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diff --git a/src/ui/widgets/PlainTextEditorPage.h b/src/ui/widgets/PlainTextEditorPage.h
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+++ b/src/ui/widgets/PlainTextEditorPage.h
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+/**
+ * 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.
+ *
+ * Foobar 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 Foobar.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The initial version of the source code is inherited from gpg4usb-team.
+ * Their source code version also complies with GNU General Public License.
+ *
+ * The source code version of this software was modified and released
+ * by Saturneric<[email protected]> starting on May 12, 2021.
+ *
+ */
+
+#ifndef __EDITORPAGE_H__
+#define __EDITORPAGE_H__
+
+#include "gpg/GpgConstants.h"
+#include "ui/GpgFrontendUI.h"
+
+class Ui_PlainTextEditor;
+
+namespace GpgFrontend::UI {
+
+/**
+ * @brief Class for handling a single tab of the tabwidget
+ *
+ */
+class PlainTextEditorPage : public QWidget {
+  Q_OBJECT
+ public:
+  /**
+   * @details Add layout and add plaintextedit
+   *
+   * @param filePath Path of the file handled in this tab
+   * @param parent Pointer to the parent widget
+   */
+  explicit PlainTextEditorPage(QString filePath = "",
+                               QWidget* parent = nullptr);
+
+  /**
+   * @details Get the filepath of the currently activated tab.
+   */
+  [[nodiscard]] const QString& getFilePath() const;
+
+  /**
+   * @details Set filepath of currently activated tab.
+   *
+   * @param filePath The path to be set
+   */
+  void setFilePath(const QString& filePath);
+
+  /**
+   * @details Return pointer tp the textedit of the currently activated tab.
+   */
+  QPlainTextEdit* getTextPage();
+
+  /**
+   * @details Show additional widget at buttom of currently active tab
+   *
+   * @param widget The widget to be added
+   * @param className The name to handle the added widget
+   */
+  void showNotificationWidget(QWidget* widget, const char* className);
+
+  /**
+   * @details Hide all widgets with the given className
+   *
+   * @param className The classname of the widgets to hide
+   */
+  void closeNoteByClass(const char* className);
+
+  void ReadFile();
+
+  [[nodiscard]] bool ReadDone() const { return this->read_done_; }
+
+  void PrepareToDestroy();
+
+ private:
+  std::shared_ptr<Ui_PlainTextEditor> ui;
+  QString full_file_path_; /** The path to the file handled in the tab */
+  bool signMarked{}; /** true, if the signed header is marked, false if not */
+  bool read_done_ = false;
+  QThread* read_thread_ = nullptr;
+  bool binary_mode_ = false;
+  size_t read_bytes_ = 0;
+
+  void detect_encoding(const std::string& data);
+
+  void detect_cr_lf(const QString& data);
+
+ private slots:
+
+  /**
+   * @details Format the gpg header in another font-style
+   */
+  void slotFormatGpgHeader();
+
+  void slotInsertText(const std::string& data);
+};
+
+}  // namespace GpgFrontend::UI
+
+#endif  // __EDITORPAGE_H__