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This change creates a `constellation_traits` crate. Previously messages
to the `Constellation` were in the `compositing_traits` crate, which
came about organically. This change moves these to a new crate which
also contains data types that are used in both compositing/libservo and
script (ie types that cross the process boundary). The idea is similar
to `embedding_traits`, but this is meant for types not exposed to the
API.
This change allows deduplicating `UntrustedNodeAddress`, which
previously had two versions to avoid circular dependencies.
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
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* Use 2024 style edition
Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
* Reformat all code
Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
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Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
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This method is now unused in the new Servo API.
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
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(#35196)
This change adds the second major part of the new API: delegates which
have methods called by the Servo loop. When a delegate is set on a
`WebView` or on `Servo` itself, the event loop will call into
appropriate delegate methods. Applications can implement the delegate on
their own structs to add special behavior per-`WebView` or for all
`WebView`s.
In addition, each delegate has a default implementation, which
automatically exposes "reasonable" behavior such as by-default allowing
navigation.
There's a lot more work to do here, such as refining the delegate
methods so that they all have nice interfaces, particulary with regard
to delegate methods that need an asynchronous response. This will be
handed gradually as we keep working on the API.
Signed-off-by: Delan Azabani <dazabani@igalia.com>
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Mukilan Thiyagarajan <mukilan@igalia.com>
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This patch introduces a new handle-based webview API to libservo, with
two main design goals:
1. The lifetime of the handles controls the lifetime of the webview,
giving the embedder full control over exactly when webviews are
created and destroyed. This is consistent with how WebKitGTK’s
WebView works; the engine can only create webviews via a create
request, and can only destroy them via a close request.
2. All methods are infallible; if the constellation dies, the embedder
finds out when calling Servo::handle_events.
For the moment, the embedder is only responsible for creating the
WebView id, and not the internal TopLevelBrowsingContext data
structures. This is so that the ScriptThread is able to get a handle on
the new WebView's WindowProxy in the case that it's an auxiliary
browsing context. In the future, the embedder should also be responsible
for creating the TopLevelBrowsingContext and the ScriptThread should
have mechanism to associate the two views so that WebView creation is
always executed through the same code path in the embedding layer. For
now, it's enough that the embedder can get a handle to the new WebView
when it's creation is requested.
Once we replace EmbedderMsg with a webview delegate trait, we will pass
WebView handles to the embedder, rather than webview ids. We’ll also add
detailed docs, once the design settles.
Signed-off-by: Delan Azabani <dazabani@igalia.com>
Co-authored-by: Martin Robinson <mrobinson@igalia.com>
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