Add i18n Support

1. Remove Qt Linguist.
2. Add GNU gettext libraries.
3. Modified source codes to meet with i18n support.

17 files changed, 149 insertions, 131 deletions

diff --git a/src/ui/widgets/EditorPage.cpp b/src/ui/widgets/EditorPage.cpp
index 26976048..6fd72c20 100644
--- a/src/ui/widgets/EditorPage.cpp
+++ b/src/ui/widgets/EditorPage.cpp
@@ -1,7 +1,7 @@
 /**
- * This file is part of GPGFrontend.
+ * This file is part of GpgFrontend.
  *
- * GPGFrontend is free software: you can redistribute it and/or modify
+ * 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.
@@ -41,7 +41,7 @@ EditorPage::EditorPage(QString filePath, QWidget* parent)
   mainLayout->addWidget(textPage);
   mainLayout->setContentsMargins(0, 0, 0, 0);
   setLayout(mainLayout);
-  
+
   textPage->setFocus();
 
   // Front in same width
diff --git a/src/ui/widgets/EditorPage.h b/src/ui/widgets/EditorPage.h
index 0f637500..1e19a0de 100644
--- a/src/ui/widgets/EditorPage.h
+++ b/src/ui/widgets/EditorPage.h
@@ -1,7 +1,7 @@
 /**
- * This file is part of GPGFrontend.
+ * This file is part of GpgFrontend.
  *
- * GPGFrontend is free software: you can redistribute it and/or modify
+ * 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.
diff --git a/src/ui/widgets/FilePage.cpp b/src/ui/widgets/FilePage.cpp
index 2cb59ae1..4b88092b 100644
--- a/src/ui/widgets/FilePage.cpp
+++ b/src/ui/widgets/FilePage.cpp
@@ -1,7 +1,7 @@
 /**
- * This file is part of GPGFrontend.
+ * This file is part of GpgFrontend.
  *
- * GPGFrontend is free software: you can redistribute it and/or modify
+ * 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.
@@ -167,17 +167,17 @@ void FilePage::slotGoPath() {
 void FilePage::createPopupMenu() {
   popUpMenu = new QMenu();
 
-  auto openItemAct = new QAction(tr("Open"), this);
+  auto openItemAct = new QAction(_("Open"), this);
   connect(openItemAct, SIGNAL(triggered()), this, SLOT(slotOpenItem()));
-  auto deleteItemAct = new QAction(tr("Delete"), this);
+  auto deleteItemAct = new QAction(_("Delete"), this);
   connect(deleteItemAct, SIGNAL(triggered()), this, SLOT(slotDeleteItem()));
-  encryptItemAct = new QAction(tr("Encrypt and Sign"), this);
+  encryptItemAct = new QAction(_("Encrypt and Sign"), this);
   connect(encryptItemAct, SIGNAL(triggered()), this, SLOT(slotEncryptItem()));
-  decryptItemAct = new QAction(tr("Decrypt and Verify"), this);
+  decryptItemAct = new QAction(_("Decrypt and Verify"), this);
   connect(decryptItemAct, SIGNAL(triggered()), this, SLOT(slotDecryptItem()));
-  signItemAct = new QAction(tr("Only Sign"), this);
+  signItemAct = new QAction(_("Only Sign"), this);
   connect(signItemAct, SIGNAL(triggered()), this, SLOT(slotSignItem()));
-  verifyItemAct = new QAction(tr("Only Verify"), this);
+  verifyItemAct = new QAction(_("Only Verify"), this);
   connect(verifyItemAct, SIGNAL(triggered()), this, SLOT(slotVerifyItem()));
 
   popUpMenu->addAction(openItemAct);
@@ -233,8 +233,8 @@ void FilePage::slotDeleteItem() {
   QModelIndex index = dirTreeView->currentIndex();
   QVariant data = dirTreeView->model()->data(index);
 
-  auto ret = QMessageBox::warning(this, tr("Warning"),
-                                  tr("Are you sure you want to delete it?"),
+  auto ret = QMessageBox::warning(this, _("Warning"),
+                                  _("Are you sure you want to delete it?"),
                                   QMessageBox::Ok | QMessageBox::Cancel);
 
   if (ret == QMessageBox::Cancel) return;
@@ -242,8 +242,8 @@ void FilePage::slotDeleteItem() {
   qDebug() << "Delete Item" << data.toString();
 
   if (!dirModel->remove(index)) {
-    QMessageBox::critical(this, tr("Error"),
-                          tr("Unable to delete the file or folder."));
+    QMessageBox::critical(this, _("Error"),
+                          _("Unable to delete the file or folder."));
   }
 }
 
diff --git a/src/ui/widgets/FilePage.h b/src/ui/widgets/FilePage.h
index 9fd4308e..31be81f3 100644
--- a/src/ui/widgets/FilePage.h
+++ b/src/ui/widgets/FilePage.h
@@ -1,7 +1,7 @@
 /**
- * This file is part of GPGFrontend.
+ * This file is part of GpgFrontend.
  *
- * GPGFrontend is free software: you can redistribute it and/or modify
+ * 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.
diff --git a/src/ui/widgets/GroupKeyList.cpp b/src/ui/widgets/GroupKeyList.cpp
index 404e8faf..efba4428 100644
--- a/src/ui/widgets/GroupKeyList.cpp
+++ b/src/ui/widgets/GroupKeyList.cpp
@@ -1,7 +1,7 @@
 /**
- * This file is part of GPGFrontend.
+ * This file is part of GpgFrontend.
  *
- * GPGFrontend is free software: you can redistribute it and/or modify
+ * 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.
diff --git a/src/ui/widgets/GroupKeyList.h b/src/ui/widgets/GroupKeyList.h
index f0c9e2c6..163c7126 100644
--- a/src/ui/widgets/GroupKeyList.h
+++ b/src/ui/widgets/GroupKeyList.h
@@ -1,7 +1,7 @@
 /**
- * This file is part of GPGFrontend.
+ * This file is part of GpgFrontend.
  *
- * GPGFrontend is free software: you can redistribute it and/or modify
+ * 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.
diff --git a/src/ui/widgets/HelpPage.cpp b/src/ui/widgets/HelpPage.cpp
index dfc24929..7b1e86c0 100644
--- a/src/ui/widgets/HelpPage.cpp
+++ b/src/ui/widgets/HelpPage.cpp
@@ -1,7 +1,7 @@
 /**
- * This file is part of GPGFrontend.
+ * This file is part of GpgFrontend.
  *
- * GPGFrontend is free software: you can redistribute it and/or modify
+ * 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.
@@ -77,8 +77,6 @@ QUrl HelpPage::localizedHelp(const QUrl& url) {
   }
 }
 
-QTextBrowser* HelpPage::getBrowser() {
-  return browser;
-}
+QTextBrowser* HelpPage::getBrowser() { return browser; }
 
 }  // namespace GpgFrontend::UI
diff --git a/src/ui/widgets/InfoBoardWidget.cpp b/src/ui/widgets/InfoBoardWidget.cpp
index aac80514..7de99a2b 100644
--- a/src/ui/widgets/InfoBoardWidget.cpp
+++ b/src/ui/widgets/InfoBoardWidget.cpp
@@ -1,7 +1,7 @@
 /**
- * This file is part of GPGFrontend.
+ * This file is part of GpgFrontend.
  *
- * GPGFrontend is free software: you can redistribute it and/or modify
+ * 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.
@@ -39,7 +39,7 @@ InfoBoardWidget::InfoBoardWidget(QWidget* parent, KeyList* keyList)
   infoBoard->setContentsMargins(0, 0, 0, 0);
 
   importFromKeyserverAct =
-      new QAction(tr("Import missing key from Keyserver"), this);
+      new QAction(_("Import missing key from Keyserver"), this);
   connect(importFromKeyserverAct, SIGNAL(triggered()), this,
           SLOT(slotImportFromKeyserver()));
 
@@ -57,7 +57,7 @@ InfoBoardWidget::InfoBoardWidget(QWidget* parent, KeyList* keyList)
   actionButtonLayout->setSpacing(0);
   actionButtonMenu->setLayout(actionButtonLayout);
 
-  auto label = new QLabel(tr("Optional Actions"));
+  auto label = new QLabel(_("Optional Actions"));
   label->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum);
   label->setContentsMargins(0, 0, 0, 0);
 
diff --git a/src/ui/widgets/InfoBoardWidget.h b/src/ui/widgets/InfoBoardWidget.h
index 5512a78a..858aa014 100644
--- a/src/ui/widgets/InfoBoardWidget.h
+++ b/src/ui/widgets/InfoBoardWidget.h
@@ -1,7 +1,7 @@
 /**
- * This file is part of GPGFrontend.
+ * This file is part of GpgFrontend.
  *
- * GPGFrontend is free software: you can redistribute it and/or modify
+ * 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.
diff --git a/src/ui/widgets/KeyList.cpp b/src/ui/widgets/KeyList.cpp
index 4cb30acf..b3391c68 100644
--- a/src/ui/widgets/KeyList.cpp
+++ b/src/ui/widgets/KeyList.cpp
@@ -1,7 +1,7 @@
 /**
- * This file is part of GPGFrontend.
+ * This file is part of GpgFrontend.
  *
- * GPGFrontend is free software: you can redistribute it and/or modify
+ * 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.
@@ -78,8 +78,8 @@ KeyList::KeyList(KeyListRow::KeyType selectType,
   }
 
   QStringList labels;
-  labels << tr("Select") << tr("Type") << tr("Name") << tr("Email Address")
-         << tr("Usage") << tr("Validity") << tr("Finger Print");
+  labels << _("Select") << _("Type") << _("Name") << _("Email Address")
+         << _("Usage") << _("Validity") << _("Finger Print");
 
   mKeyList->setHorizontalHeaderLabels(labels);
   mKeyList->horizontalHeader()->setStretchLastSection(false);
@@ -103,7 +103,6 @@ KeyList::KeyList(KeyListRow::KeyType selectType,
 }
 
 void KeyList::slotRefresh() {
-
   LOG(INFO) << "KeyList::slotRefresh Called";
 
   auto keyList = getChecked();
@@ -302,14 +301,16 @@ void KeyList::addMenuAction(QAction* act) { popupMenu->addAction(act); }
 void KeyList::dropEvent(QDropEvent* event) {
   auto* dialog = new QDialog();
 
-  dialog->setWindowTitle(tr("Import Keys"));
+  dialog->setWindowTitle(_("Import Keys"));
   QLabel* label;
-  label = new QLabel(tr("You've dropped something on the table.\n GpgFrontend "
-                        "will now try to import key(s).") +
-                     "\n");
+  label =
+      new QLabel(QString(_("You've dropped something on the table.")) + "\n " +
+                 _("GpgFrontend "
+                   "will now try to import key(s).") +
+                 "\n");
 
   // "always import keys"-CheckBox
-  auto* checkBox = new QCheckBox(tr("Always import without bothering."));
+  auto* checkBox = new QCheckBox(_("Always import without bothering."));
   if (settings.value("general/confirmImportKeys").toBool())
     checkBox->setCheckState(Qt::Unchecked);
 
@@ -343,7 +344,8 @@ void KeyList::dropEvent(QDropEvent* event) {
       QFile file;
       file.setFileName(tmp.toLocalFile());
       if (!file.open(QIODevice::ReadOnly)) {
-        qDebug() << tr("Couldn't Open File: ") + tmp.toString();
+        LOG(INFO) << _("Couldn't Open File") << ":"
+                  << tmp.toString().toStdString();
       }
       QByteArray inBuffer = file.readAll();
       this->importKeys(inBuffer);
diff --git a/src/ui/widgets/KeyList.h b/src/ui/widgets/KeyList.h
index c1c49c5c..524b2bd0 100644
--- a/src/ui/widgets/KeyList.h
+++ b/src/ui/widgets/KeyList.h
@@ -1,7 +1,7 @@
 /**
- * This file is part of GPGFrontend.
+ * This file is part of GpgFrontend.
  *
- * GPGFrontend is free software: you can redistribute it and/or modify
+ * 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.
diff --git a/src/ui/widgets/SignersPicker.cpp b/src/ui/widgets/SignersPicker.cpp
index 3c720b10..3131989b 100644
--- a/src/ui/widgets/SignersPicker.cpp
+++ b/src/ui/widgets/SignersPicker.cpp
@@ -1,7 +1,7 @@
 /**
- * This file is part of GPGFrontend.
+ * This file is part of GpgFrontend.
  *
- * GPGFrontend is free software: you can redistribute it and/or modify
+ * 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.
@@ -27,7 +27,7 @@
 namespace GpgFrontend::UI {
 
 SignersPicker::SignersPicker(QWidget* parent) : QDialog(parent) {
-  auto confirmButton = new QPushButton(tr("Confirm"));
+  auto confirmButton = new QPushButton(_("Confirm"));
   connect(confirmButton, SIGNAL(clicked(bool)), this, SLOT(accept()));
 
   /*Setup KeyList*/
diff --git a/src/ui/widgets/SignersPicker.h b/src/ui/widgets/SignersPicker.h
index 278e0142..055b6ef6 100644
--- a/src/ui/widgets/SignersPicker.h
+++ b/src/ui/widgets/SignersPicker.h
@@ -1,7 +1,7 @@
 /**
- * This file is part of GPGFrontend.
+ * This file is part of GpgFrontend.
  *
- * GPGFrontend is free software: you can redistribute it and/or modify
+ * 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.
diff --git a/src/ui/widgets/TextEdit.cpp b/src/ui/widgets/TextEdit.cpp
index aaac98ee..efc2abbf 100644
--- a/src/ui/widgets/TextEdit.cpp
+++ b/src/ui/widgets/TextEdit.cpp
@@ -1,7 +1,7 @@
 /**
- * This file is part of GPGFrontend.
+ * This file is part of GpgFrontend.
  *
- * GPGFrontend is free software: you can redistribute it and/or modify
+ * 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.
@@ -24,6 +24,8 @@
 
 #include "ui/widgets/TextEdit.h"
 
+#include <boost/format.hpp>
+
 namespace GpgFrontend::UI {
 
 TextEdit::TextEdit(QWidget* parent) : QWidget(parent) {
@@ -46,7 +48,7 @@ TextEdit::TextEdit(QWidget* parent) : QWidget(parent) {
 }
 
 void TextEdit::slotNewTab() {
-  QString header = tr("untitled") + QString::number(++countPage) + ".txt";
+  QString header = _("untitled") + QString::number(++countPage) + ".txt";
 
   auto* page = new EditorPage();
   tabWidget->addTab(page, header);
@@ -83,9 +85,11 @@ void TextEdit::slotOpenFile(QString& path) {
     page->getTextPage()->setFocus();
     page->readFile();
   } else {
-    QMessageBox::warning(
-        this, tr("Warning"),
-        tr("Cannot read file %1:\n%2.").arg(path).arg(file.errorString()));
+    QMessageBox::warning(this, _("Warning"),
+                         (boost::format(_("Cannot read file %1%:\n%2%.")) %
+                          path.toStdString() % file.errorString().toStdString())
+                             .str()
+                             .c_str());
   }
 
   file.close();
@@ -93,7 +97,7 @@ void TextEdit::slotOpenFile(QString& path) {
 
 void TextEdit::slotOpen() {
   QStringList fileNames =
-      QFileDialog::getOpenFileNames(this, tr("Open file"), QDir::currentPath());
+      QFileDialog::getOpenFileNames(this, _("Open file"), QDir::currentPath());
   for (const auto& fileName : fileNames) {
     if (!fileName.isEmpty()) {
       QFile file(fileName);
@@ -118,10 +122,12 @@ void TextEdit::slotOpen() {
         // enableAction(true)
         file.close();
       } else {
-        QMessageBox::warning(this, tr("Warning"),
-                             tr("Cannot read file %1:\n%2.")
-                                 .arg(fileName)
-                                 .arg(file.errorString()));
+        QMessageBox::warning(
+            this, _("Warning"),
+            (boost::format(_("Cannot read file %1%:\n%2%.")) %
+             fileName.toStdString() % file.errorString().toStdString())
+                .str()
+                .c_str());
       }
     }
   }
@@ -164,13 +170,16 @@ bool TextEdit::saveFile(const QString& fileName) {
     int curIndex = tabWidget->currentIndex();
     tabWidget->setTabText(curIndex, strippedName(fileName));
     page->setFilePath(fileName);
-    //      statusBar()->showMessage(tr("File saved"), 2000);
+    //      statusBar()->showMessage(_("File saved"), 2000);
     file.close();
     return true;
   } else {
     QMessageBox::warning(
-        this, tr("File"),
-        tr("Cannot write file %1:\n%2.").arg(fileName).arg(file.errorString()));
+        this, _("Warning"),
+        (boost::format(_("Cannot read file %1%:\n%2%.")) %
+         fileName.toStdString() % file.errorString().toStdString())
+            .str()
+            .c_str());
     return false;
   }
 }
@@ -182,13 +191,13 @@ bool TextEdit::slotSaveAs() {
 
   EditorPage* page = slotCurPageTextEdit();
   QString path;
-  if (page->getFilePath() != "") {
+  if (!page->getFilePath().isEmpty()) {
     path = page->getFilePath();
   } else {
     path = tabWidget->tabText(tabWidget->currentIndex()).remove(0, 2);
   }
 
-  QString fileName = QFileDialog::getSaveFileName(this, tr("Save file"), path);
+  QString fileName = QFileDialog::getSaveFileName(this, _("Save file"), path);
   return saveFile(fileName);
 }
 
@@ -250,16 +259,18 @@ bool TextEdit::maybeSaveCurrentTab(bool askToSave) {
     const QString& filePath = page->getFilePath();
     if (askToSave) {
       result = QMessageBox::warning(
-          this, tr("Unsaved document"),
-          tr("The document \"%1\" has been modified. Do you want to "
-             "save your changes?<br/>")
+          this, _("Unsaved document"),
+          QString(_("The document \"%1\" has been modified. Do you want to "
+                    "save your changes?"))
                   .arg(docname) +
-              tr("<b>Note:</b> If you don't save these files, all changes are "
-                 "lost.<br/>"),
+              "<br/><b>" + _("Note:") + "</b>" +
+              _("If you don't save these files, all changes are "
+                "lost.") +
+              "<br/>",
           QMessageBox::Save | QMessageBox::Discard | QMessageBox::Cancel);
     }
     if ((result == QMessageBox::Save) || (!askToSave)) {
-      if (filePath == "") {
+      if (filePath.isEmpty()) {
         // QString docname = tabWidget->tabText(tabWidget->currentIndex());
         // docname.remove(0,2);
         return slotSaveAs();
@@ -398,8 +409,11 @@ void TextEdit::loadFile(const QString& fileName) {
   QFile file(fileName);
   if (!file.open(QFile::ReadOnly | QFile::Text)) {
     QMessageBox::warning(
-        this, tr("Application"),
-        tr("Cannot read file %1:\n%2.").arg(fileName).arg(file.errorString()));
+        this, _("Warning"),
+        (boost::format(_("Cannot read file %1%:\n%2%.")) %
+         fileName.toStdString() % file.errorString().toStdString())
+            .str()
+            .c_str());
     return;
   }
   QTextStream in(&file);
@@ -409,7 +423,7 @@ void TextEdit::loadFile(const QString& fileName) {
   slotCurPageTextEdit()->setFilePath(fileName);
   tabWidget->setTabText(tabWidget->currentIndex(), strippedName(fileName));
   file.close();
-  // statusBar()->showMessage(tr("File loaded"), 2000);
+  // statusBar()->showMessage(_("File loaded"), 2000);
 }
 
 QString TextEdit::strippedName(const QString& fullFileName) {
@@ -434,7 +448,7 @@ void TextEdit::slotPrint() {
   }
   document->print(&printer);
 
-  // statusBar()->showMessage(tr("Ready"), 2000);
+  // statusBar()->showMessage(_("Ready"), 2000);
 #endif
 }
 
diff --git a/src/ui/widgets/TextEdit.h b/src/ui/widgets/TextEdit.h
index beebc8c4..3cff74e7 100644
--- a/src/ui/widgets/TextEdit.h
+++ b/src/ui/widgets/TextEdit.h
@@ -1,7 +1,7 @@
 /**
- * This file is part of GPGFrontend.
+ * This file is part of GpgFrontend.
  *
- * GPGFrontend is free software: you can redistribute it and/or modify
+ * 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.
diff --git a/src/ui/widgets/VerifyKeyDetailBox.cpp b/src/ui/widgets/VerifyKeyDetailBox.cpp
index 97f792b1..7c25d593 100644
--- a/src/ui/widgets/VerifyKeyDetailBox.cpp
+++ b/src/ui/widgets/VerifyKeyDetailBox.cpp
@@ -1,7 +1,7 @@
 /**
- * This file is part of GPGFrontend.
+ * This file is part of GpgFrontend.
  *
- * GPGFrontend is free software: you can redistribute it and/or modify
+ * 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.
@@ -36,17 +36,17 @@ VerifyKeyDetailBox::VerifyKeyDetailBox(QWidget* parent, KeyList* keyList,
   switch (gpg_err_code(signature->status)) {
     case GPG_ERR_NO_PUBKEY: {
       this->setTitle("A Error Signature");
-      auto* importButton = new QPushButton(tr("Import from keyserver"));
+      auto* importButton = new QPushButton(_("Import from keyserver"));
       connect(importButton, SIGNAL(clicked()), this,
               SLOT(slotImportFormKeyserver()));
 
-      this->setTitle(tr("Key not present with id 0x") + signature->fpr);
+      this->setTitle(QString(_("Key not present with id 0x")) + signature->fpr);
 
       auto grid = new QGridLayout();
 
-      grid->addWidget(new QLabel(tr("Status:")), 0, 0);
-      // grid->addWidget(new QLabel(tr("Fingerprint:")), 1, 0);
-      grid->addWidget(new QLabel(tr("Key not present in keylist")), 0, 1);
+      grid->addWidget(new QLabel(QString(_("Status")) + _(":")), 0, 0);
+      // grid->addWidget(new QLabel(_("Fingerprint:")), 1, 0);
+      grid->addWidget(new QLabel(_("Key not present in key list")), 0, 1);
       // grid->addWidget(new QLabel(signature->fpr), 1, 1);
       grid->addWidget(importButton, 2, 0, 2, 1);
 
@@ -54,91 +54,96 @@ VerifyKeyDetailBox::VerifyKeyDetailBox(QWidget* parent, KeyList* keyList,
       break;
     }
     case GPG_ERR_NO_ERROR: {
-      this->setTitle("A Signature:");
+      this->setTitle(QString(_("A Signature")) + ":");
       auto gird = createKeyInfoGrid(signature);
       if (gird != nullptr) {
         vbox->addLayout(gird);
       } else {
-        vbox->addWidget(new QLabel(tr("Key Information is NOT Available")));
+        vbox->addWidget(new QLabel(_("Key Information is NOT Available")));
         if (signature->fpr != nullptr) {
-          vbox->addWidget(
-              new QLabel(tr("Fingerprint: ") + QString(signature->fpr)));
+          vbox->addWidget(new QLabel(QString(_("Fingerprint")) + ": " +
+                                     QString(signature->fpr)));
         }
       }
       break;
     }
     case GPG_ERR_CERT_REVOKED: {
       this->setTitle("An Error Signature");
-      vbox->addWidget(new QLabel(tr("Status: Cert Revoked")));
+      vbox->addWidget(
+          new QLabel(QString(_("Status")) + ":" + _("Cert Revoked")));
       auto gird = createKeyInfoGrid(signature);
       if (gird != nullptr) {
         vbox->addLayout(gird);
       } else {
-        vbox->addWidget(new QLabel(tr("Key Information is NOT Available")));
+        vbox->addWidget(new QLabel(_("Key Information is NOT Available")));
         if (signature->fpr != nullptr) {
-          vbox->addWidget(
-              new QLabel(tr("Fingerprint: ") + QString(signature->fpr)));
+          vbox->addWidget(new QLabel(QString(_("Fingerprint")) + ": " +
+                                     QString(signature->fpr)));
         }
       }
       break;
     }
     case GPG_ERR_SIG_EXPIRED: {
       this->setTitle("An Error Signature");
-      vbox->addWidget(new QLabel(tr("Status: Signature Expired")));
+      vbox->addWidget(
+          new QLabel(QString(_("Status")) + ":" + _("Signature Expired")));
       auto gird = createKeyInfoGrid(signature);
       if (gird != nullptr) {
         vbox->addLayout(gird);
       } else {
-        vbox->addWidget(new QLabel(tr("Key Information is NOT Available")));
+        vbox->addWidget(new QLabel(_("Key Information is NOT Available")));
         if (signature->fpr != nullptr) {
-          vbox->addWidget(
-              new QLabel(tr("Fingerprint: ") + QString(signature->fpr)));
+          vbox->addWidget(new QLabel(QString(_("Fingerprint")) + ": " +
+                                     QString(signature->fpr)));
         }
       }
       break;
     }
     case GPG_ERR_KEY_EXPIRED: {
       this->setTitle("An Error Signature");
-      vbox->addWidget(new QLabel(tr("Status: Signature Expired")));
-      vbox->addWidget(new QLabel(tr("Status: Key Expired")));
+      vbox->addWidget(
+          new QLabel(QString(_("Status")) + ":" + _("Key Expired")));
+      vbox->addWidget(
+          new QLabel(QString(_("Status")) + ":" + _("Key Expired")));
       auto gird = createKeyInfoGrid(signature);
       if (gird != nullptr) {
         vbox->addLayout(gird);
       } else {
-        vbox->addWidget(new QLabel(tr("Key Information is NOT Available")));
+        vbox->addWidget(new QLabel(_("Key Information is NOT Available")));
         if (signature->fpr != nullptr) {
-          vbox->addWidget(
-              new QLabel(tr("Fingerprint: ") + QString(signature->fpr)));
+          vbox->addWidget(new QLabel(QString(_("Fingerprint")) + ": " +
+                                     QString(signature->fpr)));
         }
       }
       break;
     }
     case GPG_ERR_GENERAL: {
       this->setTitle("An Error Signature");
-      vbox->addWidget(new QLabel(tr("Status: General Error")));
+      vbox->addWidget(
+          new QLabel(QString(_("Status")) + ":" + _("General Error")));
       auto gird = createKeyInfoGrid(signature);
       if (gird != nullptr) {
         vbox->addLayout(gird);
       } else {
-        vbox->addWidget(new QLabel(tr("Key Information is NOT Available")));
+        vbox->addWidget(new QLabel(_("Key Information is NOT Available")));
         if (signature->fpr != nullptr) {
-          vbox->addWidget(
-              new QLabel(tr("Fingerprint: ") + QString(signature->fpr)));
+          vbox->addWidget(new QLabel(QString(_("Fingerprint")) + ": " +
+                                     QString(signature->fpr)));
         }
       }
       break;
     }
     default: {
       this->setTitle("An Error Signature");
-      this->setTitle(tr("Status: Unknown Error"));
+      this->setTitle(QString(_("Status")) + ":" + _("Unknown Error "));
       auto gird = createKeyInfoGrid(signature);
       if (gird != nullptr) {
         vbox->addLayout(gird);
       } else {
-        vbox->addWidget(new QLabel(tr("Key Information is NOT Available")));
+        vbox->addWidget(new QLabel(_("Key Information is NOT Available")));
         if (signature->fpr != nullptr) {
-          vbox->addWidget(
-              new QLabel(tr("Fingerprint: ") + QString(signature->fpr)));
+          vbox->addWidget(new QLabel(QString(_("Fingerprint")) + ": " +
+                                     QString(signature->fpr)));
         }
       }
       break;
@@ -168,48 +173,48 @@ QGridLayout* VerifyKeyDetailBox::createKeyInfoGrid(
   GpgKey key = GpgKeyGetter::GetInstance().GetKey(signature->fpr);
 
   if (!key.good()) return nullptr;
-  grid->addWidget(new QLabel(tr("Signer Name:")), 0, 0);
-  grid->addWidget(new QLabel(tr("Signer Email:")), 1, 0);
-  grid->addWidget(new QLabel(tr("Key's Fingerprint:")), 2, 0);
-  grid->addWidget(new QLabel(tr("Valid:")), 3, 0);
-  grid->addWidget(new QLabel(tr("Flags:")), 4, 0);
+  grid->addWidget(new QLabel(QString(_("Signer Name")) + ":"), 0, 0);
+  grid->addWidget(new QLabel(QString(_("Signer Email")) + ":"), 1, 0);
+  grid->addWidget(new QLabel(QString(_("Key's Fingerprint")) + ":"), 2, 0);
+  grid->addWidget(new QLabel(QString(_("Valid")) + ":"), 3, 0);
+  grid->addWidget(new QLabel(QString(_("Flags")) + ":"), 4, 0);
 
   grid->addWidget(new QLabel(QString::fromStdString(key.name())), 0, 1);
   grid->addWidget(new QLabel(QString::fromStdString(key.email())), 1, 1);
   grid->addWidget(new QLabel(beautifyFingerprint(signature->fpr)), 2, 1);
 
   if (signature->summary & GPGME_SIGSUM_VALID) {
-    grid->addWidget(new QLabel(tr("Fully Valid")), 3, 1);
+    grid->addWidget(new QLabel(_("Fully Valid")), 3, 1);
   } else {
-    grid->addWidget(new QLabel(tr("NOT Fully Valid")), 3, 1);
+    grid->addWidget(new QLabel(_("NOT Fully Valid")), 3, 1);
   }
 
   QString flags;
   QTextStream textStream(&flags);
 
   if (signature->summary & GPGME_SIGSUM_GREEN) {
-    textStream << tr("Good ");
+    textStream << _("Good") << " ";
   }
   if (signature->summary & GPGME_SIGSUM_RED) {
-    textStream << tr("Bad ");
+    textStream << _("Bad") << " ";
   }
   if (signature->summary & GPGME_SIGSUM_SIG_EXPIRED) {
-    textStream << tr("Expired ");
+    textStream << _("Expired") << " ";
   }
   if (signature->summary & GPGME_SIGSUM_KEY_MISSING) {
-    textStream << tr("Missing Key ");
+    textStream << _("Missing Key") << " ";
   }
   if (signature->summary & GPGME_SIGSUM_KEY_REVOKED) {
-    textStream << tr("Revoked Key ");
+    textStream << _("Revoked Key") << " ";
   }
   if (signature->summary & GPGME_SIGSUM_KEY_EXPIRED) {
-    textStream << tr("Expired Key ");
+    textStream << _("Expired Key") << " ";
   }
   if (signature->summary & GPGME_SIGSUM_CRL_MISSING) {
-    textStream << tr("Missing CRL ");
+    textStream << _("Missing CRL") << " ";
   }
 
-  grid->addWidget(new QLabel(tr(flags.toUtf8().constData())), 4, 1);
+  grid->addWidget(new QLabel(_(flags.toUtf8().constData())), 4, 1);
   return grid;
 }
 
diff --git a/src/ui/widgets/VerifyKeyDetailBox.h b/src/ui/widgets/VerifyKeyDetailBox.h
index 7a6ded4e..c1b26bb2 100644
--- a/src/ui/widgets/VerifyKeyDetailBox.h
+++ b/src/ui/widgets/VerifyKeyDetailBox.h
@@ -1,7 +1,7 @@
 /**
- * This file is part of GPGFrontend.
+ * This file is part of GpgFrontend.
  *
- * GPGFrontend is free software: you can redistribute it and/or modify
+ * 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.
@@ -33,8 +33,7 @@ namespace GpgFrontend::UI {
 class VerifyKeyDetailBox : public QGroupBox {
   Q_OBJECT
  public:
-  explicit VerifyKeyDetailBox(QWidget* parent,
-                              KeyList* mKeyList,
+  explicit VerifyKeyDetailBox(QWidget* parent, KeyList* mKeyList,
                               gpgme_signature_t signature);
 
  private slots: