fix_chrome_app_desktop_file

An on-demand Google Chrome .desktop app window class updater bash script. Made by me, for me, but shared against better judgment. For now I don't maintain this and use Chromium instead, where the issue doesn't seem to occur.

This script attempts to work around an issue where KDE Plasma 5.1x (as of at least 2018-10-03) is unable to separate Google Chrome App windows from Google Chrome's general window, presumably from using the same class. A more meaningful consequence of this would be Apps not using their intended icons, and also grouping under a single Chrome window. It's a minor usability issue in the end, but it is (or was?) correctable.

Credit for the workaround is really due here: https://superuser.com/a/1068709

I suspect this only helps users running X11. It's also quite possible that this is not inherently an issue on Wayland systems, but I won't be testing this for a very long time, probably.

Requirements

1. Your system will need the xdotool package.
2. At least for now, this has been written only for Arch-based systems, but I should be able to update the script for .deb and .rpm-based distributions as well, and quite soon.
   As a workaround for other distributions (or where this is not currently working), you can modify the section involving pacman or omit the package install condition check logic altogether.

Installation and Usage

1. If necessary, set Execute permissions on the script. For example: chmod 755 fix_chrome_app_desktop_file
2. Determine which ~/.local/share/applications/chrome-\*.desktop file you need to modify.
   You can check the Name value from each of the chrome-*.desktop files to see what Chrome App it corresponds with. For instance: grep "Name=" ~/.local/share/applications/chrome-*.desktop to get a list of resulting files and their Name values.
3. Run the script with a chosen chrome-*.desktop file for its argument.
   For example, ./fix_chrome_app_desktop_file ~/.local/share/applications/chrome-pjkljhegncpnkpknbcohdijeoejaedia-Default.desktop

The script will automatically prompt the installation of xdotool, if needed.
Possible to-do: Make this work nicely for .deb and .rpm-based distributions.

Example

$ ./fix_chrome_app_desktop_file ~/.local/share/applications/chrome-pjkljhegncpnkpknbcohdijeoejaedia-Default.desktop
Checking if xdotool is installed...
xdotool is already installed - proceeding.
Modifying chrome-pjkljhegncpnkpknbcohdijeoejaedia-Default.desktop, Gmail, with class crx_pjkljhegncpnkpknbcohdijeoejaedia
Old Exec parameter: Exec=/opt/google/chrome/google-chrome --profile-directory=Default --app-id=pjkljhegncpnkpknbcohdijeoejaedia
New Exec parameter: Exec=/opt/google/chrome/google-chrome --profile-directory=Default --app-id=pjkljhegncpnkpknbcohdijeoejaedia &&xdotool search --sync --classname crx_pjkljhegncpnkpknbcohdijeoejaedia set_window --class crx_pjkljhegncpnkpknbcohdijeoejaedia
Done!