How to disable hotkey like ctrl+n?

[winston0410]

Is it possible to disable hotkey in chromium, like ctrl+n?

[Ahrotahn]

Keyboard shortcuts are handled in chrome/browser/ui/browser_command_controller.cc.

You would be able to disable ctrl+n by making this change:

--- a/chrome/browser/ui/browser_command_controller.cc
+++ b/chrome/browser/ui/browser_command_controller.cc
@@ -1144,7 +1144,7 @@
   IncognitoModePrefs::Availability incognito_availability =
       IncognitoModePrefs::GetAvailability(profile->GetPrefs());
   command_updater->UpdateCommandEnabled(
-      IDC_NEW_WINDOW, incognito_availability != IncognitoModePrefs::FORCED);
+      IDC_NEW_WINDOW, false);
   command_updater->UpdateCommandEnabled(
       IDC_NEW_INCOGNITO_WINDOW,
       incognito_availability != IncognitoModePrefs::DISABLED &&

[winston0410]

@Ahrotahn thank you for the reply. Are those file inside chrome/browser/ save to edit? I am not familiar with C development, are those files built or not?

Actually I would like to map it ctrl+n to ArrowDown, what is my best bet for that? Should I done that in GTK mapping?

[Ahrotahn]

Those files need to be changed before building, so this would only work when compiling your own version of chromium.

If you want the down arrow to open new windows, then you can modify the hotkeys defined in chrome/browser/ui/views/accelerator_table.cc:

--- a/chrome/browser/ui/views/accelerator_table.cc
+++ b/chrome/browser/ui/views/accelerator_table.cc
@@ -181,7 +181,7 @@
     {ui::VKEY_N, ui::EF_SHIFT_DOWN | ui::EF_PLATFORM_ACCELERATOR,
      IDC_NEW_INCOGNITO_WINDOW},
     {ui::VKEY_T, ui::EF_PLATFORM_ACCELERATOR, IDC_NEW_TAB},
-    {ui::VKEY_N, ui::EF_PLATFORM_ACCELERATOR, IDC_NEW_WINDOW},
+    {ui::VKEY_DOWN, ui::EF_NONE, IDC_NEW_WINDOW},
     {ui::VKEY_T, ui::EF_SHIFT_DOWN | ui::EF_PLATFORM_ACCELERATOR,
      IDC_RESTORE_TAB},
 

If you're trying to make the down arrow actually return ctrl+n as a key combination, then it may be better to find a method to do this in your system. Maybe a program like sxhkd, xmodmap, or xbindkeys would work if there isn't an option in your DE to set that. Those are probably better bets if you don't wish to compile your own version of chromium as well.

[winston0410]

@Ahrotahn thanks. I see, then I guess building my own version will be a better version, but where can I find chrome/browser/ui/views/accelerator_table.cc? I have searched in the repo, checked ~/.config and /etc, yet I cannot find it.

I am actually trying to make ctrl+n to act like ArrowDown and ctrl+p to act Like ArrowUp, so I can navigate the result without touching my arrow keys.

[Ahrotahn]

That file is part of the chromium source and not in the repo.

I believe you'd have an easier time setting up sxhkd. It would be able to capture the combination without letting it through to the browser, and you'd be able to modify the config as you need without having to spend hours recompiling.

There is a good writeup on Arch's wiki here. You would only need to install your distro's sxhkd package and either the xautomation or xdotool package.

To get ctrl+n to produce the same effect as pressing the down arrow your config would have something like:

control + n
    xte "keydown Down" "keyup Down"

[winston0410]

@Ahrotahn thank you for your advice. I will give sxhkd a try then, thanks!