feat(leptos): layout components -- Header, Sidebar, TabStrip, MobileTabBar

services/frontend-leptos/frontend/src/app.rs

@@ -1,5 +1,11 @@
 use leptos::prelude::*;
 
+// Temporary stub until Task 4 creates the real UiContext
+#[derive(Clone)]
+pub struct UiContext {
+    pub active_tab: RwSignal<shared_types::ui_state::Tab>,
+}
+
 #[component]
 pub fn App() -> impl IntoView {
     view! {

services/frontend-leptos/frontend/src/layout/dashboard_layout.rs

@@ -0,0 +1,28 @@
+// services/frontend-leptos/frontend/src/layout/dashboard_layout.rs
+use leptos::children::Children;
+use leptos::prelude::*;
+use super::header::Header;
+use super::mobile_tab_bar::MobileTabBar;
+use super::sidebar::Sidebar;
+use super::tab_strip::TabStrip;
+
+#[component]
+pub fn DashboardLayout(
+    children: Children,
+) -> impl IntoView {
+    view! {
+        <div style="display: flex; flex-direction: column; height: 100vh;">
+            <Header />
+            <div style="flex: 1; display: flex; overflow: hidden;">
+                <Sidebar />
+                <main style="flex: 1; overflow: auto;">
+                    <TabStrip />
+                    <div style="padding: 1.5rem; max-width: 1280px;">
+                        {children()}
+                    </div>
+                </main>
+            </div>
+            <MobileTabBar />
+        </div>
+    }
+}

services/frontend-leptos/frontend/src/layout/header.rs

@@ -0,0 +1,56 @@
+// services/frontend-leptos/frontend/src/layout/header.rs
+use leptos::prelude::*;
+use crate::ws::context::WsContext;
+use crate::ws::socket::WsStatus;
+
+#[component]
+pub fn Header() -> impl IntoView {
+    let ws = use_context::<WsContext>().expect("WsContext not provided");
+    let ws_status = ws.status;
+
+    let indicator_text_memo = create_memo(move |_| match ws_status.get() {
+        WsStatus::Connected => "Online",
+        WsStatus::Connecting => "Menghubungkan...",
+        WsStatus::Disconnected => "Offline",
+        WsStatus::Error(_) => "Error",
+    });
+    let indicator_color_memo = create_memo(move |_| match ws_status.get() {
+        WsStatus::Connected => "var(--color-success)",
+        WsStatus::Connecting => "var(--color-warning)",
+        WsStatus::Disconnected => "var(--text-tertiary)",
+        WsStatus::Error(_) => "var(--color-error)",
+    });
+
+    view! {
+        <header style="
+            height: var(--header-height);
+            border-bottom: 1px solid var(--surface-border);
+            display: flex;
+            align-items: center;
+            padding: 0 1.5rem;
+            background: var(--surface-base);
+            position: sticky;
+            top: 0;
+            z-index: var(--z-header);
+        ">
+            <div class="flex items-center gap-2">
+                <span style="font-weight: 700; font-size: 1.125rem; color: var(--color-primary);">
+                    "IMPHNEN"
+                </span>
+                <span style="color: var(--text-secondary); font-size: 0.75rem; padding: 0.125rem 0.375rem; background: var(--surface-overlay); border-radius: var(--radius-sm);">
+                    "Guild Watcher"
+                </span>
+            </div>
+
+            <div class="flex items-center gap-4 ml-auto">
+                <div class="flex items-center gap-1" style="font-size: 0.75rem; color: var(--text-secondary);">
+                    <span
+                        style="width: 8px; height: 8px; border-radius: 50%;"
+                        style:background={move || indicator_color_memo.get()}
+                    ></span>
+                    <span>{move || indicator_text_memo.get()}</span>
+                </div>
+            </div>
+        </header>
+    }
+}

services/frontend-leptos/frontend/src/layout/mobile_tab_bar.rs

@@ -0,0 +1,63 @@
+// services/frontend-leptos/frontend/src/layout/mobile_tab_bar.rs
+use leptos::prelude::*;
+use shared_types::ui_state::Tab;
+use crate::app::UiContext;
+
+#[component]
+pub fn MobileTabBar() -> impl IntoView {
+    let ui = use_context::<UiContext>().expect("UiContext not provided");
+
+    view! {
+        <div class="hide-desktop" style="
+            position: fixed;
+            bottom: 0;
+            left: 0;
+            right: 0;
+            display: flex;
+            background: var(--surface-base);
+            border-top: 1px solid var(--surface-border);
+            z-index: var(--z-overlay);
+        ">
+            <MobileTabItem icon="message-square" label="Pesan" tab=Tab::Messages ui=ui.clone() />
+            <MobileTabItem icon="radio" label="Voice" tab=Tab::Live ui=ui.clone() />
+            <MobileTabItem icon="shield" label="Dashboard" tab=Tab::Dashboard ui=ui.clone() />
+        </div>
+    }
+}
+
+#[component]
+fn MobileTabItem(
+    icon: &'static str,
+    label: &'static str,
+    tab: Tab,
+    ui: UiContext,
+) -> impl IntoView {
+    let tab_active = tab.clone();
+    let tab_click = tab;
+    view! {
+        <button
+            on:click=move |_| ui.active_tab.set(tab_click.clone())
+            style="
+                flex: 1;
+                display: flex;
+                flex-direction: column;
+                align-items: center;
+                gap: 0.25rem;
+                padding: 0.5rem;
+                background: none;
+                border: none;
+                font-family: inherit;
+                font-size: 0.625rem;
+                cursor: pointer;
+                transition: color var(--transition-fast);
+            "
+            style:color=move || if ui.active_tab.get() == tab_active { "var(--color-primary)" } else { "var(--text-tertiary)" }
+        >
+            <span style="font-size: 1.25rem;">
+                // In Phase 2, replace text with lucide-leptos icons
+                {icon}
+            </span>
+            <span>{label}</span>
+        </button>
+    }
+}

services/frontend-leptos/frontend/src/layout/mod.rs

@@ -0,0 +1,6 @@
+// services/frontend-leptos/frontend/src/layout/mod.rs
+pub mod dashboard_layout;
+pub mod header;
+pub mod mobile_tab_bar;
+pub mod sidebar;
+pub mod tab_strip;

services/frontend-leptos/frontend/src/layout/sidebar.rs

@@ -0,0 +1,71 @@
+// services/frontend-leptos/frontend/src/layout/sidebar.rs
+use leptos::prelude::*;
+use shared_types::ui_state::Tab;
+use crate::app::UiContext;
+
+#[component]
+pub fn Sidebar() -> impl IntoView {
+    let ui = use_context::<UiContext>().expect("UiContext not provided");
+    let (collapsed, _set_collapsed) = create_signal(false);
+
+    view! {
+        <nav style:width=move || if collapsed.get() { "var(--sidebar-collapsed-width)" } else { "var(--sidebar-width)" }
+            style="
+                border-right: 1px solid var(--surface-border);
+                display: flex;
+                flex-direction: column;
+                padding: 1rem 0.5rem;
+                transition: width var(--transition-normal);
+                overflow: hidden;
+                flex-shrink: 0;
+            "
+        >
+            <NavItem
+                icon="message-square"
+                label="Pesan & Moderasi"
+                tab=Tab::Messages
+                ui=ui.clone()
+            />
+            <NavItem
+                icon="radio"
+                label="Voice & Media"
+                tab=Tab::Live
+                ui=ui.clone()
+            />
+            <NavItem
+                icon="shield"
+                label="Dashboard Guild"
+                tab=Tab::Dashboard
+                ui=ui.clone()
+            />
+        </nav>
+    }
+}
+
+#[component]
+fn NavItem(
+    icon: &'static str,
+    label: &'static str,
+    tab: Tab,
+    ui: UiContext,
+) -> impl IntoView {
+    let tab_bg = tab.clone();
+    let tab_clr = tab.clone();
+    let tab_click = tab;
+    let handle_click = move |_| ui.active_tab.set(tab_click.clone());
+
+    view! {
+        <button
+            class="btn btn-ghost"
+            style="
+                justify-content: flex-start; width: 100%;
+                margin-bottom: 0.25rem;
+            "
+            style:background=move || if ui.active_tab.get() == tab_bg { "var(--surface-overlay)" } else { "" }
+            style:color=move || if ui.active_tab.get() == tab_clr { "var(--color-primary)" } else { "" }
+            on:click=handle_click
+        >
+            {label}
+        </button>
+    }
+}

services/frontend-leptos/frontend/src/layout/tab_strip.rs

@@ -0,0 +1,54 @@
+// services/frontend-leptos/frontend/src/layout/tab_strip.rs
+use leptos::prelude::*;
+use shared_types::ui_state::Tab;
+use crate::app::UiContext;
+
+#[component]
+pub fn TabStrip() -> impl IntoView {
+    let ui = use_context::<UiContext>().expect("UiContext not provided");
+
+    view! {
+        <div style="
+            display: flex;
+            border-bottom: 1px solid var(--surface-border);
+            padding: 0 1rem;
+            background: var(--surface-base);
+        ">
+            <TabItem label="Pesan & Moderasi" tab=Tab::Messages ui=ui.clone() />
+            <TabItem label="Voice & Media" tab=Tab::Live ui=ui.clone() />
+            <TabItem label="Dashboard Guild" tab=Tab::Dashboard ui=ui.clone() />
+        </div>
+    }
+}
+
+#[component]
+fn TabItem(
+    label: &'static str,
+    tab: Tab,
+    ui: UiContext,
+) -> impl IntoView {
+    let tab_color = tab.clone();
+    let tab_border = tab.clone();
+    let tab_click = tab;
+    view! {
+        <button
+            on:click=move |_| ui.active_tab.set(tab_click.clone())
+            style="
+                padding: 0.75rem 1rem;
+                background: none;
+                border: none;
+                border-bottom: 2px solid transparent;
+                font-family: inherit;
+                font-size: 0.875rem;
+                font-weight: 500;
+                cursor: pointer;
+                color: var(--text-secondary);
+                transition: all var(--transition-fast);
+            "
+            style:color=move || if ui.active_tab.get() == tab_color { "var(--color-primary)" } else { "" }
+            style:border-bottom-color=move || if ui.active_tab.get() == tab_border { "var(--color-primary)" } else { "transparent" }
+        >
+            {label}
+        </button>
+    }
+}

services/frontend-leptos/frontend/src/lib.rs

@@ -1,5 +1,6 @@
 pub mod api;
 pub mod app;
+pub mod layout;
 pub mod ui;
 pub mod ws;