Frontend

Feedback & Display Components

Relevant source files

The following files were used as context for generating this wiki page:

This section documents the UI components responsible for communicating system status, displaying structured data, and providing interactive visual feedback. These components range from simple status indicators like Badge and Alert to complex interactive systems like Sortable drag-and-drop and the JsonTableViewer.

Status & Feedback Primitives

Alert

The Alert component follows the shadcn-svelte pattern but includes specialized variants to align with the application's impact-level taxonomy src/lib/components/ui/alert/alert.svelte:8-27.

Variant	Description	CSS Hook
`default`	Standard informational alert.	`border-border bg-background`
`destructive`	Standard error alert.	`border-destructive/30 bg-destructive/5`
`impactCritical`	Maps to `CRITICAL` impact level.	`pb-shell-error-card--critical`
`impactHigh`	Maps to `HIGH` impact level.	`pb-shell-error-card--error`
`impactMedium`	Maps to `MEDIUM` impact level.	`pb-shell-error-card--warning`
`impactLow`	Maps to `LOW` impact level.	`pb-shell-error-card--info`

Sources: src/lib/components/ui/alert/alert.svelte:1-56

Badge

The Badge component utilizes a specialized utility, badgeClassesFromToken, to map Tailwind-like color tokens (e.g., zinc-300) to high-contrast accessible color schemes src/lib/colors/badge.ts:19-23. It calculates appropriate background and text colors to ensure "Excel-like" readability src/lib/colors/badge.ts:25-32.

Sources: src/lib/colors/badge.ts:1-75

EventCard

Used primarily in the ErrorsPanel to display log entries and system events src/lib/shell/sheets/panels/ErrorsPanel.svelte:136-190. It provides a structured layout including a label, title, message, and timestamp.

Sources: src/lib/components/ui/event-card/event-card.svelte:1-45, src/lib/components/ui/event-card/event-card-time.svelte:1-24

Error Visualization

RFC Error Dialog

A specialized full-screen dialog for inspecting RFC7807 compliant error objects src/lib/components/ui/rfc-error-dialog.svelte:18-38. It features a dual-mode preview:

Aesthetic Mode: Renders the error data using JsonTableViewer src/lib/components/ui/rfc-error-dialog.svelte:159.
Raw Mode: Renders a syntax-highlighted JSON string using the shiki highlighter src/lib/components/ui/rfc-error-dialog.svelte:61-72.

The dialog uses a Dock component at the top to toggle between these modes src/lib/components/ui/rfc-error-dialog.svelte:123-144.

Sources: src/lib/components/ui/rfc-error-dialog.svelte:1-200

JsonTableViewer

A recursive component that transforms complex JSON objects into a readable table/grid structure src/lib/components/ui/JsonTableViewer.svelte:7-11.

Root Level: Uses Table.Root for primary properties src/lib/components/ui/JsonTableViewer.svelte:21-63.
Nested Level: Uses a CSS grid layout to maintain alignment without breaking table semantics src/lib/components/ui/JsonTableViewer.svelte:66-109.
Arrays: Renders indices as "Item X" badges src/lib/components/ui/JsonTableViewer.svelte:74-76.

Sources: src/lib/components/ui/JsonTableViewer.svelte:1-111

Mapping Error Data to UI

The following diagram illustrates how raw error data flows into the specialized feedback components.

Error Display Data Flow

Code
graph TD
    subgraph "Data Space"
        RFC["RFC7807Error Object"]
        IL["ImpactLevel: CRITICAL|HIGH|MEDIUM|LOW"]
    end

    subgraph "Component Space"
        RED["rfc-error-dialog.svelte"]
        JTV["JsonTableViewer.svelte"]
        EC["EventCard.svelte"]
        AV["alertVariants"]
    end

    RFC -->|Passed to| RED
    RED -->|Recursive Render| JTV
    IL -->|impactToEventColor| EC
    IL -->|impactToAlertVariant| AV

Sources: src/lib/components/ui/rfc-error-dialog.svelte:47-50, src/lib/shell/sheets/panels/ErrorsPanel.svelte:69-80, src/lib/components/ui/alert/alert.svelte:17-21

Layout & Interactive Components

Sortable (Drag-and-Drop)

The Sortable system provides a Svelte 5 rune-based implementation for reordering lists. It consists of three main parts:

Sortable: The root container that manages the global drag state and reordering logic src/lib/components/ui/sortable/sortable.svelte:6-18.
SortableItem: A wrapper for individual list items that handles dragstart and dragover events src/lib/components/ui/sortable/sortable-item.svelte:23-44.
SortableHandle: A specific sub-element that "arms" the parent item for dragging, preventing accidental drags when interacting with other item content src/lib/components/ui/sortable/sortable-handle.svelte:14-18.

The system uses a move function with getBoundingClientRect to perform FLIP (First, Last, Invert, Play) animations during reordering src/lib/components/ui/sortable/sortable.svelte:86-112.

Sources: src/lib/components/ui/sortable/sortable.svelte:1-190, src/lib/components/ui/sortable/sortable-item.svelte:1-46, src/lib/components/ui/sortable/sortable-handle.svelte:1-25

Dock

Inspired by macOS, the Dock provides a magnified icon navigation bar. It uses svelte-motion for spring-based animations src/lib/components/ui/dock/dock-icon.svelte:39-43. The magnification is calculated based on the mouse's proximity to the icon center using useTransform src/lib/components/ui/dock/dock-icon.svelte:28-37.

Sources: src/lib/components/ui/dock/dock-icon.svelte:1-78

Window & Resizable

Window: A container for modular UI pieces, often used for floating utilities.
Resizable: Provides ResizablePaneGroup and ResizableHandle for creating adjustable multi-column or multi-row layouts.

Sources: src/lib/components/ui/window/window.svelte, src/lib/components/ui/resizable/resizable-pane-group.svelte

Visual Interaction Flow

The interaction between Sortable entities and their internal state is managed via a shared context.

Sortable Component Interaction

Code
sequenceDiagram
    participant H as SortableHandle
    participant I as SortableItem
    participant R as Sortable (Root)
    
    H->>I: onmousedown (sets data-sortable-drag-armed)
    I->>R: ondragstart (calls ctx.onDragStart)
    R->>R: startGlobalDragMode()
    Note over R: items array reordered in $state
    I->>R: ondragover (calls ctx.onDragOver)
    R->>R: move(from, to) with FLIP animation
    I->>R: ondragend (calls ctx.onDragEnd)
    R->>R: stopGlobalDragMode()

Sources: src/lib/components/ui/sortable/sortable-handle.svelte:14-18, src/lib/components/ui/sortable/sortable-item.svelte:29-37, src/lib/components/ui/sortable/sortable.svelte:118-132, src/lib/components/ui/sortable/sortable.svelte:86-112

Miscellaneous Display

Tooltip: Wraps elements to show brief descriptions on hover, utilizing bits-ui primitives src/lib/components/ui/tooltip/tooltip-content.svelte:14-22.
Skeleton: Provides placeholder loading states src/lib/components/ui/skeleton/skeleton.svelte.
ScrollArea: A custom-styled scrollbar implementation src/lib/components/ui/scroll-area/scroll-area.svelte.
Sonner: Integration for transient toast notifications.

Sources: src/lib/components/ui/tooltip/tooltip-content.svelte:1-23, src/lib/components/ui/sonner/sonner.svelte

Last modified on July 13, 2026

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