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Signed-off-by: Bryce Palmer <everettraven@gmail.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,147 @@ | ||
| package models | ||
|
|
||
| import ( | ||
| "strings" | ||
|
|
||
| "github.com/charmbracelet/bubbles/key" | ||
| tea "github.com/charmbracelet/bubbletea" | ||
| "github.com/charmbracelet/lipgloss" | ||
| "github.com/everettraven/buoy/pkg/charm/styles" | ||
| ) | ||
|
|
||
| type Tab struct { | ||
| Name string | ||
| Model tea.Model | ||
| } | ||
|
|
||
| type Tabber struct { | ||
| tabs []Tab | ||
| selected int | ||
| keyMap TabberKeyMap | ||
| width int | ||
| } | ||
|
|
||
| func NewTabber(keyMap TabberKeyMap, tabs ...Tab) *Tabber { | ||
| return &Tabber{ | ||
| tabs: tabs, | ||
| keyMap: keyMap, | ||
| } | ||
| } | ||
|
|
||
| func (t *Tabber) Init() tea.Cmd { | ||
| return nil | ||
| } | ||
|
|
||
| func (t *Tabber) Update(msg tea.Msg) (*Tabber, tea.Cmd) { | ||
| var cmd tea.Cmd | ||
| switch msg := msg.(type) { | ||
| case tea.KeyMsg: | ||
| switch { | ||
| case key.Matches(msg, t.keyMap.TabRight): | ||
| t.selected++ | ||
| if t.selected > len(t.tabs)-1 { | ||
| t.selected = 0 | ||
| } | ||
| case key.Matches(msg, t.keyMap.TabLeft): | ||
| t.selected-- | ||
| if t.selected < 0 { | ||
| t.selected = len(t.tabs) - 1 | ||
| } | ||
| } | ||
| case tea.WindowSizeMsg: | ||
| t.width = msg.Width | ||
| } | ||
|
|
||
| t.tabs[t.selected].Model, cmd = t.tabs[t.selected].Model.Update(msg) | ||
| return t, cmd | ||
| } | ||
|
|
||
| func (t *Tabber) View() string { | ||
| tabRightArrow := styles.TabGap().Render(" ▶ ") | ||
| tabLeftArrow := styles.TabGap().Render(" ◀ ") | ||
|
|
||
| pager := &pager{ | ||
| tabRightArrow: tabRightArrow, | ||
| tabLeftArrow: tabLeftArrow, | ||
| pages: []page{}, | ||
| } | ||
| pager.setPages(t.tabs, t.selected, t.width) | ||
|
|
||
| tabBlock := pager.renderForSelectedTab(t.selected) | ||
| // gap is a repeating of the spaces so that the bottom border continues the entire width | ||
| // of the terminal. This allows it to look like a proper set of tabs | ||
| gap := styles.TabGap().Render(strings.Repeat(" ", max(0, t.width-lipgloss.Width(tabBlock)-2))) | ||
| tabsWithBorder := lipgloss.JoinHorizontal(lipgloss.Bottom, tabBlock, gap) | ||
| content := styles.ContentStyle().Render(t.tabs[t.selected].Model.View()) | ||
| return lipgloss.JoinVertical(0, tabsWithBorder, content) | ||
| } | ||
|
|
||
| type TabberKeyMap struct { | ||
| TabRight key.Binding | ||
| TabLeft key.Binding | ||
| } | ||
|
|
||
| var DefaultTabberKeys = TabberKeyMap{ | ||
| TabRight: key.NewBinding( | ||
| key.WithKeys("tab"), | ||
| key.WithHelp("tab", "change tabs to the right"), | ||
| ), | ||
| TabLeft: key.NewBinding( | ||
| key.WithKeys("shift+tab"), | ||
| key.WithHelp("shift+tab", "change tabs to the left"), | ||
| ), | ||
| } | ||
|
|
||
| type page struct { | ||
| tabs []string | ||
| start int | ||
| end int | ||
| } | ||
|
|
||
| type pager struct { | ||
| pages []page | ||
| tabRightArrow string | ||
| tabLeftArrow string | ||
| } | ||
|
|
||
| func (p *pager) renderForSelectedTab(selected int) string { | ||
| tabPage := page{} | ||
| for _, page := range p.pages { | ||
| if page.start <= selected && page.end >= selected { | ||
| tabPage = page | ||
| } | ||
| } | ||
|
|
||
| tabBlock := lipgloss.JoinHorizontal(lipgloss.Top, tabPage.tabs...) | ||
| if len(p.pages) > 1 { | ||
| tabBlock = lipgloss.JoinHorizontal(lipgloss.Bottom, p.tabLeftArrow, tabBlock, p.tabRightArrow) | ||
| } | ||
|
|
||
| return tabBlock | ||
| } | ||
|
|
||
| func (p *pager) setPages(tabs []Tab, selected int, width int) { | ||
| tabPages := []page{} | ||
| tempTab := "" | ||
| tempPage := page{start: 0, tabs: []string{}} | ||
| for i, tab := range tabs { | ||
| renderedTab := styles.TabStyle().Render(tab.Name) | ||
| if i == selected { | ||
| renderedTab = styles.SelectedTabStyle().Render(tab.Name) | ||
| } | ||
| tempTab = lipgloss.JoinHorizontal(lipgloss.Top, tempTab, renderedTab) | ||
| if lipgloss.Width(lipgloss.JoinHorizontal(lipgloss.Top, p.tabLeftArrow, tempTab, p.tabRightArrow)) > width-2 { | ||
| tempPage.end = i | ||
| tabPages = append(tabPages, tempPage) | ||
| tempPage = page{start: i, tabs: []string{}} | ||
| tempTab = "" | ||
| } | ||
|
|
||
| tempPage.tabs = append(tempPage.tabs, renderedTab) | ||
| } | ||
| if tempTab != "" { | ||
| tempPage.end = len(tabs) - 1 | ||
| tabPages = append(tabPages, tempPage) | ||
| } | ||
| p.pages = tabPages | ||
| } |