Restructures the project source and cleans up a bit

15 files changed, 3242 insertions, 0 deletions

diff --git a/src/dialogs/certificateiodialog.cpp b/src/dialogs/certificateiodialog.cpp
new file mode 100644
index 0000000..8c9fcd5
--- /dev/null
+++ b/src/dialogs/certificateiodialog.cpp
@@ -0,0 +1,126 @@
+#include "certificateiodialog.hpp"
+#include "ui_certificateiodialog.h"
+
+#include <QFileDialog>
+#include <QPushButton>
+#include <QSsl>
+
+CertificateIoDialog::CertificateIoDialog(QWidget *parent) :
+    QDialog(parent),
+    ui(new Ui::CertificateIoDialog)
+{
+    ui->setupUi(this);
+
+    this->ui->key_type->clear();
+    this->ui->key_type->addItem("RSA", QVariant::fromValue<int>(QSsl::Rsa));
+    this->ui->key_type->addItem("ECDSA", QVariant::fromValue<int>(QSsl::Ec));
+
+    this->updateUI();
+}
+
+CertificateIoDialog::~CertificateIoDialog()
+{
+    delete ui;
+}
+
+void CertificateIoDialog::setIoMode(CertificateIoDialog::IoMode mode)
+{
+    this->current_mode = mode;
+    if(mode == Export) {
+        this->setWindowTitle(tr("Export Certificate"));
+    } else {
+        this->setWindowTitle(tr("Import Certificate"));
+    }
+    this->ui->key_type->setEnabled(mode == Import);
+    this->updateUI();
+}
+
+QSsl::KeyAlgorithm CertificateIoDialog::keyAlgorithm() const
+{
+    return QSsl::KeyAlgorithm(this->ui->key_type->currentData().toInt());
+}
+
+void CertificateIoDialog::setKeyAlgorithm(QSsl::KeyAlgorithm alg)
+{
+    this->ui->key_type->setCurrentIndex(-1);
+    for(int i = 0; i< this->ui->key_type->count(); i++) {
+        if(this->ui->key_type->itemData(i).toInt() == int(alg)) {
+            this->ui->key_type->setCurrentIndex(i);
+            break;
+        }
+    }
+}
+
+QString CertificateIoDialog::keyFileName() const
+{
+    return this->ui->key_file_name->text();
+}
+
+QString CertificateIoDialog::certificateFileName() const
+{
+    return this->ui->certificate_file_name->text();
+}
+
+void CertificateIoDialog::on_select_certificate_file_button_clicked()
+{
+    QFileDialog dialog { this };
+
+    dialog.setNameFilter("Certificate File(*.pem *.der)");
+    dialog.setAcceptMode((this->current_mode == Export) ? QFileDialog::AcceptSave : QFileDialog::AcceptOpen);
+    dialog.selectFile(this->ui->certificate_file_name->text());
+
+    if(dialog.exec() != QDialog::Accepted)
+        return;
+
+    this->ui->certificate_file_name->setText(dialog.selectedFiles().first());
+
+    this->updateUI();
+}
+
+void CertificateIoDialog::on_select_key_file_button_clicked()
+{
+    QFileDialog dialog { this };
+
+    dialog.setNameFilter("Certificate File(*.pem *.der)");
+    dialog.setAcceptMode((this->current_mode == Export) ? QFileDialog::AcceptSave : QFileDialog::AcceptOpen);
+    dialog.selectFile(this->ui->key_file_name->text());
+
+    if(dialog.exec() != QDialog::Accepted)
+        return;
+
+    this->ui->key_file_name->setText(dialog.selectedFiles().first());
+
+    this->updateUI();
+}
+
+void CertificateIoDialog::on_certificate_file_name_textChanged(const QString &arg1)
+{
+    Q_UNUSED(arg1)
+    this->updateUI();
+}
+
+void CertificateIoDialog::on_key_file_name_textChanged(const QString &arg1)
+{
+    Q_UNUSED(arg1)
+    this->updateUI();
+}
+
+void CertificateIoDialog::updateUI()
+{
+    QString cert_file_name = certificateFileName();
+    QString key_file_name = keyFileName();
+
+    bool ok = true;
+
+    ok &= (cert_file_name.endsWith(".pem") or cert_file_name.endsWith(".der"));
+    ok &= (key_file_name.endsWith(".pem") or key_file_name.endsWith(".der"));
+
+    ok &= (this->ui->key_type->currentIndex() >= 0);
+
+    if(current_mode == Import) {
+       ok &= QFile(cert_file_name).exists();
+       ok &= QFile(key_file_name).exists();
+    }
+
+    this->ui->buttonBox->button(QDialogButtonBox::Ok)->setEnabled(ok);
+}
diff --git a/src/dialogs/certificateiodialog.hpp b/src/dialogs/certificateiodialog.hpp
new file mode 100644
index 0000000..590b282
--- /dev/null
+++ b/src/dialogs/certificateiodialog.hpp
@@ -0,0 +1,50 @@
+#ifndef CERTIFICATEIODIALOG_HPP
+#define CERTIFICATEIODIALOG_HPP
+
+#include <QDialog>
+#include <QSsl>
+
+namespace Ui {
+class CertificateIoDialog;
+}
+
+class CertificateIoDialog : public QDialog
+{
+    Q_OBJECT
+public:
+    enum IoMode {
+        Import,
+        Export
+    };
+public:
+    explicit CertificateIoDialog(QWidget *parent = nullptr);
+    ~CertificateIoDialog();
+
+    IoMode mode() const { return this->current_mode; }
+    void setIoMode(IoMode mode);
+
+    QSsl::KeyAlgorithm keyAlgorithm() const;
+    void setKeyAlgorithm(QSsl::KeyAlgorithm alg);
+
+    QString keyFileName() const;
+    QString certificateFileName() const;
+
+private slots:
+    void on_select_certificate_file_button_clicked();
+
+    void on_select_key_file_button_clicked();
+
+    void on_certificate_file_name_textChanged(const QString &arg1);
+
+    void on_key_file_name_textChanged(const QString &arg1);
+
+private:
+    void updateUI();
+
+private:
+    Ui::CertificateIoDialog *ui;
+
+    IoMode current_mode;
+};
+
+#endif // CERTIFICATEIODIALOG_HPP
diff --git a/src/dialogs/certificateiodialog.ui b/src/dialogs/certificateiodialog.ui
new file mode 100644
index 0000000..074df28
--- /dev/null
+++ b/src/dialogs/certificateiodialog.ui
@@ -0,0 +1,127 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>CertificateIoDialog</class>
+ <widget class="QDialog" name="CertificateIoDialog">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>411</width>
+    <height>160</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Dialog</string>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout">
+   <item>
+    <layout class="QFormLayout" name="formLayout">
+     <item row="0" column="0">
+      <widget class="QLabel" name="label_3">
+       <property name="text">
+        <string>Key Type</string>
+       </property>
+      </widget>
+     </item>
+     <item row="0" column="1">
+      <widget class="QComboBox" name="key_type">
+       <property name="enabled">
+        <bool>false</bool>
+       </property>
+       <property name="editable">
+        <bool>false</bool>
+       </property>
+      </widget>
+     </item>
+     <item row="1" column="0">
+      <widget class="QLabel" name="label_2">
+       <property name="text">
+        <string>Key File</string>
+       </property>
+      </widget>
+     </item>
+     <item row="1" column="1">
+      <layout class="QHBoxLayout" name="horizontalLayout">
+       <item>
+        <widget class="QLineEdit" name="key_file_name"/>
+       </item>
+       <item>
+        <widget class="QToolButton" name="select_key_file_button">
+         <property name="text">
+          <string>...</string>
+         </property>
+        </widget>
+       </item>
+      </layout>
+     </item>
+     <item row="2" column="0">
+      <widget class="QLabel" name="label">
+       <property name="text">
+        <string>Certificate File</string>
+       </property>
+      </widget>
+     </item>
+     <item row="2" column="1">
+      <layout class="QHBoxLayout" name="horizontalLayout_2">
+       <item>
+        <widget class="QLineEdit" name="certificate_file_name"/>
+       </item>
+       <item>
+        <widget class="QToolButton" name="select_certificate_file_button">
+         <property name="text">
+          <string>...</string>
+         </property>
+        </widget>
+       </item>
+      </layout>
+     </item>
+    </layout>
+   </item>
+   <item>
+    <widget class="QDialogButtonBox" name="buttonBox">
+     <property name="orientation">
+      <enum>Qt::Horizontal</enum>
+     </property>
+     <property name="standardButtons">
+      <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>accepted()</signal>
+   <receiver>CertificateIoDialog</receiver>
+   <slot>accept()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>248</x>
+     <y>254</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>157</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>rejected()</signal>
+   <receiver>CertificateIoDialog</receiver>
+   <slot>reject()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>316</x>
+     <y>260</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>286</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
+</ui>
diff --git a/src/dialogs/certificatemanagementdialog.cpp b/src/dialogs/certificatemanagementdialog.cpp
new file mode 100644
index 0000000..5141b30
--- /dev/null
+++ b/src/dialogs/certificatemanagementdialog.cpp
@@ -0,0 +1,308 @@
+#include "certificatemanagementdialog.hpp"
+#include "ui_certificatemanagementdialog.h"
+
+#include "kristall.hpp"
+
+#include "newidentitiydialog.hpp"
+#include "certificateiodialog.hpp"
+#include "ioutil.hpp"
+
+#include <QCryptographicHash>
+#include <QMessageBox>
+
+CertificateManagementDialog::CertificateManagementDialog(QWidget *parent) :
+    QDialog(parent),
+    ui(new Ui::CertificateManagementDialog),
+    selected_identity { nullptr }
+{
+    ui->setupUi(this);
+
+    this->ui->certificates->setModel(&global_identities);
+    this->ui->certificates->expandAll();
+
+    connect(
+        this->ui->certificates->selectionModel(),
+        &QItemSelectionModel::currentChanged,
+        this,
+        &CertificateManagementDialog::on_certificates_selected
+    );
+    on_certificates_selected(QModelIndex { }, QModelIndex { });
+}
+
+CertificateManagementDialog::~CertificateManagementDialog()
+{
+    delete ui;
+}
+
+void CertificateManagementDialog::on_certificates_selected(QModelIndex const& index, QModelIndex const & previous)
+{
+    Q_UNUSED(previous);
+
+    selected_identity = global_identities.getMutableIdentity(index);
+
+    this->ui->export_cert_button->setEnabled(selected_identity != nullptr);
+
+    if(selected_identity != nullptr)
+    {
+        auto & cert = *selected_identity;
+        this->ui->groupBox->setEnabled(true);
+        this->ui->cert_display_name->setText(cert.display_name);
+        this->ui->cert_common_name->setText(cert.certificate.subjectInfo(QSslCertificate::CommonName).join(", "));
+        this->ui->cert_expiration_date->setDateTime(cert.certificate.expiryDate());
+        this->ui->cert_livetime->setText(QString("%1 days").arg(QDateTime::currentDateTime().daysTo(cert.certificate.expiryDate())));
+        this->ui->cert_fingerprint->setPlainText(toFingerprintString(cert.certificate));
+        this->ui->cert_notes->setPlainText(cert.user_notes);
+
+        this->ui->cert_host_filter->setText(cert.host_filter);
+        this->ui->cert_auto_enable->setEnabled(not cert.host_filter.isEmpty());
+        this->ui->cert_auto_enable->setChecked(cert.auto_enable);
+
+        this->ui->delete_cert_button->setEnabled(true);
+    }
+    else
+    {
+        this->ui->groupBox->setEnabled(false);
+        this->ui->cert_display_name->setText("");
+        this->ui->cert_common_name->setText("");
+        this->ui->cert_expiration_date->setDateTime(QDateTime { });
+        this->ui->cert_livetime->setText("");
+        this->ui->cert_fingerprint->setPlainText("");
+        this->ui->cert_host_filter->setText("");
+        this->ui->cert_auto_enable->setChecked(false);
+
+        if(auto group_name = global_identities.group(index); not group_name.isEmpty()) {
+            this->ui->delete_cert_button->setEnabled(global_identities.canDeleteGroup(group_name));
+        } else {
+            this->ui->delete_cert_button->setEnabled(false);
+        }
+    }
+}
+
+void CertificateManagementDialog::on_cert_notes_textChanged()
+{
+    if(this->selected_identity != nullptr) {
+        this->selected_identity->user_notes = this->ui->cert_notes->toPlainText();
+    }
+}
+
+void CertificateManagementDialog::on_cert_display_name_textChanged(const QString &arg1)
+{
+    Q_UNUSED(arg1)
+    if(this->selected_identity != nullptr) {
+        this->selected_identity->display_name = this->ui->cert_display_name->text();
+    }
+}
+
+void CertificateManagementDialog::on_delete_cert_button_clicked()
+{
+    auto index = this->ui->certificates->currentIndex();
+
+    if(global_identities.getMutableIdentity(index) != nullptr)
+    {
+        auto answer = QMessageBox::question(
+            this,
+            "Kristall",
+            "Do you really want to delete this certificate?\r\n\r\nYou will not be able to restore the identity after this!",
+            QMessageBox::Yes | QMessageBox::No,
+            QMessageBox::No
+        );
+        if(answer != QMessageBox::Yes)
+            return;
+        if(not global_identities.destroyIdentity(index)) {
+            QMessageBox::warning(this, "Kristall", "Could not destroy identity!");
+        }
+    }
+    else if(auto group_name = global_identities.group(index); not group_name.isEmpty()) {
+
+        auto answer = QMessageBox::question(
+            this,
+            "Kristall",
+            QString("Do you want to delete the group '%1'").arg(group_name)
+        );
+        if(answer != QMessageBox::Yes)
+            return;
+
+        if(not global_identities.deleteGroup(group_name)) {
+            QMessageBox::warning(this, "Kristall", "Could not delete group!");
+        }
+    }
+}
+
+void CertificateManagementDialog::on_export_cert_button_clicked()
+{
+    if(this->selected_identity == nullptr)
+        return;
+    CertificateIoDialog dialog { this };
+
+    dialog.setKeyAlgorithm(this->selected_identity->private_key.algorithm());
+    dialog.setIoMode(CertificateIoDialog::Export);
+
+    if(dialog.exec() != QDialog::Accepted)
+        return;
+
+    {
+        QFile cert_file { dialog.certificateFileName() };
+        if(not cert_file.open(QFile::WriteOnly)) {
+            QMessageBox::warning(
+                this,
+                "Kristall",
+                tr("The file %1 could not be found!").arg(dialog.certificateFileName())
+            );
+            return;
+        }
+
+        QByteArray cert_blob;
+        if(dialog.certificateFileName().endsWith(".der")) {
+            cert_blob = this->selected_identity->certificate.toDer();
+        } else {
+            cert_blob = this->selected_identity->certificate.toPem();
+        }
+
+        if(not IoUtil::writeAll(cert_file, cert_blob)) {
+            QMessageBox::warning(
+                this,
+                "Kristall",
+                tr("The file %1 could not be created found!").arg(dialog.certificateFileName())
+            );
+            return;
+        }
+    }
+
+    {
+        QFile key_file { dialog.keyFileName() };
+        if(not key_file.open(QFile::WriteOnly)) {
+            QMessageBox::warning(
+                this,
+                "Kristall",
+                tr("The file %1 could not be found!").arg(dialog.keyFileName())
+            );
+            return;
+        }
+
+        QByteArray key_blob;
+        if(dialog.keyFileName().endsWith(".der")) {
+            key_blob = this->selected_identity->private_key.toDer();
+        } else {
+            key_blob = this->selected_identity->private_key.toPem();
+        }
+
+        if(not IoUtil::writeAll(key_file, key_blob)) {
+            QMessageBox::warning(
+                this,
+                "Kristall",
+                tr("The file %1 could not be created found!").arg(dialog.keyFileName())
+            );
+            return;
+        }
+    }
+}
+
+void CertificateManagementDialog::on_import_cert_button_clicked()
+{
+    CertificateIoDialog dialog { this };
+
+    dialog.setIoMode(CertificateIoDialog::Import);
+
+    if(dialog.exec() != QDialog::Accepted)
+        return;
+
+    QFile cert_file { dialog.certificateFileName() };
+    if(not cert_file.open(QFile::ReadOnly)) {
+        QMessageBox::warning(
+            this,
+            "Kristall",
+            tr("The file %1 could not be found!").arg(dialog.certificateFileName())
+        );
+        return;
+    }
+
+    QFile key_file { dialog.keyFileName() };
+    if(not key_file.open(QFile::ReadOnly)) {
+        QMessageBox::warning(
+            this,
+            "Kristall",
+            tr("The file %1 could not be found!").arg(dialog.keyFileName())
+        );
+        return;
+    }
+
+    CryptoIdentity ident;
+    ident.private_key = QSslKey {
+        &key_file,
+        dialog.keyAlgorithm(),
+        dialog.keyFileName().endsWith(".der") ? QSsl::Der : QSsl::Pem,
+        QSsl::PrivateKey
+    };
+    ident.certificate = QSslCertificate {
+        &cert_file,
+        dialog.keyFileName().endsWith(".der") ? QSsl::Der : QSsl::Pem,
+    };
+    ident.user_notes = tr("Imported from:\r\nkey: %1\r\n:cert: %2").arg(dialog.keyFileName()).arg(dialog.certificateFileName());
+    ident.display_name = "Imported Certificate";
+    ident.auto_enable = false;
+    ident.host_filter = "";
+    ident.is_persistent = true;
+
+    if(ident.private_key.isNull()) {
+        QMessageBox::warning(
+            this,
+            "Kristall",
+            tr("The key file %1 could not be loaded. Please verify your key file.").arg(dialog.keyFileName())
+        );
+        return;
+    }
+
+    if(ident.certificate.isNull()) {
+        QMessageBox::warning(
+            this,
+            "Kristall",
+            tr("The certificate file %1 could not be loaded. Please verify your certificate.").arg(dialog.keyFileName())
+        );
+        return;
+    }
+
+    if(not global_identities.addCertificate(tr("Imported Certificates"), ident)) {
+        QMessageBox::warning(
+            this,
+            "Kristall",
+            tr("Failed to import the certificate.")
+        );
+    }
+}
+
+void CertificateManagementDialog::on_create_cert_button_clicked()
+{
+    NewIdentitiyDialog dialog { this };
+
+    dialog.setGroupName(global_identities.group(this->ui->certificates->currentIndex()));
+
+    if(dialog.exec() != QDialog::Accepted)
+        return;
+
+    auto id = dialog.createIdentity();
+    if(not id.isValid())
+        return;
+    id.is_persistent = true;
+
+    global_identities.addCertificate(
+        dialog.groupName(),
+        id);
+}
+
+void CertificateManagementDialog::on_cert_host_filter_textChanged(const QString &host_filter)
+{
+    if(this->selected_identity != nullptr) {
+        this->ui->cert_auto_enable->setEnabled(not host_filter.isEmpty());
+        this->selected_identity->host_filter = host_filter;
+    } else {
+        this->ui->cert_auto_enable->setEnabled(false);
+    }
+
+}
+
+void CertificateManagementDialog::on_cert_auto_enable_clicked(bool checked)
+{
+    if(this->selected_identity != nullptr) {
+        this->selected_identity->auto_enable = checked;
+    }
+}
diff --git a/src/dialogs/certificatemanagementdialog.hpp b/src/dialogs/certificatemanagementdialog.hpp
new file mode 100644
index 0000000..0d7178a
--- /dev/null
+++ b/src/dialogs/certificatemanagementdialog.hpp
@@ -0,0 +1,45 @@
+#ifndef CERTIFICATEMANAGEMENTDIALOG_HPP
+#define CERTIFICATEMANAGEMENTDIALOG_HPP
+
+#include <QDialog>
+
+#include "cryptoidentity.hpp"
+
+namespace Ui {
+class CertificateManagementDialog;
+}
+
+class CertificateManagementDialog : public QDialog
+{
+    Q_OBJECT
+
+public:
+    explicit CertificateManagementDialog(QWidget *parent = nullptr);
+    ~CertificateManagementDialog();
+
+private slots:
+    void on_cert_notes_textChanged();
+
+    void on_cert_display_name_textChanged(const QString &arg1);
+
+    void on_delete_cert_button_clicked();
+
+    void on_export_cert_button_clicked();
+
+    void on_import_cert_button_clicked();
+
+    void on_create_cert_button_clicked();
+
+    void on_cert_host_filter_textChanged(const QString &arg1);
+
+    void on_cert_auto_enable_clicked(bool checked);
+
+private:
+    void on_certificates_selected(const QModelIndex &index, QModelIndex const & previous);
+private:
+    Ui::CertificateManagementDialog *ui;
+
+    CryptoIdentity * selected_identity;
+};
+
+#endif // CERTIFICATEMANAGEMENTDIALOG_HPP
diff --git a/src/dialogs/certificatemanagementdialog.ui b/src/dialogs/certificatemanagementdialog.ui
new file mode 100644
index 0000000..82dd788
--- /dev/null
+++ b/src/dialogs/certificatemanagementdialog.ui
@@ -0,0 +1,294 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>CertificateManagementDialog</class>
+ <widget class="QDialog" name="CertificateManagementDialog">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>731</width>
+    <height>480</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Certificate Manager</string>
+  </property>
+  <property name="windowIcon">
+   <iconset theme="certificate"/>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout">
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout">
+     <item>
+      <layout class="QVBoxLayout" name="verticalLayout_3">
+       <property name="rightMargin">
+        <number>0</number>
+       </property>
+       <item>
+        <widget class="QTreeView" name="certificates">
+         <property name="acceptDrops">
+          <bool>true</bool>
+         </property>
+         <property name="dragEnabled">
+          <bool>true</bool>
+         </property>
+         <property name="dragDropMode">
+          <enum>QAbstractItemView::DragDrop</enum>
+         </property>
+         <property name="defaultDropAction">
+          <enum>Qt::MoveAction</enum>
+         </property>
+         <attribute name="headerVisible">
+          <bool>false</bool>
+         </attribute>
+        </widget>
+       </item>
+       <item>
+        <layout class="QHBoxLayout" name="horizontalLayout_2">
+         <item>
+          <widget class="QToolButton" name="create_cert_button">
+           <property name="toolTip">
+            <string>Craete new certificate</string>
+           </property>
+           <property name="text">
+            <string>Create...</string>
+           </property>
+           <property name="icon">
+            <iconset theme="create-new"/>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <widget class="QToolButton" name="import_cert_button">
+           <property name="toolTip">
+            <string>Import certificate</string>
+           </property>
+           <property name="text">
+            <string>Import...</string>
+           </property>
+           <property name="icon">
+            <iconset theme="save-import"/>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <spacer name="horizontalSpacer">
+           <property name="orientation">
+            <enum>Qt::Horizontal</enum>
+           </property>
+           <property name="sizeHint" stdset="0">
+            <size>
+             <width>40</width>
+             <height>20</height>
+            </size>
+           </property>
+          </spacer>
+         </item>
+         <item>
+          <widget class="QToolButton" name="export_cert_button">
+           <property name="enabled">
+            <bool>false</bool>
+           </property>
+           <property name="toolTip">
+            <string>Export certificate</string>
+           </property>
+           <property name="text">
+            <string>Export...</string>
+           </property>
+           <property name="icon">
+            <iconset theme="save-export"/>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <widget class="QToolButton" name="delete_cert_button">
+           <property name="enabled">
+            <bool>false</bool>
+           </property>
+           <property name="toolTip">
+            <string>Delete certificate</string>
+           </property>
+           <property name="text">
+            <string>Delete</string>
+           </property>
+           <property name="icon">
+            <iconset theme="delete-alert"/>
+           </property>
+          </widget>
+         </item>
+        </layout>
+       </item>
+      </layout>
+     </item>
+     <item>
+      <widget class="QGroupBox" name="groupBox">
+       <property name="enabled">
+        <bool>true</bool>
+       </property>
+       <property name="title">
+        <string>Certificate</string>
+       </property>
+       <layout class="QVBoxLayout" name="verticalLayout_2">
+        <item>
+         <layout class="QFormLayout" name="formLayout">
+          <item row="0" column="0">
+           <widget class="QLabel" name="label">
+            <property name="text">
+             <string>Display Name</string>
+            </property>
+           </widget>
+          </item>
+          <item row="0" column="1">
+           <widget class="QLineEdit" name="cert_display_name"/>
+          </item>
+          <item row="1" column="0">
+           <widget class="QLabel" name="label_2">
+            <property name="text">
+             <string>Common Name</string>
+            </property>
+           </widget>
+          </item>
+          <item row="1" column="1">
+           <widget class="QLineEdit" name="cert_common_name">
+            <property name="readOnly">
+             <bool>true</bool>
+            </property>
+           </widget>
+          </item>
+          <item row="2" column="0">
+           <widget class="QLabel" name="label_3">
+            <property name="text">
+             <string>Expiration Date</string>
+            </property>
+           </widget>
+          </item>
+          <item row="2" column="1">
+           <widget class="QDateTimeEdit" name="cert_expiration_date">
+            <property name="enabled">
+             <bool>true</bool>
+            </property>
+            <property name="readOnly">
+             <bool>true</bool>
+            </property>
+           </widget>
+          </item>
+          <item row="3" column="0">
+           <widget class="QLabel" name="label_4">
+            <property name="text">
+             <string>Expires in</string>
+            </property>
+           </widget>
+          </item>
+          <item row="3" column="1">
+           <widget class="QLabel" name="cert_livetime">
+            <property name="enabled">
+             <bool>true</bool>
+            </property>
+            <property name="text">
+             <string>??? days</string>
+            </property>
+           </widget>
+          </item>
+          <item row="6" column="0">
+           <widget class="QLabel" name="label_6">
+            <property name="text">
+             <string>Fingerprint</string>
+            </property>
+           </widget>
+          </item>
+          <item row="7" column="0">
+           <widget class="QLabel" name="label_7">
+            <property name="text">
+             <string>Notes</string>
+            </property>
+           </widget>
+          </item>
+          <item row="6" column="1">
+           <widget class="QPlainTextEdit" name="cert_fingerprint">
+            <property name="readOnly">
+             <bool>true</bool>
+            </property>
+           </widget>
+          </item>
+          <item row="7" column="1">
+           <widget class="QPlainTextEdit" name="cert_notes"/>
+          </item>
+          <item row="4" column="0">
+           <widget class="QLabel" name="label_5">
+            <property name="text">
+             <string>Host Filter</string>
+            </property>
+           </widget>
+          </item>
+          <item row="4" column="1">
+           <widget class="QLineEdit" name="cert_host_filter">
+            <property name="placeholderText">
+             <string>gemini://*</string>
+            </property>
+           </widget>
+          </item>
+          <item row="5" column="1">
+           <widget class="QCheckBox" name="cert_auto_enable">
+            <property name="toolTip">
+             <string>If this is checked, Kristall will automatically enable this certificate when visiting a URL matching the host filter</string>
+            </property>
+            <property name="text">
+             <string>Auto-Enable Certificate</string>
+            </property>
+           </widget>
+          </item>
+         </layout>
+        </item>
+       </layout>
+      </widget>
+     </item>
+    </layout>
+   </item>
+   <item>
+    <widget class="QDialogButtonBox" name="buttonBox">
+     <property name="orientation">
+      <enum>Qt::Horizontal</enum>
+     </property>
+     <property name="standardButtons">
+      <set>QDialogButtonBox::Ok</set>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>accepted()</signal>
+   <receiver>CertificateManagementDialog</receiver>
+   <slot>accept()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>248</x>
+     <y>254</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>157</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>rejected()</signal>
+   <receiver>CertificateManagementDialog</receiver>
+   <slot>reject()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>316</x>
+     <y>260</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>286</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
+</ui>
diff --git a/src/dialogs/certificateselectiondialog.cpp b/src/dialogs/certificateselectiondialog.cpp
new file mode 100644
index 0000000..f4dab38
--- /dev/null
+++ b/src/dialogs/certificateselectiondialog.cpp
@@ -0,0 +1,130 @@
+#include "certificateselectiondialog.hpp"
+#include "ui_certificateselectiondialog.h"
+
+#include "certificatehelper.hpp"
+#include "kristall.hpp"
+#include "newidentitiydialog.hpp"
+
+#include <random>
+#include <QDebug>
+#include <QItemSelectionModel>
+
+CertificateSelectionDialog::CertificateSelectionDialog(QWidget *parent) :
+    QDialog(parent),
+    ui(new Ui::CertificateSelectionDialog)
+{
+    ui->setupUi(this);
+    this->ui->server_request->setVisible(false);
+
+    this->ui->certificates->setModel(&global_identities);
+    this->ui->certificates->expandAll();
+
+    connect(this->ui->certificates->selectionModel(), &QItemSelectionModel::currentChanged, this, &CertificateSelectionDialog::on_currentChanged);
+}
+
+CertificateSelectionDialog::~CertificateSelectionDialog()
+{
+    delete ui;
+}
+
+void CertificateSelectionDialog::setServerQuery(const QString &query)
+{
+    this->ui->server_request->setText(query);
+    this->ui->server_request->setVisible(not query.isEmpty());
+}
+
+CryptoIdentity CertificateSelectionDialog::identity() const
+{
+    return cryto_identity;
+}
+
+void CertificateSelectionDialog::on_use_temp_cert_30m_clicked()
+{
+    acceptTemporaryWithTimeout(QDateTime::currentDateTime().addSecs(1800 * 12));
+}
+
+void CertificateSelectionDialog::on_use_temp_cert_1h_clicked()
+{
+    acceptTemporaryWithTimeout(QDateTime::currentDateTime().addSecs(3600));
+}
+
+void CertificateSelectionDialog::on_use_temp_cert_12h_clicked()
+{
+    acceptTemporaryWithTimeout(QDateTime::currentDateTime().addSecs(3600 * 12));
+}
+
+void CertificateSelectionDialog::on_use_temp_cert_24h_clicked()
+{
+    acceptTemporaryWithTimeout(QDateTime::currentDateTime().addDays(1));
+}
+
+void CertificateSelectionDialog::on_use_temp_cert_48h_clicked()
+{
+    acceptTemporaryWithTimeout(QDateTime::currentDateTime().addDays(2));
+}
+
+void CertificateSelectionDialog::acceptTemporaryWithTimeout(QDateTime timeout)
+{
+    std::default_random_engine rng;
+    rng.seed(QDateTime::currentDateTime().toMSecsSinceEpoch());
+
+    std::uniform_int_distribution<int> distr(0, 255);
+
+    char items[8];
+    for(auto & c : items) {
+        c = distr(rng);
+    }
+
+    this->cryto_identity = CertificateHelper::createNewIdentity(
+        QByteArray(items, sizeof items).toBase64(QByteArray::OmitTrailingEquals),
+        timeout);
+
+    this->accept();
+}
+
+void CertificateSelectionDialog::on_currentChanged(const QModelIndex &current, const QModelIndex &previous)
+{
+    Q_UNUSED(current)
+    Q_UNUSED(previous)
+    auto id = global_identities.getIdentity(current);
+
+    this->ui->use_selected_cert->setEnabled(id.isValid());
+}
+
+void CertificateSelectionDialog::on_create_new_cert_clicked()
+{
+    NewIdentitiyDialog dialog { this };
+
+    if(dialog.exec() != QDialog::Accepted)
+        return;
+
+    auto id = dialog.createIdentity();
+    if(not id.isValid())
+        return;
+    id.is_persistent = true;
+
+    global_identities.addCertificate(
+        dialog.groupName(),
+        id);
+}
+
+void CertificateSelectionDialog::on_use_selected_cert_clicked()
+{
+    auto sel = this->ui->certificates->selectionModel()->currentIndex();
+    this->cryto_identity = global_identities.getIdentity(sel);
+    if(this->cryto_identity.isValid()) {
+        this->accept();
+    } else {
+        qDebug() << "Tried to use an invalid identity when the button should not be enabled. This is a bug!";
+    }
+}
+
+void CertificateSelectionDialog::on_certificates_doubleClicked(const QModelIndex &index)
+{
+    this->cryto_identity = global_identities.getIdentity(index);
+    if(this->cryto_identity.isValid()) {
+        this->accept();
+    } else {
+        qDebug() << "Tried to use an invalid identity when the button should not be enabled. This is a bug!";
+    }
+}
diff --git a/src/dialogs/certificateselectiondialog.hpp b/src/dialogs/certificateselectiondialog.hpp
new file mode 100644
index 0000000..e628f5c
--- /dev/null
+++ b/src/dialogs/certificateselectiondialog.hpp
@@ -0,0 +1,54 @@
+#ifndef CERTIFICATESELECTIONDIALOG_HPP
+#define CERTIFICATESELECTIONDIALOG_HPP
+
+#include <QDialog>
+
+#include "cryptoidentity.hpp"
+
+namespace Ui {
+class CertificateSelectionDialog;
+}
+
+class CertificateSelectionDialog : public QDialog
+{
+    Q_OBJECT
+
+public:
+    explicit CertificateSelectionDialog(QWidget *parent = nullptr);
+    ~CertificateSelectionDialog();
+
+    void setServerQuery(QString const & query);
+
+    CryptoIdentity identity() const;
+
+private slots:
+    void on_use_temp_cert_30m_clicked();
+
+    void on_use_temp_cert_1h_clicked();
+
+    void on_use_temp_cert_12h_clicked();
+
+    void on_use_temp_cert_24h_clicked();
+
+    void on_use_temp_cert_48h_clicked();
+
+    void on_create_new_cert_clicked();
+
+    void on_use_selected_cert_clicked();
+
+    void on_certificates_doubleClicked(const QModelIndex &index);
+
+private:
+    //! Creates an anonymous identity with a randomly chosen name that
+    //! will time out on `timeout`, then accepts the dialog.
+    void acceptTemporaryWithTimeout(QDateTime timeout);
+
+
+    void on_currentChanged(const QModelIndex &current, const QModelIndex &previous);
+private:
+    Ui::CertificateSelectionDialog *ui;
+
+    CryptoIdentity cryto_identity;
+};
+
+#endif // CERTIFICATESELECTIONDIALOG_HPP
diff --git a/src/dialogs/certificateselectiondialog.ui b/src/dialogs/certificateselectiondialog.ui
new file mode 100644
index 0000000..d6128f9
--- /dev/null
+++ b/src/dialogs/certificateselectiondialog.ui
@@ -0,0 +1,172 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>CertificateSelectionDialog</class>
+ <widget class="QDialog" name="CertificateSelectionDialog">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>474</width>
+    <height>355</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Select client certificate</string>
+  </property>
+  <property name="windowIcon">
+   <iconset resource="icons.qrc">
+    <normaloff>:/icons/certificate.svg</normaloff>:/icons/certificate.svg</iconset>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout">
+   <item>
+    <widget class="QLabel" name="label">
+     <property name="text">
+      <string>Select existing certificate:</string>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <widget class="QLabel" name="server_request">
+     <property name="font">
+      <font>
+       <weight>75</weight>
+       <bold>true</bold>
+      </font>
+     </property>
+     <property name="text">
+      <string>TextLabel</string>
+     </property>
+     <property name="wordWrap">
+      <bool>true</bool>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <widget class="QTreeView" name="certificates">
+     <property name="headerHidden">
+      <bool>true</bool>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout_2">
+     <item>
+      <widget class="QPushButton" name="create_new_cert">
+       <property name="text">
+        <string>Create new identity</string>
+       </property>
+       <property name="icon">
+        <iconset resource="icons.qrc">
+         <normaloff>:/icons/plus.svg</normaloff>:/icons/plus.svg</iconset>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <spacer name="horizontalSpacer">
+       <property name="orientation">
+        <enum>Qt::Horizontal</enum>
+       </property>
+       <property name="sizeHint" stdset="0">
+        <size>
+         <width>40</width>
+         <height>20</height>
+        </size>
+       </property>
+      </spacer>
+     </item>
+     <item>
+      <widget class="QPushButton" name="use_selected_cert">
+       <property name="enabled">
+        <bool>false</bool>
+       </property>
+       <property name="text">
+        <string>Use</string>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+   <item>
+    <widget class="Line" name="line">
+     <property name="orientation">
+      <enum>Qt::Horizontal</enum>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <widget class="QLabel" name="label_2">
+     <property name="text">
+      <string>Create transient session certificate:</string>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout">
+     <item>
+      <widget class="QPushButton" name="use_temp_cert_30m">
+       <property name="text">
+        <string>30 Minutes</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QPushButton" name="use_temp_cert_1h">
+       <property name="text">
+        <string>1 Hour</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QPushButton" name="use_temp_cert_12h">
+       <property name="text">
+        <string>12 Hours</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QPushButton" name="use_temp_cert_24h">
+       <property name="text">
+        <string>24 Hours</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QPushButton" name="use_temp_cert_48h">
+       <property name="text">
+        <string>48 Hours</string>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+   <item>
+    <widget class="QDialogButtonBox" name="buttonBox">
+     <property name="standardButtons">
+      <set>QDialogButtonBox::Cancel</set>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <resources>
+  <include location="icons.qrc"/>
+ </resources>
+ <connections>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>rejected()</signal>
+   <receiver>CertificateSelectionDialog</receiver>
+   <slot>reject()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>236</x>
+     <y>333</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>236</x>
+     <y>177</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
+</ui>
diff --git a/src/dialogs/newidentitiydialog.cpp b/src/dialogs/newidentitiydialog.cpp
new file mode 100644
index 0000000..af2a97e
--- /dev/null
+++ b/src/dialogs/newidentitiydialog.cpp
@@ -0,0 +1,81 @@
+#include "newidentitiydialog.hpp"
+#include "ui_newidentitiydialog.h"
+
+#include "certificatehelper.hpp"
+#include "kristall.hpp"
+
+#include <QPushButton>
+#include <QDebug>
+
+NewIdentitiyDialog::NewIdentitiyDialog(QWidget *parent) :
+    QDialog(parent),
+    ui(new Ui::NewIdentitiyDialog)
+{
+    ui->setupUi(this);
+
+    ui->display_name->setText("Unnamed");
+    ui->common_name->setText("Unnamed");
+    ui->expiration_date->setDate(QDate::currentDate().addYears(1));
+    ui->expiration_date->setTime(QTime(12, 00));
+
+    ui->group->clear();
+    for(auto group_name : global_identities.groups())
+    {
+        ui->group->addItem(group_name);
+    }
+}
+
+NewIdentitiyDialog::~NewIdentitiyDialog()
+{
+    delete ui;
+}
+
+CryptoIdentity NewIdentitiyDialog::createIdentity() const
+{
+    auto id = CertificateHelper::createNewIdentity(
+        this->ui->common_name->text(),
+        this->ui->expiration_date->dateTime()
+    );
+    id.display_name = this->ui->display_name->text();
+    return id;
+}
+
+QString NewIdentitiyDialog::groupName() const
+{
+    return this->ui->group->currentText();
+}
+
+void NewIdentitiyDialog::setGroupName(const QString &name)
+{
+    this->ui->group->setCurrentText(name);
+}
+
+void NewIdentitiyDialog::updateUI()
+{
+    bool is_ok = true;
+
+    is_ok &= (not this->ui->group->currentText().isEmpty());
+    is_ok &= (not this->ui->common_name->text().isEmpty());
+    is_ok &= (not this->ui->display_name->text().isEmpty());
+    is_ok &= (this->ui->expiration_date->dateTime() > QDateTime::currentDateTime());
+
+    this->ui->buttonBox->button(QDialogButtonBox::Ok)->setEnabled(is_ok);
+}
+
+void NewIdentitiyDialog::on_group_editTextChanged(const QString &arg1)
+{
+    Q_UNUSED(arg1);
+    this->updateUI();
+}
+
+void NewIdentitiyDialog::on_display_name_textChanged(const QString &arg1)
+{
+    Q_UNUSED(arg1);
+    this->updateUI();
+}
+
+void NewIdentitiyDialog::on_common_name_textChanged(const QString &arg1)
+{
+    Q_UNUSED(arg1);
+    this->updateUI();
+}
diff --git a/src/dialogs/newidentitiydialog.hpp b/src/dialogs/newidentitiydialog.hpp
new file mode 100644
index 0000000..83d740b
--- /dev/null
+++ b/src/dialogs/newidentitiydialog.hpp
@@ -0,0 +1,41 @@
+#ifndef NEWIDENTITIYDIALOG_HPP
+#define NEWIDENTITIYDIALOG_HPP
+
+#include <QDialog>
+
+#include "cryptoidentity.hpp"
+
+namespace Ui {
+class NewIdentitiyDialog;
+}
+
+class NewIdentitiyDialog : public QDialog
+{
+    Q_OBJECT
+
+public:
+    explicit NewIdentitiyDialog(QWidget *parent = nullptr);
+    ~NewIdentitiyDialog();
+
+    //! Creates a new identity from the currently set
+    //! user settings.
+    CryptoIdentity createIdentity() const;
+
+    QString groupName() const;
+    void setGroupName(QString const & name);
+
+private slots:
+    void on_group_editTextChanged(const QString &arg1);
+
+    void on_display_name_textChanged(const QString &arg1);
+
+    void on_common_name_textChanged(const QString &arg1);
+
+private:
+    void updateUI();
+
+private:
+    Ui::NewIdentitiyDialog *ui;
+};
+
+#endif // NEWIDENTITIYDIALOG_HPP
diff --git a/src/dialogs/newidentitiydialog.ui b/src/dialogs/newidentitiydialog.ui
new file mode 100644
index 0000000..556ac93
--- /dev/null
+++ b/src/dialogs/newidentitiydialog.ui
@@ -0,0 +1,118 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>NewIdentitiyDialog</class>
+ <widget class="QDialog" name="NewIdentitiyDialog">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>328</width>
+    <height>191</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Create new certificate</string>
+  </property>
+  <property name="windowIcon">
+   <iconset resource="icons.qrc">
+    <normaloff>:/icons/certificate.svg</normaloff>:/icons/certificate.svg</iconset>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout">
+   <item>
+    <layout class="QFormLayout" name="formLayout">
+     <item row="1" column="0">
+      <widget class="QLabel" name="label">
+       <property name="text">
+        <string>Display Name</string>
+       </property>
+      </widget>
+     </item>
+     <item row="3" column="0">
+      <widget class="QLabel" name="label_2">
+       <property name="text">
+        <string>Expiration Date</string>
+       </property>
+      </widget>
+     </item>
+     <item row="1" column="1">
+      <widget class="QLineEdit" name="display_name"/>
+     </item>
+     <item row="3" column="1">
+      <widget class="QDateTimeEdit" name="expiration_date"/>
+     </item>
+     <item row="2" column="1">
+      <widget class="QLineEdit" name="common_name"/>
+     </item>
+     <item row="2" column="0">
+      <widget class="QLabel" name="label_3">
+       <property name="text">
+        <string>Common Name</string>
+       </property>
+      </widget>
+     </item>
+     <item row="0" column="0">
+      <widget class="QLabel" name="label_4">
+       <property name="text">
+        <string>Group</string>
+       </property>
+      </widget>
+     </item>
+     <item row="0" column="1">
+      <widget class="QComboBox" name="group">
+       <property name="editable">
+        <bool>true</bool>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+   <item>
+    <widget class="QDialogButtonBox" name="buttonBox">
+     <property name="orientation">
+      <enum>Qt::Horizontal</enum>
+     </property>
+     <property name="standardButtons">
+      <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <resources>
+  <include location="icons.qrc"/>
+ </resources>
+ <connections>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>accepted()</signal>
+   <receiver>NewIdentitiyDialog</receiver>
+   <slot>accept()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>248</x>
+     <y>254</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>157</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>rejected()</signal>
+   <receiver>NewIdentitiyDialog</receiver>
+   <slot>reject()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>316</x>
+     <y>260</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>286</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
+</ui>
diff --git a/src/dialogs/settingsdialog.cpp b/src/dialogs/settingsdialog.cpp
new file mode 100644
index 0000000..ebd1664
--- /dev/null
+++ b/src/dialogs/settingsdialog.cpp
@@ -0,0 +1,613 @@
+#include "settingsdialog.hpp"
+#include "ui_settingsdialog.h"
+#include <QFontDialog>
+#include <QColorDialog>
+#include <QStyle>
+#include <QSettings>
+#include <QInputDialog>
+#include <QFileDialog>
+#include <QMessageBox>
+#include <QDebug>
+
+#include <cassert>
+
+#include "kristall.hpp"
+
+SettingsDialog::SettingsDialog(QWidget *parent) :
+    QDialog(parent),
+    ui(new Ui::SettingsDialog),
+    current_style()
+{
+    ui->setupUi(this);
+
+    static_assert(DocumentStyle::Fixed == 0);
+    static_assert(DocumentStyle::AutoDarkTheme == 1);
+    static_assert(DocumentStyle::AutoLightTheme == 2);
+
+    this->ui->auto_theme->clear();
+    this->ui->auto_theme->addItem(tr("Disabled"), QVariant::fromValue<int>(DocumentStyle::Fixed));
+    this->ui->auto_theme->addItem(tr("Dark Theme"), QVariant::fromValue<int>(DocumentStyle::AutoDarkTheme));
+    this->ui->auto_theme->addItem(tr("Light Theme"), QVariant::fromValue<int>(DocumentStyle::AutoLightTheme));
+
+    this->ui->ui_theme->clear();
+    this->ui->ui_theme->addItem(tr("OS Default"), QVariant::fromValue<int>(int(Theme::os_default)));
+    this->ui->ui_theme->addItem(tr("Light"), QVariant::fromValue<int>(int(Theme::light)));
+    this->ui->ui_theme->addItem(tr("Dark"), QVariant::fromValue<int>(int(Theme::dark)));
+
+    setGeminiStyle(DocumentStyle { });
+
+    int items = global_settings.beginReadArray("Themes");
+
+    this->predefined_styles.clear();
+    for(int i = 0; i < items; i++)
+    {
+        global_settings.setArrayIndex(i);
+
+        QString name = global_settings.value("name").toString();
+
+        DocumentStyle style;
+        style.load(global_settings);
+
+        this->predefined_styles.insert(name, style);
+    }
+
+    global_settings.endArray();
+
+    this->ui->presets->clear();
+    for(auto const & style_name : this->predefined_styles.keys())
+    {
+        this->ui->presets->addItem(style_name);
+    }
+
+    if(items > 0) {
+        on_presets_currentIndexChanged(0);
+    } else {
+        this->on_presets_currentIndexChanged(-1);
+    }
+
+    this->ui->redirection_mode->clear();
+    this->ui->redirection_mode->addItem("Ask for cross-scheme or cross-host redirection", int(GenericSettings::WarnOnHostChange | GenericSettings::WarnOnSchemeChange));
+    this->ui->redirection_mode->addItem("Ask for cross-scheme redirection", int(GenericSettings::WarnOnSchemeChange));
+    this->ui->redirection_mode->addItem("Ask for cross-host redirection", int(GenericSettings::WarnOnHostChange));
+    this->ui->redirection_mode->addItem("Ask for all redirection", int(GenericSettings::WarnAlways));
+    this->ui->redirection_mode->addItem("Silently redirect everything", int(GenericSettings::WarnNever));
+}
+
+SettingsDialog::~SettingsDialog()
+{
+    delete ui;
+}
+
+static QString formatFont(QFont const & font)
+{
+    QString style;
+    if(font.italic() and font.bold())
+        style = "bold, italic";
+    else if(font.italic())
+        style = "italic";
+    else if(font.bold())
+        style = "bold";
+    else
+        style = "regular";
+
+    return QString("%1 (%2pt, %3)")
+        .arg(font.family())
+        .arg(font.pointSizeF())
+        .arg(style);
+}
+
+void SettingsDialog::setGeminiStyle(DocumentStyle const &style)
+{
+    static const QString COLOR_STYLE("border: 1px solid black; padding: 4px; background-color : %1; color : %2;");
+
+    this->current_style = style;
+
+    this->ui->auto_theme->setCurrentIndex(this->current_style.theme);
+
+    this->ui->page_margin->setValue(this->current_style.margin);
+
+    auto setFontAndColor = [this](QLabel * label, QFont font, QColor color)
+    {
+        label->setText(formatFont(font));
+        label->setStyleSheet(COLOR_STYLE
+            .arg(this->current_style.background_color.name())
+            .arg(color.name()));
+    };
+
+    ui->bg_preview->setStyleSheet(COLOR_STYLE
+        .arg(this->current_style.background_color.name())
+        .arg("#FF00FF"));
+
+    ui->quote_preview->setStyleSheet(COLOR_STYLE
+        .arg(this->current_style.blockquote_color.name())
+        .arg("#FF00FF"));
+
+    ui->link_local_preview->setStyleSheet(COLOR_STYLE
+        .arg(this->current_style.background_color.name())
+        .arg(this->current_style.internal_link_color.name()));
+
+    ui->link_foreign_preview->setStyleSheet(COLOR_STYLE
+        .arg(this->current_style.background_color.name())
+        .arg(this->current_style.external_link_color.name()));
+
+    ui->link_cross_preview->setStyleSheet(COLOR_STYLE
+        .arg(this->current_style.background_color.name())
+        .arg(this->current_style.cross_scheme_link_color.name()));
+
+    setFontAndColor(this->ui->std_preview, this->current_style.standard_font, this->current_style.standard_color);
+    setFontAndColor(this->ui->pre_preview, this->current_style.preformatted_font, this->current_style.preformatted_color);
+    setFontAndColor(this->ui->h1_preview, this->current_style.h1_font, this->current_style.h1_color);
+    setFontAndColor(this->ui->h2_preview, this->current_style.h2_font, this->current_style.h2_color);
+    setFontAndColor(this->ui->h3_preview, this->current_style.h3_font, this->current_style.h3_color);
+
+    this->reloadStylePreview();
+}
+
+ProtocolSetup SettingsDialog::protocols() const
+{
+    ProtocolSetup protocols;
+#define M(X) \
+    protocols.X   = this->ui->enable_##X->isChecked();
+    PROTOCOLS(M)
+#undef M
+    return protocols;
+}
+
+void SettingsDialog::setProtocols(ProtocolSetup const & protocols)
+{
+#define M(X) \
+    this->ui->enable_##X->setChecked(protocols.X);
+    PROTOCOLS(M)
+        #undef M
+}
+
+SslTrust SettingsDialog::geminiSslTrust() const
+{
+    return this->ui->gemini_trust_editor->trust();
+}
+
+void SettingsDialog::setGeminiSslTrust(const SslTrust &trust)
+{
+    return this->ui->gemini_trust_editor->setTrust(trust);
+}
+
+SslTrust SettingsDialog::httpsSslTrust() const
+{
+    return this->ui->https_trust_editor->trust();
+}
+
+void SettingsDialog::setHttpsSslTrust(const SslTrust &trust)
+{
+    this->ui->https_trust_editor->setTrust(trust);
+}
+
+void SettingsDialog::setOptions(const GenericSettings &options)
+{
+    this->current_options = options;
+
+    this->ui->ui_theme->setCurrentIndex(0);
+    for(int i = 0; i < this->ui->ui_theme->count(); i++) {
+        if(this->ui->ui_theme->itemData(i).toInt() == int(options.theme)) {
+            this->ui->ui_theme->setCurrentIndex(i);
+            break;
+        }
+    }
+
+    this->ui->start_page->setText(this->current_options.start_page);
+
+    if(this->current_options.gophermap_display == GenericSettings::PlainText) {
+        this->ui->gophermap_text->setChecked(true);
+    } else {
+        this->ui->gophermap_icon->setChecked(true);
+    }
+
+    if(this->current_options.text_display == GenericSettings::PlainText) {
+        this->ui->fancypants_off->setChecked(true);
+    } else {
+        this->ui->fancypants_on->setChecked(true);
+    }
+
+    if(this->current_options.enable_text_decoration) {
+        this->ui->texthl_on->setChecked(true);
+    } else {
+        this->ui->texthl_off->setChecked(true);
+    }
+
+    if(this->current_options.use_os_scheme_handler) {
+        this->ui->scheme_os_default->setChecked(true);
+    } else {
+        this->ui->scheme_error->setChecked(true);
+    }
+
+    this->ui->max_redirects->setValue(this->current_options.max_redirections);
+
+    this->ui->redirection_mode->setCurrentIndex(0);
+    for(int i = 0; i < this->ui->redirection_mode->count(); i++)
+    {
+        if(this->ui->redirection_mode->itemData(i).toInt() == this->current_options.redirection_policy) {
+            this->ui->redirection_mode->setCurrentIndex(i);
+            break;
+        }
+    }
+
+    this->ui->network_timeout->setValue(this->current_options.network_timeout);
+}
+
+GenericSettings SettingsDialog::options() const
+{
+    return this->current_options;
+}
+
+void SettingsDialog::reloadStylePreview()
+{
+    QFile document_src { ":/about/style-preview.gemini" };
+    bool ok = document_src.open(QFile::ReadOnly);
+    assert(ok and "failed to find style-preview.gemini!");
+
+    auto const document = document_src.readAll();
+
+    QString host = this->ui->preview_url->text();
+    if(host.length() == 0)
+        host = "preview";
+
+    QUrl url { QUrl(QString("about://%1/foobar").arg(host)) };
+
+    DocumentOutlineModel outline;
+    auto doc = GeminiRenderer::render(
+        document,
+        url,
+        current_style.derive(url),
+        outline
+    );
+
+    ui->style_preview->setStyleSheet(QString("QTextBrowser { background-color: %1; }")
+                                     .arg(doc->background_color.name()));
+    ui->style_preview->setDocument(doc.get());
+    preview_document = std::move(doc);
+}
+
+void SettingsDialog::updateFont(QFont & input)
+{
+    QFontDialog dialog { this };
+
+    dialog.setCurrentFont(input);
+
+    if(dialog.exec() == QDialog::Accepted) {
+        input = dialog.currentFont();
+        setGeminiStyle(current_style);
+    }
+}
+
+void SettingsDialog::on_std_change_font_clicked()
+{
+    updateFont(current_style.standard_font);
+}
+
+void SettingsDialog::on_pre_change_font_clicked()
+{
+    updateFont(current_style.preformatted_font);
+}
+
+void SettingsDialog::on_h1_change_font_clicked()
+{
+    updateFont(current_style.h1_font);
+}
+
+void SettingsDialog::on_h2_change_font_clicked()
+{
+    updateFont(current_style.h2_font);
+}
+
+void SettingsDialog::on_h3_change_font_clicked()
+{
+    updateFont(current_style.h3_font);
+}
+
+void SettingsDialog::updateColor(QColor &input)
+{
+    QColorDialog dialog { this };
+
+    dialog.setCurrentColor(input);
+
+    if(dialog.exec() == QDialog::Accepted) {
+        input = dialog.currentColor();
+        setGeminiStyle(current_style);
+    }
+}
+
+void SettingsDialog::on_std_change_color_clicked()
+{
+    updateColor(current_style.standard_color);
+}
+
+void SettingsDialog::on_pre_change_color_clicked()
+{
+    updateColor(current_style.preformatted_color);
+}
+
+void SettingsDialog::on_h1_change_color_clicked()
+{
+    updateColor(current_style.h1_color);
+}
+
+void SettingsDialog::on_h2_change_color_clicked()
+{
+    updateColor(current_style.h2_color);
+}
+
+void SettingsDialog::on_h3_change_color_clicked()
+{
+    updateColor(current_style.h3_color);
+}
+
+void SettingsDialog::on_bg_change_color_clicked()
+{
+    updateColor(current_style.background_color);
+}
+
+void SettingsDialog::on_link_local_change_color_clicked()
+{
+    updateColor(current_style.internal_link_color);
+}
+
+void SettingsDialog::on_link_foreign_change_color_clicked()
+{
+    updateColor(current_style.external_link_color);
+}
+
+void SettingsDialog::on_link_cross_change_color_clicked()
+{
+    updateColor(current_style.cross_scheme_link_color);
+}
+void SettingsDialog::on_quote_change_color_clicked()
+{
+    updateColor(current_style.blockquote_color);
+}
+
+void SettingsDialog::on_link_local_prefix_textChanged(const QString &text)
+{
+    current_style.internal_link_prefix = text;
+    reloadStylePreview();
+}
+
+void SettingsDialog::on_link_foreign_prefix_textChanged(const QString &text)
+{
+    current_style.external_link_prefix = text;
+    reloadStylePreview();
+}
+
+void SettingsDialog::on_auto_theme_currentIndexChanged(int index)
+{
+    if(index >= 0) {
+        current_style.theme = DocumentStyle::Theme(index);
+        reloadStylePreview();
+    }
+}
+
+void SettingsDialog::on_preview_url_textChanged(const QString &)
+{
+    this->reloadStylePreview();
+}
+
+void SettingsDialog::on_page_margin_valueChanged(double value)
+{
+    this->current_style.margin = value;
+    this->reloadStylePreview();
+}
+
+void SettingsDialog::on_presets_currentIndexChanged(int index)
+{
+    this->ui->preset_load->setEnabled(index >= 0);
+    this->ui->preset_save->setEnabled(index >= 0);
+    this->ui->preset_export->setEnabled(index >= 0);
+}
+
+void SettingsDialog::on_preset_new_clicked()
+{
+    QInputDialog dlg { this };
+    dlg.setInputMode(QInputDialog::TextInput);
+    dlg.setOkButtonText("Save");
+    dlg.setCancelButtonText("Cancel");
+    dlg.setLabelText("Enter the name of your new preset:");
+
+    if(dlg.exec() != QInputDialog::Accepted)
+        return;
+    QString name = dlg.textValue();
+
+    bool override = false;
+    if(this->predefined_styles.contains(name))
+    {
+        auto response = QMessageBox::question(this, "Kristall", QString("A style with the name '%1' already exists! Replace?").arg(name));
+        if(response != QMessageBox::Yes)
+            return;
+        override = true;
+    }
+
+    this->predefined_styles.insert(name, this->current_style);
+
+    if(not override)
+    {
+        this->ui->presets->addItem(name);
+    }
+}
+
+void SettingsDialog::on_preset_save_clicked()
+{
+    QString name = this->ui->presets->currentText();
+    if(name.isEmpty())
+        return;
+
+    auto response = QMessageBox::question(this, "Kristall", QString("Do you want to override the style '%1'?").arg(name));
+    if(response != QMessageBox::Yes)
+        return;
+
+    this->predefined_styles.insert(name, this->current_style);
+}
+
+
+void SettingsDialog::on_preset_load_clicked()
+{
+    QString name = this->ui->presets->currentText();
+    if(name.isEmpty())
+        return;
+
+    auto response = QMessageBox::question(this, "Kristall", QString("Do you want to load the style '%1'?\r\nThis will discard all currently set up values!").arg(name));
+    if(response != QMessageBox::Yes)
+        return;
+
+    this->setGeminiStyle(this->predefined_styles.value(name));
+}
+
+
+void SettingsDialog::on_SettingsDialog_accepted()
+{
+    global_settings.beginWriteArray("Themes", this->predefined_styles.size());
+
+    int index = 0;
+    for(auto const & style_name : this->predefined_styles.keys())
+    {
+        global_settings.setArrayIndex(index);
+
+        global_settings.setValue("name", style_name);
+        this->predefined_styles.value(style_name).save(global_settings);
+
+        index += 1;
+    }
+    global_settings.endArray();
+}
+
+void SettingsDialog::on_preset_import_clicked()
+{
+    QFileDialog dialog { this };
+    dialog.setAcceptMode(QFileDialog::AcceptOpen);
+    dialog.selectNameFilter("Kristall Theme (*.kthm)");
+
+    if(dialog.exec() !=QFileDialog::Accepted)
+        return;
+
+    QString fileName = dialog.selectedFiles().at(0);
+
+    QSettings import_settings { fileName, QSettings::IniFormat };
+
+    QString name;
+
+    name = import_settings.value("name").toString();
+
+    while(name.isEmpty())
+    {
+        QInputDialog dlg { this };
+        dlg.setInputMode(QInputDialog::TextInput);
+        dlg.setOkButtonText("Save");
+        dlg.setCancelButtonText("Cancel");
+        dlg.setLabelText("Imported preset has no name.\r\nPlease enter a name for the preset:");
+        if(dlg.exec() != QDialog::Accepted)
+            return;
+        name = dlg.textValue();
+    }
+
+    bool override = false;
+    if(this->predefined_styles.contains(name))
+    {
+        auto response = QMessageBox::question(this, "Kristall", QString("Do you want to override the style '%1'?").arg(name));
+        if(response != QMessageBox::Yes)
+            return;
+        override = true;
+    }
+
+    DocumentStyle style;
+    style.load(import_settings);
+
+    this->predefined_styles.insert(name, style);
+
+    if(not override)
+    {
+        this->ui->presets->addItem(name);
+    }
+}
+
+void SettingsDialog::on_preset_export_clicked()
+{
+    QString name = this->ui->presets->currentText();
+    if(name.isEmpty())
+        return;
+
+    QFileDialog dialog { this };
+    dialog.setAcceptMode(QFileDialog::AcceptSave);
+    dialog.selectNameFilter("Kristall Theme (*.kthm)");
+    dialog.selectFile(QString("%1.kthm").arg(name));
+
+    if(dialog.exec() !=QFileDialog::Accepted)
+        return;
+
+    QString fileName = dialog.selectedFiles().at(0);
+
+    QSettings export_settings { fileName, QSettings::IniFormat };
+    export_settings.setValue("name", name);
+    this->predefined_styles.value(name).save(export_settings);
+    export_settings.sync();
+}
+
+void SettingsDialog::on_start_page_textChanged(const QString &start_page)
+{
+    this->current_options.start_page = start_page;
+}
+
+void SettingsDialog::on_ui_theme_currentIndexChanged(int index)
+{
+    this->current_options.theme = Theme(this->ui->ui_theme->itemData(index).toInt());
+}
+
+void SettingsDialog::on_fancypants_on_clicked()
+{
+    this->current_options.text_display = GenericSettings::FormattedText;
+}
+
+void SettingsDialog::on_fancypants_off_clicked()
+{
+    this->current_options.text_display = GenericSettings::PlainText;
+}
+
+void SettingsDialog::on_texthl_on_clicked()
+{
+    this->current_options.enable_text_decoration = true;
+}
+
+void SettingsDialog::on_texthl_off_clicked()
+{
+    this->current_options.enable_text_decoration = false;
+}
+
+void SettingsDialog::on_gophermap_icon_clicked()
+{
+    this->current_options.gophermap_display = GenericSettings::FormattedText;
+}
+
+void SettingsDialog::on_gophermap_text_clicked()
+{
+    this->current_options.gophermap_display = GenericSettings::PlainText;
+}
+
+void SettingsDialog::on_scheme_os_default_clicked()
+{
+    this->current_options.use_os_scheme_handler = true;
+}
+
+void SettingsDialog::on_scheme_error_clicked()
+{
+    this->current_options.use_os_scheme_handler = false;
+}
+
+void SettingsDialog::on_redirection_mode_currentIndexChanged(int index)
+{
+    this->current_options.redirection_policy = GenericSettings::RedirectionWarning(this->ui->redirection_mode->itemData(index).toInt());
+}
+
+void SettingsDialog::on_max_redirects_valueChanged(int max_redirections)
+{
+    this->current_options.max_redirections = max_redirections;
+}
+
+void SettingsDialog::on_network_timeout_valueChanged(int timeout)
+{
+    this->current_options.network_timeout = timeout;
+}
diff --git a/src/dialogs/settingsdialog.hpp b/src/dialogs/settingsdialog.hpp
new file mode 100644
index 0000000..045b861
--- /dev/null
+++ b/src/dialogs/settingsdialog.hpp
@@ -0,0 +1,143 @@
+#ifndef SETTINGSDIALOG_HPP
+#define SETTINGSDIALOG_HPP
+
+#include <QDialog>
+
+#include "renderers/geminirenderer.hpp"
+#include "protocolsetup.hpp"
+#include "documentstyle.hpp"
+#include "ssltrust.hpp"
+#include "kristall.hpp"
+
+namespace Ui {
+class SettingsDialog;
+}
+
+class SettingsDialog : public QDialog
+{
+    Q_OBJECT
+
+public:
+    explicit SettingsDialog(QWidget *parent = nullptr);
+    ~SettingsDialog();
+
+    void setGeminiStyle(DocumentStyle const & style);
+
+    DocumentStyle geminiStyle() const {
+        return current_style;
+    }
+
+    ProtocolSetup protocols() const;
+    void setProtocols(ProtocolSetup const & proto);
+
+    SslTrust geminiSslTrust() const;
+    void setGeminiSslTrust(SslTrust const & trust);
+
+    SslTrust httpsSslTrust() const;
+    void setHttpsSslTrust(SslTrust const & trust);
+
+    GenericSettings options() const;
+    void setOptions(GenericSettings const & options);
+
+private slots:
+    void on_std_change_font_clicked();
+
+    void on_pre_change_font_clicked();
+
+    void on_h1_change_font_clicked();
+
+    void on_h2_change_font_clicked();
+
+    void on_h3_change_font_clicked();
+
+    void on_std_change_color_clicked();
+
+    void on_pre_change_color_clicked();
+
+    void on_h1_change_color_clicked();
+
+    void on_h2_change_color_clicked();
+
+    void on_h3_change_color_clicked();
+
+    void on_bg_change_color_clicked();
+
+    void on_link_local_change_color_clicked();
+
+    void on_link_foreign_change_color_clicked();
+
+    void on_link_cross_change_color_clicked();
+
+    void on_link_local_prefix_textChanged(const QString &arg1);
+
+    void on_link_foreign_prefix_textChanged(const QString &arg1);
+
+    void on_auto_theme_currentIndexChanged(int index);
+
+    void on_preview_url_textChanged(const QString &arg1);
+
+    void on_page_margin_valueChanged(double arg1);
+
+    void on_presets_currentIndexChanged(int index);
+
+    void on_preset_new_clicked();
+
+    void on_SettingsDialog_accepted();
+
+    void on_quote_change_color_clicked();
+
+    void on_preset_save_clicked();
+
+    void on_preset_load_clicked();
+
+    void on_preset_import_clicked();
+
+    void on_preset_export_clicked();
+
+    void on_start_page_textChanged(const QString &arg1);
+
+    void on_ui_theme_currentIndexChanged(int index);
+
+    void on_fancypants_on_clicked();
+
+    void on_fancypants_off_clicked();
+
+    void on_texthl_on_clicked();
+
+    void on_texthl_off_clicked();
+
+    void on_gophermap_icon_clicked();
+
+    void on_gophermap_text_clicked();
+
+    void on_scheme_os_default_clicked();
+
+    void on_scheme_error_clicked();
+
+    void on_redirection_mode_currentIndexChanged(int index);
+
+    void on_max_redirects_valueChanged(int arg1);
+
+    void on_network_timeout_valueChanged(int arg1);
+
+private:
+    void reloadStylePreview();
+
+    void updateFont(QFont & input);
+
+    void updateColor(QColor & input);
+
+private:
+    Ui::SettingsDialog *ui;
+
+    DocumentStyle current_style;
+    std::unique_ptr<QTextDocument> preview_document;
+
+    QMap<QString, DocumentStyle> predefined_styles;
+
+    SslTrust current_trust;
+
+    GenericSettings current_options;
+};
+
+#endif // SETTINGSDIALOG_HPP
diff --git a/src/dialogs/settingsdialog.ui b/src/dialogs/settingsdialog.ui
new file mode 100644
index 0000000..9acbca6
--- /dev/null
+++ b/src/dialogs/settingsdialog.ui
@@ -0,0 +1,940 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>SettingsDialog</class>
+ <widget class="QDialog" name="SettingsDialog">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>850</width>
+    <height>650</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Settings</string>
+  </property>
+  <property name="windowIcon">
+   <iconset theme="settings">
+    <normaloff>.</normaloff>.</iconset>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout">
+   <item>
+    <widget class="QTabWidget" name="tabWidget">
+     <property name="currentIndex">
+      <number>2</number>
+     </property>
+     <widget class="QWidget" name="generic">
+      <attribute name="icon">
+       <iconset theme="settings">
+        <normaloff>.</normaloff>.</iconset>
+      </attribute>
+      <attribute name="title">
+       <string>Generic</string>
+      </attribute>
+      <layout class="QFormLayout" name="formLayout">
+       <item row="0" column="0">
+        <widget class="QLabel" name="label_15">
+         <property name="text">
+          <string>UI Theme</string>
+         </property>
+        </widget>
+       </item>
+       <item row="0" column="1">
+        <widget class="QComboBox" name="ui_theme"/>
+       </item>
+       <item row="1" column="0">
+        <widget class="QLabel" name="label_14">
+         <property name="text">
+          <string>Start Page:</string>
+         </property>
+        </widget>
+       </item>
+       <item row="1" column="1">
+        <widget class="QLineEdit" name="start_page">
+         <property name="placeholderText">
+          <string>about://blank</string>
+         </property>
+        </widget>
+       </item>
+       <item row="2" column="0">
+        <widget class="QLabel" name="label_16">
+         <property name="text">
+          <string>Enabled Protocols</string>
+         </property>
+        </widget>
+       </item>
+       <item row="2" column="1">
+        <layout class="QHBoxLayout" name="horizontalLayout">
+         <item>
+          <widget class="QCheckBox" name="enable_gemini">
+           <property name="text">
+            <string>Gemini</string>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <widget class="QCheckBox" name="enable_gopher">
+           <property name="enabled">
+            <bool>true</bool>
+           </property>
+           <property name="text">
+            <string>Gopher</string>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <widget class="QCheckBox" name="enable_finger">
+           <property name="enabled">
+            <bool>true</bool>
+           </property>
+           <property name="text">
+            <string>Finger</string>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <widget class="QCheckBox" name="enable_http">
+           <property name="text">
+            <string>HTTP</string>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <widget class="QCheckBox" name="enable_https">
+           <property name="text">
+            <string>HTTPS</string>
+           </property>
+          </widget>
+         </item>
+        </layout>
+       </item>
+       <item row="3" column="0">
+        <widget class="QLabel" name="label_19">
+         <property name="text">
+          <string>Text Rendering</string>
+         </property>
+        </widget>
+       </item>
+       <item row="3" column="1">
+        <layout class="QHBoxLayout" name="horizontalLayout_5">
+         <item>
+          <widget class="QRadioButton" name="fancypants_on">
+           <property name="text">
+            <string>Fancy</string>
+           </property>
+           <property name="checked">
+            <bool>true</bool>
+           </property>
+           <attribute name="buttonGroup">
+            <string notr="true">textRenderingBtnGroup</string>
+           </attribute>
+          </widget>
+         </item>
+         <item>
+          <widget class="QRadioButton" name="fancypants_off">
+           <property name="text">
+            <string>Always plain text</string>
+           </property>
+           <attribute name="buttonGroup">
+            <string notr="true">textRenderingBtnGroup</string>
+           </attribute>
+          </widget>
+         </item>
+        </layout>
+       </item>
+       <item row="4" column="0">
+        <widget class="QLabel" name="label_18">
+         <property name="text">
+          <string>Enable text highlights</string>
+         </property>
+        </widget>
+       </item>
+       <item row="4" column="1">
+        <layout class="QHBoxLayout" name="horizontalLayout_3">
+         <item>
+          <widget class="QRadioButton" name="texthl_on">
+           <property name="text">
+            <string>On (Experimental)</string>
+           </property>
+           <attribute name="buttonGroup">
+            <string notr="true">textHighlightsBtnGroup</string>
+           </attribute>
+          </widget>
+         </item>
+         <item>
+          <widget class="QRadioButton" name="texthl_off">
+           <property name="text">
+            <string>Off</string>
+           </property>
+           <property name="checked">
+            <bool>true</bool>
+           </property>
+           <attribute name="buttonGroup">
+            <string notr="true">textHighlightsBtnGroup</string>
+           </attribute>
+          </widget>
+         </item>
+        </layout>
+       </item>
+       <item row="5" column="0">
+        <widget class="QLabel" name="label_20">
+         <property name="text">
+          <string>Gopher Map</string>
+         </property>
+        </widget>
+       </item>
+       <item row="5" column="1">
+        <layout class="QHBoxLayout" name="horizontalLayout_4">
+         <item>
+          <widget class="QRadioButton" name="gophermap_icon">
+           <property name="text">
+            <string>Use icons</string>
+           </property>
+           <property name="checked">
+            <bool>true</bool>
+           </property>
+           <attribute name="buttonGroup">
+            <string notr="true">gophermapBtnGroup</string>
+           </attribute>
+          </widget>
+         </item>
+         <item>
+          <widget class="QRadioButton" name="gophermap_text">
+           <property name="text">
+            <string>Use text only</string>
+           </property>
+           <attribute name="buttonGroup">
+            <string notr="true">gophermapBtnGroup</string>
+           </attribute>
+          </widget>
+         </item>
+        </layout>
+       </item>
+       <item row="6" column="0">
+        <widget class="QLabel" name="label_22">
+         <property name="text">
+          <string>Unknown Scheme</string>
+         </property>
+        </widget>
+       </item>
+       <item row="6" column="1">
+        <layout class="QHBoxLayout" name="horizontalLayout_7">
+         <item>
+          <widget class="QRadioButton" name="scheme_os_default">
+           <property name="text">
+            <string>Use OS default handler</string>
+           </property>
+           <attribute name="buttonGroup">
+            <string notr="true">buttonGroup</string>
+           </attribute>
+          </widget>
+         </item>
+         <item>
+          <widget class="QRadioButton" name="scheme_error">
+           <property name="text">
+            <string>Display error message</string>
+           </property>
+           <attribute name="buttonGroup">
+            <string notr="true">buttonGroup</string>
+           </attribute>
+          </widget>
+         </item>
+        </layout>
+       </item>
+       <item row="7" column="0">
+        <widget class="QLabel" name="label_26">
+         <property name="text">
+          <string>Max. Number of Redirections</string>
+         </property>
+        </widget>
+       </item>
+       <item row="7" column="1">
+        <widget class="QSpinBox" name="max_redirects">
+         <property name="value">
+          <number>5</number>
+         </property>
+        </widget>
+       </item>
+       <item row="8" column="0">
+        <widget class="QLabel" name="label_27">
+         <property name="text">
+          <string>Redirection Handling</string>
+         </property>
+        </widget>
+       </item>
+       <item row="8" column="1">
+        <widget class="QComboBox" name="redirection_mode"/>
+       </item>
+       <item row="9" column="0">
+        <widget class="QLabel" name="label_28">
+         <property name="text">
+          <string>Network Timeout</string>
+         </property>
+        </widget>
+       </item>
+       <item row="9" column="1">
+        <widget class="QSpinBox" name="network_timeout">
+         <property name="suffix">
+          <string> ms</string>
+         </property>
+         <property name="minimum">
+          <number>100</number>
+         </property>
+         <property name="maximum">
+          <number>90000</number>
+         </property>
+        </widget>
+       </item>
+      </layout>
+     </widget>
+     <widget class="QWidget" name="style_tab">
+      <attribute name="icon">
+       <iconset theme="palette">
+        <normaloff>.</normaloff>.</iconset>
+      </attribute>
+      <attribute name="title">
+       <string>Style</string>
+      </attribute>
+      <layout class="QHBoxLayout" name="horizontalLayout_23">
+       <item>
+        <layout class="QFormLayout" name="formLayout_3">
+         <property name="leftMargin">
+          <number>5</number>
+         </property>
+         <item row="0" column="1">
+          <layout class="QHBoxLayout" name="horizontalLayout_13">
+           <item>
+            <widget class="QLabel" name="bg_preview">
+             <property name="text">
+              <string/>
+             </property>
+             <property name="textFormat">
+              <enum>Qt::PlainText</enum>
+             </property>
+            </widget>
+           </item>
+           <item>
+            <widget class="QToolButton" name="bg_change_color">
+             <property name="text">
+              <string/>
+             </property>
+             <property name="icon">
+              <iconset theme="palette">
+               <normaloff>.</normaloff>.</iconset>
+             </property>
+            </widget>
+           </item>
+          </layout>
+         </item>
+         <item row="0" column="0">
+          <widget class="QLabel" name="label_2">
+           <property name="text">
+            <string>Background Color</string>
+           </property>
+          </widget>
+         </item>
+         <item row="1" column="0">
+          <widget class="QLabel" name="label">
+           <property name="text">
+            <string>Standard Font</string>
+           </property>
+          </widget>
+         </item>
+         <item row="1" column="1">
+          <layout class="QHBoxLayout" name="horizontalLayout_14">
+           <item>
+            <widget class="QLabel" name="std_preview">
+             <property name="frameShape">
+              <enum>QFrame::NoFrame</enum>
+             </property>
+             <property name="text">
+              <string>This text will be displayed for normal text.</string>
+             </property>
+            </widget>
+           </item>
+           <item>
+            <widget class="QToolButton" name="std_change_font">
+             <property name="text">
+              <string/>
+             </property>
+             <property name="icon">
+              <iconset theme="font">
+               <normaloff>.</normaloff>.</iconset>
+             </property>
+            </widget>
+           </item>
+           <item>
+            <widget class="QToolButton" name="std_change_color">
+             <property name="text">
+              <string/>
+             </property>
+             <property name="icon">
+              <iconset theme="palette">
+               <normaloff>.</normaloff>.</iconset>
+             </property>
+            </widget>
+           </item>
+          </layout>
+         </item>
+         <item row="2" column="0">
+          <widget class="QLabel" name="label_3">
+           <property name="text">
+            <string>Preformatted Font</string>
+           </property>
+          </widget>
+         </item>
+         <item row="2" column="1">
+          <layout class="QHBoxLayout" name="horizontalLayout_15">
+           <item>
+            <widget class="QLabel" name="pre_preview">
+             <property name="frameShape">
+              <enum>QFrame::NoFrame</enum>
+             </property>
+             <property name="text">
+              <string>This text will be displayed for preformatted text.</string>
+             </property>
+            </widget>
+           </item>
+           <item>
+            <widget class="QToolButton" name="pre_change_font">
+             <property name="text">
+              <string/>
+             </property>
+             <property name="icon">
+              <iconset theme="font">
+               <normaloff>.</normaloff>.</iconset>
+             </property>
+            </widget>
+           </item>
+           <item>
+            <widget class="QToolButton" name="pre_change_color">
+             <property name="text">
+              <string/>
+             </property>
+             <property name="icon">
+              <iconset theme="palette">
+               <normaloff>.</normaloff>.</iconset>
+             </property>
+            </widget>
+           </item>
+          </layout>
+         </item>
+         <item row="3" column="0">
+          <widget class="QLabel" name="label_4">
+           <property name="text">
+            <string>H1 Font</string>
+           </property>
+          </widget>
+         </item>
+         <item row="3" column="1">
+          <layout class="QHBoxLayout" name="horizontalLayout_16">
+           <item>
+            <widget class="QLabel" name="h1_preview">
+             <property name="frameShape">
+              <enum>QFrame::NoFrame</enum>
+             </property>
+             <property name="text">
+              <string>This text will be displayed for a level 1 heading.</string>
+             </property>
+            </widget>
+           </item>
+           <item>
+            <widget class="QToolButton" name="h1_change_font">
+             <property name="text">
+              <string/>
+             </property>
+             <property name="icon">
+              <iconset theme="font">
+               <normaloff>.</normaloff>.</iconset>
+             </property>
+            </widget>
+           </item>
+           <item>
+            <widget class="QToolButton" name="h1_change_color">
+             <property name="text">
+              <string/>
+             </property>
+             <property name="icon">
+              <iconset theme="palette">
+               <normaloff>.</normaloff>.</iconset>
+             </property>
+            </widget>
+           </item>
+          </layout>
+         </item>
+         <item row="4" column="0">
+          <widget class="QLabel" name="label_5">
+           <property name="text">
+            <string>H2 Font</string>
+           </property>
+          </widget>
+         </item>
+         <item row="4" column="1">
+          <layout class="QHBoxLayout" name="horizontalLayout_18">
+           <item>
+            <widget class="QLabel" name="h2_preview">
+             <property name="frameShape">
+              <enum>QFrame::NoFrame</enum>
+             </property>
+             <property name="text">
+              <string>This text will be displayed for a level 2 heading.</string>
+             </property>
+            </widget>
+           </item>
+           <item>
+            <widget class="QToolButton" name="h2_change_font">
+             <property name="text">
+              <string/>
+             </property>
+             <property name="icon">
+              <iconset theme="font">
+               <normaloff>.</normaloff>.</iconset>
+             </property>
+            </widget>
+           </item>
+           <item>
+            <widget class="QToolButton" name="h2_change_color">
+             <property name="text">
+              <string/>
+             </property>
+             <property name="icon">
+              <iconset theme="palette">
+               <normaloff>.</normaloff>.</iconset>
+             </property>
+            </widget>
+           </item>
+          </layout>
+         </item>
+         <item row="5" column="0">
+          <widget class="QLabel" name="label_6">
+           <property name="text">
+            <string>H3 Font</string>
+           </property>
+          </widget>
+         </item>
+         <item row="5" column="1">
+          <layout class="QHBoxLayout" name="horizontalLayout_19">
+           <item>
+            <widget class="QLabel" name="h3_preview">
+             <property name="styleSheet">
+              <string notr="true">border: 1px solid black;</string>
+             </property>
+             <property name="frameShape">
+              <enum>QFrame::NoFrame</enum>
+             </property>
+             <property name="text">
+              <string>This text will be displayed for a level 3 heading.</string>
+             </property>
+             <property name="textFormat">
+              <enum>Qt::PlainText</enum>
+             </property>
+            </widget>
+           </item>
+           <item>
+            <widget class="QToolButton" name="h3_change_font">
+             <property name="text">
+              <string/>
+             </property>
+             <property name="icon">
+              <iconset theme="font">
+               <normaloff>.</normaloff>.</iconset>
+             </property>
+            </widget>
+           </item>
+           <item>
+            <widget class="QToolButton" name="h3_change_color">
+             <property name="text">
+              <string/>
+             </property>
+             <property name="icon">
+              <iconset theme="palette">
+               <normaloff>.</normaloff>.</iconset>
+             </property>
+            </widget>
+           </item>
+          </layout>
+         </item>
+         <item row="6" column="0">
+          <widget class="QLabel" name="label_7">
+           <property name="text">
+            <string>Local Link Color</string>
+           </property>
+          </widget>
+         </item>
+         <item row="7" column="0">
+          <widget class="QLabel" name="label_8">
+           <property name="text">
+            <string>Foreign Link Color</string>
+           </property>
+          </widget>
+         </item>
+         <item row="8" column="0">
+          <widget class="QLabel" name="label_9">
+           <property name="text">
+            <string>Cross-Scheme-Color</string>
+           </property>
+          </widget>
+         </item>
+         <item row="9" column="0">
+          <widget class="QLabel" name="label_10">
+           <property name="text">
+            <string>Local Link Prefix</string>
+           </property>
+          </widget>
+         </item>
+         <item row="10" column="0">
+          <widget class="QLabel" name="label_11">
+           <property name="text">
+            <string>Extern Link Prefix</string>
+           </property>
+          </widget>
+         </item>
+         <item row="10" column="1">
+          <widget class="QLineEdit" name="link_foreign_prefix">
+           <property name="text">
+            <string>⇒ </string>
+           </property>
+          </widget>
+         </item>
+         <item row="9" column="1">
+          <widget class="QLineEdit" name="link_local_prefix">
+           <property name="text">
+            <string>→ </string>
+           </property>
+          </widget>
+         </item>
+         <item row="6" column="1">
+          <layout class="QHBoxLayout" name="horizontalLayout_20">
+           <item>
+            <widget class="QLabel" name="link_local_preview">
+             <property name="text">
+              <string>This is a local reference</string>
+             </property>
+             <property name="textFormat">
+              <enum>Qt::PlainText</enum>
+             </property>
+            </widget>
+           </item>
+           <item>
+            <widget class="QToolButton" name="link_local_change_color">
+             <property name="text">
+              <string/>
+             </property>
+             <property name="icon">
+              <iconset theme="palette">
+               <normaloff>.</normaloff>.</iconset>
+             </property>
+            </widget>
+           </item>
+          </layout>
+         </item>
+         <item row="7" column="1">
+          <layout class="QHBoxLayout" name="horizontalLayout_21">
+           <item>
+            <widget class="QLabel" name="link_foreign_preview">
+             <property name="text">
+              <string>This is a foreign reference</string>
+             </property>
+             <property name="textFormat">
+              <enum>Qt::PlainText</enum>
+             </property>
+            </widget>
+           </item>
+           <item>
+            <widget class="QToolButton" name="link_foreign_change_color">
+             <property name="text">
+              <string/>
+             </property>
+             <property name="icon">
+              <iconset theme="palette">
+               <normaloff>.</normaloff>.</iconset>
+             </property>
+            </widget>
+           </item>
+          </layout>
+         </item>
+         <item row="8" column="1">
+          <layout class="QHBoxLayout" name="horizontalLayout_22">
+           <item>
+            <widget class="QLabel" name="link_cross_preview">
+             <property name="text">
+              <string>This reference is cross-scheme</string>
+             </property>
+             <property name="textFormat">
+              <enum>Qt::PlainText</enum>
+             </property>
+            </widget>
+           </item>
+           <item>
+            <widget class="QToolButton" name="link_cross_change_color">
+             <property name="text">
+              <string/>
+             </property>
+             <property name="icon">
+              <iconset theme="palette">
+               <normaloff>.</normaloff>.</iconset>
+             </property>
+            </widget>
+           </item>
+          </layout>
+         </item>
+         <item row="12" column="0">
+          <widget class="QLabel" name="label_12">
+           <property name="text">
+            <string>Auto-Theme Generation</string>
+           </property>
+          </widget>
+         </item>
+         <item row="12" column="1">
+          <widget class="QComboBox" name="auto_theme"/>
+         </item>
+         <item row="13" column="0">
+          <widget class="QLabel" name="label_13">
+           <property name="text">
+            <string>Page Margin</string>
+           </property>
+          </widget>
+         </item>
+         <item row="13" column="1">
+          <widget class="QDoubleSpinBox" name="page_margin">
+           <property name="suffix">
+            <string> px</string>
+           </property>
+           <property name="decimals">
+            <number>0</number>
+           </property>
+           <property name="maximum">
+            <double>350.000000000000000</double>
+           </property>
+          </widget>
+         </item>
+         <item row="14" column="1">
+          <layout class="QHBoxLayout" name="horizontalLayout_2">
+           <item>
+            <widget class="QComboBox" name="presets"/>
+           </item>
+           <item>
+            <widget class="QToolButton" name="preset_new">
+             <property name="toolTip">
+              <string>Save as new preset</string>
+             </property>
+             <property name="text">
+              <string>...</string>
+             </property>
+             <property name="icon">
+              <iconset theme="create-new">
+               <normaloff>.</normaloff>.</iconset>
+             </property>
+            </widget>
+           </item>
+           <item>
+            <widget class="QToolButton" name="preset_save">
+             <property name="toolTip">
+              <string>Override current preset</string>
+             </property>
+             <property name="text">
+              <string>...</string>
+             </property>
+             <property name="icon">
+              <iconset theme="save">
+               <normaloff>.</normaloff>.</iconset>
+             </property>
+            </widget>
+           </item>
+           <item>
+            <widget class="QToolButton" name="preset_load">
+             <property name="toolTip">
+              <string>Load preset</string>
+             </property>
+             <property name="text">
+              <string>...</string>
+             </property>
+             <property name="icon">
+              <iconset theme="folder">
+               <normaloff>.</normaloff>.</iconset>
+             </property>
+            </widget>
+           </item>
+           <item>
+            <widget class="QToolButton" name="preset_import">
+             <property name="toolTip">
+              <string>Imports preset…</string>
+             </property>
+             <property name="toolTipDuration">
+              <number>-1</number>
+             </property>
+             <property name="text">
+              <string>...</string>
+             </property>
+             <property name="icon">
+              <iconset theme="save-import">
+               <normaloff>.</normaloff>.</iconset>
+             </property>
+            </widget>
+           </item>
+           <item>
+            <widget class="QToolButton" name="preset_export">
+             <property name="toolTip">
+              <string>Export preset…</string>
+             </property>
+             <property name="text">
+              <string>...</string>
+             </property>
+             <property name="icon">
+              <iconset theme="save-export">
+               <normaloff>.</normaloff>.</iconset>
+             </property>
+            </widget>
+           </item>
+          </layout>
+         </item>
+         <item row="14" column="0">
+          <widget class="QLabel" name="label_17">
+           <property name="text">
+            <string>Presets</string>
+           </property>
+          </widget>
+         </item>
+         <item row="11" column="0">
+          <widget class="QLabel" name="label_21">
+           <property name="text">
+            <string>Block Quote Background</string>
+           </property>
+          </widget>
+         </item>
+         <item row="11" column="1">
+          <layout class="QHBoxLayout" name="horizontalLayout_6">
+           <item>
+            <widget class="QLabel" name="quote_preview">
+             <property name="text">
+              <string/>
+             </property>
+            </widget>
+           </item>
+           <item>
+            <widget class="QToolButton" name="quote_change_color">
+             <property name="text">
+              <string>...</string>
+             </property>
+             <property name="icon">
+              <iconset theme="palette">
+               <normaloff>.</normaloff>.</iconset>
+             </property>
+            </widget>
+           </item>
+          </layout>
+         </item>
+        </layout>
+       </item>
+       <item>
+        <layout class="QVBoxLayout" name="verticalLayout_2">
+         <item>
+          <widget class="QTextBrowser" name="style_preview">
+           <property name="openLinks">
+            <bool>false</bool>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <widget class="QLineEdit" name="preview_url">
+           <property name="placeholderText">
+            <string>host.name</string>
+           </property>
+          </widget>
+         </item>
+        </layout>
+       </item>
+      </layout>
+     </widget>
+     <widget class="QWidget" name="gem_trust_page">
+      <attribute name="icon">
+       <iconset theme="certificate">
+        <normaloff>.</normaloff>.</iconset>
+      </attribute>
+      <attribute name="title">
+       <string>Gemini TLS</string>
+      </attribute>
+      <layout class="QVBoxLayout" name="verticalLayout_3">
+       <item>
+        <widget class="SslTrustEditor" name="gemini_trust_editor" native="true"/>
+       </item>
+      </layout>
+     </widget>
+     <widget class="QWidget" name="https_trust">
+      <attribute name="icon">
+       <iconset theme="certificate">
+        <normaloff>.</normaloff>.</iconset>
+      </attribute>
+      <attribute name="title">
+       <string>HTTPS TLS</string>
+      </attribute>
+      <layout class="QVBoxLayout" name="verticalLayout_4">
+       <item>
+        <widget class="SslTrustEditor" name="https_trust_editor" native="true"/>
+       </item>
+      </layout>
+     </widget>
+    </widget>
+   </item>
+   <item>
+    <widget class="QDialogButtonBox" name="buttonBox">
+     <property name="orientation">
+      <enum>Qt::Horizontal</enum>
+     </property>
+     <property name="standardButtons">
+      <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <customwidgets>
+  <customwidget>
+   <class>SslTrustEditor</class>
+   <extends>QWidget</extends>
+   <header>widgets/ssltrusteditor.hpp</header>
+   <container>1</container>
+  </customwidget>
+ </customwidgets>
+ <resources/>
+ <connections>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>rejected()</signal>
+   <receiver>SettingsDialog</receiver>
+   <slot>reject()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>325</x>
+     <y>470</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>286</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>accepted()</signal>
+   <receiver>SettingsDialog</receiver>
+   <slot>accept()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>257</x>
+     <y>470</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>157</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
+ <buttongroups>
+  <buttongroup name="buttonGroup"/>
+  <buttongroup name="textHighlightsBtnGroup"/>
+  <buttongroup name="gophermapBtnGroup"/>
+  <buttongroup name="textRenderingBtnGroup"/>
+ </buttongroups>
+</ui>