command/input: add map-to-output

river/InputManager.zig

@@ -138,6 +138,19 @@ pub fn inputAllowed(self: Self, wlr_surface: *wlr.Surface) bool {
         true;
 }
 
+/// Reconfigures all devices' libinput configuration as well as their output mapping.
+/// This is called on outputs being added or removed and on the input configuration being changed.
+pub fn reconfigureDevices(self: *Self) void {
+    var it = self.devices.iterator(.forward);
+    while (it.next()) |device| {
+        for (self.configs.items) |config| {
+            if (@import("globber").match(device.identifier, config.glob)) {
+                config.apply(device);
+            }
+        }
+    }
+}
+
 fn handleNewInput(listener: *wl.Listener(*wlr.InputDevice), wlr_device: *wlr.InputDevice) void {
     const self = @fieldParentPtr(Self, "new_input", listener);