Poll creator:

Non-anonymous mode support;
Multiple choice mode support;
Quiz mode support;
Fix revote rights;

src/components/chat/contextMenu.ts

@@ -2,7 +2,7 @@ import appChatsManager from "../../lib/appManagers/appChatsManager";
 import appImManager from "../../lib/appManagers/appImManager";
 import appMessagesManager from "../../lib/appManagers/appMessagesManager";
 import appPeersManager from "../../lib/appManagers/appPeersManager";
-import appPollsManager from "../../lib/appManagers/appPollsManager";
+import appPollsManager, { Poll } from "../../lib/appManagers/appPollsManager";
 import $rootScope from "../../lib/rootScope";
 import { findUpClassName } from "../../lib/utils";
 import ButtonMenu, { ButtonMenuItemOptions } from "../buttonMenu";
@@ -67,7 +67,7 @@ export class ChatContextMenu {
       icon: 'edit',
       text: 'Edit',
       onClick: this.onEditClick,
-      verify: (peerID: number, msgID: number) => appMessagesManager.canEditMessage(msgID)
+      verify: (peerID: number, msgID: number) => appMessagesManager.canEditMessage(msgID, 'text')
     }, {
       icon: 'copy',
       text: 'Copy',
@@ -84,8 +84,8 @@ export class ChatContextMenu {
       onClick: this.onRetractVote,
       verify: (peerID: number, msgID) => {
         const message = appMessagesManager.getMessage(msgID);
-        const poll = message.media?.poll;
-        return poll && !poll.pFlags.closed;
+        const poll = message.media?.poll as Poll;
+        return poll && poll.chosenIndexes.length && !poll.pFlags.closed && !poll.pFlags.quiz;
       } 
     }, {
       icon: 'lock',
@@ -94,7 +94,7 @@ export class ChatContextMenu {
       verify: (peerID: number, msgID) => {
         const message = appMessagesManager.getMessage(msgID);
         const poll = message.media?.poll;
-        return appMessagesManager.canEditMessage(msgID) && message.fromID == $rootScope.myID && message.fwd_from === undefined && poll && !poll.pFlags.closed;
+        return appMessagesManager.canEditMessage(msgID, 'poll') && poll && !poll.pFlags.closed;
       } 
     }, {
       icon: 'forward',

src/components/checkbox.ts

@@ -0,0 +1,17 @@
+const CheckboxField = (text: string, name: string) => {
+  const label = document.createElement('label');
+  label.classList.add('checkbox-field');
+
+  const input = document.createElement('input');
+  input.type = 'checkbox';
+  input.id = 'input-' + name;
+
+  const span = document.createElement('span');
+  span.innerText = text;
+
+  label.append(input, span);
+
+  return {label, input, span};
+};
+
+export default CheckboxField;

src/components/popupCreatePoll.ts

@@ -1,7 +1,11 @@
 import appMessagesManager from "../lib/appManagers/appMessagesManager";
+import appPeersManager from "../lib/appManagers/appPeersManager";
 import appPollsManager, { Poll } from "../lib/appManagers/appPollsManager";
 import $rootScope from "../lib/rootScope";
+import { findUpTag, whichChild } from "../lib/utils";
+import CheckboxField from "./checkbox";
 import { PopupElement } from "./popup";
+import RadioField from "./radioField";
 import Scrollable from "./scrollable";
 import { toast } from "./toast";
 
@@ -23,6 +27,13 @@ export default class PopupCreatePoll extends PopupElement {
   private scrollable: Scrollable;
   private tempID = 0;
 
+  private anonymousCheckboxField: ReturnType<typeof CheckboxField>;
+  private multipleCheckboxField: PopupCreatePoll['anonymousCheckboxField'];
+  private quizCheckboxField: PopupCreatePoll['anonymousCheckboxField'];
+
+  private correctAnswers: Uint8Array[];
+  private quizSolutionInput: HTMLInputElement;
+
   constructor() {
     super('popup-create-poll popup-new-media', null, {closable: true, withConfirm: 'CREATE', body: true});
 
@@ -38,11 +49,71 @@ export default class PopupCreatePoll extends PopupElement {
     d.classList.add('caption');
     d.innerText = 'Options';
 
-    this.questions = document.createElement('div');
+    this.questions = document.createElement('form');
     this.questions.classList.add('poll-create-questions');
 
+    const dd = document.createElement('div');
+    dd.classList.add('poll-create-settings');
+    
+    const settingsCaption = document.createElement('div');
+    settingsCaption.classList.add('caption');
+    settingsCaption.innerText = 'Settings';
+
+    const peerID = $rootScope.selectedPeerID;
+    
+    if(!appPeersManager.isBroadcast(peerID)) {
+      this.anonymousCheckboxField = CheckboxField('Anonymous Voting', 'anonymous');
+      this.anonymousCheckboxField.input.checked = true;
+      dd.append(this.anonymousCheckboxField.label);
+    }
+    
+    this.multipleCheckboxField = CheckboxField('Multiple Answers', 'multiple');
+    this.quizCheckboxField = CheckboxField('Quiz Mode', 'quiz');
+
+    this.multipleCheckboxField.input.addEventListener('change', () => {
+      const checked = this.multipleCheckboxField.input.checked;
+      this.quizCheckboxField.input.toggleAttribute('disabled', checked);
+    });
+
+    this.quizCheckboxField.input.addEventListener('change', () => {
+      const checked = this.quizCheckboxField.input.checked;
+
+      (Array.from(this.questions.children) as HTMLElement[]).map(el => {
+        el.classList.toggle('radio-field', checked);
+      });
+
+      quizElements.forEach(el => el.classList.toggle('hide', !checked));
+
+      this.multipleCheckboxField.input.toggleAttribute('disabled', checked);
+    });
+
+    dd.append(this.multipleCheckboxField.label, this.quizCheckboxField.label);
+
+    const quizElements: HTMLElement[] = [];
+
+    const quizSolutionCaption = document.createElement('div');
+    quizSolutionCaption.classList.add('caption');
+    quizSolutionCaption.innerText = 'Explanation';
+
+    const quizHr = document.createElement('hr');
+
+    const quizSolutionContainer = document.createElement('div');
+    quizSolutionContainer.classList.add('poll-create-questions');
+
+    const quizSolutionField = InputField('Add a Comment (Optional)', 'Add a Comment (Optional)', 'solution');
+    this.quizSolutionInput = quizSolutionField.firstElementChild as HTMLInputElement;
+
+    const quizSolutionSubtitle = document.createElement('div');
+    quizSolutionSubtitle.classList.add('subtitle');
+    quizSolutionSubtitle.innerText = 'Users will see this comment after choosing a wrong answer, good for educational purposes.';
+
+    quizSolutionContainer.append(quizSolutionField, quizSolutionSubtitle);
+
+    quizElements.push(quizHr, quizSolutionCaption, quizSolutionContainer);
+    quizElements.forEach(el => el.classList.add('hide'));
+
     this.body.parentElement.insertBefore(hr, this.body);
-    this.body.append(d, this.questions);
+    this.body.append(d, this.questions, document.createElement('hr'), settingsCaption, dd, ...quizElements);
 
     this.confirmBtn.addEventListener('click', this.onSubmitClick);
 
@@ -54,17 +125,22 @@ export default class PopupCreatePoll extends PopupElement {
     const question = this.questionInput.value;
 
     if(!question.trim()) {
-      toast('Please enter a question');
+      toast('Please enter a question.');
+      return;
+    }
+
+    if(this.quizCheckboxField.input.checked && !this.correctAnswers?.length) {
+      toast('Please choose the correct answer.');
       return;
     }
 
     const answers = Array.from(this.questions.children).map((el, idx) => {
-      const input = (el.firstElementChild as HTMLInputElement);
+      const input = el.querySelector('input[type="text"]') as HTMLInputElement;
       return input.value;
     }).filter(v => !!v.trim());
 
     if(answers.length < 2) {
-      toast('Please enter at least two options');
+      toast('Please enter at least two options.');
       return;
     }
 
@@ -74,8 +150,23 @@ export default class PopupCreatePoll extends PopupElement {
     //const randomID = [nextRandomInt(0xFFFFFFFF), nextRandomInt(0xFFFFFFFF)];
     //const randomIDS = bigint(randomID[0]).shiftLeft(32).add(bigint(randomID[1])).toString();
 
+    const pFlags: Poll['pFlags'] = {};
+
+    if(this.anonymousCheckboxField && !this.anonymousCheckboxField.input.checked) {
+      pFlags.public_voters = true;
+    }
+
+    if(this.multipleCheckboxField.input.checked) {
+      pFlags.multiple_choice = true;
+    }
+
+    if(this.quizCheckboxField.input.checked) {
+      pFlags.quiz = true;
+    }
+
     const poll: Poll = {
       _: 'poll',
+      pFlags,
       question,
       answers: answers.map((value, idx) => {
         return {
@@ -88,17 +179,22 @@ export default class PopupCreatePoll extends PopupElement {
     };
     //poll.id = randomIDS;
 
-    appMessagesManager.sendOther($rootScope.selectedPeerID, appPollsManager.getInputMediaPoll(poll));
+    const inputMediaPoll = appPollsManager.getInputMediaPoll(poll, this.correctAnswers, this.quizSolutionInput ? this.quizSolutionInput.value : undefined);
+
+    appMessagesManager.sendOther($rootScope.selectedPeerID, inputMediaPoll);
   };
 
   onInput = (e: Event) => {
     const target = e.target as HTMLInputElement;
 
+    const radioLabel = findUpTag(target, 'LABEL');
     if(target.value.length) {
       target.parentElement.classList.add('is-filled');
+      radioLabel.classList.remove('hidden-widget');
+      radioLabel.firstElementChild.removeAttribute('disabled');
     }
 
-    const isLast = !target.parentElement.nextElementSibling;
+    const isLast = !radioLabel.nextElementSibling;
     if(isLast && target.value.length && this.questions.childElementCount < 10) {
       this.appendMoreField();
     }
@@ -106,27 +202,44 @@ export default class PopupCreatePoll extends PopupElement {
 
   onDeleteClick = (e: MouseEvent) => {
     const target = e.target as HTMLSpanElement;
-    target.parentElement.remove();
+    findUpTag(target, 'LABEL').remove();
 
     Array.from(this.questions.children).forEach((el, idx) => {
-      const label = el.firstElementChild.nextElementSibling as HTMLLabelElement;
+      const label = el.querySelector('label') as HTMLLabelElement;
       label.innerText = 'Option ' + (idx + 1);
     });
   };
 
   private appendMoreField() {
+    const tempID = this.tempID++;
     const idx = this.questions.childElementCount + 1;
-    const questionField = InputField('Add an Option', 'Option ' + idx, 'question-' + this.tempID++);
+    const questionField = InputField('Add an Option', 'Option ' + idx, 'question-' + tempID);
     (questionField.firstElementChild as HTMLInputElement).addEventListener('input', this.onInput);
 
+    const radioField = RadioField('', 'question');
+    radioField.main.append(questionField);
+    radioField.label.classList.add('hidden-widget');
+    radioField.input.disabled = true;
+    if(!this.quizCheckboxField.input.checked) {
+      radioField.label.classList.remove('radio-field');
+    }
+    radioField.input.addEventListener('change', () => {
+      const checked = radioField.input.checked;
+      if(checked) {
+        const idx = whichChild(radioField.label);
+        this.correctAnswers = [new Uint8Array([idx])];
+      }
+    });
+
     const deleteBtn = document.createElement('span');
     deleteBtn.classList.add('btn-icon', 'tgico-close');
     questionField.append(deleteBtn);
   
     deleteBtn.addEventListener('click', this.onDeleteClick, {once: true});
 
-    this.questions.append(questionField);
+    this.questions.append(radioField.label);
 
-    this.scrollable.scrollTo(this.scrollable.scrollHeight, 'top', true, true);
+    this.scrollable.scrollIntoView(this.questions.lastElementChild as HTMLElement, true);
+    //this.scrollable.scrollTo(this.scrollable.scrollHeight, 'top', true, true);
   }
 }

src/components/radioField.ts

@@ -0,0 +1,18 @@
+const RadioField = (text: string, name: string) => {
+  const label = document.createElement('label');
+  label.classList.add('radio-field');
+
+  const input = document.createElement('input');
+  input.type = 'radio';
+  input.id = input.name = 'input-radio-' + name;
+
+  const main = document.createElement('div');
+  main.classList.add('radio-field-main');
+  main.innerText = text;
+
+  label.append(input, main);
+
+  return {label, input, main};
+};
+
+export default RadioField;

src/lib/appManagers/appMessagesManager.ts

@@ -667,9 +667,9 @@ export class AppMessagesManager {
     noWebPage: true,
     newMedia: any
   }> = {}) {
-    if(!this.canEditMessage(messageID)) {
+    /* if(!this.canEditMessage(messageID)) {
       return Promise.reject({type: 'MESSAGE_EDIT_FORBIDDEN'});
-    }
+    } */
 
     if(messageID < 0) {
       if(this.tempFinalizeCallbacks[messageID] === undefined) {
@@ -2397,8 +2397,6 @@ export class AppMessagesManager {
         apiMessage.totalEntities = RichTextProcessor.mergeEntities(myEntities, apiEntities, !apiMessage.pending);
       }
 
-      apiMessage.canBeEdited = this.canMessageBeEdited(apiMessage);
-
       if(!options.isEdited) {
         this.messagesStorage[mid] = apiMessage;
         (this.messagesStorageByPeerID[peerID] ?? (this.messagesStorageByPeerID[peerID] = {}))[mid] = apiMessage;
@@ -2588,15 +2586,18 @@ export class AppMessagesManager {
     }
   }
 
-  public canMessageBeEdited(message: any) {
+  public canMessageBeEdited(message: any, kind: 'text' | 'poll') {
     const goodMedias = [
       'messageMediaPhoto',
       'messageMediaDocument',
       'messageMediaWebPage',
-      'messageMediaPending',
-      'messageMediaPoll'
+      'messageMediaPending'
     ];
 
+    if(kind == 'poll') {
+      goodMedias.push('messageMediaPoll');
+    }
+
     if(message._ != 'message' ||
         message.deleted ||
         message.fwd_from ||
@@ -2615,13 +2616,13 @@ export class AppMessagesManager {
     return true;
   }
 
-  public canEditMessage(messageID: number) {
+  public canEditMessage(messageID: number, kind: 'text' | 'poll' = 'text') {
     if(!this.messagesStorage[messageID]) {
       return false;
     }
 
     const message = this.messagesStorage[messageID];
-    if(!message || !message.canBeEdited) {
+    if(!message || !this.canMessageBeEdited(message, kind)) {
       return false;
     }
 

src/lib/appManagers/appPollsManager.ts

@@ -1,3 +1,4 @@
+import { InputMedia } from "../../layer";
 import { logger, LogLevels } from "../logger";
 import apiManager from "../mtproto/mtprotoworker";
 import { MOUNT_CLASS_TO } from "../mtproto/mtproto_config";
@@ -140,10 +141,19 @@ class AppPollsManager {
     };
   }
 
-  public getInputMediaPoll(poll: Poll) {
+  public getInputMediaPoll(poll: Poll, correctAnswers?: Uint8Array[], solution?: string): InputMedia.inputMediaPoll {
+    let solution_entities: any[];
+    if(solution) {
+      solution_entities = [];
+      solution = RichTextProcessor.parseMarkdown(solution, solution_entities);
+    }
+
     return {
       _: 'inputMediaPoll',
-      poll
+      poll,
+      correct_answers: correctAnswers,
+      solution,
+      solution_entities
     };
   }
 

src/scss/partials/popups/_createPoll.scss

@@ -8,6 +8,17 @@
     }
   }
 
+  .radio-field {
+    margin: 0;
+  }
+
+  .hidden-widget, .radio-field:first-child:last-child {
+    .btn-icon {
+      pointer-events: none;
+      opacity: 0 !important;
+    }
+  }
+
   .input-field {
     margin-top: 25px;
     .btn-icon {
@@ -19,13 +30,6 @@
       opacity: 1;
       transition: opacity .2s ease;
     }
-
-    &:not(.is-filled), &:first-child:last-child {
-      .btn-icon {
-        pointer-events: none;
-        opacity: 0;
-      }
-    }
     /* &:last-child:not(:nth-child(10)) {
       .btn-icon {
         display: none;
@@ -36,14 +40,24 @@
   .caption {    
     color: #707579;
     font-weight: 500;
-    padding: 16px 24px 0;
+    padding: 1rem 1.5rem 0;
   }
 
   .poll-create-questions {
-    padding: 0px 20px 32.5px;
+    padding: 0px 1.25rem 2.03125rem;
+  }
+
+  .poll-create-settings {
+    padding: 0 .5rem .5rem;
   }
 
   hr {
     border-bottom: 1px solid #edeff1;
   }
+
+  .subtitle {
+    margin-top: .875rem;
+    font-size: .875rem;
+    line-height: 1.2;
+  }
 }

src/scss/style.scss

@@ -72,6 +72,7 @@ $floating-left-sidebar: 925px;
 }
 
 :root {
+  --z-below: -1;
   --color-gray: #c4c9cc;
   --color-gray-hover: rgba(112, 117, 121, .08);
   --layer-transition: .2s ease-in-out;
@@ -675,7 +676,7 @@ hr {
   margin: 1.25rem 0;
   display: block;
   text-align: left;
-  padding: 0 18px;
+  padding: 0 1.125rem;
   /* font-weight: 500; */
   position: relative;
 
@@ -684,23 +685,138 @@ hr {
   }
 }
 
-[type="checkbox"] {
+.radio-field {
+  display: block;
+	position: relative;
+	padding-left: 3.5rem;
+	text-align: left;
+	margin: 1.25rem 0;
+	line-height: 1.5rem;
+  cursor: pointer;
+  
+  &.hidden-widget {
+    cursor: default;
+
+    .radio-field-main {
+      &::before, &::after {
+        visibility: hidden;
+      }
+    }
+  }
+
+  > input {
+    &:checked {
+      & ~ .radio-field-main {
+        &::before {
+          border-color: $button-primary-background;
+        }
+    
+        &::after {
+          opacity: 1;
+        }
+      }
+    }
+  }
+
+  .radio-field-main {
+    &::before, &::after {
+      content: '';
+      display: block;
       position: absolute;
+      left: .25rem;
+      top: 50%;
+      width: 1.25rem;
+      height: 1.25rem;
+      transform: translateY(-50%);
+    }
+
+    &::before {
+      border: 2px solid #8d969c;
+      border-radius: 50%;
+      background-color: white;
+      opacity: 1;
+      transition: border-color .1s ease, opacity .1s ease;
+    }
+
+    &::after {
+      left: .5625rem;
+      width: .625rem;
+      height: .625rem;
+      border-radius: 50%;
+      background: $button-primary-background;
       opacity: 0;
-  pointer-events: none;
-  -webkit-box-sizing: border-box;
+      transition: opacity .1s ease;
+    }
+
+    /* .label {
+      display: block;
+      word-break: break-word;
+    }
+
+    .subLabel {
+      display: block;
+      font-size: 0.875rem;
+      line-height: 1rem;
+      color: var(--color-text-secondary);
+    } */
+  }
+}
+
+[type="checkbox"], [type="radio"] {
   box-sizing: border-box;
   padding: 0;
+  opacity: 0;
+  z-index: var(--z-below);
+  position: absolute;
+}
 
+[type="checkbox"] {
   & + span {
     position: relative;
-    padding-left: calc(18px + 2.25rem);
+    padding-left: 3.5rem;
     cursor: pointer;
     display: inline-block;
     height: 25px;
     line-height: 25px;
     user-select: none;
+    transition: .2s opacity;
+  }
+  
+  &:not(:checked) + span:before {
+    width: 0;
+    height: 0;
+    border: 2px solid transparent;
+    left: 6px;
+    top: 10px;
+    transform: rotateZ(45deg);
+    transform-origin: 100% 100%;
+  }
   
+  &:checked + span:before {
+    top: 4px;
+    left: -1px;
+    width: 8px;
+    height: 14px;
+    border-top: 2px solid transparent;
+    border-left: 2px solid transparent;
+    border-right: 2px solid #fff;
+    border-bottom: 2px solid #fff;
+    transform: rotateZ(45deg);
+    transform-origin: 100% 100%;
+  }
+  
+  &:not(:checked) + span:after {
+    background-color: transparent;
+    border-color: #8d969c;
+  }
+  
+  &:checked + span:after {
+    background-color: $button-primary-background;
+  }
+}
+
+[type="checkbox"] {
+  & + span {
     &:before, &:after {
       content: '';
       left: 0;