Mercurial
diff .cms/lib/codemirror/src/input/indent.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/input/indent.js Fri Oct 11 22:40:23 2024 +0000 @@ -0,0 +1,71 @@ +import { getContextBefore } from "../line/highlight.js" +import { Pos } from "../line/pos.js" +import { getLine } from "../line/utils_line.js" +import { replaceRange } from "../model/changes.js" +import { Range } from "../model/selection.js" +import { replaceOneSelection } from "../model/selection_updates.js" +import { countColumn, Pass, spaceStr } from "../util/misc.js" + +// Indent the given line. The how parameter can be "smart", +// "add"/null, "subtract", or "prev". When aggressive is false +// (typically set to true for forced single-line indents), empty +// lines are not indented, and places where the mode returns Pass +// are left alone. +export function indentLine(cm, n, how, aggressive) { + let doc = cm.doc, state + if (how == null) how = "add" + if (how == "smart") { + // Fall back to "prev" when the mode doesn't have an indentation + // method. + if (!doc.mode.indent) how = "prev" + else state = getContextBefore(cm, n).state + } + + let tabSize = cm.options.tabSize + let line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize) + if (line.stateAfter) line.stateAfter = null + let curSpaceString = line.text.match(/^\s*/)[0], indentation + if (!aggressive && !/\S/.test(line.text)) { + indentation = 0 + how = "not" + } else if (how == "smart") { + indentation = doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text) + if (indentation == Pass || indentation > 150) { + if (!aggressive) return + how = "prev" + } + } + if (how == "prev") { + if (n > doc.first) indentation = countColumn(getLine(doc, n-1).text, null, tabSize) + else indentation = 0 + } else if (how == "add") { + indentation = curSpace + cm.options.indentUnit + } else if (how == "subtract") { + indentation = curSpace - cm.options.indentUnit + } else if (typeof how == "number") { + indentation = curSpace + how + } + indentation = Math.max(0, indentation) + + let indentString = "", pos = 0 + if (cm.options.indentWithTabs) + for (let i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t"} + if (pos < indentation) indentString += spaceStr(indentation - pos) + + if (indentString != curSpaceString) { + replaceRange(doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input") + line.stateAfter = null + return true + } else { + // Ensure that, if the cursor was in the whitespace at the start + // of the line, it is moved to the end of that space. + for (let i = 0; i < doc.sel.ranges.length; i++) { + let range = doc.sel.ranges[i] + if (range.head.line == n && range.head.ch < curSpaceString.length) { + let pos = Pos(n, curSpaceString.length) + replaceOneSelection(doc, i, new Range(pos, pos)) + break + } + } + } +}