Merge pull request #70 from saturneric/dev/2.0.8/saturnericv2.0.9

Develop 2.0.9.1

84 files changed, 1172 insertions, 533 deletions

diff --git a/src/ui/CMakeLists.txt b/src/ui/CMakeLists.txt
index 6e3ee4be..24158e27 100644
--- a/src/ui/CMakeLists.txt
+++ b/src/ui/CMakeLists.txt
@@ -26,16 +26,16 @@
 
 # tracking source files
 aux_source_directory(. UI_SOURCE)
-aux_source_directory(keypair_details UI_SOURCE)
+aux_source_directory(dialog/keypair_details UI_SOURCE)
 aux_source_directory(widgets UI_SOURCE)
-aux_source_directory(key_generate UI_SOURCE)
+aux_source_directory(dialog/key_generate UI_SOURCE)
 aux_source_directory(main_window UI_SOURCE)
-aux_source_directory(help UI_SOURCE)
-aux_source_directory(settings UI_SOURCE)
+aux_source_directory(dialog/help UI_SOURCE)
+aux_source_directory(dialog/settings UI_SOURCE)
 aux_source_directory(thread UI_SOURCE)
-aux_source_directory(details UI_SOURCE)
+aux_source_directory(dialog/details UI_SOURCE)
 aux_source_directory(struct UI_SOURCE)
-aux_source_directory(import_export UI_SOURCE)
+aux_source_directory(dialog/import_export UI_SOURCE)
 aux_source_directory(dialog UI_SOURCE)
 
 # define libgpgfrontend_ui
diff --git a/src/ui/GpgFrontendApplication.cpp b/src/ui/GpgFrontendApplication.cpp
index 4cb50b43..b1c5beed 100644
--- a/src/ui/GpgFrontendApplication.cpp
+++ b/src/ui/GpgFrontendApplication.cpp
@@ -30,7 +30,7 @@
 
 namespace GpgFrontend::UI {
 
-GpgFrontendApplication::GpgFrontendApplication(int &argc, char **argv)
+GpgFrontendApplication::GpgFrontendApplication(int &argc, char *argv[])
     : QApplication(argc, argv) {
 #ifndef MACOS
   this->setWindowIcon(QIcon(":gpgfrontend.png"));
@@ -57,12 +57,15 @@ GpgFrontendApplication *GpgFrontendApplication::GetInstance(int argc,
                                                             char *argv[],
                                                             bool new_instance) {
   static GpgFrontendApplication *instance = nullptr;
+  static int static_argc = argc;
+  static char **static_argv = argv;
+
   if (new_instance || !instance) {
     if (instance != nullptr) {
       instance->quit();
       delete instance;
     }
-    instance = new GpgFrontendApplication(argc, argv);
+    instance = new GpgFrontendApplication(static_argc, static_argv);
   }
   return instance;
 }
diff --git a/src/ui/GpgFrontendApplication.h b/src/ui/GpgFrontendApplication.h
index 52a0a610..06338bb6 100644
--- a/src/ui/GpgFrontendApplication.h
+++ b/src/ui/GpgFrontendApplication.h
@@ -40,7 +40,7 @@ class GPGFRONTEND_UI_EXPORT GpgFrontendApplication : public QApplication {
    * @param argc
    * @param argv
    */
-  explicit GpgFrontendApplication(int &argc, char **argv);
+  explicit GpgFrontendApplication(int &argc, char *argv[]);
 
   /**
    * @brief Destroy the GpgFrontend Application object
diff --git a/src/ui/GpgFrontendUIInit.cpp b/src/ui/GpgFrontendUIInit.cpp
index 022f0748..5cbca31b 100644
--- a/src/ui/GpgFrontendUIInit.cpp
+++ b/src/ui/GpgFrontendUIInit.cpp
@@ -103,8 +103,8 @@ void InitGpgFrontendUI(QApplication* app) {
 
   // show the loading window
   waiting_dialog->setModal(true);
-  waiting_dialog->show();
   waiting_dialog->setFocus();
+  waiting_dialog->show();
 
   // new local event looper
   QEventLoop looper;
diff --git a/src/ui/UserInterfaceUtils.cpp b/src/ui/UserInterfaceUtils.cpp
index adcbd6ff..586d72ab 100644
--- a/src/ui/UserInterfaceUtils.cpp
+++ b/src/ui/UserInterfaceUtils.cpp
@@ -276,6 +276,9 @@ void CommonUtils::SlotImportKeyFromKeyServer(
 
       const int target_key_server_index =
           key_server_json.Check("default_server", 0);
+      if (target_key_server_index >= key_server_list.size()) {
+        throw std::runtime_error("default_server index out of range");
+      }
       target_keyserver =
           key_server_list[target_key_server_index].get<std::string>();
 
diff --git a/src/ui/UserInterfaceUtils.h b/src/ui/UserInterfaceUtils.h
index bfd8a3ae..bcfa28d2 100644
--- a/src/ui/UserInterfaceUtils.h
+++ b/src/ui/UserInterfaceUtils.h
@@ -110,6 +110,16 @@ void process_operation(
 /**
  * @brief
  *
+ * @param parent
+ * @param key_id
+ * @param key_server
+ */
+void import_key_from_keyserver(QWidget* parent, const std::string& key_id,
+                               const std::string& key_server);
+
+/**
+ * @brief
+ *
  */
 class CommonUtils : public QWidget {
   Q_OBJECT
diff --git a/src/ui/dialog/GeneralDialog.cpp b/src/ui/dialog/GeneralDialog.cpp
new file mode 100644
index 00000000..d07c2497
--- /dev/null
+++ b/src/ui/dialog/GeneralDialog.cpp
@@ -0,0 +1,88 @@
+/*
+ * Copyright (c) 2022. Saturneric
+ *
+ *  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
+ */
+
+#include "GeneralDialog.h"
+
+#include "ui/struct/SettingsObject.h"
+
+GpgFrontend::UI::GeneralDialog::GeneralDialog(std::string name, QWidget *parent)
+    : name_(std::move(name)), QDialog(parent) {
+  slot_restore_settings();
+  connect(this, &QDialog::finished, this, &GeneralDialog::slot_save_settings);
+}
+
+GpgFrontend::UI::GeneralDialog::~GeneralDialog() = default;
+
+void GpgFrontend::UI::GeneralDialog::slot_restore_settings() noexcept {
+  try {
+    LOG(INFO) << name_ << _("Called");
+
+    SettingsObject general_windows_state(name_ + "_dialog_state");
+
+    bool window_save = general_windows_state.Check("window_save", true);
+
+    // Restore window size & location
+    if (window_save) {
+      int x = general_windows_state.Check("window_pos").Check("x", 100),
+          y = general_windows_state.Check("window_pos").Check("y", 100);
+
+      this->move({x, y});
+      pos_ = {x, y};
+
+      int width =
+              general_windows_state.Check("window_size").Check("width", 400),
+          height =
+              general_windows_state.Check("window_size").Check("height", 247);
+
+      this->resize({width, height});
+      size_ = {width, height};
+
+    }
+
+  } catch (...) {
+    LOG(ERROR) << name_ << "error";
+  }
+}
+
+void GpgFrontend::UI::GeneralDialog::slot_save_settings() noexcept {
+  try {
+    LOG(INFO) << name_ << _("Called");
+
+    SettingsObject general_windows_state(name_ + "_dialog_state");
+
+    // window position and size
+    general_windows_state["window_pos"]["x"] = pos().x();
+    general_windows_state["window_pos"]["y"] = pos().y();
+
+    general_windows_state["window_size"]["width"] = size_.width();
+    general_windows_state["window_size"]["height"] = size_.height();
+    general_windows_state["window_save"] = true;
+
+  } catch (...) {
+    LOG(ERROR) << name_ << "error";
+  }
+}
diff --git a/src/ui/dialog/GeneralDialog.h b/src/ui/dialog/GeneralDialog.h
new file mode 100644
index 00000000..ca480c8b
--- /dev/null
+++ b/src/ui/dialog/GeneralDialog.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2022. Saturneric
+ *
+ *  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
+ */
+
+#ifndef GPGFRONTEND_GENERALDIALOG_H
+#define GPGFRONTEND_GENERALDIALOG_H
+
+#include "ui/GpgFrontendUI.h"
+
+namespace GpgFrontend::UI {
+
+class GeneralDialog : public QDialog {
+ public:
+  /**
+   *
+   * @param name
+   */
+  explicit GeneralDialog(std::string name, QWidget* parent = nullptr);
+
+  /**
+   *
+   */
+  ~GeneralDialog() override;
+
+ private slots:
+  /**
+   *
+   */
+  void slot_restore_settings() noexcept;
+
+  /**
+   *
+   */
+  void slot_save_settings() noexcept;
+
+ private:
+  std::string name_;  ///<
+  QPoint pos_;        ///<
+  QSize size_;        ///<
+};
+}  // namespace GpgFrontend::UI
+
+#endif  // GPGFRONTEND_GENERALDIALOG_H
diff --git a/src/ui/dialog/QuitDialog.cpp b/src/ui/dialog/QuitDialog.cpp
index da0be488..87b1c1e1 100755
--- a/src/ui/dialog/QuitDialog.cpp
+++ b/src/ui/dialog/QuitDialog.cpp
@@ -33,7 +33,7 @@
 namespace GpgFrontend::UI {
 
 QuitDialog::QuitDialog(QWidget* parent, const QHash<int, QString>& unsavedDocs)
-    : QDialog(parent) {
+    : GeneralDialog("quit_dialog", parent) {
   setWindowTitle(_("Unsaved Files"));
   setModal(true);
   discarded_ = false;
@@ -111,7 +111,7 @@ QuitDialog::QuitDialog(QWidget* parent, const QHash<int, QString>& unsavedDocs)
   connect(buttonBox, &QDialogButtonBox::accepted, this, &QuitDialog::accept);
   connect(buttonBox, &QDialogButtonBox::rejected, this, &QuitDialog::reject);
   QPushButton* btnNoKey = buttonBox->button(QDialogButtonBox::Discard);
-  connect(btnNoKey, &QPushButton::clicked, this,&QuitDialog::slot_my_discard);
+  connect(btnNoKey, &QPushButton::clicked, this, &QuitDialog::slot_my_discard);
 
   /*
    *  Set the layout
diff --git a/src/ui/dialog/QuitDialog.h b/src/ui/dialog/QuitDialog.h
index 2d09790b..2fd9e382 100755
--- a/src/ui/dialog/QuitDialog.h
+++ b/src/ui/dialog/QuitDialog.h
@@ -30,6 +30,7 @@
 #define __QUITDIALOG_H__
 
 #include "ui/GpgFrontendUI.h"
+#include "ui/dialog/GeneralDialog.h"
 
 namespace GpgFrontend::UI {
 
@@ -37,7 +38,7 @@ namespace GpgFrontend::UI {
  * @brief
  *
  */
-class QuitDialog : public QDialog {
+class QuitDialog : public GeneralDialog {
   Q_OBJECT
 
  public:
diff --git a/src/ui/widgets/SignersPicker.cpp b/src/ui/dialog/SignersPicker.cpp
index 75f6b2ba..a670e514 100644
--- a/src/ui/widgets/SignersPicker.cpp
+++ b/src/ui/dialog/SignersPicker.cpp
@@ -1,7 +1,7 @@
-/**
- * Copyright (C) 2021 Saturneric
+/*
+ * Copyright (c) 2022. Saturneric
  *
- * This file is part of GpgFrontend.
+ *  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
@@ -23,18 +23,24 @@
  * Saturneric<[email protected]> starting on May 12, 2021.
  *
  * SPDX-License-Identifier: GPL-3.0-or-later
- *
  */
 
-#include "ui/widgets/SignersPicker.h"
+#include "SignersPicker.h"
 
 #include "ui/widgets/KeyList.h"
 
 namespace GpgFrontend::UI {
 
-SignersPicker::SignersPicker(QWidget* parent) : QDialog(parent) {
+SignersPicker::SignersPicker(QWidget* parent)
+    : GeneralDialog(typeid(SignersPicker).name(), parent) {
   auto confirm_button = new QPushButton(_("Confirm"));
-  connect(confirm_button, &QPushButton::clicked, this, &SignersPicker::accept);
+  auto cancel_button = new QPushButton(_("Cancel"));
+
+  connect(confirm_button, &QPushButton::clicked, [=]() {
+    this->accepted_ = true;
+  });
+  connect(confirm_button, &QPushButton::clicked, this, &QDialog::accept);
+  connect(cancel_button, &QPushButton::clicked, this, &QDialog::reject);
 
   /*Setup KeyList*/
   key_list_ = new KeyList(false, this);
@@ -55,6 +61,7 @@ SignersPicker::SignersPicker(QWidget* parent) : QDialog(parent) {
       "\n" +
       _("If no key is selected, the default key will be used for signing.")));
   vbox2->addWidget(confirm_button);
+  vbox2->addWidget(cancel_button);
   vbox2->addStretch(0);
   setLayout(vbox2);
 
@@ -71,4 +78,6 @@ GpgFrontend::KeyIdArgsListPtr SignersPicker::GetCheckedSigners() {
   return key_list_->GetPrivateChecked();
 }
 
+bool SignersPicker::GetStatus() const { return this->accepted_; }
+
 }  // namespace GpgFrontend::UI
diff --git a/src/ui/widgets/SignersPicker.h b/src/ui/dialog/SignersPicker.h
index 30f872f8..5533f9d8 100644
--- a/src/ui/widgets/SignersPicker.h
+++ b/src/ui/dialog/SignersPicker.h
@@ -1,7 +1,7 @@
-/**
- * Copyright (C) 2021 Saturneric
+/*
+ * Copyright (c) 2022. Saturneric
  *
- * This file is part of GpgFrontend.
+ *  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
@@ -23,13 +23,13 @@
  * Saturneric<[email protected]> starting on May 12, 2021.
  *
  * SPDX-License-Identifier: GPL-3.0-or-later
- *
  */
 
 #ifndef GPGFRONTEND_ZH_CN_TS_SIGNERSPIRCKER_H
 #define GPGFRONTEND_ZH_CN_TS_SIGNERSPIRCKER_H
 
 #include "GpgFrontendUI.h"
+#include "ui/dialog//GeneralDialog.h"
 
 namespace GpgFrontend::UI {
 
@@ -39,7 +39,7 @@ class KeyList;
  * @brief
  *
  */
-class SignersPicker : public QDialog {
+class SignersPicker : public GeneralDialog {
   Q_OBJECT
 
  public:
@@ -57,8 +57,15 @@ class SignersPicker : public QDialog {
    */
   GpgFrontend::KeyIdArgsListPtr GetCheckedSigners();
 
+  /**
+   *
+   * @return
+   */
+  [[nodiscard]] bool GetStatus() const;
+
  private:
   KeyList* key_list_;  ///<
+  bool accepted_ = false;
 };
 
 }  // namespace GpgFrontend::UI
diff --git a/src/ui/dialog/Wizard.h b/src/ui/dialog/Wizard.h
index eb093550..879dc5d9 100644
--- a/src/ui/dialog/Wizard.h
+++ b/src/ui/dialog/Wizard.h
@@ -30,10 +30,10 @@
 #define WIZARD_H
 
 #include "core/GpgConstants.h"
+#include "main_window/KeyMgmt.h"
 #include "ui/GpgFrontendUI.h"
-#include "ui/KeyMgmt.h"
-#include "ui/key_generate/KeygenDialog.h"
-#include "ui/settings/SettingsDialog.h"
+#include "ui/dialog/key_generate/KeygenDialog.h"
+#include "ui/dialog/settings/SettingsDialog.h"
 
 namespace GpgFrontend::UI {
 
diff --git a/src/ui/details/SignatureDetailsDialog.cpp b/src/ui/dialog/details/SignatureDetailsDialog.cpp
index a3ad03b3..a3ad03b3 100644
--- a/src/ui/details/SignatureDetailsDialog.cpp
+++ b/src/ui/dialog/details/SignatureDetailsDialog.cpp
diff --git a/src/ui/details/SignatureDetailsDialog.h b/src/ui/dialog/details/SignatureDetailsDialog.h
index 847b320b..7b01d054 100644
--- a/src/ui/details/SignatureDetailsDialog.h
+++ b/src/ui/dialog/details/SignatureDetailsDialog.h
@@ -28,6 +28,7 @@
 
 #ifndef GPGFRONTEND_SIGNATUREDETAILSDIALOG_H
 #define GPGFRONTEND_SIGNATUREDETAILSDIALOG_H
+
 #include "ui/GpgFrontendUI.h"
 
 class SignatureDetailsDialog : public QDialog {
diff --git a/src/ui/details/VerifyDetailsDialog.cpp b/src/ui/dialog/details/VerifyDetailsDialog.cpp
index d2af4ee1..d2af4ee1 100644
--- a/src/ui/details/VerifyDetailsDialog.cpp
+++ b/src/ui/dialog/details/VerifyDetailsDialog.cpp
diff --git a/src/ui/details/VerifyDetailsDialog.h b/src/ui/dialog/details/VerifyDetailsDialog.h
index 97e2cc2d..97e2cc2d 100644
--- a/src/ui/details/VerifyDetailsDialog.h
+++ b/src/ui/dialog/details/VerifyDetailsDialog.h
diff --git a/src/ui/help/AboutDialog.cpp b/src/ui/dialog/help/AboutDialog.cpp
index e8fbeb1b..6b6e4356 100644
--- a/src/ui/help/AboutDialog.cpp
+++ b/src/ui/dialog/help/AboutDialog.cpp
@@ -26,39 +26,43 @@
  *
  */
 
-#include "ui/help/AboutDialog.h"
+#include "AboutDialog.h"
 
 #include "GpgFrontendBuildInfo.h"
 #include "core/function/GlobalSettingStation.h"
 #include "core/thread/TaskRunnerGetter.h"
+#include "ui/dialog/help/GnupgTab.h"
 #include "ui/thread/VersionCheckTask.h"
 
 namespace GpgFrontend::UI {
 
-AboutDialog::AboutDialog(int defaultIndex, QWidget* parent) : QDialog(parent) {
+AboutDialog::AboutDialog(int defaultIndex, QWidget* parent)
+    : GeneralDialog(typeid(AboutDialog).name(), parent) {
   this->setWindowTitle(QString(_("About")) + " " + qApp->applicationName());
 
-  auto* tabWidget = new QTabWidget;
-  auto* infoTab = new InfoTab();
-  auto* translatorsTab = new TranslatorsTab();
+  auto* tab_widget = new QTabWidget;
+  auto* info_tab = new InfoTab();
+  auto* gnupg_tab = new GnupgTab();
+  auto* translators_tab = new TranslatorsTab();
   update_tab_ = new UpdateTab();
 
-  tabWidget->addTab(infoTab, _("About Software"));
-  tabWidget->addTab(translatorsTab, _("Translators"));
-  tabWidget->addTab(update_tab_, _("Update"));
+  tab_widget->addTab(info_tab, _("About GpgFrontend"));
+  tab_widget->addTab(gnupg_tab, _("GnuPG"));
+  tab_widget->addTab(translators_tab, _("Translators"));
+  tab_widget->addTab(update_tab_, _("Update"));
 
-  connect(tabWidget, &QTabWidget::currentChanged, this,
+  connect(tab_widget, &QTabWidget::currentChanged, this,
           [&](int index) { LOG(INFO) << "Current Index" << index; });
 
-  if (defaultIndex < tabWidget->count() && defaultIndex >= 0) {
-    tabWidget->setCurrentIndex(defaultIndex);
+  if (defaultIndex < tab_widget->count() && defaultIndex >= 0) {
+    tab_widget->setCurrentIndex(defaultIndex);
   }
 
   auto* buttonBox = new QDialogButtonBox(QDialogButtonBox::Ok);
   connect(buttonBox, &QDialogButtonBox::accepted, this, &AboutDialog::close);
 
   auto* mainLayout = new QVBoxLayout;
-  mainLayout->addWidget(tabWidget);
+  mainLayout->addWidget(tab_widget);
   mainLayout->addWidget(buttonBox);
   setLayout(mainLayout);
 
diff --git a/src/ui/help/AboutDialog.h b/src/ui/dialog/help/AboutDialog.h
index 40d93f3e..09a63734 100644
--- a/src/ui/help/AboutDialog.h
+++ b/src/ui/dialog/help/AboutDialog.h
@@ -31,6 +31,7 @@
 
 #include "core/GpgContext.h"
 #include "ui/GpgFrontendUI.h"
+#include "ui/dialog/GeneralDialog.h"
 #include "ui/struct/SoftwareVersion.h"
 
 namespace GpgFrontend::UI {
@@ -116,7 +117,7 @@ class UpdateTab : public QWidget {
  * @brief Class for handling the about dialog
  *
  */
-class AboutDialog : public QDialog {
+class AboutDialog : public GeneralDialog {
   Q_OBJECT
 
  public:
diff --git a/src/ui/dialog/help/GnupgTab.cpp b/src/ui/dialog/help/GnupgTab.cpp
new file mode 100644
index 00000000..48787987
--- /dev/null
+++ b/src/ui/dialog/help/GnupgTab.cpp
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2022. Saturneric
+ *
+ *  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
+ */
+
+//
+// Created by eric on 2022/7/23.
+//
+
+#include "GnupgTab.h"
+
+GpgFrontend::UI::GnupgTab::GnupgTab(QWidget* parent) : QWidget(parent) {
+  GpgContext& ctx = GpgContext::GetInstance();
+  auto info = ctx.GetInfo();
+
+  auto* pixmap = new QPixmap(":gnupg.png");
+  auto* text = new QString(
+      "<center><h2>" + QString(_("GnuPG")) + "</h2></center>" + "<center><b>" +
+      QString(_("GnuPG Version")) + ": " +
+      QString::fromStdString(info.GnupgVersion) + "</b></center>" +
+      "<center><b>" + +"</b></center>" + "<center>" +
+      QString(_("GpgME Version")) + ": " +
+      QString::fromStdString(info.GpgMEVersion) + "</center><br /><hr />" +
+      "<h3>" + QString(_("PATHs")) + "</h3>" + QString(_("GpgConf")) + ": " +
+      QString::fromStdString(info.GpgConfPath) + "<br />" +
+      QString(_("GnuPG")) + ": " + QString::fromStdString(info.AppPath) +
+      "<br />" + QString(_("CMS")) + ": " +
+      QString::fromStdString(info.CMSPath) + "<br />");
+
+  auto* layout = new QGridLayout();
+  auto* pixmapLabel = new QLabel();
+  pixmapLabel->setPixmap(*pixmap);
+  layout->addWidget(pixmapLabel, 0, 0, 1, -1, Qt::AlignCenter);
+  auto* aboutLabel = new QLabel();
+  aboutLabel->setText(*text);
+  aboutLabel->setWordWrap(true);
+  aboutLabel->setOpenExternalLinks(true);
+  layout->addWidget(aboutLabel, 1, 0, 1, -1);
+  layout->addItem(
+      new QSpacerItem(20, 10, QSizePolicy::Minimum, QSizePolicy::Fixed), 2, 1,
+      1, 1);
+
+  setLayout(layout);
+}
diff --git a/src/ui/dialog/help/GnupgTab.h b/src/ui/dialog/help/GnupgTab.h
new file mode 100644
index 00000000..4fc7ff22
--- /dev/null
+++ b/src/ui/dialog/help/GnupgTab.h
@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2022. Saturneric
+ *
+ *  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
+ */
+
+//
+// Created by eric on 2022/7/23.
+//
+
+#ifndef GPGFRONTEND_GNUPGTAB_H
+#define GPGFRONTEND_GNUPGTAB_H
+
+#include "core/GpgContext.h"
+#include "ui/GpgFrontendUI.h"
+
+namespace GpgFrontend::UI{
+class GnupgTab: public QWidget {
+  Q_OBJECT
+ public:
+  /**
+   * @brief Construct a new Info Tab object
+   *
+   * @param parent
+   */
+  explicit GnupgTab(QWidget* parent = nullptr);
+};
+}
+
+
+
+#endif  // GPGFRONTEND_GNUPGTAB_H
diff --git a/src/ui/import_export/ExportKeyPackageDialog.cpp b/src/ui/dialog/import_export/ExportKeyPackageDialog.cpp
index d6f303f6..312cd946 100644
--- a/src/ui/import_export/ExportKeyPackageDialog.cpp
+++ b/src/ui/dialog/import_export/ExportKeyPackageDialog.cpp
@@ -30,13 +30,13 @@
 
 #include <boost/format.hpp>
 
-#include "core/function/gpg/GpgKeyGetter.h"
 #include "core/function/KeyPackageOperator.h"
+#include "core/function/gpg/GpgKeyGetter.h"
 #include "ui_ExportKeyPackageDialog.h"
 
 GpgFrontend::UI::ExportKeyPackageDialog::ExportKeyPackageDialog(
     KeyIdArgsListPtr key_ids, QWidget* parent)
-    : QDialog(parent),
+    : GeneralDialog(typeid(ExportKeyPackageDialog).name(), parent),
       ui_(std::make_shared<Ui_exportKeyPackageDialog>()),
       key_ids_(std::move(key_ids)) {
   ui_->setupUi(this);
@@ -141,5 +141,5 @@ GpgFrontend::UI::ExportKeyPackageDialog::ExportKeyPackageDialog(
       _("Exclude keys that do not have a private key"));
 
   setAttribute(Qt::WA_DeleteOnClose);
-  setWindowTitle(_("exportKeyPackageDialog"));
+  setWindowTitle(_("Export As Key Package"));
 }
diff --git a/src/ui/import_export/ExportKeyPackageDialog.h b/src/ui/dialog/import_export/ExportKeyPackageDialog.h
index ecf13b1d..c5f9a2b1 100644
--- a/src/ui/import_export/ExportKeyPackageDialog.h
+++ b/src/ui/dialog/import_export/ExportKeyPackageDialog.h
@@ -30,6 +30,7 @@
 #define GPGFRONTEND_EXPORTKEYPACKAGEDIALOG_H
 
 #include "GpgFrontendUI.h"
+#include "ui/dialog/GeneralDialog.h"
 
 class Ui_exportKeyPackageDialog;
 
@@ -39,7 +40,7 @@ namespace GpgFrontend::UI {
  * @brief
  *
  */
-class ExportKeyPackageDialog : public QDialog {
+class ExportKeyPackageDialog : public GeneralDialog {
   Q_OBJECT
 
  public:
diff --git a/src/ui/import_export/KeyImportDetailDialog.cpp b/src/ui/dialog/import_export/KeyImportDetailDialog.cpp
index 766d2d81..31183a34 100644
--- a/src/ui/import_export/KeyImportDetailDialog.cpp
+++ b/src/ui/dialog/import_export/KeyImportDetailDialog.cpp
@@ -33,7 +33,8 @@
 namespace GpgFrontend::UI {
 KeyImportDetailDialog::KeyImportDetailDialog(GpgImportInformation result,
                                              bool automatic, QWidget* parent)
-    : QDialog(parent), m_result_(std::move(result)) {
+    : GeneralDialog(typeid(KeyImportDetailDialog).name(), parent),
+      m_result_(std::move(result)) {
   // If no key for import found, just show a message
   if (m_result_.considered == 0) {
     if (automatic)
@@ -197,6 +198,7 @@ QString KeyImportDetailDialog::get_status_string(int keyStatus) {
 
 void KeyImportDetailDialog::create_button_box() {
   button_box_ = new QDialogButtonBox(QDialogButtonBox::Ok);
-  connect(button_box_, &QDialogButtonBox::accepted, this, &KeyImportDetailDialog::close);
+  connect(button_box_, &QDialogButtonBox::accepted, this,
+          &KeyImportDetailDialog::close);
 }
 }  // namespace GpgFrontend::UI
diff --git a/src/ui/import_export/KeyImportDetailDialog.h b/src/ui/dialog/import_export/KeyImportDetailDialog.h
index a648f205..06f44e94 100644
--- a/src/ui/import_export/KeyImportDetailDialog.h
+++ b/src/ui/dialog/import_export/KeyImportDetailDialog.h
@@ -32,6 +32,7 @@
 #include "core/GpgContext.h"
 #include "core/function/gpg/GpgKeyImportExporter.h"
 #include "ui/GpgFrontendUI.h"
+#include "ui/dialog/GeneralDialog.h"
 
 namespace GpgFrontend::UI {
 
@@ -39,7 +40,7 @@ namespace GpgFrontend::UI {
  * @brief
  *
  */
-class KeyImportDetailDialog : public QDialog {
+class KeyImportDetailDialog : public GeneralDialog {
   Q_OBJECT
 
  public:
diff --git a/src/ui/import_export/KeyServerImportDialog.cpp b/src/ui/dialog/import_export/KeyServerImportDialog.cpp
index e359238c..6430a22e 100644
--- a/src/ui/import_export/KeyServerImportDialog.cpp
+++ b/src/ui/dialog/import_export/KeyServerImportDialog.cpp
@@ -28,17 +28,21 @@
 
 #include "KeyServerImportDialog.h"
 
+#include <string>
 #include <utility>
 
 #include "core/function/GlobalSettingStation.h"
 #include "core/function/gpg/GpgKeyImportExporter.h"
+#include "thread/KeyServerImportTask.h"
 #include "ui/SignalStation.h"
 #include "ui/struct/SettingsObject.h"
+#include "ui/thread/KeyServerSearchTask.h"
 
 namespace GpgFrontend::UI {
 
 KeyServerImportDialog::KeyServerImportDialog(bool automatic, QWidget* parent)
-    : QDialog(parent), m_automatic_(automatic) {
+    : GeneralDialog("key_server_import_dialog", parent),
+      m_automatic_(automatic) {
   // Layout for messagebox
   auto* message_layout = new QHBoxLayout();
 
@@ -115,36 +119,6 @@ KeyServerImportDialog::KeyServerImportDialog(bool automatic, QWidget* parent)
 
   if (automatic) {
     this->setFixedSize(240, 42);
-  } else {
-    auto pos = QPoint(150, 150);
-    LOG(INFO) << "parent" << parent;
-    if (parent) pos += parent->pos();
-    LOG(INFO) << "pos default" << pos.x() << pos.y();
-    auto size = QSize(800, 500);
-
-    try {
-      SettingsObject key_server_import_state("key_server_import_state");
-      bool window_save = key_server_import_state.Check("window_save", true);
-
-      // Restore window size & location
-      if (window_save) {
-        int x = key_server_import_state.Check("window_pos").Check("x", pos.x()),
-            y = key_server_import_state.Check("window_pos").Check("y", pos.y());
-
-        pos = QPoint(x, y);
-        int width = key_server_import_state.Check("window_size")
-                        .Check("width", size.width()),
-            height = key_server_import_state.Check("window_size")
-                         .Check("height", size.height());
-
-        size = QSize(width, height);
-      }
-    } catch (...) {
-      LOG(WARNING) << "cannot read pos or size from settings object";
-    }
-
-    this->resize(size);
-    this->move(pos);
   }
 
   this->setModal(true);
@@ -152,10 +126,31 @@ KeyServerImportDialog::KeyServerImportDialog(bool automatic, QWidget* parent)
   connect(this, &KeyServerImportDialog::SignalKeyImported,
           SignalStation::GetInstance(),
           &SignalStation::SignalKeyDatabaseRefresh);
+}
+
+KeyServerImportDialog::KeyServerImportDialog(QWidget* parent)
+    : GeneralDialog("key_server_import_dialog", parent), m_automatic_(true) {
+  setWindowFlags(Qt::Window | Qt::WindowTitleHint | Qt::CustomizeWindowHint);
+
+  // Network Waiting
+  waiting_bar_ = new QProgressBar();
+  waiting_bar_->setVisible(false);
+  waiting_bar_->setRange(0, 0);
+  waiting_bar_->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
+  waiting_bar_->setTextVisible(false);
+
+  // Layout for messagebox
+  auto* layout = new QHBoxLayout();
+  layout->setContentsMargins(0, 0, 0, 0);
+  layout->setSpacing(0);
+  layout->addWidget(waiting_bar_);
 
-  // save window pos and size to configure file
-  connect(this, &KeyServerImportDialog::finished, this,
-          &KeyServerImportDialog::slot_save_window_state);
+  key_server_combo_box_ = create_comboBox();
+
+  this->setLayout(layout);
+  this->setWindowTitle(_("Update Keys from Keyserver"));
+  this->setFixedSize(240, 42);
+  this->setModal(true);
 }
 
 QComboBox* KeyServerImportDialog::create_comboBox() {
@@ -174,6 +169,9 @@ QComboBox* KeyServerImportDialog::create_comboBox() {
     }
 
     int default_key_server_index = key_server_json.Check("default_server", 0);
+    if (default_key_server_index >= key_server_list.size()) {
+      throw std::runtime_error("default_server index out of range");
+    }
     std::string default_key_server =
         key_server_list[default_key_server_index].get<std::string>();
 
@@ -227,45 +225,44 @@ void KeyServerImportDialog::slot_search() {
     return;
   }
 
-  QUrl url_from_remote = key_server_combo_box_->currentText() +
-                         "/pks/lookup?search=" + search_line_edit_->text() +
-                         "&op=index&options=mr";
-  network_access_manager_ = new QNetworkAccessManager(this);
-  QNetworkReply* reply =
-      network_access_manager_->get(QNetworkRequest(url_from_remote));
+  auto* task = new KeyServerSearchTask(
+      key_server_combo_box_->currentText().toStdString(),
+      search_line_edit_->text().toStdString());
 
-  connect(reply, &QNetworkReply::finished, this,
+  connect(task, &KeyServerSearchTask::SignalKeyServerSearchResult, this,
           &KeyServerImportDialog::slot_search_finished);
 
+  connect(task, &KeyServerSearchTask::SignalKeyServerSearchResult, this, [=]() {
+    this->search_button_->setDisabled(false);
+    this->key_server_combo_box_->setDisabled(false);
+    this->search_line_edit_->setReadOnly(false);
+    this->import_button_->setDisabled(false);
+    set_loading(false);
+  });
+
   set_loading(true);
   this->search_button_->setDisabled(true);
   this->key_server_combo_box_->setDisabled(true);
   this->search_line_edit_->setReadOnly(true);
   this->import_button_->setDisabled(true);
 
-  while (reply->isRunning()) {
-    QApplication::processEvents();
-  }
-
-  this->search_button_->setDisabled(false);
-  this->key_server_combo_box_->setDisabled(false);
-  this->search_line_edit_->setReadOnly(false);
-  this->import_button_->setDisabled(false);
-  set_loading(false);
+  Thread::TaskRunnerGetter::GetInstance()
+      .GetTaskRunner(Thread::TaskRunnerGetter::kTaskRunnerType_Network)
+      ->PostTask(task);
 }
 
-void KeyServerImportDialog::slot_search_finished() {
-  LOG(INFO) << "Called";
-
-  auto* reply = qobject_cast<QNetworkReply*>(sender());
+void KeyServerImportDialog::slot_search_finished(
+    QNetworkReply::NetworkError error, QByteArray buffer) {
+  LOG(INFO) << "Called" << error << buffer.size();
+  LOG(INFO) << buffer.toStdString();
 
   keys_table_->clearContents();
   keys_table_->setRowCount(0);
-  QString first_line = QString(reply->readLine(1024));
 
-  auto error = reply->error();
+  auto stream = QTextStream(buffer);
+
   if (error != QNetworkReply::NoError) {
-    LOG(INFO) << "Error From Reply" << reply->errorString().toStdString();
+    LOG(INFO) << "Error From Reply" << error;
 
     switch (error) {
       case QNetworkReply::ContentNotFoundError:
@@ -283,8 +280,9 @@ void KeyServerImportDialog::slot_search_finished() {
     return;
   }
 
-  if (first_line.contains("Error")) {
-    QString text = QString(reply->readLine(1024));
+  if (stream.readLine().contains("Error")) {
+    auto text = stream.readLine(1024);
+
     if (text.contains("Too many responses")) {
       set_message(
           "<h4>" + QString(_("Too many responses from keyserver!")) + "</h4>",
@@ -324,11 +322,14 @@ void KeyServerImportDialog::slot_search_finished() {
   } else {
     int row = 0;
     bool strikeout = false;
-    while (reply->canReadLine()) {
-      auto line_buff = reply->readLine().trimmed();
-      QString decoded =
-          QString::fromUtf8(line_buff.constData(), line_buff.size());
-      QStringList line = decoded.split(":");
+
+    // read lines until end of steam
+    while (!stream.atEnd()) {
+      QStringList line =
+          QString::fromUtf8(QByteArray::fromPercentEncoding(
+                                stream.readLine().trimmed().toUtf8()))
+              .split(":");
+
       // TODO: have a look at two following pub lines
       if (line[0] == "pub") {
         strikeout = false;
@@ -354,7 +355,9 @@ void KeyServerImportDialog::slot_search_finished() {
           }
         }
 
-        QStringList line2 = QString(reply->readLine()).split(":");
+        QStringList line2 = QString(QByteArray::fromPercentEncoding(
+                                        stream.readLine().trimmed().toUtf8()))
+                                .split(":");
 
         auto* uid = new QTableWidgetItem();
         if (line2.size() > 1) {
@@ -400,32 +403,45 @@ void KeyServerImportDialog::slot_search_finished() {
     keys_table_->resizeColumnsToContents();
     import_button_->setDisabled(keys_table_->size().isEmpty());
   }
-  reply->deleteLater();
 }
 
 void KeyServerImportDialog::slot_import() {
-  LOG(INFO) << _("Current Row") << keys_table_->currentRow();
-  if (keys_table_->currentRow() > -1) {
-    QString keyid = keys_table_->item(keys_table_->currentRow(), 2)->text();
-    SlotImport(QStringList(keyid), key_server_combo_box_->currentText());
+  std::vector<std::string> key_ids;
+  const int row_count = keys_table_->rowCount();
+  for (int i = 0; i < row_count; ++i) {
+    if (keys_table_->item(i, 2)->isSelected()) {
+      QString keyid = keys_table_->item(i, 2)->text();
+      key_ids.push_back(keyid.toStdString());
+    }
   }
+  if (!key_ids.empty())
+    SlotImport(key_ids, key_server_combo_box_->currentText().toStdString());
 }
 
 void KeyServerImportDialog::SlotImport(const KeyIdArgsListPtr& keys) {
+  // keyserver host url
   std::string target_keyserver;
+
   if (key_server_combo_box_ != nullptr) {
     target_keyserver = key_server_combo_box_->currentText().toStdString();
   }
   if (target_keyserver.empty()) {
     try {
-      auto& settings = GlobalSettingStation::GetInstance().GetUISettings();
+      SettingsObject key_server_json("key_server");
+      const auto key_server_list =
+          key_server_json.Check("server_list", nlohmann::json::array());
 
-      target_keyserver = settings.lookup("keyserver.default_server").c_str();
+      int default_key_server_index = key_server_json.Check("default_server", 0);
+      if (default_key_server_index >= key_server_list.size()) {
+        throw std::runtime_error("default_server index out of range");
+      }
+      std::string default_key_server =
+          key_server_list[default_key_server_index].get<std::string>();
 
-      LOG(INFO) << _("Set target Key Server to default Key Server")
-                << target_keyserver;
+      target_keyserver = default_key_server;
     } catch (...) {
-      LOG(ERROR) << _("Cannot read default_keyserver From Settings");
+      LOG(ERROR) << _("Setting Operation Error") << "server_list"
+                 << "default_server";
       QMessageBox::critical(
           nullptr, _("Default Keyserver Not Found"),
           _("Cannot read default keyserver from your settings, "
@@ -433,42 +449,31 @@ void KeyServerImportDialog::SlotImport(const KeyIdArgsListPtr& keys) {
       return;
     }
   }
-  auto key_ids = QStringList();
-  for (const auto& key_id : *keys)
-    key_ids.append(QString::fromStdString(key_id));
-  SlotImport(key_ids, QUrl(target_keyserver.c_str()));
-}
-
-void KeyServerImportDialog::SlotImport(const QStringList& keyIds,
-                                       const QUrl& keyserverUrl) {
-  for (const auto& keyId : keyIds) {
-    QUrl req_url(keyserverUrl.scheme() + "://" + keyserverUrl.host() +
-                 "/pks/lookup?op=get&search=0x" + keyId + "&options=mr");
-
-    LOG(INFO) << "request url" << req_url.toString().toStdString();
-    auto manager = new QNetworkAccessManager(this);
-
-    QNetworkReply* reply = manager->get(QNetworkRequest(req_url));
-    connect(reply, &QNetworkReply::finished, this,
-            [&, keyId]() { this->slot_import_finished(keyId); });
-    LOG(INFO) << "loading start";
-    set_loading(true);
-    while (reply->isRunning()) QApplication::processEvents();
-    set_loading(false);
-    LOG(INFO) << "loading done";
+  std::vector<std::string> key_ids;
+  for (const auto& key_id : *keys) {
+    key_ids.push_back(key_id);
   }
+  SlotImport(key_ids, target_keyserver);
 }
 
-void KeyServerImportDialog::slot_import_finished(const QString& keyid) {
-  LOG(INFO) << _("Called");
+void KeyServerImportDialog::SlotImport(std::vector<std::string> key_ids,
+                                       std::string keyserver_url) {
+  auto* task = new KeyServerImportTask(keyserver_url, key_ids);
 
-  auto* reply = qobject_cast<QNetworkReply*>(sender());
+  connect(task, &KeyServerImportTask::SignalKeyServerImportResult, this,
+          &KeyServerImportDialog::slot_import_finished);
 
-  QByteArray key = reply->readAll();
+  Thread::TaskRunnerGetter::GetInstance()
+      .GetTaskRunner(Thread::TaskRunnerGetter::kTaskRunnerType_Network)
+      ->PostTask(task);
+}
+
+void KeyServerImportDialog::slot_import_finished(
+    QNetworkReply::NetworkError error, QByteArray buffer) {
+  LOG(INFO) << _("Called");
 
-  auto error = reply->error();
   if (error != QNetworkReply::NoError) {
-    LOG(ERROR) << "Error From Reply" << reply->errorString().toStdString();
+    LOG(ERROR) << "Error From Reply" << buffer.toStdString();
     if (!m_automatic_) {
       switch (error) {
         case QNetworkReply::ContentNotFoundError:
@@ -486,10 +491,8 @@ void KeyServerImportDialog::slot_import_finished(const QString& keyid) {
     } else {
       switch (error) {
         case QNetworkReply::ContentNotFoundError:
-          QMessageBox::critical(
-              nullptr, _("Public key Not Found"),
-              QString(_("Public key fingerprint %1 not found in the Keyserver"))
-                  .arg(keyid));
+          QMessageBox::critical(nullptr, _("Key Not Found"),
+                                QString(_("key not found in the Keyserver")));
           break;
         case QNetworkReply::TimeoutError:
           QMessageBox::critical(nullptr, _("Timeout"), "Connection timeout");
@@ -510,9 +513,8 @@ void KeyServerImportDialog::slot_import_finished(const QString& keyid) {
     return;
   }
 
-  reply->deleteLater();
-
-  this->import_keys(std::make_unique<ByteArray>(key.constData(), key.length()));
+  this->import_keys(
+      std::make_unique<ByteArray>(buffer.constData(), buffer.length()));
 
   if (!m_automatic_) {
     set_message(QString("<h4>") + _("Key Imported") + "</h4>", false);
@@ -522,14 +524,17 @@ void KeyServerImportDialog::slot_import_finished(const QString& keyid) {
 void KeyServerImportDialog::import_keys(ByteArrayPtr in_data) {
   GpgImportInformation result =
       GpgKeyImportExporter::GetInstance().ImportKey(std::move(in_data));
+
+  // refresh the key database
   emit SignalKeyImported();
+
   QWidget* _parent = qobject_cast<QWidget*>(parent());
   if (m_automatic_) {
     auto dialog = new KeyImportDetailDialog(result, true, _parent);
     dialog->show();
     this->accept();
   } else {
-    auto dialog = new KeyImportDetailDialog(result, false, _parent);
+    auto dialog = new KeyImportDetailDialog(result, false, this);
     dialog->exec();
   }
 }
@@ -542,45 +547,4 @@ void KeyServerImportDialog::set_loading(bool status) {
   }
 }
 
-KeyServerImportDialog::KeyServerImportDialog(QWidget* parent)
-    : QDialog(parent), m_automatic_(true) {
-  setWindowFlags(Qt::Window | Qt::WindowTitleHint | Qt::CustomizeWindowHint);
-
-  // Network Waiting
-  waiting_bar_ = new QProgressBar();
-  waiting_bar_->setVisible(false);
-  waiting_bar_->setRange(0, 0);
-  waiting_bar_->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
-  waiting_bar_->setTextVisible(false);
-
-  // Layout for messagebox
-  auto* layout = new QHBoxLayout();
-  layout->setContentsMargins(0, 0, 0, 0);
-  layout->setSpacing(0);
-  layout->addWidget(waiting_bar_);
-
-  key_server_combo_box_ = create_comboBox();
-
-  this->setLayout(layout);
-  this->setWindowTitle(_("Update Keys from Keyserver"));
-  this->setFixedSize(240, 42);
-  this->setModal(true);
-}
-
-void KeyServerImportDialog::slot_save_window_state() {
-  LOG(INFO) << _("Called");
-
-  if (m_automatic_) return;
-
-  SettingsObject key_server_import_state("key_server_import_state");
-
-  // window position and size
-  key_server_import_state["window_pos"]["x"] = pos().x();
-  key_server_import_state["window_pos"]["y"] = pos().y();
-
-  key_server_import_state["window_size"]["width"] = size().width();
-  key_server_import_state["window_size"]["height"] = size().height();
-  key_server_import_state["window_save"] = true;
-}
-
 }  // namespace GpgFrontend::UI
diff --git a/src/ui/import_export/KeyServerImportDialog.h b/src/ui/dialog/import_export/KeyServerImportDialog.h
index 37362859..fd912bdd 100644
--- a/src/ui/import_export/KeyServerImportDialog.h
+++ b/src/ui/dialog/import_export/KeyServerImportDialog.h
@@ -29,9 +29,12 @@
 #ifndef __KEY_SERVER_IMPORT_DIALOG_H__
 #define __KEY_SERVER_IMPORT_DIALOG_H__
 
+#include <string>
+
 #include "KeyImportDetailDialog.h"
 #include "core/GpgContext.h"
 #include "ui/GpgFrontendUI.h"
+#include "ui/dialog/GeneralDialog.h"
 #include "ui/widgets/KeyList.h"
 
 namespace GpgFrontend::UI {
@@ -40,7 +43,7 @@ namespace GpgFrontend::UI {
  * @brief
  *
  */
-class KeyServerImportDialog : public QDialog {
+class KeyServerImportDialog : public GeneralDialog {
   Q_OBJECT
 
  public:
@@ -74,7 +77,8 @@ class KeyServerImportDialog : public QDialog {
    * @param keyIds
    * @param keyserverUrl
    */
-  void SlotImport(const QStringList& keyIds, const QUrl& keyserverUrl);
+  void SlotImport(std::vector<std::string> key_ids_list,
+                  std::string keyserver_url);
 
  signals:
 
@@ -87,7 +91,7 @@ class KeyServerImportDialog : public QDialog {
  private slots:
 
   /**
-   * @brief
+   * @brief import key(s) for the key table selection
    *
    */
   void slot_import();
@@ -96,14 +100,16 @@ class KeyServerImportDialog : public QDialog {
    * @brief
    *
    */
-  void slot_search_finished();
+  void slot_search_finished(QNetworkReply::NetworkError reply,
+                            QByteArray buffer);
 
   /**
    * @brief
    *
    * @param keyid
    */
-  void slot_import_finished(const QString& keyid);
+  void slot_import_finished(QNetworkReply::NetworkError error,
+                            QByteArray buffer);
 
   /**
    * @brief
@@ -111,12 +117,6 @@ class KeyServerImportDialog : public QDialog {
    */
   void slot_search();
 
-  /**
-   * @brief
-   *
-   */
-  void slot_save_window_state();
-
  private:
   /**
    * @brief Create a keys table object
@@ -164,18 +164,17 @@ class KeyServerImportDialog : public QDialog {
 
   bool m_automatic_ = false;  ///<
 
-  QLineEdit* search_line_edit_{};                    ///<
-  QComboBox* key_server_combo_box_{};                ///<
-  QProgressBar* waiting_bar_;                        ///<
-  QLabel* search_label_{};                           ///<
-  QLabel* key_server_label_{};                       ///<
-  QLabel* message_{};                                ///<
-  QLabel* icon_{};                                   ///<
-  QPushButton* close_button_{};                      ///<
-  QPushButton* import_button_{};                     ///<
-  QPushButton* search_button_{};                     ///<
-  QTableWidget* keys_table_{};                       ///<
-  QNetworkAccessManager* network_access_manager_{};  ///<
+  QLineEdit* search_line_edit_{};      ///<
+  QComboBox* key_server_combo_box_{};  ///<
+  QProgressBar* waiting_bar_;          ///<
+  QLabel* search_label_{};             ///<
+  QLabel* key_server_label_{};         ///<
+  QLabel* message_{};                  ///<
+  QLabel* icon_{};                     ///<
+  QPushButton* close_button_{};        ///<
+  QPushButton* import_button_{};       ///<
+  QPushButton* search_button_{};       ///<
+  QTableWidget* keys_table_{};         ///<
 };
 
 }  // namespace GpgFrontend::UI
diff --git a/src/ui/import_export/KeyUploadDialog.cpp b/src/ui/dialog/import_export/KeyUploadDialog.cpp
index a0436a8e..055f2e1f 100644
--- a/src/ui/import_export/KeyUploadDialog.cpp
+++ b/src/ui/dialog/import_export/KeyUploadDialog.cpp
@@ -30,15 +30,16 @@
 
 #include <algorithm>
 
+#include "core/function/GlobalSettingStation.h"
 #include "core/function/gpg/GpgKeyGetter.h"
 #include "core/function/gpg/GpgKeyImportExporter.h"
-#include "core/function/GlobalSettingStation.h"
 
 namespace GpgFrontend::UI {
 
 KeyUploadDialog::KeyUploadDialog(const KeyIdArgsListPtr& keys_ids,
                                  QWidget* parent)
-    : QDialog(parent), m_keys_(GpgKeyGetter::GetInstance().GetKeys(keys_ids)) {
+    : GeneralDialog(typeid(KeyUploadDialog).name(), parent),
+      m_keys_(GpgKeyGetter::GetInstance().GetKeys(keys_ids)) {
   auto* pb = new QProgressBar();
   pb->setRange(0, 0);
   pb->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
@@ -109,7 +110,8 @@ void KeyUploadDialog::slot_upload_key_to_server(
 
   // Send Post Data
   QNetworkReply* reply = qnam->post(request, postData);
-  connect(reply, &QNetworkReply::finished, this, &KeyUploadDialog::slot_upload_finished);
+  connect(reply, &QNetworkReply::finished, this,
+          &KeyUploadDialog::slot_upload_finished);
 
   // Keep Waiting
   while (reply->isRunning()) {
diff --git a/src/ui/import_export/KeyUploadDialog.h b/src/ui/dialog/import_export/KeyUploadDialog.h
index 05cba083..d621f33a 100644
--- a/src/ui/import_export/KeyUploadDialog.h
+++ b/src/ui/dialog/import_export/KeyUploadDialog.h
@@ -31,6 +31,7 @@
 
 #include "core/GpgContext.h"
 #include "ui/GpgFrontendUI.h"
+#include "ui/dialog/GeneralDialog.h"
 
 namespace GpgFrontend::UI {
 
@@ -38,7 +39,7 @@ namespace GpgFrontend::UI {
  * @brief
  *
  */
-class KeyUploadDialog : public QDialog {
+class KeyUploadDialog : public GeneralDialog {
   Q_OBJECT
  public:
   /**
diff --git a/src/ui/key_generate/KeygenDialog.cpp b/src/ui/dialog/key_generate/KeygenDialog.cpp
index d5ca801d..42160ec9 100644
--- a/src/ui/key_generate/KeygenDialog.cpp
+++ b/src/ui/dialog/key_generate/KeygenDialog.cpp
@@ -26,7 +26,7 @@
  *
  */
 
-#include "ui/key_generate/KeygenDialog.h"
+#include "KeygenDialog.h"
 
 #include "core/function/GlobalSettingStation.h"
 #include "core/function/gpg/GpgKeyOpera.h"
@@ -35,7 +35,8 @@
 
 namespace GpgFrontend::UI {
 
-KeyGenDialog::KeyGenDialog(QWidget* parent) : QDialog(parent) {
+KeyGenDialog::KeyGenDialog(QWidget* parent)
+    : GeneralDialog(typeid(KeyGenDialog).name(), parent) {
   button_box_ =
       new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel);
 
diff --git a/src/ui/key_generate/KeygenDialog.h b/src/ui/dialog/key_generate/KeygenDialog.h
index 751ebdd8..baf10dbf 100644
--- a/src/ui/key_generate/KeygenDialog.h
+++ b/src/ui/dialog/key_generate/KeygenDialog.h
@@ -30,6 +30,7 @@
 #include "core/GpgContext.h"
 #include "core/GpgGenKeyInfo.h"
 #include "ui/GpgFrontendUI.h"
+#include "ui/dialog/GeneralDialog.h"
 
 namespace GpgFrontend::UI {
 
@@ -37,7 +38,7 @@ namespace GpgFrontend::UI {
  * @brief
  *
  */
-class KeyGenDialog : public QDialog {
+class KeyGenDialog : public GeneralDialog {
   Q_OBJECT
 
  public:
diff --git a/src/ui/key_generate/SubkeyGenerateDialog.cpp b/src/ui/dialog/key_generate/SubkeyGenerateDialog.cpp
index 2b9e076d..806c0e50 100644
--- a/src/ui/key_generate/SubkeyGenerateDialog.cpp
+++ b/src/ui/dialog/key_generate/SubkeyGenerateDialog.cpp
@@ -24,7 +24,7 @@
  *
  */
 
-#include "ui/key_generate/SubkeyGenerateDialog.h"
+#include "SubkeyGenerateDialog.h"
 
 #include "core/function/GlobalSettingStation.h"
 #include "core/function/gpg/GpgKeyGetter.h"
@@ -35,7 +35,8 @@
 namespace GpgFrontend::UI {
 
 SubkeyGenerateDialog::SubkeyGenerateDialog(const KeyId& key_id, QWidget* parent)
-    : QDialog(parent), key_(GpgKeyGetter::GetInstance().GetKey(key_id)) {
+    : GeneralDialog(typeid(SubkeyGenerateDialog).name(), parent),
+      key_(GpgKeyGetter::GetInstance().GetKey(key_id)) {
   auto& settings = GlobalSettingStation::GetInstance().GetUISettings();
 
   // max expire date time
diff --git a/src/ui/key_generate/SubkeyGenerateDialog.h b/src/ui/dialog/key_generate/SubkeyGenerateDialog.h
index 4ab90ad4..1e6608b2 100644
--- a/src/ui/key_generate/SubkeyGenerateDialog.h
+++ b/src/ui/dialog/key_generate/SubkeyGenerateDialog.h
@@ -30,13 +30,14 @@
 #include "core/GpgContext.h"
 #include "core/GpgGenKeyInfo.h"
 #include "ui/GpgFrontendUI.h"
+#include "ui/dialog/GeneralDialog.h"
 
 namespace GpgFrontend::UI {
 /**
  * @brief
  *
  */
-class SubkeyGenerateDialog : public QDialog {
+class SubkeyGenerateDialog : public GeneralDialog {
   Q_OBJECT
 
  public:
diff --git a/src/ui/keypair_details/KeyDetailsDialog.cpp b/src/ui/dialog/keypair_details/KeyDetailsDialog.cpp
index 3b3e8818..9c2f8003 100644
--- a/src/ui/keypair_details/KeyDetailsDialog.cpp
+++ b/src/ui/dialog/keypair_details/KeyDetailsDialog.cpp
@@ -26,16 +26,16 @@
  *
  */
 
-#include "ui/keypair_details/KeyDetailsDialog.h"
+#include "KeyDetailsDialog.h"
 
-#include "ui/keypair_details/KeyPairDetailTab.h"
-#include "ui/keypair_details/KeyPairOperaTab.h"
-#include "ui/keypair_details/KeyPairSubkeyTab.h"
-#include "ui/keypair_details/KeyPairUIDTab.h"
+#include "KeyPairDetailTab.h"
+#include "KeyPairOperaTab.h"
+#include "KeyPairSubkeyTab.h"
+#include "KeyPairUIDTab.h"
 
 namespace GpgFrontend::UI {
 KeyDetailsDialog::KeyDetailsDialog(const GpgKey& key, QWidget* parent)
-    : QDialog(parent) {
+    : GeneralDialog(typeid(KeyDetailsDialog).name(), parent) {
   tab_widget_ = new QTabWidget();
   tab_widget_->addTab(new KeyPairDetailTab(key.GetId(), tab_widget_),
                       _("KeyPair"));
diff --git a/src/ui/keypair_details/KeyDetailsDialog.h b/src/ui/dialog/keypair_details/KeyDetailsDialog.h
index e6f4472c..1ddcda00 100644
--- a/src/ui/keypair_details/KeyDetailsDialog.h
+++ b/src/ui/dialog/keypair_details/KeyDetailsDialog.h
@@ -31,10 +31,11 @@
 
 #include "core/GpgContext.h"
 #include "ui/GpgFrontendUI.h"
+#include "ui/dialog/GeneralDialog.h"
 
 namespace GpgFrontend::UI {
 
-class KeyDetailsDialog : public QDialog {
+class KeyDetailsDialog : public GeneralDialog {
   Q_OBJECT
 
  public:
diff --git a/src/ui/keypair_details/KeyNewUIDDialog.cpp b/src/ui/dialog/keypair_details/KeyNewUIDDialog.cpp
index 9ff73f9e..18dd1967 100644
--- a/src/ui/keypair_details/KeyNewUIDDialog.cpp
+++ b/src/ui/dialog/keypair_details/KeyNewUIDDialog.cpp
@@ -24,7 +24,7 @@
  *
  */
 
-#include "ui/keypair_details/KeyNewUIDDialog.h"
+#include "KeyNewUIDDialog.h"
 
 #include "core/function/gpg/GpgKeyGetter.h"
 #include "core/function/gpg/GpgUIDOperator.h"
@@ -32,7 +32,8 @@
 
 namespace GpgFrontend::UI {
 KeyNewUIDDialog::KeyNewUIDDialog(const KeyId& key_id, QWidget* parent)
-    : QDialog(parent), m_key_(GpgKeyGetter::GetInstance().GetKey(key_id)) {
+    : GeneralDialog(typeid(KeyNewUIDDialog).name(), parent),
+      m_key_(GpgKeyGetter::GetInstance().GetKey(key_id)) {
   name_ = new QLineEdit();
   name_->setMinimumWidth(240);
   email_ = new QLineEdit();
@@ -65,7 +66,8 @@ KeyNewUIDDialog::KeyNewUIDDialog(const KeyId& key_id, QWidget* parent)
   this->setAttribute(Qt::WA_DeleteOnClose, true);
   this->setModal(true);
 
-  connect(this, &KeyNewUIDDialog::SignalUIDCreated, SignalStation::GetInstance(),
+  connect(this, &KeyNewUIDDialog::SignalUIDCreated,
+          SignalStation::GetInstance(),
           &SignalStation::SignalKeyDatabaseRefresh);
 }
 
@@ -84,9 +86,9 @@ void KeyNewUIDDialog::slot_create_new_uid() {
   }
   auto error_string = error_stream.str();
   if (error_string.empty()) {
-    if (GpgUIDOperator::GetInstance().AddUID(m_key_, name_->text().toStdString(),
-                                          comment_->text().toStdString(),
-                                          email_->text().toStdString())) {
+    if (GpgUIDOperator::GetInstance().AddUID(
+            m_key_, name_->text().toStdString(), comment_->text().toStdString(),
+            email_->text().toStdString())) {
       emit finished(1);
       emit SignalUIDCreated();
     } else
diff --git a/src/ui/keypair_details/KeyNewUIDDialog.h b/src/ui/dialog/keypair_details/KeyNewUIDDialog.h
index 24f2c6b1..291b59c4 100644
--- a/src/ui/keypair_details/KeyNewUIDDialog.h
+++ b/src/ui/dialog/keypair_details/KeyNewUIDDialog.h
@@ -29,9 +29,10 @@
 
 #include "core/GpgContext.h"
 #include "ui/GpgFrontendUI.h"
+#include "ui/dialog/GeneralDialog.h"
 
 namespace GpgFrontend::UI {
-class KeyNewUIDDialog : public QDialog {
+class KeyNewUIDDialog : public GeneralDialog {
   Q_OBJECT
 
  public:
diff --git a/src/ui/keypair_details/KeyPairDetailTab.cpp b/src/ui/dialog/keypair_details/KeyPairDetailTab.cpp
index 76f316e9..4a6e4b52 100644
--- a/src/ui/keypair_details/KeyPairDetailTab.cpp
+++ b/src/ui/dialog/keypair_details/KeyPairDetailTab.cpp
@@ -24,7 +24,7 @@
  *
  */
 
-#include "ui/keypair_details/KeyPairDetailTab.h"
+#include "KeyPairDetailTab.h"
 
 #include "core/function/gpg/GpgKeyGetter.h"
 #include "core/function/gpg/GpgKeyImportExporter.h"
diff --git a/src/ui/keypair_details/KeyPairDetailTab.h b/src/ui/dialog/keypair_details/KeyPairDetailTab.h
index 9d0d6560..91ccdab8 100644
--- a/src/ui/keypair_details/KeyPairDetailTab.h
+++ b/src/ui/dialog/keypair_details/KeyPairDetailTab.h
@@ -29,9 +29,9 @@
 
 #include "KeySetExpireDateDialog.h"
 #include "core/GpgContext.h"
-#include "import_export/KeyServerImportDialog.h"
-#include "import_export/KeyUploadDialog.h"
 #include "ui/GpgFrontendUI.h"
+#include "ui/dialog/import_export/KeyServerImportDialog.h"
+#include "ui/dialog/import_export/KeyUploadDialog.h"
 
 namespace GpgFrontend::UI {
 
@@ -60,19 +60,19 @@ class KeyPairDetailTab : public QWidget {
  private:
   GpgKey key_;  ///<
 
-  QGroupBox* owner_box_;          ///< Groupbox containing owner information
-  QGroupBox* key_box_;            ///< Groupbox containing key information
-  QGroupBox* fingerprint_box_;    ///< Groupbox containing fingerprint information
+  QGroupBox* owner_box_;        ///< Groupbox containing owner information
+  QGroupBox* key_box_;          ///< Groupbox containing key information
+  QGroupBox* fingerprint_box_;  ///< Groupbox containing fingerprint information
   QGroupBox* additional_uid_box_;  ///< Groupbox containing information about
                                    ///< additional uids
 
-  QLabel* name_var_label_;         ///< Label containing the keys name
-  QLabel* email_var_label_;        ///< Label containing the keys email
-  QLabel* comment_var_label_;      ///< Label containing the keys comment
-  QLabel* key_size_var_label_;      ///< Label containing the keys key size
-  QLabel* expire_var_label_;       ///< Label containing the keys expiration date
-  QLabel* created_var_label_;      ///< Label containing the keys creation date
-  QLabel* last_update_var_label_;   ///<
+  QLabel* name_var_label_;      ///< Label containing the keys name
+  QLabel* email_var_label_;     ///< Label containing the keys email
+  QLabel* comment_var_label_;   ///< Label containing the keys comment
+  QLabel* key_size_var_label_;  ///< Label containing the keys key size
+  QLabel* expire_var_label_;    ///< Label containing the keys expiration date
+  QLabel* created_var_label_;   ///< Label containing the keys creation date
+  QLabel* last_update_var_label_;  ///<
   QLabel* algorithm_var_label_;    ///< Label containing the keys algorithm
   QLabel* key_id_var_label;        ///< Label containing the keys keyid
   QLabel* fingerprint_var_label_;  ///< Label containing the keys fingerprint
diff --git a/src/ui/keypair_details/KeyPairOperaTab.cpp b/src/ui/dialog/keypair_details/KeyPairOperaTab.cpp
index 4f7cd66f..77eba0bc 100644
--- a/src/ui/keypair_details/KeyPairOperaTab.cpp
+++ b/src/ui/dialog/keypair_details/KeyPairOperaTab.cpp
@@ -26,12 +26,12 @@
 
 #include "KeyPairOperaTab.h"
 
+#include "KeySetExpireDateDialog.h"
 #include "core/function/gpg/GpgKeyImportExporter.h"
 #include "core/function/gpg/GpgKeyOpera.h"
-#include "import_export/KeyUploadDialog.h"
 #include "ui/SignalStation.h"
 #include "ui/UserInterfaceUtils.h"
-#include "ui/keypair_details/KeySetExpireDateDialog.h"
+#include "ui/dialog/import_export/KeyUploadDialog.h"
 
 namespace GpgFrontend::UI {
 
diff --git a/src/ui/keypair_details/KeyPairOperaTab.h b/src/ui/dialog/keypair_details/KeyPairOperaTab.h
index af6b1eee..af6b1eee 100644
--- a/src/ui/keypair_details/KeyPairOperaTab.h
+++ b/src/ui/dialog/keypair_details/KeyPairOperaTab.h
diff --git a/src/ui/keypair_details/KeyPairSubkeyTab.cpp b/src/ui/dialog/keypair_details/KeyPairSubkeyTab.cpp
index 46de550c..fe1d0798 100644
--- a/src/ui/keypair_details/KeyPairSubkeyTab.cpp
+++ b/src/ui/dialog/keypair_details/KeyPairSubkeyTab.cpp
@@ -26,7 +26,7 @@
  *
  */
 
-#include "ui/keypair_details/KeyPairSubkeyTab.h"
+#include "KeyPairSubkeyTab.h"
 
 #include "core/function/gpg/GpgKeyGetter.h"
 #include "ui/SignalStation.h"
diff --git a/src/ui/keypair_details/KeyPairSubkeyTab.h b/src/ui/dialog/keypair_details/KeyPairSubkeyTab.h
index a64d143c..a93ebca5 100644
--- a/src/ui/keypair_details/KeyPairSubkeyTab.h
+++ b/src/ui/dialog/keypair_details/KeyPairSubkeyTab.h
@@ -32,7 +32,7 @@
 #include "KeySetExpireDateDialog.h"
 #include "core/GpgContext.h"
 #include "ui/GpgFrontendUI.h"
-#include "ui/key_generate/SubkeyGenerateDialog.h"
+#include "ui/dialog/key_generate/SubkeyGenerateDialog.h"
 
 namespace GpgFrontend::UI {
 
diff --git a/src/ui/keypair_details/KeyPairUIDTab.cpp b/src/ui/dialog/keypair_details/KeyPairUIDTab.cpp
index 4cc835a8..b923dbec 100644
--- a/src/ui/keypair_details/KeyPairUIDTab.cpp
+++ b/src/ui/dialog/keypair_details/KeyPairUIDTab.cpp
@@ -24,7 +24,7 @@
  *
  */
 
-#include "ui/keypair_details/KeyPairUIDTab.h"
+#include "KeyPairUIDTab.h"
 
 #include "core/function/gpg/GpgKeyGetter.h"
 #include "core/function/gpg/GpgKeyManager.h"
diff --git a/src/ui/keypair_details/KeyPairUIDTab.h b/src/ui/dialog/keypair_details/KeyPairUIDTab.h
index fae8f9f2..fae8f9f2 100644
--- a/src/ui/keypair_details/KeyPairUIDTab.h
+++ b/src/ui/dialog/keypair_details/KeyPairUIDTab.h
diff --git a/src/ui/keypair_details/KeySetExpireDateDialog.cpp b/src/ui/dialog/keypair_details/KeySetExpireDateDialog.cpp
index f2ccc240..2c10b895 100644
--- a/src/ui/keypair_details/KeySetExpireDateDialog.cpp
+++ b/src/ui/dialog/keypair_details/KeySetExpireDateDialog.cpp
@@ -26,7 +26,7 @@
  *
  */
 
-#include "ui/keypair_details/KeySetExpireDateDialog.h"
+#include "KeySetExpireDateDialog.h"
 
 #include <utility>
 
@@ -40,7 +40,7 @@ namespace GpgFrontend::UI {
 
 KeySetExpireDateDialog::KeySetExpireDateDialog(const KeyId& key_id,
                                                QWidget* parent)
-    : QDialog(parent),
+    : GeneralDialog(typeid(KeySetExpireDateDialog).name(), parent),
       ui_(std::make_shared<Ui_ModifiedExpirationDateTime>()),
       m_key_(GpgKeyGetter::GetInstance().GetKey(key_id)) {
   init();
@@ -49,7 +49,7 @@ KeySetExpireDateDialog::KeySetExpireDateDialog(const KeyId& key_id,
 KeySetExpireDateDialog::KeySetExpireDateDialog(const KeyId& key_id,
                                                std::string subkey_fpr,
                                                QWidget* parent)
-    : QDialog(parent),
+    : GeneralDialog(typeid(KeySetExpireDateDialog).name(), parent),
       ui_(std::make_shared<Ui_ModifiedExpirationDateTime>()),
       m_key_(GpgKeyGetter::GetInstance().GetKey(key_id)),
       m_subkey_(std::move(subkey_fpr)) {
diff --git a/src/ui/keypair_details/KeySetExpireDateDialog.h b/src/ui/dialog/keypair_details/KeySetExpireDateDialog.h
index 3c0b62f7..3cd6cd01 100644
--- a/src/ui/keypair_details/KeySetExpireDateDialog.h
+++ b/src/ui/dialog/keypair_details/KeySetExpireDateDialog.h
@@ -33,12 +33,13 @@
 #include "core/model/GpgKey.h"
 #include "core/model/GpgSubKey.h"
 #include "ui/GpgFrontendUI.h"
+#include "ui/dialog/GeneralDialog.h"
 
 class Ui_ModifiedExpirationDateTime;
 
 namespace GpgFrontend::UI {
 
-class KeySetExpireDateDialog : public QDialog {
+class KeySetExpireDateDialog : public GeneralDialog {
   Q_OBJECT
  public:
   /**
diff --git a/src/ui/keypair_details/KeyUIDSignDialog.cpp b/src/ui/dialog/keypair_details/KeyUIDSignDialog.cpp
index 2ed45512..0f7de587 100644
--- a/src/ui/keypair_details/KeyUIDSignDialog.cpp
+++ b/src/ui/dialog/keypair_details/KeyUIDSignDialog.cpp
@@ -24,7 +24,7 @@
  *
  */
 
-#include "ui/keypair_details/KeyUIDSignDialog.h"
+#include "KeyUIDSignDialog.h"
 
 #include "core/function/gpg/GpgKeyGetter.h"
 #include "core/function/gpg/GpgKeyManager.h"
@@ -34,7 +34,9 @@ namespace GpgFrontend::UI {
 
 KeyUIDSignDialog::KeyUIDSignDialog(const GpgKey& key, UIDArgsListPtr uid,
                                    QWidget* parent)
-    : QDialog(parent), m_uids_(std::move(uid)), m_key_(key) {
+    : GeneralDialog(typeid(KeyUIDSignDialog).name(), parent),
+      m_uids_(std::move(uid)),
+      m_key_(key) {
   const auto key_id = m_key_.GetId();
   m_key_list_ = new KeyList(KeyMenuAbility::NONE, this);
   m_key_list_->AddListGroupTab(
diff --git a/src/ui/keypair_details/KeyUIDSignDialog.h b/src/ui/dialog/keypair_details/KeyUIDSignDialog.h
index 7c1cb58c..bfaff6d2 100644
--- a/src/ui/keypair_details/KeyUIDSignDialog.h
+++ b/src/ui/dialog/keypair_details/KeyUIDSignDialog.h
@@ -29,11 +29,12 @@
 
 #include "core/GpgContext.h"
 #include "ui/GpgFrontendUI.h"
+#include "ui/dialog/GeneralDialog.h"
 #include "ui/widgets/KeyList.h"
 
 namespace GpgFrontend::UI {
 
-class KeyUIDSignDialog : public QDialog {
+class KeyUIDSignDialog : public GeneralDialog {
   Q_OBJECT
 
  public:
diff --git a/src/ui/settings/SettingsAdvanced.cpp b/src/ui/dialog/settings/SettingsAdvanced.cpp
index 516d4d02..516d4d02 100644
--- a/src/ui/settings/SettingsAdvanced.cpp
+++ b/src/ui/dialog/settings/SettingsAdvanced.cpp
diff --git a/src/ui/settings/SettingsAdvanced.h b/src/ui/dialog/settings/SettingsAdvanced.h
index c1a3d5a6..c1a3d5a6 100644
--- a/src/ui/settings/SettingsAdvanced.h
+++ b/src/ui/dialog/settings/SettingsAdvanced.h
diff --git a/src/ui/settings/SettingsAppearance.cpp b/src/ui/dialog/settings/SettingsAppearance.cpp
index 7e54c9f8..17471a0d 100644
--- a/src/ui/settings/SettingsAppearance.cpp
+++ b/src/ui/dialog/settings/SettingsAppearance.cpp
@@ -114,11 +114,10 @@ AppearanceTab::AppearanceTab(QWidget* parent) : QWidget(parent) {
  * appropriately
  **********************************/
 void AppearanceTab::SetSettings() {
+  SettingsObject general_settings_state("general_settings_state");
 
-  SettingsObject main_windows_state("main_windows_state");
-
-  int width = main_windows_state.Check("icon_size").Check("width", 24),
-      height = main_windows_state.Check("icon_size").Check("height", 24);
+  int width = general_settings_state.Check("icon_size").Check("width", 24),
+      height = general_settings_state.Check("icon_size").Check("height", 24);
 
   auto icon_size = QSize(width, height);
 
@@ -136,7 +135,7 @@ void AppearanceTab::SetSettings() {
 
   // icon_style
   int s_icon_style =
-      main_windows_state.Check("icon_style", Qt::ToolButtonTextUnderIcon);
+      general_settings_state.Check("icon_style", Qt::ToolButtonTextUnderIcon);
   auto icon_style = static_cast<Qt::ToolButtonStyle>(s_icon_style);
 
   switch (icon_style) {
@@ -153,10 +152,10 @@ void AppearanceTab::SetSettings() {
       break;
   }
 
-  bool window_save = main_windows_state.Check("window_save", true);
+  bool window_save = general_settings_state.Check("window_save", true);
   if (window_save) window_size_check_box_->setCheckState(Qt::Checked);
 
-  auto info_font_size = main_windows_state.Check("info_font_size", 10);
+  auto info_font_size = general_settings_state.Check("font_size", 10);
   if (info_font_size < 9 || info_font_size > 18) info_font_size = 10;
   info_board_font_size_spin_->setValue(info_font_size);
 }
@@ -167,7 +166,7 @@ void AppearanceTab::SetSettings() {
  *************************************/
 void AppearanceTab::ApplySettings() {
 
-  SettingsObject main_windows_state("main_windows_state");
+  SettingsObject general_settings_state("general_settings_state");
 
   int icon_size = 24;
   switch (icon_size_group_->checkedId()) {
@@ -182,8 +181,8 @@ void AppearanceTab::ApplySettings() {
       break;
   }
 
-  main_windows_state["icon_size"]["width"] = icon_size;
-  main_windows_state["icon_size"]["height"] = icon_size;
+  general_settings_state["icon_size"]["width"] = icon_size;
+  general_settings_state["icon_size"]["height"] = icon_size;
 
   auto icon_style = Qt::ToolButtonTextUnderIcon;
   switch (icon_style_group_->checkedId()) {
@@ -198,12 +197,11 @@ void AppearanceTab::ApplySettings() {
       break;
   }
 
-  main_windows_state["icon_style"] = icon_style;
-
-  main_windows_state["window_save"] = window_size_check_box_->isChecked();
+  general_settings_state["icon_style"] = icon_style;
 
-  main_windows_state["info_font_size"] = info_board_font_size_spin_->value();
+  general_settings_state["window_save"] = window_size_check_box_->isChecked();
 
+  general_settings_state["info_font_size"] = info_board_font_size_spin_->value();
 }
 
 }  // namespace GpgFrontend::UI
diff --git a/src/ui/settings/SettingsAppearance.h b/src/ui/dialog/settings/SettingsAppearance.h
index 7110d992..7110d992 100644
--- a/src/ui/settings/SettingsAppearance.h
+++ b/src/ui/dialog/settings/SettingsAppearance.h
diff --git a/src/ui/settings/SettingsDialog.cpp b/src/ui/dialog/settings/SettingsDialog.cpp
index eefdd3c7..e2677a0f 100644
--- a/src/ui/settings/SettingsDialog.cpp
+++ b/src/ui/dialog/settings/SettingsDialog.cpp
@@ -28,17 +28,18 @@
 
 #include "SettingsDialog.h"
 
+#include "SettingsAdvanced.h"
+#include "SettingsAppearance.h"
+#include "SettingsGeneral.h"
+#include "SettingsKeyServer.h"
+#include "SettingsNetwork.h"
 #include "core/function/GlobalSettingStation.h"
 #include "ui/main_window/MainWindow.h"
-#include "ui/settings/SettingsAdvanced.h"
-#include "ui/settings/SettingsAppearance.h"
-#include "ui/settings/SettingsGeneral.h"
-#include "ui/settings/SettingsKeyServer.h"
-#include "ui/settings/SettingsNetwork.h"
 
 namespace GpgFrontend::UI {
 
-SettingsDialog::SettingsDialog(QWidget* parent) : QDialog(parent) {
+SettingsDialog::SettingsDialog(QWidget* parent)
+    : GeneralDialog(typeid(SettingsDialog).name(), parent) {
   tab_widget_ = new QTabWidget();
   general_tab_ = new GeneralTab();
   appearance_tab_ = new AppearanceTab();
diff --git a/src/ui/settings/SettingsDialog.h b/src/ui/dialog/settings/SettingsDialog.h
index e123cc6c..172370d0 100755..100644
--- a/src/ui/settings/SettingsDialog.h
+++ b/src/ui/dialog/settings/SettingsDialog.h
@@ -30,6 +30,7 @@
 #define __SETTINGSDIALOG_H__
 
 #include "ui/GpgFrontendUI.h"
+#include "ui/dialog/GeneralDialog.h"
 #include "ui/widgets/KeyList.h"
 
 namespace GpgFrontend::UI {
@@ -43,7 +44,7 @@ class NetworkTab;
  * @brief
  *
  */
-class SettingsDialog : public QDialog {
+class SettingsDialog : public GeneralDialog {
   Q_OBJECT
 
  public:
@@ -54,7 +55,7 @@ class SettingsDialog : public QDialog {
    */
   explicit SettingsDialog(QWidget* parent = nullptr);
 
-  GeneralTab* general_tab_;  ///<
+  GeneralTab* general_tab_;        ///<
   AppearanceTab* appearance_tab_;  ///<
   KeyserverTab* key_server_tab_;   ///<
   NetworkTab* network_tab_;        ///<
diff --git a/src/ui/settings/SettingsGeneral.cpp b/src/ui/dialog/settings/SettingsGeneral.cpp
index 3c7bca32..3c7bca32 100644
--- a/src/ui/settings/SettingsGeneral.cpp
+++ b/src/ui/dialog/settings/SettingsGeneral.cpp
diff --git a/src/ui/settings/SettingsGeneral.h b/src/ui/dialog/settings/SettingsGeneral.h
index b3e7d904..b3e7d904 100644
--- a/src/ui/settings/SettingsGeneral.h
+++ b/src/ui/dialog/settings/SettingsGeneral.h
diff --git a/src/ui/settings/SettingsKeyServer.cpp b/src/ui/dialog/settings/SettingsKeyServer.cpp
index 94655871..2c09b66c 100644
--- a/src/ui/settings/SettingsKeyServer.cpp
+++ b/src/ui/dialog/settings/SettingsKeyServer.cpp
@@ -120,23 +120,30 @@ KeyserverTab::KeyserverTab(QWidget* parent)
  * appropriately
  **********************************/
 void KeyserverTab::SetSettings() {
-  SettingsObject key_server_json("key_server");
-
-  const auto key_server_list =
-      key_server_json.Check("server_list", nlohmann::json::array());
+  try {
+    SettingsObject key_server_json("key_server");
 
-  for (const auto& key_server : key_server_list) {
-    const auto key_server_str = key_server.get<std::string>();
-    this->key_server_str_list_.append(key_server_str.c_str());
-  }
+    const auto key_server_list =
+        key_server_json.Check("server_list", nlohmann::json::array());
 
-  int default_key_server_index = key_server_json.Check("default_server", 0);
-  std::string default_key_server =
-      key_server_list[default_key_server_index].get<std::string>();
+    for (const auto& key_server : key_server_list) {
+      const auto key_server_str = key_server.get<std::string>();
+      this->key_server_str_list_.append(key_server_str.c_str());
+    }
 
-  if (!key_server_str_list_.contains(default_key_server.c_str()))
-    key_server_str_list_.append(default_key_server.c_str());
-  default_key_server_ = QString::fromStdString(default_key_server);
+    int default_key_server_index = key_server_json.Check("default_server", 0);
+    if (default_key_server_index >= key_server_list.size()) {
+      throw std::runtime_error("default_server index out of range");
+    }
+    std::string default_key_server =
+        key_server_list[default_key_server_index].get<std::string>();
+
+    if (!key_server_str_list_.contains(default_key_server.c_str()))
+      key_server_str_list_.append(default_key_server.c_str());
+    default_key_server_ = QString::fromStdString(default_key_server);
+  } catch (const std::exception& e) {
+    LOG(ERROR) << "Error reading key-server settings: " << e.what();
+  }
 }
 
 void KeyserverTab::slot_add_key_server() {
diff --git a/src/ui/settings/SettingsKeyServer.h b/src/ui/dialog/settings/SettingsKeyServer.h
index f983e69b..f983e69b 100644
--- a/src/ui/settings/SettingsKeyServer.h
+++ b/src/ui/dialog/settings/SettingsKeyServer.h
diff --git a/src/ui/settings/SettingsNetwork.cpp b/src/ui/dialog/settings/SettingsNetwork.cpp
index d4edae42..d4edae42 100644
--- a/src/ui/settings/SettingsNetwork.cpp
+++ b/src/ui/dialog/settings/SettingsNetwork.cpp
diff --git a/src/ui/settings/SettingsNetwork.h b/src/ui/dialog/settings/SettingsNetwork.h
index d4c0d00d..d4c0d00d 100644
--- a/src/ui/settings/SettingsNetwork.h
+++ b/src/ui/dialog/settings/SettingsNetwork.h
diff --git a/src/ui/main_window/GeneralMainWindow.cpp b/src/ui/main_window/GeneralMainWindow.cpp
new file mode 100644
index 00000000..7df73aba
--- /dev/null
+++ b/src/ui/main_window/GeneralMainWindow.cpp
@@ -0,0 +1,135 @@
+/**
+ * Copyright (C) 2021 Saturneric
+ *
+ * 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
+ *
+ */
+
+#include "GeneralMainWindow.h"
+
+#include <utility>
+
+#include "ui/struct/SettingsObject.h"
+
+GpgFrontend::UI::GeneralMainWindow::GeneralMainWindow(std::string name,
+                                                      QWidget* parent)
+    : name_(std::move(name)), QMainWindow(parent) {
+  slot_restore_settings();
+}
+
+GpgFrontend::UI::GeneralMainWindow::~GeneralMainWindow() = default;
+
+void GpgFrontend::UI::GeneralMainWindow::closeEvent(QCloseEvent* event) {
+  slot_save_settings();
+  QMainWindow::closeEvent(event);
+}
+
+void GpgFrontend::UI::GeneralMainWindow::slot_restore_settings() noexcept {
+  try {
+    LOG(INFO) << name_ << _("Called");
+
+    SettingsObject general_windows_state(name_ + "_state");
+
+    std::string window_state = general_windows_state.Check(
+        "window_state", saveState().toBase64().toStdString());
+
+    // state sets pos & size of dock-widgets
+    this->restoreState(
+        QByteArray::fromBase64(QByteArray::fromStdString(window_state)));
+
+    bool window_save = general_windows_state.Check("window_save", true);
+
+    // Restore window size & location
+    if (window_save) {
+      int x = general_windows_state.Check("window_pos").Check("x", 100),
+          y = general_windows_state.Check("window_pos").Check("y", 100);
+
+      this->move({x, y});
+      pos_ = {x, y};
+
+      int width =
+              general_windows_state.Check("window_size").Check("width", 800),
+          height =
+              general_windows_state.Check("window_size").Check("height", 450);
+
+      this->resize({width, height});
+      size_ = {width, height};
+    }
+
+
+    // appearance
+    SettingsObject general_settings_state("general_settings_state");
+
+    int width = general_settings_state.Check("icon_size").Check("width", 24),
+        height = general_settings_state.Check("icon_size").Check("height", 24);
+    LOG(INFO) << "icon_size" << width << height;
+
+    icon_size_ = {width, height};
+    font_size_ = general_settings_state.Check("font_size", 10);
+
+    this->setIconSize(icon_size_);
+
+    // icon_style
+    int s_icon_style =
+        general_settings_state.Check("icon_style", Qt::ToolButtonTextUnderIcon);
+    this->setToolButtonStyle(static_cast<Qt::ToolButtonStyle>(s_icon_style));
+    icon_style_ = toolButtonStyle();
+
+  } catch (...) {
+    LOG(ERROR) << name_ << "error";
+  }
+}
+
+void GpgFrontend::UI::GeneralMainWindow::slot_save_settings() noexcept {
+  try {
+    LOG(INFO) << name_ << _("Called");
+
+    SettingsObject general_windows_state(name_ + "_state");
+
+    // window position and size
+    general_windows_state["window_state"] =
+        saveState().toBase64().toStdString();
+    general_windows_state["window_pos"]["x"] = pos().x();
+    general_windows_state["window_pos"]["y"] = pos().y();
+
+    general_windows_state["window_size"]["width"] = size_.width();
+    general_windows_state["window_size"]["height"] = size_.height();
+    general_windows_state["window_save"] = true;
+
+    SettingsObject general_settings_state("general_settings_state");
+
+    // icon size
+    general_settings_state["icon_size"]["width"] = icon_size_.width();
+    general_settings_state["icon_size"]["height"] = icon_size_.height();
+
+    // font size
+    general_settings_state["font_size"] = font_size_;
+
+    // tool button style
+    general_settings_state["icon_style"] = this->toolButtonStyle();
+
+  } catch (...) {
+    LOG(ERROR) << name_ << "error";
+  }
+}
diff --git a/src/ui/main_window/GeneralMainWindow.h b/src/ui/main_window/GeneralMainWindow.h
new file mode 100644
index 00000000..71327100
--- /dev/null
+++ b/src/ui/main_window/GeneralMainWindow.h
@@ -0,0 +1,81 @@
+/**
+ * Copyright (C) 2021 Saturneric
+ *
+ * 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
+ *
+ */
+
+#ifndef GPGFRONTEND_GENERALMAINWINDOW_H
+#define GPGFRONTEND_GENERALMAINWINDOW_H
+
+#include "ui/GpgFrontendUI.h"
+
+namespace GpgFrontend::UI {
+
+/**
+ *
+ */
+class GeneralMainWindow : public QMainWindow {
+ public:
+  /**
+   *
+   * @param name
+   */
+  explicit GeneralMainWindow(std::string name, QWidget* parent = nullptr);
+
+  /**
+   *
+   */
+  ~GeneralMainWindow() override;
+
+ protected:
+  /**
+   *
+   * @param event
+   */
+  void closeEvent(QCloseEvent* event);
+
+  QSize icon_size_{};               ///<
+  int font_size_{};                 ///<
+  Qt::ToolButtonStyle icon_style_;  ///<
+
+ private slots:
+  /**
+   *
+   */
+  void slot_restore_settings() noexcept;
+
+  /**
+   *
+   */
+  void slot_save_settings() noexcept;
+
+ private:
+  std::string name_;  ///<
+  QPoint pos_;        ///<
+  QSize size_;        ///<
+};
+}  // namespace GpgFrontend::UI
+
+#endif  // GPGFRONTEND_GENERALMAINWINDOW_H
diff --git a/src/ui/KeyMgmt.cpp b/src/ui/main_window/KeyMgmt.cpp
index 30bc8a1b..6dc2b14f 100755..100644
--- a/src/ui/KeyMgmt.cpp
+++ b/src/ui/main_window/KeyMgmt.cpp
@@ -26,24 +26,25 @@
  *
  */
 
-#include "ui/KeyMgmt.h"
+#include "KeyMgmt.h"
 
 #include <utility>
 
+#include "core/function/GlobalSettingStation.h"
+#include "core/function/KeyPackageOperator.h"
 #include "core/function/gpg/GpgKeyGetter.h"
 #include "core/function/gpg/GpgKeyImportExporter.h"
 #include "core/function/gpg/GpgKeyOpera.h"
-#include "core/function/KeyPackageOperator.h"
 #include "ui/SignalStation.h"
 #include "ui/UserInterfaceUtils.h"
-#include "ui/import_export/ExportKeyPackageDialog.h"
-#include "ui/key_generate/SubkeyGenerateDialog.h"
+#include "ui/dialog/import_export/ExportKeyPackageDialog.h"
+#include "ui/dialog/key_generate/SubkeyGenerateDialog.h"
 #include "ui/main_window/MainWindow.h"
-#include "core/function/GlobalSettingStation.h"
 
 namespace GpgFrontend::UI {
 
-KeyMgmt::KeyMgmt(QWidget* parent) : QMainWindow(parent) {
+KeyMgmt::KeyMgmt(QWidget* parent)
+    : GeneralMainWindow("key_management", parent) {
   /* the list of Keys available*/
   key_list_ = new KeyList(KeyMenuAbility::ALL, this);
 
@@ -105,53 +106,6 @@ KeyMgmt::KeyMgmt(QWidget* parent) : QMainWindow(parent) {
 
   auto& settings = GlobalSettingStation::GetInstance().GetUISettings();
 
-  try {
-    int width = settings.lookup("window.icon_size.width");
-    int height = settings.lookup("window.icon_size.height");
-
-    this->setIconSize(QSize(width, height));
-
-  } catch (...) {
-    LOG(ERROR) << _("Setting Operation Error") << _("icon_size");
-  }
-
-  // icon_style
-  try {
-    int s_icon_style = settings.lookup("window.icon_style");
-    auto icon_style = static_cast<Qt::ToolButtonStyle>(s_icon_style);
-    this->setToolButtonStyle(icon_style);
-  } catch (...) {
-    LOG(ERROR) << _("Setting Operation Error") << _("icon_style");
-  }
-
-  auto pos = QPoint(50, 50);
-  LOG(INFO) << "parent" << parent;
-  if (parent) pos += parent->pos();
-  LOG(INFO) << "pos default" << pos.x() << pos.y();
-  auto size = QSize(900, 600);
-
-  try {
-    int x, y, width, height;
-    x = settings.lookup("window.key_management.position.x");
-    y = settings.lookup("window.key_management.position.y");
-    width = settings.lookup("window.key_management.size.width");
-    height = settings.lookup("window.key_management.size.height");
-    pos = QPoint(x, y);
-    size = QSize(width, height);
-
-    std::string window_state =
-        settings.lookup("window.key_management.window_state");
-
-    // state sets pos & size of dock-widgets
-    this->restoreState(
-        QByteArray::fromBase64(QByteArray::fromStdString(window_state)));
-
-  } catch (...) {
-    LOG(WARNING) << "cannot read pos or size from settings";
-  }
-
-  this->resize(size);
-  this->move(pos);
   this->statusBar()->show();
 
   setWindowTitle(_("KeyPair Management"));
@@ -296,7 +250,7 @@ void KeyMgmt::create_tool_bars() {
   generateToolButton->setIcon(QIcon(":key_generate.png"));
   generateToolButton->setText(_("Generate"));
   generateToolButton->setToolTip(_("Generate A New Keypair or Subkey"));
-  generateToolButton->setToolButtonStyle(Qt::ToolButtonTextUnderIcon);
+  generateToolButton->setToolButtonStyle(icon_style_);
   keyToolBar->addWidget(generateToolButton);
 
   // add button with popup menu for import
@@ -306,7 +260,7 @@ void KeyMgmt::create_tool_bars() {
   toolButton->setIcon(QIcon(":key_import.png"));
   toolButton->setToolTip(_("Import key"));
   toolButton->setText(_("Import Key"));
-  toolButton->setToolButtonStyle(Qt::ToolButtonTextUnderIcon);
+  toolButton->setToolButtonStyle(icon_style_);
   keyToolBar->addWidget(toolButton);
 
   keyToolBar->addSeparator();
@@ -406,11 +360,6 @@ void KeyMgmt::SlotGenerateKeyDialog() {
   keyGenDialog->show();
 }
 
-void KeyMgmt::closeEvent(QCloseEvent* event) {
-  SlotSaveWindowState();
-  QMainWindow::closeEvent(event);
-}
-
 void KeyMgmt::SlotGenerateSubKey() {
   auto keys_selected = key_list_->GetSelected();
   if (keys_selected->empty()) {
@@ -434,52 +383,6 @@ void KeyMgmt::SlotGenerateSubKey() {
   auto dialog = new SubkeyGenerateDialog(key.GetId(), this);
   dialog->show();
 }
-void KeyMgmt::SlotSaveWindowState() {
-  auto& settings =
-      GpgFrontend::GlobalSettingStation::GetInstance().GetUISettings();
-
-  if (!settings.exists("window") ||
-      settings.lookup("window").getType() != libconfig::Setting::TypeGroup)
-    settings.add("window", libconfig::Setting::TypeGroup);
-
-  auto& window = settings["window"];
-
-  if (!window.exists("key_management") ||
-      window.lookup("key_management").getType() !=
-          libconfig::Setting::TypeGroup)
-    window.add("key_management", libconfig::Setting::TypeGroup);
-
-  auto& key_management = window["key_management"];
-
-  if (!key_management.exists("position") ||
-      key_management.lookup("position").getType() !=
-          libconfig::Setting::TypeGroup) {
-    auto& position =
-        key_management.add("position", libconfig::Setting::TypeGroup);
-    position.add("x", libconfig::Setting::TypeInt) = pos().x();
-    position.add("y", libconfig::Setting::TypeInt) = pos().y();
-  } else {
-    key_management["position"]["x"] = pos().x();
-    key_management["position"]["y"] = pos().y();
-  }
-
-  if (!key_management.exists("size") ||
-      key_management.lookup("size").getType() !=
-          libconfig::Setting::TypeGroup) {
-    auto& size = key_management.add("size", libconfig::Setting::TypeGroup);
-    size.add("width", libconfig::Setting::TypeInt) = QWidget::width();
-    size.add("height", libconfig::Setting::TypeInt) = QWidget::height();
-  } else {
-    key_management["size"]["width"] = QWidget::width();
-    key_management["size"]["height"] = QWidget::height();
-  }
-
-  if (!key_management.exists("window_state"))
-    key_management.add("window_state", libconfig::Setting::TypeString) =
-        saveState().toBase64().toStdString();
-
-  GlobalSettingStation::GetInstance().SyncSettings();
-}
 
 void KeyMgmt::SlotExportAsOpenSSHFormat() {
   ByteArrayPtr key_export_data = nullptr;
@@ -527,7 +430,6 @@ void KeyMgmt::SlotExportAsOpenSSHFormat() {
 }
 
 void KeyMgmt::SlotImportKeyPackage() {
-
   LOG(INFO) << "Importing key package...";
 
   auto key_package_file_name = QFileDialog::getOpenFileName(
@@ -538,8 +440,7 @@ void KeyMgmt::SlotImportKeyPackage() {
       this, _("Import Key Package Passphrase File"), {},
       QString(_("Key Package Passphrase File")) + " (*.key);;All Files (*)");
 
-  if(key_package_file_name.isEmpty() || key_file_name.isEmpty())
-    return;
+  if (key_package_file_name.isEmpty() || key_file_name.isEmpty()) return;
 
   GpgImportInformation info;
 
diff --git a/src/ui/KeyMgmt.h b/src/ui/main_window/KeyMgmt.h
index 25ee80c5..2073113a 100755..100644
--- a/src/ui/KeyMgmt.h
+++ b/src/ui/main_window/KeyMgmt.h
@@ -30,10 +30,11 @@
 #define __KEYMGMT_H__
 
 #include "ui/GpgFrontendUI.h"
-#include "ui/import_export/KeyImportDetailDialog.h"
-#include "ui/import_export/KeyServerImportDialog.h"
-#include "ui/key_generate/KeygenDialog.h"
-#include "ui/keypair_details/KeyDetailsDialog.h"
+#include "ui/dialog/import_export/KeyImportDetailDialog.h"
+#include "ui/dialog/import_export/KeyServerImportDialog.h"
+#include "ui/dialog/key_generate/KeygenDialog.h"
+#include "ui/dialog/keypair_details/KeyDetailsDialog.h"
+#include "ui/main_window/GeneralMainWindow.h"
 #include "ui/widgets/KeyList.h"
 
 namespace GpgFrontend::UI {
@@ -42,7 +43,7 @@ namespace GpgFrontend::UI {
  * @brief
  *
  */
-class KeyMgmt : public QMainWindow {
+class KeyMgmt : public GeneralMainWindow {
   Q_OBJECT
 
  public:
@@ -107,12 +108,6 @@ class KeyMgmt : public QMainWindow {
    * @brief
    *
    */
-  void SlotSaveWindowState();
-
-  /**
-   * @brief
-   *
-   */
   void SlotImportKeyPackage();
 
  signals:
@@ -176,14 +171,6 @@ class KeyMgmt : public QMainWindow {
   QAction* close_act_{};                         ///<
   QAction* show_key_details_act_{};              ///<
   KeyServerImportDialog* import_dialog_{};       ///<
-
- protected:
-  /**
-   * @brief
-   *
-   * @param event
-   */
-  void closeEvent(QCloseEvent* event) override;
 };
 
 }  // namespace GpgFrontend::UI
diff --git a/src/ui/main_window/MainWindow.cpp b/src/ui/main_window/MainWindow.cpp
index d04e3dbd..e3e4c0ab 100644
--- a/src/ui/main_window/MainWindow.cpp
+++ b/src/ui/main_window/MainWindow.cpp
@@ -36,7 +36,7 @@
 
 namespace GpgFrontend::UI {
 
-MainWindow::MainWindow() {
+MainWindow::MainWindow() : GeneralMainWindow("main_window") {
   this->setMinimumSize(1200, 700);
   this->setWindowTitle(qApp->applicationName());
 }
@@ -135,63 +135,14 @@ void MainWindow::restore_settings() {
   LOG(INFO) << _("Called");
 
   try {
-    LOG(INFO) << "restore settings main_windows_state";
-
-    SettingsObject main_windows_state("main_windows_state");
-
-    std::string window_state = main_windows_state.Check(
-        "window_state", saveState().toBase64().toStdString());
-    // state sets pos & size of dock-widgets
-    this->restoreState(
-        QByteArray::fromBase64(QByteArray::fromStdString(window_state)));
-
-    bool window_save = main_windows_state.Check("window_save", true);
-
-    // Restore window size & location
-    if (window_save) {
-      int x = main_windows_state.Check("window_pos").Check("x", 100),
-          y = main_windows_state.Check("window_pos").Check("y", 100);
-
-      auto pos = QPoint(x, y);
-
-      int width = main_windows_state.Check("window_size").Check("width", 800),
-          height = main_windows_state.Check("window_size").Check("height", 450);
-
-      auto size = QSize(width, height);
-      this->resize(size);
-      this->move(pos);
-    } else {
-      this->resize(QSize(800, 450));
-      this->move(QPoint(100, 100));
-    }
-
-    int width = main_windows_state.Check("icon_size").Check("width", 24),
-        height = main_windows_state.Check("icon_size").Check("height", 24);
-    LOG(INFO) << "icon_size" << width << height;
-
-    main_windows_state.Check("info_font_size", 10);
-
-    // icon_style
-    int s_icon_style =
-        main_windows_state.Check("icon_style", Qt::ToolButtonTextUnderIcon);
-    auto icon_style = static_cast<Qt::ToolButtonStyle>(s_icon_style);
-    this->setToolButtonStyle(icon_style);
-    import_button_->setToolButtonStyle(icon_style);
-
-    // icons ize
-    this->setIconSize(QSize(width, height));
-    import_button_->setIconSize(QSize(width, height));
-
     LOG(INFO) << "restore settings key_server";
 
     SettingsObject key_server_json("key_server");
-
-    if (!key_server_json.contains("server_list")) {
+    if (!key_server_json.contains("server_list") ||
+        key_server_json["server_list"].empty()) {
       key_server_json["server_list"] = {"https://keyserver.ubuntu.com",
-                                        "http://keys.gnupg.net",
-                                        "http://pool.sks-keyservers.net"};
+                                        "https://keys.openpgp.org"};
     }
-
     if (!key_server_json.contains("default_server")) {
       key_server_json["default_server"] = 0;
     }
@@ -216,6 +167,9 @@ void MainWindow::restore_settings() {
     bool save_key_checked = true;
     general.lookupValue("save_key_checked", save_key_checked);
 
+    // set appearance
+    import_button_->setToolButtonStyle(icon_style_);
+
     try {
       LOG(INFO) << "restore settings default_key_checked";
 
@@ -255,16 +209,6 @@ void MainWindow::save_settings() {
   auto &settings = GlobalSettingStation::GetInstance().GetUISettings();
 
   try {
-    SettingsObject main_windows_state("main_windows_state");
-
-    // window position and size
-    main_windows_state["window_state"] = saveState().toBase64().toStdString();
-    main_windows_state["window_pos"]["x"] = pos().x();
-    main_windows_state["window_pos"]["y"] = pos().y();
-
-    main_windows_state["window_size"]["width"] = size().width();
-    main_windows_state["window_size"]["height"] = size().height();
-
     bool save_key_checked = settings.lookup("general.save_key_checked");
 
     // keyid-list of private checked keys
diff --git a/src/ui/main_window/MainWindow.h b/src/ui/main_window/MainWindow.h
index a0f1a5d4..b31e2fcb 100644
--- a/src/ui/main_window/MainWindow.h
+++ b/src/ui/main_window/MainWindow.h
@@ -29,17 +29,18 @@
 #ifndef __GPGWIN_H__
 #define __GPGWIN_H__
 
+#include "KeyMgmt.h"
 #include "core/GpgConstants.h"
 #include "core/function/result_analyse/GpgDecryptResultAnalyse.h"
 #include "core/function/result_analyse/GpgEncryptResultAnalyse.h"
 #include "core/function/result_analyse/GpgSignResultAnalyse.h"
 #include "ui/GpgFrontendUI.h"
-#include "ui/KeyMgmt.h"
 #include "ui/dialog/WaitingDialog.h"
 #include "ui/dialog/Wizard.h"
-#include "ui/help/AboutDialog.h"
-#include "ui/import_export/KeyUploadDialog.h"
-#include "ui/settings/SettingsDialog.h"
+#include "ui/dialog/help/AboutDialog.h"
+#include "ui/dialog/import_export/KeyUploadDialog.h"
+#include "ui/dialog/settings/SettingsDialog.h"
+#include "ui/main_window/GeneralMainWindow.h"
 #include "ui/widgets/FindWidget.h"
 #include "ui/widgets/InfoBoardWidget.h"
 #include "ui/widgets/TextEdit.h"
@@ -49,10 +50,13 @@ namespace GpgFrontend::UI {
  * @brief
  *
  */
-class MainWindow : public QMainWindow {
+class MainWindow : public GeneralMainWindow {
   Q_OBJECT
 
  public:
+  /**
+   *
+   */
   struct CryptoMenu {
     using OperationType = unsigned int;
 
@@ -383,6 +387,7 @@ class MainWindow : public QMainWindow {
   QAction* about_act_{};                 ///< Action to open about dialog
   QAction* check_update_act_{};          ///< Action to open about dialog
   QAction* translate_act_{};             ///< Action to open about dialog
+  QAction* gnupg_act_{};             ///< Action to open about dialog
   QAction* open_settings_act_{};         ///< Action to open settings dialog
   QAction* show_key_details_act_{};      ///< Action to open key-details dialog
   QAction* start_wizard_act_{};          ///< Action to open the wizard
diff --git a/src/ui/main_window/MainWindowFileSlotFunction.cpp b/src/ui/main_window/MainWindowFileSlotFunction.cpp
index 4ab23a22..526c27c0 100644
--- a/src/ui/main_window/MainWindowFileSlotFunction.cpp
+++ b/src/ui/main_window/MainWindowFileSlotFunction.cpp
@@ -32,8 +32,8 @@
 #include "core/function/gpg/GpgFileOpera.h"
 #include "core/function/gpg/GpgKeyGetter.h"
 #include "core/thread/Task.h"
+#include "dialog/SignersPicker.h"
 #include "ui/UserInterfaceUtils.h"
-#include "ui/widgets/SignersPicker.h"
 
 namespace GpgFrontend::UI {
 
@@ -618,6 +618,9 @@ void MainWindow::SlotFileEncryptSign() {
   connect(signersPicker, &SignersPicker::finished, &loop, &QEventLoop::quit);
   loop.exec();
 
+  // return when canceled
+  if (!signersPicker->GetStatus()) return;
+
   auto signer_key_ids = signersPicker->GetCheckedSigners();
   auto p_signer_keys = GpgKeyGetter::GetInstance().GetKeys(signer_key_ids);
 
diff --git a/src/ui/main_window/MainWindowSlotFunction.cpp b/src/ui/main_window/MainWindowSlotFunction.cpp
index 0ad52248..f715046c 100644
--- a/src/ui/main_window/MainWindowSlotFunction.cpp
+++ b/src/ui/main_window/MainWindowSlotFunction.cpp
@@ -26,7 +26,6 @@
  *
  */
 
-#include <cstddef>
 #include <memory>
 #include <string>
 #include <utility>
@@ -34,15 +33,12 @@
 #include "MainWindow.h"
 #include "core/GpgConstants.h"
 #include "core/GpgModel.h"
-#include "core/function/GlobalSettingStation.h"
 #include "core/function/gpg/GpgBasicOperator.h"
 #include "core/function/gpg/GpgKeyGetter.h"
 #include "core/function/gpg/GpgKeyImportExporter.h"
-#include "core/model/GpgKey.h"
-#include "core/thread/TaskRunner.h"
 #include "ui/UserInterfaceUtils.h"
-#include "ui/help/AboutDialog.h"
-#include "ui/widgets/SignersPicker.h"
+#include "ui/dialog/help/AboutDialog.h"
+#include "dialog/SignersPicker.h"
 
 namespace GpgFrontend::UI {
 /**
@@ -427,6 +423,9 @@ void MainWindow::slot_encrypt_sign() {
   connect(signersPicker, &SignersPicker::finished, &loop, &QEventLoop::quit);
   loop.exec();
 
+  // return when canceled
+  if (!signersPicker->GetStatus()) return;
+
   auto signer_key_ids = signersPicker->GetCheckedSigners();
   auto signer_keys = GpgKeyGetter::GetInstance().GetKeys(signer_key_ids);
 
diff --git a/src/ui/main_window/MainWindowSlotUI.cpp b/src/ui/main_window/MainWindowSlotUI.cpp
index 9d81b11c..9061349e 100644
--- a/src/ui/main_window/MainWindowSlotUI.cpp
+++ b/src/ui/main_window/MainWindowSlotUI.cpp
@@ -105,17 +105,17 @@ void MainWindow::slot_open_settings_dialog() {
   connect(dialog, &SettingsDialog::finished, this, [&]() -> void {
     LOG(INFO) << "Setting Dialog Finished";
 
-    SettingsObject main_windows_state("main_windows_state");
+    SettingsObject general_settings_state("general_settings_state");
 
-    int width = main_windows_state.Check("icon_size").Check("width", 24),
-        height = main_windows_state.Check("icon_size").Check("height", 24);
+    int width = general_settings_state.Check("icon_size").Check("width", 24),
+        height = general_settings_state.Check("icon_size").Check("height", 24);
     LOG(INFO) << "icon_size" << width << height;
 
-    main_windows_state.Check("info_font_size", 10);
+    general_settings_state.Check("info_font_size", 10);
 
     // icon_style
     int s_icon_style =
-        main_windows_state.Check("icon_style", Qt::ToolButtonTextUnderIcon);
+        general_settings_state.Check("icon_style", Qt::ToolButtonTextUnderIcon);
     auto icon_style = static_cast<Qt::ToolButtonStyle>(s_icon_style);
     this->setToolButtonStyle(icon_style);
     import_button_->setToolButtonStyle(icon_style);
diff --git a/src/ui/main_window/MainWindowUI.cpp b/src/ui/main_window/MainWindowUI.cpp
index 7d798c8b..1470b731 100644
--- a/src/ui/main_window/MainWindowUI.cpp
+++ b/src/ui/main_window/MainWindowUI.cpp
@@ -251,11 +251,17 @@ void MainWindow::create_actions() {
   connect(about_act_, &QAction::triggered, this,
           [=]() { new AboutDialog(0, this); });
 
+  gnupg_act_ = new QAction(_("GnuPG"), this);
+  gnupg_act_->setIcon(QIcon(":help.png"));
+  gnupg_act_->setToolTip(_("Information about Gnupg"));
+  connect(gnupg_act_, &QAction::triggered, this,
+          [=]() { new AboutDialog(1, this); });
+
   translate_act_ = new QAction(_("Translate"), this);
   translate_act_->setIcon(QIcon(":help.png"));
   translate_act_->setToolTip(_("Information about translation"));
   connect(translate_act_, &QAction::triggered, this,
-          [=]() { new AboutDialog(1, this); });
+          [=]() { new AboutDialog(2, this); });
 
   /*
    * Check Update Menu
@@ -377,6 +383,7 @@ void MainWindow::create_menus() {
   help_menu_->addSeparator();
   help_menu_->addAction(check_update_act_);
   help_menu_->addAction(translate_act_);
+  help_menu_->addAction(gnupg_act_);
   help_menu_->addAction(about_act_);
 }
 
diff --git a/src/ui/struct/SettingsObject.h b/src/ui/struct/SettingsObject.h
index 653a543f..d1e85be5 100644
--- a/src/ui/struct/SettingsObject.h
+++ b/src/ui/struct/SettingsObject.h
@@ -69,7 +69,8 @@ class SettingsObject : public nlohmann::json {
    * @param default_value
    * @return nlohmann::json&
    */
-  nlohmann::json& Check(const std::string& key, const nlohmann::json& default_value);
+  nlohmann::json& Check(const std::string& key,
+                        const nlohmann::json& default_value);
 
   /**
    * @brief
diff --git a/src/ui/thread/KeyServerImportTask.cpp b/src/ui/thread/KeyServerImportTask.cpp
new file mode 100644
index 00000000..bf3e1822
--- /dev/null
+++ b/src/ui/thread/KeyServerImportTask.cpp
@@ -0,0 +1,64 @@
+/**
+ * Copyright (C) 2021 Saturneric
+ *
+ * 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.
+ *
+ * The source code version of this software was modified and released
+ * by Saturneric<[email protected]><[email protected]> starting on May 12, 2021.
+ *
+ */
+
+#include "ui/thread/KeyServerImportTask.h"
+
+#include <vector>
+
+GpgFrontend::UI::KeyServerImportTask::KeyServerImportTask(
+    std::string keyserver_url, std::vector<std::string> keyids)
+    : keyserver_url_(std::move(keyserver_url)),
+      keyids_(std::move(keyids)),
+      manager_(new QNetworkAccessManager(this)) {}
+
+void GpgFrontend::UI::KeyServerImportTask::run() {
+  SetFinishAfterRun(false);
+
+  QUrl keyserver_url = QUrl(keyserver_url_.c_str());
+  for (const auto& key_id : keyids_) {
+    QUrl req_url(keyserver_url.scheme() + "://" + keyserver_url.host() +
+                 "/pks/lookup?op=get&search=0x" + key_id.c_str() +
+                 "&options=mr");
+
+    reply_ = manager_->get(QNetworkRequest(req_url));
+
+    connect(reply_, &QNetworkReply::finished, this,
+            &KeyServerImportTask::dealing_reply_from_server);
+  }
+}
+
+void GpgFrontend::UI::KeyServerImportTask::dealing_reply_from_server() {
+  QByteArray buffer;
+  QNetworkReply::NetworkError network_reply = reply_->error();
+  if (network_reply == QNetworkReply::NoError) {
+    buffer = reply_->readAll();
+  }
+  emit SignalKeyServerImportResult(network_reply, buffer);
+
+  if (result_count_++ == keyids_.size() - 1) {
+    emit SignalTaskFinished();
+  }
+}
\ No newline at end of file
diff --git a/src/ui/thread/KeyServerImportTask.h b/src/ui/thread/KeyServerImportTask.h
new file mode 100644
index 00000000..7d3b66c6
--- /dev/null
+++ b/src/ui/thread/KeyServerImportTask.h
@@ -0,0 +1,80 @@
+/**
+ * Copyright (C) 2021 Saturneric
+ *
+ * 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.
+ *
+ * The source code version of this software was modified and released
+ * by Saturneric<[email protected]><[email protected]> starting on May 12, 2021.
+ *
+ */
+
+#ifndef GPGFRONTEND_KEYSERVERIMPORTTASK_H
+#define GPGFRONTEND_KEYSERVERIMPORTTASK_H
+
+#include "GpgFrontendUI.h"
+
+namespace GpgFrontend::UI {
+class KeyServerImportTask : public Thread::Task {
+  Q_OBJECT
+ public:
+  /**
+   * @brief Construct a new Key Server Search Task object
+   *
+   * @param keyserver_url
+   * @param search_string
+   */
+  KeyServerImportTask(std::string keyserver_url,
+                      std::vector<std::string> keyid);
+
+ signals:
+
+  /**
+   * @brief
+   *
+   * @param result
+   */
+  void SignalKeyServerImportResult(QNetworkReply::NetworkError reply,
+                                   QByteArray buffer);
+
+ protected:
+  /**
+   * @brief
+   *
+   */
+  void run() override;
+
+ private slots:
+
+  /**
+   * @brief
+   *
+   */
+  void dealing_reply_from_server();
+
+ private:
+  std::string keyserver_url_;        ///<
+  std::vector<std::string> keyids_;  ///<
+  int result_count_ = 0;
+
+  QNetworkAccessManager *manager_;  ///<
+  QNetworkReply *reply_;            ///<
+};
+}  // namespace GpgFrontend::UI
+
+#endif  // GPGFRONTEND_KEYSERVERIMPORTTASK_H
\ No newline at end of file
diff --git a/src/ui/thread/KeyServerSearchTask.cpp b/src/ui/thread/KeyServerSearchTask.cpp
new file mode 100644
index 00000000..0090e79d
--- /dev/null
+++ b/src/ui/thread/KeyServerSearchTask.cpp
@@ -0,0 +1,59 @@
+/**
+ * Copyright (C) 2021 Saturneric
+ *
+ * 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.
+ *
+ * The source code version of this software was modified and released
+ * by Saturneric<[email protected]><[email protected]> starting on May 12, 2021.
+ *
+ */
+
+#include "ui/thread/KeyServerSearchTask.h"
+
+#include <utility>
+
+GpgFrontend::UI::KeyServerSearchTask::KeyServerSearchTask(
+    std::string keyserver_url, std::string search_string)
+    : keyserver_url_(std::move(keyserver_url)),
+      search_string_(std::move(search_string)),
+      manager_(new QNetworkAccessManager(this)) {}
+
+void GpgFrontend::UI::KeyServerSearchTask::run() {
+  SetFinishAfterRun(false);
+
+  QUrl url_from_remote =
+      QString::fromStdString(keyserver_url_) +
+      "/pks/lookup?search=" + QString::fromStdString(search_string_) +
+      "&op=index&options=mr";
+
+  reply_ = manager_->get(QNetworkRequest(url_from_remote));
+
+  connect(reply_, &QNetworkReply::finished, this,
+          &KeyServerSearchTask::dealing_reply_from_server);
+}
+
+void GpgFrontend::UI::KeyServerSearchTask::dealing_reply_from_server() {
+  QByteArray buffer;
+  QNetworkReply::NetworkError network_reply = reply_->error();
+  if (network_reply == QNetworkReply::NoError) {
+    buffer = reply_->readAll();
+  }
+  emit SignalKeyServerSearchResult(network_reply, buffer);
+  emit SignalTaskFinished();
+}
diff --git a/src/ui/thread/KeyServerSearchTask.h b/src/ui/thread/KeyServerSearchTask.h
new file mode 100644
index 00000000..3333e949
--- /dev/null
+++ b/src/ui/thread/KeyServerSearchTask.h
@@ -0,0 +1,76 @@
+/**
+ * Copyright (C) 2021 Saturneric
+ *
+ * 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.
+ *
+ * The source code version of this software was modified and released
+ * by Saturneric<[email protected]><[email protected]> starting on May 12, 2021.
+ *
+ */
+
+#ifndef GPGFRONTEND_KEYSERVERSEARCHTASK_H
+#define GPGFRONTEND_KEYSERVERSEARCHTASK_H
+
+#include "GpgFrontendUI.h"
+
+namespace GpgFrontend::UI {
+
+class KeyServerSearchTask : public Thread::Task {
+  Q_OBJECT
+ public:
+  /**
+   * @brief Construct a new Key Server Search Task object
+   *
+   * @param keyserver_url
+   * @param search_string
+   */
+  KeyServerSearchTask(std::string keyserver_url, std::string search_string);
+
+ signals:
+
+  /**
+   * @brief
+   *
+   * @param result
+   */
+  void SignalKeyServerSearchResult(QNetworkReply::NetworkError reply,
+                                   QByteArray buffer);
+
+ protected:
+  /**
+   * @brief
+   *
+   */
+  void run() override;
+
+ private slots:
+
+  void dealing_reply_from_server();
+
+ private:
+  std::string keyserver_url_;  ///<
+  std::string search_string_;  ///<
+
+  QNetworkAccessManager *manager_;  ///<
+  QNetworkReply *reply_;            ///<
+};
+
+}  // namespace GpgFrontend::UI
+
+#endif  // GPGFRONTEND_KEYSERVERSEARCHTASK_H
\ No newline at end of file
diff --git a/src/ui/thread/ListedKeyServerTestTask.h b/src/ui/thread/ListedKeyServerTestTask.h
index 8edaccb0..aa1bac5e 100644
--- a/src/ui/thread/ListedKeyServerTestTask.h
+++ b/src/ui/thread/ListedKeyServerTestTask.h
@@ -27,11 +27,7 @@
 #ifndef GPGFRONTEND_LISTEDKEYSERVERTESTTHREAD_H
 #define GPGFRONTEND_LISTEDKEYSERVERTESTTHREAD_H
 
-#include <vector>
-
 #include "GpgFrontendUI.h"
-#include "core/thread/Task.h"
-
 namespace GpgFrontend::UI {
 
 /**
diff --git a/src/ui/widgets/FilePage.h b/src/ui/widgets/FilePage.h
index cff395a8..8e278de7 100644
--- a/src/ui/widgets/FilePage.h
+++ b/src/ui/widgets/FilePage.h
@@ -29,8 +29,6 @@
 #ifndef GPGFRONTEND_FILEPAGE_H
 #define GPGFRONTEND_FILEPAGE_H
 
-
-
 #include "ui/GpgFrontendUI.h"
 #include "ui/widgets/InfoBoardWidget.h"
 
diff --git a/src/ui/widgets/FindWidget.cpp b/src/ui/widgets/FindWidget.cpp
index defcf31c..598d8004 100644
--- a/src/ui/widgets/FindWidget.cpp
+++ b/src/ui/widgets/FindWidget.cpp
@@ -49,9 +49,11 @@ FindWidget::FindWidget(QWidget* parent, PlainTextEditorPage* edit)
 
   this->setLayout(notificationWidgetLayout);
   connect(find_edit_, &QLineEdit::textEdited, this, &FindWidget::slot_find);
-  connect(find_edit_, &QLineEdit::returnPressed, this, &FindWidget::slot_find_next);
+  connect(find_edit_, &QLineEdit::returnPressed, this,
+          &FindWidget::slot_find_next);
   connect(nextButton, &QPushButton::clicked, this, &FindWidget::slot_find_next);
-  connect(previousButton, &QPushButton::clicked, this, &FindWidget::slot_find_previous);
+  connect(previousButton, &QPushButton::clicked, this,
+          &FindWidget::slot_find_previous);
   connect(closeButton, &QPushButton::clicked, this, &FindWidget::slot_close);
 
   // The timer is necessary for setting the focus
diff --git a/src/ui/widgets/InfoBoardWidget.cpp b/src/ui/widgets/InfoBoardWidget.cpp
index ec2971cc..264a67d1 100644
--- a/src/ui/widgets/InfoBoardWidget.cpp
+++ b/src/ui/widgets/InfoBoardWidget.cpp
@@ -28,10 +28,10 @@
 
 #include "ui/widgets/InfoBoardWidget.h"
 
-#include "ui/SignalStation.h"
 #include "core/function/GlobalSettingStation.h"
-#include "ui_InfoBoard.h"
+#include "ui/SignalStation.h"
 #include "ui/struct/SettingsObject.h"
+#include "ui_InfoBoard.h"
 
 namespace GpgFrontend::UI {
 
diff --git a/src/ui/widgets/InfoBoardWidget.h b/src/ui/widgets/InfoBoardWidget.h
index 7f456777..47740456 100644
--- a/src/ui/widgets/InfoBoardWidget.h
+++ b/src/ui/widgets/InfoBoardWidget.h
@@ -31,7 +31,7 @@
 
 #include "PlainTextEditorPage.h"
 #include "core/function/result_analyse/GpgVerifyResultAnalyse.h"
-#include "ui/details/VerifyDetailsDialog.h"
+#include "ui/dialog/details/VerifyDetailsDialog.h"
 
 class Ui_InfoBoard;
 
diff --git a/src/ui/widgets/KeyList.h b/src/ui/widgets/KeyList.h
index 60449ad9..f1c88cc6 100644
--- a/src/ui/widgets/KeyList.h
+++ b/src/ui/widgets/KeyList.h
@@ -32,7 +32,7 @@
 #include <utility>
 
 #include "core/GpgContext.h"
-#include "ui/import_export/KeyImportDetailDialog.h"
+#include "ui/dialog/import_export/KeyImportDetailDialog.h"
 
 class Ui_KeyList;
 
diff --git a/src/ui/widgets/VerifyKeyDetailBox.cpp b/src/ui/widgets/VerifyKeyDetailBox.cpp
index 4c936f4f..c6c4982c 100644
--- a/src/ui/widgets/VerifyKeyDetailBox.cpp
+++ b/src/ui/widgets/VerifyKeyDetailBox.cpp
@@ -41,7 +41,7 @@ VerifyKeyDetailBox::VerifyKeyDetailBox(const GpgSignature& signature,
     case GPG_ERR_NO_PUBKEY: {
       this->setTitle("A Error Signature");
       auto* importButton = new QPushButton(_("Import from keyserver"));
-      connect(importButton,&QPushButton::clicked, this,
+      connect(importButton, &QPushButton::clicked, this,
               &VerifyKeyDetailBox::slot_import_form_key_server);
 
       this->setTitle(QString(_("Key not present with id 0x")) + fpr_.c_str());
diff --git a/src/ui/widgets/VerifyKeyDetailBox.h b/src/ui/widgets/VerifyKeyDetailBox.h
index 57f133d5..6ed9fd52 100644
--- a/src/ui/widgets/VerifyKeyDetailBox.h
+++ b/src/ui/widgets/VerifyKeyDetailBox.h
@@ -29,7 +29,7 @@
 #ifndef __VERIFYKEYDETAILBOX_H__
 #define __VERIFYKEYDETAILBOX_H__
 
-#include "ui/import_export/KeyServerImportDialog.h"
+#include "ui/dialog/import_export/KeyServerImportDialog.h"
 #include "ui/widgets/KeyList.h"
 
 namespace GpgFrontend::UI {