With a8077f79cc Selection object is no
longer aware of selection state inside text controls (<textarea> and
<input>), so this change makes them responsible for dispatching
`selectionchange` if their selection state was changed.
Stealing the callbacks from the AnimationFrameCallbackDriver made them
no longer safe from GC. Continue to store them on the class until we
have finished their execution.
This is a mixin in the IDL, so let's treat it as a mixin in our code and
let both SVGElement and MathMLElement reuse the implementations that we
wrote for HTMLElement.
Previously, attempting to parse a floating point number with an integer
part larger than `(2 ^ 31) - 1` would cause the browser to crash. We now
avoid this by converting the integer part of the number to a `double`
rather than an `i32`.
This avoids needing to creating root handles for each heap-allocated
object captured in the animation callback. An upcoming commit would add
several of these.
This will allow us to remove the use of SafeFunction in it's
implementation. This requires a fair amount of plumbing to wire up the
GC heap to the appropriate places in order to create the timers.
This input event handling change is intended to address the following
design issues:
- Having `DOM::Position` is unnecessary complexity when `Selection`
exists because caret position could be described by the selection
object with a collapsed state. Before this change, we had to
synchronize those whenever one of them was modified, and there were
already bugs caused by that, i.e., caret position was not changed when
selection offset was modified from the JS side.
- Selection API exposes selection offset within `<textarea>` and
`<input>`, which is not supposed to happen. These objects should
manage their selection state by themselves and have selection offset
even when they are not displayed.
- `EventHandler` looks only at `DOM::Text` owned by `DOM::Position`
while doing text manipulations. It works fine for `<input>` and
`<textarea>`, but `contenteditable` needs to consider all text
descendant text nodes; i.e., if the cursor is moved outside of
`DOM::Text`, we need to look for an adjacent text node to move the
cursor there.
With this change, `EventHandler` no longer does direct manipulations on
caret position or text content, but instead delegates them to the active
`InputEventsTarget`, which could be either
`FormAssociatedTextControlElement` (for `<input>` and `<textarea>`) or
`EditingHostManager` (for `contenteditable`). The `Selection` object is
used to manage both selection and caret position for `contenteditable`,
and text control elements manage their own selection state that is not
exposed by Selection API.
This change improves text editing on Discord, as now we don't have to
refocus the `contenteditable` element after character input. The problem
was that selection manipulations from the JS side were not propagated
to `DOM::Position`.
I expect this change to make future correctness improvements for
`contenteditable` (and `designMode`) easier, as now it's decoupled from
`<input>` and `<textarea>` and separated from `EventHandler`, which is
quite a busy file.
The spec says that "isTrusted is a convenience that indicates whether
an event is dispatched by the user agent (as opposed to using
dispatchEvent())"
But when dispatching a pageshow event the flag was incorrectly set
to false.
This fixes https://wpt.fyi/results/html/syntax/parsing/the-end.html
The cols and rows attributes are limited to only positive numbers with
fallback. The cols IDL attribute's default value is 20. The rows IDL
attribute's default value is 2.
The default value was returned only for the negative number. I added an
additional check for the case when the attribute is 0 to match the
specification.
Not only does this match the spec, but otherwise when the UI process
sends us the initial visibility update, we would ignore the message as
we believed we were already visible (thus the update would not reach the
document).
1. We were not propagating selectedness updates from option to select
if the option was inside an optgroup.
2. When two or more options were selected, we were always favoring the
last one in tree order, instead of the last one that got checked.
3. We were neglecting to return in the `display size is 1` case when
all elements were disabled.
This was covered by some of the :has() selector tests. :^)
We basically need to do this for every invocation of invalidate_style()
right now, so let's just do it inside invalidate_style() itself.
Fixes one missing invalidation issue caught by a WPT test. :^)
And here's the wild part: instead of cloning WPT tests, import the
relevant WPT tests that this fixes into our own test suite.
This works by adding a small Ladybird-specific callback in
resources/testharnessreport.js (which is what that file is meant for!)
Note that these run as text tests, and so they must signal the runner
when they are done. Tests using the "usual" WPT harness should just
work, but tests that do something more freestyle will need manual
signaling if they are to be imported.
I've also increased the test timeout here from 30 to 60 seconds,
to accommodate the larger WPT-style tests.
This change also removes as much direct use of JS::Promise in LibWeb
as possible. When specs refer to `Promise<T>` they should be assumed
to be referring to the WebIDL Promise type, not the JS::Promise type.
The one exception is the HostPromiseRejectionTracker hook on the JS
VM. This facility and its associated sets and events are intended to
expose the exact opaque object handles that were rejected to author
code. This is not possible with the WebIDL Promise type, so we have
to use JS::Promise or JS::Object to hold onto the promises.
It also exposes which specs need some updates in the area of
promises. WebDriver stands out in this regard. WebAudio could use
some more cross-references to WebIDL as well to clarify things.
This change was made in the HTML spec to address a comment from the
Gecko team for the Streams API in
a20ca78975
It also opens the door for some more Promise related refactors.
Since `Storage::item_value` never returns an empty Optional,
and since `PlatformObject::is_supported_property_index` only
returns false when `item_value` returns an empty Optional,
the loop in `PlatformObject::internal_own_property_keys` will
never terminate when executed on a `Storage` instance.
This fix allows youtube.com to load successfully :^)
We can reuse the same HeapFunction when queueing up a rendering task
on the HTML event loop. No need to create extra work for the garbage
collector like this.
Our currently ad-hoc method of tracking element references is basically
a process-wide map, rather than grouping elements according to their
browsing context groups. This prevents us from recognizing when an
element reference is invalid due to its browsing context having been
closed.
This implements the WebDriver spec concept of element references grouped
according to their browsing context groups.
This patch is a bit noisy because we now need to plumb the current BC
through to the element reference AOs.
This abstraction will help us to support multiple IPC transport
mechanisms going forward. For now, we only have a TransportSocket that
implements the same behavior we previously had, using Unix Sockets for
IPC.
