gistify47025.rb

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    DeviceSettingsHeaderView *headerView = [[DeviceSettingsHeaderView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, self.tableView.bounds.size.width, DEVICE_HEADER_HEIGHT)];

    [RACObserve(self, device) subscribeNext:^(MorseDevice *newDevice) {
        
        // When the battery level changes, update the string
        RACSignal *batteryChangeSignal = RACObserve(newDevice, batteryLevel);
        RAC(headerView.batteryAndWifiLabel, text) = [[batteryChangeSignal deliverOn:[RACScheduler mainThreadScheduler]] map:^id(id value) {
            
            return [NSString stringWithFormat:@"%@ %@", NSLocalizedString(@"battery is at", nil),  newDevice.batteryLevelString];
        }];

        RACSignal *connectedStateSignal = RACObserve(newDevice, connectedState);
        
        // When the connection state changes, update the font of the label
        CGFloat fontSize = headerView.batteryAndWifiLabel.font.pointSize;
        RAC(headerView.batteryAndWifiLabel, font) = [[connectedStateSignal deliverOn:[RACScheduler mainThreadScheduler]] map:^id(id value) {
            BOOL isConnected = [value integerValue] == MorseDeviceConnectedStateConnected;
            return [UIFont fontWithName:isConnected ? FONT_BREE_THIN : FONT_BREE_THIN_OBLIQUE size:fontSize];
        }];
        
        // When the connection state changes, update the label text
        RAC(headerView.batteryAndWifiLabel, text) = [[connectedStateSignal deliverOn:[RACScheduler mainThreadScheduler]] map:^id(id deviceConnectedState) {
            BOOL isConnected = [deviceConnectedState integerValue] == MorseDeviceConnectedStateConnected;
            
            NSString *batteryIsAt = [NSString stringWithFormat:@"%@ %@", NSLocalizedString(@"battery is at", nil),  newDevice.batteryLevelString];
            NSString *disconnected = NSLocalizedString(@"disconnected", nil);

            return isConnected ? batteryIsAt : disconnected;
        }];
        
        // When the connection state changes, update the label's color
        RAC(headerView.batteryAndWifiLabel, textColor) = [[connectedStateSignal deliverOn:[RACScheduler mainThreadScheduler]] map:^id(id deviceConnectedState) {
            return [deviceConnectedState integerValue] == MorseDeviceConnectedStateConnected ? [AVHexColor colorWithHex:0x666666] : [AVHexColor colorWithHex:0xF26322];
        }];
        
        RAC(headerView.contentLabel, text) = [[RACObserve(newDevice, name) deliverOn:[RACScheduler mainThreadScheduler]] map:^id(id deviceName) {
            return deviceName;
        }];
    }];

    self.tableView.tableHeaderView = headerView;

}