How to kill the keyboard in Firefox OS Simulator

I want to run some Firefox OS apps in my PC. So I'm using a big-sized Firefox OS Simulator.

The problem is that the keyboard grows huge and covers too much space:

Since this is in fact running on my PC, I use the physical keyboard instead of the Firefox OS one.

So I don't want this keyboard. Is there a way to remove it?

1. Open the profile folder of Firefox:
   1. Go to about:support
   2. Find the "Application Basics" section
   3. Find the "Profile Folder" entry in the table
   4. Click the "Show Folder" button
2. Go to the extensions subfolder
3. Find the folder of your simulator, e.g. [email protected]
4. Go to b2g subfolder
5. Go to modules subfolder
6. Open the Keyboard.jsm with a text editor.

7. Find the _messageNames array initializer:

   _messageNames: [
     'RemoveFocus',
     'SetSelectionRange', 'ReplaceSurroundingText', 'ShowInputMethodPicker',
     'SwitchToNextInputMethod', 'HideInputMethod',
     'GetText', 'SendKey', 'GetContext',
     'SetComposition', 'EndComposition',
     'Register', 'Unregister'
   ],
   

8. Comment 'Register':

   _messageNames: [
     'RemoveFocus',
     'SetSelectionRange', 'ReplaceSurroundingText', 'ShowInputMethodPicker',
     'SwitchToNextInputMethod', 'HideInputMethod',
     'GetText', 'SendKey', 'GetContext',
     'SetComposition', 'EndComposition',
     /*'Register',*/ 'Unregister'
   ],
   

9. Restart the Simulator (no need to restart Firefox)

Now focusing a text field won't open the keyboard, but you will be able to write with the physical one. Focusing a select will still display a dialog to choose some option.

If you want to disable the keyboard completely (including select), instead of 'Register' scroll to the end of the file and comment this line:

this.Keyboard.init();