97 lines
2.4 KiB
JavaScript
97 lines
2.4 KiB
JavaScript
let connection = new signalR.HubConnectionBuilder()
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.withAutomaticReconnect()
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.withUrl("/noteHub")
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.build();
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function start() {
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connection.start().then(function () {
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console.log('Started websocket listener');
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}).catch(function (err) {
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console.error(err.toString());
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return alert('Connection error. Reload page.');
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});
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}
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function showToast(selector) {
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const cssClass = 'show';
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// show 'saved' indicator
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$(selector).addClass(cssClass).delay(800).queue(function (next) {
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$(this).removeClass(cssClass);
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next();
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});
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}
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function saveContent($textarea) {
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$textarea = $textarea || $('textarea');
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var content = $textarea.val();
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connection.invoke('SaveNote', content).then(function () {
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showToast('#saved-indicator');
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}).catch(function (err) {
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console.error(err.toString());
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setTimeout(start, 2000);
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});
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};
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// start the signalr connection
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start();
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$(function () {
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const $textarea = $('textarea');
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// update content upon sync save
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connection.on('updateNote', function (content) {
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$textarea.val(content);
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showToast('#update-indicator');
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});
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// set dark mode
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if (window.location.hash == '#dark') {
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$('body').addClass('dark');
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}
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let timer = null;
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const ignoredKeyCodes = [17, 18, 20, 27, 37, 38, 39, 40, 91];
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// save after a second delay after typing
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$textarea.keyup(function (e) {
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// only set timer if key isn't ignored
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if (!ignoredKeyCodes.includes(e.keyCode)) {
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clearTimeout(timer);
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timer = setTimeout(function () {
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saveContent();
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}, 1000);
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}
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});
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// support tab key in textarea
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$textarea.keydown(function (e) {
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if (e.keyCode === 9) { // tab was pressed
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// get caret position/selection
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var start = this.selectionStart;
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end = this.selectionEnd;
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var $this = $(this);
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// set textarea value to: text before caret + tab + text after caret
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$this.val($this.val().substring(0, start)
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+ ' '
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+ $this.val().substring(end));
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// put caret at right position again
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this.selectionStart = this.selectionEnd = start + 2;
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// prevent the focus lose
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return false;
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}
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});
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}); |