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comparison .cms/lib/codemirror/src/display/line_numbers.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 { lineNumberFor } from "../line/utils_line.js"
2 import { compensateForHScroll } from "../measurement/position_measurement.js"
3 import { elt } from "../util/dom.js"
4
5 import { updateGutterSpace } from "./update_display.js"
6
7 // Re-align line numbers and gutter marks to compensate for
8 // horizontal scrolling.
9 export function alignHorizontally(cm) {
10 let display = cm.display, view = display.view
11 if (!display.alignWidgets && (!display.gutters.firstChild || !cm.options.fixedGutter)) return
12 let comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.doc.scrollLeft
13 let gutterW = display.gutters.offsetWidth, left = comp + "px"
14 for (let i = 0; i < view.length; i++) if (!view[i].hidden) {
15 if (cm.options.fixedGutter) {
16 if (view[i].gutter)
17 view[i].gutter.style.left = left
18 if (view[i].gutterBackground)
19 view[i].gutterBackground.style.left = left
20 }
21 let align = view[i].alignable
22 if (align) for (let j = 0; j < align.length; j++)
23 align[j].style.left = left
24 }
25 if (cm.options.fixedGutter)
26 display.gutters.style.left = (comp + gutterW) + "px"
27 }
28
29 // Used to ensure that the line number gutter is still the right
30 // size for the current document size. Returns true when an update
31 // is needed.
32 export function maybeUpdateLineNumberWidth(cm) {
33 if (!cm.options.lineNumbers) return false
34 let doc = cm.doc, last = lineNumberFor(cm.options, doc.first + doc.size - 1), display = cm.display
35 if (last.length != display.lineNumChars) {
36 let test = display.measure.appendChild(elt("div", [elt("div", last)],
37 "CodeMirror-linenumber CodeMirror-gutter-elt"))
38 let innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW
39 display.lineGutter.style.width = ""
40 display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding) + 1
41 display.lineNumWidth = display.lineNumInnerWidth + padding
42 display.lineNumChars = display.lineNumInnerWidth ? last.length : -1
43 display.lineGutter.style.width = display.lineNumWidth + "px"
44 updateGutterSpace(cm.display)
45 return true
46 }
47 return false
48 }