overleaf/services/web/frontend/js/features/source-editor/commands/indent.ts

51 lines
1.4 KiB
TypeScript
Raw Normal View History

import { EditorSelection } from '@codemirror/state'
import { getIndentUnit, indentString, indentUnit } from '@codemirror/language'
import { EditorView } from '@codemirror/view'
export const indentMore = (view: EditorView) => {
if (view.state.readOnly) {
return false
}
view.dispatch(
view.state.changeByRange(range => {
const doc = view.state.doc
const changes = []
if (range.empty) {
// insert space(s) at the cursor
const line = doc.lineAt(range.from)
const unit = getIndentUnit(view.state)
const offset = range.from - line.from
const cols = unit - (offset % unit)
const insert = indentString(view.state, cols)
changes.push({ from: range.from, insert })
} else {
// indent selected lines
const insert = view.state.facet(indentUnit)
let previousLineNumber = -1
for (let pos = range.from; pos <= range.to; pos++) {
const line = doc.lineAt(pos)
if (previousLineNumber === line.number) {
continue
}
changes.push({ from: line.from, insert })
previousLineNumber = line.number
}
}
const changeSet = view.state.changes(changes)
return {
changes: changeSet,
range: EditorSelection.range(
changeSet.mapPos(range.anchor, 1),
changeSet.mapPos(range.head, 1)
),
}
})
)
return true
}