Browser Chooser for GNOME

browser_chooser.desktop

[Desktop Entry]
Categories=GNOME;GTK;Network;WebBrowser;
Comment=Browser picker
Exec=$HOME/.bin/browser_chooser %U
GenericName=Web Browser
Icon=firefox
Keywords=Internet;WWW;Browser;Web;Explorer
Name=Browser Chooser
Type=Application
Version=1.0
MimeType=x-scheme-handler/unknown;x-scheme-handler/about;text/html;text/xml;application/xhtml+xml;application/xml;application/rss+xml;application/rdf+xml;image/gif;image/jpeg;image/png;x-scheme-handler/http;x-scheme-handler/https;x-scheme-handler/ftp;x-scheme-handler/chrome;video/webm;application/x-xpinstall;

browser_chooser.sh

#!/bin/bash

# Browser chooser for GNOME
# Takes over as the default browser and prompts for where to open URLs

# Requires rofi & papirus-icon-theme
#   sudo apt install rofi papirus-icon-theme

# Save this file as:
#   $HOME/.bin/browser_chooser

# Create a desktop entry here:
#   touch $HOME/.local/share/applications/browser_chooser.desktop

# With the contents:
#   [Desktop Entry]
#   Categories=GNOME;GTK;Network;WebBrowser;
#   Comment=Browser picker
#   Exec=$HOME/.bin/browser_chooser %U
#   GenericName=Web Browser
#   Icon=firefox
#   Keywords=Internet;WWW;Browser;Web;Explorer
#   Name=Browser Chooser
#   Type=Application
#   Version=1.0
#   MimeType=x-scheme-handler/unknown;x-scheme-handler/about;text/html;text/xml;application/xhtml+xml;application/xml;application/rss+xml;application/rdf+xml;image/gif;image/jpeg;image/png;x-scheme-handler/http;x-scheme-handler/https;x-scheme-handler/ftp;x-scheme-handler/chrome;video/webm;application/x-xpinstall;

# Set permissions
#   chmod +x $HOME/.local/share/applications/browser_chooser.desktop

# Activate with:
#   xdg-settings set default-web-browser browser_chooser.desktop

# Change themes with:
#   rofi-theme-selector

browsers="Firefox\0icon\x1ffirefox,Chromium\0icon\x1fchromium"
browser_count=$(($(echo "$browsers" | tr -cd ',' | wc -c)+1))

browser_choice=$(
    echo -en "$browsers" | \
    rofi -dmenu -i -sep ',' -format i  -width 10 \
        -lines $browser_count -line-margin 0 -line-padding 1 \
        -font "hack 32" -hide-scrollbar \
        -icon-theme "Papirus" -show-icons
)

[[ "${browser_choice}" == "0" ]] && chosen_browser="firefox"
[[ "${browser_choice}" == "1" ]] && chosen_browser="chromium"

# chosen_browser=$(
#     case $browser_choice in
#         0)
#             echo -n "firefox"
#             ;;
#         1)
#             echo -n "chromium"
#             ;;
#     esac
# )

if [ -n "$chosen_browser" ]; then
    $chosen_browser $1
fi