cmd_move: add support for output current

This adds support for the following commands for i3 compatibility:
- `move [window|container] [to] output current`
- `move workspace to [output] current`
- `move workspace [to] output current`

The above commands are only useful when used with criteria.

2 files changed, 12 insertions, 3 deletions

diff --git a/sway/commands/move.c b/sway/commands/move.c
index 4dec889c..9c6e69ec 100644
--- a/sway/commands/move.c
+++ b/sway/commands/move.c
@@ -28,6 +28,15 @@ static const char expected_syntax[] =
 
 static struct sway_output *output_in_direction(const char *direction_string,
                 struct sway_output *reference, int ref_lx, int ref_ly) {
+        if (strcasecmp(direction_string, "current") == 0) {
+                struct sway_workspace *active_ws =
+                        seat_get_focused_workspace(config->handler_context.seat);
+                if (!active_ws) {
+                        return NULL;
+                }
+                return active_ws->output;
+        }
+
         struct {
                 char *name;
                 enum wlr_direction direction;
diff --git a/sway/sway.5.scd b/sway/sway.5.scd
index 9fe51c33..32631b06 100644
--- a/sway/sway.5.scd
+++ b/sway/sway.5.scd
@@ -206,7 +206,7 @@ set|plus|minus <amount>
 *move* [container|window] [to] workspace back_and_forth
         Moves the focused container to previously focused workspace.
 
-*move* [container|window] [to] output <name-or-id>
+*move* [container|window] [to] output <name-or-id>|current
         Moves the focused container to the specified output.
 
 *move* [container|window] [to] output up|right|down|left
@@ -216,10 +216,10 @@ set|plus|minus <amount>
 *move* [container|window] [to] scratchpad
         Moves the focused container to the scratchpad.
 
-*move* workspace [to] output <name-or-id>
+*move* workspace [to] output <name-or-id>|current
         Moves the focused workspace to the specified output.
 
-*move* workspace to [output] <name-or-id>
+*move* workspace to [output] <name-or-id>|current
         Moves the focused workspace to the specified output.
 
 *move* workspace [to] output up|right|down|left