Have alt+tab show windows from the current monitor only (#12665)

Author: Petermhen

data/org.cinnamon.gschema.xml

@@ -431,6 +431,11 @@
       <summary>Enforce displaying the alt-tab switcher on the primary monitor instead of the active one</summary>
     </key>
 
+    <key type="b" name="alttab-switcher-show-current-monitor">
+      <default>false</default>
+      <summary>Show windows from current monitor only</summary>
+    </key>  
+
     <key type="b" name="alttab-minimized-aware">
     <default>true</default>
       <summary>Move minimized windows to the end of the appSwitcher</summary>

files/usr/share/cinnamon/cinnamon-settings/modules/cs_windows.py

@@ -179,6 +179,9 @@ def update_setting(widget, pspec):
             widget = GSettingsSwitch(_("Show windows from all workspaces"), "org.cinnamon", "alttab-switcher-show-all-workspaces")
             settings.add_row(widget)
 
+            widget = GSettingsSwitch(_("Show windows from current monitor"), "org.cinnamon", "alttab-switcher-show-current-monitor")
+            settings.add_row(widget)
+
             widget = GSettingsSwitch(_("Warp mouse pointer to the new focused window"), "org.cinnamon", "alttab-switcher-warp-mouse-pointer")
             settings.add_row(widget)
 

js/ui/appSwitcher/appSwitcher.js

@@ -64,6 +64,13 @@ function getWindowsForBinding(binding) {
 
     windows = windows.filter(Main.isInteresting);
 
+    //Switch between windows on the current monitor only
+    let showCurrentMonitorOnly = global.settings.get_boolean("alttab-switcher-show-current-monitor");
+
+    if (showCurrentMonitorOnly) {
+        windows = windows.filter(w => w.get_monitor() === global.screen.get_current_monitor())
+    }
+
     switch (binding.get_name()) {
         case 'switch-panels':
         case 'switch-panels-backward':