4 files changed, 331 insertions, 0 deletions
diff --git a/include/sway/tree/container.h b/include/sway/tree/container.h
new file mode 100644
index 00000000..16df3ee7
--- /dev/null
+++ b/include/sway/tree/container.h
@@ -0,0 +1,137 @@
+#ifndef _SWAY_CONTAINER_H
+#define _SWAY_CONTAINER_H
+#include <stdint.h>
+#include <sys/types.h>
+#include <wlr/types/wlr_box.h>
+#include <wlr/types/wlr_surface.h>
+#include "list.h"
+
+extern struct sway_container root_container;
+
+struct sway_view;
+struct sway_seat;
+
+/**
+ * Different kinds of containers.
+ *
+ * This enum is in order. A container will never be inside of a container below
+ * it on this list.
+ */
+enum sway_container_type {
+	C_ROOT,
+	C_OUTPUT,
+	C_WORKSPACE,
+	C_CONTAINER,
+	C_VIEW,
+
+	C_TYPES,
+};
+
+enum sway_container_layout {
+	L_NONE,
+	L_HORIZ,
+	L_VERT,
+	L_STACKED,
+	L_TABBED,
+	L_FLOATING,
+
+	// Keep last
+	L_LAYOUTS,
+};
+
+enum sway_container_border {
+	B_NONE,
+	B_PIXEL,
+	B_NORMAL,
+};
+
+struct sway_root;
+struct sway_output;
+struct sway_view;
+
+struct sway_container {
+	union {
+		// TODO: Encapsulate state for other node types as well like C_CONTAINER
+		struct sway_root *sway_root;
+		struct sway_output *sway_output;
+		struct sway_view *sway_view;
+	};
+
+	/**
+	 * A unique ID to identify this container. Primarily used in the
+	 * get_tree JSON output.
+	 */
+	size_t id;
+
+	char *name;
+
+	enum sway_container_type type;
+	enum sway_container_layout layout;
+	enum sway_container_layout prev_layout;
+	enum sway_container_layout workspace_layout;
+
+	// TODO convert to layout coordinates
+	double x, y;
+
+	// does not include borders or gaps.
+	double width, height;
+
+	list_t *children;
+
+	struct sway_container *parent;
+
+	list_t *marks; // list of char*
+
+	struct {
+		struct wl_signal destroy;
+	} events;
+};
+
+// TODO only one container create function and pass the type?
+struct sway_container *container_output_create(
+		struct sway_output *sway_output);
+
+struct sway_container *container_workspace_create(
+		struct sway_container *output, const char *name);
+
+struct sway_container *container_view_create(
+		struct sway_container *sibling, struct sway_view *sway_view);
+
+struct sway_container *container_output_destroy(struct sway_container *output);
+
+struct sway_container *container_view_destroy(struct sway_container *view);
+
+struct sway_container *container_set_layout(struct sway_container *container,
+		enum sway_container_layout layout);
+
+void container_descendents(struct sway_container *root,
+		enum sway_container_type type,
+		void (*func)(struct sway_container *item, void *data), void *data);
+
+/**
+ * Finds a container based on test criteria. Returns the first container that
+ * passes the test.
+ */
+struct sway_container *container_find(struct sway_container *container,
+		bool (*test)(struct sway_container *view, void *data), void *data);
+
+/**
+ * Finds a parent container with the given struct sway_containerype.
+ */
+struct sway_container *container_parent(struct sway_container *container,
+		enum sway_container_type type);
+
+/**
+ * Find a container at the given coordinates.
+ */
+struct sway_container *container_at(struct sway_container *parent,
+		double lx, double ly, struct wlr_surface **surface,
+		double *sx, double *sy);
+
+/**
+ * Apply the function for each child of the container breadth first.
+ */
+void container_for_each_descendent(struct sway_container *container,
+		void (*f)(struct sway_container *container, void *data), void *data);
+
+#endif
diff --git a/include/sway/tree/layout.h b/include/sway/tree/layout.h
new file mode 100644
index 00000000..ad52bdb0
--- /dev/null
+++ b/include/sway/tree/layout.h
@@ -0,0 +1,52 @@
+#ifndef _SWAY_LAYOUT_H
+#define _SWAY_LAYOUT_H
+
+#include <wlr/types/wlr_output_layout.h>
+#include "sway/tree/container.h"
+
+enum movement_direction {
+	MOVE_LEFT,
+	MOVE_RIGHT,
+	MOVE_UP,
+	MOVE_DOWN,
+	MOVE_PARENT,
+	MOVE_CHILD,
+	MOVE_NEXT,
+	MOVE_PREV,
+	MOVE_FIRST
+};
+
+struct sway_container;
+
+struct sway_root {
+	struct wlr_output_layout *output_layout;
+
+	struct wl_listener output_layout_change;
+
+	struct wl_list unmanaged_views; // sway_view::unmanaged_view_link
+
+	struct {
+		struct wl_signal new_container;
+	} events;
+};
+
+void layout_init(void);
+
+void container_add_child(struct sway_container *parent, struct sway_container *child);
+
+struct sway_container *container_add_sibling(struct sway_container *parent,
+		struct sway_container *child);
+
+struct sway_container *container_remove_child(struct sway_container *child);
+
+enum sway_container_layout container_get_default_layout(struct sway_container *output);
+
+void container_sort_workspaces(struct sway_container *output);
+
+void arrange_windows(struct sway_container *container,
+		double width, double height);
+
+struct sway_container *container_get_in_direction(struct sway_container
+		*container, struct sway_seat *seat, enum movement_direction dir);
+
+#endif
diff --git a/include/sway/tree/view.h b/include/sway/tree/view.h
new file mode 100644
index 00000000..e5f53f4e
--- /dev/null
+++ b/include/sway/tree/view.h
@@ -0,0 +1,116 @@
+#ifndef _SWAY_VIEW_H
+#define _SWAY_VIEW_H
+#include <wayland-server.h>
+#include <wlr/types/wlr_surface.h>
+#include <wlr/types/wlr_xdg_shell_v6.h>
+#include <wlr/xwayland.h>
+
+struct sway_container;
+struct sway_view;
+
+struct sway_xdg_surface_v6 {
+	struct sway_view *view;
+
+	struct wl_listener commit;
+	struct wl_listener request_move;
+	struct wl_listener request_resize;
+	struct wl_listener request_maximize;
+	struct wl_listener destroy;
+
+	int pending_width, pending_height;
+};
+
+struct sway_xwayland_surface {
+	struct sway_view *view;
+
+	struct wl_listener commit;
+	struct wl_listener request_move;
+	struct wl_listener request_resize;
+	struct wl_listener request_maximize;
+	struct wl_listener request_configure;
+	struct wl_listener unmap_notify;
+	struct wl_listener map_notify;
+	struct wl_listener destroy;
+
+	int pending_width, pending_height;
+};
+
+struct sway_wl_shell_surface {
+	struct sway_view *view;
+
+	struct wl_listener commit;
+	struct wl_listener request_move;
+	struct wl_listener request_resize;
+	struct wl_listener request_maximize;
+	struct wl_listener destroy;
+
+	int pending_width, pending_height;
+};
+
+enum sway_view_type {
+	SWAY_WL_SHELL_VIEW,
+	SWAY_XDG_SHELL_V6_VIEW,
+	SWAY_XWAYLAND_VIEW,
+	// Keep last
+	SWAY_VIEW_TYPES,
+};
+
+enum sway_view_prop {
+	VIEW_PROP_TITLE,
+	VIEW_PROP_APP_ID,
+	VIEW_PROP_CLASS,
+	VIEW_PROP_INSTANCE,
+};
+
+struct sway_view {
+	enum sway_view_type type;
+	struct sway_container *swayc;
+	struct wlr_surface *surface;
+	int width, height;
+
+	union {
+		struct wlr_xdg_surface_v6 *wlr_xdg_surface_v6;
+		struct wlr_xwayland_surface *wlr_xwayland_surface;
+		struct wlr_wl_shell_surface *wlr_wl_shell_surface;
+	};
+
+	union {
+		struct sway_xdg_surface_v6 *sway_xdg_surface_v6;
+		struct sway_xwayland_surface *sway_xwayland_surface;
+		struct sway_wl_shell_surface *sway_wl_shell_surface;
+	};
+
+	struct {
+		const char *(*get_prop)(struct sway_view *view,
+				enum sway_view_prop prop);
+		void (*set_size)(struct sway_view *view,
+				int width, int height);
+		void (*set_position)(struct sway_view *view,
+				double ox, double oy);
+		void (*set_activated)(struct sway_view *view, bool activated);
+		void (*close)(struct sway_view *view);
+	} iface;
+
+	// only used for unmanaged views (shell specific)
+	struct wl_list unmanaged_view_link; // sway_root::unmanaged views
+};
+
+const char *view_get_title(struct sway_view *view);
+
+const char *view_get_app_id(struct sway_view *view);
+
+const char *view_get_class(struct sway_view *view);
+
+const char *view_get_instance(struct sway_view *view);
+
+void view_set_size(struct sway_view *view, int width, int height);
+
+void view_set_position(struct sway_view *view, double ox, double oy);
+
+void view_set_activated(struct sway_view *view, bool activated);
+
+void view_close(struct sway_view *view);
+
+void view_update_outputs(struct sway_view *view, const struct wlr_box *before);
+
+#endif
diff --git a/include/sway/tree/workspace.h b/include/sway/tree/workspace.h
new file mode 100644
index 00000000..d73b29c1
--- /dev/null
+++ b/include/sway/tree/workspace.h
@@ -0,0 +1,26 @@
+#ifndef _SWAY_WORKSPACE_H
+#define _SWAY_WORKSPACE_H
+
+#include "sway/tree/container.h"
+
+extern char *prev_workspace_name;
+
+char *workspace_next_name(const char *output_name);
+
+struct sway_container *workspace_create(const char *name);
+
+bool workspace_switch(struct sway_container *workspace);
+
+struct sway_container *workspace_by_number(const char* name);
+
+struct sway_container *workspace_by_name(const char*);
+
+struct sway_container *workspace_output_next(struct sway_container *current);
+
+struct sway_container *workspace_next(struct sway_container *current);
+
+struct sway_container *workspace_output_prev(struct sway_container *current);
+
+struct sway_container *workspace_prev(struct sway_container *current);
+
+#endif