Add jitsi_widget.force_always_on_screen

docs/config.md

@@ -261,15 +261,20 @@ The VoIP and Jitsi options are:
       }
    }
    ```
-2. `jitsi_widget`: Optional configuration for the built-in Jitsi widget. Currently can only contain a single `skip_built_in_welcome_screen`
-   value, denoting whether the "Join Conference" button should be shown. When `true` (default `false`), Jitsi calls will skip to
-   the call instead of having a screen with a single button on it. This is most useful if the Jitsi instance being used already
-   has a landing page for users to test audio and video before joining the call, otherwise users will automatically join the call.
+2. `jitsi_widget`: Optional configuration for the built-in Jitsi widget. It supports the following `skip_built_in_welcome_screen`
+   customisations: `skip_built_in_welcome_screen` denoting whether the "Join Conference" button should be shown. 
+   When `true` (default `false`), Jitsi calls will skip to the call instead of having a screen with a single button on it. 
+   This is most useful if the Jitsi instance being used already has a landing page for users to test audio and video before 
+   joining the call, otherwise users will automatically join the call.
+   `force_always_on_screen` whether the Jitsi widget should be displayed in picture-in-picture mode even if no conference 
+   has been joined yet. This can be useful for environments that require authentication where users often click away before 
+   entering their credentials.
    For example:
    ```json
    {
       "jitsi_widget": {
-         "skip_built_in_welcome_screen": true
+         "skip_built_in_welcome_screen": true,
+         "force_always_on_screen": true
       }
    }
    ```

src/vector/jitsi/index.ts

@@ -56,6 +56,7 @@ let isVideoChannel: boolean;
 let widgetApi: WidgetApi;
 let meetApi: any; // JitsiMeetExternalAPI
 let skipOurWelcomeScreen = false;
+let forceAlwaysOnScreen = false;
 
 const ack = (ev: CustomEvent<IWidgetApiRequest>) => widgetApi.transport.reply(ev.detail, {});
 
@@ -126,8 +127,9 @@ const ack = (ev: CustomEvent<IWidgetApiRequest>) => widgetApi.transport.reply(ev
         // We've reached the point where we have to wait for the config, so do that then parse it.
         const instanceConfig = new SnakedObject<IConfigOptions>((await configPromise) ?? <IConfigOptions>{});
         const jitsiConfig = instanceConfig.get("jitsi_widget") ?? {};
-        skipOurWelcomeScreen = (new SnakedObject<IConfigOptions["jitsi_widget"]>(jitsiConfig))
-            .get("skip_built_in_welcome_screen") ?? false;
+        const jitsiWidgetConfig = (new SnakedObject<IConfigOptions["jitsi_widget"]>(jitsiConfig));
+        skipOurWelcomeScreen = jitsiWidgetConfig.get("skip_built_in_welcome_screen") ?? false;
+        forceAlwaysOnScreen = jitsiWidgetConfig.get("force_always_on_screen") ?? false;
 
         // Either reveal the prejoin screen, or skip straight to Jitsi depending on the config.
         // We don't set up the call yet though as this might lead to failure without the widget API.
@@ -432,6 +434,9 @@ function joinConference(audioDevice?: string | null, videoDevice?: string | null
 
     // Patch logs into rageshakes
     meetApi.on("log", onLog);
+    if (forceAlwaysOnScreen) {
+        widgetApi.setAlwaysOnScreen(true);
+    }
 }
 
 const onVideoConferenceJoined = () => {