tab_by_class

#!/bin/bash

#####################################################################
#
#    jjrh            tab_by_class
#    2018-03-21
#--------------------------------------------------------------------
#
# tabs windows based on the windows class on the current desktop
# ex: tab_by_class emacs
#
# find class with:
#            xprop | grep -i "WM_CLASS" | grep -v grep
#
#
######################################################################


DEBUG=0

if [ -z $1 ]; then
    echo "no class given"
    notify-send --expire-time=1000 -u critical "no class given" --icon=dialog-error
    exit
fi

class=$1
desktop_number=$(xprop -root | grep "_NET_CURRENT_DESKTOP(CARDINAL) =" | grep -v CUT_BUFFER | cut -f2 -d '=' | cut -f2 -d ' ')
stack_filename=/tmp/win_list-$desktop_number-$class
tmp_stack_filename=/tmp/win_list-$desktop_number-$class-tmp

read_rev=$2


# position we will move the mouse to
MOUSE_X_POS=300
MOUSE_Y_POS=300
# check if the temp files exist
if [ ! -f $stack_filename ]; then printf "" > $stack_filename; fi
if [ ! -f $tmp_stack_filename ]; then printf "" > $tmp_stack_filename; fi

# check how long it's been since we wrote the file
stack_file_modified_delta=$(expr $(date +%s) - $(date  +%s -r $stack_filename))

stack_file_length=$(cat $stack_filename | wc -l)

if [ "$DEBUG" -eq "1" ]; then
    stack_file_modified_delta="200"
fi

if [ "$stack_file_modified_delta" -gt "100" ] || [ $stack_file_length == "0" ]; then
    xdotool search --desktop $desktop_number  --class $class > $stack_filename
    touch $stack_filename
fi

function switch_to_window(){

    l=$1
    xdotool windowfocus $l
    xdotool windowraise $l
    xdotool mousemove --window $l $MOUSE_X_POS $MOUSE_Y_POS
    echo ">switched to $l" >> /tmp/tab_by_class_debug
}


function read_reverse(){
    count=0
    current_window="" # save the window we will switch to and write it at the end
    # stack_filename_rev=$stack_filename-rev
    stack_filename_rev=$stack_filename
    length=$(cat $stack_filename | wc -l)
    echo ">read_rev" >> /tmp/tab_by_class_debug
    while read l; do
        echo "#l - $l - $count" >> /tmp/tab_by_class_debug
        if [ $count == "0" ]
        then
            echo "current win: $(xdotool getactivewindow)" >> /tmp/tab_by_class_debug
            echo ">c:$count - switching" >> /tmp/tab_by_class_debug
            switch_to_window $l
            let count=count+1
            current_window=$l
        else
            echo ">c:$count" >> /tmp/tab_by_class_debug
            let count=count+1
            echo $l >> $tmp_stack_filename
        fi
    done < $stack_filename


}
function read_normal(){
    count=0
    current_window="" # save the window we will switch to and write it at the end
    while read l; do
        if [ $count == "0" ]
        then
            echo "current win: $(xdotool getactivewindow)" >> /tmp/tab_by_class_debug
            switch_to_window $l
            let count=count+1
            current_window=$l
        else
            echo $l >> $tmp_stack_filename
        fi
    done <$stack_filename
}

if [ -z "$read_rev" ]
then
    read_normal
else
    read_reverse
fi

echo $current_window >> $tmp_stack_filename
echo ">$current_window" >> /tmp/tab_by_class_debug
cat $tmp_stack_filename > $stack_filename #write the file to the end
rm $tmp_stack_filename