# Chapters 1–10

## T01 Primitives — `src/primitives`

- [x] Box / View — native `div()`
- [x] Text — native: strings and `StyledText` are elements
- [x] Icon (T00)
- [x] IconSet / IconRegistry (T00)
- [x] Svg — native `svg()`
- [x] Image — loading, failed, placeholder over `img()`
- [x] Canvas — native `canvas()`
- [x] Divider / Separator
- [x] Spacer — native `div().flex_1()`
- [x] Portal — native `deferred(anchored())`
- [x] Overlay / Backdrop
- [x] Slot — native `impl IntoElement` params and `ParentElement`
- [x] Show / When — native `.when()` / `.when_some()`
- [x] For / Each — native `.children(iter)`
- [x] Fragment — native: children take iterators
- [x] VisuallyHidden — blocked: gpui 0.2.2 has no accessibility tree
- [x] FocusRing
- [x] FocusScope / FocusTrap
- [x] ClickOutside — native `on_mouse_down_out`
- [x] HoverArea — native `on_hover` / `.hover()`
- [x] Pressable — press state, long press
- [x] KeyboardHandler — native `on_key_down` / `on_action`
- [x] Measure
- [x] ResizeObserver → `primitives::Measure`
- [x] IntersectionObserver
- [x] Clipboard — native `write_to_clipboard` / `read_from_clipboard`
- [x] Tooltip Trigger — owns `Tooltip`: delay, follow mouse, rich content

## T02 Typography — `src/typography`

- [x] Heading (H1–H6)
- [x] Title / Subtitle
- [x] Paragraph
- [x] Label
- [x] Caption
- [x] Overline
- [x] Code
- [x] Kbd — ⌘ / Ctrl by platform
- [x] KbdCombo
- [x] Blockquote
- [x] Highlight / Mark
- [x] Truncate → `typography::Ellipsis`; gpui's `.truncate()` holds only in a block of fixed width
- [x] LineClamp — native `.line_clamp(n)`
- [x] MiddleEllipsis
- [x] EllipsisTooltip
- [x] Link
- [x] ExternalLink
- [x] RelativeTime
- [x] DateTimeText
- [x] NumberText
- [x] CurrencyText
- [x] PercentText
- [x] FileSizeText
- [x] DurationText
- [x] PluralText
- [x] CopyableText
- [x] SelectableText — prove: selection over `StyledText` layout
- [x] Emoji — shortcodes
- [x] Latex / MathInline — prove: TeX subset
- [x] AnimatedNumber
- [x] Typewriter
- [x] GradientText — per-glyph tonal ramp
- [x] ShimmerText

## T03 Layout — `src/layout`

- [x] Stack / HStack / VStack
- [x] Flex — native `.flex()`
- [x] Grid / GridItem — native `.grid()`, `.col_span()`
- [x] SimpleGrid
- [x] Masonry
- [x] Center — native `.flex().items_center().justify_center()`
- [x] Container
- [x] AspectRatio
- [x] Inset / Padding — native `.p_*()`
- [x] Wrap — native `.flex_wrap()`
- [x] Absolute / Positioned — native `.absolute()`
- [x] Layer / ZStack
- [x] ScrollArea
- [x] Scrollbar
- [x] ScrollShadow
- [x] ScrollToTop
- [x] StickyHeader
- [x] SplitPane — horizontal, vertical, nested
- [x] ResizablePanel / ResizablePanelGroup → `layout::SplitPane`
- [x] ResizeHandle
- [x] Collapsible
- [x] Accordion / AccordionItem
- [x] Card / CardHeader / CardBody / CardFooter
- [x] Panel / PanelHeader
- [x] Section / SectionHeader
- [x] Group / Fieldset
- [x] Frame
- [x] Well
- [x] Sidebar
- [x] Drawer
- [x] Sheet
- [x] Page / PageHeader / PageContent
- [x] AppShell
- [x] MasterDetail
- [x] ThreeColumnLayout → `layout::SplitPane`
- [x] Dock / DockPanel
- [x] DockZone / DropIndicator
- [x] FloatingPanel
- [x] Pane / PaneGroup
- [x] Workspace — versioned layout snapshot
- [x] Viewport

## T04 Window & Shell — `src/shell`

- [x] TitleBar
- [x] WindowControls — macOS, Windows, Linux
- [x] TrafficLights → `shell::WindowControls`
- [x] WindowDragRegion — `shell::drag_region`: native drag area, Linux move, double-click zoom
- [x] WindowResizeBorder — `shell::ResizeBorder`: client decorations only; macOS and Windows resize natively
- [x] MenuBar → `menus::MenuBar` (T08b): the NativeMenu definitions, drawn in the window
- [x] NativeMenu — native `cx.set_menus()`
- [x] Toolbar / ToolbarGroup / ToolbarSeparator
- [x] StatusBar / StatusBarItem
- [x] ActivityBar
- [x] NavigationRail → `shell::ActivityBar`
- [x] TabBar
- [x] SplashScreen
- [x] AboutDialog
- [x] TrayIcon / TrayMenu — macOS `NSStatusItem`; other systems get an error
- [x] DockBadge — macOS dock tile; other systems get an error
- [x] JumpList — native `cx.set_dock_menu()`
- [x] SystemNotification — blocked: an unbundled app has no notification center; gpui 0.2.2 has no API
- [x] MultiWindow Manager
- [x] WindowSwitcher
- [x] QuickLauncher → `navigation::QuickLauncher` (T07c): a SearchPalette in an always-on-top window
- [x] MiniWindow / CompactMode
- [x] AlwaysOnTop — native `WindowKind::PopUp`
- [x] PictureInPicture → `shell::MiniWindow` at a screen corner; the host supplies the view
- [x] UpdateBanner / UpdateDialog
- [x] CrashReporter
- [x] OfflineIndicator
- [x] ZoomControl

## T05 Buttons & Actions — `src/buttons`

- [x] Button (T00)
- [x] IconButton (T00)
- [x] ButtonGroup
- [x] SplitButton → `menus::SplitButton` (T08a): its dropdown is a Menu
- [x] DropdownButton / MenuButton → `menus::DropdownMenu` (T08a)
- [x] ToggleButton
- [x] ToggleGroup
- [x] SegmentedControl
- [x] FloatingActionButton
- [x] LoadingButton → `buttons::Button` loading state, lands with Spinner (T11)
- [x] ConfirmButton — hold or click twice
- [x] HoldToConfirm → `buttons::ConfirmButton`
- [x] CopyButton
- [x] ShareButton
- [x] CloseButton
- [x] BackButton
- [x] MoreButton
- [x] ActionBar
- [x] BulkActionBar
- [x] ActionSheet
- [x] QuickActions
- [x] ShortcutHint → `buttons::Button::shortcut`

## T06a Forms · Text — `src/forms`

- [x] Input / TextField
- [x] TextArea → `forms::TextInput::multi_line`
- [x] PasswordInput
- [x] SearchInput
- [x] NumberInput
- [x] ScrubInput
- [x] CurrencyInput → `forms::NumberInput::currency`
- [x] PercentInput → `forms::NumberInput::percent`
- [x] UnitInput
- [x] EmailInput
- [x] UrlInput
- [x] PhoneInput
- [x] MaskedInput
- [x] PinInput / OTPInput
- [x] InlineEdit / EditableText
- [x] InputGroup / InputAddon
- [x] ClearableInput → `forms::Input::clearable`
- [x] AutoResizeInput → `forms::TextInput::multi_line`
- [x] MentionInput
- [x] HashtagInput → `forms::MentionInput` with `#`
- [x] TagInput / TokenInput
- [x] KeyValueInput
- [x] ListInput
- [x] PathInput — native dialog via `prompt_for_paths`
- [x] RegexInput
- [x] ExpressionInput
- [x] HotkeyInput / ShortcutRecorder

## T06b Forms · Selection

- [x] Checkbox
- [x] CheckboxGroup
- [x] CheckboxCard
- [x] Radio / RadioGroup
- [x] RadioCard
- [x] Switch / Toggle
- [x] Select
- [x] NativeSelect — blocked: gpui 0.2.2 has no native popup menu
- [x] Combobox
- [x] Autocomplete → `forms::Combobox::free`
- [x] MultiSelect
- [x] CascadeSelect / Cascader
- [x] TreeSelect → `lists::TreeSelect` (T13b): forms cannot import lists
- [x] TransferList
- [x] ListBox
- [x] ChoiceChips / FilterChips
- [x] Rating
- [x] Slider
- [x] RangeSlider
- [x] VerticalSlider → `forms::Slider::vertical`
- [x] Knob / Dial
- [x] Stepper

## T06c Forms · Date & Time

- [x] Calendar
- [x] DatePicker
- [x] DateRangePicker
- [x] TimePicker
- [x] DateTimePicker
- [x] MonthPicker / YearPicker / QuarterPicker
- [x] WeekPicker
- [x] RelativeDatePicker
- [x] TimezoneSelect
- [x] DurationPicker
- [x] CronEditor

## T06d Forms · Color

- [x] ColorPicker — HSV, RGB, HEX, alpha → `forms::ColorPicker`
- [x] ColorSwatch → `forms::ColorSwatch`
- [x] ColorPalette → `forms::ColorPalette`
- [x] EyeDropper — proved: `NSColorSampler`; sRGB read tested (`read_srgb`), the sampler draws out of process → `forms::EyeDropper`
- [x] GradientEditor → `forms::GradientEditor`

## T06e Forms · Files

- [x] FilePicker / FileInput → `forms::FileInput`
- [x] FolderPicker → `forms::PathInput::directories` (T06a)
- [x] DropZone → `forms::DropZone`
- [x] UploadList → `forms::UploadList`, built with Loading & Motion (T11b): its rows are ProgressBars
- [x] ImageUpload — preview, crop → lands with Media (T26): its crop is the ImageCropper
- [x] AvatarUpload → `forms::AvatarUpload`, built with Data Display (T12a): it is an Avatar you replace

## T06f Forms · Other

- [x] SignaturePad → `forms::SignaturePad`
- [x] CodeInput → `forms::CodeInput`, colored by `code_highlights`
- [x] JsonInput → `forms::JsonInput`, colored by `json_highlights`
- [x] FontPicker → `forms::FontPicker`
- [x] IconPicker → `forms::IconPicker`
- [x] EmojiPicker → `forms::EmojiPicker`
- [x] LanguageSelect → `forms::Combobox::languages`
- [x] CountrySelect → `forms::Combobox::countries`
- [x] CurrencySelect → `forms::Combobox::currencies`

## T06g Forms · Structure

- [x] Form → `forms::Form`, Cmd-Enter submits
- [x] FormField → `forms::FormField`
- [x] FormLabel — required mark, help tip → `forms::FormLabel`
- [x] FormDescription / HelperText → `typography::Caption`, placed by `FormField::description`
- [x] FormError / ValidationMessage → `forms::FormError`
- [x] FormSection → `forms::FormSection`
- [x] FormActions → `buttons::ActionBar`
- [x] FieldArray → `forms::FieldArray`; ListInput and KeyValueInput use it
- [x] InlineForm → `forms::InlineForm`
- [x] WizardForm / MultiStepForm → lands with Navigation (T07): its frame is the Wizard
- [x] DirtyIndicator → `forms::DirtyIndicator`

## T07a Navigation · Tabs & paths — `src/navigation`

- [x] Tabs — top, left, bottom → `navigation::Tabs`
- [x] EditorTabs → `navigation::EditorTabs`
- [x] TabOverflowMenu → `navigation::TabOverflowMenu`
- [x] Breadcrumb → `navigation::Breadcrumb`
- [x] Pagination → `navigation::Pagination`
- [x] LoadMore → lands with Loading (T11a): its busy state is a Spinner
- [x] Stepper / Steps / Wizard → `navigation::Steps`, `navigation::Wizard`; also T06g WizardForm

## T07b Navigation · Places

- [x] Sidebar Navigation / NavItem / NavGroup → `navigation::NavItem`, `navigation::NavGroup`
- [x] NavigationMenu → `navigation::NavigationMenu`
- [x] ActivityBar Item → `shell::ActivityBar`
- [x] BackForwardNavigation → `navigation::BackForwardNavigation`
- [x] History Navigation → `navigation::BackForwardNavigation`
- [x] Anchor / TableOfContents → `navigation::Anchor`, `navigation::TableOfContents`
- [x] JumpTo / GoToLine → `navigation::GoToLine`

## T07c Navigation · Palettes & tour

- [x] CommandPalette → `navigation::CommandPalette`
- [x] QuickOpen → `navigation::QuickOpen`
- [x] QuickSwitcher → `navigation::QuickSwitcher`
- [x] SearchPalette → `navigation::SearchPalette`
- [x] SpotlightSearch → `navigation::SearchPalette`; T04 QuickLauncher opens it always on top
- [x] Tour / Onboarding → `overlays::Tour` (T09b): its steps are Spotlights

## T08a Menus · Menu & hosts — `src/menus`

- [x] Menu / MenuItem / MenuGroup / MenuSeparator → `menus::Menu` (`group`, `separator`), `menus::MenuItem`
- [x] SubMenu → `menus::MenuItem::submenu`
- [x] CheckboxMenuItem → `menus::MenuItem::check`
- [x] RadioMenuItem → `menus::MenuItem::radio`
- [x] MenuItemShortcut → `menus::MenuItem::keys`
- [x] MenuItemIcon → `menus::MenuItem::icon`
- [x] ContextMenu → `menus::ContextMenu`
- [x] DropdownMenu → `menus::DropdownMenu`; also T05 DropdownButton / MenuButton, and SplitButton as `menus::SplitButton`
- [x] OverflowMenu → `menus::OverflowMenu`

## T08b Menus · Bar, search & pie

- [x] MenuBar Menu → `menus::MenuBar`; also T04 MenuBar: the native menus, drawn in the window
- [x] MegaMenu → `navigation::NavigationMenu`: each entry opens a panel of links with a line of detail
- [x] SearchableMenu → `menus::SearchableMenu`
- [x] PieMenu / RadialMenu → `menus::PieMenu`, `menus::PieItem`

## T09a Overlays · Popovers & dialogs — `src/overlays`

- [x] Tooltip → `primitives::Tooltip`
- [x] Popover → `overlays::Popover`
- [x] HoverCard → `overlays::HoverCard`
- [x] Dialog / Modal → `overlays::Dialog`
- [x] AlertDialog → `overlays::AlertDialog`
- [x] ConfirmDialog → `overlays::ConfirmDialog`
- [x] PromptDialog → `overlays::PromptDialog`
- [x] FullscreenDialog → `overlays::Dialog::fullscreen`
- [x] Sheet → `layout::Sheet`
- [x] Drawer → `layout::Drawer`

## T09b Overlays · Guides & floats

- [x] Lightbox → `overlays::Lightbox`, `overlays::Slide`
- [x] Spotlight / Coachmark → `overlays::Spotlight`; also T07c Tour / Onboarding and T37 WelcomeTour as `overlays::Tour`
- [x] FloatingToolbar → `overlays::FloatingToolbar`
- [x] Callout / Peek → `overlays::Peek`
- [x] DropdownPanel → `overlays::Popover`
- [x] InlinePopup → `overlays::Popover` with the Link variant
- [x] ToastViewport → lands with Feedback (T10): it holds Toasts

## T10a Feedback · Messages — `src/feedback`

- [x] Toast — success, error, warning, info, action, undo; also T09b ToastViewport → `feedback::Toast`, `feedback::Toaster`, `feedback::ToastViewport`
- [x] Notification → `feedback::Notification`
- [x] NotificationCenter → `feedback::NotificationCenter`; also T10b EmptyState, which it shows when empty
- [x] Alert → `feedback::Alert`
- [x] Banner → `feedback::Banner`
- [x] Callout / Admonition → `feedback::Callout`
- [x] InlineMessage → `feedback::InlineMessage`
- [x] StatusMessage → `feedback::StatusMessage`
- [x] Snackbar → `feedback::Toast`
- [x] UndoToast → `feedback::Toast`

## T10b Feedback · States

- [x] ErrorView → `feedback::ErrorView`
- [x] ErrorBoundary — renders and logs a `Result` error; never catches panics → `feedback::ErrorBoundary`
- [x] NotFound / 404 → `feedback::ErrorView::not_found`
- [x] NoPermission / 403 → `feedback::ErrorView::no_permission`
- [x] Maintenance → `feedback::ErrorView::maintenance`
- [x] Offline → `feedback::ErrorView::offline`
- [x] EmptyState → `feedback::EmptyState`, built with T10a
- [x] Result → `feedback::ResultView`; a plain `Result` would shadow std's
- [x] ConfirmationCard → `feedback::ConfirmationCard`
- [x] SavingIndicator → `feedback::SavingIndicator`
- [x] SyncStatus → `feedback::SyncStatus`
- [x] ConnectionStatus → `feedback::ConnectionStatus`; its dot is `shell::OfflineIndicator`'s
- [x] Countdown → `feedback::Countdown`
- [x] Timer → `feedback::Timer`