51 lines
1.4 KiB
Go
51 lines
1.4 KiB
Go
// Copyright (c) 2017-2026 Lethean (https://lt.hn)
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//
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// Licensed under the European Union Public Licence (EUPL) version 1.2.
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// SPDX-License-Identifier: EUPL-1.2
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package tui
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import (
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"dappco.re/go/core"
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tea "github.com/charmbracelet/bubbletea"
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cli "dappco.re/go/core/cli/pkg/cli"
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)
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// Compile-time check: KeyHintsModel implements cli.FrameModel.
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var _ cli.FrameModel = (*KeyHintsModel)(nil)
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var defaultHints = []string{"↑/↓ select", "enter view", "q quit"}
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// KeyHintsModel displays context-sensitive key hints in the footer region.
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type KeyHintsModel struct {
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hints []string
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}
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// NewKeyHintsModel creates a KeyHintsModel with the default key hints.
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func NewKeyHintsModel() *KeyHintsModel {
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return &KeyHintsModel{hints: defaultHints}
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}
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// Init returns nil; no initialisation command is needed.
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func (m *KeyHintsModel) Init() tea.Cmd { return nil }
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// Update handles incoming messages. On ViewChangedMsg it replaces the
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// displayed hints; all other messages are ignored.
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func (m *KeyHintsModel) Update(msg tea.Msg) (cli.FrameModel, tea.Cmd) {
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switch msg := msg.(type) {
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case ViewChangedMsg:
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m.hints = msg.Hints
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}
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return m, nil
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}
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// View renders a single-line hint bar separated by vertical bars.
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// The output is truncated to width if it would overflow.
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func (m *KeyHintsModel) View(width, height int) string {
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line := " " + core.Join(" \u2502 ", m.hints...)
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if len(line) > width && width > 0 {
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line = line[:width]
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}
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return line
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}
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