Keylock indicator for Xfce panel

Question

This works as expected:

        // Return a sequence for photos
    [[[[[[RACObserve(self, event.photos) filter:^BOOL(id value) { return value != nil ; }] flattenMap:^RACStream *(NSDictionary *photos)
        {
        NSLog(@"Got photos: %@" , photos) ;
        return photos.rac_sequence.signal ;
        }]

    // Consider each photo
    filter:^BOOL(NSDictionary *photoDescriptor)
        {
        NSLog(@"Descriptor: %@" , photoDescriptor) ;
        return ((NSNumber *)photoDescriptor[@"primary"]).boolValue ;
        }]

    // Load the selected photo
    map:^id(NSDictionary *selectedPhotoDescriptor)
        {
        NSLog(@"Photo URL: %@" , selectedPhotoDescriptor[@"url"]) ;
        return [[AsyncImageFetcher imageAtURL:[NSURL URLWithString:selectedPhotoDescriptor[@"url"]] cache:YES] firstOrDefault:[UIImage imageNamed:@"detail_placeholder"]] ;
        }]

    // Deliver on main thread
    deliverOn:RACScheduler.mainThreadScheduler]

    subscribeNext:^(id x)
        {
        ((UIImageView *)self.headerView).image = x ;
        }] ;

This does not; the image is never set:

    RAC( ((UIImageView *)self.headerView), image ) =

    // Return a sequence for photos
    [[[[[RACObserve(self, event.photos) filter:^BOOL(id value) { return value != nil ; }] flattenMap:^RACStream *(NSDictionary *photos)
        {
        NSLog(@"Got photos: %@" , photos) ;
        return photos.rac_sequence.signal ;
        }]

    // Consider each photo
    filter:^BOOL(NSDictionary *photoDescriptor)
        {
        NSLog(@"Descriptor: %@" , photoDescriptor) ;
        return ((NSNumber *)photoDescriptor[@"primary"]).boolValue ;
        }]

    // Load the selected photo
    map:^id(NSDictionary *selectedPhotoDescriptor)
        {
        NSLog(@"Photo URL: %@" , selectedPhotoDescriptor[@"url"]) ;
        return [[AsyncImageFetcher imageAtURL:[NSURL URLWithString:selectedPhotoDescriptor[@"url"]] cache:YES] firstOrDefault:[UIImage imageNamed:@"detail_placeholder"]] ;
        }]

    // Deliver on main thread
    deliverOn:RACScheduler.mainThreadScheduler] ;

Why?

Solution

The keylock indicator plugin for Xfce4 "shows the state of your keyboard LEDs: Caps, Scroll and Num Lock in Xfce panel."

Installation instructions for Xfce4 keylock indicator plugin:

(Note: This works on Xfce versions 4.6 and 4.8. Xfce 4.10 uses a different version of the libxfce4ui widget library and I haven't tested this plugin with 4.10).

EDIT: Tested and it works fine till Xfce versions 4.12.

• Download the files from here.

• Move to your download directory and unpack the files by running the following command:

  • sudo tar -jxf xfce4-kbdleds-plugin-0.0.6.tar.bz2

• Next, change to the directory xfce4-kbdleds-plugin-0.0.6 and run these commands:

  ./configure --prefix=/usr
   make 
  sudo make install
  

• Finally, add the plugin to your panel.

  -- The Add New Items dialogue can be opened by right clicking on an empty space on the panel and selecting Add New Items. If you right click on a space occupied by a panel plugin, you can access Add New Items by going to Panel → Add New Items.

Source

Comments

[Glutanimate]

This thread might help you with installing this plugin.

[leftspin]

Just a note, it's likely one of the problems is that -firstOrDefault: doesn't return a signal. I took that part out, but it's still not binding. I'll post an answer if I stumble across the answer.

[leftspin]

Another problem, I'm returning a signal as a value in -map:. Looks like I'm getting my signals and values conflated.

[Eric]

The GitHub repository for this doesn't include configure, but this one does, and it works with XFCE 4.12: archive.xfce.org/src/panel-plugins/xfce4-kbdleds-plugin/0.0/‌​…

[Kevin Bowen]

@Eric Thanks for the update with a new link. At the time, I may have used autogen.sh to compile. The last update, which you linked to, for this plugin was ~8 years ago.