Replace hacky L_FLOATING container with a list

Workspaces previously had a magical `workspace->floating` container,
which had a layout of L_FLOATING and whose children were actual floating
views. This allowed some conveniences, but was a hacky solution because
the container has to be exempt from focus, coordinate transactions with
the workspace, and omit emitting IPC events (which we didn't do).

This commit changes it to be a list directly in the sway_workspace. The
L_FLOATING layout is no longer used so this has been removed as well.

* Fixes incorrect check in the swap command (it checked if the
containers had the L_FLOATING layout, but this layout applied to the
magical container).
* Introduces workspace_add_floating

1 files changed, 4 insertions, 1 deletions

diff --git a/include/sway/tree/workspace.h b/include/sway/tree/workspace.h
index c9dbb538..35c91017 100644
--- a/include/sway/tree/workspace.h
+++ b/include/sway/tree/workspace.h
@@ -9,7 +9,7 @@ struct sway_view;
 struct sway_workspace {
         struct sway_container *swayc;
         struct sway_container *fullscreen;
-        struct sway_container *floating;
+        list_t *floating; // struct sway_container
         list_t *output_priority;
         bool urgent;
 };
@@ -63,4 +63,7 @@ struct sway_container *workspace_find_container(struct sway_container *ws,
  */
 struct sway_container *workspace_wrap_children(struct sway_container *ws);
 
+void workspace_add_floating(struct sway_container *workspace,
+                struct sway_container *con);
+
 #endif