<refactor, feat>(ui): Text editor improvements.

1. Add binary display mode
2. Add information bar
3. Added character code recognition function.
4. Identify text encoding and line breaks
5. Count the number of characters
6. Code reconstruction

6 files changed, 303 insertions, 203 deletions

diff --git a/src/ui/widgets/EditorPage.cpp b/src/ui/widgets/EditorPage.cpp
deleted file mode 100644
index 8c26fe71..00000000
--- a/src/ui/widgets/EditorPage.cpp
+++ /dev/null
@@ -1,154 +0,0 @@
-/**
- * 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]><[email protected]> starting on May 12, 2021.
- *
- */
-
-#include "ui/widgets/EditorPage.h"
-
-#include <boost/filesystem.hpp>
-#include <utility>
-
-#include "ui/thread/FileReadThread.h"
-
-namespace GpgFrontend::UI {
-
-EditorPage::EditorPage(QString filePath, QWidget* parent)
-    : QWidget(parent), full_file_path_(std::move(filePath)) {
-  // Set the Textedit properties
-  textPage = new QTextEdit();
-  textPage->setAcceptRichText(false);
-
-  // Set the layout style
-  mainLayout = new QVBoxLayout();
-  mainLayout->setSpacing(0);
-  mainLayout->addWidget(textPage);
-  mainLayout->setContentsMargins(0, 0, 0, 0);
-  setLayout(mainLayout);
-
-  textPage->setFocus();
-
-  // Front in same width
-  this->setFont({"Courier"});
-  this->setAttribute(Qt::WA_DeleteOnClose);
-}
-
-const QString& EditorPage::getFilePath() const { return full_file_path_; }
-
-QTextEdit* EditorPage::getTextPage() { return textPage; }
-
-void EditorPage::setFilePath(const QString& filePath) {
-  full_file_path_ = filePath;
-}
-
-void EditorPage::showNotificationWidget(QWidget* widget,
-                                        const char* className) {
-  widget->setProperty(className, true);
-  mainLayout->addWidget(widget);
-}
-
-void EditorPage::closeNoteByClass(const char* className) {
-  QList<QWidget*> widgets = findChildren<QWidget*>();
-  for (QWidget* widget : widgets) {
-    if (widget->property(className) == true) {
-      widget->close();
-    }
-  }
-}
-
-void EditorPage::slotFormatGpgHeader() {
-  QString content = textPage->toPlainText();
-
-  // Get positions of the gpg-headers, if they exist
-  int start = content.indexOf(GpgFrontend::GpgConstants::PGP_SIGNED_BEGIN);
-  int startSig =
-      content.indexOf(GpgFrontend::GpgConstants::PGP_SIGNATURE_BEGIN);
-  int endSig = content.indexOf(GpgFrontend::GpgConstants::PGP_SIGNATURE_END);
-
-  if (start < 0 || startSig < 0 || endSig < 0 || signMarked) {
-    return;
-  }
-
-  signMarked = true;
-
-  // Set the fontstyle for the header
-  QTextCharFormat signFormat;
-  signFormat.setForeground(QBrush(QColor::fromRgb(80, 80, 80)));
-  signFormat.setFontPointSize(9);
-
-  // set font style for the signature
-  QTextCursor cursor(textPage->document());
-  cursor.setPosition(startSig, QTextCursor::MoveAnchor);
-  cursor.movePosition(QTextCursor::Right, QTextCursor::KeepAnchor, endSig);
-  cursor.setCharFormat(signFormat);
-
-  // set the font style for the header
-  int headEnd = content.indexOf("\n\n", start);
-  cursor.setPosition(start, QTextCursor::MoveAnchor);
-  cursor.movePosition(QTextCursor::Right, QTextCursor::KeepAnchor, headEnd);
-  cursor.setCharFormat(signFormat);
-}
-
-void EditorPage::ReadFile() {
-  LOG(INFO) << "Called";
-
-  read_done_ = false;
-
-  auto text_page = this->getTextPage();
-  text_page->setReadOnly(true);
-  auto thread = new FileReadThread(this->full_file_path_.toStdString());
-
-  connect(thread, &FileReadThread::sendReadBlock, this,
-          &EditorPage::slotInsertText);
-
-  connect(thread, &FileReadThread::readDone, this, [=]() {
-    LOG(INFO) << "thread read done";
-    text_page->document()->setModified(false);
-    text_page->setReadOnly(false);
-  });
-
-  connect(thread, &FileReadThread::finished, this, [=]() {
-    LOG(INFO) << "thread finished";
-    thread->deleteLater();
-    read_done_ = true;
-    read_hread_ = nullptr;
-  });
-
-  connect(this, &EditorPage::destroyed, [=]() {
-    LOG(INFO) << "request interruption for read thread";
-    thread->requestInterruption();
-    read_hread_ = nullptr;
-  });
-  this->read_hread_ = thread;
-  thread->start();
-}
-
-void EditorPage::slotInsertText(const QString& text) {
-  this->getTextPage()->insertPlainText(text);
-}
-void EditorPage::PrepareToDestroy() {
-  if (read_hread_) {
-    read_hread_->requestInterruption();
-    read_hread_ = nullptr;
-  }
-}
-
-}  // namespace GpgFrontend::UI
diff --git a/src/ui/widgets/InfoBoardWidget.h b/src/ui/widgets/InfoBoardWidget.h
index 8d37be6c..816da849 100644
--- a/src/ui/widgets/InfoBoardWidget.h
+++ b/src/ui/widgets/InfoBoardWidget.h
@@ -25,7 +25,7 @@
 #ifndef __VERIFYNOTIFICATION_H__
 #define __VERIFYNOTIFICATION_H__
 
-#include "EditorPage.h"
+#include "PlainTextEditorPage.h"
 #include "gpg/result_analyse/VerifyResultAnalyse.h"
 #include "ui/details/VerifyDetailsDialog.h"
 
diff --git a/src/ui/widgets/PlainTextEditorPage.cpp b/src/ui/widgets/PlainTextEditorPage.cpp
new file mode 100644
index 00000000..1a99c2a6
--- /dev/null
+++ b/src/ui/widgets/PlainTextEditorPage.cpp
@@ -0,0 +1,257 @@
+/**
+ * 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]><[email protected]> starting on May 12, 2021.
+ *
+ */
+
+#include "ui/widgets/PlainTextEditorPage.h"
+
+#include <boost/filesystem.hpp>
+#include <boost/format.hpp>
+#include <utility>
+
+#include "ui/encoding/TextEncodingDetect.h"
+#include "ui/thread/FileReadThread.h"
+#include "ui_PlainTextEditor.h"
+
+namespace GpgFrontend::UI {
+
+PlainTextEditorPage::PlainTextEditorPage(QString filePath, QWidget* parent)
+    : QWidget(parent),
+      ui(std::make_shared<Ui_PlainTextEditor>()),
+      full_file_path_(std::move(filePath)) {
+  ui->setupUi(this);
+
+  if (full_file_path_.isEmpty()) read_done_ = true;
+
+  ui->textPage->setFocus();
+  ui->loadingLabel->setHidden(true);
+
+  // Front in same width
+  this->setFont({"Courier"});
+  this->setAttribute(Qt::WA_DeleteOnClose);
+
+  this->ui->characterLabel->setText(_("0 character"));
+  this->ui->lfLabel->setText(_("None"));
+  this->ui->encodingLabel->setText(_("Binary"));
+
+  connect(ui->textPage, &QPlainTextEdit::textChanged, this, [=]() {
+    if (!read_done_) return;
+
+    auto text = ui->textPage->document()->toPlainText();
+    auto str = boost::format(_("%1% character(s)")) % text.size();
+    this->ui->characterLabel->setText(str.str().c_str());
+
+    detect_encoding(text.toStdString());
+  });
+
+  ui->loadingLabel->setText(_("Loading..."));
+}
+
+const QString& PlainTextEditorPage::getFilePath() const {
+  return full_file_path_;
+}
+
+QPlainTextEdit* PlainTextEditorPage::getTextPage() { return ui->textPage; }
+
+void PlainTextEditorPage::setFilePath(const QString& filePath) {
+  full_file_path_ = filePath;
+}
+
+void PlainTextEditorPage::showNotificationWidget(QWidget* widget,
+                                                 const char* className) {
+  widget->setProperty(className, true);
+  ui->verticalLayout->addWidget(widget);
+}
+
+void PlainTextEditorPage::closeNoteByClass(const char* className) {
+  QList<QWidget*> widgets = findChildren<QWidget*>();
+  for (QWidget* widget : widgets) {
+    if (widget->property(className) == true) {
+      widget->close();
+    }
+  }
+}
+
+void PlainTextEditorPage::slotFormatGpgHeader() {
+  QString content = ui->textPage->toPlainText();
+
+  // Get positions of the gpg-headers, if they exist
+  int start = content.indexOf(GpgFrontend::GpgConstants::PGP_SIGNED_BEGIN);
+  int startSig =
+      content.indexOf(GpgFrontend::GpgConstants::PGP_SIGNATURE_BEGIN);
+  int endSig = content.indexOf(GpgFrontend::GpgConstants::PGP_SIGNATURE_END);
+
+  if (start < 0 || startSig < 0 || endSig < 0 || signMarked) {
+    return;
+  }
+
+  signMarked = true;
+
+  // Set the fontstyle for the header
+  QTextCharFormat signFormat;
+  signFormat.setForeground(QBrush(QColor::fromRgb(80, 80, 80)));
+  signFormat.setFontPointSize(9);
+
+  // set font style for the signature
+  QTextCursor cursor(ui->textPage->document());
+  cursor.setPosition(startSig, QTextCursor::MoveAnchor);
+  cursor.movePosition(QTextCursor::Right, QTextCursor::KeepAnchor, endSig);
+  cursor.setCharFormat(signFormat);
+
+  // set the font style for the header
+  int headEnd = content.indexOf("\n\n", start);
+  cursor.setPosition(start, QTextCursor::MoveAnchor);
+  cursor.movePosition(QTextCursor::Right, QTextCursor::KeepAnchor, headEnd);
+  cursor.setCharFormat(signFormat);
+}
+
+void PlainTextEditorPage::ReadFile() {
+  LOG(INFO) << "called";
+
+  read_done_ = false;
+  read_bytes_ = 0;
+  ui->textPage->setEnabled(false);
+  ui->textPage->setReadOnly(true);
+  ui->textPage->blockSignals(true);
+  ui->loadingLabel->setHidden(false);
+  ui->textPage->document()->blockSignals(true);
+
+  auto text_page = this->getTextPage();
+  text_page->setReadOnly(true);
+  auto thread = new FileReadThread(this->full_file_path_.toStdString());
+
+  connect(thread, &FileReadThread::sendReadBlock, this,
+          &PlainTextEditorPage::slotInsertText);
+
+  connect(thread, &FileReadThread::readDone, this, [=]() {
+    LOG(INFO) << "thread read done";
+    if (!binary_mode_) {
+      text_page->setReadOnly(false);
+    }
+  });
+
+  connect(thread, &FileReadThread::finished, this, [=]() {
+    LOG(INFO) << "thread finished";
+    thread->deleteLater();
+    read_done_ = true;
+    read_thread_ = nullptr;
+    ui->textPage->setEnabled(true);
+    text_page->document()->setModified(false);
+    ui->textPage->blockSignals(false);
+    ui->textPage->document()->blockSignals(false);
+    ui->loadingLabel->setHidden(true);
+  });
+
+  connect(this, &PlainTextEditorPage::destroyed, [=]() {
+    LOG(INFO) << "request interruption for read thread";
+    thread->requestInterruption();
+    read_thread_ = nullptr;
+  });
+  this->read_thread_ = thread;
+  thread->start();
+}
+
+std::string binary_to_string(const std::string& source) {
+  static char syms[] = "0123456789ABCDEF";
+  std::stringstream ss;
+  for (unsigned char c : source)
+    ss << syms[((c >> 4) & 0xf)] << syms[c & 0xf] << " ";
+  return ss.str();
+}
+
+void PlainTextEditorPage::slotInsertText(const std::string& data) {
+  LOG(INFO) << "data size" << data.size();
+  read_bytes_ += data.size();
+  // If binary format is detected, the entire file is converted to binary format
+  // for display
+  bool if_last_binary_mode = binary_mode_;
+  if (!binary_mode_) {
+    detect_encoding(data);
+  }
+
+  if (binary_mode_) {
+    if (if_last_binary_mode != binary_mode_) {
+      auto text_buffer =
+          ui->textPage->document()->toRawText().toLocal8Bit().toStdString();
+      ui->textPage->clear();
+      this->getTextPage()->insertPlainText(
+          binary_to_string(text_buffer).c_str());
+      this->ui->lfLabel->setText("None");
+    }
+    this->getTextPage()->insertPlainText(binary_to_string(data).c_str());
+
+    auto str = boost::format(_("%1% byte(s)")) % read_bytes_;
+    this->ui->characterLabel->setText(str.str().c_str());
+  } else {
+    this->getTextPage()->insertPlainText(data.c_str());
+
+    auto text = this->getTextPage()->toPlainText();
+    auto str = boost::format(_("%1% character(s)")) % text.size();
+    this->ui->characterLabel->setText(str.str().c_str());
+    detect_cr_lf(text);
+  }
+}
+
+void PlainTextEditorPage::PrepareToDestroy() {
+  if (read_thread_) {
+    read_thread_->requestInterruption();
+    read_thread_ = nullptr;
+  }
+}
+
+void PlainTextEditorPage::detect_encoding(const std::string& data) {
+  AutoIt::Common::TextEncodingDetect text_detect;
+  AutoIt::Common::TextEncodingDetect::Encoding encoding =
+      text_detect.DetectEncoding((unsigned char*)(data.data()), data.size());
+
+  if (encoding == AutoIt::Common::TextEncodingDetect::None) {
+    binary_mode_ = true;
+    ui->encodingLabel->setText(_("Binary"));
+  } else if (encoding == AutoIt::Common::TextEncodingDetect::ASCII) {
+    ui->encodingLabel->setText(_("ASCII(7 bits)"));
+  } else if (encoding == AutoIt::Common::TextEncodingDetect::ANSI) {
+    ui->encodingLabel->setText(_("ASCII(8 bits)"));
+  } else if (encoding == AutoIt::Common::TextEncodingDetect::UTF8_BOM ||
+             encoding == AutoIt::Common::TextEncodingDetect::UTF8_NOBOM) {
+    ui->encodingLabel->setText(_("UTF-8"));
+  } else if (encoding == AutoIt::Common::TextEncodingDetect::UTF16_LE_BOM ||
+             encoding == AutoIt::Common::TextEncodingDetect::UTF16_LE_NOBOM) {
+    ui->encodingLabel->setText(_("UTF-16"));
+  } else if (encoding == AutoIt::Common::TextEncodingDetect::UTF16_BE_BOM ||
+             encoding == AutoIt::Common::TextEncodingDetect::UTF16_BE_NOBOM) {
+    ui->encodingLabel->setText(_("UTF-16(BE)"));
+  }
+}
+
+void PlainTextEditorPage::detect_cr_lf(const QString& data) {
+  if (binary_mode_) {
+    this->ui->lfLabel->setText("None");
+    return;
+  }
+  if (data.contains("\r\n")) {
+    this->ui->lfLabel->setText("CRLF");
+  } else {
+    this->ui->lfLabel->setText("LF");
+  }
+}
+
+}  // namespace GpgFrontend::UI
diff --git a/src/ui/widgets/EditorPage.h b/src/ui/widgets/PlainTextEditorPage.h
index d1bc1ac2..24823c06 100644
--- a/src/ui/widgets/EditorPage.h
+++ b/src/ui/widgets/PlainTextEditorPage.h
@@ -28,12 +28,7 @@
 #include "gpg/GpgConstants.h"
 #include "ui/GpgFrontendUI.h"
 
-QT_BEGIN_NAMESPACE
-class QVBoxLayout;
-class QHBoxLayout;
-class QString;
-class QLabel;
-QT_END_NAMESPACE
+class Ui_PlainTextEditor;
 
 namespace GpgFrontend::UI {
 
@@ -41,7 +36,7 @@ namespace GpgFrontend::UI {
  * @brief Class for handling a single tab of the tabwidget
  *
  */
-class EditorPage : public QWidget {
+class PlainTextEditorPage : public QWidget {
   Q_OBJECT
  public:
   /**
@@ -50,7 +45,8 @@ class EditorPage : public QWidget {
    * @param filePath Path of the file handled in this tab
    * @param parent Pointer to the parent widget
    */
-  explicit EditorPage(QString filePath = "", QWidget* parent = nullptr);
+  explicit PlainTextEditorPage(QString filePath = "",
+                               QWidget* parent = nullptr);
 
   /**
    * @details Get the filepath of the currently activated tab.
@@ -67,7 +63,7 @@ class EditorPage : public QWidget {
   /**
    * @details Return pointer tp the textedit of the currently activated tab.
    */
-  QTextEdit* getTextPage();
+  QPlainTextEdit* getTextPage();
 
   /**
    * @details Show additional widget at buttom of currently active tab
@@ -91,12 +87,17 @@ class EditorPage : public QWidget {
   void PrepareToDestroy();
 
  private:
-  QTextEdit* textPage;     /** The textedit of the tab */
-  QVBoxLayout* mainLayout; /** The layout for the tab */
+  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_hread_ = nullptr;
+  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:
 
@@ -105,7 +106,7 @@ class EditorPage : public QWidget {
    */
   void slotFormatGpgHeader();
 
-  void slotInsertText(const QString& text);
+  void slotInsertText(const std::string& data);
 };
 
 }  // namespace GpgFrontend::UI
diff --git a/src/ui/widgets/TextEdit.cpp b/src/ui/widgets/TextEdit.cpp
index be6ec181..a8ff8d73 100644
--- a/src/ui/widgets/TextEdit.cpp
+++ b/src/ui/widgets/TextEdit.cpp
@@ -50,7 +50,7 @@ TextEdit::TextEdit(QWidget* parent) : QWidget(parent) {
 void TextEdit::slotNewTab() {
   QString header = _("untitled") + QString::number(++countPage) + ".txt";
 
-  auto* page = new EditorPage();
+  auto* page = new PlainTextEditorPage();
   auto index = tabWidget->addTab(page, header);
   tabWidget->setTabIcon(index, QIcon(":file.png"));
   tabWidget->setCurrentIndex(tabWidget->count() - 1);
@@ -80,11 +80,11 @@ void TextEdit::slotOpenFile(QString& path) {
   LOG(INFO) << "path" << path.toStdString();
   auto result = file.open(QIODevice::ReadOnly | QIODevice::Text);
   if (result) {
-    auto* page = new EditorPage(path);
+    auto* page = new PlainTextEditorPage(path);
     connect(page->getTextPage()->document(),
             &QTextDocument::modificationChanged, this,
             &TextEdit::slotShowModified);
-    
+
     QApplication::setOverrideCursor(Qt::WaitCursor);
     auto index = tabWidget->addTab(page, strippedName(path));
     tabWidget->setTabIcon(index, QIcon(":file.png"));
@@ -111,7 +111,7 @@ void TextEdit::slotOpen() {
       QFile file(fileName);
 
       if (file.open(QIODevice::ReadOnly | QIODevice::Text)) {
-        auto* page = new EditorPage(fileName);
+        auto* page = new PlainTextEditorPage(fileName);
 
         QTextStream in(&file);
         QApplication::setOverrideCursor(Qt::WaitCursor);
@@ -165,7 +165,7 @@ bool TextEdit::saveFile(const QString& fileName) {
   QFile file(fileName);
 
   if (file.open(QIODevice::WriteOnly | QIODevice::Text)) {
-    EditorPage* page = slotCurPageTextEdit();
+    PlainTextEditorPage* page = slotCurPageTextEdit();
 
     QTextStream outputStream(&file);
     QApplication::setOverrideCursor(Qt::WaitCursor);
@@ -197,7 +197,7 @@ bool TextEdit::slotSaveAs() {
     return true;
   }
 
-  EditorPage* page = slotCurPageTextEdit();
+  PlainTextEditorPage* page = slotCurPageTextEdit();
   QString path;
   if (!page->getFilePath().isEmpty()) {
     path = page->getFilePath();
@@ -250,7 +250,7 @@ void TextEdit::removeTab(int index) {
  * If it returns false, the close event should be aborted.
  */
 bool TextEdit::maybeSaveCurrentTab(bool askToSave) {
-  EditorPage* page = slotCurPageTextEdit();
+  PlainTextEditorPage* page = slotCurPageTextEdit();
   // if this page is no textedit, there should be nothing to save
   if (page == nullptr) {
     return true;
@@ -352,13 +352,8 @@ bool TextEdit::maybeSaveAnyTab() {
   return false;
 }
 
-QTextEdit* TextEdit::curTextPage() const {
-  auto* curTextPage = qobject_cast<EditorPage*>(tabWidget->currentWidget());
-  if (curTextPage != nullptr) {
-    return curTextPage->getTextPage();
-  } else {
-    return nullptr;
-  }
+PlainTextEditorPage* TextEdit::curTextPage() const {
+  return qobject_cast<PlainTextEditorPage*>(tabWidget->currentWidget());
 }
 
 FilePage* TextEdit::curFilePage() const {
@@ -372,8 +367,9 @@ FilePage* TextEdit::curFilePage() const {
 
 int TextEdit::tabCount() const { return tabWidget->count(); }
 
-EditorPage* TextEdit::slotCurPageTextEdit() const {
-  auto* curPage = qobject_cast<EditorPage*>(tabWidget->currentWidget());
+PlainTextEditorPage* TextEdit::slotCurPageTextEdit() const {
+  auto* curPage =
+      qobject_cast<PlainTextEditorPage*>(tabWidget->currentWidget());
   return curPage;
 }
 
@@ -387,7 +383,7 @@ void TextEdit::slotQuote() const {
     return;
   }
 
-  QTextCursor cursor(curTextPage()->document());
+  QTextCursor cursor(curTextPage()->getTextPage()->document());
 
   // beginEditBlock and endEditBlock() let operation look like single undo/redo
   // operation
@@ -405,10 +401,10 @@ void TextEdit::slotQuote() const {
 }
 
 void TextEdit::slotFillTextEditWithText(const QString& text) const {
-  QTextCursor cursor(curTextPage()->document());
+  QTextCursor cursor(curTextPage()->getTextPage()->document());
   cursor.beginEditBlock();
-  this->curTextPage()->selectAll();
-  this->curTextPage()->insertPlainText(text);
+  this->curTextPage()->getTextPage()->selectAll();
+  this->curTextPage()->getTextPage()->insertPlainText(text);
   cursor.endEditBlock();
 }
 
@@ -425,7 +421,7 @@ void TextEdit::loadFile(const QString& fileName) {
   }
   QTextStream in(&file);
   QApplication::setOverrideCursor(Qt::WaitCursor);
-  curTextPage()->setPlainText(in.readAll());
+  curTextPage()->getTextPage()->setPlainText(in.readAll());
   QApplication::restoreOverrideCursor();
   slotCurPageTextEdit()->setFilePath(fileName);
   tabWidget->setTabText(tabWidget->currentIndex(), strippedName(fileName));
@@ -445,7 +441,7 @@ void TextEdit::slotPrint() {
 #ifndef QT_NO_PRINTER
   QTextDocument* document;
   if (curTextPage() != nullptr) {
-    document = curTextPage()->document();
+    document = curTextPage()->getTextPage()->document();
   }
   QPrinter printer;
 
@@ -464,7 +460,7 @@ void TextEdit::slotShowModified() const {
   QString title = tabWidget->tabText(index);
   // if doc is modified now, add leading * to title,
   // otherwise remove the leading * from the title
-  if (curTextPage()->document()->isModified()) {
+  if (curTextPage()->getTextPage()->document()->isModified()) {
     tabWidget->setTabText(index, title.prepend("* "));
   } else {
     tabWidget->setTabText(index, title.remove(0, 2));
@@ -494,7 +490,7 @@ QHash<int, QString> TextEdit::unsavedDocuments() const {
                                     // gedit like "unsaved changed"-dialog
 
   for (int i = 0; i < tabWidget->count(); i++) {
-    auto* ep = qobject_cast<EditorPage*>(tabWidget->widget(i));
+    auto* ep = qobject_cast<PlainTextEditorPage*>(tabWidget->widget(i));
     if (ep != nullptr && ep->ReadDone() &&
         ep->getTextPage()->document()->isModified()) {
       QString doc_name = tabWidget->tabText(i);
@@ -513,7 +509,7 @@ void TextEdit::slotCut() const {
     return;
   }
 
-  curTextPage()->cut();
+  curTextPage()->getTextPage()->cut();
 }
 
 void TextEdit::slotCopy() const {
@@ -522,7 +518,7 @@ void TextEdit::slotCopy() const {
   }
 
   if (curTextPage() != nullptr) {
-    curTextPage()->copy();
+    curTextPage()->getTextPage()->copy();
   }
 }
 
@@ -531,7 +527,7 @@ void TextEdit::slotPaste() const {
     return;
   }
 
-  curTextPage()->paste();
+  curTextPage()->getTextPage()->paste();
 }
 
 void TextEdit::slotUndo() const {
@@ -539,7 +535,7 @@ void TextEdit::slotUndo() const {
     return;
   }
 
-  curTextPage()->undo();
+  curTextPage()->getTextPage()->undo();
 }
 
 void TextEdit::slotRedo() const {
@@ -547,7 +543,7 @@ void TextEdit::slotRedo() const {
     return;
   }
 
-  curTextPage()->redo();
+  curTextPage()->getTextPage()->redo();
 }
 
 void TextEdit::slotZoomIn() const {
@@ -556,7 +552,7 @@ void TextEdit::slotZoomIn() const {
   }
 
   if (curTextPage() != nullptr) {
-    curTextPage()->zoomIn();
+    curTextPage()->getTextPage()->zoomIn();
   }
 }
 
@@ -566,7 +562,7 @@ void TextEdit::slotZoomOut() const {
   }
 
   if (curTextPage() != nullptr) {
-    curTextPage()->zoomOut();
+    curTextPage()->getTextPage()->zoomOut();
   }
 }
 
@@ -574,7 +570,7 @@ void TextEdit::slotSelectAll() const {
   if (tabWidget->count() == 0 || curTextPage() == nullptr) {
     return;
   }
-  curTextPage()->selectAll();
+  curTextPage()->getTextPage()->selectAll();
 }
 
 void TextEdit::slotFilePagePathChanged(const QString& path) const {
diff --git a/src/ui/widgets/TextEdit.h b/src/ui/widgets/TextEdit.h
index e877ccc1..c1f44969 100644
--- a/src/ui/widgets/TextEdit.h
+++ b/src/ui/widgets/TextEdit.h
@@ -26,9 +26,9 @@
 #define __TEXTEDIT_H__
 
 #include "ui/QuitDialog.h"
-#include "ui/widgets/EditorPage.h"
 #include "ui/widgets/FilePage.h"
 #include "ui/widgets/HelpPage.h"
+#include "ui/widgets/PlainTextEditorPage.h"
 
 namespace GpgFrontend::UI {
 /**
@@ -66,7 +66,7 @@ class TextEdit : public QWidget {
    * @return \li reference to QTextEdit if tab has one
    *         \li 0 otherwise (e.g. if helppage)
    */
-  [[nodiscard]] QTextEdit* curTextPage() const;
+  [[nodiscard]] PlainTextEditorPage* curTextPage() const;
 
   [[nodiscard]] FilePage* curFilePage() const;
 
@@ -84,7 +84,7 @@ class TextEdit : public QWidget {
    * @details Return pointer to the currently activated text edit tab page.
    *
    */
-  EditorPage* slotCurPageTextEdit() const;
+  PlainTextEditorPage* slotCurPageTextEdit() const;
 
   /**
    * @details Return pointer to the currently activated file treeview tab page.