tablet-shell: Remove

The tablet-shell is unmaintained and unused.  It is currently
dead-weight and a burden when we make changes to weston.  Let's
drop it for now, we can pull it out of git if we find a need for it later.
diff --git a/clients/Makefile.am b/clients/Makefile.am
index 9132d35..df414d5 100644
--- a/clients/Makefile.am
+++ b/clients/Makefile.am
@@ -17,7 +17,6 @@
 
 libexec_PROGRAMS =				\
 	$(desktop_shell)			\
-	$(tablet_shell)				\
 	$(screenshooter)			\
 	$(screensaver)				\
 	$(keyboard)				\
@@ -85,10 +84,6 @@
 
 desktop_shell = weston-desktop-shell
 
-if ENABLE_TABLET_SHELL
-tablet_shell = weston-tablet-shell
-endif
-
 screenshooter = weston-screenshooter
 
 noinst_LTLIBRARIES = libtoytoolkit.la
@@ -210,12 +205,6 @@
 	desktop-shell-protocol.c
 weston_desktop_shell_LDADD = libtoytoolkit.la
 
-weston_tablet_shell_SOURCES =			\
-	tablet-shell.c				\
-	tablet-shell-client-protocol.h		\
-	tablet-shell-protocol.c
-weston_tablet_shell_LDADD = libtoytoolkit.la
-
 BUILT_SOURCES =					\
 	screenshooter-client-protocol.h		\
 	screenshooter-protocol.c		\
@@ -227,8 +216,6 @@
 	input-method-client-protocol.h		\
 	desktop-shell-client-protocol.h		\
 	desktop-shell-protocol.c		\
-	tablet-shell-client-protocol.h		\
-	tablet-shell-protocol.c			\
 	workspaces-client-protocol.h		\
 	workspaces-protocol.c
 
diff --git a/clients/tablet-shell.c b/clients/tablet-shell.c
deleted file mode 100644
index 45733b1..0000000
--- a/clients/tablet-shell.c
+++ /dev/null
@@ -1,478 +0,0 @@
-/*
- * Copyright © 2011, 2012 Intel Corporation
- *
- * Permission to use, copy, modify, distribute, and sell this software and its
- * documentation for any purpose is hereby granted without fee, provided that
- * the above copyright notice appear in all copies and that both that copyright
- * notice and this permission notice appear in supporting documentation, and
- * that the name of the copyright holders not be used in advertising or
- * publicity pertaining to distribution of the software without specific,
- * written prior permission.  The copyright holders make no representations
- * about the suitability of this software for any purpose.  It is provided "as
- * is" without express or implied warranty.
- *
- * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
- * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
- * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
- * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
- * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
- * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
- * OF THIS SOFTWARE.
- */
-
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <sys/wait.h>
-
-#include "window.h"
-#include "../shared/cairo-util.h"
-#include "../shared/config-parser.h"
-
-#include "tablet-shell-client-protocol.h"
-
-struct tablet {
-	struct display *display;
-	struct tablet_shell *tablet_shell;
-	struct rectangle allocation;
-	struct window *switcher;
-
-	struct homescreen *homescreen;
-	struct lockscreen *lockscreen;
-};
-
-struct homescreen {
-	struct window *window;
-	struct widget *widget;
-	struct wl_list launcher_list;
-};
-
-struct lockscreen {
-	struct window *window;
-	struct widget *widget;
-};
-
-struct launcher {
-	struct widget *widget;
-	struct homescreen *homescreen;
-	cairo_surface_t *icon;
-	int focused, pressed;
-	char *path;
-	struct wl_list link;
-};
-
-static char *key_lockscreen_icon;
-static char *key_lockscreen_background;
-static char *key_homescreen_background;
-
-static void
-sigchild_handler(int s)
-{
-	int status;
-	pid_t pid;
-
-	while (pid = waitpid(-1, &status, WNOHANG), pid > 0)
-		fprintf(stderr, "child %d exited\n", pid);
-}
-
-static void
-paint_background(cairo_t *cr, const char *path, struct rectangle *allocation)
-{
-	cairo_surface_t *image = NULL;
-	cairo_pattern_t *pattern;
-	cairo_matrix_t matrix;
-	double sx, sy;
-
-	cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
-	if (path)
-		image = load_cairo_surface(path);
-	if (image) {
-		pattern = cairo_pattern_create_for_surface(image);
-		sx = (double) cairo_image_surface_get_width(image) /
-			allocation->width;
-		sy = (double) cairo_image_surface_get_height(image) /
-			allocation->height;
-		cairo_matrix_init_scale(&matrix, sx, sy);
-		cairo_pattern_set_matrix(pattern, &matrix);
-		cairo_set_source(cr, pattern);
-		cairo_pattern_destroy (pattern);
-		cairo_surface_destroy(image);
-		cairo_paint(cr);
-	} else {
-		fprintf(stderr, "couldn't load background image: %s\n", path);
-		cairo_set_source_rgb(cr, 0.2, 0, 0);
-		cairo_paint(cr);
-	}
-}
-
-static void
-homescreen_draw(struct widget *widget, void *data)
-{
-	struct homescreen *homescreen = data;
-	cairo_surface_t *surface;
-	struct rectangle allocation;
-	cairo_t *cr;
-	struct launcher *launcher;
-	const int rows = 4, columns = 5, icon_width = 128, icon_height = 128;
-	int x, y, i, width, height, vmargin, hmargin, vpadding, hpadding;
-
-	surface = window_get_surface(homescreen->window);
-	cr = cairo_create(surface);
-
-	widget_get_allocation(widget, &allocation);
-	paint_background(cr, key_homescreen_background, &allocation);
-
-	cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
-
-	width = allocation.width - columns * icon_width;
-	hpadding = width / (columns + 1);
-	hmargin = (width - hpadding * (columns - 1)) / 2;
-
-	height = allocation.height - rows * icon_height;
-	vpadding = height / (rows + 1);
-	vmargin = (height - vpadding * (rows - 1)) / 2;
-
-	x = hmargin;
-	y = vmargin;
-	i = 0;
-
-	wl_list_for_each(launcher, &homescreen->launcher_list, link) {
-		widget_set_allocation(launcher->widget,
-				      x, y, icon_width, icon_height);
-		x += icon_width + hpadding;
-		i++;
-		if (i == columns) {
-			x = hmargin;
-			y += icon_height + vpadding;
-			i = 0;
-		}
-	}
-
-	cairo_destroy(cr);
-	cairo_surface_destroy(surface);
-}
-
-static void
-lockscreen_draw(struct widget *widget, void *data)
-{
-	struct lockscreen *lockscreen = data;
-	cairo_surface_t *surface;
-	cairo_surface_t *icon;
-	struct rectangle allocation;
-	cairo_t *cr;
-	int width, height;
-
-	surface = window_get_surface(lockscreen->window);
-	cr = cairo_create(surface);
-
-	widget_get_allocation(widget, &allocation);
-	paint_background(cr, key_lockscreen_background, &allocation);
-
-	cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
-	icon = load_cairo_surface(key_lockscreen_icon);
-	if (icon) {
-		width = cairo_image_surface_get_width(icon);
-		height = cairo_image_surface_get_height(icon);
-		cairo_set_source_surface(cr, icon,
-			allocation.x + (allocation.width - width) / 2,
-			allocation.y + (allocation.height - height) / 2);
-	} else {
-		fprintf(stderr, "couldn't load lockscreen icon: %s\n",
-				 key_lockscreen_icon);
-		cairo_set_source_rgb(cr, 0.2, 0, 0);
-	}
-	cairo_paint(cr);
-	cairo_destroy(cr);
-	cairo_surface_destroy(icon);
-	cairo_surface_destroy(surface);
-}
-
-static void
-lockscreen_button_handler(struct widget *widget,
-			  struct input *input, uint32_t time,
-			  uint32_t button,
-			  enum wl_pointer_button_state state, void *data)
-{
-	struct lockscreen *lockscreen = data;
-
-	if (state == WL_POINTER_BUTTON_STATE_PRESSED && lockscreen->window) {
-		window_destroy(lockscreen->window);
-		lockscreen->window = NULL;
-	}
-}
-
-static struct homescreen *
-homescreen_create(struct tablet *tablet)
-{
-	struct homescreen *homescreen;
-
-	homescreen = zalloc (sizeof *homescreen);
-	homescreen->window = window_create_custom(tablet->display);
-	homescreen->widget =
-		window_add_widget(homescreen->window, homescreen);
-	window_set_user_data(homescreen->window, homescreen);
-	window_set_title(homescreen->window, "homescreen");
-	widget_set_redraw_handler(homescreen->widget, homescreen_draw);
-
-	return homescreen;
-}
-
-static struct lockscreen *
-lockscreen_create(struct tablet *tablet)
-{
-	struct lockscreen *lockscreen;
-
-	lockscreen = zalloc (sizeof *lockscreen);
-	lockscreen->window = window_create_custom(tablet->display);
-	lockscreen->widget =
-		window_add_widget(lockscreen->window, lockscreen);
-	window_set_user_data(lockscreen->window, lockscreen);
-	window_set_title(lockscreen->window, "lockscreen");
-	widget_set_redraw_handler(lockscreen->widget, lockscreen_draw);
-	widget_set_button_handler(lockscreen->widget,
-				  lockscreen_button_handler);
-
-	return lockscreen;
-}
-
-static void
-show_lockscreen(void *data, struct tablet_shell *tablet_shell)
-{
-	struct tablet *tablet = data;
-
-	tablet->lockscreen = lockscreen_create(tablet);
-	tablet_shell_set_lockscreen(tablet->tablet_shell,
-			window_get_wl_surface(tablet->lockscreen->window));
-
-	widget_schedule_resize(tablet->lockscreen->widget,
-			       tablet->allocation.width,
-			       tablet->allocation.height);
-}
-
-static void
-show_switcher(void *data, struct tablet_shell *tablet_shell)
-{
-	struct tablet *tablet = data;
-
-	tablet->switcher = window_create_custom(tablet->display);
-	window_set_user_data(tablet->switcher, tablet);
-	tablet_shell_set_switcher(tablet->tablet_shell,
-				  window_get_wl_surface(tablet->switcher));
-}
-
-static void
-hide_switcher(void *data, struct tablet_shell *tablet_shell)
-{
-}
-
-static const struct tablet_shell_listener tablet_shell_listener = {
-	show_lockscreen,
-	show_switcher,
-	hide_switcher
-};
-
-static int
-launcher_enter_handler(struct widget *widget, struct input *input,
-			     float x, float y, void *data)
-{
-	struct launcher *launcher = data;
-
-	launcher->focused = 1;
-	widget_schedule_redraw(widget);
-
-	return CURSOR_LEFT_PTR;
-}
-
-static void
-launcher_leave_handler(struct widget *widget,
-			     struct input *input, void *data)
-{
-	struct launcher *launcher = data;
-
-	launcher->focused = 0;
-	widget_schedule_redraw(widget);
-}
-
-static void
-launcher_activate(struct launcher *widget)
-{
-	pid_t pid;
-
-	pid = fork();
-	if (pid < 0) {
-		fprintf(stderr, "fork failed: %m\n");
-		return;
-	}
-
-	if (pid)
-		return;
-
-	if (execl(widget->path, widget->path, NULL) < 0) {
-		fprintf(stderr, "execl '%s' failed: %m\n", widget->path);
-		exit(1);
-	}
-}
-
-static void
-launcher_button_handler(struct widget *widget,
-			      struct input *input, uint32_t time,
-			      uint32_t button,
-			      enum wl_pointer_button_state state, void *data)
-{
-	struct launcher *launcher;
-
-	launcher = widget_get_user_data(widget);
-	widget_schedule_redraw(widget);
-	if (state == WL_POINTER_BUTTON_STATE_RELEASED) {
-		launcher_activate(launcher);
-		launcher->pressed = 0;
-	} else if (state == WL_POINTER_BUTTON_STATE_PRESSED) 
-		launcher->pressed = 1;
-}
-
-static void
-launcher_redraw_handler(struct widget *widget, void *data)
-{
-	struct launcher *launcher = data;
-	cairo_surface_t *surface;
-	struct rectangle allocation;
-	cairo_t *cr;
-
-	surface = window_get_surface(launcher->homescreen->window);
-	cr = cairo_create(surface);
-
-	widget_get_allocation(widget, &allocation);
-	if (launcher->pressed) {
-		allocation.x++;
-		allocation.y++;
-	}
-
-	cairo_set_source_surface(cr, launcher->icon,
-				 allocation.x, allocation.y);
-	cairo_paint(cr);
-
-	if (launcher->focused) {
-		cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 0.4);
-		cairo_mask_surface(cr, launcher->icon,
-				   allocation.x, allocation.y);
-	}
-
-	cairo_destroy(cr);
-}
-
-static void
-tablet_shell_add_launcher(struct tablet *tablet,
-			  const char *icon, const char *path)
-{
-	struct launcher *launcher;
-	struct homescreen *homescreen = tablet->homescreen;
-
-	launcher = xmalloc(sizeof *launcher);
-	launcher->icon = load_cairo_surface(icon);
-	if ( !launcher->icon ||
-	     cairo_surface_status (launcher->icon) != CAIRO_STATUS_SUCCESS) {
-		fprintf(stderr, "couldn't load %s\n", icon);
-		free(launcher);
-		return;
-	}
-	launcher->path = strdup(path);
-
-	launcher->homescreen = homescreen;
-	launcher->widget = widget_add_widget(homescreen->widget, launcher);
-	widget_set_enter_handler(launcher->widget,
-				 launcher_enter_handler);
-	widget_set_leave_handler(launcher->widget,
-				 launcher_leave_handler);
-	widget_set_button_handler(launcher->widget,
-				  launcher_button_handler);
-	widget_set_redraw_handler(launcher->widget,
-				  launcher_redraw_handler);
-
-	wl_list_insert(&homescreen->launcher_list, &launcher->link);
-}
-
-static void
-global_handler(struct display *display, uint32_t name,
-		const char *interface, uint32_t version, void *data)
-{
-	struct tablet *tablet = data;
-
-	if (!strcmp(interface, "tablet_shell")) {
-		tablet->tablet_shell =
-			display_bind(display, name,
-				     &tablet_shell_interface, 1);
-		tablet_shell_add_listener(tablet->tablet_shell,
-				&tablet_shell_listener, tablet);
-	}
-}
-
-int main(int argc, char *argv[])
-{
-	struct tablet tablet = { 0 };
-	struct display *display;
-	struct output *output;
-	struct weston_config *config;
-	struct weston_config_section *s;
-	char *icon, *path;
-	const char *name;
-
-	display = display_create(&argc, argv);
-	if (display == NULL) {
-		fprintf(stderr, "failed to create display: %m\n");
-		return -1;
-	}
-
-	tablet.display = display;
-
-	display_set_user_data(tablet.display, &tablet);
-	display_set_global_handler(tablet.display, global_handler);
-
-	tablet.homescreen = homescreen_create(&tablet);
-	tablet_shell_set_homescreen(tablet.tablet_shell,
-			window_get_wl_surface(tablet.homescreen->window));
-
-	wl_display_roundtrip (display_get_display(tablet.display));
-
-	wl_list_init(&tablet.homescreen->launcher_list);
-
-	config = weston_config_parse("weston.ini");
-	s = weston_config_get_section(config, "shell", NULL, NULL);
-	weston_config_section_get_string(s, "lockscreen-icon",
-					 &key_lockscreen_icon, NULL);
-	weston_config_section_get_string(s, "lockscreen",
-					 &key_lockscreen_background, NULL);
-	weston_config_section_get_string(s, "homescreen",
-					 &key_homescreen_background, NULL);
-
-	s = NULL;
-	while (weston_config_next_section(config, &s, &name)) {
-		if (strcmp(name, "launcher") != 0)
-			continue;
-
-		weston_config_section_get_string(s, "icon", &icon, NULL);
-		weston_config_section_get_string(s, "path", &path, NULL);
-
-		if (icon != NULL && path != NULL)
-			tablet_shell_add_launcher(&tablet, icon, path);
-		else
-			fprintf(stderr, "invalid launcher section\n");
-
-		free(icon);
-		free(path);
-	}
-
-	weston_config_destroy(config);
-
-	signal(SIGCHLD, sigchild_handler);
-
-	output = display_get_output(tablet.display);
-	output_get_allocation(output, &tablet.allocation);
-	widget_schedule_resize(tablet.homescreen->widget,
-			tablet.allocation.width,
-			tablet.allocation.height);
-	display_run(display);
-
-	return 0;
-}
diff --git a/configure.ac b/configure.ac
index 2bf5f78..6c1035a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -362,13 +362,6 @@
 
 AM_CONDITIONAL(ENABLE_DESKTOP_SHELL, true)
 
-AC_ARG_ENABLE(tablet-shell,
-              AS_HELP_STRING([--disable-tablet-shell],
-                             [do not build tablet-shell server plugin and client]),,
-	      enable_tablet_shell=yes)
-AM_CONDITIONAL(ENABLE_TABLET_SHELL,
-	       test "x$enable_tablet_shell" = "xyes")
-
 # CMS modules
 AC_ARG_ENABLE(colord,
               AS_HELP_STRING([--disable-colord],
@@ -520,7 +513,6 @@
 	dbus				${enable_dbus}
 
 	Build wcap utility		${enable_wcap_tools}
-	Build Tablet Shell		${enable_tablet_shell}
 
 	weston-launch utility		${enable_weston_launch}
 	systemd-login support		${have_systemd_login}
diff --git a/protocol/Makefile.am b/protocol/Makefile.am
index 33e561c..4f5ecc3 100644
--- a/protocol/Makefile.am
+++ b/protocol/Makefile.am
@@ -1,7 +1,6 @@
 protocol_sources =				\
 	desktop-shell.xml			\
 	screenshooter.xml			\
-	tablet-shell.xml			\
 	xserver.xml				\
 	text.xml				\
 	input-method.xml			\
diff --git a/protocol/tablet-shell.xml b/protocol/tablet-shell.xml
deleted file mode 100644
index 10f1756..0000000
--- a/protocol/tablet-shell.xml
+++ /dev/null
@@ -1,40 +0,0 @@
-<protocol name="tablet">
-
-  <interface name="tablet_shell" version="1">
-    <request name="set_lockscreen">
-      <arg name="surface" type="object" interface="wl_surface"/>
-    </request>
-
-    <request name="set_switcher">
-      <arg name="surface" type="object" interface="wl_surface"/>
-    </request>
-
-    <request name="set_homescreen">
-      <arg name="surface" type="object" interface="wl_surface"/>
-    </request>
-
-    <request name="show_grid">
-      <arg name="surface" type="object" interface="wl_surface"/>
-    </request>
-
-    <request name="show_panels">
-      <arg name="surface" type="object" interface="wl_surface"/>
-    </request>
-
-    <request name="create_client">
-      <arg name="id" type="new_id" interface="tablet_client"/>
-      <arg name="name" type="string"/>
-      <arg name="fd" type="fd"/>
-    </request>
-
-    <event name="show_lockscreen"/>
-    <event name="show_switcher"/>
-    <event name="hide_switcher"/>
-  </interface>
-
-  <interface name="tablet_client" version="1">
-    <request name="destroy" type="destructor"/>
-    <request name="activate"/>
-  </interface>
-
-</protocol>
diff --git a/src/Makefile.am b/src/Makefile.am
index f6f277d..f61e4bd 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -115,7 +115,6 @@
 moduledir = $(libdir)/weston
 module_LTLIBRARIES =				\
 	$(desktop_shell)			\
-	$(tablet_shell)				\
 	$(cms_static)				\
 	$(cms_colord)				\
 	$(gl_renderer)				\
@@ -299,17 +298,6 @@
 	xdg-shell-server-protocol.h
 endif
 
-if ENABLE_TABLET_SHELL
-tablet_shell = tablet-shell.la
-tablet_shell_la_LDFLAGS = -module -avoid-version
-tablet_shell_la_LIBADD = $(COMPOSITOR_LIBS)
-tablet_shell_la_CFLAGS = $(GCC_CFLAGS) $(COMPOSITOR_CFLAGS)
-tablet_shell_la_SOURCES =			\
-	tablet-shell.c				\
-	tablet-shell-protocol.c			\
-	tablet-shell-server-protocol.h
-endif
-
 if HAVE_LCMS
 cms_static = cms-static.la
 cms_static_la_LDFLAGS = -module -avoid-version
@@ -347,8 +335,6 @@
 	screenshooter-protocol.c		\
 	text-cursor-position-server-protocol.h	\
 	text-cursor-position-protocol.c		\
-	tablet-shell-protocol.c			\
-	tablet-shell-server-protocol.h		\
 	desktop-shell-protocol.c		\
 	desktop-shell-server-protocol.h		\
 	text-protocol.c				\
diff --git a/src/tablet-shell.c b/src/tablet-shell.c
deleted file mode 100644
index b14174b..0000000
--- a/src/tablet-shell.c
+++ /dev/null
@@ -1,603 +0,0 @@
-/*
- * Copyright © 2011 Intel Corporation
- *
- * Permission to use, copy, modify, distribute, and sell this software and
- * its documentation for any purpose is hereby granted without fee, provided
- * that the above copyright notice appear in all copies and that both that
- * copyright notice and this permission notice appear in supporting
- * documentation, and that the name of the copyright holders not be used in
- * advertising or publicity pertaining to distribution of the software
- * without specific, written prior permission.  The copyright holders make
- * no representations about the suitability of this software for any
- * purpose.  It is provided "as is" without express or implied warranty.
- *
- * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
- * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
- * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
- * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
- * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
- * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
- * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#include "config.h"
-
-#include <sys/wait.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <linux/input.h>
-#include <assert.h>
-
-#include "compositor.h"
-#include "tablet-shell-server-protocol.h"
-
-/*
- * TODO: Don't fade back from black until we've received a lockscreen
- * attachment.
- */
-
-enum {
-	STATE_STARTING,
-	STATE_LOCKED,
-	STATE_HOME,
-	STATE_SWITCHER,
-	STATE_TASK
-};
-
-struct tablet_shell {
-	struct wl_resource *resource;
-
-	struct wl_listener lock_listener;
-	struct wl_listener unlock_listener;
-	struct wl_listener destroy_listener;
-
-	struct weston_compositor *compositor;
-	struct weston_process process;
-	struct wl_client *client;
-
-	struct weston_surface *surface;
-
-	struct weston_surface *lockscreen_surface;
-	struct wl_listener lockscreen_listener;
-	struct weston_layer lockscreen_layer;
-
-	struct weston_layer application_layer;
-
-	struct weston_surface *home_surface;
-	struct weston_layer homescreen_layer;
-
-	struct weston_surface *switcher_surface;
-	struct wl_listener switcher_listener;
-
-	struct tablet_client *current_client;
-
-	int state, previous_state;
-	int long_press_active;
-	struct wl_event_source *long_press_source;
-};
-
-struct tablet_client {
-	struct wl_resource *resource;
-	struct tablet_shell *shell;
-	struct wl_client *client;
-	struct weston_surface *surface;
-	char *name;
-};
-
-static void
-tablet_shell_destroy(struct wl_listener *listener, void *data);
-
-static struct tablet_shell *
-get_shell(struct weston_compositor *compositor)
-{
-	struct wl_listener *l;
-
-	l = wl_signal_get(&compositor->destroy_signal, tablet_shell_destroy);
-	if (l)
-		return container_of(l, struct tablet_shell, destroy_listener);
-
-	return NULL;
-}
-
-static void
-tablet_shell_sigchld(struct weston_process *process, int status)
-{
-	struct tablet_shell *shell =
-		container_of(process, struct tablet_shell, process);
-
-	shell->process.pid = 0;
-
-	weston_log("weston-tablet-shell crashed, exit code %d\n", status);
-}
-
-static void
-tablet_shell_set_state(struct tablet_shell *shell, int state)
-{
-	static const char *states[] = {
-		"STARTING", "LOCKED", "HOME", "SWITCHER", "TASK"
-	};
-
-	weston_log("switching to state %s (from %s)\n",
-		states[state], states[shell->state]);
-	shell->previous_state = shell->state;
-	shell->state = state;
-}
-
-static struct weston_view *
-get_surface_view(struct weston_surface *surface, int create)
-{
-	if (!surface)
-		return NULL;
-
-	if (wl_list_empty(&surface->views)) {
-		if (create)
-			return weston_view_create(surface);
-		else
-			return NULL;
-	}
-
-	return container_of(surface->views.next, struct weston_view, surface_link);
-}
-
-static void
-tablet_shell_surface_configure(struct weston_surface *surface,
-			       int32_t sx, int32_t sy)
-{
-	struct tablet_shell *shell = get_shell(surface->compositor);
-	struct weston_view *view = get_surface_view(surface, 0);
-	assert(view);
-
-	if (weston_surface_is_mapped(surface) || surface->width == 0)
-		return;
-
-	if (surface == shell->lockscreen_surface) {
-		wl_list_insert(&shell->lockscreen_layer.view_list,
-				&view->layer_link);
-	} else if (surface == shell->switcher_surface) {
-		/* */
-	} else if (surface == shell->home_surface) {
-		if (shell->state == STATE_STARTING) {
-	                /* homescreen always visible, at the bottom */
-			wl_list_insert(&shell->homescreen_layer.view_list,
-					&view->layer_link);
-
-			tablet_shell_set_state(shell, STATE_LOCKED);
-			shell->previous_state = STATE_HOME;
-			tablet_shell_send_show_lockscreen(shell->resource);
-		}
-	} else if (shell->current_client &&
-		   shell->current_client->surface != surface &&
-		   shell->current_client->client == wl_resource_get_client(surface->resource)) {
-		tablet_shell_set_state(shell, STATE_TASK);
-		shell->current_client->surface = surface;
-		weston_zoom_run(view, 0.3, 1.0, NULL, NULL);
-		wl_list_insert(&shell->application_layer.view_list,
-			       &view->layer_link);
-	}
-
-	if (view) {
-		weston_view_set_position(view, 0, 0);
-		weston_view_update_transform(view);
-	}
-}
-
-static void
-handle_lockscreen_surface_destroy(struct wl_listener *listener, void *data)
-{
-	struct tablet_shell *shell =
-		container_of(listener,
-			     struct tablet_shell, lockscreen_listener);
-
-	shell->lockscreen_surface = NULL;
-	tablet_shell_set_state(shell, shell->previous_state);
-}
-
-static void
-tablet_shell_set_lockscreen(struct wl_client *client,
-			    struct wl_resource *resource,
-			    struct wl_resource *surface_resource)
-{
-	struct tablet_shell *shell = wl_resource_get_user_data(resource);
-	struct weston_surface *es = wl_resource_get_user_data(surface_resource);
-	struct weston_view *view;
-
-	view = weston_view_create(es);
-	weston_view_set_position(view, 0, 0);
-	shell->lockscreen_surface = es;
-	es->configure = tablet_shell_surface_configure;
-	shell->lockscreen_listener.notify = handle_lockscreen_surface_destroy;
-	wl_signal_add(&es->destroy_signal, &shell->lockscreen_listener);
-}
-
-static void
-handle_switcher_surface_destroy(struct wl_listener *listener, void *data)
-{
-	struct tablet_shell *shell =
-		container_of(listener,
-			     struct tablet_shell, switcher_listener);
-
-	shell->switcher_surface = NULL;
-	if (shell->state != STATE_LOCKED)
-		tablet_shell_set_state(shell, shell->previous_state);
-}
-
-static void
-tablet_shell_set_switcher(struct wl_client *client,
-			  struct wl_resource *resource,
-			  struct wl_resource *surface_resource)
-{
-	struct tablet_shell *shell = wl_resource_get_user_data(resource);
-	struct weston_surface *es = wl_resource_get_user_data(surface_resource);
-	struct weston_view *view;
-
-	/* FIXME: Switcher should be centered and the compositor
-	 * should do the tinting of the background.  With the cache
-	 * layer idea, we should be able to hit the framerate on the
-	 * fade/zoom in. */
-	view = weston_view_create(es);
-	weston_view_set_position(view, 0, 0);
-
-	shell->switcher_surface = es;
-	shell->switcher_listener.notify = handle_switcher_surface_destroy;
-	wl_signal_add(&es->destroy_signal, &shell->switcher_listener);
-}
-
-static void
-tablet_shell_set_homescreen(struct wl_client *client,
-			    struct wl_resource *resource,
-			    struct wl_resource *surface_resource)
-{
-	struct tablet_shell *shell = wl_resource_get_user_data(resource);
-	struct weston_surface *es = wl_resource_get_user_data(surface_resource);
-	struct weston_view *view;
-
-	view = weston_view_create(es);
-	weston_view_set_position(view, 0, 0);
-
-	shell->home_surface = es;
-	es->configure = tablet_shell_surface_configure;
-}
-
-static void
-minimize_zoom_done(struct weston_view_animation *zoom, void *data)
-{
-	struct tablet_shell *shell = data;
-	struct weston_compositor *compositor = shell->compositor;
-	struct weston_seat *seat;
-
-	wl_list_for_each(seat, &compositor->seat_list, link)
-		weston_surface_activate(shell->home_surface, seat);
-}
-
-static void
-tablet_shell_switch_to(struct tablet_shell *shell,
-		       struct weston_surface *surface)
-{
-	struct weston_compositor *compositor = shell->compositor;
-	struct weston_seat *seat;
-	struct weston_surface *current;
-	struct weston_view *view = get_surface_view(surface, 1);
-
-	if (shell->state == STATE_SWITCHER) {
-		wl_list_remove(&shell->switcher_listener.link);
-		shell->switcher_surface = NULL;
-	};
-
-	if (surface == shell->home_surface) {
-		tablet_shell_set_state(shell, STATE_HOME);
-
-		if (shell->current_client && shell->current_client->surface) {
-			current = shell->current_client->surface;
-			weston_zoom_run(get_surface_view(current, 0), 1.0, 0.3,
-				        minimize_zoom_done, shell);
-		}
-	} else {
-		fprintf(stderr, "switch to %p\n", view);
-		wl_list_for_each(seat, &compositor->seat_list, link)
-			weston_surface_activate(view->surface, seat);
-		tablet_shell_set_state(shell, STATE_TASK);
-		weston_zoom_run(view, 0.3, 1.0, NULL, NULL);
-	}
-}
-
-static void
-tablet_shell_show_grid(struct wl_client *client,
-		       struct wl_resource *resource,
-		       struct wl_resource *surface_resource)
-{
-	struct tablet_shell *shell = wl_resource_get_user_data(resource);
-	struct weston_surface *es = wl_resource_get_user_data(surface_resource);
-
-	tablet_shell_switch_to(shell, es);
-}
-
-static void
-tablet_shell_show_panels(struct wl_client *client,
-			 struct wl_resource *resource,
-			 struct wl_resource *surface_resource)
-{
-	struct tablet_shell *shell = wl_resource_get_user_data(resource);
-	struct weston_surface *es = wl_resource_get_user_data(surface_resource);
-
-	tablet_shell_switch_to(shell, es);
-}
-
-static void
-destroy_tablet_client(struct wl_resource *resource)
-{
-	struct tablet_client *tablet_client =
-		wl_resource_get_user_data(resource);
-
-	free(tablet_client->name);
-	free(tablet_client);
-}
-
-static void
-tablet_client_destroy(struct wl_client *client,
-		      struct wl_resource *resource)
-{
-	wl_resource_destroy(resource);
-}
-
-static void
-tablet_client_activate(struct wl_client *client, struct wl_resource *resource)
-{
-	struct tablet_client *tablet_client = wl_resource_get_user_data(resource);
-	struct tablet_shell *shell = tablet_client->shell;
-
-	shell->current_client = tablet_client;
-	if (!tablet_client->surface)
-		return;
-
-	tablet_shell_switch_to(shell, tablet_client->surface);
-}
-
-static const struct tablet_client_interface tablet_client_implementation = {
-	tablet_client_destroy,
-	tablet_client_activate
-};
-
-static void
-tablet_shell_create_client(struct wl_client *client,
-			   struct wl_resource *resource,
-			   uint32_t id, const char *name, int fd)
-{
-	struct tablet_shell *shell = wl_resource_get_user_data(resource);
-	struct weston_compositor *compositor = shell->compositor;
-	struct tablet_client *tablet_client;
-
-	tablet_client = malloc(sizeof *tablet_client);
-	if (tablet_client == NULL) {
-		wl_resource_post_no_memory(resource);
-		return;
-	}
-
-	tablet_client->client = wl_client_create(compositor->wl_display, fd);
-	tablet_client->shell = shell;
-	tablet_client->name = strdup(name);
-
-	tablet_client->resource =
-		wl_resource_create(client, &tablet_client_interface, 1, id);
-	wl_resource_set_implementation(tablet_client->resource,
-				       &tablet_client_implementation,
-				       tablet_client, destroy_tablet_client);
-
-	tablet_client->surface = NULL;
-	shell->current_client = tablet_client;
-
-	weston_log("created client %p, id %d, name %s, fd %d\n",
-		tablet_client->client, id, name, fd);
-}
-
-static const struct tablet_shell_interface tablet_shell_implementation = {
-	tablet_shell_set_lockscreen,
-	tablet_shell_set_switcher,
-	tablet_shell_set_homescreen,
-	tablet_shell_show_grid,
-	tablet_shell_show_panels,
-	tablet_shell_create_client
-};
-
-static void
-launch_ux_daemon(struct tablet_shell *shell)
-{
-	const char *shell_exe = LIBEXECDIR "/weston-tablet-shell";
-
-	shell->client = weston_client_launch(shell->compositor,
-					   &shell->process,
-					   shell_exe, tablet_shell_sigchld);
-}
-
-static void
-toggle_switcher(struct tablet_shell *shell)
-{
-	switch (shell->state) {
-	case STATE_SWITCHER:
-		tablet_shell_send_hide_switcher(shell->resource);
-		break;
-	default:
-		tablet_shell_send_show_switcher(shell->resource);
-		tablet_shell_set_state(shell, STATE_SWITCHER);
-		break;
-	}
-}
-
-static void
-tablet_shell_lock(struct wl_listener *listener, void *data)
-{
-	struct tablet_shell *shell =
-		container_of(listener, struct tablet_shell, lock_listener);
-
-	if (shell->state == STATE_LOCKED)
-		return;
-	if (shell->state == STATE_SWITCHER)
-		tablet_shell_send_hide_switcher(shell->resource);
-
-	tablet_shell_send_show_lockscreen(shell->resource);
-	tablet_shell_set_state(shell, STATE_LOCKED);
-}
-
-static void
-tablet_shell_unlock(struct wl_listener *listener, void *data)
-{
-	struct tablet_shell *shell =
-		container_of(listener, struct tablet_shell, unlock_listener);
-
-	tablet_shell_set_state(shell, STATE_HOME);
-}
-
-static void
-go_home(struct tablet_shell *shell, struct weston_seat *seat)
-{
-	if (shell->state == STATE_SWITCHER)
-		tablet_shell_send_hide_switcher(shell->resource);
-
-	weston_surface_activate(shell->home_surface, seat);
-
-	tablet_shell_set_state(shell, STATE_HOME);
-}
-
-static int
-long_press_handler(void *data)
-{
-	struct tablet_shell *shell = data;
-
-	shell->long_press_active = 0;
-	toggle_switcher(shell);
-
-	return 1;
-}
-
-static void
-menu_key_binding(struct weston_seat *seat, uint32_t time, uint32_t key, void *data)
-{
-	struct tablet_shell *shell = data;
-
-	if (shell->state == STATE_LOCKED)
-		return;
-
-	toggle_switcher(shell);
-}
-
-static void
-home_key_binding(struct weston_seat *seat, uint32_t time, uint32_t key, void *data)
-{
-	struct tablet_shell *shell = data;
-
-	if (shell->state == STATE_LOCKED)
-		return;
-
-	if (1) {
-		wl_event_source_timer_update(shell->long_press_source, 500);
-		shell->long_press_active = 1;
-	} else if (shell->long_press_active) {
-		/* This code has never been run ... */
-		wl_event_source_timer_update(shell->long_press_source, 0);
-		shell->long_press_active = 0;
-
-		switch (shell->state) {
-		case STATE_HOME:
-		case STATE_SWITCHER:
-			toggle_switcher(shell);
-			break;
-		default:
-			go_home(shell, (struct weston_seat *) seat);
-			break;
-		}
-	}
-}
-
-static void
-destroy_tablet_shell(struct wl_resource *resource)
-{
-}
-
-static void
-bind_tablet_shell(struct wl_client *client, void *data, uint32_t version,
-		  uint32_t id)
-{
-	struct tablet_shell *shell = data;
-
-	if (shell->client != client)
-		/* Throw an error or just let the client fail when it
-		 * tries to access the object?. */
-		return;
-
-	shell->resource =
-		wl_resource_create(client, &tablet_shell_interface, 1, id);
-	wl_resource_set_implementation(shell->resource,
-				       &tablet_shell_implementation,
-				       shell, destroy_tablet_shell);
-}
-
-static void
-tablet_shell_destroy(struct wl_listener *listener, void *data)
-{
-	struct tablet_shell *shell =
-		container_of(listener, struct tablet_shell, destroy_listener);
-
-	if (shell->home_surface)
-		shell->home_surface->configure = NULL;
-
-	if (shell->lockscreen_surface)
-		shell->lockscreen_surface->configure = NULL;
-
-	wl_event_source_remove(shell->long_press_source);
-	free(shell);
-}
-
-WL_EXPORT int
-module_init(struct weston_compositor *compositor,
-	    int *argc, char *argv[])
-{
-	struct tablet_shell *shell;
-	struct wl_event_loop *loop;
-
-	shell = zalloc(sizeof *shell);
-	if (shell == NULL)
-		return -1;
-
-	shell->compositor = compositor;
-
-	shell->destroy_listener.notify = tablet_shell_destroy;
-	wl_signal_add(&compositor->destroy_signal, &shell->destroy_listener);
-	shell->lock_listener.notify = tablet_shell_lock;
-	wl_signal_add(&compositor->idle_signal, &shell->lock_listener);
-	shell->unlock_listener.notify = tablet_shell_unlock;
-	wl_signal_add(&compositor->wake_signal, &shell->unlock_listener);
-
-	/* FIXME: This will make the object available to all clients. */
-	wl_global_create(compositor->wl_display, &tablet_shell_interface, 1,
-			 shell, bind_tablet_shell);
-
-	loop = wl_display_get_event_loop(compositor->wl_display);
-	shell->long_press_source =
-		wl_event_loop_add_timer(loop, long_press_handler, shell);
-
-	weston_compositor_add_key_binding(compositor, KEY_LEFTMETA, 0,
-					  home_key_binding, shell);
-	weston_compositor_add_key_binding(compositor, KEY_RIGHTMETA, 0,
-					  home_key_binding, shell);
-	weston_compositor_add_key_binding(compositor, KEY_LEFTMETA,
-					  MODIFIER_SUPER, home_key_binding,
-					  shell);
-	weston_compositor_add_key_binding(compositor, KEY_RIGHTMETA,
-					  MODIFIER_SUPER, home_key_binding,
-					  shell);
-	weston_compositor_add_key_binding(compositor, KEY_COMPOSE, 0,
-					  menu_key_binding, shell);
-
-	weston_layer_init(&shell->homescreen_layer,
-			  &compositor->cursor_layer.link);
-	weston_layer_init(&shell->application_layer,
-			  &compositor->cursor_layer.link);
-	weston_layer_init(&shell->lockscreen_layer,
-			  &compositor->cursor_layer.link);
-	launch_ux_daemon(shell);
-
-	tablet_shell_set_state(shell, STATE_STARTING);
-
-	return 0;
-}