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EdgeHTML: webview.eval inconsistent during startup #127

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BenoitRanque opened this issue Jan 13, 2020 · 0 comments
Open

EdgeHTML: webview.eval inconsistent during startup #127

BenoitRanque opened this issue Jan 13, 2020 · 0 comments

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@BenoitRanque
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Executing webview.eval during startup is inconsistent, the js code may or may not run.
We are discussing this issue on tauri here. Test code below: expect 1000 <p> nodes to be added, but node 0 is not reliably inserted.

This was tested in 0.5.4 and 0.6.0. This may or may not be related to c++ async code handling here

use web_view::*;

fn main() {
    let webview = web_view::builder()
        .title("Example")
        .content(Content::Html(HTML))
        .size(800, 600)
        .resizable(true)
        .debug(true)
        .user_data(0)
        .invoke_handler(|_webview, _arg| {
            Ok(())
        })
        .build()
        .unwrap();

    let handle = webview.handle();
    for i in 0..1000 {
        handle.dispatch(move |webview| {
            webview.eval(&format!("document.body.appendChild(document.createElement('p')).appendChild(document.createTextNode('Item {}'))", i))
        }).unwrap();
    }
    webview.run().unwrap();
}

const HTML: &str = r#"
<!doctype html>
<html>
    <body>
        <h1>Hello World!</h1>
    </body>
</html>
"#;
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@BenoitRanque