Initial commit

3 files changed, 1295 insertions, 0 deletions

diff --git a/.SRCINFO b/.SRCINFO
new file mode 100644
index 000000000000..c30f7531df5a
--- /dev/null
+++ b/.SRCINFO
@@ -0,0 +1,27 @@
+pkgbase = labwc-im
+	pkgdesc = stacking wayland compositor with look and feel from openbox (with IME, IME popups and minimal text-input-v1 support)
+	pkgver = 0.7.0
+	pkgrel = 1
+	url = https://github.com/labwc/labwc
+	arch = x86_64
+	license = GPL2
+	makedepends = meson
+	makedepends = scdoc
+	makedepends = wayland-protocols
+	depends = libpng
+	depends = librsvg
+	depends = pango
+	depends = seatd
+	depends = wlroots>=0.17
+	depends = wlroots<0.18
+	depends = wayland
+	depends = xorg-xwayland
+	optdepends = bemenu: default launcher via Alt+F3
+	provides = labwc
+	conflicts = labwc
+	source = labwc-0.7.0.tar.gz::https://github.com/labwc/labwc/archive/0.7.0.tar.gz
+	source = ime-popup-text-input-v1.patch
+	b2sums = 18ab44981eb4c8f949707243422feebe4292e7ac8b7cada8d309af12fad55bfc742f5ad0600f1f77dfdc83497f5dd0c546363f5b711460b1a11197ce2e13e5ca
+	b2sums = 16d73f7715e266f123c83d0297aa78cb3bbc31e7c97408f3427cdd6b40139ce7b9b2d99c6f64c046122e9fd9220381786bd57dc0c7bb9dc826848cd757c0a9a2
+
+pkgname = labwc-im
diff --git a/PKGBUILD b/PKGBUILD
new file mode 100644
index 000000000000..bfaa818279ba
--- /dev/null
+++ b/PKGBUILD
@@ -0,0 +1,34 @@
+# Maintainer: Hiroaki Yamamoto <hrak1529@gmail.com>
+
+# Based on labwc AUR from Lex Black <autumn-wind@web.de>
+
+pkgname=labwc-im
+pkgver=0.7.0
+pkgrel=1
+pkgdesc='stacking wayland compositor with look and feel from openbox (with IME, IME popups and minimal text-input-v1 support)'
+url="https://github.com/labwc/labwc"
+arch=('x86_64')
+license=('GPL2')
+depends=('libpng' 'librsvg' 'pango' 'seatd' 'wlroots>=0.17' 'wlroots<0.18' 'wayland' 'xorg-xwayland')
+makedepends=('meson' 'scdoc' 'wayland-protocols')
+optdepends=("bemenu: default launcher via Alt+F3")
+conflicts=(labwc)
+provides=(labwc)
+source=(labwc-${pkgver}.tar.gz::"https://github.com/labwc/labwc/archive/${pkgver}.tar.gz"
+        'ime-popup-text-input-v1.patch')
+b2sums=('18ab44981eb4c8f949707243422feebe4292e7ac8b7cada8d309af12fad55bfc742f5ad0600f1f77dfdc83497f5dd0c546363f5b711460b1a11197ce2e13e5ca'
+        '16d73f7715e266f123c83d0297aa78cb3bbc31e7c97408f3427cdd6b40139ce7b9b2d99c6f64c046122e9fd9220381786bd57dc0c7bb9dc826848cd757c0a9a2')
+
+prepare() {
+  cd "labwc-$pkgver"
+  patch -Np1 -i ../ime-popup-text-input-v1.patch
+}
+
+build() {
+  arch-meson -Dman-pages=enabled "labwc-$pkgver" build
+  meson compile -C build
+}
+
+package() {
+  meson install -C build --destdir "$pkgdir"
+}
diff --git a/ime-popup-text-input-v1.patch b/ime-popup-text-input-v1.patch
new file mode 100644
index 000000000000..153a62b81e61
--- /dev/null
+++ b/ime-popup-text-input-v1.patch
@@ -0,0 +1,1234 @@
+diff --git a/include/input/ime.h b/include/input/ime.h
+new file mode 100644
+index 0000000..0e13f38
+--- /dev/null
++++ b/include/input/ime.h
+@@ -0,0 +1,85 @@
++/* SPDX-License-Identifier: GPL-2.0-only */
++
++#ifndef LABWC_IME_H
++#define LABWC_IME_H
++
++#include <wlr/types/wlr_text_input_v3.h>
++#include <wlr/types/wlr_input_method_v2.h>
++#include "labwc.h"
++
++struct keyboard;
++
++/*
++ * The relay structure manages the relationship between text-inputs and
++ * input-method on a given seat. Multiple text-inputs may be bound to a relay,
++ * but at most one will be "active" (commucating with input-method) at a time.
++ * At most one input-method may be bound to the seat. When an input-method and
++ * an active text-input is present, the relay passes messages between them.
++ */
++struct input_method_relay {
++	struct seat *seat;
++	struct wl_list text_inputs; /* struct text_input.link */
++	struct wlr_input_method_v2 *input_method;
++	struct wlr_surface *focused_surface;
++	/*
++	 * Text-input which is enabled by the client and communicating with
++	 * input-method.
++	 * This must be NULL if input-method is not present.
++	 * Its client must be the same as that of focused_surface.
++	 */
++	struct text_input *active_text_input;
++
++	struct wlr_input_popup_surface_v2 *popup_surface;
++	struct wlr_scene_tree *popup_tree;
++
++	struct wl_listener new_text_input;
++	struct wl_listener new_input_method;
++
++	struct wl_listener input_method_commit;
++	struct wl_listener input_method_grab_keyboard;
++	struct wl_listener input_method_destroy;
++	struct wl_listener input_method_new_popup_surface;
++
++	struct wl_listener popup_surface_destroy;
++	struct wl_listener popup_surface_commit;
++
++	struct wl_listener keyboard_grab_destroy;
++	struct wl_listener focused_surface_destroy;
++};
++
++struct text_input {
++	struct input_method_relay *relay;
++	struct wlr_text_input_v3 *input;
++	bool v1;
++	struct wl_list link;
++
++	struct wl_listener enable;
++	struct wl_listener commit;
++	struct wl_listener disable;
++	struct wl_listener destroy;
++};
++
++/*
++ * Forward key event to keyboard grab of the seat from the keyboard
++ * if the keyboard grab exists.
++ * Returns true if the key event was forwarded.
++ */
++bool input_method_keyboard_grab_forward_key(struct keyboard *keyboard,
++	struct wlr_keyboard_key_event *event);
++
++/*
++ * Forward modifier state to keyboard grab of the seat from the keyboard
++ * if the keyboard grab exists.
++ * Returns true if the modifier state was forwarded.
++ */
++bool input_method_keyboard_grab_forward_modifiers(struct keyboard *keyboard);
++
++struct input_method_relay *input_method_relay_create(struct seat *seat);
++
++void input_method_relay_finish(struct input_method_relay *relay);
++
++/* Updates currently focused surface. Surface must belong to the same seat. */
++void input_method_relay_set_focus(struct input_method_relay *relay,
++	struct wlr_surface *surface);
++
++#endif
+diff --git a/include/labwc.h b/include/labwc.h
+index da92242..27f0fe9 100644
+--- a/include/labwc.h
++++ b/include/labwc.h
+@@ -39,10 +39,13 @@
+ #include <wlr/types/wlr_drm_lease_v1.h>
+ #include <wlr/types/wlr_virtual_pointer_v1.h>
+ #include <wlr/types/wlr_virtual_keyboard_v1.h>
++#include <wlr/types/wlr_text_input_v3.h>
++#include <wlr/types/wlr_input_method_v2.h>
+ #include <wlr/util/log.h>
+ #include "config/keybind.h"
+ #include "config/rcxml.h"
+ #include "input/cursor.h"
++#include "input/ime.h"
+ #include "regions.h"
+ #include "session-lock.h"
+ #if HAVE_NLS
+@@ -119,6 +122,8 @@ struct seat {
+ 	/* if set, views cannot receive focus */
+ 	struct wlr_layer_surface_v1 *focused_layer;
+ 
++	struct input_method_relay *input_method_relay;
++
+ 	/**
+ 	 * pressed view/surface/node will usually be NULL and is only set on
+ 	 * button press while the mouse is over a view or surface, and reset
+@@ -318,6 +323,9 @@ struct server {
+ 	struct wlr_pointer_constraints_v1 *constraints;
+ 	struct wl_listener new_constraint;
+ 
++	struct wlr_input_method_manager_v2 *input_method_manager;
++	struct wlr_text_input_manager_v3 *text_input_manager;
++
+ 	/* Set when in cycle (alt-tab) mode */
+ 	struct osd_state {
+ 		struct view *cycle_view;
+diff --git a/include/node.h b/include/node.h
+index 419aa99..6d44664 100644
+--- a/include/node.h
++++ b/include/node.h
+@@ -15,6 +15,7 @@ enum node_descriptor_type {
+ 	LAB_NODE_DESC_XDG_POPUP,
+ 	LAB_NODE_DESC_LAYER_SURFACE,
+ 	LAB_NODE_DESC_LAYER_POPUP,
++	LAB_NODE_DESC_INPUT_METHOD_POPUP,
+ 	LAB_NODE_DESC_MENUITEM,
+ 	LAB_NODE_DESC_TREE,
+ 	LAB_NODE_DESC_SSD_BUTTON,
+diff --git a/protocols/meson.build b/protocols/meson.build
+index 527f9d4..3750256 100644
+--- a/protocols/meson.build
++++ b/protocols/meson.build
+@@ -18,6 +18,7 @@ server_protocols = [
+ 	wl_protocol_dir / 'unstable/pointer-constraints/pointer-constraints-unstable-v1.xml',
+ 	wl_protocol_dir / 'staging/cursor-shape/cursor-shape-v1.xml',
+ 	wl_protocol_dir / 'staging/drm-lease/drm-lease-v1.xml',
++	wl_protocol_dir / 'unstable/text-input/text-input-unstable-v1.xml',
+ 	'wlr-layer-shell-unstable-v1.xml',
+ 	'wlr-input-inhibitor-unstable-v1.xml',
+ 	'wlr-output-power-management-unstable-v1.xml',
+diff --git a/src/desktop.c b/src/desktop.c
+index 08f8ff5..863a058 100644
+--- a/src/desktop.c
++++ b/src/desktop.c
+@@ -417,6 +417,11 @@ get_cursor_context(struct server *server)
+ 				ret.type = LAB_SSD_CLIENT;
+ 				ret.surface = get_surface_from_layer_node(node);
+ 				return ret;
++			case LAB_NODE_DESC_INPUT_METHOD_POPUP:
++				ret.node = node;
++				ret.type = LAB_SSD_CLIENT;
++				ret.surface = lab_wlr_surface_from_node(node);
++				return ret;
+ 			case LAB_NODE_DESC_MENUITEM:
+ 				/* Always return the top scene node for menu items */
+ 				ret.node = node;
+diff --git a/src/input/ime.c b/src/input/ime.c
+new file mode 100644
+index 0000000..03e2693
+--- /dev/null
++++ b/src/input/ime.c
+@@ -0,0 +1,915 @@
++// SPDX-License-Identifier: GPL-2.0-only
++/* Based on Sway (https://github.com/swaywm/sway) */
++
++#include <assert.h>
++#include "common/mem.h"
++#include "input/ime.h"
++#include "node.h"
++#include "view.h"
++#include "text-input-unstable-v1-protocol.h"
++
++#define SAME_CLIENT(wlr_obj1, wlr_obj2) \
++	(wl_resource_get_client((wlr_obj1)->resource) \
++	== wl_resource_get_client((wlr_obj2)->resource))
++
++/* ----------------------------------------------------------------------------
++ *                 text-input-unstable-v1 protocol support
++ * ----------------------------------------------------------------------------
++ * To reuse code for text-input-unstable-v3, zwp_text_input_v1 interface is
++ * wrapped as wlr_text_input_v3, by converting zwp_text_input_v1-specific
++ * events and emitting them as wlr_text_input_v3's events. When
++ * zwp_text_input_manager_v1.create_text_input event is received, a wrapped
++ * wlr_text_input_v3 is created and added to
++ * wlr_text_input_manager_v3.text_inputs.
++ * ----------------------------------------------------------------------------
++ */
++
++struct text_input_manager_v1 {
++	struct wl_global *global;
++	struct wlr_text_input_manager_v3 *wlr_manager_v3;
++	struct wl_listener display_destroy;
++};
++
++static void
++text_input_v1_clear_focused_surface(struct wlr_text_input_v3 *text_input)
++{
++	if (text_input->focused_surface) {
++		wl_list_remove(&text_input->surface_destroy.link);
++	}
++	text_input->focused_surface = NULL;
++}
++
++static void
++text_input_v1_clear_seat(struct wlr_text_input_v3 *text_input)
++{
++	if (text_input->seat) {
++		wl_list_remove(&text_input->seat_destroy.link);
++	}
++	text_input->seat = NULL;
++}
++
++static void
++text_input_v1_destroy(struct wlr_text_input_v3 *text_input)
++{
++	wl_signal_emit_mutable(&text_input->events.destroy, NULL);
++
++	text_input_v1_clear_focused_surface(text_input);
++	text_input_v1_clear_seat(text_input);
++
++	wl_list_remove(&text_input->link);
++	free(text_input->current.surrounding.text);
++	free(text_input);
++}
++
++static void
++handle_text_input_v1_focused_surface_destroy(struct wl_listener *listener,
++		void *data)
++{
++	struct wlr_text_input_v3 *text_input =
++		wl_container_of(listener, text_input, surface_destroy);
++	text_input_v1_clear_focused_surface(text_input);
++}
++
++static void
++handle_text_input_v1_activate(struct wl_client *client,
++		struct wl_resource *resource, struct wl_resource *seat,
++		struct wl_resource *surface)
++{
++	struct wlr_text_input_v3 *text_input = wl_resource_get_user_data(resource);
++	struct wlr_seat_client *seat_client = wlr_seat_client_from_resource(seat);
++
++	text_input->seat = seat_client->seat;
++	wl_signal_add(&seat_client->events.destroy, &text_input->seat_destroy);
++
++	text_input->current_enabled = true;
++	text_input->active_features = text_input->current.features;
++	wl_signal_emit_mutable(&text_input->events.enable, NULL);
++}
++
++static void
++handle_text_input_v1_deactivate(struct wl_client *client,
++		struct wl_resource *resource, struct wl_resource *seat)
++{
++	struct wlr_text_input_v3 *text_input = wl_resource_get_user_data(resource);
++
++	text_input_v1_clear_seat(text_input);
++
++	text_input->current_enabled = false;
++	text_input->active_features = 0;
++	wl_signal_emit_mutable(&text_input->events.disable, NULL);
++}
++
++static void
++handle_text_input_v1_reset(struct wl_client *client, struct wl_resource *resource)
++{
++	struct wlr_text_input_v3 *text_input = wl_resource_get_user_data(resource);
++	text_input->current = (struct wlr_text_input_v3_state){0};
++	free(text_input->current.surrounding.text);
++	wl_signal_emit_mutable(&text_input->events.commit, NULL);
++}
++
++static void
++handle_text_input_v1_set_surrounding_text(struct wl_client *client,
++		struct wl_resource *resource, const char *text,
++		uint32_t cursor, uint32_t anchor)
++{
++	struct wlr_text_input_v3 *text_input = wl_resource_get_user_data(resource);
++
++	free(text_input->current.surrounding.text);
++	text_input->current.surrounding.text = xstrdup(text);
++	text_input->current.surrounding.cursor = cursor;
++	text_input->current.surrounding.anchor = anchor;
++	text_input->current.features |= WLR_TEXT_INPUT_V3_FEATURE_SURROUNDING_TEXT;
++	text_input->active_features = text_input->current.features;
++	wl_signal_emit_mutable(&text_input->events.commit, NULL);
++}
++
++static void
++handle_text_input_v1_set_cursor_rectangle(struct wl_client *client,
++		struct wl_resource *resource, int32_t x, int32_t y,
++		int32_t width, int32_t height)
++{
++	struct wlr_text_input_v3 *text_input = wl_resource_get_user_data(resource);
++	text_input->current.cursor_rectangle.x = x;
++	text_input->current.cursor_rectangle.y = y;
++	text_input->current.cursor_rectangle.width = width;
++	text_input->current.cursor_rectangle.height = height;
++	text_input->current.features |= WLR_TEXT_INPUT_V3_FEATURE_CURSOR_RECTANGLE;
++	text_input->active_features = text_input->current.features;
++	wl_signal_emit_mutable(&text_input->events.commit, NULL);
++}
++
++static void
++handle_text_input_v1_commit_state(struct wl_client *client,
++		struct wl_resource *resource, uint32_t serial)
++{
++	struct wlr_text_input_v3 *text_input = wl_resource_get_user_data(resource);
++	text_input->current_serial = serial;
++}
++
++static void noop(void){}
++static const struct zwp_text_input_v1_interface text_input_impl = {
++	.activate = handle_text_input_v1_activate,
++	.deactivate = handle_text_input_v1_deactivate,
++	.show_input_panel = (__typeof__(text_input_impl.show_input_panel))noop,
++	.hide_input_panel = (__typeof__(text_input_impl.hide_input_panel))noop,
++	.reset = handle_text_input_v1_reset,
++	.set_surrounding_text = handle_text_input_v1_set_surrounding_text,
++	.set_content_type = (__typeof__(text_input_impl.set_content_type))noop,
++	.set_cursor_rectangle = handle_text_input_v1_set_cursor_rectangle,
++	.set_preferred_language = (__typeof__(text_input_impl.set_preferred_language))noop,
++	.commit_state = handle_text_input_v1_commit_state,
++	.invoke_action = (__typeof__(text_input_impl.invoke_action))noop,
++};
++
++static void
++handle_text_input_v1_resource_destroy(struct wl_resource *resource)
++{
++	struct wlr_text_input_v3 *text_input = wl_resource_get_user_data(resource);
++	if (!text_input) {
++		return;
++	}
++	text_input_v1_destroy(text_input);
++	wl_resource_set_user_data(resource, NULL);
++}
++
++static void
++handle_text_input_v1seat_destroy(struct wl_listener *listener, void *data)
++{
++	struct wlr_text_input_v3 *text_input =
++		wl_container_of(listener, text_input, seat_destroy);
++	if (!text_input) {
++		return;
++	}
++	struct wl_resource *resource = text_input->resource;
++	text_input_v1_destroy(text_input);
++	wl_resource_set_user_data(resource, NULL);
++}
++
++static void
++handle_manager_v1_create_text_input(struct wl_client *client,
++		struct wl_resource *resource, uint32_t id)
++{
++	int version = wl_resource_get_version(resource);
++	struct wl_resource *text_input_resource = wl_resource_create(client,
++		&zwp_text_input_v1_interface, version, id);
++	struct text_input_manager_v1 *manager_v1 = wl_resource_get_user_data(resource);
++	struct wlr_text_input_manager_v3 *wlr_manager_v3 = manager_v1->wlr_manager_v3;
++
++	struct wlr_text_input_v3 *text_input = znew(*text_input);
++	text_input->resource = text_input_resource;
++
++	wl_signal_init(&text_input->events.commit);
++	wl_signal_init(&text_input->events.enable);
++	wl_signal_init(&text_input->events.disable);
++	wl_signal_init(&text_input->events.destroy);
++
++	wl_resource_set_implementation(text_input_resource, &text_input_impl,
++		text_input, handle_text_input_v1_resource_destroy);
++
++	text_input->seat_destroy.notify =
++		handle_text_input_v1seat_destroy;
++	text_input->surface_destroy.notify =
++		handle_text_input_v1_focused_surface_destroy;
++
++	wl_list_insert(&wlr_manager_v3->text_inputs, &text_input->link);
++
++	wl_signal_emit_mutable(&wlr_manager_v3->events.text_input, text_input);
++}
++
++static const struct zwp_text_input_manager_v1_interface text_input_manager_v1_impl = {
++	.create_text_input = handle_manager_v1_create_text_input,
++};
++
++static void
++handle_manager_v1_bind(struct wl_client *wl_client, void *data,
++		uint32_t version, uint32_t id)
++{
++	struct text_input_manager_v1 *manager_v1 = data;
++
++	struct wl_resource *resource = wl_resource_create(wl_client,
++		&zwp_text_input_manager_v1_interface, version, id);
++	wl_resource_set_implementation(resource, &text_input_manager_v1_impl,
++		manager_v1, NULL);
++}
++
++static void handle_display_destroy(struct wl_listener *listener, void *data) {
++	struct text_input_manager_v1 *manager_v1 =
++		wl_container_of(listener, manager_v1, display_destroy);
++	wl_list_remove(&manager_v1->display_destroy.link);
++	wl_global_destroy(manager_v1->global);
++	free(manager_v1);
++}
++
++static void
++text_input_manager_v1_init(struct wl_display *display,
++		struct wlr_text_input_manager_v3 *wlr_manager_v3)
++{
++	struct text_input_manager_v1 * manager_v1 = znew(*manager_v1);
++	manager_v1->wlr_manager_v3 = wlr_manager_v3;
++	manager_v1->global = wl_global_create(display,
++		&zwp_text_input_manager_v1_interface, 1, manager_v1,
++		handle_manager_v1_bind);
++	manager_v1->display_destroy.notify = handle_display_destroy;
++	wl_display_add_destroy_listener(display, &manager_v1->display_destroy);
++}
++
++static void
++text_input_v1_send_enter(struct wlr_text_input_v3 *text_input,
++		struct wlr_surface *surface)
++{
++	assert(!text_input->focused_surface);
++	text_input->focused_surface = surface;
++	wl_signal_add(&text_input->focused_surface->events.destroy,
++		&text_input->surface_destroy);
++	zwp_text_input_v1_send_enter(text_input->resource,
++		surface->resource);
++}
++
++static void
++text_input_v1_send_leave(struct wlr_text_input_v3 *text_input)
++{
++	assert(text_input->focused_surface);
++	text_input_v1_clear_focused_surface(text_input);
++	zwp_text_input_v1_send_leave(text_input->resource);
++}
++
++/*
++ * Get keyboard grab of the seat from keyboard if we should forward events
++ * to it.
++ */
++static struct wlr_input_method_keyboard_grab_v2 *
++get_keyboard_grab(struct keyboard *keyboard)
++{
++	struct wlr_input_method_v2 *input_method =
++		keyboard->base.seat->input_method_relay->input_method;
++	if (!input_method || !input_method->keyboard_grab) {
++		return NULL;
++	}
++
++	/*
++	 * Input-methods often use virtual keyboard to send raw key signals
++	 * instead of sending encoded text via set_preedit_string and
++	 * commit_string. We should not forward those key events back to the
++	 * input-method so key events don't loop between the compositor and
++	 * the input-method.
++	 */
++	struct wlr_virtual_keyboard_v1 *virtual_keyboard =
++		wlr_input_device_get_virtual_keyboard(
++			keyboard->base.wlr_input_device);
++	if (virtual_keyboard && SAME_CLIENT(virtual_keyboard,
++			input_method->keyboard_grab)) {
++		return NULL;
++	}
++
++	return input_method->keyboard_grab;
++}
++
++bool
++input_method_keyboard_grab_forward_modifiers(struct keyboard *keyboard)
++{
++	struct wlr_input_method_keyboard_grab_v2 *keyboard_grab =
++		get_keyboard_grab(keyboard);
++	if (keyboard_grab) {
++		wlr_input_method_keyboard_grab_v2_set_keyboard(keyboard_grab,
++			keyboard->wlr_keyboard);
++		wlr_input_method_keyboard_grab_v2_send_modifiers(keyboard_grab,
++			&keyboard->wlr_keyboard->modifiers);
++		return true;
++	} else {
++		return false;
++	}
++}
++
++bool
++input_method_keyboard_grab_forward_key(struct keyboard *keyboard,
++		struct wlr_keyboard_key_event *event)
++{
++	struct wlr_input_method_keyboard_grab_v2 *keyboard_grab =
++		get_keyboard_grab(keyboard);
++	if (keyboard_grab) {
++		wlr_input_method_keyboard_grab_v2_set_keyboard(keyboard_grab,
++			keyboard->wlr_keyboard);
++		wlr_input_method_keyboard_grab_v2_send_key(keyboard_grab,
++			event->time_msec, event->keycode, event->state);
++		return true;
++	} else {
++		return false;
++	}
++}
++
++/*
++ * update_text_inputs_focused_surface() should be called beforehand to set
++ * right text-inputs to choose from.
++ */
++static struct text_input *
++get_active_text_input(struct input_method_relay *relay)
++{
++	if (!relay->input_method) {
++		return NULL;
++	}
++	struct text_input *text_input;
++	wl_list_for_each(text_input, &relay->text_inputs, link) {
++		if (text_input->input->focused_surface
++				&& text_input->input->current_enabled) {
++			return text_input;
++		}
++	}
++	return NULL;
++}
++
++/*
++ * Updates active text-input and activates/deactivates the input-method if the
++ * value is changed.
++ */
++static void
++update_active_text_input(struct input_method_relay *relay)
++{
++	struct text_input *active_text_input = get_active_text_input(relay);
++
++	if (relay->input_method && relay->active_text_input
++			!= active_text_input) {
++		if (active_text_input) {
++			wlr_input_method_v2_send_activate(relay->input_method);
++		} else {
++			wlr_input_method_v2_send_deactivate(relay->input_method);
++		}
++		wlr_input_method_v2_send_done(relay->input_method);
++	}
++
++	relay->active_text_input = active_text_input;
++}
++
++/*
++ * Updates focused surface of text-inputs and sends enter/leave events to
++ * the text-inputs whose focused surface is changed.
++ * When input-method is present, text-inputs whose client is the same as the
++ * relay's focused surface also have that focused surface. Clients can then
++ * send enable request on a text-input which has the focused surface to make
++ * the text-input active and start communicating with input-method.
++ */
++static void
++update_text_inputs_focused_surface(struct input_method_relay *relay)
++{
++	struct text_input *text_input;
++	wl_list_for_each(text_input, &relay->text_inputs, link) {
++		struct wlr_text_input_v3 *input = text_input->input;
++
++		struct wlr_surface *new_focused_surface;
++		if (relay->input_method && relay->focused_surface
++				&& SAME_CLIENT(input, relay->focused_surface)) {
++			new_focused_surface = relay->focused_surface;
++		} else {
++			new_focused_surface = NULL;
++		}
++
++		if (input->focused_surface == new_focused_surface) {
++			continue;
++		}
++		if (input->focused_surface) {
++			if (text_input->v1)
++				text_input_v1_send_leave(input);
++			else
++			wlr_text_input_v3_send_leave(input);
++		}
++		if (new_focused_surface) {
++			if (text_input->v1)
++				text_input_v1_send_enter(input,
++					relay->focused_surface);
++			else
++			wlr_text_input_v3_send_enter(input, new_focused_surface);
++		}
++	}
++}
++
++static void
++update_popup_position(struct input_method_relay *relay)
++{
++	struct server *server = relay->seat->server;
++	struct text_input *text_input = relay->active_text_input;
++
++	if (!text_input || !relay->focused_surface || !relay->popup_surface
++			|| !relay->popup_surface->surface->mapped) {
++		return;
++	}
++
++	struct wlr_box cursor_rect;
++	struct wlr_xdg_surface *xdg_surface =
++		wlr_xdg_surface_try_from_wlr_surface(relay->focused_surface);
++	struct wlr_layer_surface_v1 *layer_surface =
++		wlr_layer_surface_v1_try_from_wlr_surface(relay->focused_surface);
++
++	if ((text_input->input->current.features
++			& WLR_TEXT_INPUT_V3_FEATURE_CURSOR_RECTANGLE)
++			&& (xdg_surface || layer_surface)) {
++		cursor_rect = text_input->input->current.cursor_rectangle;
++
++		struct wlr_scene_tree *tree = relay->focused_surface->data;
++		int lx, ly;
++		wlr_scene_node_coords(&tree->node, &lx, &ly);
++		cursor_rect.x += lx;
++		cursor_rect.y += ly;
++
++		if (xdg_surface) {
++			/*
++			 * The position of cursor rectangle set by client
++			 * is in wl_surface-coordinate so we need to convert
++			 * it to offset relative to top-left corner of the
++			 * view (set by xdg_surface.set_window_geometry).
++			 */
++			cursor_rect.x -= xdg_surface->current.geometry.x;
++			cursor_rect.y -= xdg_surface->current.geometry.y;
++		}
++	} else {
++		cursor_rect = (struct wlr_box){0};
++	}
++
++	struct output *output =
++		output_nearest_to(server, cursor_rect.x, cursor_rect.y);
++	if (!output_is_usable(output)) {
++		wlr_log(WLR_ERROR,
++			"Cannot position IME popup (invalid output)");
++		return;
++	}
++	struct wlr_box output_box;
++	wlr_output_layout_get_box(server->output_layout, output->wlr_output,
++		&output_box);
++
++	/* Use xdg-positioner utilities to position popup */
++	struct wlr_xdg_positioner_rules rules = {
++		.anchor_rect = cursor_rect,
++		.anchor = XDG_POSITIONER_ANCHOR_BOTTOM_LEFT,
++		.gravity = XDG_POSITIONER_GRAVITY_BOTTOM_RIGHT,
++		.size = {
++			.width = relay->popup_surface->surface->current.width,
++			.height = relay->popup_surface->surface->current.height,
++		},
++		.constraint_adjustment =
++			XDG_POSITIONER_CONSTRAINT_ADJUSTMENT_FLIP_Y
++			| XDG_POSITIONER_CONSTRAINT_ADJUSTMENT_SLIDE_X,
++	};
++
++	/* Calculate the popup position */
++	struct wlr_box popup_box;
++	wlr_xdg_positioner_rules_get_geometry(&rules, &popup_box);
++	wlr_xdg_positioner_rules_unconstrain_box(&rules, &output_box, &popup_box);
++
++	wlr_scene_node_set_position(&relay->popup_tree->node,
++		popup_box.x, popup_box.y);
++
++	wlr_input_popup_surface_v2_send_text_input_rectangle(
++		relay->popup_surface, &(struct wlr_box){
++			.x = cursor_rect.x - popup_box.x,
++			.y = cursor_rect.y - popup_box.y,
++			.width = cursor_rect.width,
++			.height = cursor_rect.height,
++		});
++}
++
++static void
++handle_input_method_commit(struct wl_listener *listener, void *data)
++{
++	struct input_method_relay *relay =
++		wl_container_of(listener, relay, input_method_commit);
++	struct wlr_input_method_v2 *input_method = data;
++	assert(relay->input_method == input_method);
++
++	struct text_input *text_input = relay->active_text_input;
++	if (!text_input) {
++		return;
++	}
++
++	if (text_input->v1) {
++		/*
++		 * For some reason, if I send commit_string after preedit_string,
++		 * the text is doubled in the integrated terminal of VSCode.
++		 */
++		if (input_method->current.commit_text) {
++			zwp_text_input_v1_send_commit_string(
++				text_input->input->resource,
++				text_input->input->current_serial,
++				input_method->current.commit_text);
++		}
++		if (input_method->current.preedit.text) {
++			int preedit_len = strlen(input_method->current.preedit.text);
++			zwp_text_input_v1_send_preedit_cursor(
++				text_input->input->resource,
++				input_method->current.preedit.cursor_begin
++			);
++			if (0 < input_method->current.preedit.cursor_begin) {
++				zwp_text_input_v1_send_preedit_styling(
++					text_input->input->resource, 0,
++					input_method->current.preedit.cursor_begin,
++					ZWP_TEXT_INPUT_V1_PREEDIT_STYLE_UNDERLINE);
++			}
++			if (input_method->current.preedit.cursor_begin
++					< input_method->current.preedit.cursor_end) {
++				zwp_text_input_v1_send_preedit_styling(
++					text_input->input->resource,
++					input_method->current.preedit.cursor_begin,
++					input_method->current.preedit.cursor_end
++						- input_method->current.preedit.cursor_begin,
++					ZWP_TEXT_INPUT_V1_PREEDIT_STYLE_HIGHLIGHT);
++			}
++			if (input_method->current.preedit.cursor_end < preedit_len) {
++				zwp_text_input_v1_send_preedit_styling(
++					text_input->input->resource,
++					input_method->current.preedit.cursor_end,
++					preedit_len - input_method->current.preedit.cursor_end,
++					ZWP_TEXT_INPUT_V1_PREEDIT_STYLE_UNDERLINE);
++			}
++			zwp_text_input_v1_send_preedit_string(
++				text_input->input->resource,
++				text_input->input->current_serial,
++				input_method->current.preedit.text, input_method->current.preedit.text);
++		} else {
++			zwp_text_input_v1_send_preedit_cursor(
++				text_input->input->resource, 0);
++			zwp_text_input_v1_send_preedit_styling(
++				text_input->input->resource, 0, 0,
++				ZWP_TEXT_INPUT_V1_PREEDIT_STYLE_NONE);
++			zwp_text_input_v1_send_preedit_string(
++				text_input->input->resource,
++				text_input->input->current_serial, "", "");
++		}
++		return;
++	}
++	if (input_method->current.preedit.text) {
++		wlr_text_input_v3_send_preedit_string(
++			text_input->input,
++			input_method->current.preedit.text,
++			input_method->current.preedit.cursor_begin,
++			input_method->current.preedit.cursor_end);
++	}
++	if (input_method->current.commit_text) {
++		wlr_text_input_v3_send_commit_string(
++			text_input->input,
++			input_method->current.commit_text);
++	}
++	if (input_method->current.delete.before_length
++			|| input_method->current.delete.after_length) {
++		wlr_text_input_v3_send_delete_surrounding_text(
++			text_input->input,
++			input_method->current.delete.before_length,
++			input_method->current.delete.after_length);
++	}
++	wlr_text_input_v3_send_done(text_input->input);
++}
++
++static void
++handle_keyboard_grab_destroy(struct wl_listener *listener, void *data)
++{
++	struct input_method_relay *relay =
++		wl_container_of(listener, relay, keyboard_grab_destroy);
++	struct wlr_input_method_keyboard_grab_v2 *keyboard_grab = data;
++	wl_list_remove(&relay->keyboard_grab_destroy.link);
++
++	if (keyboard_grab->keyboard) {
++		/* Send modifier state to original client */
++		wlr_seat_keyboard_notify_modifiers(
++			keyboard_grab->input_method->seat,
++			&keyboard_grab->keyboard->modifiers);
++	}
++}
++
++static void
++handle_input_method_grab_keyboard(struct wl_listener *listener, void *data)
++{
++	struct input_method_relay *relay = wl_container_of(listener, relay,
++		input_method_grab_keyboard);
++	struct wlr_input_method_keyboard_grab_v2 *keyboard_grab = data;
++
++	/* Send modifier state to grab */
++	struct wlr_keyboard *active_keyboard =
++		wlr_seat_get_keyboard(relay->seat->seat);
++	wlr_input_method_keyboard_grab_v2_set_keyboard(
++		keyboard_grab, active_keyboard);
++
++	relay->keyboard_grab_destroy.notify = handle_keyboard_grab_destroy;
++	wl_signal_add(&keyboard_grab->events.destroy,
++		&relay->keyboard_grab_destroy);
++}
++
++static void
++handle_input_method_destroy(struct wl_listener *listener, void *data)
++{
++	struct input_method_relay *relay =
++		wl_container_of(listener, relay, input_method_destroy);
++	assert(relay->input_method == data);
++	wl_list_remove(&relay->input_method_commit.link);
++	wl_list_remove(&relay->input_method_grab_keyboard.link);
++	wl_list_remove(&relay->input_method_destroy.link);
++	relay->input_method = NULL;
++
++	update_text_inputs_focused_surface(relay);
++	update_active_text_input(relay);
++}
++
++static void
++handle_popup_surface_destroy(struct wl_listener *listener, void *data)
++{
++	struct input_method_relay *relay = wl_container_of(listener, relay,
++		popup_surface_destroy);
++	wl_list_remove(&relay->popup_surface_destroy.link);
++	wl_list_remove(&relay->popup_surface_commit.link);
++	relay->popup_surface = NULL;
++}
++
++static void
++handle_popup_surface_commit(struct wl_listener *listener, void *data)
++{
++	struct input_method_relay *relay = wl_container_of(listener, relay,
++		popup_surface_commit);
++	update_popup_position(relay);
++}
++
++static void
++handle_input_method_new_popup_surface(struct wl_listener *listener, void *data)
++{
++	struct input_method_relay *relay = wl_container_of(listener, relay,
++		input_method_new_popup_surface);
++
++	if (relay->popup_surface) {
++		wlr_log(WLR_INFO, "Multiple IME popups are not supported");
++		return;
++	}
++
++	relay->popup_surface = data;
++
++	wl_signal_add(&relay->popup_surface->events.destroy,
++		&relay->popup_surface_destroy);
++	wl_signal_add(&relay->popup_surface->surface->events.commit,
++		&relay->popup_surface_commit);
++
++	struct wlr_scene_node *scene_node = &wlr_scene_surface_create(
++		relay->popup_tree, relay->popup_surface->surface)->buffer->node;
++	node_descriptor_create(scene_node, LAB_NODE_DESC_INPUT_METHOD_POPUP, NULL);
++
++	update_popup_position(relay);
++}
++
++static void
++handle_new_input_method(struct wl_listener *listener, void *data)
++{
++	struct input_method_relay *relay =
++		wl_container_of(listener, relay, new_input_method);
++	struct wlr_input_method_v2 *input_method = data;
++	if (relay->seat->seat != input_method->seat) {
++		return;
++	}
++
++	if (relay->input_method) {
++		wlr_log(WLR_INFO,
++			"Attempted to connect second input method to a seat");
++		wlr_input_method_v2_send_unavailable(input_method);
++		return;
++	}
++
++	relay->input_method = input_method;
++
++	relay->input_method_commit.notify = handle_input_method_commit;
++	wl_signal_add(&relay->input_method->events.commit,
++		&relay->input_method_commit);
++
++	relay->input_method_grab_keyboard.notify =
++		handle_input_method_grab_keyboard;
++	wl_signal_add(&relay->input_method->events.grab_keyboard,
++		&relay->input_method_grab_keyboard);
++
++	relay->input_method_destroy.notify = handle_input_method_destroy;
++	wl_signal_add(&relay->input_method->events.destroy,
++		&relay->input_method_destroy);
++
++	relay->input_method_new_popup_surface.notify =
++		handle_input_method_new_popup_surface;
++	wl_signal_add(&relay->input_method->events.new_popup_surface,
++		&relay->input_method_new_popup_surface);
++
++	update_text_inputs_focused_surface(relay);
++	update_active_text_input(relay);
++}
++
++/* Conveys state from active text-input to input-method */
++static void
++send_state_to_input_method(struct input_method_relay *relay)
++{
++	assert(relay->active_text_input && relay->input_method);
++
++	struct wlr_input_method_v2 *input_method = relay->input_method;
++	struct wlr_text_input_v3 *input = relay->active_text_input->input;
++
++	/* TODO: only send each of those if they were modified */
++	if (input->active_features
++			& WLR_TEXT_INPUT_V3_FEATURE_SURROUNDING_TEXT) {
++		wlr_input_method_v2_send_surrounding_text(input_method,
++			input->current.surrounding.text,
++			input->current.surrounding.cursor,
++			input->current.surrounding.anchor);
++	}
++	wlr_input_method_v2_send_text_change_cause(input_method,
++		input->current.text_change_cause);
++	if (input->active_features & WLR_TEXT_INPUT_V3_FEATURE_CONTENT_TYPE) {
++		wlr_input_method_v2_send_content_type(input_method,
++			input->current.content_type.hint,
++			input->current.content_type.purpose);
++	}
++	wlr_input_method_v2_send_done(input_method);
++}
++
++static void
++handle_text_input_enable(struct wl_listener *listener, void *data)
++{
++	struct text_input *text_input =
++		wl_container_of(listener, text_input, enable);
++	struct input_method_relay *relay = text_input->relay;
++
++	update_active_text_input(relay);
++	if (relay->active_text_input == text_input) {
++		send_state_to_input_method(relay);
++	}
++}
++
++static void
++handle_text_input_disable(struct wl_listener *listener, void *data)
++{
++	struct text_input *text_input =
++		wl_container_of(listener, text_input, disable);
++	/*
++	 * When the focus is moved between surfaces from different clients and
++	 * then the old client sends "disable" event, the relay ignores it and
++	 * doesn't deactivate the input-method.
++	 */
++	update_active_text_input(text_input->relay);
++}
++
++static void
++handle_text_input_commit(struct wl_listener *listener, void *data)
++{
++	struct text_input *text_input =
++		wl_container_of(listener, text_input, commit);
++	struct input_method_relay *relay = text_input->relay;
++
++	if (relay->active_text_input == text_input) {
++		update_popup_position(relay);
++		send_state_to_input_method(relay);
++	}
++}
++
++static void
++handle_text_input_destroy(struct wl_listener *listener, void *data)
++{
++	struct text_input *text_input =
++		wl_container_of(listener, text_input, destroy);
++	wl_list_remove(&text_input->enable.link);
++	wl_list_remove(&text_input->disable.link);
++	wl_list_remove(&text_input->commit.link);
++	wl_list_remove(&text_input->destroy.link);
++	wl_list_remove(&text_input->link);
++	update_active_text_input(text_input->relay);
++	free(text_input);
++}
++
++static void
++handle_new_text_input(struct wl_listener *listener, void *data)
++{
++	struct input_method_relay *relay =
++		wl_container_of(listener, relay, new_text_input);
++	struct wlr_text_input_v3 *wlr_text_input = data;
++	bool is_v1 = !strcmp("zwp_text_input_v1",
++		wl_resource_get_class(wlr_text_input->resource));
++	if (!is_v1 && relay->seat->seat != wlr_text_input->seat) {
++		return;
++	}
++
++	struct text_input *text_input = znew(*text_input);
++	text_input->v1 = is_v1;
++	text_input->input = wlr_text_input;
++	text_input->relay = relay;
++	wl_list_insert(&relay->text_inputs, &text_input->link);
++
++	text_input->enable.notify = handle_text_input_enable;
++	wl_signal_add(&text_input->input->events.enable, &text_input->enable);
++
++	text_input->disable.notify = handle_text_input_disable;
++	wl_signal_add(&text_input->input->events.disable, &text_input->disable);
++
++	text_input->commit.notify = handle_text_input_commit;
++	wl_signal_add(&text_input->input->events.commit, &text_input->commit);
++
++	text_input->destroy.notify = handle_text_input_destroy;
++	wl_signal_add(&text_input->input->events.destroy, &text_input->destroy);
++
++	update_text_inputs_focused_surface(relay);
++}
++
++/*
++ * Usually this function is not called because the client destroys the surface
++ * role (like xdg_toplevel) first and input_method_relay_set_focus() is called
++ * before wl_surface is destroyed.
++ */
++static void
++handle_focused_surface_destroy(struct wl_listener *listener, void *data)
++{
++	struct input_method_relay *relay =
++		wl_container_of(listener, relay, focused_surface_destroy);
++	assert(relay->focused_surface == data);
++
++	input_method_relay_set_focus(relay, NULL);
++}
++
++struct input_method_relay *
++input_method_relay_create(struct seat *seat)
++{
++	struct input_method_relay *relay = znew(*relay);
++	relay->seat = seat;
++	wl_list_init(&relay->text_inputs);
++
++	relay->new_text_input.notify = handle_new_text_input;
++	wl_signal_add(&seat->server->text_input_manager->events.text_input,
++		&relay->new_text_input);
++
++	relay->new_input_method.notify = handle_new_input_method;
++	wl_signal_add(&seat->server->input_method_manager->events.input_method,
++		&relay->new_input_method);
++
++	relay->focused_surface_destroy.notify = handle_focused_surface_destroy;
++	relay->popup_surface_destroy.notify = handle_popup_surface_destroy;
++	relay->popup_surface_commit.notify = handle_popup_surface_commit;
++
++	relay->popup_tree = wlr_scene_tree_create(&seat->server->scene->tree);
++
++	text_input_manager_v1_init(seat->server->wl_display,
++		seat->server->text_input_manager);
++
++	return relay;
++}
++
++void
++input_method_relay_finish(struct input_method_relay *relay)
++{
++	wl_list_remove(&relay->new_text_input.link);
++	wl_list_remove(&relay->new_input_method.link);
++	free(relay);
++}
++
++void
++input_method_relay_set_focus(struct input_method_relay *relay,
++		struct wlr_surface *surface)
++{
++	if (relay->focused_surface == surface) {
++		wlr_log(WLR_INFO, "The surface is already focused");
++		return;
++	}
++
++	if (relay->focused_surface) {
++		wl_list_remove(&relay->focused_surface_destroy.link);
++	}
++	relay->focused_surface = surface;
++	if (surface) {
++		wl_signal_add(&surface->events.destroy,
++			&relay->focused_surface_destroy);
++	}
++
++	update_text_inputs_focused_surface(relay);
++	update_active_text_input(relay);
++}
+diff --git a/src/input/keyboard.c b/src/input/keyboard.c
+index b9d01ac..31012b4 100644
+--- a/src/input/keyboard.c
++++ b/src/input/keyboard.c
+@@ -91,7 +91,11 @@ keyboard_modifiers_notify(struct wl_listener *listener, void *data)
+ 			}
+ 		}
+ 	}
+-	wlr_seat_keyboard_notify_modifiers(seat->seat, &wlr_keyboard->modifiers);
++
++	if (!input_method_keyboard_grab_forward_modifiers(keyboard)) {
++		wlr_seat_keyboard_notify_modifiers(seat->seat,
++			&wlr_keyboard->modifiers);
++	}
+ }
+ 
+ static struct keybind *
+@@ -505,7 +509,7 @@ keyboard_key_notify(struct wl_listener *listener, void *data)
+ 		if (event->state == WL_KEYBOARD_KEY_STATE_PRESSED) {
+ 			start_keybind_repeat(seat->server, keyboard, event);
+ 		}
+-	} else {
++	} else if (!input_method_keyboard_grab_forward_key(keyboard, event)) {
+ 		wlr_seat_set_keyboard(wlr_seat, keyboard->wlr_keyboard);
+ 		wlr_seat_keyboard_notify_key(wlr_seat, event->time_msec,
+ 			event->keycode, event->state);
+diff --git a/src/input/meson.build b/src/input/meson.build
+index cfdd3cd..793c409 100644
+--- a/src/input/meson.build
++++ b/src/input/meson.build
+@@ -5,4 +5,5 @@ labwc_sources += files(
+   'keyboard.c',
+   'key-state.c',
+   'touch.c',
++  'ime.c',
+ )
+diff --git a/src/layers.c b/src/layers.c
+index abf9c71..706a26c 100644
+--- a/src/layers.c
++++ b/src/layers.c
+@@ -278,6 +278,8 @@ create_popup(struct wlr_xdg_popup *wlr_popup, struct wlr_scene_tree *parent,
+ 		free(popup);
+ 		return NULL;
+ 	}
++	/* In support of IME popups */
++	popup->wlr_popup->base->surface->data = popup->scene_tree;
+ 	node_descriptor_create(&popup->scene_tree->node,
+ 		LAB_NODE_DESC_LAYER_POPUP, popup);
+ 
+@@ -403,6 +405,9 @@ handle_new_layer_surface(struct wl_listener *listener, void *data)
+ 		return;
+ 	}
+ 
++	/* In support of IME popups */
++	layer_surface->surface->data = surface->scene_layer_surface->tree;
++
+ 	node_descriptor_create(&surface->scene_layer_surface->tree->node,
+ 		LAB_NODE_DESC_LAYER_SURFACE, surface);
+ 
+diff --git a/src/output.c b/src/output.c
+index eaec44b..892b1a7 100644
+--- a/src/output.c
++++ b/src/output.c
+@@ -304,6 +304,7 @@ new_output_notify(struct wl_listener *listener, void *data)
+ 	/*
+ 	 * Set the z-positions to achieve the following order (from top to
+ 	 * bottom):
++	 *	- IME popups
+ 	 *	- session lock layer
+ 	 *	- layer-shell popups
+ 	 *	- overlay layer
+@@ -318,6 +319,7 @@ new_output_notify(struct wl_listener *listener, void *data)
+ 	wlr_scene_node_raise_to_top(&output->layer_tree[3]->node);
+ 	wlr_scene_node_raise_to_top(&output->layer_popup_tree->node);
+ 	wlr_scene_node_raise_to_top(&output->session_lock_tree->node);
++	wlr_scene_node_raise_to_top(&server->seat.input_method_relay->popup_tree->node);
+ 
+ 	/*
+ 	 * Wait until wlr_output_layout_add_auto() returns before
+diff --git a/src/seat.c b/src/seat.c
+index 64447df..acc8d9a 100644
+--- a/src/seat.c
++++ b/src/seat.c
+@@ -414,6 +414,8 @@ seat_init(struct server *server)
+ 		&seat->virtual_keyboard_new);
+ 	seat->virtual_keyboard_new.notify = new_virtual_keyboard;
+ 
++	seat->input_method_relay = input_method_relay_create(seat);
++
+ 	seat->cursor = wlr_cursor_create();
+ 	if (!seat->cursor) {
+ 		wlr_log(WLR_ERROR, "unable to create cursor");
+@@ -437,6 +439,7 @@ seat_finish(struct server *server)
+ 	}
+ 
+ 	input_handlers_finish(seat);
++	input_method_relay_finish(seat->input_method_relay);
+ }
+ 
+ static void
+@@ -481,6 +484,7 @@ seat_focus(struct seat *seat, struct wlr_surface *surface, bool is_lock_surface)
+ 
+ 	if (!surface) {
+ 		wlr_seat_keyboard_notify_clear_focus(seat->seat);
++		input_method_relay_set_focus(seat->input_method_relay, NULL);
+ 		return;
+ 	}
+ 
+@@ -503,6 +507,8 @@ seat_focus(struct seat *seat, struct wlr_surface *surface, bool is_lock_surface)
+ 	wlr_seat_keyboard_notify_enter(seat->seat, surface,
+ 		pressed_sent_keycodes, nr_pressed_sent_keycodes, &kb->modifiers);
+ 
++	input_method_relay_set_focus(seat->input_method_relay, surface);
++
+ 	struct wlr_pointer_constraint_v1 *constraint =
+ 		wlr_pointer_constraints_v1_constraint_for_surface(server->constraints,
+ 			surface, seat->seat);
+diff --git a/src/server.c b/src/server.c
+index e7a58be..8797aaa 100644
+--- a/src/server.c
++++ b/src/server.c
+@@ -379,6 +379,10 @@ server_init(struct server *server)
+ 	 */
+ 	wlr_primary_selection_v1_device_manager_create(server->wl_display);
+ 
++	server->input_method_manager = wlr_input_method_manager_v2_create(
++		server->wl_display);
++	server->text_input_manager = wlr_text_input_manager_v3_create(
++		server->wl_display);
+ 	seat_init(server);
+ 	xdg_shell_init(server);
+ 	kde_server_decoration_init(server);
+diff --git a/src/xdg.c b/src/xdg.c
+index 713eccd..770a92f 100644
+--- a/src/xdg.c
++++ b/src/xdg.c
+@@ -671,7 +671,7 @@ xdg_surface_new(struct wl_listener *listener, void *data)
+ 	 */
+ 	kde_server_decoration_set_view(view, xdg_surface->surface);
+ 
+-	/* In support of xdg popups */
++	/* In support of xdg popups and IME popups */
+ 	xdg_surface->surface->data = tree;
+ 
+ 	view_connect_map(view, xdg_surface->surface);