Mercurial
comparison .cms/lib/codemirror/src/edit/deleteNearSelection.js @ 0:78edf6b517a0 draft
24.10
| author | Coffee CMS <info@coffee-cms.ru> |
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| date | Fri, 11 Oct 2024 22:40:23 +0000 |
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| children |
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| -1:000000000000 | 0:78edf6b517a0 |
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| 1 import { runInOp } from "../display/operations.js" | |
| 2 import { ensureCursorVisible } from "../display/scrolling.js" | |
| 3 import { cmp } from "../line/pos.js" | |
| 4 import { replaceRange } from "../model/changes.js" | |
| 5 import { lst } from "../util/misc.js" | |
| 6 | |
| 7 // Helper for deleting text near the selection(s), used to implement | |
| 8 // backspace, delete, and similar functionality. | |
| 9 export function deleteNearSelection(cm, compute) { | |
| 10 let ranges = cm.doc.sel.ranges, kill = [] | |
| 11 // Build up a set of ranges to kill first, merging overlapping | |
| 12 // ranges. | |
| 13 for (let i = 0; i < ranges.length; i++) { | |
| 14 let toKill = compute(ranges[i]) | |
| 15 while (kill.length && cmp(toKill.from, lst(kill).to) <= 0) { | |
| 16 let replaced = kill.pop() | |
| 17 if (cmp(replaced.from, toKill.from) < 0) { | |
| 18 toKill.from = replaced.from | |
| 19 break | |
| 20 } | |
| 21 } | |
| 22 kill.push(toKill) | |
| 23 } | |
| 24 // Next, remove those actual ranges. | |
| 25 runInOp(cm, () => { | |
| 26 for (let i = kill.length - 1; i >= 0; i--) | |
| 27 replaceRange(cm.doc, "", kill[i].from, kill[i].to, "+delete") | |
| 28 ensureCursorVisible(cm) | |
| 29 }) | |
| 30 } |