(\n $(`#${divid}`)[0],\n eBookConfig.acDefaultLanguage\n );\n if (eBookConfig.isLoggedIn) {\n window.componentMap[divid].enableSaveLoad();\n }\n }\n window.ACFactory.toggleScratchActivecode();\n}\n\n// Set the directory containing this script as the `path