lemonbar: Implement callbacks for host specific stuff

.i3/lemonbar/i3_lemonbar_common.py

@@ -21,6 +21,8 @@ class bar_mode(Enum):
 
 mode = bar_mode.normal
 
+screen_args = ['screen', '-D', '-R', '-U' '-S' 'lemonbar']
+
 floatterm_args = lambda prog : ['terminator', '-r', 'FLOAT_TERM', '-p'
         , 'dark', '-e', 'echo kill_unfocus $$ > {}; exec {}'.format(
             config.fifo_file_executor, prog)]
@@ -97,3 +99,57 @@ commands_dict = {'toggle_secs': toggle_secs
                 ,'bluetooth': bluetooth
                 }
 
+# Callbacks for workspaces
+def add_callbacks(i3ws):
+    i3ws.change_callbacks.append(set_bg)
+    i3ws.focus_callbacks.append(set_keymap)
+    i3ws.focus_callbacks.append(kill_floating_windows)
+
+def img_path(num):
+    dir = '/home/kuba/Obrazy/Wallpapers/'
+    return dir + {
+        1: '1_main',
+        2: '2_web',
+        3: '3_music',
+        4: '4_work',
+        5: '5_terms',
+        6: '6_stats',
+        7: '7',
+        8: '8',
+        9: '9',
+    }.get(int(num), 'default')
+
+def set_bg(i3ws):
+    cmd_args = ['sh', '/home/kuba/scripts/set_bg.sh']
+    for output in i3ws.outputs:
+        if output.active:
+            bg = img_path(output.current_workspace.partition(' ')[0])
+            cmd_args.append(bg)
+    subprocess.call(cmd_args)
+
+def kill_floating_windows(i3ws):
+    global kill_on_unfocus, logger
+    role   = i3ws.focused_window.window_role
+    wclass = i3ws.focused_window.window_class
+
+    if role != 'FLOAT_TERM' and wclass != 'FLOAT_PAVU' and wclass != 'YADWINBR':
+        # Is there a window that the bar has opened?
+        for pid in kill_on_unfocus:
+            try:
+                os.kill(pid, signal.SIGTERM)
+            except ProcessLookupError:
+                logger.debug('Tried killing process {} but it doesn\'t exist'.format(pid))
+        kill_on_unfocus = []
+
+def set_keymap(i3ws):
+    global cur_class, keymaps, logger
+    wclass = i3ws.focused_window.window_class
+    cur_class = wclass
+
+    if wclass in keymaps:
+        new_km = keymaps[wclass]
+        logger.debug('Setting {} as keymap for {}'.format(new_km, wclass))
+    else:
+        new_km = def_keymap
+        logger.debug('Setting default keymap {} for {}'.format(def_keymap, wclass))
+    subprocess.call(['/home/kuba/.i3/scripts/lang.sh', 'qset', new_km])