Method setCursor

texteditor/nav.go:55–77

setCursor sets a new cursor position, enforcing it in range. This is the main final pathway for all cursor movement.

(pos lexer.Pos)

// setCursor sets a new cursor position, enforcing it in range.
// This is the main final pathway for all cursor movement.
func (ed *Editor) setCursor(pos lexer.Pos) {
	if ed.NumLines == 0 || ed.Buffer == nil {
		ed.CursorPos = lexer.PosZero
		return
	}

	ed.clearScopelights()
	ed.CursorPos = ed.Buffer.ValidPos(pos)
	ed.cursorMovedEvent()
	txt := ed.Buffer.Line(ed.CursorPos.Ln)
	ch := ed.CursorPos.Ch
	if ch < len(txt) {
		r := txt[ch]
		if r == '{' || r == '}' || r == '(' || r == ')' || r == '[' || r == ']' {
			tp, found := ed.Buffer.BraceMatch(txt[ch], ed.CursorPos)
			if found {
				ed.scopelights = append(ed.scopelights, text.NewRegionPos(ed.CursorPos, lexer.Pos{ed.CursorPos.Ln, ed.CursorPos.Ch + 1}))
				ed.scopelights = append(ed.scopelights, text.NewRegionPos(tp, lexer.Pos{tp.Ln, tp.Ch + 1}))
			}
		}
	}
	ed.NeedsRender()
}

// SetCursorShow sets a new cursor position, enforcing it in range, and shows
// the cursor (scroll to if hidden, render)