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/*
 * Purple - Internet Messaging Library
 * Copyright (C) Pidgin Developers <devel@pidgin.im>
 *
 * Purple is the legal property of its developers, whose names are too numerous
 * to list here. Please refer to the COPYRIGHT file distributed with this
 * source distribution.
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU 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 General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this library; if not, see <https://www.gnu.org/licenses/>.
 */

#include "purpleui.h"

#include "util.h"

typedef struct {
	char *id;
	char *name;
	char *version;
	char *website;
	char *support_website;
	char *client_type;
} PurpleUiPrivate;

enum {
	PROP_0,
	PROP_ID,
	PROP_NAME,
	PROP_VERSION,
	PROP_WEBSITE,
	PROP_SUPPORT_WEBSITE,
	PROP_CLIENT_TYPE,
	N_PROPERTIES,
};
static GParamSpec *properties[N_PROPERTIES] = {NULL, };

enum {
	SIG_STARTED,
	N_SIGNALS,
};
static guint signals[N_SIGNALS] = {0, };

G_DEFINE_ABSTRACT_TYPE_WITH_PRIVATE(PurpleUi, purple_ui, G_TYPE_OBJECT)

/******************************************************************************
 * Helpers
 *****************************************************************************/
static void
purple_ui_set_id(PurpleUi *ui, const char *id) {
	PurpleUiPrivate *priv = NULL;

	g_return_if_fail(PURPLE_IS_UI(ui));

	priv = purple_ui_get_instance_private(ui);

	if(g_set_str(&priv->id, id)) {
		g_object_notify_by_pspec(G_OBJECT(ui), properties[PROP_ID]);
	}
}

static void
purple_ui_set_name(PurpleUi *ui, const char *name) {
	PurpleUiPrivate *priv = NULL;

	g_return_if_fail(PURPLE_IS_UI(ui));

	priv = purple_ui_get_instance_private(ui);

	if(g_set_str(&priv->name, name)) {
		g_object_notify_by_pspec(G_OBJECT(ui), properties[PROP_NAME]);
	}
}

static void
purple_ui_set_version(PurpleUi *ui, const char *version) {
	PurpleUiPrivate *priv = NULL;

	g_return_if_fail(PURPLE_IS_UI(ui));

	priv = purple_ui_get_instance_private(ui);

	if(g_set_str(&priv->version, version)) {
		g_object_notify_by_pspec(G_OBJECT(ui), properties[PROP_VERSION]);
	}
}

static void
purple_ui_set_website(PurpleUi *ui, const char *website) {
	PurpleUiPrivate *priv = NULL;

	g_return_if_fail(PURPLE_IS_UI(ui));

	priv = purple_ui_get_instance_private(ui);

	if(g_set_str(&priv->website, website)) {
		g_object_notify_by_pspec(G_OBJECT(ui), properties[PROP_WEBSITE]);
	}
}

static void
purple_ui_set_support_website(PurpleUi *ui, const char *support_website) {
	PurpleUiPrivate *priv = NULL;

	g_return_if_fail(PURPLE_IS_UI(ui));

	priv = purple_ui_get_instance_private(ui);

	if(g_set_str(&priv->support_website, support_website)) {
		g_object_notify_by_pspec(G_OBJECT(ui),
		                         properties[PROP_SUPPORT_WEBSITE]);
	}
}

static void
purple_ui_set_client_type(PurpleUi *ui, const char *client_type) {
	PurpleUiPrivate *priv = NULL;

	g_return_if_fail(PURPLE_IS_UI(ui));

	priv = purple_ui_get_instance_private(ui);

	if(g_set_str(&priv->client_type, client_type)) {
		g_object_notify_by_pspec(G_OBJECT(ui), properties[PROP_CLIENT_TYPE]);
	}
}

/******************************************************************************
 * GObject Implementation
 *****************************************************************************/
static void
purple_ui_get_property(GObject *obj, guint param_id, GValue *value,
                       GParamSpec *pspec)
{
	PurpleUi *ui = PURPLE_UI(obj);

	switch(param_id) {
	case PROP_ID:
		g_value_set_string(value, purple_ui_get_id(ui));
		break;
	case PROP_NAME:
		g_value_set_string(value, purple_ui_get_name(ui));
		break;
	case PROP_VERSION:
		g_value_set_string(value, purple_ui_get_version(ui));
		break;
	case PROP_WEBSITE:
		g_value_set_string(value, purple_ui_get_website(ui));
		break;
	case PROP_SUPPORT_WEBSITE:
		g_value_set_string(value, purple_ui_get_support_website(ui));
		break;
	case PROP_CLIENT_TYPE:
		g_value_set_string(value, purple_ui_get_client_type(ui));
		break;
	default:
		G_OBJECT_WARN_INVALID_PROPERTY_ID(obj, param_id, pspec);
		break;
	}
}

static void
purple_ui_set_property(GObject *obj, guint param_id, const GValue *value,
                       GParamSpec *pspec)
{
	PurpleUi *ui = PURPLE_UI(obj);

	switch(param_id) {
	case PROP_ID:
		purple_ui_set_id(ui, g_value_get_string(value));
		break;
	case PROP_NAME:
		purple_ui_set_name(ui, g_value_get_string(value));
		break;
	case PROP_VERSION:
		purple_ui_set_version(ui, g_value_get_string(value));
		break;
	case PROP_WEBSITE:
		purple_ui_set_website(ui, g_value_get_string(value));
		break;
	case PROP_SUPPORT_WEBSITE:
		purple_ui_set_support_website(ui, g_value_get_string(value));
		break;
	case PROP_CLIENT_TYPE:
		purple_ui_set_client_type(ui, g_value_get_string(value));
		break;
	default:
		G_OBJECT_WARN_INVALID_PROPERTY_ID(obj, param_id, pspec);
		break;
	}
}

static void
purple_ui_finalize(GObject *obj) {
	PurpleUiPrivate *priv = purple_ui_get_instance_private(PURPLE_UI(obj));

	g_clear_pointer(&priv->id, g_free);
	g_clear_pointer(&priv->name, g_free);
	g_clear_pointer(&priv->version, g_free);
	g_clear_pointer(&priv->website, g_free);
	g_clear_pointer(&priv->support_website, g_free);
	g_clear_pointer(&priv->client_type, g_free);

	G_OBJECT_CLASS(purple_ui_parent_class)->finalize(obj);
}

static void
purple_ui_init(G_GNUC_UNUSED PurpleUi *ui) {
}

static void
purple_ui_class_init(PurpleUiClass *klass) {
	GObjectClass *obj_class = G_OBJECT_CLASS(klass);

	obj_class->get_property = purple_ui_get_property;
	obj_class->set_property = purple_ui_set_property;
	obj_class->finalize = purple_ui_finalize;

	/**
	 * PurpleUi:id:
	 *
	 * The identifier of the user interface. This is used in places where a
	 * constant string is need to represent the user interface.
	 *
	 * Since: 3.0
	 */
	properties[PROP_ID] = g_param_spec_string(
		"id", NULL, NULL,
		NULL,
		G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);

	/**
	 * PurpleUi:name:
	 *
	 * The name of the user interface. This is used in places where it will be
	 * displayed to users, so it should be translated.
	 *
	 * Since: 3.0
	 */
	properties[PROP_NAME] = g_param_spec_string(
		"name", NULL, NULL,
		NULL,
		G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);

	/**
	 * PurpleUi:version:
	 *
	 * The version number of the user interface.
	 *
	 * Since: 3.0
	 */
	properties[PROP_VERSION] = g_param_spec_string(
		"version", NULL, NULL,
		NULL,
		G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);

	/**
	 * PurpleUi:website:
	 *
	 * The website of the user interface. This should be the main website.
	 *
	 * Since: 3.0
	 */
	properties[PROP_WEBSITE] = g_param_spec_string(
		"website", NULL, NULL,
		NULL,
		G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);

	/**
	 * PurpleUi:support-website:
	 *
	 * The support website of the user interface. This should link to a page
	 * that specifically directs users how to get support for your user
	 * interface.
	 *
	 * Since: 3.0
	 */
	properties[PROP_SUPPORT_WEBSITE] = g_param_spec_string(
		"support-website", NULL, NULL,
		NULL,
		G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);

	/**
	 * PurpleUi:client-type:
	 *
	 * The client type of the user interface. Common values include `bot`,
	 * `console`, `mobile`, `pc`, `web`, etc.
	 *
	 * Since: 3.0
	 */
	properties[PROP_CLIENT_TYPE] = g_param_spec_string(
		"client-type", NULL, NULL,
		NULL,
		G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);

	g_object_class_install_properties(obj_class, N_PROPERTIES, properties);

	/**
	 * PurpleUi::started:
	 *
	 * Emitted if [method@Ui.start] completed successfully.
	 *
	 * Since: 3.0
	 */
	signals[SIG_STARTED] = g_signal_new_class_handler(
		"started",
		G_OBJECT_CLASS_TYPE(klass),
		G_SIGNAL_RUN_LAST,
		NULL,
		NULL,
		NULL,
		NULL,
		G_TYPE_NONE,
		0);
}

/******************************************************************************
 * Public API
 *****************************************************************************/
PurpleConversationManager *
purple_ui_get_conversation_manager(PurpleUi *ui) {
	PurpleUiClass *klass = NULL;

	g_return_val_if_fail(PURPLE_IS_UI(ui), NULL);

	klass = PURPLE_UI_GET_CLASS(ui);
	if(klass != NULL && klass->get_conversation_manager != NULL) {
		return klass->get_conversation_manager(ui);
	}

	return NULL;
}

const char *
purple_ui_get_id(PurpleUi *ui) {
	PurpleUiPrivate *priv = NULL;

	g_return_val_if_fail(PURPLE_IS_UI(ui), NULL);

	priv = purple_ui_get_instance_private(ui);

	return priv->id;
}

const char *
purple_ui_get_name(PurpleUi *ui) {
	PurpleUiPrivate *priv = NULL;

	g_return_val_if_fail(PURPLE_IS_UI(ui), NULL);

	priv = purple_ui_get_instance_private(ui);

	return priv->name;
}

const char *
purple_ui_get_version(PurpleUi *ui) {
	PurpleUiPrivate *priv = NULL;

	g_return_val_if_fail(PURPLE_IS_UI(ui), NULL);

	priv = purple_ui_get_instance_private(ui);

	return priv->version;
}

const char *
purple_ui_get_website(PurpleUi *ui) {
	PurpleUiPrivate *priv = NULL;

	g_return_val_if_fail(PURPLE_IS_UI(ui), NULL);

	priv = purple_ui_get_instance_private(ui);

	return priv->website;
}

const char *
purple_ui_get_support_website(PurpleUi *ui) {
	PurpleUiPrivate *priv = NULL;

	g_return_val_if_fail(PURPLE_IS_UI(ui), NULL);

	priv = purple_ui_get_instance_private(ui);

	return priv->support_website;
}

const char *
purple_ui_get_client_type(PurpleUi *ui) {
	PurpleUiPrivate *priv = NULL;

	g_return_val_if_fail(PURPLE_IS_UI(ui), NULL);

	priv = purple_ui_get_instance_private(ui);

	return priv->client_type;
}

void
purple_ui_open_uri(PurpleUi *ui, const char *uri, GCancellable *cancellable,
                   GAsyncReadyCallback callback, gpointer data)
{
	PurpleUiClass *klass = NULL;

	g_return_if_fail(PURPLE_IS_UI(ui));
	g_return_if_fail(!purple_strempty(uri));

	klass = PURPLE_UI_GET_CLASS(ui);
	if(klass && klass->open_uri) {
		klass->open_uri(ui, uri, cancellable, callback, data);
	} else {
		g_task_report_new_error(G_OBJECT(ui), callback, data,
		                        purple_ui_open_uri,
		                        PURPLE_UI_ERROR, 0,
		                        "%s does not implement URI handling",
		                        G_OBJECT_TYPE_NAME(ui));
	}
}

gboolean
purple_ui_open_uri_finish(PurpleUi *ui, GAsyncResult *result, GError **error) {
	PurpleUiClass *klass = NULL;

	g_return_val_if_fail(PURPLE_IS_UI(ui), FALSE);
	g_return_val_if_fail(G_IS_ASYNC_RESULT(result), FALSE);

	if(g_async_result_is_tagged(result, purple_ui_open_uri)) {
		return g_task_propagate_boolean(G_TASK(result), error);
	}

	klass = PURPLE_UI_GET_CLASS(ui);
	if(klass != NULL && klass->open_uri_finish != NULL) {
		return klass->open_uri_finish(ui, result, error);
	}

	return FALSE;
}

void
purple_ui_prefs_init(PurpleUi *ui) {
	PurpleUiClass *klass = NULL;

	g_return_if_fail(PURPLE_IS_UI(ui));

	klass = PURPLE_UI_GET_CLASS(ui);
	if(klass != NULL && klass->prefs_init != NULL) {
		klass->prefs_init(ui);
	}
}

gboolean
purple_ui_start(PurpleUi *ui, GError **error) {
	PurpleUiClass *klass = NULL;

	g_return_val_if_fail(PURPLE_IS_UI(ui), FALSE);

	klass = PURPLE_UI_GET_CLASS(ui);
	if(klass != NULL && klass->start != NULL) {
		if(klass->start(ui, error)) {
			g_signal_emit(ui, signals[SIG_STARTED], 0);

			return TRUE;
		}

		return FALSE;
	}

	return FALSE;
}

void
purple_ui_stop(PurpleUi *ui) {
	PurpleUiClass *klass = NULL;

	g_return_if_fail(PURPLE_IS_UI(ui));

	klass = PURPLE_UI_GET_CLASS(ui);
	if(klass != NULL && klass->stop != NULL) {
		klass->stop(ui);
	}
}

gpointer
purple_ui_get_settings_backend(PurpleUi *ui) {
	PurpleUiClass *klass = NULL;

	g_return_val_if_fail(PURPLE_IS_UI(ui), NULL);

	klass = PURPLE_UI_GET_CLASS(ui);
	if(klass != NULL && klass->get_settings_backend != NULL) {
		return klass->get_settings_backend(ui);
	}

	return NULL;
}

PurpleHistoryAdapter *
purple_ui_get_history_adapter(PurpleUi *ui) {
	PurpleUiClass *klass = NULL;

	g_return_val_if_fail(PURPLE_IS_UI(ui), NULL);

	klass = PURPLE_UI_GET_CLASS(ui);
	if(klass != NULL && klass->get_history_adapter != NULL) {
		return klass->get_history_adapter(ui);
	}

	return NULL;
}

PurplePresenceManager *
purple_ui_get_presence_manager(PurpleUi *ui) {
	PurpleUiClass *klass = NULL;

	g_return_val_if_fail(PURPLE_IS_UI(ui), NULL);

	klass = PURPLE_UI_GET_CLASS(ui);
	if(klass != NULL && klass->get_presence_manager != NULL) {
		return klass->get_presence_manager(ui);
	}

	return NULL;
}