Initial (awful) pass on xdg shell support

include/sway/view.h

@@ -0,0 +1,56 @@
+#ifndef _SWAY_VIEW_H
+#define _SWAY_VIEW_H
+#include <wayland-server.h>
+#include <wlr/types/wlr_xdg_shell_v6.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;
+};
+
+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_CLASS,
+	VIEW_PROP_INSTANCE,
+	VIEW_PROP_APP_ID,
+};
+
+/**
+ * sway_view is a state container for surfaces that are arranged in the sway
+ * tree (shell surfaces).
+ */
+struct sway_view {
+	struct wl_listener destroy;
+	enum sway_view_type type;
+	struct sway_container *swayc;
+
+	union {
+		struct wlr_xdg_surface_v6 *wlr_xdg_surface_v6;
+	};
+
+	union {
+		struct sway_xdg_surface_v6 *sway_xdg_surface_v6;
+	};
+
+	struct {
+		const char *(*get_prop)(struct sway_view *view,
+				enum sway_view_prop prop);
+	} iface;
+};
+
+#endif