298d0e3e34
The theme setting is only used on this page right now, so it makes no sense to include in other pages.
70 lines
2.7 KiB
JavaScript
70 lines
2.7 KiB
JavaScript
// Common functions
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// These functions should be executed in all the game pages, except the privacy policy, licenses, and legal mentions ones.
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/*
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* Prevent using Internet Explorer browser in the game, by detecting whether MSIE or Trident is
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* present in the user agent.
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*
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* <p>
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* If Internet Explorer is used, an error message which prevents playing the game and requesting
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* user to change their browser is shown.
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* </p>
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*/
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function detectIEBrowsers() {
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let browserName = window.navigator.userAgent;
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if (browserName.indexOf("MSIE") != -1 || browserName.indexOf("Trident") != -1) {
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showUnsupportedBrowserMessage("Il semblerait que vous utilisez Internet Explorer, un navigateur non supporté. Veuillez utiliser un autre navigateur récent tel que Firefox.");
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}
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}
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/**
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* Check the availability of the WebSocket API in the client.
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*
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* <p>
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* If it is not available, an error message which prevents playing the game and requesting user to
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* enable WebSocket API is shown.
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* </p>
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*/
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function checkWebSocketAvailability() {
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if (!window.WebSocket) {
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showUnsupportedBrowserMessage("Votre navigateur ne prend pas en charge les API WebSocket, nécessaires au fonctionnement du jeu. Veuillez les activer ou utiliser un navigateur compatible avec ces APIs, tel que Firefox.");
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}
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}
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/**
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* Show the unsupported browser dialog, which disables ability to play the game, using the given
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* unsupported browser message text.
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*
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* <p>
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* This method will provide the text supplied to the first element with the unsupported_browser_msg
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* CSS class found.
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* </p>
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*
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* @param {String} messageText the error message to show, as a string and not as an HTML block
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*/
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function showUnsupportedBrowserMessage(messageText) {
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showAlertDialog(document.getElementById("unsupported_browser_dialog"));
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let unsupportedBrowserMessageElement = document.getElementsByClassName("unsupported_browser_msg")[0];
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unsupportedBrowserMessageElement.textContent = messageText;
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unsupportedBrowserMessageElement.classList.add("unsupported_show");
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}
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/**
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* Show an alert dialog component which will show a background preventing interactions with the game.
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*
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* <p>
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* This function will add the alert_dialog_show CSS class to the element passed and show to the first
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* element found with the alert_dialog_background class.
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* </p>
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*
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* @param {Element} element an HTML element which should contain the alert_dialog CSS class
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*/
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function showAlertDialog(element) {
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element.classList.add("alert_dialog_show");
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document.getElementsByClassName("alert_dialog_background")[0].style.display = "block";
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}
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// Execution of main functions
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detectIEBrowsers();
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checkWebSocketAvailability(); |