Mercurial
diff .cms/lib/codemirror/src/edit/global_events.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/edit/global_events.js Fri Oct 11 22:40:23 2024 +0000 @@ -0,0 +1,45 @@ +import { onBlur } from "../display/focus.js" +import { on } from "../util/event.js" + +// These must be handled carefully, because naively registering a +// handler for each editor will cause the editors to never be +// garbage collected. + +function forEachCodeMirror(f) { + if (!document.getElementsByClassName) return + let byClass = document.getElementsByClassName("CodeMirror"), editors = [] + for (let i = 0; i < byClass.length; i++) { + let cm = byClass[i].CodeMirror + if (cm) editors.push(cm) + } + if (editors.length) editors[0].operation(() => { + for (let i = 0; i < editors.length; i++) f(editors[i]) + }) +} + +let globalsRegistered = false +export function ensureGlobalHandlers() { + if (globalsRegistered) return + registerGlobalHandlers() + globalsRegistered = true +} +function registerGlobalHandlers() { + // When the window resizes, we need to refresh active editors. + let resizeTimer + on(window, "resize", () => { + if (resizeTimer == null) resizeTimer = setTimeout(() => { + resizeTimer = null + forEachCodeMirror(onResize) + }, 100) + }) + // When the window loses focus, we want to show the editor as blurred + on(window, "blur", () => forEachCodeMirror(onBlur)) +} +// Called when the window resizes +function onResize(cm) { + let d = cm.display + // Might be a text scaling operation, clear size caches. + d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null + d.scrollbarsClipped = false + cm.setSize() +}