Glossary

Key terms used throughout the Dashboard Editor documentation.

Term	Definition
Canvas	The main editing area where dashboard rows and columns are displayed and manipulated.
Cell	A column within a row, identified by a row ID and column ID pair. A cell can be empty or hold one component.
ChartData	A typed data container pairing a list of DataPoint instances with a ChartType. Validates data on construction.
ChartType	An enum defining the kind of chart to render: pie, donut, bar, stackedBar, groupedBar, line, multiLine, area, sparkline, gauge.
Column	A DashboardColumn instance within a row. Uses a flex factor for relative width sizing. Holds zero or one component.
Command	A DashboardCommand instance that encapsulates a reversible layout mutation. Implements execute() and undo().
CommandHistory	A stack-based manager that records executed commands and supports undo/redo traversal.
Component	A registered DashboardComponentConfiguration (typically a ComponentDescriptor) that defines how a widget looks and behaves in the dashboard.
ComponentDescriptor	A declarative, composition-based component definition. Accepts properties factory, render callback, config panel, and thumbnail as constructor parameters.
ComponentCategory	Metadata for organizing components in the editor palette, with an ID, display name, icon, and sort order.
Config Panel	The right-side panel in the editor that displays property editors for the selected component.
DashboardDescriptor	A named group of components belonging to a specific product or domain (e.g., 'LMS', 'IPQC').
DashboardEditorController	A facade that composes the DashboardEngine with history, persistence, selection, and analytics extensions.
DashboardEditorRegistry	A scoped registry created from DashboardDescriptor instances and passed into controllers, engines, views, and layout deserialization.
DashboardEngine	The core MobX-based state kernel that owns the reactive layout, executes commands, and emits events.
DashboardEvent	A structured event emitted by the engine (layout changed, command executed/undone/redone, batch start/end).
DashboardExtension	A pluggable module that observes engine events and can maintain its own state. Built-in extensions: history, persistence, selection, analytics.
DashboardLayout	The top-level model: a versioned container of rows with optional metadata. Serializable to/from JSON.
DataPoint	A universal data model with three dimensions: label (category), value (numeric), series (grouping).
Dirty	A flag tracked by the persistence extension indicating that the layout has unsaved changes since the last save or load.
Extension	See DashboardExtension.
Flex	An integer value (1-6) assigned to each column, determining its proportional width within a row. All columns in a row sum to 6.
Layout	See DashboardLayout.
Palette	The component picker in the editor UI, organized by category, from which users drag components into cells.
PropertyCollection	A type-safe, MobX-observable collection of properties from the Property System. Used for component configuration.
Row	A DashboardRow instance that contains 1-6 columns. Rows stack vertically and are ordered by their order field.
Component Instance	A ComponentInstance placed in a column. References a registered component by key and holds a PropertyCollection for configuration.
Slot	Synonym for cell -- a position in the grid identified by row ID and column ID.
Viewport Fraction	A sizing mode where row height is expressed as a fraction of the viewport height (e.g., 0.5 = 50% of screen).

Next Steps

• API Reference -- Quick reference tables
• Architecture -- System design overview
• Getting Started -- Build your first dashboard