feat(ui): an image embed shows the image, read and edited alike - #227
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`![[__Attachments/Pasted image 20260827082446.png|500]]` rendered as a blue link to the file. The picture was one click away on the resource card, which is a different thing from a note that reads the way its author wrote it: an embed is the gesture for *put this here*, and B2 was answering with a filename. It now draws the picture — in the reading view and in the editor's live preview, from one map (`state.embedImages`, path → `data:` URL), so a note looks the same read or edited. The embed stays a link: the `<img>` becomes the anchor's label, so clicking it still opens the resource card and ⌘-click still follows it in the editor. With no picture in hand — not an image, not indexed, over a bound, or simply not read yet — it reads as its link, exactly as before. The `|`-part is a **width** on an embed, not a label (`|500`, aspect ratio kept by `height: auto`). Only a bare integer is one: Obsidian's `|500x300` and anything hand-typed draw the picture at its own size rather than at a size B2 guessed. The reading view already dropped the hint; it now uses it. Three things this needed. The grammar moved to `ui/src/embeds.ts` and is spelled once, in three anchorings — the reading view tokenizes a suffix, the loader scans a whole body, live preview matches a whole node. `imageDataUrl`, the extension→MIME table and the size bound moved with it: what an image *is* now has one answer for the resource card, the reading view and the editor. The editor's `Wikilink` parse rule claims the `!`. It ran `before: "Link"` but not before `Image`, so `![[shot.png]]` parsed as an Image wrapping a Link and no `Wikilink` node formed at all — an embed showed as raw source in the buffer while the reading view rendered it. The marker is now part of the node, so no handler reads a byte outside its own node to learn which form it has. Clicking the picture, or arrowing onto it, reveals the markup: the widget declines to swallow its events, so CodeMirror puts the caret in the replaced range and that *is* the reveal condition. The bytes are bounded before they are asked for. `inlineImagePlan` plans against the inventory B2 already holds (`list_resources` carries class and size), so no IPC is spent deciding: an unindexed target, a non-image class, a picture over the per-image bound, or one past the per-note budget simply reads as its link. The map is reconciled at the tail of `render()` — memoized on (body, inventory), so the repaint an arriving picture causes does no work — and against the live *buffer* while editing, so typing an embed loads it and deleting one drops it. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01CAz3R2RrfyGp8gcSUobNKk
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📝 WalkthroughWalkthroughThe PR adds ChangesInline image embeds
Estimated code review effort: 4 (Complex) | ~60 minutes Merge Risk: 🟡 Moderate · up to This change automatically renders image embeds, but same-note edits can temporarily restore images that were removed, table embeds can remain links while other views show pictures, and valid empty embed suffixes are ignored. Image size and type protections also rely on client-side metadata, so the PR needs owner awareness and fixes before merge. Sequence Diagram(s)sequenceDiagram
participant NoteEditor
participant MainSync
participant ResourceAPI
participant EmbedState
participant MarkdownRenderer
NoteEditor->>MainSync: edit note containing ![[image.png]]
MainSync->>EmbedState: extract and plan image targets
MainSync->>ResourceAPI: read_resource(image.png)
ResourceAPI-->>MainSync: base64 image bytes
MainSync->>EmbedState: store image data URL
EmbedState->>NoteEditor: repaint live-preview widget
EmbedState->>MarkdownRenderer: provide loaded images
MarkdownRenderer-->>EmbedState: render inline image or fallback link
Suggested reviewers: Poem
🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 81.48% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 27 functions across 9 files. (1 skipped: 1 unsupported.) ✨ Finishing Touches📝 Generate docstrings
🧪 Generate unit tests (beta)
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Inline comments:
In `@ui/src/embeds.ts`:
- Line 37: Update the shared WIKILINK grammar so the optional pipe-label group
accepts an empty label, preserving existing parsing for populated labels. Add
regression coverage for WIKILINK_EXACT and imageEmbedTargets("![[a|]]") to
verify empty-label embeds tokenize and decorate correctly.
In `@ui/src/livepreview.ts`:
- Around line 240-244: Update TableWidget rendering to pass the current
EmbedImages map to renderMarkdown, and include embed-image state in its
update/rebuild path so setEmbedImages dispatches rebuild table decorations.
Preserve existing Markdown-based rendering for non-table content.
In `@ui/src/main.ts`:
- Line 710: Update the pending image-read completion guard near the imagesOwner
check to also verify that the body revision and planned image inventory are
still current before storing loaded results. Capture the relevant imagesBody
plan or generation token when scheduling the read, and discard results from
obsolete revisions while preserving valid reads for the current owner and plan.
🪄 Autofix
Fix all unresolved CodeRabbit comments on this PR:
- Push a commit to this branch (recommended)
- Create a new PR with the fixes
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ui/src/embedlink.test.tsui/src/embeds.test.tsui/src/embeds.tsui/src/livepreview.test.tsui/src/livepreview.tsui/src/main.tsui/src/render.tsui/src/resourceview.test.tsui/src/state.tsui/style.css
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…ws its embed PR review, two of three findings. **A read the newer plan doesn't want can no longer land.** The completion guard asked only whether the pane had changed *notes*, so an edit within one note could lose the race: delete an embed while its read is in flight, the newer scan prunes a map that doesn't hold it yet, and the read then puts it back. The memo — which exists so the repaint a picture causes does no work — is what makes that stick: nothing reconciles again until the body or the inventory changes, so the entry stays, and repeated edits accumulate past the per-note budget the plan is there to enforce. A generation token replaces the owner check and subsumes it: every reconcile that gets past the memo claims the generation, and only the current one may store. Whatever a superseded read had fetched, the plan that superseded it asked for itself. **The table widget now carries the note's pictures.** It rendered with none, so an `![[image.png]]` in a *cell* stayed a link in the editor while the reading view drew it — and "read and edit must not disagree" is the whole argument of this change, table cells included. The map is the widget's second cache key: main.ts snapshots it into the field, so identity comparison rebuilds exactly when bytes land and never otherwise, and `blockField` recomputes on the same effect the ViewPlugin already watched. That ordering is why `embedImagesField` moves ahead of the live-preview compartment in the editor's extensions — a CodeMirror field may only read a field defined before it, and `blockField` now reads this one. Not taken: widening the shared grammar's `|`-part to accept `![[a|]]`. The empty label is the one designed disagreement between the parse rule and the regex (livepreview.ts, and the check that pins it): the node forms, the match fails, and the text stays raw in *both* surfaces. Accepting it would render an anchor with no label — an invisible link where the reader wrote something wrong — instead of showing them what they wrote. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01CAz3R2RrfyGp8gcSUobNKk
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![[__Attachments/Pasted image 20260827082446.png|500]]rendered as a blue linkto the file. The picture was one click away on the resource card, which is a
different thing from a note that reads the way its author wrote it: an embed is
the gesture for put this here, and B2 was answering with a filename.
It now draws the picture — in the reading view and in the editor's live preview,
from one map (
state.embedImages, path →data:URL), so a note looks the sameread or edited. The embed stays a link: the
<img>becomes the anchor's label,so clicking it still opens the resource card and ⌘-click still follows it in the
editor. With no picture in hand — not an image, not indexed, over a bound, or
simply not read yet — it reads as its link, exactly as before.
The
|-part is a width on an embed, not a label (|500, aspect ratio keptby
height: auto). Only a bare integer is one: Obsidian's|500x300andanything hand-typed draw the picture at its own size rather than at a size B2
guessed. The reading view already dropped the hint; it now uses it.
Three things this needed.
The grammar moved to
ui/src/embeds.tsand is spelled once, in three anchorings— the reading view tokenizes a suffix, the loader scans a whole body, live
preview matches a whole node.
imageDataUrl, the extension→MIME table and thesize bound moved with it: what an image is now has one answer for the resource
card, the reading view and the editor.
The editor's
Wikilinkparse rule claims the!. It ranbefore: "Link"butnot before
Image, so![[shot.png]]parsed as an Image wrapping a Link and noWikilinknode formed at all — an embed showed as raw source in the buffer whilethe reading view rendered it. The marker is now part of the node, so no handler
reads a byte outside its own node to learn which form it has. Clicking the
picture, or arrowing onto it, reveals the markup: the widget declines to swallow
its events, so CodeMirror puts the caret in the replaced range and that is the
reveal condition.
The bytes are bounded before they are asked for.
inlineImagePlanplans againstthe inventory B2 already holds (
list_resourcescarries class and size), so noIPC is spent deciding: an unindexed target, a non-image class, a picture over the
per-image bound, or one past the per-note budget simply reads as its link. The
map is reconciled at the tail of
render()— memoized on (body, inventory), sothe repaint an arriving picture causes does no work — and against the live
buffer while editing, so typing an embed loads it and deleting one drops it.
Co-Authored-By: Claude Opus 5 noreply@anthropic.com
Claude-Session: https://claude.ai/code/session_01CAz3R2RrfyGp8gcSUobNKk
Summary by CodeRabbit
New Features
![[image.png]]syntax in reading view and live preview.Tests