Cable type creation is managed via the admin modal (⚙ → Cable types
tab), which makes the prominent sidebar affordance unnecessary. Drop
the button element and its click handler; the legend itself (rows,
edit button per row, active-type selection) is unchanged.
m: wheel to zoom around the cursor, drag with middle-mouse / Space-held
to pan, `0` or `Home` to reset, Fit button to frame all content.
Implementation:
- state.view = { x, y, zoom } drives the SVG viewBox via applyViewBox().
Base canvas is 2000×1500; viewBox = (view.x, view.y, 2000/zoom, 1500/zoom).
- Zoom clamped to 0.2x..5x. wheelZoom captures the cursor's world coord
before + after the zoom-step and shifts view.x/y so it stays under
the cursor (Excalidraw-style cursor-anchored zoom).
- startPan captures screen→world scale from getScreenCTM at pointerdown
and converts pointer-move deltas into view.x/y updates — robust across
zoom levels. Triggered by middle-mouse OR Space+drag. Releases pointer
capture + persists the view on pointerup.
- resetView (0 / Home) restores zoom=1, x=0, y=0.
- fitToContent walks frames + devices + IO markers, computes their bbox
with 40px padding, picks zoom = min(BASE_W/bw, BASE_H/bh), and centres
the bbox inside the viewBox (compensating for aspect-ratio meet).
- Header gets a "100%" zoom indicator + Fit button. URL persists view
as ?z=1.200&px=…&py=… so reload returns to the same view.
Because everything goes through viewBox (not CSS transform), svgPoint
still maps screen pixels to world coords via getScreenCTM. Existing
hit-tests, drag, port/cable placement all keep working unchanged.
m wants 'this device connects to ...' declared from the device itself,
not a global sidebar list.
- Device inspector gets a '+ Requirement' button under its Requirements
section. Click pre-fills the modal with from_device_id = this device,
so m only picks the other endpoint + cable type + must/nice.
- Existing requirement rows in the device inspector remain clickable —
they jump to the requirement's own inspector pane.
- New 5th admin tab 'Requirements' carries the all-projects-wide list
with Edit + Delete actions per row and a single '+ Add requirement'
entry point (uses the same modal). Edit/Add close the admin modal
so the requirement modal isn't stacked on top.
- Left sidebar 'Requirements' section + '+ Requirement' button removed.
The legend + tools sections reclaim the freed real estate.
renderRequirements() and the renderRequirements call site in render()
deleted (no consumer left). #btn-add-requirement boot wiring removed.
Header gear ('⚙ Admin') opens a wide modal with four tabs:
- **Projects** — list, rename, edit drawing_name + description, delete
with typed-name confirm. Wires the existing PATCH /projects/:id and
DELETE /projects/:id?confirm=<name> endpoints; renaming was previously
only reachable via the API.
- **Cable types** — full CRUD with the global-scope banner. Mirrors the
legend's quick edit but in a tabular list, plus an inline "+ Add"
form at the bottom.
- **Device types** — built-ins listed read-only with a locked badge
showing kind, description, and port profile (each port row tinted
with the cable_type's colour). Project-custom types under the active
project get editable name / kind / icon / description + Delete.
Port-profile editing on custom types is still deferred (port-profile
reshape will land in a follow-up).
- **Setup templates** — read-only list of built-ins with member devices
and connection requirements expanded under each.
The modal re-fetches projects / cable types / setup templates on open
so it reflects current state regardless of what m did via inspector
panes while it was closed.
Files:
- index.html: ⚙ Admin button + #modal-admin dialog scaffold.
- main.js: patchProject + createDeviceType/patchDeviceType/deleteDeviceType
API helpers; openAdminModal + switchAdminTab + 4 render functions.
- style.css: .admin-shell / .admin-tabs / .admin-row + state classes.
Export button is no longer disabled. On click it POSTs to the export
endpoint and shows a toast next to the button:
✓ Exported · open in mxdrw (with viewer URL)
✗ Export failed — <detail>
+Port (device inspector):
- New button on the device inspector arms a port-placement tool with
the device + currently-active cable type pre-selected.
- Click anywhere on the canvas: snapToDeviceEdge() finds the closest
edge of the selected device, clamps the perpendicular coord, POSTs a
new port. The new port renders immediately (state.ports.push +
render()).
- Per-port × delete button in the inspector ports grid.
Manual cable draw:
- Port circles are now clickable (slice 4 had pointer-events:none).
- Click a port → starts a cable draw with that port as the source
(state.cableDrawFromPortID, port highlighted via .cable-from class).
- Click another port → POSTs a cable with from_port_id + to_port_id,
type derived from source port, auto=false. If the target port's type
differs, confirm-prompt warns m before committing.
- Shift+click target port → binds to the target's parent device
(to_device_id) instead of the port.
- Click an IO marker mid-draw → terminates the cable with to_io_id.
- Esc cancels the draw + clears state.cableDrawFromPortID.
- "Draw cable" toolbar button is now enabled (data-tool=cable, keyboard
is implicit via port-click). armTool() teardown clears the source-port
state.
Cable inspector tweak (slice 6 callback):
- "driver" row now renders as a clickable button showing the
requirement's "FromName ↔ ToName" instead of the raw id; click jumps
the inspector to that requirement.
CSS:
- tool-port + tool-cable add the same crosshair cursor as the other
tools (descendant-targeted with !important to beat svg-draggable's
grab cursor — same fix-pattern as slice 3's cursor-cache pass).
- .port-circle.cable-from gives the source port a glow.
- .btn-link styles for inspector inline buttons.
Header gains a Solve button (keyboard S) + Apply template button.
Canvas:
- Cables render as straight lines port→port (or device-centre when the
endpoint is a whole device, or io-marker centre). Auto-cables get a
dashed stroke; manual cables (auto=0) solid. Stroke colour = cable_type.
- Click a cable to select it → inspector pane updates.
Solve preview-diff modal:
- Calls POST .../solve?preview=1 on open.
- Renders cables_added, cables_removed, bundles_added in colour-coded
lists. Unsatisfied entries get a class="unmet" badge + one-click
quick-fix:
* "no free <type> port" → "+ Add <type> port to <device> and re-solve"
fires POST .../devices/:id/ports-and-resolve in one round-trip and
re-renders the preview.
* "ambiguous cable type" → "Specify cable type…" re-opens the
requirement modal.
* "no compatible cable type" with a preferred type → "+ Add port…"
quick-fix on the from-side device.
- Apply → POST .../solve (no preview) → re-snapshot to pick up new
cable ids + bundle assignments.
Cable inspector (kind=cable):
- Shows type, from-endpoint, to-endpoint labels.
- For solver-owned cables, shows the driving requirement (best-effort
match by unordered device pair + type) and a "Promote to manual"
button (PATCH with `promote: true` flips auto→0).
- Delete button on both auto and manual cables.
Apply-template flow:
- "Apply template…" header button opens a wide modal with a template
dropdown (Living Room / Home Office / Server Rack) + a preview panel
showing each device row (skip checkbox + editable name input) and
the template's requirements.
- Submit → POST .../apply-template with name_overrides + skip_devices,
then re-snapshot.
State + snapshot:
- state.cables, state.bundles, state.setupTemplates added.
- activateProject pulls them from the snapshot; teardown on switch.
Snapshot now carries connection_requirements; state.requirements is
populated on project switch.
Sidebar:
- New "Requirements" section between Cable types and Tools.
- Each row shows "A ↔ B · cable-type" plus a must/nice badge. Clicking
a row selects the requirement (inspector pane updates).
+ Requirement modal:
- Device-pair pickers (autocompletes from the project's current devices).
- Cable-type picker with "— solver picks —" as the first option (saves
preferred_cable_type_id as null on the wire).
- "Must connect" checkbox (default on); notes textarea.
- POSTs to /api/projects/:pid/connection-requirements. 409 collisions
(reversed-pair duplicates) surface as inline form errors.
Drag-from-A-to-B gesture:
- New tool `req` (keyboard R + "Drag req A→B" button). Arming the tool
+ pointerdown on a device starts a dashed-line preview. Pointerup on
another device opens the modal with from/to pre-filled. Anywhere
else cancels. Crosshair cursor while armed.
Inspector:
- Device pane gains a "Requirements" section listing every requirement
involving the selected device, sorted by the other device's name.
Each row is clickable → inspector jumps to that requirement.
- New `requirement` selection kind with its own inspector renderer
showing from/to, cable type, must/nice toggle button, debounced
notes textarea, "Edit" (re-opens modal), and Delete.
Delete of a device cleans up its requirements in local state (server
already CASCADEs the rows).
Modal-driven +Dev (replaces the v3 inline namer):
- Tool armed → click on canvas captures the click position + frame_id
from frameAt(p), then opens a #modal-new-device dialog.
- Dialog has a <select> grouped by `kind` for built-ins, then
project-custom rows, then "Custom (no type)" at the bottom.
- Default selection is the first built-in (NAS). Name input is
auto-pre-filled to <type-name>, bumping to <type-name>-N if a name
collision is detected in the current device list.
- Submit POSTs name + type_id + x/y/w/h + frame_id. Server seeds the
ports in the same transaction; we re-snapshot to pick them up.
Canvas:
- After each device's <rect> + label, render the device's ports as
white-filled <circle>s with stroke = the port's cable_type colour.
- Position: (device.x + port.x_offset, device.y + port.y_offset). The
seeder's "evenly along the edge" layout means ports already sit on
the device's bottom edge by default and follow the device on drag
(because they re-render from the same x/y on every renderCanvas).
- Ports themselves are `pointer-events: none` for slice 4 — selection
remains device-level. Per-port click semantics ship in slice 7
(manual cable draw).
Inspector device pane:
- New "type" row showing the type name + a "(custom)" badge for
project-custom types, or "Custom (no type)" for freeform.
- New "Ports" section with one row per seeded port: cable-type-colour
swatch, label, "unconnected" placeholder. Label falls back to the
cable type's name when the seeded label_prefix was blank.
State + snapshot:
- state.ports populated from snap.ports; cleared on project switch /
404.
- state.deviceTypes hydrated from GET /api/projects/:pid/device-types
after the snapshot loads. Failure of that fetch is non-fatal — the
+Dev modal just shows "Custom (no type)" only.
- Delete-device cleans up its ports from state.ports too (server-side
CASCADE already handles persistence).
Slice 3 frontend.
+ IO tool (keyboard `I`):
- Single-click on canvas places a 30x30 diamond (rotated <rect>) at the
point, with the Power-cable_type colour fill (red-ish).
- Inline namer prompts for a label; empty → server defaults to "IO".
- Drop-point determines initial frame_id via the existing frameAt()
point-in-rect logic, same as devices.
Render:
- io_markers come from snap.io_markers in the snapshot loader. Each
renders as a <rect> with rotate(45) around its centre + a small text
label below the diamond. Selection halo on stroke-width.
- Drag is the same pointer-event flow as devices; on pointerup, PATCH
x,y + recompute frame_id from the new centre. Cross-frame moves
update frame_id with explicit null on the wire when leaving all frames.
- Frame-drag now also relocates contained IO markers (mirrors the
device-cascade pattern). Single PATCH per IO marker on release.
Cable-type inspector:
- Clicking a legend row now sets state.selection = {kind:"cable_type", id}
in addition to toggling activeTypeId. The inspector renders the cable
type's details (name + colour, both editable, with the
"shared across projects" banner from v3 §7), a used-by counter (0
until slice 7 ships cables), and a Delete button that surfaces the
RESTRICT in_use_by_cables count from the server.
- Debounced rename via the existing bindDebouncedRename helper.
Inspector frame view picks up an "IO" count alongside the device count.
Background click + Esc clear the selection (existing behaviour, now
covers cable_type too).
Hand-tested via the API equivalents: 3 IO markers created (free, in
frame, default-label), PATCH x,y + frame_id-to-null all work, cross-
project frame_id rejected with 400, DELETE 9999 returns 404. Snapshot
shape post-slice-3: {frames, devices, io_markers, cable_types} all
populated, ports/cables/bundles still [].
Renders the slice-2 backend on the empty canvas from slice 1.
Canvas:
- Frames render as dashed-stroke rects with top-left label, slightly
tinted fill. Devices render as solid-stroke rects with centred label
in device.color.
- Selection halo via .selected class (stroke-width bump).
- Empty-state hint disappears once any geometry exists.
Tools (left sidebar + keyboard):
- F / + Frame — rubber-band rect on the canvas. <80×60 cancels. On
release, inline foreignObject namer → POST /api/projects/:pid/frames.
- D / + Device — single click places a 100×35 device centred at the
click. Inline namer → POST devices. Drop-point determines initial
frame_id via point-in-rect against all frames (smallest bbox wins).
- Esc cancels active tool / inline namer / clears selection.
Drag (pointer events + svg getScreenCTM):
- Devices: drag updates x/y live via transform, persists via
PATCH .../devices/:id on pointerup. Also recomputes frame_id from
drop point and includes "frame_id": null|<id> if it changed.
- Frames: dragging a frame moves its contained devices visually too;
on pointerup, single PATCH for the frame + one PATCH per moved device.
Children-batch is computed at pointerdown and only sent on release —
no per-pointermove network traffic.
Inspector:
- Frame selection: name (debounced rename), x/y/w/h, device count,
Delete button (confirm prompt — devices keep existing, frame_id → NULL
via the schema's ON DELETE SET NULL).
- Device selection: name (debounced rename), colour picker
(change-event PATCH, no debounce), x/y/w/h, current frame, Delete.
- Background click clears selection.
devicePatch wire format uses tri-state frame_id: key absent = leave,
key:null = clear, key:<int> = move. Frontend uses `null` explicitly
when a device drops outside all frames.
