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libservo: Allow embedders to execute JavaScript scripts via the API (#35720)

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This change adds a new `WebView` API `evaluate_javascript()`, which
allows embedders to
execute JavaScript code and wait for a reply asynchronously. Ongoing
script execution is
tracked by a libservo `JavaScriptEvaluator` struct, which maps an id to
the callback passed
to the `evaluate_javascript()` method. The id is used to track the
script and its execution
through the other parts of Servo.

Testing: This changes includes `WebView` unit tests.

---------

Signed-off-by: Narfinger <Narfinger@users.noreply.github.com>
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Martin Robinson <mrobinson@igalia.com>
This commit is contained in:
Narfinger 2025-05-13 14:54:18 +02:00 • committed by GitHub
parent 91c4c7b998
commit 991be359a3
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12 changed files with 391 additions and 18 deletions
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5
components/constellation/tracing.rs
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@ -77,6 +77,7 @@ mod from_compositor {
Self::SetWebViewThrottled(_, _) => target!("SetWebViewThrottled"),
Self::SetScrollStates(..) => target!("SetScrollStates"),
Self::PaintMetric(..) => target!("PaintMetric"),
Self::EvaluateJavaScript(..) => target!("EvaluateJavaScript"),
}
}
}
@ -176,6 +177,7 @@ mod from_script {
Self::TitleChanged(..) => target!("TitleChanged"),
Self::IFrameSizes(..) => target!("IFrameSizes"),
Self::ReportMemory(..) => target!("ReportMemory"),
Self::FinishJavaScriptEvaluation(..) => target!("FinishJavaScriptEvaluation"),
}
}
}
@ -238,6 +240,9 @@ mod from_script {
Self::ShutdownComplete => target_variant!("ShutdownComplete"),
Self::ShowNotification(..) => target_variant!("ShowNotification"),
Self::ShowSelectElementMenu(..) => target_variant!("ShowSelectElementMenu"),
Self::FinishJavaScriptEvaluation(..) => {
target_variant!("FinishJavaScriptEvaluation")
},
}
}
}