Implement `floating enable`

1 files changed, 39 insertions, 4 deletions

diff --git a/sway/tree/layout.c b/sway/tree/layout.c
index 2f4ae667..7bbeb4b1 100644
--- a/sway/tree/layout.c
+++ b/sway/tree/layout.c
@@ -142,11 +142,26 @@ struct sway_container *container_remove_child(struct sway_container *child) {
         }
 
         struct sway_container *parent = child->parent;
-        for (int i = 0; i < parent->children->length; ++i) {
-                if (parent->children->items[i] == child) {
-                        list_del(parent->children, i);
-                        break;
+        if (!child->is_floating) {
+                for (int i = 0; i < parent->children->length; ++i) {
+                        if (parent->children->items[i] == child) {
+                                list_del(parent->children, i);
+                                break;
+                        }
+                }
+        } else {
+                if (!sway_assert(parent->type == C_WORKSPACE && child->type == C_VIEW,
+                                        "Found floating non-view and/or in non-workspace")) {
+                        return parent;
+                }
+                struct sway_workspace *ws = parent->sway_workspace;
+                for (int i = 0; i < ws->floating->length; ++i) {
+                        if (ws->floating->items[i] == child) {
+                                list_del(ws->floating, i);
+                                break;
+                        }
                 }
+                child->is_floating = false;
         }
         child->parent = NULL;
         container_notify_subtree_changed(parent);
@@ -154,6 +169,26 @@ struct sway_container *container_remove_child(struct sway_container *child) {
         return parent;
 }
 
+void container_add_floating(struct sway_container *workspace,
+                struct sway_container *child) {
+        if (!sway_assert(workspace->type == C_WORKSPACE && child->type == C_VIEW,
+                                "Attempted to float non-view and/or in non-workspace")) {
+                return;
+        }
+        if (!sway_assert(!child->parent,
+                                "child already has a parent (invalid call)")) {
+                return;
+        }
+        if (!sway_assert(!child->is_floating,
+                                "child is already floating (invalid state)")) {
+                return;
+        }
+        struct sway_workspace *ws = workspace->sway_workspace;
+        list_add(ws->floating, child);
+        child->parent = workspace;
+        child->is_floating = true;
+}
+
 void container_move_to(struct sway_container *container,
                 struct sway_container *destination) {
         if (container == destination