support xdg_activation_v1 and implement passing to execution flag

Makefile

@@ -30,14 +30,19 @@ all: mew
 config.h:
 	cp config.def.h $@
 
-mew.o: config.h wlr-layer-shell-unstable-v1-protocol.h xdg-shell-protocol.h
+mew.o: config.h wlr-layer-shell-unstable-v1-protocol.h xdg-activation-v1-protocol.h xdg-shell-protocol.h
 
-mew: wlr-layer-shell-unstable-v1-protocol.o xdg-shell-protocol.o mew.o
-	$(CC) $(LDFLAGS) -o $@ wlr-layer-shell-unstable-v1-protocol.o xdg-shell-protocol.o mew.o $(LDLIBS)
+mew: wlr-layer-shell-unstable-v1-protocol.o xdg-activation-v1-protocol.o xdg-shell-protocol.o mew.o
+	$(CC) $(LDFLAGS) -o $@ wlr-layer-shell-unstable-v1-protocol.o xdg-activation-v1-protocol.o xdg-shell-protocol.o mew.o $(LDLIBS)
 
 WAYLAND_PROTOCOLS = `$(PKG_CONFIG) --variable=pkgdatadir wayland-protocols`
 WAYLAND_SCANNER   = `$(PKG_CONFIG) --variable=wayland_scanner wayland-scanner`
 
+xdg-activation-v1-protocol.h:
+	$(WAYLAND_SCANNER) client-header $(WAYLAND_PROTOCOLS)/staging/xdg-activation/xdg-activation-v1.xml $@
+xdg-activation-v1-protocol.c:
+	$(WAYLAND_SCANNER) private-code $(WAYLAND_PROTOCOLS)/staging/xdg-activation/xdg-activation-v1.xml $@
+
 xdg-shell-protocol.h:
 	$(WAYLAND_SCANNER) client-header $(WAYLAND_PROTOCOLS)/stable/xdg-shell/xdg-shell.xml $@
 xdg-shell-protocol.c:

mew-run

@@ -32,4 +32,4 @@ path() {
 	fi
 }
 
-path | mew "$@" | ${SHELL:-"/bin/sh"} &
+path | mew -e "$@"

mew.1

@@ -3,7 +3,7 @@
 mew \- menu for wayland
 .SH SYNOPSIS
 .B mew
-.RB [ \-biv ]
+.RB [ \-beiv ]
 .RB [ \-l
 .IR lines ]
 .RB [ \-p
@@ -28,13 +28,19 @@ to stdout and mew terminates.  Entering text will narrow the items to those
 matching the tokens in the input.
 .P
 .B mew-run
-is a script spawned by the compositor that lists programs in the user's $PATH and
-runs the result in their $SHELL.
+is a script that lists programs in the user's $PATH and runs the result with
+.BR mew\ -e .
 .SH OPTIONS
 .TP
 .B \-b
 appear at the bottom of the screen.
 .TP
+.B \-e
+execute input or selection with
+.BR /bin/sh ,
+accompanied by a xdg activation token in it's environment, subsequently
+passing focus to the application ran.
+.TP
 .B \-i
 matches menu items case insensitively.
 .TP

mew.c

@@ -18,6 +18,7 @@
 
 #include "drwl.h"
 #include "poolbuf.h"
+#include "xdg-activation-v1-protocol.h"
 #include "wlr-layer-shell-unstable-v1-protocol.h"
 
 #define TEXTW(X)              (drwl_font_getwidth(drw, (X)) + lrpad)
@@ -66,6 +67,7 @@ static struct wl_data_device *data_device;
 static struct wl_data_offer *data_offer;
 static struct zwlr_layer_shell_v1 *layer_shell;
 static struct zwlr_layer_surface_v1 *layer_surface;
+static struct xdg_activation_v1 *activation;
 static struct wl_surface *surface;
 static struct wl_registry *registry;
 static Drwl *drw;
@@ -74,6 +76,7 @@ static Drwl *drw;
 
 static int (*fstrncmp)(const char *, const char *, size_t) = strncmp;
 static char *(*fstrstr)(const char *, const char *) = strstr;
+static int (*submit)(const char*) = puts;
 
 static void
 noop()
@@ -100,6 +103,44 @@ die(const char *fmt, ...)
 	exit(EXIT_FAILURE);
 }
 
+static void
+activation_token_handle_done(void *data,
+	struct xdg_activation_token_v1 *activation_token, const char *token)
+{
+	char *argv[] = {"/bin/sh", "-c", (char*)data, NULL};
+
+	xdg_activation_token_v1_destroy(activation_token);
+
+	switch (fork()) {
+	case -1:
+		die("fork:");
+	case 0:
+		setenv("XDG_ACTIVATION_TOKEN", token, 1);
+		execv(argv[0], argv);
+		die("execvp:");
+	}
+
+	running = 0;
+}
+
+static const struct xdg_activation_token_v1_listener activation_token_listener = {
+	.done = activation_token_handle_done,
+};
+
+static int
+exec_cmd(const char *text)
+{
+	struct xdg_activation_token_v1 *activation_token;
+
+	activation_token = xdg_activation_v1_get_activation_token(activation);
+	xdg_activation_token_v1_set_surface(activation_token, surface);
+	xdg_activation_token_v1_add_listener(activation_token,
+		&activation_token_listener, (void *)text);
+	xdg_activation_token_v1_commit(activation_token);
+
+	return 0;
+}
+
 static void
 parse_color(uint32_t *dest, const char *src)
 {
@@ -185,6 +226,7 @@ cleanup(void)
 
 	wl_data_device_release(data_device);
 	zwlr_layer_shell_v1_destroy(layer_shell);
+	xdg_activation_v1_destroy(activation);
 	wl_shm_destroy(shm);
 	wl_compositor_destroy(compositor);
 	wl_registry_destroy(registry);
@@ -538,8 +580,8 @@ keyboard_keypress(enum wl_keyboard_key_state state, xkb_keysym_t sym, int ctrl,
 		break;
 	case XKB_KEY_Return:
 	case XKB_KEY_KP_Enter:
-		puts((sel && !shift) ? sel->text : text);
-		if (!ctrl)
+		submit((sel && !shift) ? sel->text : text);
+		if (!ctrl && submit != exec_cmd)
 			running = 0;
 		return;
 	case XKB_KEY_Right:
@@ -741,6 +783,8 @@ registry_handle_global(void *data, struct wl_registry *registry,
 	else if (!strcmp(interface, wl_data_device_manager_interface.name))
 		data_device_manager = wl_registry_bind(registry, name,
 			&wl_data_device_manager_interface, 3);
+	else if (!strcmp(interface, xdg_activation_v1_interface.name))
+		activation = wl_registry_bind(registry, name, &xdg_activation_v1_interface, 1);
 	else if (!strcmp(interface, wl_seat_interface.name)) {
 		seat = wl_registry_bind (registry, name, &wl_seat_interface, 4);
 		wl_seat_add_listener(seat, &seat_listener, NULL);
@@ -869,7 +913,7 @@ setup(void)
 static void
 usage(void)
 {
-	die("usage: mew [-biv] [-l lines] [-p prompt] [-f font]\n"
+	die("usage: mew [-beiv] [-l lines] [-p prompt] [-f font]\n"
 	    "           [-nb color] [-nf color] [-sb color] [-sf color]");
 }
 
@@ -885,6 +929,8 @@ main(int argc, char *argv[])
 			exit(0);
 		} else if (!strcmp(argv[i], "-b"))
 			top = 0;
+		else if (!strcmp(argv[i], "-e"))
+			submit = exec_cmd;
 		else if (!strcmp(argv[i], "-i")) { 
 			fstrncmp = strncasecmp;
 			fstrstr = cistrstr;