11 Commits

Author SHA1 Message Date
9b83333275 Extract routes to getRoutes() function
All checks were successful
CI / build (push) Successful in 26s
Address review feedback to eliminate duplicated route configuration
and prevent potential inconsistencies.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-01-09 16:35:33 +00:00
3bd0659caf Add auth-protected app example
This example demonstrates OIDC authentication with the Iris framework:
- OIDC client setup and configuration
- Login/logout flow with async discovery
- Protected routes using auth guards
- User profile display from ID token claims
- Token information display and handling
- Reactive UI state for authentication status

Closes #7

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-01-09 16:35:33 +00:00
7393778453 Remove unused responseWriter struct
All checks were successful
CI / build (push) Successful in 30s
Address review feedback to remove dead code.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-01-09 16:34:16 +00:00
89efc9b41d Add hot reload for development
Implement automatic rebuild and browser reload during development:

- File watcher monitors .go files for changes with configurable extensions
- Builder compiles Go source to WASM on file changes
- LiveReload WebSocket server notifies connected browsers to reload
- DevServer combines all components for easy development setup
- HTML injection adds reload script automatically

Usage:
  dev := host.NewDevServer("public", "index.html", ".", "public/app.wasm")
  dev.ListenAndServe(":8080")

Closes #9

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-01-09 16:34:16 +00:00
9642fd008e Remove internal package import from todo example
All checks were successful
CI / build (push) Successful in 27s
Replace direct internal/element usage with public ui package
components to ensure examples only use the public API:

- Add ui.RawCheckbox for plain checkbox without label wrapper
- Add ui.Span for span elements with text content
- Add View.TextDecoration modifier for strikethrough styling
- Update todo example to use these public components

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-01-09 16:29:57 +00:00
505fa0f84a Add todo list example
This example demonstrates Iris reactive patterns:
- Signal holding a slice/list of todos
- Adding and removing items dynamically
- Component composition (inputRow, todoList, todoItem)
- Input handling with TextInput and Enter key support
- Conditional rendering (empty state, strikethrough for completed)

Closes #5

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-01-09 16:29:57 +00:00
d3ed52e4a6 Remove accidentally committed binary
All checks were successful
CI / build (push) Successful in 28s
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-01-09 16:28:30 +00:00
f67347688b Add decrement button to counter example
Address review feedback to include a decrement button that
demonstrates reactive updates in both directions.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-01-09 16:28:30 +00:00
7cd276a5e5 Add counter example demonstrating signals
Basic example showing:
- Creating a signal with NewSignal
- Reading value with Get()
- Writing value with Set()
- Button click handler
- Reactive text that updates when signal changes

Closes #4

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-01-09 16:28:30 +00:00
27f0154bc9 Add dashboard example showing realistic admin panel
All checks were successful
CI / build (push) Successful in 28s
This example demonstrates all key Iris features for internal tool teams:
- Multiple pages with client-side routing
- Auth-protected sections with route guards
- Reactive data display with signals
- Form inputs (text, checkbox, slider, select)
- Component composition with reusable layouts

Test credentials: admin/admin (full access) or user/user (limited access)

Closes #8

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-01-09 16:11:37 +00:00
a13e215e31 Add multi-page app example demonstrating navigation
All checks were successful
CI / build (pull_request) Successful in 27s
CI / build (push) Successful in 28s
Add a comprehensive example showing client-side routing:
- Router setup with multiple routes (/, /about, /users, /admin)
- Route parameters (/users/:id) with the NumericIdGuard
- Navigation using Link component and programmatic Navigate/Back
- Route guards with AuthGuard for protected admin page
- Browser history integration with back/forward support

Closes #6

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-01-09 17:01:47 +01:00
8 changed files with 1615 additions and 1 deletions

418
examples/auth/main.go Normal file
View File

@@ -0,0 +1,418 @@
//go:build js && wasm
// Package main demonstrates OIDC authentication with Iris.
//
// This example shows:
// - OIDC client setup
// - Login/logout flow
// - Protected routes with auth guard
// - Displaying user info
// - Token handling
package main
import (
"encoding/base64"
"encoding/json"
"strings"
"syscall/js"
"git.flowmade.one/flowmade-one/iris/auth"
"git.flowmade.one/flowmade-one/iris/navigation"
"git.flowmade.one/flowmade-one/iris/reactive"
"git.flowmade.one/flowmade-one/iris/ui"
)
// Configuration - in production, these would come from environment/config
const (
// OIDC provider configuration
// Update these values for your OIDC provider (e.g., Dex, Keycloak, Auth0)
OIDCIssuer = "https://dex.example.com"
ClientID = "iris-example-app"
RedirectURI = "http://localhost:8080/callback"
)
var (
// Global OIDC client
oidcClient *auth.OIDCClient
// Reactive state for authentication
isAuthenticated = reactive.NewSignal(false)
currentUser = reactive.NewSignal[*UserDisplay](nil)
authError = reactive.NewSignal("")
isLoading = reactive.NewSignal(false)
// Font presets
fontTitle = ui.NewFont().Size("32px").Weight("700")
fontHeading = ui.NewFont().Size("20px").Weight("600")
)
// UserDisplay holds user information for display
type UserDisplay struct {
Email string
Name string
Sub string
}
func main() {
// Initialize OIDC client
oidcClient = auth.NewOIDCClient(OIDCIssuer, ClientID, RedirectURI)
// Check for existing tokens on startup
checkExistingSession()
// Check if this is an OAuth callback
if isCallbackPath() {
handleOAuthCallback()
return
}
router := navigation.NewRouter(getRoutes())
router.SetNotFoundHandler(notFoundView)
navigation.SetGlobalRouter(router)
// Create the main app with router
ui.NewAppWithRouter(router)
// Keep the application running
select {}
}
// getRoutes returns the route configuration for the application
func getRoutes() []navigation.Route {
return []navigation.Route{
{
Path: "/",
Handler: homeView,
},
{
Path: "/callback",
Handler: callbackView,
},
{
Path: "/profile",
Handler: profileView,
Guards: []navigation.RouteGuard{authGuard()},
},
{
Path: "/protected",
Handler: protectedView,
Guards: []navigation.RouteGuard{authGuard()},
},
}
}
// checkExistingSession checks for existing valid tokens
func checkExistingSession() {
if oidcClient.IsAuthenticated() {
isAuthenticated.Set(true)
loadUserFromToken()
}
}
// isCallbackPath checks if current path is the OAuth callback
func isCallbackPath() bool {
pathname := js.Global().Get("window").Get("location").Get("pathname").String()
search := js.Global().Get("window").Get("location").Get("search").String()
return pathname == "/callback" && strings.Contains(search, "code=")
}
// handleOAuthCallback processes the OAuth callback
func handleOAuthCallback() {
isLoading.Set(true)
// Discover OIDC configuration and handle callback
oidcClient.DiscoverConfigAsync(OIDCIssuer, func(err error) {
if err != nil {
authError.Set("Failed to load OIDC configuration: " + err.Error())
isLoading.Set(false)
renderApp()
return
}
// Exchange code for tokens
tokens, err := oidcClient.HandleCallback(OIDCIssuer)
if err != nil {
authError.Set("Authentication failed: " + err.Error())
isLoading.Set(false)
renderApp()
return
}
// Store tokens
oidcClient.StoreTokens(tokens)
isAuthenticated.Set(true)
loadUserFromToken()
isLoading.Set(false)
// Clear URL parameters and redirect to home
js.Global().Get("window").Get("history").Call("replaceState", nil, "", "/")
renderApp()
})
}
// renderApp initializes and renders the app after callback processing
func renderApp() {
router := navigation.NewRouter(getRoutes())
router.SetNotFoundHandler(notFoundView)
navigation.SetGlobalRouter(router)
ui.NewAppWithRouter(router)
select {}
}
// loadUserFromToken extracts user info from the ID token
func loadUserFromToken() {
tokens := oidcClient.GetStoredTokens()
if tokens == nil || tokens.IDToken == "" {
return
}
// Parse the ID token to get user info (JWT payload is the second part)
parts := strings.Split(tokens.IDToken, ".")
if len(parts) != 3 {
return
}
// Decode the payload
payload, err := base64.RawURLEncoding.DecodeString(parts[1])
if err != nil {
return
}
var claims struct {
Sub string `json:"sub"`
Email string `json:"email"`
Name string `json:"name"`
}
if err := json.Unmarshal(payload, &claims); err != nil {
return
}
currentUser.Set(&UserDisplay{
Email: claims.Email,
Name: claims.Name,
Sub: claims.Sub,
})
}
// authGuard creates a route guard that checks authentication
func authGuard() navigation.RouteGuard {
return navigation.AuthGuard(func() bool {
return isAuthenticated.Get()
})
}
// login initiates the OIDC login flow
func login() {
isLoading.Set(true)
authError.Set("")
oidcClient.DiscoverConfigAsync(OIDCIssuer, func(err error) {
if err != nil {
authError.Set("Failed to connect to authentication provider: " + err.Error())
isLoading.Set(false)
return
}
if err := oidcClient.StartAuthFlow(); err != nil {
authError.Set("Failed to start login: " + err.Error())
isLoading.Set(false)
}
// Note: If successful, the browser will redirect to the OIDC provider
})
}
// logout clears authentication state
func logout() {
oidcClient.Logout()
isAuthenticated.Set(false)
currentUser.Set(nil)
navigation.Navigate("/")
}
// View functions
func homeView(params map[string]string) ui.View {
return ui.VerticalGroup(
header(),
ui.VerticalGroup(
ui.TextFromString("Iris Auth Example").
Font(fontTitle).
Margin("20px 0"),
ui.TextFromString("This example demonstrates OIDC authentication with protected routes.").
Color("#666"),
ui.TextFromFunction(func() string {
if authError.Get() != "" {
return "Error: " + authError.Get()
}
return ""
}).Color("#ff4444"),
authSection(),
).Padding("20px").MaxWidth("800px"),
).Gap("0")
}
func header() ui.View {
return ui.HorizontalGroup(
ui.TextFromString("Auth Example").Font(fontHeading),
navigation.Link("/", ui.TextFromString("Home")),
navigation.Link("/profile", ui.TextFromString("Profile")),
navigation.Link("/protected", ui.TextFromString("Protected")),
ui.Spacer(),
authButton(),
).Padding("16px 24px").Background("#f5f5f5").BorderBottom("1px solid #ddd")
}
func authSection() ui.View {
return ui.VerticalGroup(
ui.TextFromFunction(func() string {
if isLoading.Get() {
return "Loading..."
}
if isAuthenticated.Get() {
user := currentUser.Get()
if user != nil {
return "Welcome, " + user.Name + "!"
}
return "You are logged in."
}
return "You are not logged in."
}).Margin("20px 0"),
ui.TextFromFunction(func() string {
if isAuthenticated.Get() {
return "Navigate to Profile or Protected pages to see authenticated content."
}
return "Click Login to authenticate with your OIDC provider."
}).Color("#666"),
).Padding("20px").Background("#fafafa").BorderRadius("8px").Margin("20px 0")
}
func authButton() ui.View {
return ui.Button(func() {
if isAuthenticated.Get() {
logout()
} else {
login()
}
}, ui.TextFromFunction(func() string {
if isLoading.Get() {
return "Loading..."
}
if isAuthenticated.Get() {
return "Logout"
}
return "Login"
})).Padding("8px 16px").Background("#007bff").Foreground("#fff").
Border("none").BorderRadius("4px").Cursor("pointer")
}
func callbackView(params map[string]string) ui.View {
return ui.VerticalGroup(
header(),
ui.VerticalGroup(
ui.TextFromString("Processing login...").Font(fontHeading),
ui.TextFromString("Please wait while we complete authentication.").Color("#666"),
).Padding("40px"),
).Gap("0")
}
func profileView(params map[string]string) ui.View {
return ui.VerticalGroup(
header(),
ui.VerticalGroup(
ui.TextFromString("User Profile").Font(fontTitle).Margin("20px 0"),
userInfoCard(),
tokenInfoCard(),
).Padding("20px").MaxWidth("800px"),
).Gap("0")
}
func userInfoCard() ui.View {
return ui.VerticalGroup(
ui.TextFromString("User Information").Font(fontHeading),
ui.TextFromFunction(func() string {
user := currentUser.Get()
if user == nil {
return "No user information available"
}
return "Name: " + user.Name
}),
ui.TextFromFunction(func() string {
user := currentUser.Get()
if user == nil {
return ""
}
return "Email: " + user.Email
}),
ui.TextFromFunction(func() string {
user := currentUser.Get()
if user == nil {
return ""
}
return "Subject: " + user.Sub
}).Color("#888"),
).Padding("20px").Background("#fafafa").BorderRadius("8px").Margin("10px 0").Gap("8px")
}
func tokenInfoCard() ui.View {
return ui.VerticalGroup(
ui.TextFromString("Token Information").Font(fontHeading),
ui.TextFromFunction(func() string {
tokens := oidcClient.GetStoredTokens()
if tokens == nil {
return "No tokens available"
}
return "Access Token: " + truncateToken(tokens.AccessToken)
}),
ui.TextFromFunction(func() string {
tokens := oidcClient.GetStoredTokens()
if tokens == nil {
return ""
}
return "ID Token: " + truncateToken(tokens.IDToken)
}),
ui.TextFromFunction(func() string {
authHeader := oidcClient.GetAuthHeader()
if authHeader == "" {
return ""
}
return "Auth Header: " + truncateToken(authHeader)
}).Color("#888"),
).Padding("20px").Background("#fafafa").BorderRadius("8px").Margin("10px 0").Gap("8px")
}
func protectedView(params map[string]string) ui.View {
return ui.VerticalGroup(
header(),
ui.VerticalGroup(
ui.TextFromString("Protected Content").Font(fontTitle).Margin("20px 0"),
ui.TextFromString("This page is only visible to authenticated users.").Color("#666"),
ui.VerticalGroup(
ui.TextFromString("Access Granted").Font(fontHeading).Color("#28a745"),
ui.TextFromString("You have successfully accessed a protected route."),
ui.TextFromString("The auth guard verified your authentication status before allowing access.").Color("#888"),
).Padding("20px").Background("#e8f5e9").BorderRadius("8px").Margin("20px 0"),
).Padding("20px").MaxWidth("800px"),
).Gap("0")
}
func notFoundView() ui.View {
return ui.VerticalGroup(
header(),
ui.VerticalGroup(
ui.TextFromString("404 - Page Not Found").Font(fontTitle).Color("#ff4444"),
ui.TextFromString("The requested page could not be found.").Color("#666"),
navigation.Link("/", ui.TextFromString("Go to Home").Color("#007bff")),
).Padding("40px"),
).Gap("0")
}
// Helper functions
func truncateToken(token string) string {
if len(token) <= 20 {
return token
}
return token[:10] + "..." + token[len(token)-10:]
}

36
examples/counter/main.go Normal file
View File

@@ -0,0 +1,36 @@
//go:build js && wasm
package main
import (
"fmt"
"git.flowmade.one/flowmade-one/iris/reactive"
"git.flowmade.one/flowmade-one/iris/ui"
)
func main() {
// Create a signal with initial value 0
count := reactive.NewSignal(0)
view := ui.NewView()
// Reactive text that updates when count changes
view.Child(ui.TextFromFunction(func() string {
return fmt.Sprintf("Count: %d", count.Get())
}))
// Button that increments the count on click
view.Child(ui.Button(func() {
count.Set(count.Get() + 1)
}, ui.TextFromString("Increment")))
// Button that decrements the count on click
view.Child(ui.Button(func() {
count.Set(count.Get() - 1)
}, ui.TextFromString("Decrement")))
ui.NewApp(view)
select {}
}

669
examples/dashboard/main.go Normal file
View File

@@ -0,0 +1,669 @@
//go:build js && wasm
// Dashboard example demonstrating a realistic internal tool admin panel.
// This example showcases:
// - Multiple pages with routing
// - Auth-protected sections
// - Reactive data display
// - Form inputs
// - Component composition
package main
import (
"fmt"
"strconv"
"git.flowmade.one/flowmade-one/iris/navigation"
"git.flowmade.one/flowmade-one/iris/reactive"
"git.flowmade.one/flowmade-one/iris/ui"
)
// Application state - simulated auth and data
var (
isAuthenticated = reactive.NewSignal(false)
currentUser = reactive.NewSignal("")
userRole = reactive.NewSignal("guest")
)
// Simulated dashboard metrics
var (
totalUsers = reactive.NewSignal(1247)
activeOrders = reactive.NewSignal(89)
revenue = reactive.NewSignal(45230.50)
pendingTasks = reactive.NewSignal(12)
)
// Simulated user list
type User struct {
ID int
Name string
Email string
Role string
Active bool
}
var users = reactive.NewSignal([]User{
{1, "Alice Johnson", "alice@example.com", "admin", true},
{2, "Bob Smith", "bob@example.com", "user", true},
{3, "Carol White", "carol@example.com", "user", false},
{4, "Dave Brown", "dave@example.com", "moderator", true},
})
// Settings state
var (
darkMode = reactive.NewSignal(false)
emailNotifications = reactive.NewSignal(true)
apiEndpoint = reactive.NewSignal("https://api.example.com")
refreshInterval = reactive.NewSignal(30)
)
func main() {
// Define routes with guards
routes := []navigation.Route{
{Path: "/", Handler: func(params map[string]string) ui.View { return homeView() }},
{Path: "/login", Handler: func(params map[string]string) ui.View { return loginView() }},
{Path: "/users", Handler: func(params map[string]string) ui.View { return usersView() }, Guards: []navigation.RouteGuard{authGuard}},
{Path: "/users/:id", Handler: userDetailView, Guards: []navigation.RouteGuard{authGuard}},
{Path: "/settings", Handler: func(params map[string]string) ui.View { return settingsView() }, Guards: []navigation.RouteGuard{authGuard}},
{Path: "/admin", Handler: func(params map[string]string) ui.View { return adminView() }, Guards: []navigation.RouteGuard{authGuard, adminGuard}},
}
router := navigation.NewRouter(routes)
router.SetNotFoundHandler(notFoundView)
navigation.SetGlobalRouter(router)
// Create the main app layout
app := dashboardLayout()
ui.NewApp(app)
select {}
}
// Auth guard - checks if user is authenticated
func authGuard(route *navigation.Route, params map[string]string) bool {
if !isAuthenticated.Get() {
navigation.Navigate("/login")
return false
}
return true
}
// Admin guard - checks if user has admin role
func adminGuard(route *navigation.Route, params map[string]string) bool {
return userRole.Get() == "admin"
}
// Main dashboard layout with sidebar and content area
func dashboardLayout() ui.View {
sidebar := createSidebar()
content := createContentArea()
return ui.FlexLayout(
[]string{"240px", "1fr"},
sidebar,
content,
).MinHeight("100vh")
}
// Sidebar with navigation links
func createSidebar() ui.View {
return ui.VerticalGroup(
// Logo/Brand
ui.TextFromString("Iris Dashboard").
Font(ui.NewFont().Size("24px").Weight("bold")).
Padding("20px").
Color("#fff"),
ui.Divider().Background("#444"),
// Navigation links
navLink("/", "Home"),
navLink("/users", "Users"),
navLink("/settings", "Settings"),
navLink("/admin", "Admin"),
ui.Spacer(),
// User info at bottom
ui.VerticalGroup(
ui.Divider().Background("#444"),
ui.TextFromFunction(func() string {
if isAuthenticated.Get() {
return "Logged in as: " + currentUser.Get()
}
return "Not logged in"
}).Color("#aaa").Padding("10px"),
loginLogoutButton(),
),
).Background("#1a1a2e").Width("240px").MinHeight("100vh").Padding("0")
}
func navLink(path, label string) ui.View {
return navigation.Link(path,
ui.TextFromString(label).Color("#ccc"),
).Padding("12px 20px").Cursor("pointer")
}
func loginLogoutButton() ui.View {
return ui.Button(func() {
if isAuthenticated.Get() {
isAuthenticated.Set(false)
currentUser.Set("")
userRole.Set("guest")
navigation.Navigate("/")
} else {
navigation.Navigate("/login")
}
}, ui.TextFromFunction(func() string {
if isAuthenticated.Get() {
return "Logout"
}
return "Login"
}).Color("#fff")).
Background("#e94560").
Padding("10px 20px").
Border("none").
BorderRadius("4px").
Cursor("pointer").
Margin("10px")
}
// Content area that shows the current route view
func createContentArea() ui.View {
view := ui.NewView()
reactive.NewEffect(func() {
router := navigation.GetGlobalRouter()
if router != nil {
currentView := router.GetCurrentView()
view.Element().Set("innerHTML", "")
view.Child(currentView)
}
})
return view.Background("#f0f0f0").Padding("20px").Overflow("auto")
}
// Home view - dashboard overview
func homeView() ui.View {
return ui.VerticalGroup(
ui.TextFromString("Dashboard Overview").
Font(ui.NewFont().Size("28px").Weight("bold")).
Color("#333"),
// Metrics cards
ui.HorizontalGroup(
metricCard("Total Users", func() string { return strconv.Itoa(totalUsers.Get()) }, "#4ecca3"),
metricCard("Active Orders", func() string { return strconv.Itoa(activeOrders.Get()) }, "#e94560"),
metricCard("Revenue", func() string { return fmt.Sprintf("$%.2f", revenue.Get()) }, "#16c79a"),
metricCard("Pending Tasks", func() string { return strconv.Itoa(pendingTasks.Get()) }, "#f39c12"),
).Gap("20px").Margin("20px 0"),
// Quick actions
ui.TextFromString("Quick Actions").
Font(ui.NewFont().Size("20px").Weight("bold")).
Color("#333").
Margin("20px 0 10px 0"),
ui.HorizontalGroup(
actionButton("Add User", func() { navigation.Navigate("/users") }),
actionButton("View Reports", func() { /* simulated action */ }),
actionButton("Export Data", func() { /* simulated action */ }),
).Gap("10px"),
// Recent activity (simulated)
ui.TextFromString("Recent Activity").
Font(ui.NewFont().Size("20px").Weight("bold")).
Color("#333").
Margin("30px 0 10px 0"),
activityItem("User Alice updated profile", "2 minutes ago"),
activityItem("New order #1234 received", "15 minutes ago"),
activityItem("System backup completed", "1 hour ago"),
).AlignLeft().Gap("5px")
}
func metricCard(title string, valueFn func() string, color string) ui.View {
return ui.VerticalGroup(
ui.TextFromString(title).Color("#666").Font(ui.NewFont().Size("14px")),
ui.TextFromFunction(valueFn).
Font(ui.NewFont().Size("32px").Weight("bold")).
Color(color),
).Background("#fff").
Padding("20px").
BorderRadius("8px").
BoxShadow("0 2px 4px rgba(0,0,0,0.1)").
Width("200px").
AlignCenter()
}
func actionButton(label string, action func()) ui.View {
return ui.Button(action,
ui.TextFromString(label).Color("#fff"),
).Background("#0077b6").
Padding("12px 24px").
Border("none").
BorderRadius("4px").
Cursor("pointer")
}
func activityItem(text, time string) ui.View {
return ui.HorizontalGroup(
ui.TextFromString(text).Color("#333"),
ui.Spacer(),
ui.TextFromString(time).Color("#999").Font(ui.NewFont().Size("12px")),
).Background("#fff").
Padding("15px").
BorderRadius("4px").
Margin("5px 0")
}
// Login view
func loginView() ui.View {
username := reactive.NewSignal("")
password := reactive.NewSignal("")
errorMsg := reactive.NewSignal("")
return ui.VerticalGroup(
ui.TextFromString("Login").
Font(ui.NewFont().Size("28px").Weight("bold")).
Color("#333"),
ui.VerticalGroup(
ui.TextFromString("Username").Color("#666").Margin("0 0 5px 0"),
ui.TextInput(&username, "Enter username").
Padding("10px").
Border("1px solid #ddd").
BorderRadius("4px").
Width("300px"),
ui.TextFromString("Password").Color("#666").Margin("15px 0 5px 0"),
ui.TextInput(&password, "Enter password").
Padding("10px").
Border("1px solid #ddd").
BorderRadius("4px").
Width("300px"),
ui.TextFromFunction(func() string {
return errorMsg.Get()
}).Color("#e94560").Margin("10px 0"),
ui.Button(func() {
// Simulated authentication
u := username.Get()
p := password.Get()
if u == "admin" && p == "admin" {
isAuthenticated.Set(true)
currentUser.Set("admin")
userRole.Set("admin")
navigation.Navigate("/")
} else if u == "user" && p == "user" {
isAuthenticated.Set(true)
currentUser.Set("user")
userRole.Set("user")
navigation.Navigate("/")
} else {
errorMsg.Set("Invalid credentials. Try admin/admin or user/user")
}
}, ui.TextFromString("Login").Color("#fff")).
Background("#0077b6").
Padding("12px 40px").
Border("none").
BorderRadius("4px").
Cursor("pointer").
Margin("20px 0"),
).Background("#fff").
Padding("30px").
BorderRadius("8px").
BoxShadow("0 2px 10px rgba(0,0,0,0.1)").
Gap("5px"),
).AlignCenter().Padding("50px")
}
// Users view - list and manage users
func usersView() ui.View {
searchTerm := reactive.NewSignal("")
return ui.VerticalGroup(
ui.TextFromString("User Management").
Font(ui.NewFont().Size("28px").Weight("bold")).
Color("#333"),
// Search bar
ui.HorizontalGroup(
ui.TextInput(&searchTerm, "Search users...").
Padding("10px").
Border("1px solid #ddd").
BorderRadius("4px").
Width("300px"),
ui.Button(func() {
// Add new user simulation
currentUsers := users.Get()
newID := len(currentUsers) + 1
currentUsers = append(currentUsers, User{
ID: newID,
Name: fmt.Sprintf("New User %d", newID),
Email: fmt.Sprintf("user%d@example.com", newID),
Role: "user",
Active: true,
})
users.Set(currentUsers)
totalUsers.Set(totalUsers.Get() + 1)
}, ui.TextFromString("Add User").Color("#fff")).
Background("#4ecca3").
Padding("10px 20px").
Border("none").
BorderRadius("4px").
Cursor("pointer"),
).Gap("10px").Margin("20px 0"),
// User list
ui.VerticalGroup(
userListHeader(),
userList(&searchTerm),
).Background("#fff").
BorderRadius("8px").
BoxShadow("0 2px 4px rgba(0,0,0,0.1)"),
).AlignLeft().Gap("10px")
}
func userListHeader() ui.View {
return ui.FlexLayout(
[]string{"60px", "1fr", "1fr", "100px", "100px"},
ui.TextFromString("ID").Font(ui.NewFont().Weight("bold")).Color("#666"),
ui.TextFromString("Name").Font(ui.NewFont().Weight("bold")).Color("#666"),
ui.TextFromString("Email").Font(ui.NewFont().Weight("bold")).Color("#666"),
ui.TextFromString("Role").Font(ui.NewFont().Weight("bold")).Color("#666"),
ui.TextFromString("Status").Font(ui.NewFont().Weight("bold")).Color("#666"),
).Padding("15px").BorderBottom("2px solid #eee")
}
func userList(searchTerm *reactive.Signal[string]) ui.View {
view := ui.NewView()
reactive.NewEffect(func() {
view.Element().Set("innerHTML", "")
search := searchTerm.Get()
for _, user := range users.Get() {
// Simple search filter
if search != "" && !containsIgnoreCase(user.Name, search) && !containsIgnoreCase(user.Email, search) {
continue
}
view.Child(userRow(user))
}
})
return view
}
func userRow(user User) ui.View {
statusColor := "#4ecca3"
statusText := "Active"
if !user.Active {
statusColor = "#e94560"
statusText = "Inactive"
}
return ui.FlexLayout(
[]string{"60px", "1fr", "1fr", "100px", "100px"},
ui.TextFromString(strconv.Itoa(user.ID)).Color("#333"),
navigation.Link(
fmt.Sprintf("/users/%d", user.ID),
ui.TextFromString(user.Name).Color("#0077b6"),
),
ui.TextFromString(user.Email).Color("#666"),
ui.TextFromString(user.Role).Color("#333"),
ui.TextFromString(statusText).Color(statusColor),
).Padding("15px").BorderBottom("1px solid #eee")
}
// User detail view
func userDetailView(params map[string]string) ui.View {
userID := params["id"]
id, _ := strconv.Atoi(userID)
var user *User
for _, u := range users.Get() {
if u.ID == id {
userCopy := u
user = &userCopy
break
}
}
if user == nil {
return ui.TextFromString("User not found").Color("#e94560")
}
return ui.VerticalGroup(
ui.Button(func() {
navigation.Navigate("/users")
}, ui.TextFromString("Back to Users").Color("#0077b6")).
Background("transparent").
Border("none").
Cursor("pointer").
Padding("0").
Margin("0 0 20px 0"),
ui.TextFromString(user.Name).
Font(ui.NewFont().Size("28px").Weight("bold")).
Color("#333"),
ui.VerticalGroup(
detailRow("ID", strconv.Itoa(user.ID)),
detailRow("Email", user.Email),
detailRow("Role", user.Role),
detailRow("Status", map[bool]string{true: "Active", false: "Inactive"}[user.Active]),
).Background("#fff").
Padding("20px").
BorderRadius("8px").
BoxShadow("0 2px 4px rgba(0,0,0,0.1)").
Gap("10px").
Margin("20px 0"),
).AlignLeft()
}
func detailRow(label, value string) ui.View {
return ui.HorizontalGroup(
ui.TextFromString(label+":").Font(ui.NewFont().Weight("bold")).Color("#666").Width("100px"),
ui.TextFromString(value).Color("#333"),
).Gap("10px")
}
// Settings view
func settingsView() ui.View {
return ui.VerticalGroup(
ui.TextFromString("Settings").
Font(ui.NewFont().Size("28px").Weight("bold")).
Color("#333"),
// Appearance section
settingsSection("Appearance",
ui.Checkbox(&darkMode, "Enable Dark Mode"),
),
// Notifications section
settingsSection("Notifications",
ui.Checkbox(&emailNotifications, "Email Notifications"),
),
// API Settings section
settingsSection("API Configuration",
ui.VerticalGroup(
ui.TextFromString("API Endpoint").Color("#666").Margin("0 0 5px 0"),
ui.TextInput(&apiEndpoint, "API URL").
Padding("10px").
Border("1px solid #ddd").
BorderRadius("4px").
Width("400px"),
ui.TextFromString("Refresh Interval (seconds)").Color("#666").Margin("15px 0 5px 0"),
ui.HorizontalGroup(
ui.Slider(&refreshInterval, 5, 120),
ui.TextFromFunction(func() string {
return fmt.Sprintf("%ds", refreshInterval.Get())
}).Color("#333").Width("50px"),
).Gap("10px").AlignCenter(),
).Gap("5px"),
),
// Current settings display
ui.VerticalGroup(
ui.TextFromString("Current Configuration").
Font(ui.NewFont().Size("18px").Weight("bold")).
Color("#333"),
ui.TextFromFunction(func() string {
return fmt.Sprintf("Dark Mode: %v | Notifications: %v | Refresh: %ds",
darkMode.Get(), emailNotifications.Get(), refreshInterval.Get())
}).Color("#666").Font(ui.NewFont().Size("14px")),
).Background("#f8f8f8").
Padding("15px").
BorderRadius("4px").
Margin("20px 0"),
// Save button
ui.Button(func() {
// Simulated save action
fmt.Println("Settings saved!")
}, ui.TextFromString("Save Settings").Color("#fff")).
Background("#0077b6").
Padding("12px 30px").
Border("none").
BorderRadius("4px").
Cursor("pointer"),
).AlignLeft().Gap("10px").Padding("0 0 20px 0")
}
func settingsSection(title string, content ui.View) ui.View {
return ui.VerticalGroup(
ui.TextFromString(title).
Font(ui.NewFont().Size("18px").Weight("bold")).
Color("#333"),
content,
).Background("#fff").
Padding("20px").
BorderRadius("8px").
BoxShadow("0 2px 4px rgba(0,0,0,0.1)").
Gap("15px").
Margin("20px 0")
}
// Admin view - protected section
func adminView() ui.View {
return ui.VerticalGroup(
ui.TextFromString("Admin Panel").
Font(ui.NewFont().Size("28px").Weight("bold")).
Color("#333"),
ui.TextFromString("This section is only accessible to administrators.").
Color("#666").
Margin("10px 0"),
// Admin actions
ui.VerticalGroup(
ui.TextFromString("System Actions").
Font(ui.NewFont().Size("18px").Weight("bold")).
Color("#333"),
ui.HorizontalGroup(
adminActionButton("Clear Cache", func() {
fmt.Println("Cache cleared!")
}),
adminActionButton("Restart Services", func() {
fmt.Println("Services restarted!")
}),
adminActionButton("Run Backup", func() {
fmt.Println("Backup started!")
}),
).Gap("10px"),
).Background("#fff").
Padding("20px").
BorderRadius("8px").
BoxShadow("0 2px 4px rgba(0,0,0,0.1)").
Gap("15px").
Margin("20px 0"),
// Danger zone
ui.VerticalGroup(
ui.TextFromString("Danger Zone").
Font(ui.NewFont().Size("18px").Weight("bold")).
Color("#e94560"),
ui.TextFromString("These actions are irreversible. Use with caution.").
Color("#999").
Font(ui.NewFont().Size("14px")),
ui.Button(func() {
fmt.Println("Reset initiated!")
}, ui.TextFromString("Reset All Data").Color("#fff")).
Background("#e94560").
Padding("10px 20px").
Border("none").
BorderRadius("4px").
Cursor("pointer"),
).Background("#fff").
Padding("20px").
BorderRadius("8px").
Border("2px solid #e94560").
Gap("10px").
Margin("20px 0"),
).AlignLeft().Gap("10px")
}
func adminActionButton(label string, action func()) ui.View {
return ui.Button(action,
ui.TextFromString(label).Color("#fff"),
).Background("#6c757d").
Padding("10px 20px").
Border("none").
BorderRadius("4px").
Cursor("pointer")
}
// 404 Not Found view
func notFoundView() ui.View {
return ui.VerticalGroup(
ui.TextFromString("404").
Font(ui.NewFont().Size("72px").Weight("bold")).
Color("#e94560"),
ui.TextFromString("Page Not Found").
Font(ui.NewFont().Size("24px")).
Color("#666"),
ui.Button(func() {
navigation.Navigate("/")
}, ui.TextFromString("Go Home").Color("#fff")).
Background("#0077b6").
Padding("12px 30px").
Border("none").
BorderRadius("4px").
Cursor("pointer").
Margin("20px 0"),
).AlignCenter().Padding("50px")
}
// Helper function for case-insensitive search
func containsIgnoreCase(str, substr string) bool {
return len(str) >= len(substr) && contains(toLower(str), toLower(substr))
}
func toLower(s string) string {
result := make([]byte, len(s))
for i := 0; i < len(s); i++ {
c := s[i]
if c >= 'A' && c <= 'Z' {
result[i] = c + 32
} else {
result[i] = c
}
}
return string(result)
}
func contains(s, substr string) bool {
for i := 0; i <= len(s)-len(substr); i++ {
if s[i:i+len(substr)] == substr {
return true
}
}
return false
}

265
examples/multipage/main.go Normal file
View File

@@ -0,0 +1,265 @@
//go:build js && wasm
// Package main demonstrates Iris client-side routing capabilities.
//
// This example shows:
// - Router setup with multiple routes
// - Route parameters (/users/:id)
// - Navigation between pages using Link and Navigate
// - Route guards for protected routes
// - History management (back/forward)
package main
import (
"fmt"
"git.flowmade.one/flowmade-one/iris/navigation"
"git.flowmade.one/flowmade-one/iris/reactive"
"git.flowmade.one/flowmade-one/iris/ui"
)
// Global auth state to demonstrate route guards
var isAuthenticated = reactive.NewSignal(false)
func main() {
// Define routes with their handlers and guards
routes := []navigation.Route{
{Path: "/", Handler: homePage},
{Path: "/about", Handler: aboutPage},
{Path: "/users", Handler: usersPage},
{Path: "/users/:id", Handler: userDetailPage, Guards: []navigation.RouteGuard{
navigation.NumericIdGuard(),
}},
{Path: "/admin", Handler: adminPage, Guards: []navigation.RouteGuard{
navigation.AuthGuard(func() bool { return isAuthenticated.Get() }),
}},
}
// Create router and set up navigation
router := navigation.NewRouter(routes)
router.SetNotFoundHandler(notFoundPage)
navigation.SetGlobalRouter(router)
// Mount the app with router support
ui.NewAppWithRouter(router)
// Keep the application running
select {}
}
// homePage renders the landing page with navigation links
func homePage(params map[string]string) ui.View {
return pageLayout("Home",
ui.VerticalGroup(
ui.TextFromString("Welcome to the Iris Multi-Page Demo").
Color("#333").
Padding("16px"),
ui.TextFromString("This example demonstrates client-side routing with:").
Color("#666").
Padding("8px"),
ui.VerticalGroup(
ui.TextFromString("- Multiple routes and page navigation").Color("#888"),
ui.TextFromString("- Route parameters (see /users/:id)").Color("#888"),
ui.TextFromString("- Route guards for protected pages").Color("#888"),
ui.TextFromString("- Browser history integration").Color("#888"),
).Padding("8px 24px"),
ui.TextFromString("Use the navigation bar above to explore.").
Color("#666").
Padding("16px"),
),
)
}
// aboutPage renders information about the demo
func aboutPage(params map[string]string) ui.View {
return pageLayout("About",
ui.VerticalGroup(
ui.TextFromString("About Iris Navigation").
Color("#333").
Padding("16px"),
ui.TextFromString("The navigation package provides:").
Color("#666").
Padding("8px"),
ui.VerticalGroup(
ui.TextFromString("Router - Define routes with path patterns and handlers").Color("#888"),
ui.TextFromString("RouteGuard - Protect routes with custom logic").Color("#888"),
ui.TextFromString("HistoryManager - Integrate with browser history").Color("#888"),
ui.TextFromString("Link - Create navigational elements").Color("#888"),
ui.TextFromString("Navigate/Back/Forward - Programmatic navigation").Color("#888"),
).Padding("8px 24px"),
),
)
}
// usersPage renders a list of users with links to their detail pages
func usersPage(params map[string]string) ui.View {
users := []struct {
ID string
Name string
}{
{"1", "Alice"},
{"2", "Bob"},
{"3", "Charlie"},
{"4", "Diana"},
}
var userLinks []ui.View
for _, user := range users {
// Capture user in closure
u := user
userLinks = append(userLinks,
navigation.Link(fmt.Sprintf("/users/%s", u.ID),
ui.TextFromString(fmt.Sprintf("View %s (ID: %s)", u.Name, u.ID)).
Color("#0066cc"),
).Padding("8px").Cursor("pointer"),
)
}
return pageLayout("Users",
ui.VerticalGroup(
ui.TextFromString("User Directory").
Color("#333").
Padding("16px"),
ui.TextFromString("Click a user to see their details:").
Color("#666").
Padding("8px"),
ui.VerticalGroup(userLinks...).Padding("8px"),
),
)
}
// userDetailPage shows details for a specific user using the :id parameter
func userDetailPage(params map[string]string) ui.View {
userID := params["id"]
// Simulated user data
userData := map[string]struct {
Name string
Email string
Role string
}{
"1": {"Alice", "alice@example.com", "Admin"},
"2": {"Bob", "bob@example.com", "User"},
"3": {"Charlie", "charlie@example.com", "User"},
"4": {"Diana", "diana@example.com", "Moderator"},
}
user, exists := userData[userID]
if !exists {
return pageLayout("User Not Found",
ui.VerticalGroup(
ui.TextFromString(fmt.Sprintf("User with ID %s not found", userID)).
Color("#ff4444").
Padding("16px"),
ui.Button(func() {
navigation.Navigate("/users")
}, ui.TextFromString("Back to Users")).
Padding("8px"),
),
)
}
return pageLayout(fmt.Sprintf("User: %s", user.Name),
ui.VerticalGroup(
ui.TextFromString(fmt.Sprintf("User Details (ID: %s)", userID)).
Color("#333").
Padding("16px"),
ui.VerticalGroup(
ui.TextFromString(fmt.Sprintf("Name: %s", user.Name)).Color("#666"),
ui.TextFromString(fmt.Sprintf("Email: %s", user.Email)).Color("#666"),
ui.TextFromString(fmt.Sprintf("Role: %s", user.Role)).Color("#666"),
).Padding("8px 24px"),
ui.HorizontalGroup(
ui.Button(func() {
navigation.Back()
}, ui.TextFromString("Go Back")).Padding("8px"),
ui.Button(func() {
navigation.Navigate("/users")
}, ui.TextFromString("All Users")).Padding("8px"),
).Padding("16px"),
),
)
}
// adminPage is a protected route that requires authentication
func adminPage(params map[string]string) ui.View {
return pageLayout("Admin",
ui.VerticalGroup(
ui.TextFromString("Admin Dashboard").
Color("#333").
Padding("16px"),
ui.TextFromString("Welcome to the protected admin area!").
Color("#28a745").
Padding("8px"),
ui.TextFromString("This page is protected by an AuthGuard.").
Color("#666").
Padding("8px"),
ui.Button(func() {
isAuthenticated.Set(false)
navigation.Navigate("/")
}, ui.TextFromString("Logout")).
Padding("8px").
Background("#dc3545").
Foreground("#fff"),
),
)
}
// notFoundPage renders when no route matches
func notFoundPage() ui.View {
return pageLayout("404",
ui.VerticalGroup(
ui.TextFromString("404 - Page Not Found").
Color("#ff4444").
Padding("16px"),
ui.TextFromString("The page you are looking for does not exist.").
Color("#666").
Padding("8px"),
ui.Button(func() {
navigation.Navigate("/")
}, ui.TextFromString("Go Home")).Padding("8px"),
),
)
}
// pageLayout provides consistent page structure with navigation
func pageLayout(title string, content ui.View) ui.View {
return ui.VerticalGroup(
navBar(),
ui.VerticalGroup(
ui.TextFromString(title).
Color("#333").
Padding("8px").
Background("#f0f0f0").
Width("100%"),
content,
).Padding("16px"),
).MinHeight("100vh")
}
// navBar creates the navigation header with links
func navBar() ui.View {
return ui.HorizontalGroup(
navigation.Link("/", ui.TextFromString("Home").Color("#fff")),
navigation.Link("/about", ui.TextFromString("About").Color("#fff")),
navigation.Link("/users", ui.TextFromString("Users").Color("#fff")),
authButton(),
).Background("#333").Padding("8px 16px").AlignItems("center")
}
// authButton shows login/admin based on auth state
func authButton() ui.View {
return ui.Button(func() {
if isAuthenticated.Get() {
navigation.Navigate("/admin")
} else {
isAuthenticated.Set(true)
navigation.Navigate("/admin")
}
}, ui.TextFromFunction(func() string {
if isAuthenticated.Get() {
return "Admin"
}
return "Login"
}).Color("#fff")).Background("transparent").Border("1px solid #fff").Padding("4px 12px").Cursor("pointer")
}

195
examples/todo/main.go Normal file
View File

@@ -0,0 +1,195 @@
//go:build js && wasm
package main
import (
"fmt"
"syscall/js"
"git.flowmade.one/flowmade-one/iris/reactive"
"git.flowmade.one/flowmade-one/iris/ui"
)
// Todo represents a single todo item
type Todo struct {
ID int
Text string
Completed bool
}
func main() {
// Signal holding the list of todos
todos := reactive.NewSignal([]Todo{})
// Signal for the input field
inputText := reactive.NewSignal("")
// Counter for generating unique IDs
nextID := reactive.NewSignal(1)
// Create the main app view
view := ui.VerticalGroup(
// Title
ui.TextFromString("Todo List").Padding("16px 0"),
// Input row: text input + add button
inputRow(&inputText, func() {
text := inputText.Get()
if text == "" {
return
}
// Add new todo
id := nextID.Get()
nextID.Set(id + 1)
currentTodos := todos.Get()
newTodos := append(currentTodos, Todo{
ID: id,
Text: text,
Completed: false,
})
todos.Set(newTodos)
// Clear input
inputText.Set("")
}),
// Todo list
todoList(&todos),
// Summary text showing completed count
ui.TextFromFunction(func() string {
allTodos := todos.Get()
if len(allTodos) == 0 {
return "No todos yet"
}
completed := 0
for _, t := range allTodos {
if t.Completed {
completed++
}
}
return fmt.Sprintf("%d of %d completed", completed, len(allTodos))
}).Padding("16px 0"),
).MaxWidth("400px").Padding("24px")
ui.NewApp(view)
select {}
}
// inputRow creates the input field and add button
func inputRow(inputText *reactive.Signal[string], onAdd func()) ui.View {
row := ui.NewView()
row.Display("flex").Gap("8px").Width("100%")
// Text input
input := ui.TextInput(inputText, "What needs to be done?")
input.Width("100%")
// Handle Enter key to add todo
input.Element().OnWithEvent("keypress", func(event js.Value) {
if event.Get("key").String() == "Enter" {
onAdd()
}
})
// Add button
addBtn := ui.Button(onAdd, ui.TextFromString("Add"))
addBtn.Padding("8px 16px")
row.Child(input)
row.Child(addBtn)
return row
}
// todoList renders the list of todos reactively
func todoList(todos *reactive.Signal[[]Todo]) ui.View {
container := ui.NewView()
container.Width("100%")
// Effect that re-renders the list when todos change
reactive.NewEffect(func() {
allTodos := todos.Get()
// Clear existing children
container.Element().ClearChildren()
// Render each todo item
for _, todo := range allTodos {
item := todoItem(todo, todos)
container.Child(item)
}
// Show empty state if no todos
if len(allTodos) == 0 {
emptyText := ui.TextFromString("Add your first todo above")
emptyText.Color("#666").Padding("16px 0").TextAlign("center")
container.Child(emptyText)
}
})
return container
}
// todoItem renders a single todo item with toggle and delete
func todoItem(todo Todo, todos *reactive.Signal[[]Todo]) ui.View {
row := ui.NewView()
row.Display("flex").Gap("12px").Padding("8px 0").Width("100%").AlignItems("center")
row.BorderBottom("1px solid #eee")
// Completed checkbox using public ui.RawCheckbox
checkbox := ui.RawCheckbox(todo.Completed, func(isChecked bool) {
toggleTodo(todos, todo.ID, isChecked)
})
// Todo text with strikethrough if completed
textView := ui.NewView()
textView.Display("flex").Width("100%")
text := ui.Span(todo.Text)
if todo.Completed {
text.TextDecoration("line-through").Color("#999")
}
textView.Child(text)
// Delete button
deleteBtn := ui.Button(func() {
deleteTodo(todos, todo.ID)
}, ui.TextFromString("X"))
deleteBtn.Padding("4px 8px")
row.Child(checkbox)
row.Child(textView)
row.Child(deleteBtn)
return row
}
// toggleTodo updates the completed status of a todo
func toggleTodo(todos *reactive.Signal[[]Todo], id int, completed bool) {
currentTodos := todos.Get()
newTodos := make([]Todo, len(currentTodos))
for i, t := range currentTodos {
if t.ID == id {
newTodos[i] = Todo{ID: t.ID, Text: t.Text, Completed: completed}
} else {
newTodos[i] = t
}
}
todos.Set(newTodos)
}
// deleteTodo removes a todo from the list
func deleteTodo(todos *reactive.Signal[[]Todo], id int) {
currentTodos := todos.Get()
newTodos := make([]Todo, 0, len(currentTodos))
for _, t := range currentTodos {
if t.ID != id {
newTodos = append(newTodos, t)
}
}
todos.Set(newTodos)
}

View File

@@ -205,4 +205,23 @@ func NumberInput(value *reactive.Signal[float64], placeholder string) View {
})
return View{input}
}
}
// RawCheckbox creates a plain checkbox input without a label wrapper.
// The onChange callback is called with the new checked state when the user clicks.
func RawCheckbox(checked bool, onChange func(bool)) View {
checkbox := element.NewElement("input")
checkbox.Attr("type", "checkbox")
// Set initial state
if checked {
checkbox.Set("checked", true)
}
// Call onChange when user clicks
checkbox.On("change", func() {
newValue := checkbox.Get("checked").Bool()
onChange(newValue)
})
return View{checkbox}
}

View File

@@ -170,3 +170,8 @@ func (v View) PointerEvents(value string) View {
v.e.PointerEvents(value)
return v
}
func (v View) TextDecoration(value string) View {
v.e.Get("style").Call("setProperty", "text-decoration", value)
return v
}

View File

@@ -21,3 +21,10 @@ func TextFromFunction(fn func() string) View {
return View{textNode}
}
// Span creates a span element with the given text content.
func Span(text string) View {
v := View{element.NewElement("span")}
v.e.Set("textContent", text)
return v
}