O Openbox (gerenciador de janelas do LXDE) não tem uma funcionalidade embutida para isso, mas com uma pequena ajuda de xdotool podemos escrever um script que possa replicar e até melhorar o comportamento da Unity.
Primeiro, verifique se você instalou o xdotool:
sudo apt-get install xdotool
Salve o seguinte script como focus_or_launch e torne-o executável:
#!/bin/bash
# NAME: focus_or_launch
# VERSION: 0.4
# AUTHOR: (c) 2014 Glutanimate <https://github.com/Glutanimate/>
#
# DESCRIPTION: Focus existing app window or launch application if no
# window found
#
# Simplified version of a script by Henning Bekel
# (https://bbs.archlinux.org/viewtopic.php?pid=625009#p625009)
#
# DEPENDENCIES: xdotool
#
# LICENSE: GNU GPLv3 (http://www.gnu.de/documents/gpl-3.0.en.html)
#
# NOTICE: THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
# EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
# PROVIDE THE PROGRAM “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR
# IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
# AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND
# PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE,
# YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
#
# IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY
# COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM AS
# PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL,
# INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE
# THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED
# INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE
# PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER
# PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
#
# USAGE: focus_or_launch <command>
# EXAMPLE: focus_or_launch google-chrome
############# GLOBVAR/PREP ###############
Executable="$1"
ExecutableBase="$(basename "$Executable")"
Usage="\
Usage: $(basename $0) command
E.g.: $(basename $0) google-chrome\
"
############## USGCHECKS #################
if [[ $# -ne 1 || "$1" =~ ^(-h|--help)$ ]]; then
echo "$Usage"
exit 1
fi
################ MAIN ####################
MostRecentWID="$(xdotool search --class --name "$ExecutableBase" | tail -1 2> /dev/null)"
if [[ -z "$MostRecentWID" ]]; then
echo "$ExecutableBase not found. Launching new window."
"$Executable" > /dev/null 2>&1 &
disown
else
echo "Focusing existing instance of $ExecutableBase."
# use brute-force approach if activating most recent WID doesn't work
xdotool windowactivate "$MostRecentWID" 2>&1 | grep failed \
&& xdotool search --class --name "$ExecutableBase" windowactivate %@
fi
Veja como o script funciona: Quando você executar focus_or_launch application xdotool, procurará instâncias existentes do aplicativo e focalizará uma delas. Se nenhuma instância for encontrada, o script iniciará uma nova.
Para integrar esse script à sessão da área de trabalho, edite o arquivo de configuração de caixa aberta (por exemplo, ~/.config/openbox/lxde-rc.xml , ../lubuntu-rc.xml ou ../rc.xml ) e adicione uma seção semelhante à seguinte para cada aplicativo que você deseja controlar:
<keybind key="W-g">
<action name="Execute">
<command>focus_or_launch gedit</command>
</action>
</keybind>
Certifique-se de substituir focus_or_launch pelo caminho do script em seu sistema ou, como alternativa, copie o script para seu $PATH .
Se você não quiser que o script inicie uma nova instância do aplicativo, basta remover a seguinte seção:
"$Executable" > /dev/null 2>&1 &
disown
P.S .: Esse script deve funcionar em todos os ambientes de área de trabalho compatíveis com xdotool (por exemplo, Unity, GNOME, XFCE ...)