Mercurial
diff .cms/lib/codemirror/addon/scroll/scrollpastend.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/addon/scroll/scrollpastend.js Fri Oct 11 22:40:23 2024 +0000 @@ -0,0 +1,48 @@ +// CodeMirror, copyright (c) by Marijn Haverbeke and others +// Distributed under an MIT license: https://codemirror.net/5/LICENSE + +(function(mod) { + if (typeof exports == "object" && typeof module == "object") // CommonJS + mod(require("../../lib/codemirror")); + else if (typeof define == "function" && define.amd) // AMD + define(["../../lib/codemirror"], mod); + else // Plain browser env + mod(CodeMirror); +})(function(CodeMirror) { + "use strict"; + + CodeMirror.defineOption("scrollPastEnd", false, function(cm, val, old) { + if (old && old != CodeMirror.Init) { + cm.off("change", onChange); + cm.off("refresh", updateBottomMargin); + cm.display.lineSpace.parentNode.style.paddingBottom = ""; + cm.state.scrollPastEndPadding = null; + } + if (val) { + cm.on("change", onChange); + cm.on("refresh", updateBottomMargin); + updateBottomMargin(cm); + } + }); + + function onChange(cm, change) { + if (CodeMirror.changeEnd(change).line == cm.lastLine()) + updateBottomMargin(cm); + } + + function updateBottomMargin(cm) { + var padding = ""; + if (cm.lineCount() > 1) { + var totalH = cm.display.scroller.clientHeight - 30, + lastLineH = cm.getLineHandle(cm.lastLine()).height; + padding = (totalH - lastLineH) + "px"; + } + if (cm.state.scrollPastEndPadding != padding) { + cm.state.scrollPastEndPadding = padding; + cm.display.lineSpace.parentNode.style.paddingBottom = padding; + cm.off("refresh", updateBottomMargin); + cm.setSize(); + cm.on("refresh", updateBottomMargin); + } + } +});