45 lines
1.5 KiB
JavaScript
45 lines
1.5 KiB
JavaScript
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import { elt, removeChildren } from "../util/dom.js"
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import { regChange } from "./view_tracking.js"
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import { alignHorizontally } from "./line_numbers.js"
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import { updateGutterSpace } from "./update_display.js"
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export function getGutters(gutters, lineNumbers) {
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let result = [], sawLineNumbers = false
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for (let i = 0; i < gutters.length; i++) {
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let name = gutters[i], style = null
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if (typeof name != "string") { style = name.style; name = name.className }
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if (name == "CodeMirror-linenumbers") {
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if (!lineNumbers) continue
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else sawLineNumbers = true
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}
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result.push({className: name, style})
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}
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if (lineNumbers && !sawLineNumbers) result.push({className: "CodeMirror-linenumbers", style: null})
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return result
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}
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// Rebuild the gutter elements, ensure the margin to the left of the
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// code matches their width.
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export function renderGutters(display) {
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let gutters = display.gutters, specs = display.gutterSpecs
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removeChildren(gutters)
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display.lineGutter = null
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for (let i = 0; i < specs.length; ++i) {
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let {className, style} = specs[i]
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let gElt = gutters.appendChild(elt("div", null, "CodeMirror-gutter " + className))
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if (style) gElt.style.cssText = style
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if (className == "CodeMirror-linenumbers") {
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display.lineGutter = gElt
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gElt.style.width = (display.lineNumWidth || 1) + "px"
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}
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}
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gutters.style.display = specs.length ? "" : "none"
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updateGutterSpace(display)
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}
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export function updateGutters(cm) {
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renderGutters(cm.display)
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regChange(cm)
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alignHorizontally(cm)
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}
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