Per DOM spec, all live ranges must have their boundary offsets updated
when CharacterData content changes (insertData, deleteData, replaceData,
splitText) or when nodes are inserted/removed from the tree.
Track live ranges via an intrusive linked list on Page. After each
mutation, iterate and adjust start/end offsets per the spec algorithms.
Also fix Range.deleteContents loop that read _end_offset on each
iteration (now decremented by the range update), and Range.insertNode
that double-incremented _end_offset for non-collapsed ranges.
Route textContent, nodeValue, and data setters through replaceData
so range updates fire consistently.
Fixes 9 WPT test files (all now 100%): Range-mutations-insertData,
deleteData, replaceData, splitText, appendChild, insertBefore,
removeChild, appendData, dataChange (~1330 new passing subtests).
- Remove scale, contain-intrinsic-size, animation-range, text-box-edge
from isTwoValueShorthand: these have asymmetric or 3-value semantics
that make "X X" → "X" collapse incorrect.
- Remove line-height from isLengthProperty: bare 0 is the unitless
number multiplier, not a length (Chrome serializes as "0" not "0px").
- Fix test: background-size "cover cover" is invalid CSS, use "auto auto".
Add missing properties to isLengthProperty (0→0px) and
isTwoValueShorthand (duplicate value collapse) maps based
on WPT test failures in css/css-sizing, css/css-align,
css/css-scroll-snap, css/css-logical, and others.
New length properties: scroll-margin/padding-*, column-width,
column-rule-width, grid-column/row-gap, outline, shape-margin,
offset-distance, translate, animation-range-*, block-step-size,
text-decoration-inset, and *-rule-*-inset (CSS Gaps).
New two-value shorthands: scroll-padding-block/inline,
scroll-snap-align, background-size, border-image-repeat,
mask-repeat/size, contain-intrinsic-size, scale, text-box-edge,
animation-range, grid-gap.
Calling it here ensures that the inspector gets reset on internal page
navigation. We were seeing intermittent segfaults on a problematic WPT tests
(/encoding/legacy-mb-japanese/euc-jp/) which I believe this solves.
(The tests are still broken. Because we don't support form targets, they cause
the root page to reload in a tight cycle, causing a lot of context creation /
destruction, which I thin was the issue. This commit doesn't fix the broken test
but it hopefully fixes the crash).
Also, clear out the Inspector's default_context when the default context is
destroyed. (This was the first thing I did to try to fix the crash, it didn't
work, but I believe it's correct).
- TreeWalker.Full instead of FullExcludeSelf so querying a specific
nodeId evaluates the root element itself
- resolve href to absolute URL via URL.resolve
- isDisabled checks ancestor <fieldset disabled> with legend exemption
- parameter order: allocator before *Page per convention
Allows checking if a direct listener exists, if it doesn't, event creation can
be skipped.
I looked at a couple sites, the benefits of this is small.
Most sites don't seem to trigger that many direct dispatches and when they do,
they seem to have a listener 50-75% of the time.
- Use `checkVisibility` for more accurate element visibility detection.
- Add support for color, date, file, and month AX roles.
- Optimize XPath generation by tracking sibling indices during the walk.
- Refine interactivity detection for form elements.
Returns a structured list of all interactive elements on a page:
buttons, links, inputs, ARIA widgets, contenteditable regions, and
elements with event listeners. Includes accessible names, roles,
listener types, and key attributes.
Event listener introspection (both addEventListener and inline
handlers) is unique to LP — no other browser exposes this to
automation code.
