1 files changed, 74 insertions, 0 deletions

diff --git a/include/sway/tree/node.h b/include/sway/tree/node.h
new file mode 100644
index 00000000..5b8c1909
--- /dev/null
+++ b/include/sway/tree/node.h
@@ -0,0 +1,74 @@
+#ifndef _SWAY_NODE_H
+#define _SWAY_NODE_H
+#include <stdbool.h>
+#include "list.h"
+
+struct sway_root;
+struct sway_output;
+struct sway_workspace;
+struct sway_container;
+struct sway_transaction_instruction;
+struct wlr_box;
+
+enum sway_node_type {
+        N_ROOT,
+        N_OUTPUT,
+        N_WORKSPACE,
+        N_CONTAINER,
+};
+
+struct sway_node {
+        enum sway_node_type type;
+        union {
+                struct sway_root *sway_root;
+                struct sway_output *sway_output;
+                struct sway_workspace *sway_workspace;
+                struct sway_container *sway_container;
+        };
+
+        /**
+         * A unique ID to identify this node.
+         * Primarily used in the get_tree JSON output.
+         */
+        size_t id;
+
+        struct sway_transaction_instruction *instruction;
+        size_t ntxnrefs;
+        bool destroying;
+
+        // If true, indicates that the container has pending state that differs from
+        // the current.
+        bool dirty;
+
+        struct {
+                struct wl_signal destroy;
+        } events;
+};
+
+void node_init(struct sway_node *node, enum sway_node_type type, void *thing);
+
+const char *node_type_to_str(enum sway_node_type type);
+
+/**
+ * Mark a node as dirty if it isn't already. Dirty nodes will be included in the
+ * next transaction then unmarked as dirty.
+ */
+void node_set_dirty(struct sway_node *node);
+
+bool node_is_view(struct sway_node *node);
+
+char *node_get_name(struct sway_node *node);
+
+void node_get_box(struct sway_node *node, struct wlr_box *box);
+
+struct sway_output *node_get_output(struct sway_node *node);
+
+enum sway_container_layout node_get_layout(struct sway_node *node);
+
+struct sway_node *node_get_parent(struct sway_node *node);
+
+list_t *node_get_children(struct sway_node *node);
+
+bool node_has_ancestor(struct sway_node *node, struct sway_node *ancestor);
+
+#endif