Merge pull request #1568 from emersion/rootston-refactor

Refactor rootston views

10 files changed, 1010 insertions, 960 deletions

diff --git a/rootston/bindings.c b/rootston/bindings.c
index 057c17e9..9dc2223e 100644
--- a/rootston/bindings.c
+++ b/rootston/bindings.c
@@ -4,6 +4,7 @@
 #include <sys/wait.h>
 #include <wlr/util/log.h>
 #include "rootston/bindings.h"
+#include "rootston/view.h"
 
 static bool outputs_enabled = true;
 
@@ -83,8 +84,10 @@ void execute_binding_command(struct roots_seat *seat,
 	} else if (strcmp(command, "toggle_decoration_mode") == 0) {
 		struct roots_view *focus = roots_seat_get_focus(seat);
 		if (focus != NULL && focus->type == ROOTS_XDG_SHELL_VIEW) {
+			struct roots_xdg_surface *xdg_surface =
+				roots_xdg_surface_from_view(focus);
 			struct roots_xdg_toplevel_decoration *decoration =
-				focus->roots_xdg_surface->xdg_toplevel_decoration;
+				xdg_surface->xdg_toplevel_decoration;
 			if (decoration != NULL) {
 				enum wlr_xdg_toplevel_decoration_v1_mode mode =
 					decoration->wlr_decoration->current_mode;
diff --git a/rootston/desktop.c b/rootston/desktop.c
index 63ff1382..147cc084 100644
--- a/rootston/desktop.c
+++ b/rootston/desktop.c
@@ -36,663 +36,14 @@
 #include "rootston/xcursor.h"
 #include "wlr-layer-shell-unstable-v1-protocol.h"
 
-struct roots_view *view_create(struct roots_desktop *desktop) {
-	struct roots_view *view = calloc(1, sizeof(struct roots_view));
-	if (!view) {
-		return NULL;
-	}
-	view->desktop = desktop;
-	view->alpha = 1.0f;
-	wl_signal_init(&view->events.unmap);
-	wl_signal_init(&view->events.destroy);
-	wl_list_init(&view->children);
-	return view;
-}
-
-void view_get_box(const struct roots_view *view, struct wlr_box *box) {
-	box->x = view->box.x;
-	box->y = view->box.y;
-	box->width = view->box.width;
-	box->height = view->box.height;
-}
-
-void view_get_deco_box(const struct roots_view *view, struct wlr_box *box) {
-	view_get_box(view, box);
-	if (!view->decorated) {
-		return;
-	}
-
-	box->x -= view->border_width;
-	box->y -= (view->border_width + view->titlebar_height);
-	box->width += view->border_width * 2;
-	box->height += (view->border_width * 2 + view->titlebar_height);
-}
-
-enum roots_deco_part view_get_deco_part(struct roots_view *view, double sx,
-		double sy) {
-	if (!view->decorated) {
-		return ROOTS_DECO_PART_NONE;
-	}
-
-	int sw = view->wlr_surface->current.width;
-	int sh = view->wlr_surface->current.height;
-	int bw = view->border_width;
-	int titlebar_h = view->titlebar_height;
-
-	if (sx > 0 && sx < sw && sy < 0 && sy > -view->titlebar_height) {
-		return ROOTS_DECO_PART_TITLEBAR;
-	}
-
-	enum roots_deco_part parts = 0;
-	if (sy >= -(titlebar_h + bw) &&
-			sy <= sh + bw) {
-		if (sx < 0 && sx > -bw) {
-			parts |= ROOTS_DECO_PART_LEFT_BORDER;
-		} else if (sx > sw && sx < sw + bw) {
-			parts |= ROOTS_DECO_PART_RIGHT_BORDER;
-		}
-	}
-
-	if (sx >= -bw && sx <= sw + bw) {
-		if (sy > sh && sy <= sh + bw) {
-			parts |= ROOTS_DECO_PART_BOTTOM_BORDER;
-		} else if (sy >= -(titlebar_h + bw) && sy < 0) {
-			parts |= ROOTS_DECO_PART_TOP_BORDER;
-		}
-	}
-
-	// TODO corners
-
-	return parts;
-}
-
-static void view_update_output(const struct roots_view *view,
-		const struct wlr_box *before) {
-	struct roots_desktop *desktop = view->desktop;
-
-	if (view->wlr_surface == NULL) {
-		return;
-	}
-
-	struct wlr_box box;
-	view_get_box(view, &box);
-
-	struct roots_output *output;
-	wl_list_for_each(output, &desktop->outputs, link) {
-		bool intersected = before != NULL && wlr_output_layout_intersects(
-			desktop->layout, output->wlr_output, before);
-		bool intersects = wlr_output_layout_intersects(desktop->layout,
-			output->wlr_output, &box);
-		if (intersected && !intersects) {
-			wlr_surface_send_leave(view->wlr_surface, output->wlr_output);
-			if (view->toplevel_handle) {
-				wlr_foreign_toplevel_handle_v1_output_leave(
-					view->toplevel_handle, output->wlr_output);
-			}
-		}
-		if (!intersected && intersects) {
-			wlr_surface_send_enter(view->wlr_surface, output->wlr_output);
-			if (view->toplevel_handle) {
-				wlr_foreign_toplevel_handle_v1_output_enter(
-					view->toplevel_handle, output->wlr_output);
-			}
-		}
-	}
-}
-
-void view_move(struct roots_view *view, double x, double y) {
-	if (view->box.x == x && view->box.y == y) {
-		return;
-	}
-
-	struct wlr_box before;
-	view_get_box(view, &before);
-	if (view->move) {
-		view->move(view, x, y);
-	} else {
-		view_update_position(view, x, y);
-	}
-	view_update_output(view, &before);
-}
-
-void view_activate(struct roots_view *view, bool activate) {
-	if (view->activate) {
-		view->activate(view, activate);
-	}
-
-	if (view->toplevel_handle) {
-		wlr_foreign_toplevel_handle_v1_set_activated(view->toplevel_handle,
-			activate);
-	}
-}
-
-void view_resize(struct roots_view *view, uint32_t width, uint32_t height) {
-	struct wlr_box before;
-	view_get_box(view, &before);
-	if (view->resize) {
-		view->resize(view, width, height);
-	}
-	view_update_output(view, &before);
-}
-
-void view_move_resize(struct roots_view *view, double x, double y,
-		uint32_t width, uint32_t height) {
-	bool update_x = x != view->box.x;
-	bool update_y = y != view->box.y;
-	if (!update_x && !update_y) {
-		view_resize(view, width, height);
-		return;
-	}
-
-	if (view->move_resize) {
-		view->move_resize(view, x, y, width, height);
-		return;
-	}
-
-	view->pending_move_resize.update_x = update_x;
-	view->pending_move_resize.update_y = update_y;
-	view->pending_move_resize.x = x;
-	view->pending_move_resize.y = y;
-	view->pending_move_resize.width = width;
-	view->pending_move_resize.height = height;
-
-	view_resize(view, width, height);
-}
-
-static struct wlr_output *view_get_output(struct roots_view *view) {
-	struct wlr_box view_box;
-	view_get_box(view, &view_box);
-
-	double output_x, output_y;
-	wlr_output_layout_closest_point(view->desktop->layout, NULL,
-		view->box.x + (double)view_box.width/2,
-		view->box.y + (double)view_box.height/2,
-		&output_x, &output_y);
-	return wlr_output_layout_output_at(view->desktop->layout, output_x,
-		output_y);
-}
-
-void view_arrange_maximized(struct roots_view *view) {
-	if (view->fullscreen_output != NULL) {
-		return;
-	}
-
-	struct wlr_box view_box;
-	view_get_box(view, &view_box);
-
-	struct wlr_output *output = view_get_output(view);
-	struct roots_output *roots_output = output->data;
-	struct wlr_box *output_box =
-		wlr_output_layout_get_box(view->desktop->layout, output);
-	struct wlr_box usable_area;
-	memcpy(&usable_area, &roots_output->usable_area,
-			sizeof(struct wlr_box));
-	usable_area.x += output_box->x;
-	usable_area.y += output_box->y;
-
-	view_move_resize(view, usable_area.x, usable_area.y,
-			usable_area.width, usable_area.height);
-	view_rotate(view, 0);
-}
-
-void view_maximize(struct roots_view *view, bool maximized) {
-	if (view->maximized == maximized || view->fullscreen_output != NULL) {
-		return;
-	}
-
-	if (view->maximize) {
-		view->maximize(view, maximized);
-	}
-
-	if (view->toplevel_handle) {
-		wlr_foreign_toplevel_handle_v1_set_maximized(view->toplevel_handle,
-			maximized);
-	}
-
-	if (!view->maximized && maximized) {
-		view->maximized = true;
-		view->saved.x = view->box.x;
-		view->saved.y = view->box.y;
-		view->saved.rotation = view->rotation;
-		view->saved.width = view->box.width;
-		view->saved.height = view->box.height;
-
-		view_arrange_maximized(view);
-	}
-
-	if (view->maximized && !maximized) {
-		view->maximized = false;
-
-		view_move_resize(view, view->saved.x, view->saved.y, view->saved.width,
-			view->saved.height);
-		view_rotate(view, view->saved.rotation);
-	}
-}
-
-void view_set_fullscreen(struct roots_view *view, bool fullscreen,
-		struct wlr_output *output) {
-	bool was_fullscreen = view->fullscreen_output != NULL;
-	if (was_fullscreen == fullscreen) {
-		// TODO: support changing the output?
-		return;
-	}
-
-	// TODO: check if client is focused?
-
-	if (view->set_fullscreen) {
-		view->set_fullscreen(view, fullscreen);
-	}
-
-	if (!was_fullscreen && fullscreen) {
-		if (output == NULL) {
-			output = view_get_output(view);
-		}
-		struct roots_output *roots_output =
-			desktop_output_from_wlr_output(view->desktop, output);
-		if (roots_output == NULL) {
-			return;
-		}
-
-		struct wlr_box view_box;
-		view_get_box(view, &view_box);
-
-		view->saved.x = view->box.x;
-		view->saved.y = view->box.y;
-		view->saved.rotation = view->rotation;
-		view->saved.width = view_box.width;
-		view->saved.height = view_box.height;
-
-		struct wlr_box *output_box =
-			wlr_output_layout_get_box(view->desktop->layout, output);
-		view_move_resize(view, output_box->x, output_box->y, output_box->width,
-			output_box->height);
-		view_rotate(view, 0);
-
-		roots_output->fullscreen_view = view;
-		view->fullscreen_output = roots_output;
-		output_damage_whole(roots_output);
-	}
-
-	if (was_fullscreen && !fullscreen) {
-		view_move_resize(view, view->saved.x, view->saved.y, view->saved.width,
-			view->saved.height);
-		view_rotate(view, view->saved.rotation);
-
-		output_damage_whole(view->fullscreen_output);
-		view->fullscreen_output->fullscreen_view = NULL;
-		view->fullscreen_output = NULL;
-	}
-}
-
-void view_rotate(struct roots_view *view, float rotation) {
-	if (view->rotation == rotation) {
-		return;
-	}
-
-	view_damage_whole(view);
-	view->rotation = rotation;
-	view_damage_whole(view);
-}
-
-void view_cycle_alpha(struct roots_view *view) {
-	view->alpha -= 0.05;
-	/* Don't go completely transparent */
-	if (view->alpha < 0.1) {
-		view->alpha = 1.0;
-	}
-	view_damage_whole(view);
-}
-
-void view_close(struct roots_view *view) {
-	if (view->close) {
-		view->close(view);
-	}
-}
-
-bool view_center(struct roots_view *view) {
-	struct wlr_box box;
-	view_get_box(view, &box);
-
-	struct roots_desktop *desktop = view->desktop;
-	struct roots_input *input = desktop->server->input;
-	struct roots_seat *seat = input_last_active_seat(input);
-	if (!seat) {
-		return false;
-	}
-
-	struct wlr_output *output =
-		wlr_output_layout_output_at(desktop->layout,
-				seat->cursor->cursor->x,
-				seat->cursor->cursor->y);
-	if (!output) {
-		// empty layout
-		return false;
-	}
-
-	const struct wlr_output_layout_output *l_output =
-		wlr_output_layout_get(desktop->layout, output);
-
-	int width, height;
-	wlr_output_effective_resolution(output, &width, &height);
-
-	double view_x = (double)(width - box.width) / 2 + l_output->x;
-	double view_y = (double)(height - box.height) / 2 + l_output->y;
-	view_move(view, view_x, view_y);
-
-	return true;
-}
-
-void view_child_finish(struct roots_view_child *child) {
-	if (child == NULL) {
-		return;
-	}
-	view_damage_whole(child->view);
-	wl_list_remove(&child->link);
-	wl_list_remove(&child->commit.link);
-	wl_list_remove(&child->new_subsurface.link);
-}
-
-static void view_child_handle_commit(struct wl_listener *listener,
-		void *data) {
-	struct roots_view_child *child = wl_container_of(listener, child, commit);
-	view_apply_damage(child->view);
-}
-
-static void view_child_handle_new_subsurface(struct wl_listener *listener,
-		void *data) {
-	struct roots_view_child *child =
-		wl_container_of(listener, child, new_subsurface);
-	struct wlr_subsurface *wlr_subsurface = data;
-	subsurface_create(child->view, wlr_subsurface);
-}
-
-void view_child_init(struct roots_view_child *child, struct roots_view *view,
-		struct wlr_surface *wlr_surface) {
-	assert(child->destroy);
-	child->view = view;
-	child->wlr_surface = wlr_surface;
-	child->commit.notify = view_child_handle_commit;
-	wl_signal_add(&wlr_surface->events.commit, &child->commit);
-	child->new_subsurface.notify = view_child_handle_new_subsurface;
-	wl_signal_add(&wlr_surface->events.new_subsurface, &child->new_subsurface);
-	wl_list_insert(&view->children, &child->link);
-}
-
-static void subsurface_destroy(struct roots_view_child *child) {
-	assert(child->destroy == subsurface_destroy);
-	struct roots_subsurface *subsurface = (struct roots_subsurface *)child;
-	if (subsurface == NULL) {
-		return;
-	}
-	wl_list_remove(&subsurface->destroy.link);
-	wl_list_remove(&subsurface->map.link);
-	wl_list_remove(&subsurface->unmap.link);
-	view_child_finish(&subsurface->view_child);
-	free(subsurface);
-}
-
-static void subsurface_handle_destroy(struct wl_listener *listener,
-		void *data) {
-	struct roots_subsurface *subsurface =
-		wl_container_of(listener, subsurface, destroy);
-	subsurface_destroy(&subsurface->view_child);
-}
-
-static void subsurface_handle_map(struct wl_listener *listener,
-		void *data) {
-	struct roots_subsurface *subsurface =
-		wl_container_of(listener, subsurface, map);
-	struct roots_view *view = subsurface->view_child.view;
-	view_damage_whole(view);
-	input_update_cursor_focus(view->desktop->server->input);
-}
-
-static void subsurface_handle_unmap(struct wl_listener *listener,
-		void *data) {
-	struct roots_subsurface *subsurface =
-		wl_container_of(listener, subsurface, unmap);
-	struct roots_view *view = subsurface->view_child.view;
-	view_damage_whole(view);
-	input_update_cursor_focus(view->desktop->server->input);
-}
-
-struct roots_subsurface *subsurface_create(struct roots_view *view,
-		struct wlr_subsurface *wlr_subsurface) {
-	struct roots_subsurface *subsurface =
-		calloc(1, sizeof(struct roots_subsurface));
-	if (subsurface == NULL) {
-		return NULL;
-	}
-	subsurface->wlr_subsurface = wlr_subsurface;
-	subsurface->view_child.destroy = subsurface_destroy;
-	view_child_init(&subsurface->view_child, view, wlr_subsurface->surface);
-	subsurface->destroy.notify = subsurface_handle_destroy;
-	wl_signal_add(&wlr_subsurface->events.destroy, &subsurface->destroy);
-	subsurface->map.notify = subsurface_handle_map;
-	wl_signal_add(&wlr_subsurface->events.map, &subsurface->map);
-	subsurface->unmap.notify = subsurface_handle_unmap;
-	wl_signal_add(&wlr_subsurface->events.unmap, &subsurface->unmap);
-	return subsurface;
-}
-
-void view_destroy(struct roots_view *view) {
-	if (view == NULL) {
-		return;
-	}
-
-	wl_signal_emit(&view->events.destroy, view);
-
-	if (view->wlr_surface != NULL) {
-		view_unmap(view);
-	}
-
-	// Can happen if fullscreened while unmapped, and hasn't been mapped
-	if (view->fullscreen_output != NULL) {
-		view->fullscreen_output->fullscreen_view = NULL;
-	}
-
-	if (view->destroy) {
-		view->destroy(view);
-	}
-
-	free(view);
-}
-
-static void view_handle_new_subsurface(struct wl_listener *listener,
-		void *data) {
-	struct roots_view *view = wl_container_of(listener, view, new_subsurface);
-	struct wlr_subsurface *wlr_subsurface = data;
-	subsurface_create(view, wlr_subsurface);
-}
-
-void view_map(struct roots_view *view, struct wlr_surface *surface) {
-	assert(view->wlr_surface == NULL);
-
-	view->wlr_surface = surface;
-
-	struct wlr_subsurface *subsurface;
-	wl_list_for_each(subsurface, &view->wlr_surface->subsurfaces,
-			parent_link) {
-		subsurface_create(view, subsurface);
-	}
-
-	view->new_subsurface.notify = view_handle_new_subsurface;
-	wl_signal_add(&view->wlr_surface->events.new_subsurface,
-		&view->new_subsurface);
-
-	wl_list_insert(&view->desktop->views, &view->link);
-	view_damage_whole(view);
-	input_update_cursor_focus(view->desktop->server->input);
-}
-
-void view_unmap(struct roots_view *view) {
-	assert(view->wlr_surface != NULL);
-
-	wl_signal_emit(&view->events.unmap, view);
-
-	view_damage_whole(view);
-	wl_list_remove(&view->link);
-
-	wl_list_remove(&view->new_subsurface.link);
-
-	struct roots_view_child *child, *tmp;
-	wl_list_for_each_safe(child, tmp, &view->children, link) {
-		child->destroy(child);
-	}
-
-	if (view->fullscreen_output != NULL) {
-		output_damage_whole(view->fullscreen_output);
-		view->fullscreen_output->fullscreen_view = NULL;
-		view->fullscreen_output = NULL;
-	}
-
-	view->wlr_surface = NULL;
-	view->box.width = view->box.height = 0;
-
-	if (view->toplevel_handle) {
-		wlr_foreign_toplevel_handle_v1_destroy(view->toplevel_handle);
-		view->toplevel_handle = NULL;
-	}
-}
-
-void view_initial_focus(struct roots_view *view) {
-	struct roots_input *input = view->desktop->server->input;
-	// TODO what seat gets focus? the one with the last input event?
-	struct roots_seat *seat;
-	wl_list_for_each(seat, &input->seats, link) {
-		roots_seat_set_focus(seat, view);
-	}
-}
-
-void view_setup(struct roots_view *view) {
-	view_initial_focus(view);
-
-	if (view->fullscreen_output == NULL && !view->maximized) {
-		view_center(view);
-	}
-
-	view_create_foreign_toplevel_handle(view);
-	view_update_output(view, NULL);
-}
-
-void view_apply_damage(struct roots_view *view) {
-	struct roots_output *output;
-	wl_list_for_each(output, &view->desktop->outputs, link) {
-		output_damage_from_view(output, view);
-	}
-}
-
-void view_damage_whole(struct roots_view *view) {
-	struct roots_output *output;
-	wl_list_for_each(output, &view->desktop->outputs, link) {
-		output_damage_whole_view(output, view);
-	}
-}
-
-void view_update_position(struct roots_view *view, int x, int y) {
-	if (view->box.x == x && view->box.y == y) {
-		return;
-	}
-
-	view_damage_whole(view);
-	view->box.x = x;
-	view->box.y = y;
-	view_damage_whole(view);
-}
-
-void view_update_size(struct roots_view *view, int width, int height) {
-	if (view->box.width == width && view->box.height == height) {
-		return;
-	}
-
-	view_damage_whole(view);
-	view->box.width = width;
-	view->box.height = height;
-	view_damage_whole(view);
-}
-
-void view_update_decorated(struct roots_view *view, bool decorated) {
-	if (view->decorated == decorated) {
-		return;
-	}
-
-	view_damage_whole(view);
-	view->decorated = decorated;
-	if (decorated) {
-		view->border_width = 4;
-		view->titlebar_height = 12;
-	} else {
-		view->border_width = 0;
-		view->titlebar_height = 0;
-	}
-	view_damage_whole(view);
-}
-
-void view_set_title(struct roots_view *view, const char *title) {
-	if (view->toplevel_handle) {
-		wlr_foreign_toplevel_handle_v1_set_title(view->toplevel_handle, title);
-	}
-}
-
-void view_set_app_id(struct roots_view *view, const char *app_id) {
-	if (view->toplevel_handle) {
-		wlr_foreign_toplevel_handle_v1_set_app_id(view->toplevel_handle, app_id);
-	}
-}
-
-static void handle_toplevel_handle_request_maximize(struct wl_listener *listener,
-		void *data) {
-	struct roots_view *view = wl_container_of(listener, view,
-			toplevel_handle_request_maximize);
-	struct wlr_foreign_toplevel_handle_v1_maximized_event *event = data;
-	view_maximize(view, event->maximized);
-}
-
-static void handle_toplevel_handle_request_activate(struct wl_listener *listener,
-		void *data) {
-	struct roots_view *view =
-		wl_container_of(listener, view, toplevel_handle_request_activate);
-	struct wlr_foreign_toplevel_handle_v1_activated_event *event = data;
-
-	struct roots_seat *seat;
-	wl_list_for_each(seat, &view->desktop->server->input->seats, link) {
-		if (event->seat == seat->seat) {
-			roots_seat_set_focus(seat, view);
-		}
-	}
-}
-
-static void handle_toplevel_handle_request_close(struct wl_listener *listener,
-		void *data) {
-	struct roots_view *view =
-		wl_container_of(listener, view, toplevel_handle_request_close);
-	view_close(view);
-}
-
-void view_create_foreign_toplevel_handle(struct roots_view *view) {
-	view->toplevel_handle =
-		wlr_foreign_toplevel_handle_v1_create(
-			view->desktop->foreign_toplevel_manager_v1);
-
-	view->toplevel_handle_request_maximize.notify =
-		handle_toplevel_handle_request_maximize;
-	wl_signal_add(&view->toplevel_handle->events.request_maximize,
-			&view->toplevel_handle_request_maximize);
-	view->toplevel_handle_request_activate.notify =
-		handle_toplevel_handle_request_activate;
-	wl_signal_add(&view->toplevel_handle->events.request_activate,
-			&view->toplevel_handle_request_activate);
-	view->toplevel_handle_request_close.notify =
-		handle_toplevel_handle_request_close;
-	wl_signal_add(&view->toplevel_handle->events.request_close,
-			&view->toplevel_handle_request_close);
-}
-
 static bool view_at(struct roots_view *view, double lx, double ly,
 		struct wlr_surface **surface, double *sx, double *sy) {
-	if (view->type == ROOTS_WL_SHELL_VIEW &&
-			view->wl_shell_surface->state == WLR_WL_SHELL_SURFACE_STATE_POPUP) {
-		return false;
+	if (view->type == ROOTS_WL_SHELL_VIEW) {
+		struct wlr_wl_shell_surface *wl_shell_surface =
+			roots_wl_shell_surface_from_view(view)->wl_shell_surface;
+		if (wl_shell_surface->state == WLR_WL_SHELL_SURFACE_STATE_POPUP) {
+			return false;
+		}
 	}
 	if (view->wlr_surface == NULL) {
 		return false;
@@ -720,17 +71,23 @@ static bool view_at(struct roots_view *view, double lx, double ly,
 	double _sx, _sy;
 	struct wlr_surface *_surface = NULL;
 	switch (view->type) {
-	case ROOTS_XDG_SHELL_V6_VIEW:
-		_surface = wlr_xdg_surface_v6_surface_at(view->xdg_surface_v6,
+	case ROOTS_XDG_SHELL_V6_VIEW:;
+		struct roots_xdg_surface_v6 *xdg_surface_v6 =
+			roots_xdg_surface_v6_from_view(view);
+		_surface = wlr_xdg_surface_v6_surface_at(xdg_surface_v6->xdg_surface_v6,
 			view_sx, view_sy, &_sx, &_sy);
 		break;
-	case ROOTS_XDG_SHELL_VIEW:
-		_surface = wlr_xdg_surface_surface_at(view->xdg_surface,
+	case ROOTS_XDG_SHELL_VIEW:;
+		struct roots_xdg_surface *xdg_surface =
+			roots_xdg_surface_from_view(view);
+		_surface = wlr_xdg_surface_surface_at(xdg_surface->xdg_surface,
 			view_sx, view_sy, &_sx, &_sy);
 		break;
-	case ROOTS_WL_SHELL_VIEW:
-		_surface = wlr_wl_shell_surface_surface_at(view->wl_shell_surface,
-			view_sx, view_sy, &_sx, &_sy);
+	case ROOTS_WL_SHELL_VIEW:;
+		struct roots_wl_shell_surface *wl_shell_surface =
+			roots_wl_shell_surface_from_view(view);
+		_surface = wlr_wl_shell_surface_surface_at(
+			wl_shell_surface->wl_shell_surface, view_sx, view_sy, &_sx, &_sy);
 		break;
 #if WLR_HAS_XWAYLAND
 	case ROOTS_XWAYLAND_VIEW:
diff --git a/rootston/meson.build b/rootston/meson.build
index db90a508..6a4fbe76 100644
--- a/rootston/meson.build
+++ b/rootston/meson.build
@@ -12,10 +12,11 @@ sources = [
 	'seat.c',
 	'switch.c',
 	'text_input.c',
+	'view.c',
 	'virtual_keyboard.c',
 	'wl_shell.c',
-	'xdg_shell.c',
 	'xdg_shell_v6.c',
+	'xdg_shell.c',
 ]
 
 if conf_data.get('WLR_HAS_XWAYLAND', 0) == 1
diff --git a/rootston/output.c b/rootston/output.c
index 3aad1c06..74200ca9 100644
--- a/rootston/output.c
+++ b/rootston/output.c
@@ -43,8 +43,9 @@ struct layout_data {
 	float rotation;
 };
 
-static void get_layout_position(struct layout_data *data, double *lx, double *ly,
-		const struct wlr_surface *surface, int sx, int sy) {
+static void get_layout_position(struct layout_data *data,
+		double *lx, double *ly, const struct wlr_surface *surface,
+		int sx, int sy) {
 	double _sx = sx, _sy = sy;
 	rotate_child_position(&_sx, &_sy, surface->current.width,
 		surface->current.height, data->width, data->height, data->rotation);
@@ -78,17 +79,23 @@ static void view_for_each_surface(struct roots_view *view,
 	layout_data->rotation = view->rotation;
 
 	switch (view->type) {
-	case ROOTS_XDG_SHELL_V6_VIEW:
-		wlr_xdg_surface_v6_for_each_surface(view->xdg_surface_v6, iterator,
-			user_data);
+	case ROOTS_XDG_SHELL_V6_VIEW:;
+		struct roots_xdg_surface_v6 *xdg_surface_v6 =
+			roots_xdg_surface_v6_from_view(view);
+		wlr_xdg_surface_v6_for_each_surface(xdg_surface_v6->xdg_surface_v6,
+			iterator, user_data);
 		break;
-	case ROOTS_XDG_SHELL_VIEW:
-		wlr_xdg_surface_for_each_surface(view->xdg_surface, iterator,
+	case ROOTS_XDG_SHELL_VIEW:;
+		struct roots_xdg_surface *xdg_surface =
+			roots_xdg_surface_from_view(view);
+		wlr_xdg_surface_for_each_surface(xdg_surface->xdg_surface, iterator,
 			user_data);
 		break;
-	case ROOTS_WL_SHELL_VIEW:
-		wlr_wl_shell_surface_for_each_surface(view->wl_shell_surface, iterator,
-			user_data);
+	case ROOTS_WL_SHELL_VIEW:;
+		struct roots_wl_shell_surface *wl_shell_surface =
+			roots_wl_shell_surface_from_view(view);
+		wlr_wl_shell_surface_for_each_surface(wl_shell_surface->wl_shell_surface,
+			iterator, user_data);
 		break;
 #if WLR_HAS_XWAYLAND
 	case ROOTS_XWAYLAND_VIEW:
@@ -165,7 +172,10 @@ static void output_for_each_surface(struct roots_output *output,
 
 #if WLR_HAS_XWAYLAND
 		if (view->type == ROOTS_XWAYLAND_VIEW) {
-			xwayland_children_for_each_surface(view->xwayland_surface,
+			struct roots_xwayland_surface *xwayland_surface =
+				roots_xwayland_surface_from_view(view);
+			xwayland_children_for_each_surface(
+				xwayland_surface->xwayland_surface,
 				iterator, layout_data, user_data);
 		}
 #endif
@@ -497,7 +507,10 @@ static void render_output(struct roots_output *output) {
 		// the fullscreen window's children so we have to traverse the tree.
 #if WLR_HAS_XWAYLAND
 		if (view->type == ROOTS_XWAYLAND_VIEW) {
-			xwayland_children_for_each_surface(view->xwayland_surface,
+			struct roots_xwayland_surface *xwayland_surface =
+				roots_xwayland_surface_from_view(view);
+			xwayland_children_for_each_surface(
+				xwayland_surface->xwayland_surface,
 				render_surface, &data.layout, &data);
 		}
 #endif
@@ -568,9 +581,12 @@ static bool view_accept_damage(struct roots_output *output,
 	if (output->fullscreen_view->type == ROOTS_XWAYLAND_VIEW &&
 			view->type == ROOTS_XWAYLAND_VIEW) {
 		// Special case: accept damage from children
-		struct wlr_xwayland_surface *xsurface = view->xwayland_surface;
+		struct wlr_xwayland_surface *xsurface =
+			roots_xwayland_surface_from_view(view)->xwayland_surface;
+		struct wlr_xwayland_surface *fullscreen_xsurface =
+			roots_xwayland_surface_from_view(output->fullscreen_view)->xwayland_surface;
 		while (xsurface != NULL) {
-			if (output->fullscreen_view->xwayland_surface == xsurface) {
+			if (fullscreen_xsurface == xsurface) {
 				return true;
 			}
 			xsurface = xsurface->parent;
diff --git a/rootston/seat.c b/rootston/seat.c
index cd95472d..385cf401 100644
--- a/rootston/seat.c
+++ b/rootston/seat.c
@@ -1293,9 +1293,12 @@ void roots_seat_set_focus(struct roots_seat *seat, struct roots_view *view) {
 	bool unfullscreen = true;
 
 #if WLR_HAS_XWAYLAND
-	if (view && view->type == ROOTS_XWAYLAND_VIEW &&
-			view->xwayland_surface->override_redirect) {
-		unfullscreen = false;
+	if (view && view->type == ROOTS_XWAYLAND_VIEW) {
+		struct roots_xwayland_surface *xwayland_surface =
+			roots_xwayland_surface_from_view(view);
+		if (xwayland_surface->xwayland_surface->override_redirect) {
+			unfullscreen = false;
+		}
 	}
 #endif
 
@@ -1322,10 +1325,13 @@ void roots_seat_set_focus(struct roots_seat *seat, struct roots_view *view) {
 	}
 
 #if WLR_HAS_XWAYLAND
-	if (view && view->type == ROOTS_XWAYLAND_VIEW &&
-			!wlr_xwayland_or_surface_wants_focus(
-				view->xwayland_surface)) {
-		return;
+	if (view && view->type == ROOTS_XWAYLAND_VIEW) {
+		struct roots_xwayland_surface *xwayland_surface =
+			roots_xwayland_surface_from_view(view);
+		if (!wlr_xwayland_or_surface_wants_focus(
+				xwayland_surface->xwayland_surface)) {
+			return;
+		}
 	}
 #endif
 	struct roots_seat_view *seat_view = NULL;
diff --git a/rootston/view.c b/rootston/view.c
new file mode 100644
index 00000000..a4c1611d
--- /dev/null
+++ b/rootston/view.c
@@ -0,0 +1,659 @@
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wlr/types/wlr_output_layout.h>
+#include "rootston/desktop.h"
+#include "rootston/input.h"
+#include "rootston/seat.h"
+#include "rootston/server.h"
+#include "rootston/view.h"
+
+void view_init(struct roots_view *view, const struct roots_view_interface *impl,
+		enum roots_view_type type, struct roots_desktop *desktop) {
+	assert(impl->destroy);
+	view->impl = impl;
+	view->type = type;
+	view->desktop = desktop;
+	view->alpha = 1.0f;
+	wl_signal_init(&view->events.unmap);
+	wl_signal_init(&view->events.destroy);
+	wl_list_init(&view->children);
+}
+
+void view_destroy(struct roots_view *view) {
+	if (view == NULL) {
+		return;
+	}
+
+	wl_signal_emit(&view->events.destroy, view);
+
+	if (view->wlr_surface != NULL) {
+		view_unmap(view);
+	}
+
+	// Can happen if fullscreened while unmapped, and hasn't been mapped
+	if (view->fullscreen_output != NULL) {
+		view->fullscreen_output->fullscreen_view = NULL;
+	}
+
+	view->impl->destroy(view);
+}
+
+void view_get_box(const struct roots_view *view, struct wlr_box *box) {
+	box->x = view->box.x;
+	box->y = view->box.y;
+	box->width = view->box.width;
+	box->height = view->box.height;
+}
+
+void view_get_deco_box(const struct roots_view *view, struct wlr_box *box) {
+	view_get_box(view, box);
+	if (!view->decorated) {
+		return;
+	}
+
+	box->x -= view->border_width;
+	box->y -= (view->border_width + view->titlebar_height);
+	box->width += view->border_width * 2;
+	box->height += (view->border_width * 2 + view->titlebar_height);
+}
+
+enum roots_deco_part view_get_deco_part(struct roots_view *view, double sx,
+		double sy) {
+	if (!view->decorated) {
+		return ROOTS_DECO_PART_NONE;
+	}
+
+	int sw = view->wlr_surface->current.width;
+	int sh = view->wlr_surface->current.height;
+	int bw = view->border_width;
+	int titlebar_h = view->titlebar_height;
+
+	if (sx > 0 && sx < sw && sy < 0 && sy > -view->titlebar_height) {
+		return ROOTS_DECO_PART_TITLEBAR;
+	}
+
+	enum roots_deco_part parts = 0;
+	if (sy >= -(titlebar_h + bw) &&
+			sy <= sh + bw) {
+		if (sx < 0 && sx > -bw) {
+			parts |= ROOTS_DECO_PART_LEFT_BORDER;
+		} else if (sx > sw && sx < sw + bw) {
+			parts |= ROOTS_DECO_PART_RIGHT_BORDER;
+		}
+	}
+
+	if (sx >= -bw && sx <= sw + bw) {
+		if (sy > sh && sy <= sh + bw) {
+			parts |= ROOTS_DECO_PART_BOTTOM_BORDER;
+		} else if (sy >= -(titlebar_h + bw) && sy < 0) {
+			parts |= ROOTS_DECO_PART_TOP_BORDER;
+		}
+	}
+
+	// TODO corners
+
+	return parts;
+}
+
+static void view_update_output(const struct roots_view *view,
+		const struct wlr_box *before) {
+	struct roots_desktop *desktop = view->desktop;
+
+	if (view->wlr_surface == NULL) {
+		return;
+	}
+
+	struct wlr_box box;
+	view_get_box(view, &box);
+
+	struct roots_output *output;
+	wl_list_for_each(output, &desktop->outputs, link) {
+		bool intersected = before != NULL && wlr_output_layout_intersects(
+			desktop->layout, output->wlr_output, before);
+		bool intersects = wlr_output_layout_intersects(desktop->layout,
+			output->wlr_output, &box);
+		if (intersected && !intersects) {
+			wlr_surface_send_leave(view->wlr_surface, output->wlr_output);
+			if (view->toplevel_handle) {
+				wlr_foreign_toplevel_handle_v1_output_leave(
+					view->toplevel_handle, output->wlr_output);
+			}
+		}
+		if (!intersected && intersects) {
+			wlr_surface_send_enter(view->wlr_surface, output->wlr_output);
+			if (view->toplevel_handle) {
+				wlr_foreign_toplevel_handle_v1_output_enter(
+					view->toplevel_handle, output->wlr_output);
+			}
+		}
+	}
+}
+
+void view_move(struct roots_view *view, double x, double y) {
+	if (view->box.x == x && view->box.y == y) {
+		return;
+	}
+
+	struct wlr_box before;
+	view_get_box(view, &before);
+	if (view->impl->move) {
+		view->impl->move(view, x, y);
+	} else {
+		view_update_position(view, x, y);
+	}
+	view_update_output(view, &before);
+}
+
+void view_activate(struct roots_view *view, bool activate) {
+	if (view->impl->activate) {
+		view->impl->activate(view, activate);
+	}
+
+	if (view->toplevel_handle) {
+		wlr_foreign_toplevel_handle_v1_set_activated(view->toplevel_handle,
+			activate);
+	}
+}
+
+void view_resize(struct roots_view *view, uint32_t width, uint32_t height) {
+	struct wlr_box before;
+	view_get_box(view, &before);
+	if (view->impl->resize) {
+		view->impl->resize(view, width, height);
+	}
+	view_update_output(view, &before);
+}
+
+void view_move_resize(struct roots_view *view, double x, double y,
+		uint32_t width, uint32_t height) {
+	bool update_x = x != view->box.x;
+	bool update_y = y != view->box.y;
+	if (!update_x && !update_y) {
+		view_resize(view, width, height);
+		return;
+	}
+
+	if (view->impl->move_resize) {
+		view->impl->move_resize(view, x, y, width, height);
+		return;
+	}
+
+	view->pending_move_resize.update_x = update_x;
+	view->pending_move_resize.update_y = update_y;
+	view->pending_move_resize.x = x;
+	view->pending_move_resize.y = y;
+	view->pending_move_resize.width = width;
+	view->pending_move_resize.height = height;
+
+	view_resize(view, width, height);
+}
+
+static struct wlr_output *view_get_output(struct roots_view *view) {
+	struct wlr_box view_box;
+	view_get_box(view, &view_box);
+
+	double output_x, output_y;
+	wlr_output_layout_closest_point(view->desktop->layout, NULL,
+		view->box.x + (double)view_box.width/2,
+		view->box.y + (double)view_box.height/2,
+		&output_x, &output_y);
+	return wlr_output_layout_output_at(view->desktop->layout, output_x,
+		output_y);
+}
+
+void view_arrange_maximized(struct roots_view *view) {
+	if (view->fullscreen_output != NULL) {
+		return;
+	}
+
+	struct wlr_box view_box;
+	view_get_box(view, &view_box);
+
+	struct wlr_output *output = view_get_output(view);
+	struct roots_output *roots_output = output->data;
+	struct wlr_box *output_box =
+		wlr_output_layout_get_box(view->desktop->layout, output);
+	struct wlr_box usable_area;
+	memcpy(&usable_area, &roots_output->usable_area,
+			sizeof(struct wlr_box));
+	usable_area.x += output_box->x;
+	usable_area.y += output_box->y;
+
+	view_move_resize(view, usable_area.x, usable_area.y,
+			usable_area.width, usable_area.height);
+	view_rotate(view, 0);
+}
+
+void view_maximize(struct roots_view *view, bool maximized) {
+	if (view->maximized == maximized || view->fullscreen_output != NULL) {
+		return;
+	}
+
+	if (view->impl->maximize) {
+		view->impl->maximize(view, maximized);
+	}
+
+	if (view->toplevel_handle) {
+		wlr_foreign_toplevel_handle_v1_set_maximized(view->toplevel_handle,
+			maximized);
+	}
+
+	if (!view->maximized && maximized) {
+		view->maximized = true;
+		view->saved.x = view->box.x;
+		view->saved.y = view->box.y;
+		view->saved.rotation = view->rotation;
+		view->saved.width = view->box.width;
+		view->saved.height = view->box.height;
+
+		view_arrange_maximized(view);
+	}
+
+	if (view->maximized && !maximized) {
+		view->maximized = false;
+
+		view_move_resize(view, view->saved.x, view->saved.y, view->saved.width,
+			view->saved.height);
+		view_rotate(view, view->saved.rotation);
+	}
+}
+
+void view_set_fullscreen(struct roots_view *view, bool fullscreen,
+		struct wlr_output *output) {
+	bool was_fullscreen = view->fullscreen_output != NULL;
+	if (was_fullscreen == fullscreen) {
+		// TODO: support changing the output?
+		return;
+	}
+
+	// TODO: check if client is focused?
+
+	if (view->impl->set_fullscreen) {
+		view->impl->set_fullscreen(view, fullscreen);
+	}
+
+	if (!was_fullscreen && fullscreen) {
+		if (output == NULL) {
+			output = view_get_output(view);
+		}
+		struct roots_output *roots_output =
+			desktop_output_from_wlr_output(view->desktop, output);
+		if (roots_output == NULL) {
+			return;
+		}
+
+		struct wlr_box view_box;
+		view_get_box(view, &view_box);
+
+		view->saved.x = view->box.x;
+		view->saved.y = view->box.y;
+		view->saved.rotation = view->rotation;
+		view->saved.width = view_box.width;
+		view->saved.height = view_box.height;
+
+		struct wlr_box *output_box =
+			wlr_output_layout_get_box(view->desktop->layout, output);
+		view_move_resize(view, output_box->x, output_box->y, output_box->width,
+			output_box->height);
+		view_rotate(view, 0);
+
+		roots_output->fullscreen_view = view;
+		view->fullscreen_output = roots_output;
+		output_damage_whole(roots_output);
+	}
+
+	if (was_fullscreen && !fullscreen) {
+		view_move_resize(view, view->saved.x, view->saved.y, view->saved.width,
+			view->saved.height);
+		view_rotate(view, view->saved.rotation);
+
+		output_damage_whole(view->fullscreen_output);
+		view->fullscreen_output->fullscreen_view = NULL;
+		view->fullscreen_output = NULL;
+	}
+}
+
+void view_rotate(struct roots_view *view, float rotation) {
+	if (view->rotation == rotation) {
+		return;
+	}
+
+	view_damage_whole(view);
+	view->rotation = rotation;
+	view_damage_whole(view);
+}
+
+void view_cycle_alpha(struct roots_view *view) {
+	view->alpha -= 0.05;
+	/* Don't go completely transparent */
+	if (view->alpha < 0.1) {
+		view->alpha = 1.0;
+	}
+	view_damage_whole(view);
+}
+
+void view_close(struct roots_view *view) {
+	if (view->impl->close) {
+		view->impl->close(view);
+	}
+}
+
+bool view_center(struct roots_view *view) {
+	struct wlr_box box;
+	view_get_box(view, &box);
+
+	struct roots_desktop *desktop = view->desktop;
+	struct roots_input *input = desktop->server->input;
+	struct roots_seat *seat = input_last_active_seat(input);
+	if (!seat) {
+		return false;
+	}
+
+	struct wlr_output *output = wlr_output_layout_output_at(desktop->layout,
+		seat->cursor->cursor->x, seat->cursor->cursor->y);
+	if (!output) {
+		// empty layout
+		return false;
+	}
+
+	const struct wlr_output_layout_output *l_output =
+		wlr_output_layout_get(desktop->layout, output);
+
+	int width, height;
+	wlr_output_effective_resolution(output, &width, &height);
+
+	double view_x = (double)(width - box.width) / 2 + l_output->x;
+	double view_y = (double)(height - box.height) / 2 + l_output->y;
+	view_move(view, view_x, view_y);
+
+	return true;
+}
+
+void view_child_destroy(struct roots_view_child *child) {
+	if (child == NULL) {
+		return;
+	}
+	view_damage_whole(child->view);
+	wl_list_remove(&child->link);
+	wl_list_remove(&child->commit.link);
+	wl_list_remove(&child->new_subsurface.link);
+	child->impl->destroy(child);
+}
+
+static void view_child_handle_commit(struct wl_listener *listener,
+		void *data) {
+	struct roots_view_child *child = wl_container_of(listener, child, commit);
+	view_apply_damage(child->view);
+}
+
+static void view_child_handle_new_subsurface(struct wl_listener *listener,
+		void *data) {
+	struct roots_view_child *child =
+		wl_container_of(listener, child, new_subsurface);
+	struct wlr_subsurface *wlr_subsurface = data;
+	subsurface_create(child->view, wlr_subsurface);
+}
+
+void view_child_init(struct roots_view_child *child,
+		const struct roots_view_child_interface *impl, struct roots_view *view,
+		struct wlr_surface *wlr_surface) {
+	assert(impl->destroy);
+	child->impl = impl;
+	child->view = view;
+	child->wlr_surface = wlr_surface;
+	child->commit.notify = view_child_handle_commit;
+	wl_signal_add(&wlr_surface->events.commit, &child->commit);
+	child->new_subsurface.notify = view_child_handle_new_subsurface;
+	wl_signal_add(&wlr_surface->events.new_subsurface, &child->new_subsurface);
+	wl_list_insert(&view->children, &child->link);
+}
+
+static const struct roots_view_child_interface subsurface_impl;
+
+static void subsurface_destroy(struct roots_view_child *child) {
+	assert(child->impl == &subsurface_impl);
+	struct roots_subsurface *subsurface = (struct roots_subsurface *)child;
+	wl_list_remove(&subsurface->destroy.link);
+	wl_list_remove(&subsurface->map.link);
+	wl_list_remove(&subsurface->unmap.link);
+	free(subsurface);
+}
+
+static const struct roots_view_child_interface subsurface_impl = {
+	.destroy = subsurface_destroy,
+};
+
+static void subsurface_handle_destroy(struct wl_listener *listener,
+		void *data) {
+	struct roots_subsurface *subsurface =
+		wl_container_of(listener, subsurface, destroy);
+	view_child_destroy(&subsurface->view_child);
+}
+
+static void subsurface_handle_map(struct wl_listener *listener,
+		void *data) {
+	struct roots_subsurface *subsurface =
+		wl_container_of(listener, subsurface, map);
+	struct roots_view *view = subsurface->view_child.view;
+	view_damage_whole(view);
+	input_update_cursor_focus(view->desktop->server->input);
+}
+
+static void subsurface_handle_unmap(struct wl_listener *listener,
+		void *data) {
+	struct roots_subsurface *subsurface =
+		wl_container_of(listener, subsurface, unmap);
+	struct roots_view *view = subsurface->view_child.view;
+	view_damage_whole(view);
+	input_update_cursor_focus(view->desktop->server->input);
+}
+
+struct roots_subsurface *subsurface_create(struct roots_view *view,
+		struct wlr_subsurface *wlr_subsurface) {
+	struct roots_subsurface *subsurface =
+		calloc(1, sizeof(struct roots_subsurface));
+	if (subsurface == NULL) {
+		return NULL;
+	}
+	subsurface->wlr_subsurface = wlr_subsurface;
+	view_child_init(&subsurface->view_child, &subsurface_impl,
+		view, wlr_subsurface->surface);
+	subsurface->destroy.notify = subsurface_handle_destroy;
+	wl_signal_add(&wlr_subsurface->events.destroy, &subsurface->destroy);
+	subsurface->map.notify = subsurface_handle_map;
+	wl_signal_add(&wlr_subsurface->events.map, &subsurface->map);
+	subsurface->unmap.notify = subsurface_handle_unmap;
+	wl_signal_add(&wlr_subsurface->events.unmap, &subsurface->unmap);
+	return subsurface;
+}
+
+static void view_handle_new_subsurface(struct wl_listener *listener,
+		void *data) {
+	struct roots_view *view = wl_container_of(listener, view, new_subsurface);
+	struct wlr_subsurface *wlr_subsurface = data;
+	subsurface_create(view, wlr_subsurface);
+}
+
+void view_map(struct roots_view *view, struct wlr_surface *surface) {
+	assert(view->wlr_surface == NULL);
+
+	view->wlr_surface = surface;
+
+	struct wlr_subsurface *subsurface;
+	wl_list_for_each(subsurface, &view->wlr_surface->subsurfaces,
+			parent_link) {
+		subsurface_create(view, subsurface);
+	}
+
+	view->new_subsurface.notify = view_handle_new_subsurface;
+	wl_signal_add(&view->wlr_surface->events.new_subsurface,
+		&view->new_subsurface);
+
+	wl_list_insert(&view->desktop->views, &view->link);
+	view_damage_whole(view);
+	input_update_cursor_focus(view->desktop->server->input);
+}
+
+void view_unmap(struct roots_view *view) {
+	assert(view->wlr_surface != NULL);
+
+	wl_signal_emit(&view->events.unmap, view);
+
+	view_damage_whole(view);
+	wl_list_remove(&view->link);
+
+	wl_list_remove(&view->new_subsurface.link);
+
+	struct roots_view_child *child, *tmp;
+	wl_list_for_each_safe(child, tmp, &view->children, link) {
+		view_child_destroy(child);
+	}
+
+	if (view->fullscreen_output != NULL) {
+		output_damage_whole(view->fullscreen_output);
+		view->fullscreen_output->fullscreen_view = NULL;
+		view->fullscreen_output = NULL;
+	}
+
+	view->wlr_surface = NULL;
+	view->box.width = view->box.height = 0;
+
+	if (view->toplevel_handle) {
+		wlr_foreign_toplevel_handle_v1_destroy(view->toplevel_handle);
+		view->toplevel_handle = NULL;
+	}
+}
+
+void view_initial_focus(struct roots_view *view) {
+	struct roots_input *input = view->desktop->server->input;
+	// TODO what seat gets focus? the one with the last input event?
+	struct roots_seat *seat;
+	wl_list_for_each(seat, &input->seats, link) {
+		roots_seat_set_focus(seat, view);
+	}
+}
+
+void view_setup(struct roots_view *view) {
+	view_initial_focus(view);
+
+	if (view->fullscreen_output == NULL && !view->maximized) {
+		view_center(view);
+	}
+
+	view_create_foreign_toplevel_handle(view);
+	view_update_output(view, NULL);
+}
+
+void view_apply_damage(struct roots_view *view) {
+	struct roots_output *output;
+	wl_list_for_each(output, &view->desktop->outputs, link) {
+		output_damage_from_view(output, view);
+	}
+}
+
+void view_damage_whole(struct roots_view *view) {
+	struct roots_output *output;
+	wl_list_for_each(output, &view->desktop->outputs, link) {
+		output_damage_whole_view(output, view);
+	}
+}
+
+void view_update_position(struct roots_view *view, int x, int y) {
+	if (view->box.x == x && view->box.y == y) {
+		return;
+	}
+
+	view_damage_whole(view);
+	view->box.x = x;
+	view->box.y = y;
+	view_damage_whole(view);
+}
+
+void view_update_size(struct roots_view *view, int width, int height) {
+	if (view->box.width == width && view->box.height == height) {
+		return;
+	}
+
+	view_damage_whole(view);
+	view->box.width = width;
+	view->box.height = height;
+	view_damage_whole(view);
+}
+
+void view_update_decorated(struct roots_view *view, bool decorated) {
+	if (view->decorated == decorated) {
+		return;
+	}
+
+	view_damage_whole(view);
+	view->decorated = decorated;
+	if (decorated) {
+		view->border_width = 4;
+		view->titlebar_height = 12;
+	} else {
+		view->border_width = 0;
+		view->titlebar_height = 0;
+	}
+	view_damage_whole(view);
+}
+
+void view_set_title(struct roots_view *view, const char *title) {
+	if (view->toplevel_handle) {
+		wlr_foreign_toplevel_handle_v1_set_title(view->toplevel_handle, title);
+	}
+}
+
+void view_set_app_id(struct roots_view *view, const char *app_id) {
+	if (view->toplevel_handle) {
+		wlr_foreign_toplevel_handle_v1_set_app_id(view->toplevel_handle, app_id);
+	}
+}
+
+static void handle_toplevel_handle_request_maximize(struct wl_listener *listener,
+		void *data) {
+	struct roots_view *view = wl_container_of(listener, view,
+			toplevel_handle_request_maximize);
+	struct wlr_foreign_toplevel_handle_v1_maximized_event *event = data;
+	view_maximize(view, event->maximized);
+}
+
+static void handle_toplevel_handle_request_activate(struct wl_listener *listener,
+		void *data) {
+	struct roots_view *view =
+		wl_container_of(listener, view, toplevel_handle_request_activate);
+	struct wlr_foreign_toplevel_handle_v1_activated_event *event = data;
+
+	struct roots_seat *seat;
+	wl_list_for_each(seat, &view->desktop->server->input->seats, link) {
+		if (event->seat == seat->seat) {
+			roots_seat_set_focus(seat, view);
+		}
+	}
+}
+
+static void handle_toplevel_handle_request_close(struct wl_listener *listener,
+		void *data) {
+	struct roots_view *view =
+		wl_container_of(listener, view, toplevel_handle_request_close);
+	view_close(view);
+}
+
+void view_create_foreign_toplevel_handle(struct roots_view *view) {
+	view->toplevel_handle =
+		wlr_foreign_toplevel_handle_v1_create(
+			view->desktop->foreign_toplevel_manager_v1);
+
+	view->toplevel_handle_request_maximize.notify =
+		handle_toplevel_handle_request_maximize;
+	wl_signal_add(&view->toplevel_handle->events.request_maximize,
+			&view->toplevel_handle_request_maximize);
+	view->toplevel_handle_request_activate.notify =
+		handle_toplevel_handle_request_activate;
+	wl_signal_add(&view->toplevel_handle->events.request_activate,
+			&view->toplevel_handle_request_activate);
+	view->toplevel_handle_request_close.notify =
+		handle_toplevel_handle_request_close;
+	wl_signal_add(&view->toplevel_handle->events.request_close,
+			&view->toplevel_handle_request_close);
+}
diff --git a/rootston/wl_shell.c b/rootston/wl_shell.c
index 2bf4f4c2..b60f6ac7 100644
--- a/rootston/wl_shell.c
+++ b/rootston/wl_shell.c
@@ -10,29 +10,31 @@
 #include "rootston/input.h"
 #include "rootston/server.h"
 
+static const struct roots_view_child_interface popup_impl;
+
 static void popup_destroy(struct roots_view_child *child) {
-	assert(child->destroy == popup_destroy);
+	assert(child->impl == &popup_impl);
 	struct roots_wl_shell_popup *popup = (struct roots_wl_shell_popup *)child;
-	if (popup == NULL) {
-		return;
-	}
 	wl_list_remove(&popup->destroy.link);
 	wl_list_remove(&popup->set_state.link);
 	wl_list_remove(&popup->new_popup.link);
-	view_child_finish(&popup->view_child);
 	free(popup);
 }
 
+static const struct roots_view_child_interface popup_impl = {
+	.destroy = popup_destroy,
+};
+
 static void popup_handle_destroy(struct wl_listener *listener, void *data) {
 	struct roots_wl_shell_popup *popup =
 		wl_container_of(listener, popup, destroy);
-	popup_destroy((struct roots_view_child *)popup);
+	view_child_destroy(&popup->view_child);
 }
 
 static void popup_handle_set_state(struct wl_listener *listener, void *data) {
 	struct roots_wl_shell_popup *popup =
 		wl_container_of(listener, popup, set_state);
-	popup_destroy((struct roots_view_child *)popup);
+	view_child_destroy(&popup->view_child);
 }
 
 static struct roots_wl_shell_popup *popup_create(struct roots_view *view,
@@ -53,8 +55,8 @@ static struct roots_wl_shell_popup *popup_create(struct roots_view *view,
 		return NULL;
 	}
 	popup->wlr_wl_shell_surface = wlr_wl_shell_surface;
-	popup->view_child.destroy = popup_destroy;
-	view_child_init(&popup->view_child, view, wlr_wl_shell_surface->surface);
+	view_child_init(&popup->view_child, &popup_impl,
+		view, wlr_wl_shell_surface->surface);
 	popup->destroy.notify = popup_handle_destroy;
 	wl_signal_add(&wlr_wl_shell_surface->events.destroy, &popup->destroy);
 	popup->set_state.notify = popup_handle_set_state;
@@ -66,21 +68,21 @@ static struct roots_wl_shell_popup *popup_create(struct roots_view *view,
 
 
 static void resize(struct roots_view *view, uint32_t width, uint32_t height) {
-	assert(view->type == ROOTS_WL_SHELL_VIEW);
-	struct wlr_wl_shell_surface *surf = view->wl_shell_surface;
+	struct wlr_wl_shell_surface *surf =
+		roots_wl_shell_surface_from_view(view)->wl_shell_surface;
 	wlr_wl_shell_surface_configure(surf, WL_SHELL_SURFACE_RESIZE_NONE, width,
 		height);
 }
 
 static void close(struct roots_view *view) {
-	assert(view->type == ROOTS_WL_SHELL_VIEW);
-	struct wlr_wl_shell_surface *surf = view->wl_shell_surface;
+	struct wlr_wl_shell_surface *surf =
+		roots_wl_shell_surface_from_view(view)->wl_shell_surface;
 	wl_client_destroy(surf->client);
 }
 
 static void destroy(struct roots_view *view) {
-	assert(view->type == ROOTS_WL_SHELL_VIEW);
-	struct roots_wl_shell_surface *roots_surface = view->roots_wl_shell_surface;
+	struct roots_wl_shell_surface *roots_surface =
+		roots_wl_shell_surface_from_view(view);
 	wl_list_remove(&roots_surface->destroy.link);
 	wl_list_remove(&roots_surface->request_move.link);
 	wl_list_remove(&roots_surface->request_resize.link);
@@ -93,10 +95,16 @@ static void destroy(struct roots_view *view) {
 	free(roots_surface);
 }
 
+static const struct roots_view_interface view_impl = {
+	.resize = resize,
+	.close = close,
+	.destroy = destroy,
+};
+
 static void handle_request_move(struct wl_listener *listener, void *data) {
 	struct roots_wl_shell_surface *roots_surface =
 		wl_container_of(listener, roots_surface, request_move);
-	struct roots_view *view = roots_surface->view;
+	struct roots_view *view = &roots_surface->view;
 	struct roots_input *input = view->desktop->server->input;
 	struct wlr_wl_shell_surface_move_event *e = data;
 	struct roots_seat *seat = input_seat_from_wlr_seat(input, e->seat->seat);
@@ -109,7 +117,7 @@ static void handle_request_move(struct wl_listener *listener, void *data) {
 static void handle_request_resize(struct wl_listener *listener, void *data) {
 	struct roots_wl_shell_surface *roots_surface =
 		wl_container_of(listener, roots_surface, request_resize);
-	struct roots_view *view = roots_surface->view;
+	struct roots_view *view = &roots_surface->view;
 	struct roots_input *input = view->desktop->server->input;
 	struct wlr_wl_shell_surface_resize_event *e = data;
 	struct roots_seat *seat = input_seat_from_wlr_seat(input, e->seat->seat);
@@ -123,7 +131,7 @@ static void handle_request_maximize(struct wl_listener *listener,
 		void *data) {
 	struct roots_wl_shell_surface *roots_surface =
 		wl_container_of(listener, roots_surface, request_maximize);
-	struct roots_view *view = roots_surface->view;
+	struct roots_view *view = &roots_surface->view;
 	//struct wlr_wl_shell_surface_maximize_event *e = data;
 	view_maximize(view, true);
 }
@@ -132,7 +140,7 @@ static void handle_request_fullscreen(struct wl_listener *listener,
 		void *data) {
 	struct roots_wl_shell_surface *roots_surface =
 		wl_container_of(listener, roots_surface, request_fullscreen);
-	struct roots_view *view = roots_surface->view;
+	struct roots_view *view = &roots_surface->view;
 	struct wlr_wl_shell_surface_set_fullscreen_event *e = data;
 	view_set_fullscreen(view, true, e->output);
 }
@@ -140,8 +148,8 @@ static void handle_request_fullscreen(struct wl_listener *listener,
 static void handle_set_state(struct wl_listener *listener, void *data) {
 	struct roots_wl_shell_surface *roots_surface =
 		wl_container_of(listener, roots_surface, set_state);
-	struct roots_view *view = roots_surface->view;
-	struct wlr_wl_shell_surface *surface = view->wl_shell_surface;
+	struct roots_view *view = &roots_surface->view;
+	struct wlr_wl_shell_surface *surface = roots_surface->wl_shell_surface;
 	if (view->maximized &&
 			surface->state != WLR_WL_SHELL_SURFACE_STATE_MAXIMIZED) {
 		view_maximize(view, false);
@@ -155,21 +163,21 @@ static void handle_set_state(struct wl_listener *listener, void *data) {
 static void handle_set_title(struct wl_listener *listener, void *data) {
 	struct roots_wl_shell_surface *roots_surface =
 		wl_container_of(listener, roots_surface, set_state);
-	view_set_title(roots_surface->view,
-			roots_surface->view->wl_shell_surface->title);
+	view_set_title(&roots_surface->view,
+		roots_surface->wl_shell_surface->title);
 }
 
 static void handle_set_class(struct wl_listener *listener, void *data) {
 	struct roots_wl_shell_surface *roots_surface =
 		wl_container_of(listener, roots_surface, set_state);
-	view_set_app_id(roots_surface->view,
-			roots_surface->view->wl_shell_surface->class);
+	view_set_app_id(&roots_surface->view,
+		roots_surface->wl_shell_surface->class);
 }
 
 static void handle_surface_commit(struct wl_listener *listener, void *data) {
 	struct roots_wl_shell_surface *roots_surface =
 		wl_container_of(listener, roots_surface, surface_commit);
-	struct roots_view *view = roots_surface->view;
+	struct roots_view *view = &roots_surface->view;
 	struct wlr_surface *wlr_surface = view->wlr_surface;
 
 	view_apply_damage(view);
@@ -197,13 +205,13 @@ static void handle_new_popup(struct wl_listener *listener, void *data) {
 	struct roots_wl_shell_surface *roots_surface =
 		wl_container_of(listener, roots_surface, new_popup);
 	struct wlr_wl_shell_surface *wlr_wl_shell_surface = data;
-	popup_create(roots_surface->view, wlr_wl_shell_surface);
+	popup_create(&roots_surface->view, wlr_wl_shell_surface);
 }
 
 static void handle_destroy(struct wl_listener *listener, void *data) {
 	struct roots_wl_shell_surface *roots_surface =
 		wl_container_of(listener, roots_surface, destroy);
-	view_destroy(roots_surface->view);
+	view_destroy(&roots_surface->view);
 }
 
 void handle_wl_shell_surface(struct wl_listener *listener, void *data) {
@@ -225,6 +233,12 @@ void handle_wl_shell_surface(struct wl_listener *listener, void *data) {
 	if (!roots_surface) {
 		return;
 	}
+
+	view_init(&roots_surface->view, &view_impl, ROOTS_WL_SHELL_VIEW, desktop);
+	roots_surface->view.box.width = surface->surface->current.width;
+	roots_surface->view.box.height = surface->surface->current.height;
+	roots_surface->wl_shell_surface = surface;
+
 	roots_surface->destroy.notify = handle_destroy;
 	wl_signal_add(&surface->events.destroy, &roots_surface->destroy);
 	roots_surface->new_popup.notify = handle_new_popup;
@@ -251,45 +265,40 @@ void handle_wl_shell_surface(struct wl_listener *listener, void *data) {
 	roots_surface->surface_commit.notify = handle_surface_commit;
 	wl_signal_add(&surface->surface->events.commit, &roots_surface->surface_commit);
 
-	struct roots_view *view = view_create(desktop);
-	if (!view) {
-		free(roots_surface);
-		return;
-	}
-	view->type = ROOTS_WL_SHELL_VIEW;
-	view->box.width = surface->surface->current.width;
-	view->box.height = surface->surface->current.height;
-
-	view->wl_shell_surface = surface;
-	view->roots_wl_shell_surface = roots_surface;
-	view->resize = resize;
-	view->close = close;
-	view->destroy = destroy;
-	roots_surface->view = view;
-
-	view_map(view, surface->surface);
-	view_setup(view);
+	view_map(&roots_surface->view, surface->surface);
+	view_setup(&roots_surface->view);
 
-	wlr_foreign_toplevel_handle_v1_set_title(view->toplevel_handle,
-			view->wl_shell_surface->title ?: "none");
-	wlr_foreign_toplevel_handle_v1_set_app_id(view->toplevel_handle,
-			view->wl_shell_surface->class ?: "none");
+	wlr_foreign_toplevel_handle_v1_set_title(roots_surface->view.toplevel_handle,
+		surface->title ?: "none");
+	wlr_foreign_toplevel_handle_v1_set_app_id(roots_surface->view.toplevel_handle,
+		surface->class ?: "none");
 
 	if (surface->state == WLR_WL_SHELL_SURFACE_STATE_TRANSIENT) {
 		// We need to map it relative to the parent
 		bool found = false;
 		struct roots_view *parent;
 		wl_list_for_each(parent, &desktop->views, link) {
-			if (parent->type == ROOTS_WL_SHELL_VIEW &&
-					parent->wl_shell_surface == surface->parent) {
+			if (parent->type != ROOTS_WL_SHELL_VIEW) {
+				continue;
+			}
+
+			struct roots_wl_shell_surface *parent_surf =
+				roots_wl_shell_surface_from_view(parent);
+			if (parent_surf->wl_shell_surface == surface->parent) {
 				found = true;
 				break;
 			}
 		}
 		if (found) {
-			view_move(view,
+			view_move(&roots_surface->view,
 				parent->box.x + surface->transient_state->x,
 				parent->box.y + surface->transient_state->y);
 		}
 	}
 }
+
+struct roots_wl_shell_surface *roots_wl_shell_surface_from_view(
+		struct roots_view *view) {
+	assert(view->impl == &view_impl);
+	return (struct roots_wl_shell_surface *)view;
+}
diff --git a/rootston/xdg_shell.c b/rootston/xdg_shell.c
index 918f90ab..5686b3d7 100644
--- a/rootston/xdg_shell.c
+++ b/rootston/xdg_shell.c
@@ -10,25 +10,28 @@
 #include "rootston/desktop.h"
 #include "rootston/input.h"
 #include "rootston/server.h"
+#include "rootston/view.h"
+
+static const struct roots_view_child_interface popup_impl;
 
 static void popup_destroy(struct roots_view_child *child) {
-	assert(child->destroy == popup_destroy);
+	assert(child->impl == &popup_impl);
 	struct roots_xdg_popup *popup = (struct roots_xdg_popup *)child;
-	if (popup == NULL) {
-		return;
-	}
 	wl_list_remove(&popup->destroy.link);
 	wl_list_remove(&popup->new_popup.link);
 	wl_list_remove(&popup->map.link);
 	wl_list_remove(&popup->unmap.link);
-	view_child_finish(&popup->view_child);
 	free(popup);
 }
 
+static const struct roots_view_child_interface popup_impl = {
+	.destroy = popup_destroy,
+};
+
 static void popup_handle_destroy(struct wl_listener *listener, void *data) {
 	struct roots_xdg_popup *popup =
 		wl_container_of(listener, popup, destroy);
-	popup_destroy((struct roots_view_child *)popup);
+	view_child_destroy(&popup->view_child);
 }
 
 static void popup_handle_map(struct wl_listener *listener, void *data) {
@@ -113,8 +116,8 @@ static struct roots_xdg_popup *popup_create(struct roots_view *view,
 		return NULL;
 	}
 	popup->wlr_popup = wlr_popup;
-	popup->view_child.destroy = popup_destroy;
-	view_child_init(&popup->view_child, view, wlr_popup->base->surface);
+	view_child_init(&popup->view_child, &popup_impl,
+		view, wlr_popup->base->surface);
 	popup->destroy.notify = popup_handle_destroy;
 	wl_signal_add(&wlr_popup->base->events.destroy, &popup->destroy);
 	popup->map.notify = popup_handle_map;
@@ -130,31 +133,31 @@ static struct roots_xdg_popup *popup_create(struct roots_view *view,
 }
 
 
-static void get_size(const struct roots_view *view, struct wlr_box *box) {
-	assert(view->type == ROOTS_XDG_SHELL_VIEW);
-	struct wlr_xdg_surface *surface = view->xdg_surface;
+static void get_size(struct roots_view *view, struct wlr_box *box) {
+	struct wlr_xdg_surface *xdg_surface =
+		roots_xdg_surface_from_view(view)->xdg_surface;
 
 	struct wlr_box geo_box;
-	wlr_xdg_surface_get_geometry(surface, &geo_box);
+	wlr_xdg_surface_get_geometry(xdg_surface, &geo_box);
 	box->width = geo_box.width;
 	box->height = geo_box.height;
 }
 
 static void activate(struct roots_view *view, bool active) {
-	assert(view->type == ROOTS_XDG_SHELL_VIEW);
-	struct wlr_xdg_surface *surface = view->xdg_surface;
-	if (surface->role == WLR_XDG_SURFACE_ROLE_TOPLEVEL) {
-		wlr_xdg_toplevel_set_activated(surface, active);
+	struct wlr_xdg_surface *xdg_surface =
+		roots_xdg_surface_from_view(view)->xdg_surface;
+	if (xdg_surface->role == WLR_XDG_SURFACE_ROLE_TOPLEVEL) {
+		wlr_xdg_toplevel_set_activated(xdg_surface, active);
 	}
 }
 
-static void apply_size_constraints(struct wlr_xdg_surface *surface,
+static void apply_size_constraints(struct wlr_xdg_surface *xdg_surface,
 		uint32_t width, uint32_t height, uint32_t *dest_width,
 		uint32_t *dest_height) {
 	*dest_width = width;
 	*dest_height = height;
 
-	struct wlr_xdg_toplevel_state *state = &surface->toplevel->current;
+	struct wlr_xdg_toplevel_state *state = &xdg_surface->toplevel->current;
 	if (width < state->min_width) {
 		*dest_width = state->min_width;
 	} else if (state->max_width > 0 &&
@@ -170,26 +173,26 @@ static void apply_size_constraints(struct wlr_xdg_surface *surface,
 }
 
 static void resize(struct roots_view *view, uint32_t width, uint32_t height) {
-	assert(view->type == ROOTS_XDG_SHELL_VIEW);
-	struct wlr_xdg_surface *surface = view->xdg_surface;
-	if (surface->role != WLR_XDG_SURFACE_ROLE_TOPLEVEL) {
+	struct wlr_xdg_surface *xdg_surface =
+		roots_xdg_surface_from_view(view)->xdg_surface;
+	if (xdg_surface->role != WLR_XDG_SURFACE_ROLE_TOPLEVEL) {
 		return;
 	}
 
 	uint32_t constrained_width, constrained_height;
-	apply_size_constraints(surface, width, height, &constrained_width,
+	apply_size_constraints(xdg_surface, width, height, &constrained_width,
 		&constrained_height);
 
-	wlr_xdg_toplevel_set_size(surface, constrained_width,
+	wlr_xdg_toplevel_set_size(xdg_surface, constrained_width,
 		constrained_height);
 }
 
 static void move_resize(struct roots_view *view, double x, double y,
 		uint32_t width, uint32_t height) {
-	assert(view->type == ROOTS_XDG_SHELL_VIEW);
-	struct roots_xdg_surface *roots_surface = view->roots_xdg_surface;
-	struct wlr_xdg_surface *surface = view->xdg_surface;
-	if (surface->role != WLR_XDG_SURFACE_ROLE_TOPLEVEL) {
+	struct roots_xdg_surface *xdg_surface =
+		roots_xdg_surface_from_view(view);
+	struct wlr_xdg_surface *wlr_xdg_surface = xdg_surface->xdg_surface;
+	if (wlr_xdg_surface->role != WLR_XDG_SURFACE_ROLE_TOPLEVEL) {
 		return;
 	}
 
@@ -197,7 +200,7 @@ static void move_resize(struct roots_view *view, double x, double y,
 	bool update_y = y != view->box.y;
 
 	uint32_t constrained_width, constrained_height;
-	apply_size_constraints(surface, width, height, &constrained_width,
+	apply_size_constraints(wlr_xdg_surface, width, height, &constrained_width,
 		&constrained_height);
 
 	if (update_x) {
@@ -214,48 +217,48 @@ static void move_resize(struct roots_view *view, double x, double y,
 	view->pending_move_resize.width = constrained_width;
 	view->pending_move_resize.height = constrained_height;
 
-	uint32_t serial = wlr_xdg_toplevel_set_size(surface, constrained_width,
-		constrained_height);
+	uint32_t serial = wlr_xdg_toplevel_set_size(wlr_xdg_surface,
+		constrained_width, constrained_height);
 	if (serial > 0) {
-		roots_surface->pending_move_resize_configure_serial = serial;
-	} else if (roots_surface->pending_move_resize_configure_serial == 0) {
+		xdg_surface->pending_move_resize_configure_serial = serial;
+	} else if (xdg_surface->pending_move_resize_configure_serial == 0) {
 		view_update_position(view, x, y);
 	}
 }
 
 static void maximize(struct roots_view *view, bool maximized) {
-	assert(view->type == ROOTS_XDG_SHELL_VIEW);
-	struct wlr_xdg_surface *surface = view->xdg_surface;
-	if (surface->role != WLR_XDG_SURFACE_ROLE_TOPLEVEL) {
+	struct wlr_xdg_surface *xdg_surface =
+		roots_xdg_surface_from_view(view)->xdg_surface;
+	if (xdg_surface->role != WLR_XDG_SURFACE_ROLE_TOPLEVEL) {
 		return;
 	}
 
-	wlr_xdg_toplevel_set_maximized(surface, maximized);
+	wlr_xdg_toplevel_set_maximized(xdg_surface, maximized);
 }
 
 static void set_fullscreen(struct roots_view *view, bool fullscreen) {
-	assert(view->type == ROOTS_XDG_SHELL_VIEW);
-	struct wlr_xdg_surface *surface = view->xdg_surface;
-	if (surface->role != WLR_XDG_SURFACE_ROLE_TOPLEVEL) {
+	struct wlr_xdg_surface *xdg_surface =
+		roots_xdg_surface_from_view(view)->xdg_surface;
+	if (xdg_surface->role != WLR_XDG_SURFACE_ROLE_TOPLEVEL) {
 		return;
 	}
 
-	wlr_xdg_toplevel_set_fullscreen(surface, fullscreen);
+	wlr_xdg_toplevel_set_fullscreen(xdg_surface, fullscreen);
 }
 
 static void close(struct roots_view *view) {
-	assert(view->type == ROOTS_XDG_SHELL_VIEW);
-	struct wlr_xdg_surface *surface = view->xdg_surface;
+	struct wlr_xdg_surface *xdg_surface =
+		roots_xdg_surface_from_view(view)->xdg_surface;
 	struct wlr_xdg_popup *popup = NULL;
-	wl_list_for_each(popup, &surface->popups, link) {
+	wl_list_for_each(popup, &xdg_surface->popups, link) {
 		wlr_xdg_popup_destroy(popup->base);
 	}
-	wlr_xdg_toplevel_send_close(surface);
+	wlr_xdg_toplevel_send_close(xdg_surface);
 }
 
 static void destroy(struct roots_view *view) {
-	assert(view->type == ROOTS_XDG_SHELL_VIEW);
-	struct roots_xdg_surface *roots_xdg_surface = view->roots_xdg_surface;
+	struct roots_xdg_surface *roots_xdg_surface =
+		roots_xdg_surface_from_view(view);
 	wl_list_remove(&roots_xdg_surface->surface_commit.link);
 	wl_list_remove(&roots_xdg_surface->destroy.link);
 	wl_list_remove(&roots_xdg_surface->new_popup.link);
@@ -267,14 +270,24 @@ static void destroy(struct roots_view *view) {
 	wl_list_remove(&roots_xdg_surface->request_fullscreen.link);
 	wl_list_remove(&roots_xdg_surface->set_title.link);
 	wl_list_remove(&roots_xdg_surface->set_app_id.link);
-	roots_xdg_surface->view->xdg_surface->data = NULL;
+	roots_xdg_surface->xdg_surface->data = NULL;
 	free(roots_xdg_surface);
 }
 
+static const struct roots_view_interface view_impl = {
+	.activate = activate,
+	.resize = resize,
+	.move_resize = move_resize,
+	.maximize = maximize,
+	.set_fullscreen = set_fullscreen,
+	.close = close,
+	.destroy = destroy,
+};
+
 static void handle_request_move(struct wl_listener *listener, void *data) {
 	struct roots_xdg_surface *roots_xdg_surface =
 		wl_container_of(listener, roots_xdg_surface, request_move);
-	struct roots_view *view = roots_xdg_surface->view;
+	struct roots_view *view = &roots_xdg_surface->view;
 	struct roots_input *input = view->desktop->server->input;
 	struct wlr_xdg_toplevel_move_event *e = data;
 	struct roots_seat *seat = input_seat_from_wlr_seat(input, e->seat->seat);
@@ -288,7 +301,7 @@ static void handle_request_move(struct wl_listener *listener, void *data) {
 static void handle_request_resize(struct wl_listener *listener, void *data) {
 	struct roots_xdg_surface *roots_xdg_surface =
 		wl_container_of(listener, roots_xdg_surface, request_resize);
-	struct roots_view *view = roots_xdg_surface->view;
+	struct roots_view *view = &roots_xdg_surface->view;
 	struct roots_input *input = view->desktop->server->input;
 	struct wlr_xdg_toplevel_resize_event *e = data;
 	// TODO verify event serial
@@ -303,8 +316,8 @@ static void handle_request_resize(struct wl_listener *listener, void *data) {
 static void handle_request_maximize(struct wl_listener *listener, void *data) {
 	struct roots_xdg_surface *roots_xdg_surface =
 		wl_container_of(listener, roots_xdg_surface, request_maximize);
-	struct roots_view *view = roots_xdg_surface->view;
-	struct wlr_xdg_surface *surface = view->xdg_surface;
+	struct roots_view *view = &roots_xdg_surface->view;
+	struct wlr_xdg_surface *surface = roots_xdg_surface->xdg_surface;
 
 	if (surface->role != WLR_XDG_SURFACE_ROLE_TOPLEVEL) {
 		return;
@@ -317,8 +330,8 @@ static void handle_request_fullscreen(struct wl_listener *listener,
 		void *data) {
 	struct roots_xdg_surface *roots_xdg_surface =
 		wl_container_of(listener, roots_xdg_surface, request_fullscreen);
-	struct roots_view *view = roots_xdg_surface->view;
-	struct wlr_xdg_surface *surface = view->xdg_surface;
+	struct roots_view *view = &roots_xdg_surface->view;
+	struct wlr_xdg_surface *surface = roots_xdg_surface->xdg_surface;
 	struct wlr_xdg_toplevel_set_fullscreen_event *e = data;
 
 	if (surface->role != WLR_XDG_SURFACE_ROLE_TOPLEVEL) {
@@ -332,23 +345,23 @@ static void handle_set_title(struct wl_listener *listener, void *data) {
 	struct roots_xdg_surface *roots_xdg_surface =
 		wl_container_of(listener, roots_xdg_surface, set_title);
 
-	view_set_title(roots_xdg_surface->view,
-			roots_xdg_surface->view->xdg_surface->toplevel->title);
+	view_set_title(&roots_xdg_surface->view,
+			roots_xdg_surface->xdg_surface->toplevel->title);
 }
 
 static void handle_set_app_id(struct wl_listener *listener, void *data) {
 	struct roots_xdg_surface *roots_xdg_surface =
 		wl_container_of(listener, roots_xdg_surface, set_app_id);
 
-	view_set_app_id(roots_xdg_surface->view,
-			roots_xdg_surface->view->xdg_surface->toplevel->app_id);
+	view_set_app_id(&roots_xdg_surface->view,
+			roots_xdg_surface->xdg_surface->toplevel->app_id);
 }
 
 static void handle_surface_commit(struct wl_listener *listener, void *data) {
 	struct roots_xdg_surface *roots_surface =
 		wl_container_of(listener, roots_surface, surface_commit);
-	struct roots_view *view = roots_surface->view;
-	struct wlr_xdg_surface *surface = view->xdg_surface;
+	struct roots_view *view = &roots_surface->view;
+	struct wlr_xdg_surface *surface = roots_surface->xdg_surface;
 
 	if (!surface->mapped) {
 		return;
@@ -385,38 +398,38 @@ static void handle_new_popup(struct wl_listener *listener, void *data) {
 	struct roots_xdg_surface *roots_xdg_surface =
 		wl_container_of(listener, roots_xdg_surface, new_popup);
 	struct wlr_xdg_popup *wlr_popup = data;
-	popup_create(roots_xdg_surface->view, wlr_popup);
+	popup_create(&roots_xdg_surface->view, wlr_popup);
 }
 
 static void handle_map(struct wl_listener *listener, void *data) {
 	struct roots_xdg_surface *roots_xdg_surface =
 		wl_container_of(listener, roots_xdg_surface, map);
-	struct roots_view *view = roots_xdg_surface->view;
+	struct roots_view *view = &roots_xdg_surface->view;
 
 	struct wlr_box box;
 	get_size(view, &box);
 	view->box.width = box.width;
 	view->box.height = box.height;
 
-	view_map(view, view->xdg_surface->surface);
+	view_map(view, roots_xdg_surface->xdg_surface->surface);
 	view_setup(view);
 
 	wlr_foreign_toplevel_handle_v1_set_title(view->toplevel_handle,
-			view->xdg_surface->toplevel->title ?: "none");
+			roots_xdg_surface->xdg_surface->toplevel->title ?: "none");
 	wlr_foreign_toplevel_handle_v1_set_app_id(view->toplevel_handle,
-			view->xdg_surface->toplevel->app_id ?: "none");
+			roots_xdg_surface->xdg_surface->toplevel->app_id ?: "none");
 }
 
 static void handle_unmap(struct wl_listener *listener, void *data) {
 	struct roots_xdg_surface *roots_xdg_surface =
 		wl_container_of(listener, roots_xdg_surface, unmap);
-	view_unmap(roots_xdg_surface->view);
+	view_unmap(&roots_xdg_surface->view);
 }
 
 static void handle_destroy(struct wl_listener *listener, void *data) {
 	struct roots_xdg_surface *roots_xdg_surface =
 		wl_container_of(listener, roots_xdg_surface, destroy);
-	view_destroy(roots_xdg_surface->view);
+	view_destroy(&roots_xdg_surface->view);
 }
 
 void handle_xdg_shell_surface(struct wl_listener *listener, void *data) {
@@ -440,6 +453,11 @@ void handle_xdg_shell_surface(struct wl_listener *listener, void *data) {
 	if (!roots_surface) {
 		return;
 	}
+
+	view_init(&roots_surface->view, &view_impl, ROOTS_XDG_SHELL_VIEW, desktop);
+	roots_surface->xdg_surface = surface;
+	surface->data = roots_surface;
+
 	roots_surface->surface_commit.notify = handle_surface_commit;
 	wl_signal_add(&surface->surface->events.commit,
 		&roots_surface->surface_commit);
@@ -468,43 +486,16 @@ void handle_xdg_shell_surface(struct wl_listener *listener, void *data) {
 			&roots_surface->set_app_id);
 	roots_surface->new_popup.notify = handle_new_popup;
 	wl_signal_add(&surface->events.new_popup, &roots_surface->new_popup);
-	surface->data = roots_surface;
-
-	struct roots_view *view = view_create(desktop);
-	if (!view) {
-		free(roots_surface);
-		return;
-	}
-	view->type = ROOTS_XDG_SHELL_VIEW;
-
-	view->xdg_surface = surface;
-	view->roots_xdg_surface = roots_surface;
-	view->activate = activate;
-	view->resize = resize;
-	view->move_resize = move_resize;
-	view->maximize = maximize;
-	view->set_fullscreen = set_fullscreen;
-	view->close = close;
-	view->destroy = destroy;
-	roots_surface->view = view;
-
-	if (surface->toplevel->client_pending.maximized) {
-		view_maximize(view, true);
-	}
-	if (surface->toplevel->client_pending.fullscreen) {
-		view_set_fullscreen(view, true, NULL);
-	}
 }
 
 
-
 static void decoration_handle_destroy(struct wl_listener *listener,
 		void *data) {
 	struct roots_xdg_toplevel_decoration *decoration =
 		wl_container_of(listener, decoration, destroy);
 
 	decoration->surface->xdg_toplevel_decoration = NULL;
-	view_update_decorated(decoration->surface->view, false);
+	view_update_decorated(&decoration->surface->view, false);
 	wl_list_remove(&decoration->destroy.link);
 	wl_list_remove(&decoration->request_mode.link);
 	wl_list_remove(&decoration->surface_commit.link);
@@ -531,7 +522,7 @@ static void decoration_handle_surface_commit(struct wl_listener *listener,
 
 	bool decorated = decoration->wlr_decoration->current_mode ==
 		WLR_XDG_TOPLEVEL_DECORATION_V1_MODE_SERVER_SIDE;
-	view_update_decorated(decoration->surface->view, decorated);
+	view_update_decorated(&decoration->surface->view, decorated);
 }
 
 void handle_xdg_toplevel_decoration(struct wl_listener *listener, void *data) {
@@ -541,7 +532,7 @@ void handle_xdg_toplevel_decoration(struct wl_listener *listener, void *data) {
 
 	struct roots_xdg_surface *xdg_surface = wlr_decoration->surface->data;
 	assert(xdg_surface != NULL);
-	struct wlr_xdg_surface *wlr_xdg_surface = xdg_surface->view->xdg_surface;
+	struct wlr_xdg_surface *wlr_xdg_surface = xdg_surface->xdg_surface;
 
 	struct roots_xdg_toplevel_decoration *decoration =
 		calloc(1, sizeof(struct roots_xdg_toplevel_decoration));
@@ -563,3 +554,8 @@ void handle_xdg_toplevel_decoration(struct wl_listener *listener, void *data) {
 
 	decoration_handle_request_mode(&decoration->request_mode, wlr_decoration);
 }
+
+struct roots_xdg_surface *roots_xdg_surface_from_view(struct roots_view *view) {
+	assert(view->impl == &view_impl);
+	return (struct roots_xdg_surface *)view;
+}
diff --git a/rootston/xdg_shell_v6.c b/rootston/xdg_shell_v6.c
index 8d989aef..4d6a7242 100644
--- a/rootston/xdg_shell_v6.c
+++ b/rootston/xdg_shell_v6.c
@@ -10,24 +10,26 @@
 #include "rootston/input.h"
 #include "rootston/server.h"
 
+static const struct roots_view_child_interface popup_impl;
+
 static void popup_destroy(struct roots_view_child *child) {
-	assert(child->destroy == popup_destroy);
+	assert(child->impl == &popup_impl);
 	struct roots_xdg_popup_v6 *popup = (struct roots_xdg_popup_v6 *)child;
-	if (popup == NULL) {
-		return;
-	}
 	wl_list_remove(&popup->destroy.link);
 	wl_list_remove(&popup->new_popup.link);
 	wl_list_remove(&popup->map.link);
 	wl_list_remove(&popup->unmap.link);
-	view_child_finish(&popup->view_child);
 	free(popup);
 }
 
+static const struct roots_view_child_interface popup_impl = {
+	.destroy = popup_destroy,
+};
+
 static void popup_handle_destroy(struct wl_listener *listener, void *data) {
 	struct roots_xdg_popup_v6 *popup =
 		wl_container_of(listener, popup, destroy);
-	popup_destroy((struct roots_view_child *)popup);
+	view_child_destroy(&popup->view_child);
 }
 
 static void popup_handle_map(struct wl_listener *listener, void *data) {
@@ -113,8 +115,8 @@ static struct roots_xdg_popup_v6 *popup_create(struct roots_view *view,
 		return NULL;
 	}
 	popup->wlr_popup = wlr_popup;
-	popup->view_child.destroy = popup_destroy;
-	view_child_init(&popup->view_child, view, wlr_popup->base->surface);
+	view_child_init(&popup->view_child, &popup_impl,
+		view, wlr_popup->base->surface);
 	popup->destroy.notify = popup_handle_destroy;
 	wl_signal_add(&wlr_popup->base->events.destroy, &popup->destroy);
 	popup->map.notify = popup_handle_map;
@@ -130,9 +132,9 @@ static struct roots_xdg_popup_v6 *popup_create(struct roots_view *view,
 }
 
 
-static void get_size(const struct roots_view *view, struct wlr_box *box) {
-	assert(view->type == ROOTS_XDG_SHELL_V6_VIEW);
-	struct wlr_xdg_surface_v6 *surface = view->xdg_surface_v6;
+static void get_size(struct roots_view *view, struct wlr_box *box) {
+	struct wlr_xdg_surface_v6 *surface =
+		roots_xdg_surface_v6_from_view(view)->xdg_surface_v6;
 
 	struct wlr_box geo_box;
 	wlr_xdg_surface_v6_get_geometry(surface, &geo_box);
@@ -141,8 +143,8 @@ static void get_size(const struct roots_view *view, struct wlr_box *box) {
 }
 
 static void activate(struct roots_view *view, bool active) {
-	assert(view->type == ROOTS_XDG_SHELL_V6_VIEW);
-	struct wlr_xdg_surface_v6 *surface = view->xdg_surface_v6;
+	struct wlr_xdg_surface_v6 *surface =
+		roots_xdg_surface_v6_from_view(view)->xdg_surface_v6;
 	if (surface->role == WLR_XDG_SURFACE_V6_ROLE_TOPLEVEL) {
 		wlr_xdg_toplevel_v6_set_activated(surface, active);
 	}
@@ -170,8 +172,8 @@ static void apply_size_constraints(struct wlr_xdg_surface_v6 *surface,
 }
 
 static void resize(struct roots_view *view, uint32_t width, uint32_t height) {
-	assert(view->type == ROOTS_XDG_SHELL_V6_VIEW);
-	struct wlr_xdg_surface_v6 *surface = view->xdg_surface_v6;
+	struct wlr_xdg_surface_v6 *surface =
+		roots_xdg_surface_v6_from_view(view)->xdg_surface_v6;
 	if (surface->role != WLR_XDG_SURFACE_V6_ROLE_TOPLEVEL) {
 		return;
 	}
@@ -186,9 +188,9 @@ static void resize(struct roots_view *view, uint32_t width, uint32_t height) {
 
 static void move_resize(struct roots_view *view, double x, double y,
 		uint32_t width, uint32_t height) {
-	assert(view->type == ROOTS_XDG_SHELL_V6_VIEW);
-	struct roots_xdg_surface_v6 *roots_surface = view->roots_xdg_surface_v6;
-	struct wlr_xdg_surface_v6 *surface = view->xdg_surface_v6;
+	struct roots_xdg_surface_v6 *roots_surface =
+		roots_xdg_surface_v6_from_view(view);
+	struct wlr_xdg_surface_v6 *surface = roots_surface->xdg_surface_v6;
 	if (surface->role != WLR_XDG_SURFACE_V6_ROLE_TOPLEVEL) {
 		return;
 	}
@@ -224,8 +226,8 @@ static void move_resize(struct roots_view *view, double x, double y,
 }
 
 static void maximize(struct roots_view *view, bool maximized) {
-	assert(view->type == ROOTS_XDG_SHELL_V6_VIEW);
-	struct wlr_xdg_surface_v6 *surface = view->xdg_surface_v6;
+	struct wlr_xdg_surface_v6 *surface =
+		roots_xdg_surface_v6_from_view(view)->xdg_surface_v6;
 	if (surface->role != WLR_XDG_SURFACE_V6_ROLE_TOPLEVEL) {
 		return;
 	}
@@ -234,8 +236,8 @@ static void maximize(struct roots_view *view, bool maximized) {
 }
 
 static void set_fullscreen(struct roots_view *view, bool fullscreen) {
-	assert(view->type == ROOTS_XDG_SHELL_V6_VIEW);
-	struct wlr_xdg_surface_v6 *surface = view->xdg_surface_v6;
+	struct wlr_xdg_surface_v6 *surface =
+		roots_xdg_surface_v6_from_view(view)->xdg_surface_v6;
 	if (surface->role != WLR_XDG_SURFACE_V6_ROLE_TOPLEVEL) {
 		return;
 	}
@@ -244,8 +246,8 @@ static void set_fullscreen(struct roots_view *view, bool fullscreen) {
 }
 
 static void close(struct roots_view *view) {
-	assert(view->type == ROOTS_XDG_SHELL_V6_VIEW);
-	struct wlr_xdg_surface_v6 *surface = view->xdg_surface_v6;
+	struct wlr_xdg_surface_v6 *surface =
+		roots_xdg_surface_v6_from_view(view)->xdg_surface_v6;
 	struct wlr_xdg_popup_v6 *popup = NULL;
 	wl_list_for_each(popup, &surface->popups, link) {
 		wlr_xdg_surface_v6_send_close(popup->base);
@@ -254,8 +256,8 @@ static void close(struct roots_view *view) {
 }
 
 static void destroy(struct roots_view *view) {
-	assert(view->type == ROOTS_XDG_SHELL_V6_VIEW);
-	struct roots_xdg_surface_v6 *roots_xdg_surface = view->roots_xdg_surface_v6;
+	struct roots_xdg_surface_v6 *roots_xdg_surface =
+		roots_xdg_surface_v6_from_view(view);
 	wl_list_remove(&roots_xdg_surface->surface_commit.link);
 	wl_list_remove(&roots_xdg_surface->destroy.link);
 	wl_list_remove(&roots_xdg_surface->new_popup.link);
@@ -270,10 +272,20 @@ static void destroy(struct roots_view *view) {
 	free(roots_xdg_surface);
 }
 
+static const struct roots_view_interface view_impl = {
+	.activate = activate,
+	.resize = resize,
+	.move_resize = move_resize,
+	.maximize = maximize,
+	.set_fullscreen = set_fullscreen,
+	.close = close,
+	.destroy = destroy,
+};
+
 static void handle_request_move(struct wl_listener *listener, void *data) {
 	struct roots_xdg_surface_v6 *roots_xdg_surface =
 		wl_container_of(listener, roots_xdg_surface, request_move);
-	struct roots_view *view = roots_xdg_surface->view;
+	struct roots_view *view = &roots_xdg_surface->view;
 	struct roots_input *input = view->desktop->server->input;
 	struct wlr_xdg_toplevel_v6_move_event *e = data;
 	struct roots_seat *seat = input_seat_from_wlr_seat(input, e->seat->seat);
@@ -287,7 +299,7 @@ static void handle_request_move(struct wl_listener *listener, void *data) {
 static void handle_request_resize(struct wl_listener *listener, void *data) {
 	struct roots_xdg_surface_v6 *roots_xdg_surface =
 		wl_container_of(listener, roots_xdg_surface, request_resize);
-	struct roots_view *view = roots_xdg_surface->view;
+	struct roots_view *view = &roots_xdg_surface->view;
 	struct roots_input *input = view->desktop->server->input;
 	struct wlr_xdg_toplevel_v6_resize_event *e = data;
 	// TODO verify event serial
@@ -302,8 +314,8 @@ static void handle_request_resize(struct wl_listener *listener, void *data) {
 static void handle_request_maximize(struct wl_listener *listener, void *data) {
 	struct roots_xdg_surface_v6 *roots_xdg_surface =
 		wl_container_of(listener, roots_xdg_surface, request_maximize);
-	struct roots_view *view = roots_xdg_surface->view;
-	struct wlr_xdg_surface_v6 *surface = view->xdg_surface_v6;
+	struct roots_view *view = &roots_xdg_surface->view;
+	struct wlr_xdg_surface_v6 *surface = roots_xdg_surface->xdg_surface_v6;
 
 	if (surface->role != WLR_XDG_SURFACE_V6_ROLE_TOPLEVEL) {
 		return;
@@ -316,8 +328,8 @@ static void handle_request_fullscreen(struct wl_listener *listener,
 		void *data) {
 	struct roots_xdg_surface_v6 *roots_xdg_surface =
 		wl_container_of(listener, roots_xdg_surface, request_fullscreen);
-	struct roots_view *view = roots_xdg_surface->view;
-	struct wlr_xdg_surface_v6 *surface = view->xdg_surface_v6;
+	struct roots_view *view = &roots_xdg_surface->view;
+	struct wlr_xdg_surface_v6 *surface = roots_xdg_surface->xdg_surface_v6;
 	struct wlr_xdg_toplevel_v6_set_fullscreen_event *e = data;
 
 	if (surface->role != WLR_XDG_SURFACE_V6_ROLE_TOPLEVEL) {
@@ -331,23 +343,23 @@ static void handle_set_title(struct wl_listener *listener, void *data) {
 	struct roots_xdg_surface_v6 *roots_xdg_surface =
 		wl_container_of(listener, roots_xdg_surface, set_title);
 
-	view_set_title(roots_xdg_surface->view,
-			roots_xdg_surface->view->xdg_surface_v6->toplevel->title);
+	view_set_title(&roots_xdg_surface->view,
+		roots_xdg_surface->xdg_surface_v6->toplevel->title);
 }
 
 static void handle_set_app_id(struct wl_listener *listener, void *data) {
 	struct roots_xdg_surface_v6 *roots_xdg_surface =
 		wl_container_of(listener, roots_xdg_surface, set_app_id);
 
-	view_set_app_id(roots_xdg_surface->view,
-			roots_xdg_surface->view->xdg_surface_v6->toplevel->app_id);
+	view_set_app_id(&roots_xdg_surface->view,
+		roots_xdg_surface->xdg_surface_v6->toplevel->app_id);
 }
 
 static void handle_surface_commit(struct wl_listener *listener, void *data) {
 	struct roots_xdg_surface_v6 *roots_surface =
 		wl_container_of(listener, roots_surface, surface_commit);
-	struct roots_view *view = roots_surface->view;
-	struct wlr_xdg_surface_v6 *surface = view->xdg_surface_v6;
+	struct roots_view *view = &roots_surface->view;
+	struct wlr_xdg_surface_v6 *surface = roots_surface->xdg_surface_v6;
 
 	if (!surface->mapped) {
 		return;
@@ -384,38 +396,38 @@ static void handle_new_popup(struct wl_listener *listener, void *data) {
 	struct roots_xdg_surface_v6 *roots_xdg_surface =
 		wl_container_of(listener, roots_xdg_surface, new_popup);
 	struct wlr_xdg_popup_v6 *wlr_popup = data;
-	popup_create(roots_xdg_surface->view, wlr_popup);
+	popup_create(&roots_xdg_surface->view, wlr_popup);
 }
 
 static void handle_map(struct wl_listener *listener, void *data) {
 	struct roots_xdg_surface_v6 *roots_xdg_surface =
 		wl_container_of(listener, roots_xdg_surface, map);
-	struct roots_view *view = roots_xdg_surface->view;
+	struct roots_view *view = &roots_xdg_surface->view;
 
 	struct wlr_box box;
 	get_size(view, &box);
 	view->box.width = box.width;
 	view->box.height = box.height;
 
-	view_map(view, view->xdg_surface_v6->surface);
+	view_map(view, roots_xdg_surface->xdg_surface_v6->surface);
 	view_setup(view);
 
 	wlr_foreign_toplevel_handle_v1_set_title(view->toplevel_handle,
-			view->xdg_surface_v6->toplevel->title ?: "none");
+		roots_xdg_surface->xdg_surface_v6->toplevel->title ?: "none");
 	wlr_foreign_toplevel_handle_v1_set_app_id(view->toplevel_handle,
-			view->xdg_surface_v6->toplevel->app_id ?: "none");
+		roots_xdg_surface->xdg_surface_v6->toplevel->app_id ?: "none");
 }
 
 static void handle_unmap(struct wl_listener *listener, void *data) {
 	struct roots_xdg_surface_v6 *roots_xdg_surface =
 		wl_container_of(listener, roots_xdg_surface, unmap);
-	view_unmap(roots_xdg_surface->view);
+	view_unmap(&roots_xdg_surface->view);
 }
 
 static void handle_destroy(struct wl_listener *listener, void *data) {
 	struct roots_xdg_surface_v6 *roots_xdg_surface =
 		wl_container_of(listener, roots_xdg_surface, destroy);
-	view_destroy(roots_xdg_surface->view);
+	view_destroy(&roots_xdg_surface->view);
 }
 
 void handle_xdg_shell_v6_surface(struct wl_listener *listener, void *data) {
@@ -439,6 +451,10 @@ void handle_xdg_shell_v6_surface(struct wl_listener *listener, void *data) {
 	if (!roots_surface) {
 		return;
 	}
+
+	view_init(&roots_surface->view, &view_impl, ROOTS_XDG_SHELL_V6_VIEW, desktop);
+	roots_surface->xdg_surface_v6 = surface;
+
 	roots_surface->surface_commit.notify = handle_surface_commit;
 	wl_signal_add(&surface->surface->events.commit,
 		&roots_surface->surface_commit);
@@ -461,35 +477,17 @@ void handle_xdg_shell_v6_surface(struct wl_listener *listener, void *data) {
 	wl_signal_add(&surface->toplevel->events.request_fullscreen,
 		&roots_surface->request_fullscreen);
 	roots_surface->set_title.notify = handle_set_title;
-	wl_signal_add(&surface->toplevel->events.set_title, &roots_surface->set_title);
+	wl_signal_add(&surface->toplevel->events.set_title,
+		&roots_surface->set_title);
 	roots_surface->set_app_id.notify = handle_set_app_id;
 	wl_signal_add(&surface->toplevel->events.set_app_id,
 			&roots_surface->set_app_id);
 	roots_surface->new_popup.notify = handle_new_popup;
 	wl_signal_add(&surface->events.new_popup, &roots_surface->new_popup);
+}
 
-	struct roots_view *view = view_create(desktop);
-	if (!view) {
-		free(roots_surface);
-		return;
-	}
-	view->type = ROOTS_XDG_SHELL_V6_VIEW;
-
-	view->xdg_surface_v6 = surface;
-	view->roots_xdg_surface_v6 = roots_surface;
-	view->activate = activate;
-	view->resize = resize;
-	view->move_resize = move_resize;
-	view->maximize = maximize;
-	view->set_fullscreen = set_fullscreen;
-	view->close = close;
-	view->destroy = destroy;
-	roots_surface->view = view;
-
-	if (surface->toplevel->client_pending.maximized) {
-		view_maximize(view, true);
-	}
-	if (surface->toplevel->client_pending.fullscreen) {
-		view_set_fullscreen(view, true, NULL);
-	}
+struct roots_xdg_surface_v6 *roots_xdg_surface_v6_from_view(
+		struct roots_view *view) {
+	assert(view->impl == &view_impl);
+	return (struct roots_xdg_surface_v6 *)view;
 }
diff --git a/rootston/xwayland.c b/rootston/xwayland.c
index f3f962e8..77a7ba12 100644
--- a/rootston/xwayland.c
+++ b/rootston/xwayland.c
@@ -11,13 +11,14 @@
 #include "rootston/server.h"
 
 static void activate(struct roots_view *view, bool active) {
-	assert(view->type == ROOTS_XWAYLAND_VIEW);
-	wlr_xwayland_surface_activate(view->xwayland_surface, active);
+	struct wlr_xwayland_surface *xwayland_surface =
+		roots_xwayland_surface_from_view(view)->xwayland_surface;
+	wlr_xwayland_surface_activate(xwayland_surface, active);
 }
 
 static void move(struct roots_view *view, double x, double y) {
-	assert(view->type == ROOTS_XWAYLAND_VIEW);
-	struct wlr_xwayland_surface *xwayland_surface = view->xwayland_surface;
+	struct wlr_xwayland_surface *xwayland_surface =
+		roots_xwayland_surface_from_view(view)->xwayland_surface;
 	view_update_position(view, x, y);
 	wlr_xwayland_surface_configure(xwayland_surface, x, y,
 		xwayland_surface->width, xwayland_surface->height);
@@ -48,8 +49,8 @@ static void apply_size_constraints(
 }
 
 static void resize(struct roots_view *view, uint32_t width, uint32_t height) {
-	assert(view->type == ROOTS_XWAYLAND_VIEW);
-	struct wlr_xwayland_surface *xwayland_surface = view->xwayland_surface;
+	struct wlr_xwayland_surface *xwayland_surface =
+		roots_xwayland_surface_from_view(view)->xwayland_surface;
 
 	uint32_t constrained_width, constrained_height;
 	apply_size_constraints(xwayland_surface, width, height, &constrained_width,
@@ -61,8 +62,8 @@ static void resize(struct roots_view *view, uint32_t width, uint32_t height) {
 
 static void move_resize(struct roots_view *view, double x, double y,
 		uint32_t width, uint32_t height) {
-	assert(view->type == ROOTS_XWAYLAND_VIEW);
-	struct wlr_xwayland_surface *xwayland_surface = view->xwayland_surface;
+	struct wlr_xwayland_surface *xwayland_surface =
+		roots_xwayland_surface_from_view(view)->xwayland_surface;
 
 	bool update_x = x != view->box.x;
 	bool update_y = y != view->box.y;
@@ -90,25 +91,26 @@ static void move_resize(struct roots_view *view, double x, double y,
 }
 
 static void close(struct roots_view *view) {
-	assert(view->type == ROOTS_XWAYLAND_VIEW);
-	wlr_xwayland_surface_close(view->xwayland_surface);
+	struct wlr_xwayland_surface *xwayland_surface =
+		roots_xwayland_surface_from_view(view)->xwayland_surface;
+	wlr_xwayland_surface_close(xwayland_surface);
 }
 
 static void maximize(struct roots_view *view, bool maximized) {
-	assert(view->type == ROOTS_XWAYLAND_VIEW);
-
-	wlr_xwayland_surface_set_maximized(view->xwayland_surface, maximized);
+	struct wlr_xwayland_surface *xwayland_surface =
+		roots_xwayland_surface_from_view(view)->xwayland_surface;
+	wlr_xwayland_surface_set_maximized(xwayland_surface, maximized);
 }
 
 static void set_fullscreen(struct roots_view *view, bool fullscreen) {
-	assert(view->type == ROOTS_XWAYLAND_VIEW);
-
-	wlr_xwayland_surface_set_fullscreen(view->xwayland_surface, fullscreen);
+	struct wlr_xwayland_surface *xwayland_surface =
+		roots_xwayland_surface_from_view(view)->xwayland_surface;
+	wlr_xwayland_surface_set_fullscreen(xwayland_surface, fullscreen);
 }
 
 static void destroy(struct roots_view *view) {
-	assert(view->type == ROOTS_XWAYLAND_VIEW);
-	struct roots_xwayland_surface *roots_surface = view->roots_xwayland_surface;
+	struct roots_xwayland_surface *roots_surface =
+		roots_xwayland_surface_from_view(view);
 	wl_list_remove(&roots_surface->destroy.link);
 	wl_list_remove(&roots_surface->request_configure.link);
 	wl_list_remove(&roots_surface->request_move.link);
@@ -121,20 +123,31 @@ static void destroy(struct roots_view *view) {
 	free(roots_surface);
 }
 
+static const struct roots_view_interface view_impl = {
+	.activate = activate,
+	.resize = resize,
+	.move = move,
+	.move_resize = move_resize,
+	.maximize = maximize,
+	.set_fullscreen = set_fullscreen,
+	.close = close,
+	.destroy = destroy,
+};
+
 static void handle_destroy(struct wl_listener *listener, void *data) {
 	struct roots_xwayland_surface *roots_surface =
 		wl_container_of(listener, roots_surface, destroy);
-	view_destroy(roots_surface->view);
+	view_destroy(&roots_surface->view);
 }
 
 static void handle_request_configure(struct wl_listener *listener, void *data) {
 	struct roots_xwayland_surface *roots_surface =
 		wl_container_of(listener, roots_surface, request_configure);
 	struct wlr_xwayland_surface *xwayland_surface =
-		roots_surface->view->xwayland_surface;
+		roots_surface->xwayland_surface;
 	struct wlr_xwayland_surface_configure_event *event = data;
 
-	view_update_position(roots_surface->view, event->x, event->y);
+	view_update_position(&roots_surface->view, event->x, event->y);
 
 	wlr_xwayland_surface_configure(xwayland_surface, event->x, event->y,
 		event->width, event->height);
@@ -156,7 +169,7 @@ static struct roots_seat *guess_seat_for_view(struct roots_view *view) {
 static void handle_request_move(struct wl_listener *listener, void *data) {
 	struct roots_xwayland_surface *roots_surface =
 		wl_container_of(listener, roots_surface, request_move);
-	struct roots_view *view = roots_surface->view;
+	struct roots_view *view = &roots_surface->view;
 	struct roots_seat *seat = guess_seat_for_view(view);
 
 	if (!seat || seat->cursor->mode != ROOTS_CURSOR_PASSTHROUGH) {
@@ -169,7 +182,7 @@ static void handle_request_move(struct wl_listener *listener, void *data) {
 static void handle_request_resize(struct wl_listener *listener, void *data) {
 	struct roots_xwayland_surface *roots_surface =
 		wl_container_of(listener, roots_surface, request_resize);
-	struct roots_view *view = roots_surface->view;
+	struct roots_view *view = &roots_surface->view;
 	struct roots_seat *seat = guess_seat_for_view(view);
 	struct wlr_xwayland_resize_event *e = data;
 
@@ -182,8 +195,9 @@ static void handle_request_resize(struct wl_listener *listener, void *data) {
 static void handle_request_maximize(struct wl_listener *listener, void *data) {
 	struct roots_xwayland_surface *roots_surface =
 		wl_container_of(listener, roots_surface, request_maximize);
-	struct roots_view *view = roots_surface->view;
-	struct wlr_xwayland_surface *xwayland_surface = view->xwayland_surface;
+	struct roots_view *view = &roots_surface->view;
+	struct wlr_xwayland_surface *xwayland_surface =
+		roots_surface->xwayland_surface;
 
 	bool maximized = xwayland_surface->maximized_vert &&
 		xwayland_surface->maximized_horz;
@@ -194,8 +208,9 @@ static void handle_request_fullscreen(struct wl_listener *listener,
 		void *data) {
 	struct roots_xwayland_surface *roots_surface =
 		wl_container_of(listener, roots_surface, request_fullscreen);
-	struct roots_view *view = roots_surface->view;
-	struct wlr_xwayland_surface *xwayland_surface = view->xwayland_surface;
+	struct roots_view *view = &roots_surface->view;
+	struct wlr_xwayland_surface *xwayland_surface =
+		roots_surface->xwayland_surface;
 
 	view_set_fullscreen(view, xwayland_surface->fullscreen, NULL);
 }
@@ -204,22 +219,22 @@ static void handle_set_title(struct wl_listener *listener, void *data) {
 	struct roots_xwayland_surface *roots_surface =
 		wl_container_of(listener, roots_surface, set_title);
 
-	view_set_title(roots_surface->view,
-			roots_surface->view->xwayland_surface->title);
+	view_set_title(&roots_surface->view,
+		roots_surface->xwayland_surface->title);
 }
 
 static void handle_set_class(struct wl_listener *listener, void *data) {
 	struct roots_xwayland_surface *roots_surface =
 		wl_container_of(listener, roots_surface, set_class);
 
-	view_set_app_id(roots_surface->view,
-			roots_surface->view->xwayland_surface->class);
+	view_set_app_id(&roots_surface->view,
+		roots_surface->xwayland_surface->class);
 }
 
 static void handle_surface_commit(struct wl_listener *listener, void *data) {
 	struct roots_xwayland_surface *roots_surface =
 		wl_container_of(listener, roots_surface, surface_commit);
-	struct roots_view *view = roots_surface->view;
+	struct roots_view *view = &roots_surface->view;
 	struct wlr_surface *wlr_surface = view->wlr_surface;
 
 	view_apply_damage(view);
@@ -247,7 +262,7 @@ static void handle_map(struct wl_listener *listener, void *data) {
 	struct roots_xwayland_surface *roots_surface =
 		wl_container_of(listener, roots_surface, map);
 	struct wlr_xwayland_surface *surface = data;
-	struct roots_view *view = roots_surface->view;
+	struct roots_view *view = &roots_surface->view;
 
 	view->box.x = surface->x;
 	view->box.y = surface->y;
@@ -270,9 +285,9 @@ static void handle_map(struct wl_listener *listener, void *data) {
 		view_setup(view);
 
 		wlr_foreign_toplevel_handle_v1_set_title(view->toplevel_handle,
-				view->xwayland_surface->title ?: "none");
+			roots_surface->xwayland_surface->title ?: "none");
 		wlr_foreign_toplevel_handle_v1_set_app_id(view->toplevel_handle,
-				view->xwayland_surface->class ?: "none");
+			roots_surface->xwayland_surface->class ?: "none");
 	} else {
 		view_initial_focus(view);
 	}
@@ -281,7 +296,7 @@ static void handle_map(struct wl_listener *listener, void *data) {
 static void handle_unmap(struct wl_listener *listener, void *data) {
 	struct roots_xwayland_surface *roots_surface =
 		wl_container_of(listener, roots_surface, unmap);
-	struct roots_view *view = roots_surface->view;
+	struct roots_view *view = &roots_surface->view;
 
 	wl_list_remove(&roots_surface->surface_commit.link);
 	view_unmap(view);
@@ -302,6 +317,11 @@ void handle_xwayland_surface(struct wl_listener *listener, void *data) {
 		return;
 	}
 
+	view_init(&roots_surface->view, &view_impl, ROOTS_XWAYLAND_VIEW, desktop);
+	roots_surface->view.box.x = surface->x;
+	roots_surface->view.box.y = surface->y;
+	roots_surface->xwayland_surface = surface;
+
 	roots_surface->destroy.notify = handle_destroy;
 	wl_signal_add(&surface->events.destroy, &roots_surface->destroy);
 	roots_surface->request_configure.notify = handle_request_configure;
@@ -327,25 +347,10 @@ void handle_xwayland_surface(struct wl_listener *listener, void *data) {
 	roots_surface->set_class.notify = handle_set_class;
 	wl_signal_add(&surface->events.set_class,
 			&roots_surface->set_class);
+}
 
-	struct roots_view *view = view_create(desktop);
-	if (view == NULL) {
-		free(roots_surface);
-		return;
-	}
-	view->type = ROOTS_XWAYLAND_VIEW;
-	view->box.x = surface->x;
-	view->box.y = surface->y;
-
-	view->xwayland_surface = surface;
-	view->roots_xwayland_surface = roots_surface;
-	view->activate = activate;
-	view->resize = resize;
-	view->move = move;
-	view->move_resize = move_resize;
-	view->maximize = maximize;
-	view->set_fullscreen = set_fullscreen;
-	view->close = close;
-	view->destroy = destroy;
-	roots_surface->view = view;
+struct roots_xwayland_surface *roots_xwayland_surface_from_view(
+		struct roots_view *view) {
+	assert(view->impl == &view_impl);
+	return (struct roots_xwayland_surface *)view;
 }