snapshot of https://github.com/jitsi/jitsi-meet.git @ fd1749dd28f4138aa80234fc7f311b19aaffa0e7 (2026-09-15)

react/features/polls/functions.ts

@@ -0,0 +1,87 @@
+import { IReduxState } from '../app/types';
+import { MEET_FEATURES } from '../base/jwt/constants';
+import { isJwtFeatureEnabled } from '../base/jwt/functions';
+import { iAmVisitor } from '../visitors/functions';
+
+import { IAnswerData } from './types';
+
+/**
+ * Selector creator for determining if poll results should be displayed or not.
+ *
+ * @param {string} id - Id of the poll.
+ * @returns {Function}
+ */
+export function shouldShowResults(id: string) {
+    return function(state: IReduxState) {
+        return Boolean(state['features/polls']?.polls[id].showResults);
+    };
+}
+
+/**
+ * Selector creator for polls.
+ *
+ * @param {string} pollId - Id of the poll to get.
+ * @returns {Function}
+ */
+export function getPoll(pollId: string) {
+    return function(state: IReduxState) {
+        return state['features/polls'].polls[pollId];
+    };
+}
+
+/**
+ * Selector for calculating the number of unread poll messages.
+ *
+ * @param {IReduxState} state - The redux state.
+ * @returns {number} The number of unread messages.
+ */
+export function getUnreadPollCount(state: IReduxState) {
+    const { unreadPollsCount } = state['features/polls'];
+
+    return unreadPollsCount;
+}
+
+/**
+ * Determines if the submit poll answer button should be disabled.
+ *
+ * @param {Array<boolean>} checkBoxStates - The states of the checkboxes.
+ * @returns {boolean}
+ */
+export function isSubmitAnswerDisabled(checkBoxStates: Array<boolean>) {
+    return !checkBoxStates.find(checked => checked);
+}
+
+/**
+ * Check if the input array has identical answers.
+ *
+ * @param {Array<IAnswerData>} currentAnswers - The array of current answers to compare.
+ * @returns {boolean} - Returns true if the answers are identical.
+ */
+export function hasIdenticalAnswers(currentAnswers: Array<IAnswerData>): boolean {
+
+    const nonEmptyCurrentAnswers = currentAnswers.filter((answer): boolean => answer.name !== '');
+
+    const currentAnswersSet = new Set(nonEmptyCurrentAnswers.map(answer => answer.name));
+
+    return currentAnswersSet.size !== nonEmptyCurrentAnswers.length;
+}
+
+/**
+ * Check if participant is not allowed to create polls.
+ *
+ * @param {IReduxState} state - The redux state.
+ * @returns {boolean} - Returns true if the participant is not allowed to create polls.
+ */
+export function isCreatePollDisabled(state: IReduxState) {
+    if (iAmVisitor(state)) {
+        return true;
+    }
+
+    const { pollCreationRequiresPermission } = state['features/dynamic-branding'];
+
+    if (!pollCreationRequiresPermission) {
+        return false;
+    }
+
+    return !isJwtFeatureEnabled(state, MEET_FEATURES.CREATE_POLLS, false);
+}