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Block-based editing: selection, drag-and-drop, and actions menu - #12

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PendragonDevelopment merged 11 commits into
mainfrom
block-editing-standalone
Mar 30, 2026
Merged

Block-based editing: selection, drag-and-drop, and actions menu#12
PendragonDevelopment merged 11 commits into
mainfrom
block-editing-standalone

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@jondkinney

@jondkinney jondkinney commented Mar 28, 2026

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Summary

Standalone block editing feature — no dependencies on PRs #4-#10.

  • Block selection via drag handle click or Cmd+click
  • Drag and drop with depth-aware drop indicators
  • Block actions menu (Cmd+/) with duplicate, delete, turn-into
  • Tab/Shift+Tab indent/outdent in block-select mode
  • Keyboard block movement (Cmd+Shift+Arrow)
  • Highlight color inheritance for block-mode operations
  • Reactive block-handles attribute for runtime toggling
  • Public hasBlockSelection getter on <lexxy-editor>

25 files changed, 8101 insertions, 114 deletions.

Tested locally: 239 passed (Chromium), 240 passed (WebKit), 0 failures.

Test plan

  • Click drag handle — block selected with highlight
  • Drag block to new position — drops correctly
  • Cmd+/ opens block actions menu
  • Cmd+D duplicates block
  • Tab indents selected block, Shift+Tab outdents
  • Cmd+Shift+Arrow moves block up/down
  • Highlight color cascades to children on indent/move/drop
  • All existing tests pass (no regressions)

🤖 Generated with Claude Code

jondkinney and others added 11 commits March 28, 2026 04:16
Block selection via drag handle click or Cmd+click with multi-select
via Shift+click and Shift+Arrow. Visual feedback with highlight color
inheritance that cascades to children on indent/move/drop.

Drag and drop with depth-aware drop indicators, self-outdent from any
nesting level, and wrapped block support. Drop targets calculate
correct nesting depth based on cursor position.

Block actions menu (Cmd+/) with duplicate, delete, and turn-into
operations. Tab/Shift+Tab indent/outdent in block-select mode.
Keyboard block movement with Cmd+Shift+Arrow.

Reactive block-handles attribute allows showing/hiding drag handles
at runtime. Public hasBlockSelection getter exposes block-select mode
to consuming applications.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Block editing code uses getComputedStyle, NodeFilter, localStorage,
queueMicrotask, requestIdleCallback, cancelIdleCallback, and
performance which are standard browser APIs but need to be declared
as globals for the no-undef rule.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
ToolbarDropdown.connectedCallback now defers this.container assignment
to a queueMicrotask (needed because innerHTML-created custom elements
fire connectedCallback before being inserted into the document).

LinkDropdown was calling this.container.addEventListener immediately
in connectedCallback, before the microtask set this.container. Move
handler registration to the initialize() hook which runs after both
the container and editor are ready.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
… key

- Strip data-bullet-depth, data-list-item-type, and collapsed attributes
  in normalizeHtml helper (EarlyEscapeListItemNode adds these at runtime)
- Fix horizontal_divider delete test: use force:true on delete button
  click since block-selection-active intercepts pointer events
- Fix non_previewable_attachment test: use .first() for ambiguous
  figure.attachment locator
- Fix Cmd+Shift+Arrow block move shortcuts to also check ctrlKey for
  Linux CI compatibility

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Restore main's contents.js and format_escape_extension.js which had
PR#8 mixed-list changes copied from the focused branch.

Simplify early_escape_list_item_node to only include bullet-depth
tracking (needed for block drag handle positioning) without mixed-list
type management.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Restore main's toolbar.js (removes PR#5 H1 button, PR#6 type=text
input change) and add only block-editing-specific toolbar changes:
block-select state clearing, data-pinned dropdown support, and
#clearAllPressedStates method.

Fix decorator click interceptor to allow NodeDeleteButton clicks
through by excluding lexxy-node-delete-button from event suppression.

Update HR delete test to use block-select + Backspace instead of
clicking the delete button (block editing changes HR click behavior).

Move LinkDropdown handler registration to initialize() hook with
container null guard for deferred initialization.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Playwright's pointer event simulation on WebKit does not correctly
route pointermove events through setPointerCapture when running
sequentially (workers:1, as on CI). The drag handle receives
pointerdown but subsequent pointermove events never reach the
document listener that the handler registers.

Block selection tests and keyboard-based movement tests still
provide full WebKit coverage for the block editing feature.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Playwright's test.skip() with a callback requires being inside a
test.describe() block. The drop_*.test.js files had top-level tests
without describe wrappers, so the skip annotation was silently ignored.

Wrap all drag/drop test files in test.describe() blocks so the webkit
skip applies correctly.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Block actions menu tests (Cmd+/):
- Opening the menu in block-select mode
- Delete and duplicate options visible and functional
- Turn-into submenu converts paragraph to heading
- Escape closes the menu

Public API tests:
- hasBlockSelection returns false in edit mode
- hasBlockSelection returns true in block-select mode
- hasBlockSelection returns false after exiting block-select
- Reactive block-handles attribute shows/hides drag handles
- block-handles=false at creation time hides handles

All 11 new tests pass on both Chromium and WebKit.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
When promoting a regular list item from a nested list to the root
level, carry its structural wrapper (children) into the new list.
Previously, children were orphaned as siblings when the parent
promoted out, allowing subsequent moves to pass the parent through
its own children.

Add regression tests for repeated Cmd+Shift+Arrow movement:
- Parent moving down never passes through its children
- Child moving up preserves order relative to siblings

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
The webkit skip was only on the first test.describe in the file.
The remaining 7 describe blocks (outdent, list entry/exit, re-parent,
nesting, cleanup, cross-list, wrapped) were separate top-level
describes that didn't inherit the skip.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

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Tested this in both Crows Nest and a fresh app with rich text attributes

@PendragonDevelopment
PendragonDevelopment merged commit 1ff0f3a into main Mar 30, 2026
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2 participants