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A unified calculator tool with chat history and draggable UI.
// ==UserScript==
// @name Advanced Calculator
// @namespace https://greasyfork.org/en/users/1291009
// @version 6.1.5
// @description A unified calculator tool with chat history and draggable UI.
// @author BadOrBest
// @license MIT
// @icon https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcQE4akrlePwM0brye6bimtz0ziOengL_C9rhQ&s
// @match *://*/*
// @grant GM_addStyle
// @grant GM_setValue
// @grant GM_getValue
// @grant GM_deleteValue
// @grant GM_registerMenuCommand
// @run-at document-end
// ==/UserScript==
(function() {
'use strict';
// Load external libraries
const scriptLoad = url => new Promise((resolve, reject) => {
const script = document.createElement('script');
script.src = url;
script.onload = resolve;
script.onerror = reject;
document.head.appendChild(script);
});
Promise.all([
scriptLoad('https://cdnjs.cloudflare.com/ajax/libs/mathjs/13.1.1/math.min.js'),
scriptLoad('https://cdnjs.cloudflare.com/ajax/libs/localforage/1.10.0/localforage.min.js')
]).then(() => {
console.log('Libraries loaded successfully.');
initCalculator();
}).catch(error => console.error('Error loading libraries:', error));
// General settings
const settings = {
theme: GM_getValue('theme', 'dark'),
historyPageSize: GM_getValue('historyPageSize', 50),
interpretXAsMultiply: GM_getValue('interpretXAsMultiply', true) // Default to true
};
// Calculator Initialization
function initCalculator() {
const MAX_MESSAGES = 400;
const STORAGE_KEY = 'chatHistory';
let lastResult = null; // Store the last result
const chatBox = document.createElement('div');
chatBox.id = 'calculator-chat-box';
Object.assign(chatBox.style, {
position: 'fixed',
bottom: '10vh',
right: '5vw',
width: 'calc(90vw - 10px)',
maxWidth: '350px',
backgroundColor: settings.theme === 'dark' ? '#1f1f1f' : '#f9f9f9',
borderRadius: '12px',
padding: '10px',
boxShadow: '0 0 15px rgba(0, 0, 0, 0.3)',
zIndex: '9999',
display: 'flex',
flexDirection: 'column',
fontFamily: 'Arial, sans-serif'
});
const chatHeader = document.createElement('div');
chatHeader.style.display = 'flex';
chatHeader.style.justifyContent = 'space-between';
chatHeader.style.alignItems = 'center';
chatHeader.style.backgroundColor = settings.theme === 'dark' ? '#333' : '#ddd';
chatHeader.style.color = settings.theme === 'dark' ? '#fff' : '#333';
chatHeader.style.padding = '10px';
chatHeader.style.borderRadius = '10px 10px 0 0';
chatHeader.style.fontWeight = 'bold';
chatHeader.textContent = 'Advanced Calculator';
const collapseButton = document.createElement('button');
collapseButton.textContent = '▼';
collapseButton.style.padding = '5px 10px';
collapseButton.style.border = 'none';
collapseButton.style.backgroundColor = '#555';
collapseButton.style.color = '#fff';
collapseButton.style.cursor = 'pointer';
collapseButton.style.borderRadius = '5px';
collapseButton.addEventListener('click', toggleChatBox);
chatHeader.appendChild(collapseButton);
chatBox.appendChild(chatHeader);
const chatHistory = document.createElement('div');
chatHistory.id = 'chat-history';
Object.assign(chatHistory.style, {
height: '300px',
overflowY: 'auto',
backgroundColor: settings.theme === 'dark' ? '#333' : '#fff',
color: settings.theme === 'dark' ? '#fff' : '#333',
padding: '10px',
borderRadius: '8px'
});
chatBox.appendChild(chatHistory);
const chatInput = document.createElement('input');
chatInput.id = 'chat-input';
chatInput.type = 'text';
Object.assign(chatInput.style, {
width: 'calc(100% - 20px)',
padding: '10px',
margin: '10px auto',
borderRadius: '10px',
border: 'none',
backgroundColor: '#444',
color: 'white'
});
chatInput.placeholder = 'Type here...';
chatInput.addEventListener('keydown', event => {
if (event.key === 'Enter') {
event.preventDefault();
if (chatInput.value.trim() === '') {
if (lastResult !== null) {
chatInput.value = lastResult; // Insert the last result into the input field
}
} else {
sendMessage();
}
}
});
chatBox.appendChild(chatInput);
// Draggable functionality
let isDragging = false;
let initialX, initialY;
let offsetX = 0, offsetY = 0;
chatBox.addEventListener('mousedown', startDragging);
chatBox.addEventListener('touchstart', startDragging);
document.addEventListener('mousemove', drag);
document.addEventListener('touchmove', drag);
document.addEventListener('mouseup', stopDragging);
document.addEventListener('touchend', stopDragging);
function startDragging(event) {
if (event.target === chatInput) return;
event.preventDefault();
initialX = event.clientX - offsetX;
initialY = event.clientY - offsetY;
isDragging = true;
chatBox.classList.add('chat-dragging');
document.addEventListener('mousemove', drag); // Attach listeners only on start
document.addEventListener('touchmove', drag);
}
function drag(event) {
if (!isDragging) return;
event.preventDefault();
const currentX = event.clientX - initialX;
const currentY = event.clientY - initialY;
offsetX = currentX;
offsetY = currentY;
chatBox.style.transform = `translate(${currentX}px, ${currentY}px)`;
}
function stopDragging() {
isDragging = false;
chatBox.classList.remove('chat-dragging');
document.removeEventListener('mousemove', drag); // Detach listeners on stop
document.removeEventListener('touchmove', drag);
}
function toggleChatBox() {
if (chatBox.style.height === '70px') {
chatBox.style.height = 'auto';
collapseButton.textContent = '▼';
chatInput.style.display = 'block';
} else {
chatBox.style.height = '70px';
collapseButton.textContent = '▲';
chatInput.style.display = 'none';
}
}
// Function to load messages from localStorage
function loadMessagesFromStorage() {
let messages = [];
try {
messages = JSON.parse(localStorage.getItem(STORAGE_KEY)) || [];
} catch (error) {
console.error('Error loading chat history from localStorage:', error);
clearLocalStorage();
}
return messages;
}
// Function to clear localStorage
function clearLocalStorage() {
try {
localStorage.removeItem(STORAGE_KEY);
} catch (error) {
console.error('Error clearing localStorage:', error);
}
}
// Function to add message to conversation and save to localStorage
function addMessage(message, isInput) {
const messageElement = document.createElement('div');
messageElement.className = 'message ' + (isInput ? 'input' : 'output');
messageElement.innerHTML = message;
chatHistory.appendChild(messageElement);
if (!isInput) {
const line = document.createElement('hr');
line.style.borderTop = '1px solid white';
line.style.margin = '5px 0';
chatHistory.appendChild(line);
}
function scrollToBottom() {
chatHistory.scrollTop = chatHistory.scrollHeight;
}
scrollToBottom();
let messages = loadMessagesFromStorage();
messages.push({ message: message, isInput: isInput });
if (messages.length > MAX_MESSAGES) {
messages = messages.slice(-MAX_MESSAGES);
}
try {
localStorage.setItem(STORAGE_KEY, JSON.stringify(messages));
} catch (error) {
if (error.name === 'QuotaExceededError') {
console.error('LocalStorage is full, clearing oldest messages.');
messages.shift(); // Remove the oldest message and try saving again
localStorage.setItem(STORAGE_KEY, JSON.stringify(messages));
} else {
console.error('Error saving chat history:', error);
clearLocalStorage();
}
}
}
function sendMessage() {
const expression = chatInput.value.trim();
if (expression !== '') {
addMessage('<span class="user-label">(User):</span> ' + expression, true);
evaluateExpression(expression);
chatInput.value = '';
}
}
function evaluateExpression(expression) {
try {
if (settings.interpretXAsMultiply) {
expression = expression.replace(/(\d+)\s*x\s*(\d+)/gi, '$1*$2'); // Handles better
}
const result = math.evaluate(expression);
addMessage('<span class="result-label">(Result):</span> ' + result, false);
lastResult = result; // Store the result for reuse
} catch (error) {
addMessage('<span class="result-label">(Result):</span> Error: ' + error.message, false);
}
}
window.addEventListener('load', () => {
// Prevent duplicate loading of messages
chatHistory.innerHTML = ''; // Clear existing content before loading new messages
loadMessagesFromStorage().forEach(msg => {
addMessage(msg.message, msg.isInput);
});
scrollToBottom();
});
GM_registerMenuCommand('Clear Chat History', clearLocalStorage);
GM_registerMenuCommand('Toggle x as multiply/variable', () => {
settings.interpretXAsMultiply = !settings.interpretXAsMultiply;
GM_setValue('interpretXAsMultiply', settings.interpretXAsMultiply);
alert(`x is now interpreted as ${settings.interpretXAsMultiply ? 'multiplication' : 'variable'}.`);
});
GM_addStyle(`
#calculator-chat-box {
font-family: Arial, sans-serif;
box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
}
#calculator-chat-box .message {
clear: both;
padding: 5px 10px;
color: white;
}
#calculator-chat-box .input {
text-align: left;
}
#calculator-chat-box .result-label {
float: left;
margin-left: 5px;
background-color: #1a73e8; /* Improved contrast */
color: white;
border-radius: 10px;
padding: 3px 6px;
}
#calculator-chat-box .user-label {
float: left;
margin-left: 5px;
background-color: #34a853; /* Improved contrast */
color: white;
border-radius: 10px;
padding: 3px 6px;
}
#calculator-chat-box hr {
border-top: 1px solid white;
margin: 5px 0;
}
#calculator-chat-box.chat-dragging {
cursor: move;
}
`);
document.body.appendChild(chatBox);
}
})();