We are currently returning a JSON object of the form:
{
"name": "element-6066-11e4-a52e-4f735466cecf",
"value": "foo"
}
Instead, we are expected to return an object of the form:
{
"element-6066-11e4-a52e-4f735466cecf": "foo"
}
It's difficult to know what we need to implement if we silently ignore
these endpoints. Let's log the endpoints and their parameters, and clean
up the wall of FIXME comments to be easier to grok.
Previously, some otherwise unimplemented WebDriver endpoints were
indicating that they had executed successful, this was causing a large
number of Web Platform Tests to time out when they should have failed.
The IPCs to request a page's text, layout tree, etc. are currently all
synchronous. This can result in a deadlock when WebContent also makes
a synchronous IPC call, as both ends will be waiting on each other.
This replaces the page info IPCs with a single, asynchronous IPC. This
new IPC is promise-based, much like our screenshot IPC.
If we already destroyed our timer during destruction, and then curl
tries to flush its timeouts when we tear down the multi, we can just
ignore the timer callbacks.
We were only looking at the current top-level navigable and its children
when searching for the specified window handle. We need to search *all*
known navigables if the handle belongs to a window not in the current
tree.
This is one of the few endpoints that does not ensure a top-level BC is
open. It's a bit of an implementation-defined endpoint, so let's protect
against a non-existent BC explicitly.
When we create a WebDriverConnection object, we currently hand it the
page client for which it was opened, and perform all actions on that
client. However, some WebDriver endpoints change the browsing context
(and therefore page client) on which future commands should be executed.
For example, the switch-frame endpoint will switch the current browsing
context to a frame/iframe context.
This patch implements the current browsing context (and current top-
level browsing context) concepts. They are initialized to that of the
original page. Most of this patch is making sure we execute actions on
the correct context.
We currently spin the platform event loop while awaiting scripts to
complete. This causes WebContent to hang if another component is also
spinning the event loop. The particular example that instigated this
patch was the navigable's navigation loop (which spins until the fetch
process is complete), triggered by a form submission to an iframe.
So instead of spinning, we now return immediately from the script
executors, after setting up listeners for either the script's promise to
be resolved or for a timeout. The HTTP request to WebDriver must finish
synchronously though, so now the WebDriver process spins its event loop
until WebContent signals that the script completed. This should be ok -
the WebDriver process isn't expected to be doing anything else in the
meantime.
Also, as a consequence of these changes, we now actually handle time
outs. We were previously creating the timeout timer, but not starting
it.
UI event handlers currently return a boolean where false means the event
was cancelled by a script on the page, or otherwise dropped. It has been
a point of confusion for some time now, as it's not particularly clear
what should be returned in some special cases, or how the UI process
should handle the response.
This adds an enumeration with a few states that indicate exactly how the
WebContent process handled the event. This should remove all ambiguity,
and let us properly handle these states going forward.
There should be no behavior change with this patch. It's meant to only
introduce the enum, not change any of our decisions based on the result.
Added the following Routes, IPC definitions, and boilerplates for the
missing endpoints:
- Switch To Frame
- Switch To Parent Frame
- Element Clear
- Element Send Keys
You can now build with STYLE_INVALIDATION_DEBUG and get a debug stream
of reasons why style invalidations are happening and where.
I've rewritten this code many times, so instead of throwing it away once
again, I figured we should at least have it behind a flag.
This change updates `ExecuteScript::execute_script()` and
`ExecuteScript::execute_script()` to bring their behavior in line with
each other and the current specification text.
Instances of the variable `timeout` have also been renamed to
`timeout_ms`, for clarity.
Even though the underlying time zone is already cached by LibUnicode, JS
performs additional expensive lookups with that time zone. There's no
need to do those lookups again until the system time zone has changed.
Choosing options from the `<select>` will load and display that style
sheet's source text, with some checks to make sure that the text that
just loaded is the one we currently want.
The UI is a little goofy when scrolling, as it uses `position: sticky`
which we don't implement yet. But that's just more motivation to
implement it! :^)
This will be used by the inspector, for showing style sheet contents.
Identifying a specific style sheet is a bit tricky. Depending on where
it came from, a style sheet may have a URL, it might be associated with
a DOM element, both, or neither. This varied information is wrapped in
a new StyleSheetIdentifier struct.
This creates a TimeZoneWatcher in the UI process to inform all open
WebContent processes when the time zone changes. The WebContent process
will clear its time zone cache to retrieve a fresh zone the next time
it is asked for one.
- Expose table from console object
- Add new Table log level
- Create a JS object that represents table rows and columns
- Print table as HTML using WebContentConsoleClient
When working on the Inspector's HTML, it's often kind of tricky to debug
when an element is styled / positioned incorrectly. We don't have a way
to inspect the Inspector itself.
This adds a button to the Inspector to export its HTML/CSS/JS contents
to the downloads directory. This allows for more easily testing changes,
especially by opening the exported HTML in another browser's dev tools.
We will ultimately likely remove this button (or make it hidden) by the
time we are production-ready. But it's quite useful for now.
