Mercurial
diff .cms/lib/codemirror/src/display/highlight_worker.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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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/.cms/lib/codemirror/src/display/highlight_worker.js Fri Oct 11 22:40:23 2024 +0000 @@ -0,0 +1,55 @@ +import { getContextBefore, highlightLine, processLine } from "../line/highlight.js" +import { copyState } from "../modes.js" +import { bind } from "../util/misc.js" + +import { runInOp } from "./operations.js" +import { regLineChange } from "./view_tracking.js" + +// HIGHLIGHT WORKER + +export function startWorker(cm, time) { + if (cm.doc.highlightFrontier < cm.display.viewTo) + cm.state.highlight.set(time, bind(highlightWorker, cm)) +} + +function highlightWorker(cm) { + let doc = cm.doc + if (doc.highlightFrontier >= cm.display.viewTo) return + let end = +new Date + cm.options.workTime + let context = getContextBefore(cm, doc.highlightFrontier) + let changedLines = [] + + doc.iter(context.line, Math.min(doc.first + doc.size, cm.display.viewTo + 500), line => { + if (context.line >= cm.display.viewFrom) { // Visible + let oldStyles = line.styles + let resetState = line.text.length > cm.options.maxHighlightLength ? copyState(doc.mode, context.state) : null + let highlighted = highlightLine(cm, line, context, true) + if (resetState) context.state = resetState + line.styles = highlighted.styles + let oldCls = line.styleClasses, newCls = highlighted.classes + if (newCls) line.styleClasses = newCls + else if (oldCls) line.styleClasses = null + let ischange = !oldStyles || oldStyles.length != line.styles.length || + oldCls != newCls && (!oldCls || !newCls || oldCls.bgClass != newCls.bgClass || oldCls.textClass != newCls.textClass) + for (let i = 0; !ischange && i < oldStyles.length; ++i) ischange = oldStyles[i] != line.styles[i] + if (ischange) changedLines.push(context.line) + line.stateAfter = context.save() + context.nextLine() + } else { + if (line.text.length <= cm.options.maxHighlightLength) + processLine(cm, line.text, context) + line.stateAfter = context.line % 5 == 0 ? context.save() : null + context.nextLine() + } + if (+new Date > end) { + startWorker(cm, cm.options.workDelay) + return true + } + }) + doc.highlightFrontier = context.line + doc.modeFrontier = Math.max(doc.modeFrontier, context.line) + if (changedLines.length) runInOp(cm, () => { + for (let i = 0; i < changedLines.length; i++) + regLineChange(cm, changedLines[i], "text") + }) +}