path_suggest.go RawHistoryFolder

1package modes
2
3import "github.com/patriceckhart/zot/packages/tui"
4
5// pathChoicePopup is shown after a repeated Tab reaches an ambiguous
6// filesystem prefix. It deliberately owns only the transient choice state;
7// the editor remains the source of truth for the prompt text.
8type pathChoicePopup struct {
9	completion pathCompletionResult
10	cursor     int
11}
12
13func newPathChoicePopup() *pathChoicePopup { return &pathChoicePopup{} }
14
15func (p *pathChoicePopup) Open(completion pathCompletionResult) {
16	if p == nil {
17		return
18	}
19	p.completion = completion
20	p.cursor = 0
21}
22
23func (p *pathChoicePopup) Reset() {
24	if p == nil {
25		return
26	}
27	p.completion = pathCompletionResult{}
28	p.cursor = 0
29}
30
31func (p *pathChoicePopup) Active(input string) bool {
32	if p == nil || len(p.completion.entries) <= 1 {
33		return false
34	}
35	start := len(input)
36	for start > 0 {
37		r := input[start-1]
38		if r == ' ' || r == '\t' || r == '\n' {
39			break
40		}
41		start--
42	}
43	if start != p.completion.tokenStart || input[start:] != p.completion.token {
44		p.Reset()
45		return false
46	}
47	return true
48}
49
50func (p *pathChoicePopup) Up() {
51	if p.cursor > 0 {
52		p.cursor--
53	}
54}
55
56func (p *pathChoicePopup) Down() {
57	if p.cursor < len(p.completion.entries)-1 {
58		p.cursor++
59	}
60}
61
62// Select replaces the unchanged path token with the highlighted match. It
63// returns false when the editor no longer contains the token that opened the
64// popup, in which case the caller should let the key continue normally.
65func (p *pathChoicePopup) Select(ed *tui.Editor) bool {
66	if ed == nil || !p.Active(ed.Value()) {
67		return false
68	}
69	if p.cursor < 0 || p.cursor >= len(p.completion.entries) {
70		p.cursor = 0
71	}
72	entry := p.completion.entries[p.cursor]
73	newToken := p.completion.displayParent + entry.name
74	if entry.isDir {
75		newToken += "/"
76	}
77	value := ed.Value()
78	ed.SetValue(value[:p.completion.tokenStart] + newToken)
79	p.Reset()
80	return true
81}
82
83// Render returns the candidate list and a short key hint. The list is kept
84// intentionally small and plain: it complements the existing slash and @
85// popups without introducing a second completion model or a new dependency.
86func (p *pathChoicePopup) Render(th tui.Theme, width int) []string {
87	if p == nil || len(p.completion.entries) <= 1 {
88		return nil
89	}
90	header := "  " + p.completion.displayParent + p.completion.basePrefix
91	lines := []string{th.FG256(th.Muted, header), ""}
92	const maxVisible = 12
93	visible := p.completion.entries
94	offset := 0
95	if len(visible) > maxVisible {
96		if p.cursor >= maxVisible {
97			offset = p.cursor - maxVisible + 1
98		}
99		end := offset + maxVisible
100		if end > len(visible) {
101			end = len(visible)
102			offset = end - maxVisible
103		}
104		visible = visible[offset:end]
105	}
106	for idx, entry := range visible {
107		idx += offset
108		name := entry.name
109		if entry.isDir {
110			name += "/"
111		}
112		plain := "  " + name
113		if idx == p.cursor {
114			lines = append(lines, th.PadHighlight(plain, width))
115		} else {
116			lines = append(lines, th.FG256(th.Muted, plain))
117		}
118	}
119	lines = append(lines, "", th.FG256(th.Muted, "  ↑/↓ navigate - tab/enter complete - esc cancel"), "")
120	return lines
121}