Method SetBuffer

texteditor/editor.go:326–351

SetBuffer sets the [Buffer] that this is an editor of, and interconnects their events.

(buf *Buffer)

// SetBuffer sets the [Buffer] that this is an editor of, and interconnects their events.
func (ed *Editor) SetBuffer(buf *Buffer) *Editor {
	if ed == nil || buf != nil && ed.Buffer == buf {
		return ed
	}
	// had := false
	if ed.Buffer != nil {
		// had = true
		ed.Buffer.deleteEditor(ed)
	}
	ed.Buffer = buf
	ed.resetState()
	if buf != nil {
		buf.addEditor(ed)
		bhl := len(buf.posHistory)
		if bhl > 0 {
			cp := buf.posHistory[bhl-1]
			ed.posHistoryIndex = bhl - 1
			ed.SetCursorShow(cp)
		} else {
			ed.SetCursorShow(lexer.Pos{})
		}
	}
	ed.layoutAllLines()
	ed.NeedsLayout()
	return ed
}

// linesInserted inserts new lines of text and reformats them
func (ed *Editor) linesInserted(tbe *text.Edit) {