| 1 | /* The name box and the formula bar. |
| 2 | * |
| 3 | * The formula bar shows the selected cell's INPUT while the grid shows |
| 4 | * its computed value. That difference is the whole point: it is what |
| 5 | * makes this a spreadsheet rather than a table of numbers, and it is |
| 6 | * the reliable way to read a formula — the in-cell editor swap is best |
| 7 | * effort by design. |
| 8 | * |
| 9 | * Nothing here evaluates or formats anything. Committing posts the raw |
| 10 | * text and paints whatever the server sends back. |
| 11 | */ |
| 12 | (function () { |
| 13 | 'use strict'; |
| 14 | |
| 15 | var box = document.querySelector('[data-name-box]'); |
| 16 | var bar = document.querySelector('[data-formula-input]'); |
| 17 | var size = document.querySelector('[data-selection-size]'); |
| 18 | if (!bar && !box) return; |
| 19 | |
| 20 | /* colName turns 0 into A, 25 into Z, 26 into AA. Written out rather |
| 21 | * than borrowed from the library so the name box agrees with the |
| 22 | * column headers even if the vendored grid is ever swapped. */ |
| 23 | function colName(c) { |
| 24 | var s = ''; |
| 25 | c += 1; |
| 26 | while (c > 0) { |
| 27 | var rem = (c - 1) % 26; |
| 28 | s = String.fromCharCode(65 + rem) + s; |
| 29 | c = Math.floor((c - 1) / 26); |
| 30 | } |
| 31 | return s; |
| 32 | } |
| 33 | |
| 34 | function colIndex(name) { |
| 35 | var n = 0; |
| 36 | for (var i = 0; i < name.length; i++) { |
| 37 | n = n * 26 + (name.charCodeAt(i) - 64); |
| 38 | } |
| 39 | return n - 1; |
| 40 | } |
| 41 | |
| 42 | function refOf(sel) { |
| 43 | var a = colName(sel.c) + (sel.r + 1); |
| 44 | if (sel.r === sel.r2 && sel.c === sel.c2) return a; |
| 45 | return a + ':' + colName(sel.c2) + (sel.r2 + 1); |
| 46 | } |
| 47 | |
| 48 | /* parseRef accepts A1 or A1:C3, case-insensitively. null for anything |
| 49 | * else, which the caller turns into "put back what was there" — a |
| 50 | * name box that silently jumped somewhere on a typo would be worse |
| 51 | * than one that appears to ignore you. */ |
| 52 | function parseRef(text) { |
| 53 | var m = /^\s*([A-Za-z]{1,3})(\d{1,7})(?::([A-Za-z]{1,3})(\d{1,7}))?\s*$/.exec(text); |
| 54 | if (!m) return null; |
| 55 | var out = { |
| 56 | c: colIndex(m[1].toUpperCase()), r: parseInt(m[2], 10) - 1, |
| 57 | c2: colIndex((m[3] || m[1]).toUpperCase()), r2: parseInt(m[4] || m[2], 10) - 1 |
| 58 | }; |
| 59 | var g = window.SheetsGrid; |
| 60 | if (out.r < 0 || out.c < 0) return null; |
| 61 | if (g && (out.r2 >= g.rows || out.c2 >= g.cols)) return null; |
| 62 | return out; |
| 63 | } |
| 64 | |
| 65 | function describe(sel) { |
| 66 | if (!size) return; |
| 67 | var n = (Math.abs(sel.r2 - sel.r) + 1) * (Math.abs(sel.c2 - sel.c) + 1); |
| 68 | /* The COUNT, never a total. A sum here would be the client doing |
| 69 | * arithmetic on strings the server rendered for display, which is |
| 70 | * exactly the business this design keeps out of JavaScript. */ |
| 71 | size.textContent = n > 1 ? n + ' cells' : ''; |
| 72 | } |
| 73 | |
| 74 | function ready() { |
| 75 | var g = window.SheetsGrid; |
| 76 | if (!g) return; |
| 77 | |
| 78 | g.onSelection(function (sel) { |
| 79 | if (!sel) return; |
| 80 | if (box && document.activeElement !== box) box.value = refOf(sel); |
| 81 | if (bar && document.activeElement !== bar) bar.value = g.rawAt(sel.r, sel.c); |
| 82 | describe(sel); |
| 83 | }); |
| 84 | |
| 85 | if (box) { |
| 86 | box.addEventListener('keydown', function (e) { |
| 87 | if (e.key === 'Escape') { |
| 88 | var sel = g.selection(); |
| 89 | if (sel) box.value = refOf(sel); |
| 90 | g.focus(); |
| 91 | return; |
| 92 | } |
| 93 | if (e.key !== 'Enter') return; |
| 94 | e.preventDefault(); |
| 95 | var want = parseRef(box.value); |
| 96 | var ws = g.worksheet(); |
| 97 | if (!want || !ws || !ws.updateSelectionFromCoords) { |
| 98 | var back = g.selection(); |
| 99 | if (back) box.value = refOf(back); |
| 100 | return; |
| 101 | } |
| 102 | ws.updateSelectionFromCoords(want.c, want.r, want.c2, want.r2); |
| 103 | g.focus(); |
| 104 | }); |
| 105 | } |
| 106 | |
| 107 | if (!bar || bar.readOnly) return; |
| 108 | |
| 109 | bar.addEventListener('keydown', function (e) { |
| 110 | // Keep the grid's document handler from treating bar typing as a cell edit. |
| 111 | e.stopPropagation(); |
| 112 | var sel = g.selection(); |
| 113 | if (!sel) return; |
| 114 | |
| 115 | if (e.key === 'Escape') { |
| 116 | e.preventDefault(); |
| 117 | bar.value = g.rawAt(sel.r, sel.c); |
| 118 | g.focus(); |
| 119 | return; |
| 120 | } |
| 121 | /* Enter commits and moves down, Tab commits and moves right — |
| 122 | * the two motions every spreadsheet has, and the reason typing a |
| 123 | * column of numbers never needs the mouse. */ |
| 124 | var down = e.key === 'Enter'; |
| 125 | var right = e.key === 'Tab' && !e.shiftKey; |
| 126 | if (!down && !right) return; |
| 127 | e.preventDefault(); |
| 128 | |
| 129 | g.write(sel.r, sel.c, bar.value); |
| 130 | var ws = g.worksheet(); |
| 131 | if (ws && ws.updateSelectionFromCoords) { |
| 132 | var r = Math.min(sel.r + (down ? 1 : 0), g.rows - 1); |
| 133 | var c = Math.min(sel.c + (right ? 1 : 0), g.cols - 1); |
| 134 | ws.updateSelectionFromCoords(c, r, c, r); |
| 135 | } |
| 136 | g.focus(); |
| 137 | }); |
| 138 | } |
| 139 | |
| 140 | if (window.SheetsGrid) ready(); |
| 141 | else document.addEventListener('sheets:ready', ready, { once: true }); |
| 142 | }()); |
| 143 | |
amadan