Adds customizable quick replies with a UI to Discourse forums, with enhanced UI theming.
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// ==UserScript==
// @name Discourse Customizable Quick Replies
// @namespace https://github.com/stevessr/bug-v3
// @version 2.1.0
// @description Adds customizable quick replies with a UI to Discourse forums, with enhanced UI theming.
// @author stevessr (modified by an AI assistant)
// @match https://linux.do/*
// @match https://meta.discourse.org/*
// @match https://*.discourse.org/*
// @match http://localhost:5173/*
// @exclude https://linux.do/a/*
// @match https://idcflare.com/*
// @grant none
// @license MIT
// @homepageURL https://github.com/stevessr/bug-v3
// @supportURL https://github.com/stevessr/bug-v3/issues
// @run-at document-end
// ==/UserScript==
(function () {
'use strict';
// ===== Settings Management =====
const SETTINGS_KEY = 'custom_quick_replies_settings';
let quickReplies = [];
const DEFAULT_QUICK_REPLIES = [
{ display: 'Info', insert: '>[!info]+\n', prefix: '[!info' },
{ display: 'Tip', insert: '>[!tip]+\n', prefix: '[!tip' },
{ display: 'Success', insert: '>[!success]+\n', prefix: '[!success' },
{ display: 'Warning', insert: '>[!warning]+\n', prefix: '[!warning' },
{ display: 'Danger', insert: '>[!danger]+\n', prefix: '[!danger' },
];
function loadQuickReplies() {
try {
const settingsData = localStorage.getItem(SETTINGS_KEY);
if (settingsData) {
quickReplies = JSON.parse(settingsData);
} else {
quickReplies = DEFAULT_QUICK_REPLIES;
}
} catch (e) {
console.warn('[Quick Replies] Failed to load settings:', e);
quickReplies = DEFAULT_QUICK_REPLIES;
}
}
function saveQuickReplies() {
try {
localStorage.setItem(SETTINGS_KEY, JSON.stringify(quickReplies));
} catch (e) {
console.error('[Quick Replies] Failed to save settings:', e);
}
}
// ===== Suggestion Box =====
let suggestionBox = null;
let activeSuggestionIndex = 0;
// ===== Entry Point =====
if (isDiscoursePage()) {
console.log('[Quick Replies] Discourse detected, initializing...');
loadQuickReplies();
if (document.readyState === 'loading') {
document.addEventListener('DOMContentLoaded', () => {
initQuickReplyFeatures();
initQuickInsertButton();
});
} else {
initQuickReplyFeatures();
initQuickInsertButton();
}
}
// ===== Detailed Implementation =====
function isDiscoursePage() {
return document.querySelector('#main-outlet, .ember-application, textarea.d-editor-input, .ProseMirror.d-editor-input');
}
function initQuickReplyFeatures() {
createSuggestionBox();
document.addEventListener('input', handleInput, true);
document.addEventListener('keydown', handleKeydown, true);
document.addEventListener('click', e => {
if (e.target && e.target.tagName !== 'TEXTAREA' && suggestionBox && !suggestionBox.contains(e.target)) {
hideSuggestionBox();
}
});
console.log('[Quick Replies] Suggestion features initialized.');
}
function initQuickInsertButton() {
const observer = new MutationObserver(() => {
const toolbars = document.querySelectorAll('.d-editor-button-bar, .chat-composer__inner-container');
toolbars.forEach(toolbar => {
if (!toolbar.querySelector('.quick-reply-settings-btn')) {
injectQuickInsertButton(toolbar);
}
});
});
observer.observe(document.body, { childList: true, subtree: true });
console.log('[Quick Replies] Quick insert button observer initialized.');
}
function injectQuickInsertButton(toolbar) {
const quickInsertButton = document.createElement('button');
quickInsertButton.className = 'btn no-text btn-icon toolbar__button quick-insert-button';
quickInsertButton.title = 'Quick Replies';
quickInsertButton.innerHTML = '⎘';
quickInsertButton.addEventListener('click', e => {
e.stopPropagation();
toggleQuickInsertMenu(quickInsertButton);
});
const settingsButton = document.createElement('button');
settingsButton.className = 'btn no-text btn-icon toolbar__button quick-reply-settings-btn';
settingsButton.title = 'Quick Reply Settings';
settingsButton.innerHTML = '⚙️';
settingsButton.addEventListener('click', e => {
e.stopPropagation();
createSettingsUI();
});
toolbar.appendChild(quickInsertButton);
toolbar.appendChild(settingsButton);
}
function toggleQuickInsertMenu(button) {
let menu = document.getElementById('quick-insert-menu');
if (menu) {
menu.remove();
return;
}
menu = createQuickInsertMenu();
document.body.appendChild(menu);
const rect = button.getBoundingClientRect();
menu.style.position = 'fixed';
menu.style.top = `${rect.bottom + 5}px`;
menu.style.left = `${rect.left}px`;
const removeMenu = ev => {
if (menu && !menu.contains(ev.target)) {
menu.remove();
document.removeEventListener('click', removeMenu);
}
};
setTimeout(() => document.addEventListener('click', removeMenu), 100);
}
function createQuickInsertMenu() {
const menu = document.createElement('div');
menu.id = 'quick-insert-menu';
menu.style.cssText = `
position: absolute;
background-color: var(--secondary);
border: 1px solid var(--primary-low-mid);
border-radius: 6px;
box-shadow: var(--d-shadow-medium);
z-index: 10000;
padding: 5px;
`;
quickReplies.forEach(reply => {
const item = document.createElement('div');
item.textContent = reply.display;
item.style.cssText = `
padding: 8px 12px;
cursor: pointer;
color: var(--primary-high);
border-radius: 4px;
`;
item.onmouseover = () => item.style.backgroundColor = 'var(--d-hover)';
item.onmouseout = () => item.style.backgroundColor = 'transparent';
item.addEventListener('click', () => {
insertIntoEditor(reply.insert);
toggleQuickInsertMenu(); // Close menu
});
menu.appendChild(item);
});
return menu;
}
function insertIntoEditor(text) {
const textarea = document.querySelector('textarea.d-editor-input, textarea.ember-text-area');
if (textarea) {
const start = textarea.selectionStart;
const end = textarea.selectionEnd;
textarea.value = textarea.value.substring(0, start) + text + textarea.value.substring(end);
textarea.selectionStart = textarea.selectionEnd = start + text.length;
textarea.focus();
textarea.dispatchEvent(new Event('input', { bubbles: true }));
} else {
document.execCommand('insertText', false, text);
}
}
// --- Suggestion Box Functions ---
function createSuggestionBox() {
if (suggestionBox) return;
suggestionBox = document.createElement('div');
suggestionBox.id = 'callout-suggestion-box';
document.body.appendChild(suggestionBox);
const style = document.createElement('style');
style.textContent = `
#callout-suggestion-box {
position: absolute;
background-color: var(--secondary);
border: 1px solid var(--primary-low-mid);
border-radius: 6px;
box-shadow: var(--d-shadow-medium);
z-index: 999999;
padding: 5px;
display: none;
}
.callout-suggestion-item {
padding: 8px 12px;
cursor: pointer;
color: var(--primary-high);
border-radius: 4px;
}
.callout-suggestion-item.active {
background-color: var(--d-hover) !important;
}
`;
document.head.appendChild(style);
}
function hideSuggestionBox() {
if (suggestionBox) suggestionBox.style.display = 'none';
}
function updateSuggestionBox(element, matches) {
if (!suggestionBox || matches.length === 0) {
hideSuggestionBox();
return;
}
suggestionBox.innerHTML = matches.map((reply, index) =>
`<div class="callout-suggestion-item" data-index="${index}">${reply.display}</div>`
).join('');
suggestionBox.querySelectorAll('.callout-suggestion-item').forEach((item, index) => {
item.addEventListener('mousedown', e => {
e.preventDefault();
applyCompletion(element, matches[index]);
hideSuggestionBox();
});
});
const cursorPos = getCursorXY(element);
suggestionBox.style.display = 'block';
suggestionBox.style.left = `${cursorPos.x}px`;
suggestionBox.style.top = `${cursorPos.bottom}px`;
activeSuggestionIndex = 0;
updateActiveSuggestion();
}
function updateActiveSuggestion() {
if (!suggestionBox) return;
const items = suggestionBox.querySelectorAll('.callout-suggestion-item');
items.forEach((item, idx) => {
item.classList.toggle('active', idx === activeSuggestionIndex);
if (idx === activeSuggestionIndex) {
item.scrollIntoView({ block: 'nearest' });
}
});
}
function handleInput(event) {
const target = event.target;
if (!(target instanceof HTMLTextAreaElement)) return;
const textBeforeCursor = target.value.substring(0, target.selectionStart);
const matches = quickReplies.filter(reply => textBeforeCursor.endsWith(reply.prefix));
if (matches.length > 0) {
updateSuggestionBox(target, matches);
} else {
hideSuggestionBox();
}
}
function handleKeydown(event) {
if (!suggestionBox || suggestionBox.style.display === 'none') return;
const items = suggestionBox.querySelectorAll('.callout-suggestion-item');
if (items.length === 0) return;
if (['ArrowDown', 'ArrowUp', 'Enter', 'Escape'].includes(event.key)) {
event.preventDefault();
event.stopPropagation();
}
switch (event.key) {
case 'ArrowDown':
activeSuggestionIndex = (activeSuggestionIndex + 1) % items.length;
updateActiveSuggestion();
break;
case 'ArrowUp':
activeSuggestionIndex = (activeSuggestionIndex - 1 + items.length) % items.length;
updateActiveSuggestion();
break;
case 'Enter':
const selectedItem = suggestionBox.querySelector(`.callout-suggestion-item[data-index="${activeSuggestionIndex}"]`);
if (selectedItem) {
const textBeforeCursor = document.activeElement.value.substring(0, document.activeElement.selectionStart);
const matches = quickReplies.filter(reply => textBeforeCursor.endsWith(reply.prefix));
if (matches.length > 0) {
applyCompletion(document.activeElement, matches[activeSuggestionIndex]);
}
}
hideSuggestionBox();
break;
case 'Escape':
hideSuggestionBox();
break;
}
}
function applyCompletion(element, selectedReply) {
const text = element.value;
const selectionStart = element.selectionStart;
const textBeforeCursor = text.substring(0, selectionStart);
const triggerIndex = textBeforeCursor.lastIndexOf(selectedReply.prefix);
if (triggerIndex !== -1) {
const textAfter = text.substring(selectionStart);
element.value = text.substring(0, triggerIndex) + selectedReply.insert + textAfter;
const newCursorPos = triggerIndex + selectedReply.insert.length;
element.selectionStart = element.selectionEnd = newCursorPos;
element.dispatchEvent(new Event('input', { bubbles: true }));
}
}
function getCursorXY(element) {
const mirrorId = 'textarea-mirror-div';
let mirror = document.getElementById(mirrorId);
if (!mirror) {
mirror = document.createElement('div');
mirror.id = mirrorId;
document.body.appendChild(mirror);
}
const style = window.getComputedStyle(element);
const props = ['fontFamily', 'fontSize', 'fontWeight', 'lineHeight', 'padding', 'border'];
props.forEach(p => mirror.style[p] = style[p]);
mirror.style.position = 'absolute';
mirror.style.visibility = 'hidden';
mirror.style.whiteSpace = 'pre-wrap';
mirror.style.wordWrap = 'break-word';
mirror.style.left = `${element.offsetLeft}px`;
mirror.style.top = `${element.offsetTop}px`;
mirror.style.width = `${element.clientWidth}px`;
mirror.style.height = 'auto';
const textUpToCursor = element.value.substring(0, element.selectionEnd);
mirror.textContent = textUpToCursor;
const span = document.createElement('span');
span.textContent = '.';
mirror.appendChild(span);
const rect = element.getBoundingClientRect();
const spanRect = span.getBoundingClientRect();
return {
x: rect.left + span.offsetLeft,
y: rect.top + span.offsetTop,
bottom: rect.top + span.offsetTop + span.offsetHeight,
};
}
// --- Settings UI ---
function createSettingsUI() {
let modal = document.getElementById('quick-reply-settings-modal');
if (modal) {
modal.remove();
return;
}
modal = document.createElement('div');
modal.id = 'quick-reply-settings-modal';
modal.style.cssText = `
position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%);
width: 600px; max-width: 90vw; max-height: 80vh;
background-color: var(--secondary);
color: var(--primary-high);
border: 1px solid var(--primary-low-mid);
border-radius: 8px;
z-index: 10001;
box-shadow: var(--d-shadow-huge);
display: flex; flex-direction: column;
`;
const header = document.createElement('div');
header.textContent = 'Quick Reply Settings';
header.style.cssText = 'font-size: 1.2em; padding: 15px; border-bottom: 1px solid var(--primary-low-mid);';
const content = document.createElement('div');
content.id = 'quick-reply-list-container';
content.style.cssText = 'padding: 15px; overflow-y: auto;';
const footer = document.createElement('div');
footer.style.cssText = 'padding: 15px; border-top: 1px solid var(--primary-low-mid); display: flex; justify-content: space-between; align-items: center;';
const addButton = document.createElement('button');
addButton.textContent = 'Add New';
addButton.className = 'btn';
addButton.onclick = () => {
quickReplies.push({ display: 'New Reply', insert: '', prefix: ''});
renderQuickReplyList(content);
};
const saveButton = document.createElement('button');
saveButton.textContent = 'Save and Close';
saveButton.className = 'btn btn-primary';
saveButton.onclick = () => {
saveQuickReplies();
modal.remove();
};
footer.appendChild(addButton);
footer.appendChild(saveButton);
modal.appendChild(header);
modal.appendChild(content);
modal.appendChild(footer);
document.body.appendChild(modal);
renderQuickReplyList(content);
}
function renderQuickReplyList(container) {
container.innerHTML = '';
quickReplies.forEach((reply, index) => {
const item = document.createElement('div');
item.style.cssText = 'display: flex; align-items: center; margin-bottom: 10px; gap: 10px;';
const inputs = ['display', 'insert', 'prefix'].map(key => {
const input = document.createElement('input');
input.type = 'text';
input.placeholder = key.charAt(0).toUpperCase() + key.slice(1);
input.value = reply[key];
input.style.cssText = `
flex: 1;
padding: 8px;
background-color: var(--input-background);
border: 1px solid var(--primary-low-mid);
color: var(--primary-high);
border-radius: 5px;
`;
input.oninput = () => quickReplies[index][key] = input.value;
return input;
});
const deleteButton = document.createElement('button');
deleteButton.textContent = 'Delete';
deleteButton.className = 'btn btn-danger';
deleteButton.onclick = () => {
quickReplies.splice(index, 1);
renderQuickReplyList(container);
};
inputs.forEach(input => item.appendChild(input));
item.appendChild(deleteButton);
container.appendChild(item);
});
}
})();