init layout, notifications, tabs & more

Signed-off-by: Hadi <112569860+anotherhadi@users.noreply.github.com>

examples/layout/fullapp/main.go

@@ -0,0 +1,88 @@
+// Command fullapp demonstrates a more realistic app shell: the sidebar
+// leaf isn't a plain placeholder pane, it's a full layout.Model of its own
+// (sidebar.New(), a themed list, see sidebar/sidebar.go) embedded exactly
+// like the "router" one below - layout.Model implements Pane, so any
+// package can hand back one to be wrapped in a Leaf, no adapter needed.
+//
+// It also owns the app's single notification.Model (see second/second.go,
+// which triggers toasts via notification.Show without ever holding a
+// reference to it) and composites its toasts over the whole rendered
+// layout, top-right - notification has no dependency on layout, so this is
+// the same Render(background string) pattern as examples/notification, just
+// with layout.Model.View() as the background instead of a plain string.
+//
+// Same story for the app's single modal.Model (see third/third.go), except
+// modal is composited last, on top of notif's own output: a modal is meant
+// to command the whole screen's attention, so it should flatten any toast
+// already showing to the same dim gray as everything else, not leave it
+// floating on top in full color.
+package main
+
+import (
+	"fmt"
+	"os"
+
+	tea "charm.land/bubbletea/v2"
+
+	"github.com/anotherhadi/ilovetui/examples/layout/fullapp/router"
+	"github.com/anotherhadi/ilovetui/examples/layout/fullapp/sidebar"
+	"github.com/anotherhadi/ilovetui/layout"
+	"github.com/anotherhadi/ilovetui/modal"
+	"github.com/anotherhadi/ilovetui/notification"
+)
+
+// model is the actual top-level tea.Model: layout itself reserves no quit
+// key (that's an app policy, not layout's to make), so the host wraps it
+// and handles ctrl+c/q itself, same as any other custom component in this
+// repo (see examples/tabs).
+type model struct {
+	layout layout.Model
+	notif  notification.Model
+	modal  modal.Model
+}
+
+func (m model) Init() tea.Cmd {
+	return tea.Batch(m.layout.Init(), m.notif.Init(), m.modal.Init())
+}
+
+func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
+	if key, ok := msg.(tea.KeyPressMsg); ok {
+		switch key.String() {
+		case "ctrl+c", "q":
+			return m, tea.Quit
+		}
+	}
+
+	updated, layoutCmd := m.layout.Update(msg)
+	m.layout = updated.(layout.Model)
+
+	var notifCmd, modalCmd tea.Cmd
+	m.notif, notifCmd = m.notif.Update(msg)
+	m.modal, modalCmd = m.modal.Update(msg)
+
+	return m, tea.Batch(layoutCmd, notifCmd, modalCmd)
+}
+
+func (m model) View() tea.View {
+	view := tea.NewView(m.modal.Render(m.notif.Render(m.layout.View())))
+	view.AltScreen = true
+	return view
+}
+
+func main() {
+	root := layout.HSplit(0.25,
+		layout.Leaf("sidebar", sidebar.New()),
+		layout.Leaf("router", router.New()),
+	).WithMaximum(20)
+
+	m := model{
+		layout: layout.New(root, layout.AsRoot()),
+		notif:  notification.New(notification.WithPosition(notification.TopRight)),
+		modal:  modal.New(),
+	}
+
+	if _, err := tea.NewProgram(m).Run(); err != nil {
+		fmt.Println("Error running program:", err)
+		os.Exit(1)
+	}
+}