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| 1 | +<!DOCTYPE html> |
| 2 | +<html lang="en"> |
| 3 | +<head> |
| 4 | + <meta charset="UTF-8"> |
| 5 | + <meta name="viewport" content="width=device-width, initial-scale=1.0"> |
| 6 | + <title>GridXcel App</title> |
| 7 | + <style> |
| 8 | + body { |
| 9 | + font-family: Arial, sans-serif; |
| 10 | + margin: 0; |
| 11 | + padding: 0; |
| 12 | + display: flex; |
| 13 | + justify-content: center; |
| 14 | + align-items: center; |
| 15 | + height: 100vh; |
| 16 | + background-color: #f5f5f5; |
| 17 | + } |
| 18 | + |
| 19 | + table { |
| 20 | + border-collapse: collapse; |
| 21 | + width: 90%; |
| 22 | + overflow-x: auto; |
| 23 | + } |
| 24 | + |
| 25 | + td, th { |
| 26 | + width: 50px; |
| 27 | + height: 30px; |
| 28 | + border: 1px solid #ccc; |
| 29 | + text-align: center; |
| 30 | + vertical-align: middle; |
| 31 | + cursor: pointer; |
| 32 | + background-color: #fff; |
| 33 | + } |
| 34 | + |
| 35 | + input { |
| 36 | + width: 100%; |
| 37 | + height: 100%; |
| 38 | + border: none; |
| 39 | + text-align: center; |
| 40 | + background-color: transparent; |
| 41 | + } |
| 42 | + |
| 43 | + .selected { |
| 44 | + background-color: #d0e0f0; |
| 45 | + } |
| 46 | + </style> |
| 47 | +</head> |
| 48 | +<body> |
| 49 | + <table id="excelTable"> |
| 50 | + <!-- Table will be dynamically populated by JavaScript --> |
| 51 | + </table> |
| 52 | + |
| 53 | + <script> |
| 54 | + const rows = 5000; // Adjust the rows to a manageable number for testing |
| 55 | + const cols = 3000; // Adjust the columns to a manageable number for testing |
| 56 | + const table = document.getElementById('excelTable'); |
| 57 | + |
| 58 | + // Initialize table |
| 59 | + for (let i = 0; i < rows; i++) { |
| 60 | + const row = table.insertRow(); |
| 61 | + for (let j = 0; j < cols; j++) { |
| 62 | + const cell = row.insertCell(); |
| 63 | + const input = document.createElement('input'); |
| 64 | + input.type = 'text'; |
| 65 | + input.id = `cell-${i}-${j}`; |
| 66 | + input.addEventListener('input', updateFormula); |
| 67 | + cell.appendChild(input); |
| 68 | + } |
| 69 | + } |
| 70 | + |
| 71 | + // Handle formulas and update cell values |
| 72 | + function updateFormula(event) { |
| 73 | + const input = event.target; |
| 74 | + const [_, row, col] = input.id.split('-').map(Number); |
| 75 | + let value = input.value.trim(); |
| 76 | + |
| 77 | + // Simple formula parsing (for demonstration) |
| 78 | + if (value.startsWith('=') && value.length > 1) { |
| 79 | + value = parseFormula(value.slice(1), row, col); |
| 80 | + input.value = value; |
| 81 | + } |
| 82 | + |
| 83 | + // Simulate some basic formulas |
| 84 | + function parseFormula(formula, row, col) { |
| 85 | + const match = formula.match(/([A-Z]+)(\d+)/); |
| 86 | + if (match) { |
| 87 | + const formulaRow = parseInt(match[2]) - 1; |
| 88 | + const formulaCol = match[1].charCodeAt(0) - 65; |
| 89 | + const targetCell = document.getElementById(`cell-${formulaRow}-${formulaCol}`); |
| 90 | + return targetCell ? targetCell.value : ''; |
| 91 | + } |
| 92 | + return value; |
| 93 | + } |
| 94 | + } |
| 95 | + |
| 96 | + // Example of adding simple formula parsing for SUM |
| 97 | + function addFormula(row, col) { |
| 98 | + // Add formula handling logic here (e.g., SUM, AVERAGE, etc.) |
| 99 | + } |
| 100 | + </script> |
| 101 | +</body> |
| 102 | + </html> |
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