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comparison .cms/lib/codemirror/src/display/highlight_worker.js @ 0:78edf6b517a0 draft

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24.10
author Coffee CMS <info@coffee-cms.ru>
date Fri, 11 Oct 2024 22:40:23 +0000
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-1:000000000000 0:78edf6b517a0
1 import { getContextBefore, highlightLine, processLine } from "../line/highlight.js"
2 import { copyState } from "../modes.js"
3 import { bind } from "../util/misc.js"
4
5 import { runInOp } from "./operations.js"
6 import { regLineChange } from "./view_tracking.js"
7
8 // HIGHLIGHT WORKER
9
10 export function startWorker(cm, time) {
11 if (cm.doc.highlightFrontier < cm.display.viewTo)
12 cm.state.highlight.set(time, bind(highlightWorker, cm))
13 }
14
15 function highlightWorker(cm) {
16 let doc = cm.doc
17 if (doc.highlightFrontier >= cm.display.viewTo) return
18 let end = +new Date + cm.options.workTime
19 let context = getContextBefore(cm, doc.highlightFrontier)
20 let changedLines = []
21
22 doc.iter(context.line, Math.min(doc.first + doc.size, cm.display.viewTo + 500), line => {
23 if (context.line >= cm.display.viewFrom) { // Visible
24 let oldStyles = line.styles
25 let resetState = line.text.length > cm.options.maxHighlightLength ? copyState(doc.mode, context.state) : null
26 let highlighted = highlightLine(cm, line, context, true)
27 if (resetState) context.state = resetState
28 line.styles = highlighted.styles
29 let oldCls = line.styleClasses, newCls = highlighted.classes
30 if (newCls) line.styleClasses = newCls
31 else if (oldCls) line.styleClasses = null
32 let ischange = !oldStyles || oldStyles.length != line.styles.length ||
33 oldCls != newCls && (!oldCls || !newCls || oldCls.bgClass != newCls.bgClass || oldCls.textClass != newCls.textClass)
34 for (let i = 0; !ischange && i < oldStyles.length; ++i) ischange = oldStyles[i] != line.styles[i]
35 if (ischange) changedLines.push(context.line)
36 line.stateAfter = context.save()
37 context.nextLine()
38 } else {
39 if (line.text.length <= cm.options.maxHighlightLength)
40 processLine(cm, line.text, context)
41 line.stateAfter = context.line % 5 == 0 ? context.save() : null
42 context.nextLine()
43 }
44 if (+new Date > end) {
45 startWorker(cm, cm.options.workDelay)
46 return true
47 }
48 })
49 doc.highlightFrontier = context.line
50 doc.modeFrontier = Math.max(doc.modeFrontier, context.line)
51 if (changedLines.length) runInOp(cm, () => {
52 for (let i = 0; i < changedLines.length; i++)
53 regLineChange(cm, changedLines[i], "text")
54 })
55 }