refactor: clean up core's codes

1 files changed, 80 insertions, 0 deletions

diff --git a/src/core/function/basic/ChannelObject.h b/src/core/function/basic/ChannelObject.h
new file mode 100644
index 00000000..9d247e6a
--- /dev/null
+++ b/src/core/function/basic/ChannelObject.h
@@ -0,0 +1,80 @@
+/**
+ * Copyright (C) 2021 Saturneric <[email protected]>
+ *
+ * This file is part of GpgFrontend.
+ *
+ * GpgFrontend 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GpgFrontend 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 GpgFrontend. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The initial version of the source code is inherited from
+ * the gpg4usb project, which is under GPL-3.0-or-later.
+ *
+ * All the source code of GpgFrontend was modified and released by
+ * Saturneric <[email protected]> starting on May 12, 2021.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ */
+
+#pragma once
+
+namespace GpgFrontend {
+
+static constexpr int kGpgFrontendDefaultChannel =
+    0;  ///< the default channel id
+
+/**
+ * @brief object which in channel system is called "channel"
+ *
+ */
+class GPGFRONTEND_CORE_EXPORT ChannelObject {
+ public:
+  /**
+   * @brief Construct a new Default Channel Object object
+   *
+   */
+  ChannelObject() noexcept;
+
+  /**
+   * @brief Construct a new Channel Object object
+   *
+   * @param channel
+   */
+  explicit ChannelObject(int channel);
+
+  /**
+   * @brief Get the Default Channel object
+   *
+   * @return int
+   */
+  static auto GetDefaultChannel() -> int;
+
+  /**
+   * @brief Get the Channel object
+   *
+   * @return int
+   */
+  [[nodiscard]] auto GetChannel() const -> int;
+
+  /**
+   * @brief Set the Channel object
+   *
+   * @param channel
+   */
+  void SetChannel(int channel);
+
+ private:
+  int channel_ = kGpgFrontendDefaultChannel;  ///< The channel id
+};
+
+}  // namespace GpgFrontend
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