mirror of
https://github.com/Maks1mS/bubbles.git
synced 2024-12-25 07:04:37 +03:00
206 lines
5.7 KiB
Go
206 lines
5.7 KiB
Go
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package list
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import (
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"fmt"
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"io"
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"github.com/charmbracelet/bubbles/key"
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tea "github.com/charmbracelet/bubbletea"
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"github.com/charmbracelet/lipgloss"
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"github.com/muesli/reflow/truncate"
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)
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// DefaultItemStyles defines styling for a default list item.
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// See DefaultItemView for when these come into play.
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type DefaultItemStyles struct {
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// The Normal state.
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NormalTitle lipgloss.Style
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NormalDesc lipgloss.Style
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// The selected item state.
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SelectedTitle lipgloss.Style
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SelectedDesc lipgloss.Style
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// The dimmed state, for when the filter input is initially activated.
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DimmedTitle lipgloss.Style
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DimmedDesc lipgloss.Style
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// Charcters matching the current filter, if any.
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FilterMatch lipgloss.Style
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}
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// NewDefaultItemStyles returns style definitions for a default item. See
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// DefaultItemView for when these come into play.
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func NewDefaultItemStyles() (s DefaultItemStyles) {
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s.NormalTitle = lipgloss.NewStyle().
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Foreground(lipgloss.AdaptiveColor{Light: "#1a1a1a", Dark: "#dddddd"}).
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Padding(0, 0, 0, 2)
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s.NormalDesc = s.NormalTitle.Copy().
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Foreground(lipgloss.AdaptiveColor{Light: "#A49FA5", Dark: "#777777"})
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s.SelectedTitle = lipgloss.NewStyle().
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Border(lipgloss.NormalBorder(), false, false, false, true).
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BorderForeground(lipgloss.AdaptiveColor{Light: "#F793FF", Dark: "#AD58B4"}).
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Foreground(lipgloss.AdaptiveColor{Light: "#EE6FF8", Dark: "#EE6FF8"}).
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Padding(0, 0, 0, 1)
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s.SelectedDesc = s.SelectedTitle.Copy().
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Foreground(lipgloss.AdaptiveColor{Light: "#F793FF", Dark: "#AD58B4"})
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s.DimmedTitle = lipgloss.NewStyle().
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Foreground(lipgloss.AdaptiveColor{Light: "#A49FA5", Dark: "#777777"}).
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Padding(0, 0, 0, 2)
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s.DimmedDesc = s.DimmedTitle.Copy().
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Foreground(lipgloss.AdaptiveColor{Light: "#C2B8C2", Dark: "#4D4D4D"})
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s.FilterMatch = lipgloss.NewStyle().Underline(true)
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return s
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}
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// DefaultItem describes an items designed to work with DefaultDelegate.
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type DefaultItem interface {
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Item
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Title() string
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Description() string
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}
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// DefaultDelegate is a standard delegate designed to work in lists. It's
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// styled by DefaultItemStyles, which can be customized as you like.
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//
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// The description line can be hidden by setting Description to false, which
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// renders the list as single-line-items. The spacing between items can be set
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// with the SetSpacing method.
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//
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// Setting UpdateFunc is optional. If it's set it will be called when the
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// ItemDelegate called, which is called when the list's Update function is
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// invoked.
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//
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// Settings ShortHelpFunc and FullHelpFunc is optional. They can can be set to
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// include items in the list's default short and full help menus.
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type DefaultDelegate struct {
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ShowDescription bool
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Styles DefaultItemStyles
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UpdateFunc func(tea.Msg, *Model) tea.Cmd
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ShortHelpFunc func() []key.Binding
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FullHelpFunc func() [][]key.Binding
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spacing int
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}
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// NewDefaultDelegate creates a new delegate with default styles.
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func NewDefaultDelegate() DefaultDelegate {
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return DefaultDelegate{
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ShowDescription: true,
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Styles: NewDefaultItemStyles(),
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spacing: 1,
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}
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}
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// Height returns the delegate's preferred height.
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func (d DefaultDelegate) Height() int {
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if d.ShowDescription {
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return 2 //nolint:gomnd
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}
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return 1
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}
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// SetSpacing set the delegate's spacing.
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func (d *DefaultDelegate) SetSpacing(i int) {
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d.spacing = i
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}
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// Spacing returns the delegate's spacing.
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func (d DefaultDelegate) Spacing() int {
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return d.spacing
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}
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// Update checks whether the delegate's UpdateFunc is set and calls it.
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func (d DefaultDelegate) Update(msg tea.Msg, m *Model) tea.Cmd {
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if d.UpdateFunc == nil {
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return nil
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}
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return d.UpdateFunc(msg, m)
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}
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// Render prints an item.
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func (d DefaultDelegate) Render(w io.Writer, m Model, index int, item Item) {
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var (
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title, desc string
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matchedRunes []int
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s = &d.Styles
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)
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if i, ok := item.(DefaultItem); ok {
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title = i.Title()
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desc = i.Description()
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} else {
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return
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}
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// Prevent text from exceeding list width
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if m.width > 0 {
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textwidth := uint(m.width - s.NormalTitle.GetPaddingLeft() - s.NormalTitle.GetPaddingRight())
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title = truncate.StringWithTail(title, textwidth, ellipsis)
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desc = truncate.StringWithTail(desc, textwidth, ellipsis)
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}
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// Conditions
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var (
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isSelected = index == m.Index()
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emptyFilter = m.FilterState() == Filtering && m.FilterValue() == ""
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isFiltered = m.FilterState() == Filtering || m.FilterState() == FilterApplied
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)
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if isFiltered && index < len(m.filteredItems) {
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// Get indices of matched characters
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matchedRunes = m.MatchesForItem(index)
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}
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if emptyFilter {
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title = s.DimmedTitle.Render(title)
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desc = s.DimmedDesc.Render(desc)
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} else if isSelected && m.FilterState() != Filtering {
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if isFiltered {
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// Highlight matches
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unmatched := s.SelectedTitle.Inline(true)
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matched := unmatched.Copy().Inherit(s.FilterMatch)
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title = lipgloss.StyleRunes(title, matchedRunes, matched, unmatched)
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}
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title = s.SelectedTitle.Render(title)
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desc = s.SelectedDesc.Render(desc)
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} else {
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if isFiltered {
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// Highlight matches
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unmatched := s.NormalTitle.Inline(true)
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matched := unmatched.Copy().Inherit(s.FilterMatch)
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title = lipgloss.StyleRunes(title, matchedRunes, matched, unmatched)
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}
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title = s.NormalTitle.Render(title)
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desc = s.NormalDesc.Render(desc)
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}
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if d.ShowDescription {
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fmt.Fprintf(w, "%s\n%s", title, desc)
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return
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}
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fmt.Fprintf(w, "%s", title)
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}
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// ShortHelp returns the delegate's short help.
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func (d DefaultDelegate) ShortHelp() []key.Binding {
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if d.ShortHelpFunc != nil {
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return d.ShortHelpFunc()
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}
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return nil
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}
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// FullHelp returns the delegate's full help.
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func (d DefaultDelegate) FullHelp() [][]key.Binding {
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if d.FullHelpFunc != nil {
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return d.FullHelpFunc()
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}
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return nil
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}
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