From 2baf3859fd65b1877b461b033277763fa8b0bfe7 Mon Sep 17 00:00:00 2001
From: Martin <git@pander-on.de>
Date: Mon, 2 Feb 2026 19:47:18 +0100
Subject: [PATCH] Add tab bar

---
 common/styles.go | 17 ++++++++++++++++
 pages/main.go    | 51 ++++++++++++++++++++++++++++++++++++++++++++----
 2 files changed, 64 insertions(+), 4 deletions(-)

diff --git a/common/styles.go b/common/styles.go
index f9aec89..c660919 100644
--- a/common/styles.go
+++ b/common/styles.go
@@ -27,6 +27,10 @@ type Styles struct {
 	Form       *huh.Theme
 	TableStyle TableStyle
 
+	Tab       lipgloss.Style
+	ActiveTab lipgloss.Style
+	TabBar    lipgloss.Style
+
 	ColumnFocused lipgloss.Style
 	ColumnBlurred lipgloss.Style
 	ColumnInsert  lipgloss.Style
@@ -71,6 +75,19 @@ func NewStyles(config *taskwarrior.TWConfig) *Styles {
 
 	styles.Form = formTheme
 
+	styles.Tab = lipgloss.NewStyle().
+		Padding(0, 1).
+		Foreground(lipgloss.Color("240"))
+
+	styles.ActiveTab = styles.Tab.
+		Foreground(lipgloss.Color("252")).
+		Bold(true)
+
+	styles.TabBar = lipgloss.NewStyle().
+		Border(lipgloss.NormalBorder(), false, false, true, false).
+		BorderForeground(lipgloss.Color("240")).
+		MarginBottom(1)
+
 	styles.ColumnFocused = lipgloss.NewStyle().Border(lipgloss.RoundedBorder(), true).Padding(1)
 	styles.ColumnBlurred = lipgloss.NewStyle().Border(lipgloss.HiddenBorder(), true).Padding(1)
 	styles.ColumnInsert = lipgloss.NewStyle().Border(lipgloss.RoundedBorder(), true).Padding(1)
diff --git a/pages/main.go b/pages/main.go
index f659718..fdb6e3b 100644
--- a/pages/main.go
+++ b/pages/main.go
@@ -5,6 +5,7 @@ import (
 
 	"github.com/charmbracelet/bubbles/key"
 	tea "github.com/charmbracelet/bubbletea"
+	"github.com/charmbracelet/lipgloss"
 )
 
 type MainPage struct {
@@ -13,6 +14,9 @@ type MainPage struct {
 
 	taskPage common.Component
 	timePage common.Component
+	currentTab int
+	width      int
+	height     int
 }
 
 func NewMainPage(common *common.Common) *MainPage {
@@ -24,6 +28,7 @@ func NewMainPage(common *common.Common) *MainPage {
 	m.timePage = NewTimePage(common)
 
 	m.activePage = m.taskPage
+	m.currentTab = 0
 
 	return m
 }
@@ -37,17 +42,39 @@ func (m *MainPage) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 
 	switch msg := msg.(type) {
 	case tea.WindowSizeMsg:
+		m.width = msg.Width
+		m.height = msg.Height
 		m.common.SetSize(msg.Width, msg.Height)
+
+		tabHeight := lipgloss.Height(m.renderTabBar())
+		contentHeight := msg.Height - tabHeight
+		if contentHeight < 0 {
+			contentHeight = 0
+		}
+
+		newMsg := tea.WindowSizeMsg{Width: msg.Width, Height: contentHeight}
+		activePage, cmd := m.activePage.Update(newMsg)
+		m.activePage = activePage.(common.Component)
+		return m, cmd
+
 	case tea.KeyMsg:
 		// Only handle tab key for page switching when at the top level (no subpages active)
 		if key.Matches(msg, m.common.Keymap.Next) && !m.common.HasSubpages() {
 			if m.activePage == m.taskPage {
 				m.activePage = m.timePage
+				m.currentTab = 1
 			} else {
 				m.activePage = m.taskPage
+				m.currentTab = 0
 			}
-			// Re-size the new active page just in case
-			m.activePage.SetSize(m.common.Width(), m.common.Height())
+
+			tabHeight := lipgloss.Height(m.renderTabBar())
+			contentHeight := m.height - tabHeight
+			if contentHeight < 0 {
+				contentHeight = 0
+			}
+			m.activePage.SetSize(m.width, contentHeight)
+
 			// Trigger a refresh/init on switch? Maybe not needed if we keep state.
 			// But we might want to refresh data.
 			return m, m.activePage.Init()
@@ -60,6 +87,22 @@ func (m *MainPage) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 	return m, cmd
 }
 
-func (m *MainPage) View() string {
-	return m.activePage.View()
+func (m *MainPage) renderTabBar() string {
+	var tabs []string
+	headers := []string{"Tasks", "Time"}
+
+	for i, header := range headers {
+		style := m.common.Styles.Tab
+		if m.currentTab == i {
+			style = m.common.Styles.ActiveTab
+		}
+		tabs = append(tabs, style.Render(header))
+	}
+
+	row := lipgloss.JoinHorizontal(lipgloss.Top, tabs...)
+	return m.common.Styles.TabBar.Width(m.common.Width()).Render(row)
+}
+
+func (m *MainPage) View() string {
+	return lipgloss.JoinVertical(lipgloss.Left, m.renderTabBar(), m.activePage.View())
 }