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TermRock
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Application patterns

Pattern · Composites

Schema Browser

Application recipe composed from public TermRock building blocks; domain state and effects remain host-owned.

Kind
paint
Input
interactive
Canvas
120×40

Live preview

Loading terminal preview.

Static terminal poster. Choose Run live to start the Rust demo.

Ghosttyschema-browser/basic
Loading terminal poster…
○ loading posterNo input — rendered state only
Schema Browser · exact mounted Rust story
01 · Purpose
What it is for
Application recipe composed from public TermRock building blocks; domain state and effects remain host-owned.
Best fit: Composites · composite · Tree
02 · Behavior
What the mounted story proves
  1. 01
    SchemaBrowser
    Representative 120×40 terminal state.
  2. 02
    Passive paint
    No keyboard or pointer action is claimed by this representative story.
  3. 03
    Evidence stays explicit
    0 covered · 9 partial · 5 missing axes.
03 · Implement
Install, then start from exact code
Install
cargo add termrock --git https://github.com/tailrocks/termrock.git --rev 5283c2acf9154d0cfcd37b1ffe821c00faf90ea2
Add TermRock once. Keep domain effects in the host application.
Minimal implementation
Exact Rust setup used by schema-browser/basic.
Open to load code.
04 · Adapt
Variants and composition
Public building blocks
Tree
Supporting types
BreadcrumbItem · QuickOpenItem · QuickOpenPreview · StatefulWidget · TreeNode · TreeNodeStatus
05 · Reference
API, tokens, accessibility
API
SchemaBrowserOpen source ↗
Tokens
DesignSystemInspect exact story code for roles and capability projection.
Accessibility
Input contract mountedNo input claim in the representative story.
Contract
Evidence in progress0/23 axes covered
06 · Go deeper
Advanced guidance
Authored implementation guidance
Hierarchical catalog navigator for connections → databases → schemas →
tables/views → columns/indexes/constraints/routines. Host owns metadata fetch
and SQL; TermRock paints the tree and emits typed requests.


When to use / when not


Use SchemaBrowserPrefer
DB catalog side pane—
Filesystem explorerFileTree
Generic hierarchyTree
Query body / resultsQueryEditor · ResultGrid


Ownership


ConcernOwner
Catalog introspection, reconnectHost
Cursor, filter, presentation, expand preserve setSchemaBrowserState
Children load / open query / DDL UIHost via outcomes


Lazy expansion & preserve


    

  1. Host projects flattened visible rows (branch + TreeNodeStatus::Lazy).
    2. 

  2. Expand → LoadChildrenRequested or Toggle.
    3. 

  3. state.expanded accumulates open branch ids.
    4. 

  4. On refresh/reconnect: reproject, then apply_expanded_set(&mut entries, &state.expanded) and state.reconcile_expanded(&live_ids).
    5. 



Presentation


SidePane (default) → Drawer → Fullscreen via Ctrl+M or auto from bounds.


Keys


KeyAction
/ · r · RFilter · refresh node · refresh all
y · p · Ctrl+OCopy path · preview · QuickOpen
q · d · xQuery · describe · context
Ctrl+M · Ctrl+Shift+CPresentation · reconnect
Ownership boundary
TermRock owns reusable terminal rendering and interaction state. The host owns domain data, policy, persistence, authorization, and side effects.
Evidence status
0 covered, 9 partial, and 5 missing contract axes. Missing evidence is not a behavior claim.
Result Grid
Application recipe composed from public TermRock building blocks; domain state and effects remain host-owned.
Session Picker
Application recipe composed from public TermRock building blocks; domain state and effects remain host-owned.