File path on server

Support
2

Hello!

It is not required to get File and StreamResource to set resource from META-INF/resource.

For instance, if your HTM is placed under META-INF/resource/hpgames/crossword/1/index.htm, so you should set:

@ViewComponent
private IFrame iframe;

@Subscribe
public void onInit(final InitEvent event) {
    iframe.setSrc("hpgames/crossword/1/index.htm");
}

XML example:

<iframe id="iframe" width="300px" height="200px" resource="hpgames/crossword/1/index.htm"/>

Take a look at How to load resources dynamically in Vaadin.

Also, note that to show HTM/HTML files in IFrame you should configure security (see X-Frame-Options - #11 by d.kremnev):

@EnableWebSecurity
public static class DefaultFlowuiSecurityConfiguration extends FlowuiSecurityConfiguration {
    @Override
    protected void configure(HttpSecurity http) throws Exception {
        super.configure(http);
        http.headers(headers ->
                headers.contentSecurityPolicy(secPolicy ->
                        secPolicy.policyDirectives("frame-ancestors localhost:8080")
                )
        );
    }
}