Playground
Practical workflow for validating editor behavior during development and release hardening.
Suggested sequence
- Core editing behavior
- Toolbar command behavior
- Plugin dialog/sidebar behavior
- Multi-instance isolation
- Theme parity
- Undo/redo after structural edits
Core editing checks
- Typing, selection, copy/paste
- Enter/backspace at line boundaries
- Placeholder visibility and empty-state behavior
- Focus/blur transitions
Toolbar and command checks
- Formatting commands toggle correctly
- List/checklist conversions remain stable
- Alignment/indent/direction commands apply expected DOM updates
- History commands restore content predictably
Plugin interaction checks
- Link/color/math/special-character dialogs
- Spell-check and comments side panels
- Media and table contextual workflows
- Preview/print flows
Multi-instance checks
- Sidebars mount to the correct editor host
- Closing one instance panel does not open/toggle another
- Command execution stays scoped to active editor
Theme checks
- Light and dark mode icon contrast
- Dialog readability and hover/focus states
- Table/code block readability in dark mode
Release gate checklist
- No critical console errors under normal interaction
- No cross-instance command leakage
- No flickering overlays or unstable panel positioning
- No regressions in readonly behavior
API Surface
| Surface | Type | Notes |
|---|---|---|
| Command execution matrix | Validation surface | Confirms formatting/list/structure commands behave correctly |
| Event lifecycle matrix | Validation surface | Confirms focus, change, selectionChange, blur stability |
| Multi-instance isolation checks | Validation surface | Confirms dialogs/sidebars/status updates remain instance-scoped |
| Theme parity checks | Validation surface | Confirms light/dark consistency for toolbar/content/dialogs/panels |
| Runtime config toggles | Validation surface | Confirms autosave/security/performance/accessibility updates behave correctly |
Config Matrix
| Validation Area | Key Config/Surface |
|---|---|
| Editor behavior | Core commands + history |
| UI behavior | Toolbar, dialogs, sidebars |
| Operational behavior | Autosave/security/performance/accessibility |
Validation Checklist
- Repeatability across browsers/devices
- Stability in long sessions and large documents
- Correct behavior with multiple visible editors
- Theme consistency for all plugin UI surfaces