Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

I am using Firefox for a Kiosk application. Can I disable the context menu and zooming?

  • 2 replies
  • 2 have this problem
  • 71 views
  • Last reply by cor-el

Trevor
Trevor
more options

I am using Firefox for a Kiosk application on a large touch screen monitor. I would like to prevent users from interacting with the browser interface. Is there a way to do this? Disabling the context menu and zooming for touch gestures would prevent users from getting into a state where they are unable to use the application.

I am using Firefox for a Kiosk application on a large touch screen monitor. I would like to prevent users from interacting with the browser interface. Is there a way to do this? Disabling the context menu and zooming for touch gestures would prevent users from getting into a state where they are unable to use the application.

Chosen solution

hi TrevorTubbs, you can disable zooming in the browser with the method described at http://kb.mozillazine.org/Locking_preferences & locking those preferences: 

lockPref("toolkit.zoomManager.zoomValues"; "1");
lockPref("zoom.maxPercent"; 100);
lockPref("zoom.minPercent"; 100);

i'm not sure about disabling the context menu though...

Read this answer in context 👍 1

All Replies (2)

philipp
philipp
  • Moderator
more options

Chosen Solution

hi TrevorTubbs, you can disable zooming in the browser with the method described at http://kb.mozillazine.org/Locking_preferences & locking those preferences: 

lockPref("toolkit.zoomManager.zoomValues"; "1");
lockPref("zoom.maxPercent"; 100);
lockPref("zoom.minPercent"; 100);

i'm not sure about disabling the context menu though...

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

You can lock browser.gesture prefs to an empty string to prevent them from working.

Note that the mozilla.cfg file needs to start with a comment line (\\) 

//
lockPref("toolkit.zoomManager.zoomValues", "1");
lockPref("zoom.maxPercent", 100);
lockPref("zoom.minPercent", 100);

Use a mozilla.cfg file in the Firefox program folder to lock prefs or specify new (default) values.

Place a local-settings.js file in the defaults\pref folder where also the channel-prefs.js file is located to specify using mozilla.cfg. 

pref("general.config.filename", "mozilla.cfg");
pref("general.config.obscure_value", 0);

These functions can be used in the mozilla.cfg file: 

defaultPref();	// set new default value
pref();		// set pref, allow changes in current session
lockPref();	// lock pref, disallow changes

See also: