The root cause of the Y-offset: ELK places main flow nodes at
arbitrary positions (e.g., y=679) within its root graph, and the
frontend rendered them at those raw positions. Handler sections were
already normalized via shiftNodes, but the main section was not.
Now useDiagramData.ts applies the same normalization to the main
section: computes bounding box, shifts nodes and edges so the section
starts at (0,0). This fixes the Y-offset regardless of what ELK
produces internally.
Removed the backend normalizePositions (was ineffective because handler
nodes at y=12 dominated the global minimum, preventing meaningful shift
of main flow nodes at y=679).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Backend:
- Set POLYLINE edge routing on ELK root — eliminates curved/bent edges
between horizontally aligned nodes
- Collect edges from handler section roots (not just main root) so
internal handler edges are included in the layout output
- Use correct root reference for coordinate calculation per edge
Frontend:
- Render ALL edge points as line segments (polylines), not cubic bezier.
ELK bend points are waypoints, not bezier control points — the cubic
bezier interpretation caused false curves.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Toggle tracing: "T" → 👣 (footprints — trace = following the path)
- Configure tap: ✎ (pencil) → 🚰 (water tap — tap = intercept the flow)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Added centerOnNodeId prop to ProcessDiagram. When set, the diagram
pans to center the specified node in the viewport. Jump to Error
now selects the failed processor AND centers the viewport on it.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
When an onException/error handler section has any executed processors
(overlay entries), it renders with a stronger red tint (8% vs 3%),
a solid red border frame, and a solid divider line. This makes it
easy to identify which handler was triggered when multiple exist.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
The execution overlay data maps to the root route's processor IDs. When
drilled into a sub-route, those IDs don't match, causing all nodes to
appear dimmed. Now clears the overlay and shows pure topology when
viewing a sub-route via drill-down.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
When drilled into a sub-route, the pre-fetched diagramLayout (loaded by
content hash for the root execution) doesn't contain the sub-route's
diagram. Only use the pre-loaded layout for the root route; fall back to
useDiagramByRoute for drilled-down sub-routes.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Synthesize COMPLETED state for ENDPOINT nodes when overlay is active
(endpoints are route entry points, not in the processor execution tree)
- Move status badge (check/error) inside the card (top-right, below top bar)
to avoid collision with ConfigBadge (TRACE/TAP) badges
- Include ENDPOINT nodes in edge traversal check so the edge from
endpoint to first processor renders as green/traversed
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
React's onWheel is passive by default, so preventDefault() doesn't stop
page scrolling. Attach native wheel listener with { passive: false } via
useEffect instead.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Add a left/right stepper widget to compound node headers (LOOP, SPLIT,
MULTICAST) when iteration overlay data is present. Thread executionOverlay,
overlayActive, iterationState, and onIterationChange props through
ProcessDiagram -> CompoundNode -> children and ProcessDiagram ->
ErrorSection -> children so leaf DiagramNode instances render with
execution state (green/red badges, dimming for skipped nodes).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Add green solid edges for traversed paths and dashed gray for
not-traversed when execution overlay is active. Includes green
arrowhead marker and overlay threading through CompoundNode and
ErrorSection.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
DiagramNode now accepts executionState and overlayActive props to render
execution status: green tint + checkmark badge for completed nodes, red
tint + exclamation badge for failed nodes, dimmed opacity for skipped
nodes. Duration is shown at bottom-right, and a drill-down arrow appears
for sub-route failures.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Define the execution overlay type system (NodeExecutionState, IterationInfo,
DetailTab) and extend ProcessDiagramProps with optional overlay props. Add
diagramLayout prop so ExecutionDiagram can pass a pre-fetched layout by content
hash, bypassing the internal route-based fetch in useDiagramData.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Small overview panel in the bottom-left showing the full diagram
layout with colored node rectangles and an amber viewport indicator.
Click or drag on the minimap to pan the main diagram.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Update design spec with implementation notes covering recursive
compound nesting, edge z-ordering, ON_COMPLETION sections, drill-down
navigation, CSS transform zoom, and HTML overlay toolbar.
Increase SECTION_GAP to 80px for better visual separation between
completion and error handler sections.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Double-click a DIRECT or SEDA node to navigate into that route's
diagram. Breadcrumbs show the route stack and allow clicking back
to any level. Escape key goes back one level.
Route ID resolution handles camelCase endpoint URIs mapping to
kebab-case route IDs (e.g. direct:callGetProduct → call-get-product)
using the catalog's known route IDs.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Add ON_COMPLETION to backend COMPOUND_TYPES and frontend rendering.
Completion handlers render as teal-tinted sections between the main
flow and error handlers, structurally parallel to onException.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Recursive compound rendering: CompoundNode checks if children are
themselves compound types (WHEN inside CHOICE) and renders them
recursively. Added EIP_WHEN, EIP_OTHERWISE, DO_CATCH, DO_FINALLY
to frontend COMPOUND_TYPES.
- Edge z-ordering: edges are distributed to their containing compound
and rendered after the background rect, so they're not hidden behind
compound containers.
- Error section sizing: normalize error handler node coordinates to
start at (0,0), compute red tint background height from actual
content with symmetric padding for vertical centering.
- Toolbar as HTML overlay: moved from SVG foreignObject to absolute-
positioned HTML div so it stays fixed size at any zoom level. Uses
design system tokens for consistent styling.
- Zoom: replaced viewBox approach with CSS transform on content group.
Default zoom is 100% anchored top-left. Fit-to-view still available
via button.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
ELK renderer:
- Add EIP_WHEN, EIP_OTHERWISE, DO_CATCH, DO_FINALLY to COMPOUND_TYPES
so branch body processors nest inside their containers
- Rewrite node creation and result extraction as recursive methods
to support compound-inside-compound (CHOICE → WHEN → processors)
- Use fixed NODE_WIDTH=160 for leaf nodes instead of variable width
Frontend:
- Fix mousewheel crash: capture getBoundingClientRect() before
setState updater (React nulls currentTarget after handler returns)
- Anchor fitToView to top-left instead of centering
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
New interactive route diagram component with SVG rendering using
server-computed ELK layout coordinates. TIBCO BW5-inspired top-bar
card node style with zoom/pan, hover toolbars, config badges, and
error handler sections below the main flow.
Backend: add direction query parameter (LR/TB) to diagram render
endpoints, defaulting to left-to-right layout.
Frontend: 14-file ProcessDiagram component in ui/src/components/
with DiagramNode, CompoundNode, DiagramEdge, ConfigBadge, NodeToolbar,
ErrorSection, ZoomControls, and supporting hooks. Dev test page at
/dev/diagram for validation.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
