| 1 | // TODO: if display == "all", les envois devraient être non définitifs (possibilité de corriger) |
| 2 | // Et, blur sur une (sous-)question devrait envoyer la version courante de la sous-question |
| 3 | |
| 4 | let socket = null; //monitor answers in real time |
| 5 | |
| 6 | if (assessment.mode == "secure" && !checkWindowSize()) |
| 7 | document.location.href= "/fullscreen"; |
| 8 | |
| 9 | function checkWindowSize() |
| 10 | { |
| 11 | // NOTE: temporarily accept smartphone (security hole: pretend being a smartphone on desktop browser...) |
| 12 | if (navigator.userAgent.match(/(iPhone|iPod|iPad|Android|BlackBerry)/)) |
| 13 | return true; |
| 14 | // 3 is arbitrary, but a small tolerance is required (e.g. in Firefox) |
| 15 | return window.innerWidth >= screen.width-3 && window.innerHeight >= screen.height-3; |
| 16 | }; |
| 17 | |
| 18 | function libsRefresh() |
| 19 | { |
| 20 | // Run Prism + MathJax on questions text |
| 21 | $("#statements").find("code[class^=language-]").each( (i,elem) => { |
| 22 | Prism.highlightElement(elem); |
| 23 | }); |
| 24 | MathJax.Hub.Queue(["Typeset",MathJax.Hub,"statements"]); |
| 25 | } |
| 26 | |
| 27 | new Vue({ |
| 28 | el: "#assessment", |
| 29 | data: { |
| 30 | assessment: assessment, |
| 31 | inputs: [ ], //student's answers |
| 32 | student: { }, //filled later |
| 33 | // Stage 0: unauthenticated (number), |
| 34 | // 1: authenticated (got a name, unvalidated) |
| 35 | // 2: locked: password set, exam started |
| 36 | // 3: completed |
| 37 | // 4: show answers |
| 38 | stage: assessment.mode != "open" ? 0 : 1, |
| 39 | remainingTime: 0, //global, in seconds |
| 40 | warnMsg: "", |
| 41 | }, |
| 42 | components: { |
| 43 | "statements": { |
| 44 | props: ['assessment','inputs','student','stage'], |
| 45 | // TODO: general render function for nested exercises |
| 46 | // There should be a questions navigator below, or next (visible if display=='all') |
| 47 | // Full questions tree is rendered, but some parts hidden depending on display settings |
| 48 | render(h) { |
| 49 | let self = this; |
| 50 | let questions = (assessment.questions || [ ]).map( (q,i) => { |
| 51 | let questionContent = [ ]; |
| 52 | questionContent.push( |
| 53 | h( |
| 54 | "div", |
| 55 | { |
| 56 | "class": { |
| 57 | wording: true, |
| 58 | }, |
| 59 | domProps: { |
| 60 | innerHTML: q.wording, |
| 61 | }, |
| 62 | } |
| 63 | ) |
| 64 | ); |
| 65 | let optionsOrder = _.range(q.options.length); |
| 66 | if (!q.fixed) |
| 67 | optionsOrder = _.shuffle(optionsOrder); |
| 68 | let optionList = [ ]; |
| 69 | optionsOrder.forEach( idx => { |
| 70 | let option = [ ]; |
| 71 | option.push( |
| 72 | h( |
| 73 | "input", |
| 74 | { |
| 75 | domProps: { |
| 76 | checked: this.inputs.length > 0 && this.inputs[i][idx], |
| 77 | }, |
| 78 | attrs: { |
| 79 | id: this.inputId(i,idx), |
| 80 | type: "checkbox", |
| 81 | }, |
| 82 | on: { |
| 83 | change: e => { this.inputs[i][idx] = e.target.checked; }, |
| 84 | }, |
| 85 | }, |
| 86 | ) |
| 87 | ); |
| 88 | option.push( |
| 89 | h( |
| 90 | "label", |
| 91 | { |
| 92 | domProps: { |
| 93 | innerHTML: q.options[idx], |
| 94 | }, |
| 95 | attrs: { |
| 96 | "for": this.inputId(i,idx), |
| 97 | }, |
| 98 | } |
| 99 | ) |
| 100 | ); |
| 101 | optionList.push( |
| 102 | h( |
| 103 | "div", |
| 104 | { |
| 105 | "class": { |
| 106 | option: true, |
| 107 | choiceCorrect: this.stage == 4 && assessment.questions[i].answer.includes(idx), |
| 108 | choiceWrong: this.stage == 4 && this.inputs[i][idx] && !assessment.questions[i].answer.includes(idx), |
| 109 | }, |
| 110 | }, |
| 111 | option |
| 112 | ) |
| 113 | ); |
| 114 | }); |
| 115 | questionContent.push( |
| 116 | h( |
| 117 | "div", |
| 118 | { |
| 119 | "class": { |
| 120 | optionList: true, |
| 121 | }, |
| 122 | }, |
| 123 | optionList |
| 124 | ) |
| 125 | ); |
| 126 | return h( |
| 127 | "div", |
| 128 | { |
| 129 | "class": { |
| 130 | "question": true, |
| 131 | "hide": this.stage == 2 && assessment.display == 'one' && assessment.indices[assessment.index] != i, |
| 132 | }, |
| 133 | }, |
| 134 | questionContent |
| 135 | ); |
| 136 | }); |
| 137 | if (this.stage == 2) |
| 138 | { |
| 139 | questions.unshift( |
| 140 | h( |
| 141 | "button", |
| 142 | { |
| 143 | "class": { |
| 144 | "waves-effect": true, |
| 145 | "waves-light": true, |
| 146 | "btn": true, |
| 147 | }, |
| 148 | style: { |
| 149 | "display": "block", |
| 150 | "margin-left": "auto", |
| 151 | "margin-right": "auto", |
| 152 | }, |
| 153 | on: { |
| 154 | click: () => this.sendAnswer(assessment.indices[assessment.index]), |
| 155 | }, |
| 156 | }, |
| 157 | "Send" |
| 158 | ) |
| 159 | ); |
| 160 | } |
| 161 | return h( |
| 162 | "div", |
| 163 | { |
| 164 | attrs: { |
| 165 | id: "statements", |
| 166 | }, |
| 167 | }, |
| 168 | questions |
| 169 | ); |
| 170 | }, |
| 171 | mounted: function() { |
| 172 | if (assessment.mode != "secure") |
| 173 | return; |
| 174 | window.addEventListener("keydown", e => { |
| 175 | // Ignore F12 (avoid accidental window resize due to devtools) |
| 176 | // NOTE: in Chromium at least, fullscreen mode exit with F11 cannot be prevented. |
| 177 | // Workaround: disable key at higher level. Possible xbindkey config: |
| 178 | // "false" |
| 179 | // m:0x10 + c:95 |
| 180 | // Mod2 + F11 |
| 181 | if (e.keyCode == 123) |
| 182 | e.preventDefault(); |
| 183 | }, false); |
| 184 | window.addEventListener("blur", () => { |
| 185 | this.trySendCurrentAnswer(); |
| 186 | document.location.href= "/noblur"; |
| 187 | }, false); |
| 188 | window.addEventListener("resize", e => { |
| 189 | this.trySendCurrentAnswer(); |
| 190 | document.location.href= "/fullscreen"; |
| 191 | }, false); |
| 192 | }, |
| 193 | updated: function() { |
| 194 | libsRefresh(); //TODO: shouldn't be required: "MathJax" strings on start and assign them to assessment.questions. ... |
| 195 | }, |
| 196 | methods: { |
| 197 | inputId: function(i,j) { |
| 198 | return "q" + i + "_" + "input" + j; |
| 199 | }, |
| 200 | trySendCurrentAnswer: function() { |
| 201 | if (this.stage == 2) |
| 202 | this.sendAnswer(assessment.indices[assessment.index]); |
| 203 | }, |
| 204 | // stage 2 |
| 205 | sendAnswer: function(realIndex) { |
| 206 | let gotoNext = () => { |
| 207 | if (assessment.index == assessment.questions.length - 1) |
| 208 | this.$emit("gameover"); |
| 209 | else |
| 210 | assessment.index++; |
| 211 | this.$forceUpdate(); //TODO: shouldn't be required |
| 212 | }; |
| 213 | if (assessment.mode == "open") |
| 214 | return gotoNext(); //only local |
| 215 | let answerData = { |
| 216 | aid: assessment._id, |
| 217 | answer: JSON.stringify({ |
| 218 | index:realIndex.toString(), |
| 219 | input:this.inputs[realIndex] |
| 220 | .map( (tf,i) => { return {val:tf,idx:i}; } ) |
| 221 | .filter( item => { return item.val; }) |
| 222 | .map( item => { return item.idx; }) |
| 223 | }), |
| 224 | number: this.student.number, |
| 225 | password: this.student.password, |
| 226 | }; |
| 227 | $.ajax("/send/answer", { |
| 228 | method: "GET", |
| 229 | data: answerData, |
| 230 | dataType: "json", |
| 231 | success: ret => { |
| 232 | if (!!ret.errmsg) |
| 233 | return this.$emit("warning", ret.errmsg); |
| 234 | else |
| 235 | gotoNext(); |
| 236 | socket.emit(message.newAnswer, answerData); |
| 237 | }, |
| 238 | }); |
| 239 | }, |
| 240 | }, |
| 241 | }, |
| 242 | }, |
| 243 | computed: { |
| 244 | countdown: function() { |
| 245 | let seconds = this.remainingTime % 60; |
| 246 | let minutes = Math.floor(this.remainingTime / 60); |
| 247 | return this.padWithZero(minutes) + ":" + this.padWithZero(seconds); |
| 248 | }, |
| 249 | }, |
| 250 | mounted: function() { |
| 251 | $(".modal").modal(); |
| 252 | }, |
| 253 | methods: { |
| 254 | // In case of AJAX errors |
| 255 | warning: function(message) { |
| 256 | this.warnMsg = message; |
| 257 | $("#warning").modal("open"); |
| 258 | }, |
| 259 | padWithZero: function(x) { |
| 260 | if (x < 10) |
| 261 | return "0" + x; |
| 262 | return x; |
| 263 | }, |
| 264 | // stage 0 --> 1 |
| 265 | getStudent: function(cb) { |
| 266 | $.ajax("/get/student", { |
| 267 | method: "GET", |
| 268 | data: { |
| 269 | number: this.student.number, |
| 270 | cid: assessment.cid, |
| 271 | }, |
| 272 | dataType: "json", |
| 273 | success: s => { |
| 274 | if (!!s.errmsg) |
| 275 | return this.warning(s.errmsg); |
| 276 | this.stage = 1; |
| 277 | this.student = s.student; |
| 278 | Vue.nextTick( () => { Materialize.updateTextFields(); }); |
| 279 | if (!!cb) |
| 280 | cb(); |
| 281 | }, |
| 282 | }); |
| 283 | }, |
| 284 | // stage 1 --> 0 |
| 285 | cancelStudent: function() { |
| 286 | this.stage = 0; |
| 287 | }, |
| 288 | // stage 1 --> 2 (get all questions, set password) |
| 289 | startAssessment: function() { |
| 290 | let initializeStage2 = (questions,paper) => { |
| 291 | $("#leftButton, #rightButton").hide(); |
| 292 | if (assessment.time > 0) |
| 293 | { |
| 294 | const deltaTime = !!paper ? Date.now() - paper.startTime : 0; |
| 295 | this.remainingTime = assessment.time * 60 - Math.round(deltaTime / 1000); |
| 296 | this.runTimer(); |
| 297 | } |
| 298 | // Initialize structured answer(s) based on questions type and nesting (TODO: more general) |
| 299 | if (!!questions) |
| 300 | assessment.questions = questions; |
| 301 | for (let q of assessment.questions) |
| 302 | this.inputs.push( _(q.options.length).times( _.constant(false) ) ); |
| 303 | if (!paper) |
| 304 | { |
| 305 | assessment.indices = assessment.fixed |
| 306 | ? _.range(assessment.questions.length) |
| 307 | : _.shuffle( _.range(assessment.questions.length) ); |
| 308 | } |
| 309 | else |
| 310 | { |
| 311 | // Resuming |
| 312 | let indices = paper.inputs.map( input => { return input.index; }); |
| 313 | let remainingIndices = _.difference( _.range(assessment.questions.length).map(String), indices ); |
| 314 | assessment.indices = indices.concat( _.shuffle(remainingIndices) ); |
| 315 | } |
| 316 | assessment.index = !!paper ? paper.inputs.length : 0; |
| 317 | Vue.nextTick(libsRefresh); |
| 318 | this.stage = 2; |
| 319 | }; |
| 320 | if (assessment.mode == "open") |
| 321 | return initializeStage2(); |
| 322 | $.ajax("/start/assessment", { |
| 323 | method: "GET", |
| 324 | data: { |
| 325 | number: this.student.number, |
| 326 | aid: assessment._id |
| 327 | }, |
| 328 | dataType: "json", |
| 329 | success: s => { |
| 330 | if (!!s.errmsg) |
| 331 | return this.warning(s.errmsg); |
| 332 | if (!!s.paper) |
| 333 | { |
| 334 | // Resuming: receive stored answers + startTime |
| 335 | this.student.password = s.paper.password; |
| 336 | this.inputs = s.paper.inputs.map( inp => { return inp.input; }); |
| 337 | } |
| 338 | else |
| 339 | { |
| 340 | this.student.password = s.password; |
| 341 | // Got password: students answers locked to this page until potential teacher |
| 342 | // action (power failure, computer down, ...) |
| 343 | } |
| 344 | socket = io.connect("/" + assessment.name, { |
| 345 | query: "number=" + this.student.number + "&password=" + this.password |
| 346 | }); |
| 347 | socket.on(message.allAnswers, this.setAnswers); |
| 348 | initializeStage2(s.questions, s.paper); |
| 349 | }, |
| 350 | }); |
| 351 | }, |
| 352 | // stage 2 |
| 353 | runTimer: function() { |
| 354 | if (assessment.time <= 0) |
| 355 | return; |
| 356 | let self = this; |
| 357 | setInterval( function() { |
| 358 | self.remainingTime--; |
| 359 | if (self.remainingTime <= 0 || self.stage >= 4) |
| 360 | self.endAssessment(); |
| 361 | clearInterval(this); |
| 362 | }, 1000); |
| 363 | }, |
| 364 | // stage 2 --> 3 (or 4) |
| 365 | // from a message by statements component, or time over |
| 366 | endAssessment: function() { |
| 367 | // Set endTime, destroy password |
| 368 | $("#leftButton, #rightButton").show(); |
| 369 | if (assessment.mode == "open") |
| 370 | { |
| 371 | this.stage = 4; |
| 372 | return; |
| 373 | } |
| 374 | $.ajax("/end/assessment", { |
| 375 | method: "GET", |
| 376 | data: { |
| 377 | aid: assessment._id, |
| 378 | number: this.student.number, |
| 379 | password: this.student.password, |
| 380 | }, |
| 381 | dataType: "json", |
| 382 | success: ret => { |
| 383 | if (!!ret.errmsg) |
| 384 | return this.warning(ret.errmsg); |
| 385 | assessment.conclusion = ret.conclusion; |
| 386 | this.stage = 3; |
| 387 | delete this.student["password"]; //unable to send new answers now |
| 388 | socket.disconnect(); |
| 389 | socket = null; |
| 390 | }, |
| 391 | }); |
| 392 | }, |
| 393 | // stage 3 --> 4 (on socket message "feedback") |
| 394 | setAnswers: function(answers) { |
| 395 | for (let i=0; i<answers.length; i++) |
| 396 | assessment.questions[i].answer = answers[i]; |
| 397 | this.stage = 4; |
| 398 | }, |
| 399 | }, |
| 400 | }); |