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/*
* This file is part of Xfce (https://gitlab.xfce.org).
*
* Copyright (c) 2021 Jan Ziak <0xe2.0x9a.0x9b@xfce.org>
* Copyright (c) 2023 Błażej Szczygieł
*
* This program 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 program 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 Library General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#pragma once
#include <glib.h>
#include <gtk/gtk.h>
#include <libxfce4panel/libxfce4panel.h>
#include <functional>
#include <memory>
namespace xfce4 {
using namespace std;
class TimeoutResponse
{
/* Invoke the timeout handler again, otherwise stop the timer */
TimeoutResponse (gboolean again)
: m_again(again)
{}
const bool m_again;
public:
operator gboolean () const
{
return m_again;
}
static TimeoutResponse Remove ()
{
return false;
}
static TimeoutResponse Again ()
{
return true;
}
};
using SourceTag = weak_ptr<guint>;
static SourceTag
timeout_add (guint interval_ms, const function<TimeoutResponse ()> &fn, gint priority = G_PRIORITY_DEFAULT)
{
static_assert(is_same_v<SourceTag::element_type, guint>);
using FunctionType = pair<decay_t<decltype (fn)>, shared_ptr<guint>>;
auto fnPtr = new FunctionType (fn, nullptr);
guint id = g_timeout_add_full (
priority,
interval_ms,
[](gpointer data)->gboolean {
auto &fnRef = *reinterpret_cast<FunctionType *> (data);
return fnRef.first();
},
fnPtr,
[](gpointer data) {
delete reinterpret_cast<FunctionType *> (data);
}
);
if (G_UNLIKELY (id == 0))
{
delete fnPtr;
return SourceTag();
}
fnPtr->second = make_shared<guint>(id);
return fnPtr->second;
}
static inline void
source_remove (const SourceTag &sourceTag)
{
if (auto sourceTagPtr = sourceTag.lock())
g_source_remove (*sourceTagPtr);
}
static inline SourceTag
invoke_later (const function<void ()> &task, gint priority = G_PRIORITY_DEFAULT)
{
return timeout_add (0, [task] {
task ();
return TimeoutResponse::Remove ();
}, priority);
}
} /* namespace xfce4 */
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