0
|
1 import { getContextBefore } from "../line/highlight.js"
|
|
2 import { Pos } from "../line/pos.js"
|
|
3 import { getLine } from "../line/utils_line.js"
|
|
4 import { replaceRange } from "../model/changes.js"
|
|
5 import { Range } from "../model/selection.js"
|
|
6 import { replaceOneSelection } from "../model/selection_updates.js"
|
|
7 import { countColumn, Pass, spaceStr } from "../util/misc.js"
|
|
8
|
|
9 // Indent the given line. The how parameter can be "smart",
|
|
10 // "add"/null, "subtract", or "prev". When aggressive is false
|
|
11 // (typically set to true for forced single-line indents), empty
|
|
12 // lines are not indented, and places where the mode returns Pass
|
|
13 // are left alone.
|
|
14 export function indentLine(cm, n, how, aggressive) {
|
|
15 let doc = cm.doc, state
|
|
16 if (how == null) how = "add"
|
|
17 if (how == "smart") {
|
|
18 // Fall back to "prev" when the mode doesn't have an indentation
|
|
19 // method.
|
|
20 if (!doc.mode.indent) how = "prev"
|
|
21 else state = getContextBefore(cm, n).state
|
|
22 }
|
|
23
|
|
24 let tabSize = cm.options.tabSize
|
|
25 let line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize)
|
|
26 if (line.stateAfter) line.stateAfter = null
|
|
27 let curSpaceString = line.text.match(/^\s*/)[0], indentation
|
|
28 if (!aggressive && !/\S/.test(line.text)) {
|
|
29 indentation = 0
|
|
30 how = "not"
|
|
31 } else if (how == "smart") {
|
|
32 indentation = doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text)
|
|
33 if (indentation == Pass || indentation > 150) {
|
|
34 if (!aggressive) return
|
|
35 how = "prev"
|
|
36 }
|
|
37 }
|
|
38 if (how == "prev") {
|
|
39 if (n > doc.first) indentation = countColumn(getLine(doc, n-1).text, null, tabSize)
|
|
40 else indentation = 0
|
|
41 } else if (how == "add") {
|
|
42 indentation = curSpace + cm.options.indentUnit
|
|
43 } else if (how == "subtract") {
|
|
44 indentation = curSpace - cm.options.indentUnit
|
|
45 } else if (typeof how == "number") {
|
|
46 indentation = curSpace + how
|
|
47 }
|
|
48 indentation = Math.max(0, indentation)
|
|
49
|
|
50 let indentString = "", pos = 0
|
|
51 if (cm.options.indentWithTabs)
|
|
52 for (let i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t"}
|
|
53 if (pos < indentation) indentString += spaceStr(indentation - pos)
|
|
54
|
|
55 if (indentString != curSpaceString) {
|
|
56 replaceRange(doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input")
|
|
57 line.stateAfter = null
|
|
58 return true
|
|
59 } else {
|
|
60 // Ensure that, if the cursor was in the whitespace at the start
|
|
61 // of the line, it is moved to the end of that space.
|
|
62 for (let i = 0; i < doc.sel.ranges.length; i++) {
|
|
63 let range = doc.sel.ranges[i]
|
|
64 if (range.head.line == n && range.head.ch < curSpaceString.length) {
|
|
65 let pos = Pos(n, curSpaceString.length)
|
|
66 replaceOneSelection(doc, i, new Range(pos, pos))
|
|
67 break
|
|
68 }
|
|
69 }
|
|
70 }
|
|
71 }
|