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engineproxy.c
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engineproxy.c
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/* -*- mode: C; c-basic-offset: 4; indent-tabs-mode: nil; -*- */
/* vim:set et sts=4: */
/* ibus - The Input Bus
* Copyright (C) 2008-2010 Peng Huang <shawn.p.huang@gmail.com>
* Copyright (C) 2008-2010 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "engineproxy.h"
#include "global.h"
#include "ibusimpl.h"
#include "marshalers.h"
#include "types.h"
struct _BusEngineProxy {
IBusProxy parent;
/* instance members */
/* TRUE if the engine has a focus (local copy of the engine's status.) */
gboolean has_focus;
/* TRUE if the engine is enabled (local copy of the engine's status.) */
gboolean enabled;
/* A set of capabilities the current client supports (local copy of the engine's flag.) */
guint capabilities;
/* The current cursor location that are sent to the engine. */
gint x;
gint y;
gint w;
gint h;
/* an engine desc used to create the proxy. */
IBusEngineDesc *desc;
/* a key mapping for the engine that converts keycode into keysym. the mapping is used only when use_sys_layout is FALSE. */
IBusKeymap *keymap;
/* private member */
/* cached surrounding text (see also IBusEnginePrivate and
IBusInputContextPrivate) */
IBusText *surrounding_text;
guint surrounding_cursor_pos;
guint selection_anchor_pos;
/* cached properties */
IBusPropList *prop_list;
};
struct _BusEngineProxyClass {
IBusProxyClass parent;
/* class members */
void (* register_properties) (BusEngineProxy *engine,
IBusPropList *prop_list);
void (* update_property) (BusEngineProxy *engine,
IBusProperty *prop);
};
enum {
COMMIT_TEXT,
FORWARD_KEY_EVENT,
DELETE_SURROUNDING_TEXT,
REQUIRE_SURROUNDING_TEXT,
UPDATE_PREEDIT_TEXT,
SHOW_PREEDIT_TEXT,
HIDE_PREEDIT_TEXT,
UPDATE_AUXILIARY_TEXT,
SHOW_AUXILIARY_TEXT,
HIDE_AUXILIARY_TEXT,
UPDATE_LOOKUP_TABLE,
SHOW_LOOKUP_TABLE,
HIDE_LOOKUP_TABLE,
PAGE_UP_LOOKUP_TABLE,
PAGE_DOWN_LOOKUP_TABLE,
CURSOR_UP_LOOKUP_TABLE,
CURSOR_DOWN_LOOKUP_TABLE,
REGISTER_PROPERTIES,
UPDATE_PROPERTY,
LAST_SIGNAL,
};
enum {
PROP_0 = 0,
PROP_ENGINE_DESC,
};
static guint engine_signals[LAST_SIGNAL] = { 0 };
static IBusText *text_empty = NULL;
static IBusPropList *prop_list_empty = NULL;
/* functions prototype */
static void bus_engine_proxy_set_property (BusEngineProxy *engine,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void bus_engine_proxy_get_property (BusEngineProxy *engine,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void bus_engine_proxy_real_register_properties
(BusEngineProxy *engine,
IBusPropList *prop_list);
static void bus_engine_proxy_real_update_property
(BusEngineProxy *engine,
IBusProperty *prop);
static void bus_engine_proxy_real_destroy (IBusProxy *proxy);
static void bus_engine_proxy_g_signal (GDBusProxy *proxy,
const gchar *sender_name,
const gchar *signal_name,
GVariant *parameters);
static void bus_engine_proxy_initable_iface_init
(GInitableIface *initable_iface);
G_DEFINE_TYPE_WITH_CODE (BusEngineProxy, bus_engine_proxy, IBUS_TYPE_PROXY,
G_IMPLEMENT_INTERFACE (G_TYPE_INITABLE, bus_engine_proxy_initable_iface_init)
);
static GInitableIface *parent_initable_iface = NULL;
static void
bus_engine_proxy_class_init (BusEngineProxyClass *class)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (class);
gobject_class->set_property = (GObjectSetPropertyFunc)bus_engine_proxy_set_property;
gobject_class->get_property = (GObjectGetPropertyFunc)bus_engine_proxy_get_property;
class->register_properties = bus_engine_proxy_real_register_properties;
class->update_property = bus_engine_proxy_real_update_property;
IBUS_PROXY_CLASS (class)->destroy = bus_engine_proxy_real_destroy;
G_DBUS_PROXY_CLASS (class)->g_signal = bus_engine_proxy_g_signal;
parent_initable_iface =
(GInitableIface *)g_type_interface_peek (bus_engine_proxy_parent_class, G_TYPE_INITABLE);
/* install properties */
g_object_class_install_property (gobject_class,
PROP_ENGINE_DESC,
g_param_spec_object ("desc",
"desc",
"desc",
IBUS_TYPE_ENGINE_DESC,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_NAME |
G_PARAM_STATIC_BLURB |
G_PARAM_STATIC_NICK
));
/* install glib signals that will be sent when corresponding D-Bus signals are sent from an engine process. */
engine_signals[COMMIT_TEXT] =
g_signal_new (I_("commit-text"),
G_TYPE_FROM_CLASS (class),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL,
bus_marshal_VOID__OBJECT,
G_TYPE_NONE,
1,
IBUS_TYPE_TEXT);
engine_signals[FORWARD_KEY_EVENT] =
g_signal_new (I_("forward-key-event"),
G_TYPE_FROM_CLASS (class),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL,
bus_marshal_VOID__UINT_UINT_UINT,
G_TYPE_NONE,
3,
G_TYPE_UINT,
G_TYPE_UINT,
G_TYPE_UINT);
engine_signals[DELETE_SURROUNDING_TEXT] =
g_signal_new (I_("delete-surrounding-text"),
G_TYPE_FROM_CLASS (class),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL,
bus_marshal_VOID__INT_UINT,
G_TYPE_NONE,
2,
G_TYPE_INT,
G_TYPE_UINT);
engine_signals[REQUIRE_SURROUNDING_TEXT] =
g_signal_new (I_("require-surrounding-text"),
G_TYPE_FROM_CLASS (class),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL,
bus_marshal_VOID__VOID,
G_TYPE_NONE,
0);
engine_signals[UPDATE_PREEDIT_TEXT] =
g_signal_new (I_("update-preedit-text"),
G_TYPE_FROM_CLASS (class),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL,
bus_marshal_VOID__OBJECT_UINT_BOOLEAN_UINT,
G_TYPE_NONE,
4,
IBUS_TYPE_TEXT,
G_TYPE_UINT,
G_TYPE_BOOLEAN,
G_TYPE_UINT);
engine_signals[SHOW_PREEDIT_TEXT] =
g_signal_new (I_("show-preedit-text"),
G_TYPE_FROM_CLASS (class),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL,
bus_marshal_VOID__VOID,
G_TYPE_NONE,
0);
engine_signals[HIDE_PREEDIT_TEXT] =
g_signal_new (I_("hide-preedit-text"),
G_TYPE_FROM_CLASS (class),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL,
bus_marshal_VOID__VOID,
G_TYPE_NONE,
0);
engine_signals[UPDATE_AUXILIARY_TEXT] =
g_signal_new (I_("update-auxiliary-text"),
G_TYPE_FROM_CLASS (class),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL,
bus_marshal_VOID__OBJECT_BOOLEAN,
G_TYPE_NONE,
2,
IBUS_TYPE_TEXT,
G_TYPE_BOOLEAN);
engine_signals[SHOW_AUXILIARY_TEXT] =
g_signal_new (I_("show-auxiliary-text"),
G_TYPE_FROM_CLASS (class),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL,
bus_marshal_VOID__VOID,
G_TYPE_NONE,
0);
engine_signals[HIDE_AUXILIARY_TEXT] =
g_signal_new (I_("hide-auxiliary-text"),
G_TYPE_FROM_CLASS (class),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL,
bus_marshal_VOID__VOID,
G_TYPE_NONE,
0);
engine_signals[UPDATE_LOOKUP_TABLE] =
g_signal_new (I_("update-lookup-table"),
G_TYPE_FROM_CLASS (class),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL,
bus_marshal_VOID__OBJECT_BOOLEAN,
G_TYPE_NONE,
2,
IBUS_TYPE_LOOKUP_TABLE,
G_TYPE_BOOLEAN);
engine_signals[SHOW_LOOKUP_TABLE] =
g_signal_new (I_("show-lookup-table"),
G_TYPE_FROM_CLASS (class),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL,
bus_marshal_VOID__VOID,
G_TYPE_NONE,
0);
engine_signals[HIDE_LOOKUP_TABLE] =
g_signal_new (I_("hide-lookup-table"),
G_TYPE_FROM_CLASS (class),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL,
bus_marshal_VOID__VOID,
G_TYPE_NONE,
0);
engine_signals[PAGE_UP_LOOKUP_TABLE] =
g_signal_new (I_("page-up-lookup-table"),
G_TYPE_FROM_CLASS (class),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL,
bus_marshal_VOID__VOID,
G_TYPE_NONE,
0);
engine_signals[PAGE_DOWN_LOOKUP_TABLE] =
g_signal_new (I_("page-down-lookup-table"),
G_TYPE_FROM_CLASS (class),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL,
bus_marshal_VOID__VOID,
G_TYPE_NONE,
0);
engine_signals[CURSOR_UP_LOOKUP_TABLE] =
g_signal_new (I_("cursor-up-lookup-table"),
G_TYPE_FROM_CLASS (class),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL,
bus_marshal_VOID__VOID,
G_TYPE_NONE,
0);
engine_signals[CURSOR_DOWN_LOOKUP_TABLE] =
g_signal_new (I_("cursor-down-lookup-table"),
G_TYPE_FROM_CLASS (class),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL,
bus_marshal_VOID__VOID,
G_TYPE_NONE,
0);
engine_signals[REGISTER_PROPERTIES] =
g_signal_new (I_("register-properties"),
G_TYPE_FROM_CLASS (class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (BusEngineProxyClass, register_properties),
NULL, NULL,
bus_marshal_VOID__OBJECT,
G_TYPE_NONE,
1,
IBUS_TYPE_PROP_LIST);
engine_signals[UPDATE_PROPERTY] =
g_signal_new (I_("update-property"),
G_TYPE_FROM_CLASS (class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (BusEngineProxyClass, update_property),
NULL, NULL,
bus_marshal_VOID__OBJECT,
G_TYPE_NONE,
1,
IBUS_TYPE_PROPERTY);
text_empty = ibus_text_new_from_static_string ("");
g_object_ref_sink (text_empty);
prop_list_empty = ibus_prop_list_new ();
g_object_ref_sink (prop_list_empty);
}
static void
bus_engine_proxy_init (BusEngineProxy *engine)
{
engine->surrounding_text = g_object_ref_sink (text_empty);
engine->prop_list = g_object_ref_sink (prop_list_empty);
}
static void
bus_engine_proxy_set_property (BusEngineProxy *engine,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
switch (prop_id) {
case PROP_ENGINE_DESC:
g_assert (engine->desc == NULL);
engine->desc = g_value_dup_object (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (engine, prop_id, pspec);
}
}
static void
bus_engine_proxy_get_property (BusEngineProxy *engine,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
switch (prop_id) {
case PROP_ENGINE_DESC:
g_value_set_object (value, bus_engine_proxy_get_desc (engine));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (engine, prop_id, pspec);
}
}
static void
bus_engine_proxy_real_register_properties (BusEngineProxy *engine,
IBusPropList *prop_list)
{
g_assert (IBUS_IS_PROP_LIST (prop_list));
if (engine->prop_list != prop_list_empty)
g_object_unref (engine->prop_list);
engine->prop_list = (IBusPropList *) g_object_ref_sink (prop_list);
}
static void
bus_engine_proxy_real_update_property (BusEngineProxy *engine,
IBusProperty *prop)
{
g_return_if_fail (prop);
if (engine->prop_list)
ibus_prop_list_update_property (engine->prop_list, prop);
}
static void
bus_engine_proxy_real_destroy (IBusProxy *proxy)
{
BusEngineProxy *engine = (BusEngineProxy *)proxy;
if (engine->desc) {
g_object_unref (engine->desc);
engine->desc = NULL;
}
if (engine->keymap) {
g_object_unref (engine->keymap);
engine->keymap = NULL;
}
if (engine->surrounding_text) {
g_object_unref (engine->surrounding_text);
engine->surrounding_text = NULL;
}
if (engine->prop_list) {
g_object_unref (engine->prop_list);
engine->prop_list = NULL;
}
IBUS_PROXY_CLASS (bus_engine_proxy_parent_class)->destroy ((IBusProxy *)engine);
}
static void
_g_object_unref_if_floating (gpointer instance)
{
if (g_object_is_floating (instance))
g_object_unref (instance);
}
/**
* bus_engine_proxy_g_signal:
*
* Handle all D-Bus signals from the engine process. This function emits corresponding glib signal for the D-Bus signal.
*/
static void
bus_engine_proxy_g_signal (GDBusProxy *proxy,
const gchar *sender_name,
const gchar *signal_name,
GVariant *parameters)
{
BusEngineProxy *engine = (BusEngineProxy *)proxy;
/* The list of nullary D-Bus signals. */
static const struct {
const gchar *signal_name;
const guint signal_id;
} signals [] = {
{ "ShowPreeditText", SHOW_PREEDIT_TEXT },
{ "HidePreeditText", HIDE_PREEDIT_TEXT },
{ "ShowAuxiliaryText", SHOW_AUXILIARY_TEXT },
{ "HideAuxiliaryText", HIDE_AUXILIARY_TEXT },
{ "ShowLookupTable", SHOW_LOOKUP_TABLE },
{ "HideLookupTable", HIDE_LOOKUP_TABLE },
{ "PageUpLookupTable", PAGE_UP_LOOKUP_TABLE },
{ "PageDownLookupTable", PAGE_DOWN_LOOKUP_TABLE },
{ "CursorUpLookupTable", CURSOR_UP_LOOKUP_TABLE },
{ "CursorDownLookupTable", CURSOR_DOWN_LOOKUP_TABLE },
{ "RequireSurroundingText", REQUIRE_SURROUNDING_TEXT },
};
gint i;
for (i = 0; i < G_N_ELEMENTS (signals); i++) {
if (g_strcmp0 (signal_name, signals[i].signal_name) == 0) {
g_signal_emit (engine, engine_signals[signals[i].signal_id], 0);
return;
}
}
/* Handle D-Bus signals with parameters. Deserialize them and emit a glib signal. */
if (g_strcmp0 (signal_name, "CommitText") == 0) {
GVariant *arg0 = NULL;
g_variant_get (parameters, "(v)", &arg0);
g_return_if_fail (arg0 != NULL);
IBusText *text = IBUS_TEXT (ibus_serializable_deserialize (arg0));
g_variant_unref (arg0);
g_return_if_fail (text != NULL);
g_signal_emit (engine, engine_signals[COMMIT_TEXT], 0, text);
_g_object_unref_if_floating (text);
return;
}
if (g_strcmp0 (signal_name, "ForwardKeyEvent") == 0) {
guint32 keyval = 0;
guint32 keycode = 0;
guint32 states = 0;
g_variant_get (parameters, "(uuu)", &keyval, &keycode, &states);
g_signal_emit (engine,
engine_signals[FORWARD_KEY_EVENT],
0,
keyval,
keycode,
states);
return;
}
if (g_strcmp0 (signal_name, "DeleteSurroundingText") == 0) {
gint offset_from_cursor = 0;
guint nchars = 0;
g_variant_get (parameters, "(iu)", &offset_from_cursor, &nchars);
g_signal_emit (engine,
engine_signals[DELETE_SURROUNDING_TEXT],
0, offset_from_cursor, nchars);
return;
}
if (g_strcmp0 (signal_name, "UpdatePreeditText") == 0) {
GVariant *arg0 = NULL;
guint cursor_pos = 0;
gboolean visible = FALSE;
guint mode = 0;
g_variant_get (parameters, "(vubu)", &arg0, &cursor_pos, &visible, &mode);
g_return_if_fail (arg0 != NULL);
IBusText *text = IBUS_TEXT (ibus_serializable_deserialize (arg0));
g_variant_unref (arg0);
g_return_if_fail (text != NULL);
g_signal_emit (engine,
engine_signals[UPDATE_PREEDIT_TEXT],
0, text, cursor_pos, visible, mode);
_g_object_unref_if_floating (text);
return;
}
if (g_strcmp0 (signal_name, "UpdateAuxiliaryText") == 0) {
GVariant *arg0 = NULL;
gboolean visible = FALSE;
g_variant_get (parameters, "(vb)", &arg0, &visible);
g_return_if_fail (arg0 != NULL);
IBusText *text = IBUS_TEXT (ibus_serializable_deserialize (arg0));
g_variant_unref (arg0);
g_return_if_fail (text != NULL);
g_signal_emit (engine, engine_signals[UPDATE_AUXILIARY_TEXT], 0, text, visible);
_g_object_unref_if_floating (text);
return;
}
if (g_strcmp0 (signal_name, "UpdateLookupTable") == 0) {
GVariant *arg0 = NULL;
gboolean visible = FALSE;
g_variant_get (parameters, "(vb)", &arg0, &visible);
g_return_if_fail (arg0 != NULL);
IBusLookupTable *table = IBUS_LOOKUP_TABLE (ibus_serializable_deserialize (arg0));
g_variant_unref (arg0);
g_return_if_fail (table != NULL);
g_signal_emit (engine, engine_signals[UPDATE_LOOKUP_TABLE], 0, table, visible);
_g_object_unref_if_floating (table);
return;
}
if (g_strcmp0 (signal_name, "RegisterProperties") == 0) {
GVariant *arg0 = NULL;
g_variant_get (parameters, "(v)", &arg0);
g_return_if_fail (arg0 != NULL);
IBusPropList *prop_list = IBUS_PROP_LIST (ibus_serializable_deserialize (arg0));
g_variant_unref (arg0);
g_return_if_fail (prop_list != NULL);
g_signal_emit (engine, engine_signals[REGISTER_PROPERTIES], 0, prop_list);
_g_object_unref_if_floating (prop_list);
return;
}
if (g_strcmp0 (signal_name, "UpdateProperty") == 0) {
GVariant *arg0 = NULL;
g_variant_get (parameters, "(v)", &arg0);
g_return_if_fail (arg0 != NULL);
IBusProperty *prop = IBUS_PROPERTY (ibus_serializable_deserialize (arg0));
g_variant_unref (arg0);
g_return_if_fail (prop != NULL);
g_signal_emit (engine, engine_signals[UPDATE_PROPERTY], 0, prop);
_g_object_unref_if_floating (prop);
return;
}
g_return_if_reached ();
}
static BusEngineProxy *
bus_engine_proxy_new_internal (const gchar *path,
IBusEngineDesc *desc,
GDBusConnection *connection)
{
g_assert (path);
g_assert (IBUS_IS_ENGINE_DESC (desc));
g_assert (G_IS_DBUS_CONNECTION (connection));
GDBusProxyFlags flags = G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START |
G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES;
BusEngineProxy *engine =
(BusEngineProxy *) g_initable_new (BUS_TYPE_ENGINE_PROXY,
NULL,
NULL,
"desc", desc,
"g-connection", connection,
"g-interface-name", IBUS_INTERFACE_ENGINE,
"g-object-path", path,
"g-default-timeout", g_gdbus_timeout,
"g-flags", flags,
NULL);
const gchar *layout = ibus_engine_desc_get_layout (desc);
if (layout != NULL && layout[0] != '\0') {
engine->keymap = ibus_keymap_get (layout);
}
return engine;
}
typedef struct {
GSimpleAsyncResult *simple;
IBusEngineDesc *desc;
BusComponent *component;
BusFactoryProxy *factory;
GCancellable *cancellable;
gulong cancelled_handler_id;
guint handler_id;
guint timeout_id;
gint timeout;
} EngineProxyNewData;
static void
engine_proxy_new_data_free (EngineProxyNewData *data)
{
if (data->simple != NULL) {
g_object_unref (data->simple);
}
if (data->desc != NULL) {
g_object_unref (data->desc);
}
if (data->component != NULL) {
if (data->handler_id != 0) {
g_signal_handler_disconnect (data->component, data->handler_id);
}
g_object_unref (data->component);
}
if (data->factory != NULL) {
g_object_unref (data->factory);
}
if (data->timeout_id != 0) {
g_source_remove (data->timeout_id);
}
if (data->cancellable != NULL) {
if (data->cancelled_handler_id != 0) {
g_cancellable_disconnect (data->cancellable,
data->cancelled_handler_id);
}
g_object_unref (data->cancellable);
}
g_slice_free (EngineProxyNewData, data);
}
/**
* create_engine_ready_cb:
*
* A callback function to be called when bus_factory_proxy_create_engine finishes.
* Create an BusEngineProxy object and call the GAsyncReadyCallback.
*/
static void
create_engine_ready_cb (BusFactoryProxy *factory,
GAsyncResult *res,
EngineProxyNewData *data)
{
g_return_if_fail (data->simple != NULL);
GError *error = NULL;
gchar *path = bus_factory_proxy_create_engine_finish (factory,
res,
&error);
if (path == NULL) {
g_simple_async_result_set_from_error (data->simple, error);
g_simple_async_result_complete_in_idle (data->simple);
engine_proxy_new_data_free (data);
return;
}
BusEngineProxy *engine =
bus_engine_proxy_new_internal (path,
data->desc,
g_dbus_proxy_get_connection ((GDBusProxy *)data->factory));
g_free (path);
/* FIXME: set destroy callback ? */
g_simple_async_result_set_op_res_gpointer (data->simple, engine, NULL);
g_simple_async_result_complete_in_idle (data->simple);
engine_proxy_new_data_free (data);
}
/**
* notify_factory_cb:
*
* A callback function to be called when bus_component_start() emits "notify::factory" signal within 5 seconds.
* Call bus_factory_proxy_create_engine to create the engine proxy asynchronously.
*/
static void
notify_factory_cb (BusComponent *component,
GParamSpec *spec,
EngineProxyNewData *data)
{
data->factory = bus_component_get_factory (data->component);
if (data->factory != NULL) {
g_object_ref (data->factory);
/* Timeout should be removed */
if (data->timeout_id != 0) {
g_source_remove (data->timeout_id);
data->timeout_id = 0;
}
/* Handler of notify::factory should be removed. */
if (data->handler_id != 0) {
g_signal_handler_disconnect (data->component, data->handler_id);
data->handler_id = 0;
}
/* We *have to* disconnect the cancelled_cb here, since g_dbus_proxy_call
* calls create_engine_ready_cb even if the proxy call is cancelled, and
* in this case, create_engine_ready_cb itself will return error using
* g_simple_async_result_set_from_error and g_simple_async_result_complete.
* Otherwise, g_simple_async_result_complete might be called twice for a
* single data->simple twice (first in cancelled_cb and later in
* create_engine_ready_cb). */
if (data->cancellable && data->cancelled_handler_id != 0) {
g_cancellable_disconnect (data->cancellable, data->cancelled_handler_id);
data->cancelled_handler_id = 0;
}
/* Create engine from factory. */
bus_factory_proxy_create_engine (data->factory,
data->desc,
data->timeout,
data->cancellable,
(GAsyncReadyCallback) create_engine_ready_cb,
data);
}
/* If factory is NULL, we will continue wait for
* factory notify signal or timeout */
}
/**
* timeout_cb:
*
* A callback function to be called when bus_component_start() does not emit "notify::factory" signal within 5 seconds.
* Call the GAsyncReadyCallback and stop the 5 sec timer.
*/
static gboolean
timeout_cb (EngineProxyNewData *data)
{
g_simple_async_result_set_error (data->simple,
G_DBUS_ERROR,
G_DBUS_ERROR_FAILED,
"Timeout was reached");
g_simple_async_result_complete_in_idle (data->simple);
engine_proxy_new_data_free (data);
return FALSE;
}
/**
* cancelled_cb:
*
* A callback function to be called when someone calls g_cancellable_cancel()
* for the cancellable object for bus_engine_proxy_new.
* Call the GAsyncReadyCallback.
*/
static gboolean
cancelled_idle_cb (EngineProxyNewData *data)
{
g_simple_async_result_set_error (data->simple,
G_DBUS_ERROR,
G_DBUS_ERROR_FAILED,
"Operation was cancelled");
g_simple_async_result_complete_in_idle (data->simple);
engine_proxy_new_data_free (data);
return FALSE;
}
static void
cancelled_cb (GCancellable *cancellable,
EngineProxyNewData *data)
{
/* Cancel the bus_engine_proxy_new() in idle to avoid deadlock.
* And use HIGH priority to avoid timeout event happening before
* idle callback. */
g_idle_add_full (G_PRIORITY_HIGH,
(GSourceFunc) cancelled_idle_cb,
data, NULL);
}
void
bus_engine_proxy_new (IBusEngineDesc *desc,
gint timeout,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
g_assert (IBUS_IS_ENGINE_DESC (desc));
g_assert (cancellable == NULL || G_IS_CANCELLABLE (cancellable));
g_assert (callback);
GSimpleAsyncResult *simple =
g_simple_async_result_new (NULL,
callback,
user_data,
bus_engine_proxy_new);
if (g_cancellable_is_cancelled (cancellable)) {
g_simple_async_result_set_error (simple,
G_DBUS_ERROR,
G_DBUS_ERROR_FAILED,
"Operation was cancelled");
g_simple_async_result_complete_in_idle (simple);
g_object_unref (simple);
return;
}
EngineProxyNewData *data = g_slice_new0 (EngineProxyNewData);
data->desc = g_object_ref (desc);
data->component = bus_component_from_engine_desc (desc);
g_object_ref (data->component);
data->simple = simple;
data->timeout = timeout;
data->factory = bus_component_get_factory (data->component);
if (data->factory == NULL) {
/* The factory is not ready yet. Create the factory first, and wait for
* the "notify::factory" signal. In the handler of "notify::factory",
* we'll create the engine proxy. */
data->handler_id = g_signal_connect (data->component,
"notify::factory",
G_CALLBACK (notify_factory_cb),
data);
data->timeout_id = g_timeout_add (timeout,
(GSourceFunc) timeout_cb,
data);
if (cancellable) {
data->cancellable = (GCancellable *) g_object_ref (cancellable);
data->cancelled_handler_id = g_cancellable_connect (cancellable,
(GCallback) cancelled_cb,
data,
NULL);
}
bus_component_start (data->component, g_verbose);
}
else {
/* The factory is ready. We'll create the engine proxy directly. */
g_object_ref (data->factory);
/* We don't have to connect to cancelled_cb here, since g_dbus_proxy_call
* calls create_engine_ready_cb even if the proxy call is cancelled, and
* in this case, create_engine_ready_cb itself can return error using
* g_simple_async_result_set_from_error and g_simple_async_result_complete. */
bus_factory_proxy_create_engine (data->factory,
data->desc,
timeout,
cancellable,
(GAsyncReadyCallback) create_engine_ready_cb,
data);
}
}
BusEngineProxy *
bus_engine_proxy_new_finish (GAsyncResult *res,
GError **error)
{
GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (res);
g_assert (error == NULL || *error == NULL);
g_assert (g_simple_async_result_get_source_tag (simple) == bus_engine_proxy_new);
if (g_simple_async_result_propagate_error (simple, error))
return NULL;
return (BusEngineProxy *) g_simple_async_result_get_op_res_gpointer(simple);
}
void
bus_engine_proxy_process_key_event (BusEngineProxy *engine,
guint keyval,
guint keycode,
guint state,
GAsyncReadyCallback callback,
gpointer user_data)
{
g_assert (BUS_IS_ENGINE_PROXY (engine));
if (keycode != 0 && bus_ibus_impl_is_use_sys_layout (BUS_DEFAULT_IBUS) == FALSE) {
/* Since use_sys_layout is false, we don't rely on XKB. Try to convert keyval from keycode by using our own mapping. */
IBusKeymap *keymap = engine->keymap;
if (keymap == NULL)
keymap = BUS_DEFAULT_KEYMAP;
if (keymap != NULL) {
guint t = ibus_keymap_lookup_keysym (keymap, keycode, state);
if (t != IBUS_KEY_VoidSymbol) {
keyval = t;
}
}
}
g_dbus_proxy_call ((GDBusProxy *)engine,
"ProcessKeyEvent",
g_variant_new ("(uuu)", keyval, keycode, state),
G_DBUS_CALL_FLAGS_NONE,
-1,
NULL,
callback,
user_data);
}
void
bus_engine_proxy_set_cursor_location (BusEngineProxy *engine,
gint x,
gint y,
gint w,
gint h)
{
g_assert (BUS_IS_ENGINE_PROXY (engine));
if (engine->x != x || engine->y != y || engine->w != w || engine->h != h) {
engine->x = x;
engine->y = y;
engine->w = w;
engine->h = h;
g_dbus_proxy_call ((GDBusProxy *)engine,
"SetCursorLocation",
g_variant_new ("(iiii)", x, y, w, h),
G_DBUS_CALL_FLAGS_NONE,
-1,
NULL,
NULL,
NULL);
}
}
void