Mostly working source select implementation

src/core/CMakeLists.txt

@@ -323,6 +323,7 @@ set(QGIS_CORE_SRCS
   providers/ogr/qgsogrproviderconnection.cpp
   providers/ogr/qgsogrtransaction.cpp
 
+  providers/sensorthings/qgssensorthingsconnection.cpp
   providers/sensorthings/qgssensorthingsfeatureiterator.cpp
   providers/sensorthings/qgssensorthingsprovider.cpp
   providers/sensorthings/qgssensorthingsshareddata.cpp
@@ -1817,6 +1818,7 @@ set(QGIS_CORE_HDRS
   providers/ogr/qgsogrproviderutils.h
   providers/ogr/qgsogrtransaction.h
 
+  providers/sensorthings/qgssensorthingsconnection.h
   providers/sensorthings/qgssensorthingsfeatureiterator.h
   providers/sensorthings/qgssensorthingsprovider.h
   providers/sensorthings/qgssensorthingsshareddata.h

src/core/providers/sensorthings/qgssensorthingsconnection.cpp

@@ -0,0 +1,75 @@
+/***************************************************************************
+    qgssensorthingsconnection.cpp
+    ---------------------
+    Date                 : December 2023
+    Copyright            : (C) 2023 by Nyall Dawson
+    Email                : nyall dot dawson at gmail dot com
+ ***************************************************************************
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ ***************************************************************************/
+
+#include <qgslogger.h>
+#include "qgssensorthingsconnection.h"
+
+#include "qgsowsconnection.h"
+#include "qgsdatasourceuri.h"
+#include "qgssettingsentryimpl.h"
+
+
+const QgsSettingsEntryString *QgsSensorThingsConnection::settingsUrl = new QgsSettingsEntryString( QStringLiteral( "url" ), sTreeSensorThingsConnections, QString() ) ;
+const QgsSettingsEntryVariantMap *QgsSensorThingsConnection::settingsHeaders = new QgsSettingsEntryVariantMap( QStringLiteral( "http-header" ), sTreeSensorThingsConnections ) ;
+const QgsSettingsEntryString *QgsSensorThingsConnection::settingsUsername = new QgsSettingsEntryString( QStringLiteral( "username" ), sTreeSensorThingsConnections ) ;
+const QgsSettingsEntryString *QgsSensorThingsConnection::settingsPassword = new QgsSettingsEntryString( QStringLiteral( "password" ), sTreeSensorThingsConnections ) ;
+const QgsSettingsEntryString *QgsSensorThingsConnection::settingsAuthcfg = new QgsSettingsEntryString( QStringLiteral( "authcfg" ), sTreeSensorThingsConnections ) ;
+
+QString QgsSensorThingsConnection::encodedUri() const
+{
+  QgsDataSourceUri uri;
+  uri.setParam( QStringLiteral( "url" ), url );
+  if ( ! authCfg.isEmpty() )
+    uri.setAuthConfigId( authCfg );
+  if ( ! username.isEmpty() )
+    uri.setUsername( username );
+  if ( ! password.isEmpty() )
+    uri.setPassword( password );
+
+  uri.setHttpHeaders( httpHeaders );
+  return uri.uri( false );
+}
+
+QStringList QgsSensorThingsConnectionUtils::connectionList()
+{
+  return QgsSensorThingsConnection::sTreeSensorThingsConnections->items();
+}
+
+QgsSensorThingsConnection QgsSensorThingsConnectionUtils::connection( const QString &name )
+{
+  QgsSensorThingsConnection conn;
+  conn.name = name;
+  conn.url = QgsSensorThingsConnection::settingsUrl->value( name );
+  conn.authCfg = QgsSensorThingsConnection::settingsAuthcfg->value( name );
+  conn.username = QgsSensorThingsConnection::settingsUsername->value( name );
+  conn.password = QgsSensorThingsConnection::settingsPassword->value( name );
+  conn.httpHeaders = QgsSensorThingsConnection::settingsHeaders->value( name );
+  return conn;
+}
+
+void QgsSensorThingsConnectionUtils::deleteConnection( const QString &name )
+{
+  QgsSensorThingsConnection::sTreeSensorThingsConnections->deleteItem( name );
+}
+
+void QgsSensorThingsConnectionUtils::addConnection( const QgsSensorThingsConnection &conn )
+{
+  QgsSensorThingsConnection::settingsUrl->setValue( conn.url, conn.name );
+  QgsSensorThingsConnection::settingsAuthcfg->setValue( conn.authCfg, conn.name );
+  QgsSensorThingsConnection::settingsUsername->setValue( conn.username, conn.name );
+  QgsSensorThingsConnection::settingsPassword->setValue( conn.password, conn.name );
+  QgsSensorThingsConnection::settingsHeaders->setValue( conn.httpHeaders.headers(), conn.name );
+}
+

src/core/providers/sensorthings/qgssensorthingsconnection.h

@@ -0,0 +1,83 @@
+/***************************************************************************
+    qgssensorthingsconnection.h
+    ---------------------
+    Date                 : December 2023
+    Copyright            : (C) 2023 by Nyall Dawson
+    Email                : nyall dot dawson at gmail dot com
+ ***************************************************************************
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ ***************************************************************************/
+
+#ifndef QGSSENSORTHINGSCONNECTION_H
+
+#define SIP_NO_FILE
+
+#include <QStringList>
+
+#include "qgshttpheaders.h"
+#include "qgis_core.h"
+#include "qgssettingstree.h"
+
+class QgsSettingsEntryBool;
+class QgsSettingsEntryDouble;
+class QgsSettingsEntryInteger;
+class QgsSettingsEntryString;
+class QgsSettingsEntryVariantMap;
+template<class T> class QgsSettingsEntryEnumFlag;
+
+///@cond PRIVATE
+
+class CORE_EXPORT QgsSensorThingsConnection
+{
+
+  public:
+
+    static inline QgsSettingsTreeNamedListNode *sTreeSensorThingsConnections = QgsSettingsTree::sTreeConnections->createNamedListNode(
+          QStringLiteral( "sensorthings" ), Qgis::SettingsTreeNodeOption::NamedListSelectedItemSetting );
+
+    static const QgsSettingsEntryString *settingsUrl;
+    static const QgsSettingsEntryVariantMap *settingsHeaders;
+    static const QgsSettingsEntryString *settingsUsername;
+    static const QgsSettingsEntryString *settingsPassword;
+    static const QgsSettingsEntryString *settingsAuthcfg;
+
+    QString name;
+    QString url;
+    // Authentication configuration id
+    QString authCfg;
+    // HTTP Basic username
+    QString username;
+    // HTTP Basic password
+    QString password;
+    // http headers
+    QgsHttpHeaders httpHeaders;
+
+    QString encodedUri() const;
+};
+
+//! Utility class for handling list of connections to sensor things layers
+class CORE_EXPORT QgsSensorThingsConnectionUtils
+{
+
+  public:
+    //! Returns list of existing connections, unless the hidden ones
+    static QStringList connectionList();
+
+    //! Returns connection details
+    static QgsSensorThingsConnection connection( const QString &name );
+
+    //! Removes a connection from the list
+    static void deleteConnection( const QString &name );
+
+    //! Adds a new connection to the list
+    static void addConnection( const QgsSensorThingsConnection &conn );
+};
+
+///@endcond PRIVATE
+
+#endif // QGSSENSORTHINGSCONNECTION_H

src/core/providers/sensorthings/qgssensorthingsprovider.cpp

@@ -283,6 +283,22 @@ QVariantMap QgsSensorThingsProviderMetadata::decodeUri( const QString &uri ) con
   {
     components.insert( QStringLiteral( "authcfg" ), dsUri.authConfigId() );
   }
+  if ( !dsUri.username().isEmpty() )
+  {
+    components.insert( QStringLiteral( "username" ), dsUri.username() );
+  }
+  if ( !dsUri.password().isEmpty() )
+  {
+    components.insert( QStringLiteral( "password" ), dsUri.password() );
+  }
+  if ( !dsUri.param( QStringLiteral( "referer" ) ).isEmpty() )
+  {
+    components.insert( QStringLiteral( "referer" ), dsUri.param( QStringLiteral( "referer" ) ) );
+  }
+  if ( !dsUri.param( QStringLiteral( "http-header:referer" ) ).isEmpty() )
+  {
+    components.insert( QStringLiteral( "referer" ), dsUri.param( QStringLiteral( "http-header:referer" ) ) );
+  }
 
   const QString entityParam = dsUri.param( QStringLiteral( "entity" ) );
   Qgis::SensorThingsEntity entity = QgsSensorThingsUtils::entitySetStringToEntity( entityParam );
@@ -331,6 +347,18 @@ QString QgsSensorThingsProviderMetadata::encodeUri( const QVariantMap &parts ) c
   {
     dsUri.setAuthConfigId( parts.value( QStringLiteral( "authcfg" ) ).toString() );
   }
+  if ( !parts.value( QStringLiteral( "username" ) ).toString().isEmpty() )
+  {
+    dsUri.setUsername( parts.value( QStringLiteral( "username" ) ).toString() );
+  }
+  if ( !parts.value( QStringLiteral( "password" ) ).toString().isEmpty() )
+  {
+    dsUri.setPassword( parts.value( QStringLiteral( "password" ) ).toString() );
+  }
+  if ( !parts.value( QStringLiteral( "referer" ) ).toString().isEmpty() )
+  {
+    dsUri.setParam( QStringLiteral( "referer" ), parts.value( QStringLiteral( "referer" ) ).toString() );
+  }
 
   Qgis::SensorThingsEntity entity = QgsSensorThingsUtils::entitySetStringToEntity(
                                       parts.value( QStringLiteral( "entity" ) ).toString() );

src/gui/CMakeLists.txt

@@ -457,7 +457,10 @@ set(QGIS_GUI_SRCS
   providers/ogr/qgsogritemguiprovider.cpp
   providers/ogr/qgsgeopackageprojectstorageguiprovider.cpp
 
+  providers/sensorthings/qgssensorthingsconnectiondialog.cpp
+  providers/sensorthings/qgssensorthingsconnectionwidget.cpp
   providers/sensorthings/qgssensorthingsguiprovider.cpp
+  providers/sensorthings/qgssensorthingssourceselect.cpp
   providers/sensorthings/qgssensorthingssourcewidget.cpp
 
   providers/vtpkvectortiles/qgsvtpkvectortileguiprovider.cpp
@@ -1414,7 +1417,10 @@ set(QGIS_GUI_HDRS
   providers/ogr/qgsogritemguiprovider.h
   providers/ogr/qgsogrsourceselect.h
 
+  providers/sensorthings/qgssensorthingsconnectiondialog.h
+  providers/sensorthings/qgssensorthingsconnectionwidget.h
   providers/sensorthings/qgssensorthingsguiprovider.h
+  providers/sensorthings/qgssensorthingssourceselect.h
   providers/sensorthings/qgssensorthingssourcewidget.h
 
   providers/vtpkvectortiles/qgsvtpkvectortileguiprovider.h

src/gui/providers/sensorthings/qgssensorthingsconnectiondialog.cpp

@@ -0,0 +1,82 @@
+/***************************************************************************
+    qgssensorthingsconnectiondialog.cpp
+    ---------------------
+    Date                 : December 2023
+    Copyright            : (C) 2023 by Nyall Dawson
+    Email                : nyall dot dawson at gmail dot com
+ ***************************************************************************
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ ***************************************************************************/
+
+#include "qgssensorthingsconnectiondialog.h"
+#include "qgssensorthingsconnection.h"
+#include "qgsgui.h"
+#include "qgshelp.h"
+#include "qgssensorthingsconnectionwidget.h"
+
+#include <QPushButton>
+#include <QMessageBox>
+
+///@cond PRIVATE
+
+QgsSensorThingsConnectionDialog::QgsSensorThingsConnectionDialog( QWidget *parent )
+  : QDialog( parent )
+{
+  setupUi( this );
+  QgsGui::enableAutoGeometryRestore( this );
+
+  mConnectionWidget = new QgsSensorThingsConnectionWidget();
+  QHBoxLayout *hlayout = new QHBoxLayout();
+  hlayout->addWidget( mConnectionWidget );
+  mConnectionGroupBox->setLayout( hlayout );
+
+  buttonBox->button( QDialogButtonBox::Ok )->setDisabled( true );
+  connect( buttonBox, &QDialogButtonBox::helpRequested, this,  [ = ]
+  {
+    QgsHelp::openHelp( QStringLiteral( "managing_data_source/opening_data.html" ) );
+  } );
+  connect( mEditName, &QLineEdit::textChanged, this, &QgsSensorThingsConnectionDialog::updateOkButtonState );
+  connect( mConnectionWidget, &QgsSensorThingsConnectionWidget::validChanged, this, &QgsSensorThingsConnectionDialog::updateOkButtonState );
+}
+
+void QgsSensorThingsConnectionDialog::setConnection( const QgsSensorThingsConnection &conn )
+{
+  mEditName->setText( conn.name );
+  mConnectionWidget->setUrl( conn.url );
+  mConnectionWidget->setUsername( conn.username );
+  mConnectionWidget->setPassword( conn.password );
+  mConnectionWidget->setReferer( conn.httpHeaders[QgsHttpHeaders::KEY_REFERER].toString() );
+  mConnectionWidget->setAuthCfg( conn.authCfg );
+}
+
+QgsSensorThingsConnection QgsSensorThingsConnectionDialog::connection() const
+{
+  QgsSensorThingsConnection conn;
+  conn.name = mEditName->text();
+  conn.url = mConnectionWidget->url();
+  conn.username = mConnectionWidget->username();
+  conn.password = mConnectionWidget->password();
+  if ( !mConnectionWidget->referer().isEmpty() )
+    conn.httpHeaders[QgsHttpHeaders::KEY_REFERER] = mConnectionWidget->referer();
+  conn.authCfg = mConnectionWidget->authcfg( );
+  return conn;
+}
+
+void QgsSensorThingsConnectionDialog::updateOkButtonState()
+{
+  const bool enabled = !mEditName->text().isEmpty() && !mConnectionWidget->url().isEmpty();
+  buttonBox->button( QDialogButtonBox::Ok )->setEnabled( enabled );
+}
+
+void QgsSensorThingsConnectionDialog::accept()
+{
+  // validate here if required
+  QDialog::accept();
+}
+
+///@endcond PRIVATE

src/gui/providers/sensorthings/qgssensorthingsconnectiondialog.h

@@ -0,0 +1,57 @@
+/***************************************************************************
+    qgssensorthingsconnectiondialog.h
+    ---------------------
+    Date                 : December 2023
+    Copyright            : (C) 2023 by Nyall Dawson
+    Email                : nyall dot dawson at gmail dot com
+ ***************************************************************************
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ ***************************************************************************/
+
+#ifndef QGSSENSORTHINGSCONNECTIONDIALOG_H
+#define QGSSENSORTHINGSCONNECTIONDIALOG_H
+
+///@cond PRIVATE
+#define SIP_NO_FILE
+
+#include <QDialog>
+
+#include "ui_qgssensorthingsconnectiondialog.h"
+
+
+struct QgsSensorThingsConnection;
+
+class QgsSensorThingsConnectionWidget;
+
+class QgsSensorThingsConnectionDialog : public QDialog, public Ui::QgsSensorThingsConnectionDialog
+{
+    Q_OBJECT
+  public:
+    explicit QgsSensorThingsConnectionDialog( QWidget *parent = nullptr );
+
+    void setConnection( const QgsSensorThingsConnection &conn );
+
+    QgsSensorThingsConnection connection() const;
+
+    QgsSensorThingsConnectionWidget *connectionWidget() { return mConnectionWidget; }
+
+    void accept() override;
+
+  private slots:
+    //! Updates state of the OK button depending of the filled fields
+    void updateOkButtonState();
+
+  private:
+    QString mBaseKey;
+    QString mCredentialsBaseKey;
+
+    QgsSensorThingsConnectionWidget *mConnectionWidget = nullptr;
+};
+
+///@endcond PRIVATE
+#endif // QGSSENSORTHINGSCONNECTIONDIALOG_H

src/gui/providers/sensorthings/qgssensorthingsconnectionwidget.cpp

@@ -0,0 +1,137 @@
+/***************************************************************************
+    qgssensorthingsconnectionwidget.cpp
+     --------------------------------------
+    Date                 : December 2023
+    Copyright            : (C) 2023 by Nyall Dawson
+    Email                : nyall dot dawson at gmail dot com
+ ***************************************************************************/
+
+/***************************************************************************
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ ***************************************************************************/
+
+#include "qgssensorthingsconnectionwidget.h"
+#include "qgsproviderregistry.h"
+#include "qgssensorthingsprovider.h"
+
+///@cond PRIVATE
+QgsSensorThingsConnectionWidget::QgsSensorThingsConnectionWidget( QWidget *parent )
+  : QWidget( parent )
+{
+  setupUi( this );
+
+  connect( mEditUrl, &QLineEdit::textChanged, this, &QgsSensorThingsConnectionWidget::validate );
+  connect( mEditUrl, &QLineEdit::textChanged, this, &QgsSensorThingsConnectionWidget::changed );
+
+  connect( mAuthSettings, &QgsAuthSettingsWidget::configIdChanged, this, &QgsSensorThingsConnectionWidget::changed );
+  connect( mAuthSettings, &QgsAuthSettingsWidget::usernameChanged, this, &QgsSensorThingsConnectionWidget::changed );
+  connect( mAuthSettings, &QgsAuthSettingsWidget::passwordChanged, this, &QgsSensorThingsConnectionWidget::changed );
+  connect( mEditReferer, &QLineEdit::textChanged, this, &QgsSensorThingsConnectionWidget::changed );
+}
+
+void QgsSensorThingsConnectionWidget::setSourceUri( const QString &uri )
+{
+  mSourceParts = QgsProviderRegistry::instance()->decodeUri( QgsSensorThingsProvider::SENSORTHINGS_PROVIDER_KEY, uri );
+
+  mEditUrl->setText( mSourceParts.value( QStringLiteral( "url" ) ).toString() );
+  mAuthSettings->setUsername( mSourceParts.value( QStringLiteral( "username" ) ).toString() );
+  mAuthSettings->setPassword( mSourceParts.value( QStringLiteral( "password" ) ).toString() );
+  mEditReferer->setText( mSourceParts.value( QStringLiteral( "referer" ) ).toString() );
+
+  mAuthSettings->setConfigId( mSourceParts.value( QStringLiteral( "authcfg" ) ).toString() );
+}
+
+QString QgsSensorThingsConnectionWidget::sourceUri() const
+{
+  QVariantMap parts = mSourceParts;
+
+  parts.insert( QStringLiteral( "url" ), mEditUrl->text() );
+
+  if ( !mAuthSettings->username().isEmpty() )
+    parts.insert( QStringLiteral( "username" ), mAuthSettings->username() );
+  else
+    parts.remove( QStringLiteral( "username" ) );
+  if ( !mAuthSettings->password().isEmpty() )
+    parts.insert( QStringLiteral( "password" ), mAuthSettings->password() );
+  else
+    parts.remove( QStringLiteral( "password" ) );
+
+  if ( !mEditReferer->text().isEmpty() )
+    parts.insert( QStringLiteral( "referer" ), mEditReferer->text() );
+  else
+    parts.remove( QStringLiteral( "referer" ) );
+
+  if ( !mAuthSettings->configId().isEmpty() )
+    parts.insert( QStringLiteral( "authcfg" ), mAuthSettings->configId() );
+  else
+    parts.remove( QStringLiteral( "authcfg" ) );
+
+  return QgsProviderRegistry::instance()->encodeUri( QgsSensorThingsProvider::SENSORTHINGS_PROVIDER_KEY, parts );
+}
+
+void QgsSensorThingsConnectionWidget::setUrl( const QString &url )
+{
+  mEditUrl->setText( url );
+}
+
+QString QgsSensorThingsConnectionWidget::url() const
+{
+  return mEditUrl->text();
+}
+
+void QgsSensorThingsConnectionWidget::setUsername( const QString &username )
+{
+  mAuthSettings->setUsername( username );
+}
+
+void QgsSensorThingsConnectionWidget::setPassword( const QString &password )
+{
+  mAuthSettings->setPassword( password );
+}
+
+void QgsSensorThingsConnectionWidget::setAuthCfg( const QString &id )
+{
+  mAuthSettings->setConfigId( id );
+}
+
+QString QgsSensorThingsConnectionWidget::username() const
+{
+  return mAuthSettings->username();
+}
+
+QString QgsSensorThingsConnectionWidget::password() const
+{
+  return mAuthSettings->password();
+}
+
+QString QgsSensorThingsConnectionWidget::authcfg() const
+{
+  return mAuthSettings->configId();
+}
+
+void QgsSensorThingsConnectionWidget::setReferer( const QString &referer )
+{
+  mEditReferer->setText( referer );
+}
+
+QString QgsSensorThingsConnectionWidget::referer() const
+{
+  return mEditReferer->text();
+}
+
+void QgsSensorThingsConnectionWidget::validate()
+{
+  const bool valid = !mEditUrl->text().isEmpty();
+  if ( valid == mIsValid )
+    return;
+
+  mIsValid = valid;
+  emit validChanged( mIsValid );
+}
+
+///@endcond PRIVATE

src/gui/providers/sensorthings/qgssensorthingsconnectionwidget.h

@@ -0,0 +1,68 @@
+/***************************************************************************
+    qgssensorthingsconnectionwidget.h
+     --------------------------------------
+    Date                 : December 2023
+    Copyright            : (C) 2023 by Nyall Dawson
+    Email                : nyall dot dawson at gmail dot com
+ ***************************************************************************/
+
+/***************************************************************************
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ ***************************************************************************/
+#ifndef QGSSENSORTHINGSCONNECTIONWIDGET_H
+#define QGSSENSORTHINGSCONNECTIONWIDGET_H
+
+#include "ui_qgssensorthingsconnectionwidgetbase.h"
+#include <QVariantMap>
+
+#define SIP_NO_FILE
+///@cond PRIVATE
+
+class QgsSensorThingsConnectionWidget : public QWidget, private Ui::QgsSensorThingsConnectionWidgetBase
+{
+    Q_OBJECT
+
+  public:
+    QgsSensorThingsConnectionWidget( QWidget *parent = nullptr );
+
+    void setSourceUri( const QString &uri );
+    QString sourceUri() const;
+
+    void setUrl( const QString &url );
+    QString url() const;
+
+    void setUsername( const QString &username );
+    void setPassword( const QString &password );
+    void setAuthCfg( const QString &id );
+
+    QString username() const;
+    QString password() const;
+    QString authcfg() const;
+
+    void setReferer( const QString &referer );
+    QString referer() const;
+
+    bool isValid() const { return mIsValid; }
+
+  signals:
+
+    void changed();
+    void validChanged( bool valid );
+
+  private slots:
+
+    void validate();
+
+  private:
+
+    QVariantMap mSourceParts;
+    bool mIsValid = false;
+};
+
+///@endcond PRIVATE
+#endif // QGSSENSORTHINGSCONNECTIONWIDGET_H

src/gui/providers/sensorthings/qgssensorthingsguiprovider.cpp

@@ -25,8 +25,34 @@
 #include <QMessageBox>
 
 #include "qgsmaplayer.h"
+#include "qgssensorthingssourceselect.h"
 #include "qgssensorthingssourcewidget.h"
 #include "qgssensorthingsprovider.h"
+#include "qgsapplication.h"
+
+//
+// QgsSensorThingsSourceSelectProvider
+//
+
+QString QgsSensorThingsSourceSelectProvider::providerKey() const
+{
+  return QgsSensorThingsProvider::SENSORTHINGS_PROVIDER_KEY;
+}
+
+QString QgsSensorThingsSourceSelectProvider::text() const
+{
+  return QObject::tr( "SensorThings" );
+}
+
+QIcon QgsSensorThingsSourceSelectProvider::icon() const
+{
+  return QgsApplication::getThemeIcon( QStringLiteral( "/mActionAddXyzLayer.svg" ) );
+}
+
+QgsAbstractDataSourceWidget *QgsSensorThingsSourceSelectProvider::createDataSourceWidget( QWidget *parent, Qt::WindowFlags fl, QgsProviderRegistry::WidgetMode widgetMode ) const
+{
+  return new QgsSensorThingsSourceSelect( parent, fl, widgetMode );
+}
 
 
 //
@@ -65,11 +91,14 @@ QgsSensorThingsProviderGuiMetadata::QgsSensorThingsProviderGuiMetadata():
 {
 }
 
+QList<QgsSourceSelectProvider *> QgsSensorThingsProviderGuiMetadata::sourceSelectProviders()
+{
+  return { new QgsSensorThingsSourceSelectProvider };
+}
+
 QList<QgsProviderSourceWidgetProvider *> QgsSensorThingsProviderGuiMetadata::sourceWidgetProviders()
 {
-  QList<QgsProviderSourceWidgetProvider *> providers;
-  providers << new QgsSensorThingsSourceWidgetProvider();
-  return providers;
+  return { new QgsSensorThingsSourceWidgetProvider() };
 }
 
 ///@endcond

src/gui/providers/sensorthings/qgssensorthingsguiprovider.h

@@ -20,11 +20,23 @@
 #define QGSSENSORTHINGSGUIPROVIDER_H
 
 #include "qgsproviderguimetadata.h"
+#include "qgssourceselectprovider.h"
 #include "qgsprovidersourcewidgetprovider.h"
 
 ///@cond PRIVATE
 #define SIP_NO_FILE
 
+class QgsSensorThingsSourceSelectProvider : public QgsSourceSelectProvider
+{
+  public:
+
+    QString providerKey() const override;
+    QString text() const override;
+    int ordering() const override { return QgsSourceSelectProvider::OrderRemoteProvider + 40; }
+    QIcon icon() const override;
+    QgsAbstractDataSourceWidget *createDataSourceWidget( QWidget *parent = nullptr, Qt::WindowFlags fl = Qt::Widget, QgsProviderRegistry::WidgetMode widgetMode = QgsProviderRegistry::WidgetMode::Embedded ) const override;
+};
+
 class QgsSensorThingsSourceWidgetProvider : public QgsProviderSourceWidgetProvider
 {
   public:
@@ -38,6 +50,7 @@ class QgsSensorThingsProviderGuiMetadata: public QgsProviderGuiMetadata
 {
   public:
     QgsSensorThingsProviderGuiMetadata();
+    QList<QgsSourceSelectProvider *> sourceSelectProviders() override;
     QList<QgsProviderSourceWidgetProvider *> sourceWidgetProviders() override;
 };
 

src/gui/providers/sensorthings/qgssensorthingssourceselect.cpp

@@ -0,0 +1,228 @@
+/***************************************************************************
+                         qgssensorthingssourceselect.cpp
+                         ---------------------------------
+    Date                 : December 2023
+    Copyright            : (C) 2023 by Nyall Dawson
+    Email                : nyall dot dawson at gmail dot com
+ ***************************************************************************/
+
+/***************************************************************************
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ ***************************************************************************/
+
+#include "qgshelp.h"
+#include "qgsgui.h"
+#include "qgsmanageconnectionsdialog.h"
+#include "qgssensorthingssourceselect.h"
+#include "qgssensorthingsconnection.h"
+#include "qgssensorthingsconnectionwidget.h"
+#include "qgssensorthingsconnectiondialog.h"
+#include "qgsowsconnection.h"
+#include "qgssensorthingssourcewidget.h"
+#include "qgssensorthingsprovider.h"
+
+#include <QFileDialog>
+#include <QMessageBox>
+#include <QPushButton>
+
+///@cond PRIVATE
+
+QgsSensorThingsSourceSelect::QgsSensorThingsSourceSelect( QWidget *parent, Qt::WindowFlags fl, QgsProviderRegistry::WidgetMode theWidgetMode )
+  : QgsAbstractDataSourceWidget( parent, fl, theWidgetMode )
+{
+  setupUi( this );
+
+  setWindowTitle( tr( "Add SensorThings Layer" ) );
+  mConnectionsGroupBox->setTitle( tr( "SensorThings Connections" ) );
+
+  mConnectionWidget = new QgsSensorThingsConnectionWidget();
+  QVBoxLayout *vlayout = new QVBoxLayout();
+  vlayout->setContentsMargins( 0, 0, 0, 0 );
+  vlayout->addWidget( mConnectionWidget );
+  mConnectionContainerWidget->setLayout( vlayout );
+
+  mSourceWidget = new QgsSensorThingsSourceWidget();
+  vlayout = new QVBoxLayout();
+  vlayout->setContentsMargins( 0, 0, 0, 0 );
+  vlayout->addWidget( mSourceWidget );
+  mLayerSettingsContainerWidget->setLayout( vlayout );
+
+  connect( mSourceWidget, &QgsProviderSourceWidget::validChanged, this, &QgsSensorThingsSourceSelect::validate );
+  connect( mConnectionWidget, &QgsSensorThingsConnectionWidget::validChanged, this, &QgsSensorThingsSourceSelect::validate );
+
+  connect( mConnectionWidget, &QgsSensorThingsConnectionWidget::changed, this, [this]
+  {
+    if ( mBlockChanges )
+      return;
+
+    mBlockChanges++;
+    cmbConnections->setCurrentIndex( cmbConnections->findData( QStringLiteral( "~~custom~~" ) ) );
+    mBlockChanges--;
+  } );
+
+  QgsGui::enableAutoGeometryRestore( this );
+
+  connect( btnNew, &QPushButton::clicked, this, &QgsSensorThingsSourceSelect::btnNew_clicked );
+  connect( btnEdit, &QPushButton::clicked, this, &QgsSensorThingsSourceSelect::btnEdit_clicked );
+  connect( btnDelete, &QPushButton::clicked, this, &QgsSensorThingsSourceSelect::btnDelete_clicked );
+  connect( btnSave, &QPushButton::clicked, this, &QgsSensorThingsSourceSelect::btnSave_clicked );
+  connect( btnLoad, &QPushButton::clicked, this, &QgsSensorThingsSourceSelect::btnLoad_clicked );
+  connect( cmbConnections, &QComboBox::currentTextChanged, this, &QgsSensorThingsSourceSelect::cmbConnections_currentTextChanged );
+#if 0 // TODO when documentation page is available
+  connect( buttonBox, &QDialogButtonBox::helpRequested, this, &QgsSensorThingsSourceSelect::showHelp );
+#endif
+  setupButtons( buttonBox );
+  populateConnectionList();
+}
+
+void QgsSensorThingsSourceSelect::btnNew_clicked()
+{
+  const bool isCustom = cmbConnections->currentData().toString() == QLatin1String( "~~custom~~" );
+  QgsSensorThingsConnectionDialog nc( this );
+  if ( isCustom )
+  {
+    // when creating a new connection, default to the current connection parameters
+    nc.connectionWidget()->setSourceUri( mConnectionWidget->sourceUri() );
+  }
+  if ( nc.exec() )
+  {
+    QgsSensorThingsConnectionUtils::addConnection( nc.connection() );
+
+    QgsSensorThingsConnection::sTreeSensorThingsConnections->setSelectedItem( nc.connection().name );
+    populateConnectionList();
+    emit connectionsChanged();
+  }
+}
+
+void QgsSensorThingsSourceSelect::btnEdit_clicked()
+{
+  QgsSensorThingsConnectionDialog nc( this );
+  nc.setConnection( QgsSensorThingsConnectionUtils::connection( cmbConnections->currentText() ) );
+  if ( nc.exec() )
+  {
+    QgsSensorThingsConnectionUtils::addConnection( nc.connection() );
+    populateConnectionList();
+    emit connectionsChanged();
+  }
+}
+
+void QgsSensorThingsSourceSelect::btnDelete_clicked()
+{
+  const QString msg = tr( "Are you sure you want to remove the %1 connection and all associated settings?" )
+                      .arg( cmbConnections->currentText() );
+  if ( QMessageBox::Yes != QMessageBox::question( this, tr( "Confirm Delete" ), msg, QMessageBox::Yes | QMessageBox::No ) )
+    return;
+
+  QgsSensorThingsConnectionUtils::deleteConnection( cmbConnections->currentText() );
+
+  populateConnectionList();
+  emit connectionsChanged();
+}
+
+void QgsSensorThingsSourceSelect::btnSave_clicked()
+{
+#if 0
+  QgsManageConnectionsDialog dlg( this, QgsManageConnectionsDialog::Export, QgsManageConnectionsDialog::XyzTiles );
+  dlg.exec();
+#endif
+}
+
+void QgsSensorThingsSourceSelect::btnLoad_clicked()
+{
+#if 0
+  const QString fileName = QFileDialog::getOpenFileName( this, tr( "Load Connections" ), QDir::homePath(),
+                           tr( "XML files (*.xml *.XML)" ) );
+  if ( fileName.isEmpty() )
+  {
+    return;
+  }
+
+  QgsManageConnectionsDialog dlg( this, QgsManageConnectionsDialog::Import, QgsManageConnectionsDialog::XyzTiles, fileName );
+  dlg.exec();
+  populateConnectionList();
+#endif
+}
+
+void QgsSensorThingsSourceSelect::addButtonClicked()
+{
+  const bool isCustom = cmbConnections->currentData().toString() == QLatin1String( "~~custom~~" );
+  Q_NOWARN_DEPRECATED_PUSH
+  emit addVectorLayer( mSourceWidget->sourceUri(), isCustom ? tr( "SensorThings Layer" ) : cmbConnections->currentText(), QgsSensorThingsProvider::SENSORTHINGS_PROVIDER_KEY );
+  Q_NOWARN_DEPRECATED_POP
+  emit addLayer( Qgis::LayerType::Vector, mSourceWidget->sourceUri(), isCustom ? tr( "SensorThings Layer" ) : cmbConnections->currentText(), QgsSensorThingsProvider::SENSORTHINGS_PROVIDER_KEY );
+}
+
+void QgsSensorThingsSourceSelect::populateConnectionList()
+{
+  cmbConnections->blockSignals( true );
+  cmbConnections->clear();
+  cmbConnections->addItem( tr( "Custom" ), QStringLiteral( "~~custom~~" ) );
+  cmbConnections->addItems( QgsSensorThingsConnectionUtils::connectionList() );
+  cmbConnections->blockSignals( false );
+
+  btnSave->setDisabled( cmbConnections->count() == 1 );
+
+  setConnectionListPosition();
+}
+
+void QgsSensorThingsSourceSelect::setConnectionListPosition()
+{
+  const QString toSelect = QgsSensorThingsConnection::sTreeSensorThingsConnections->selectedItem();
+
+  cmbConnections->setCurrentIndex( cmbConnections->findText( toSelect ) );
+
+  if ( cmbConnections->currentIndex() < 0 )
+  {
+    if ( toSelect.isNull() )
+      cmbConnections->setCurrentIndex( 0 );
+    else
+      cmbConnections->setCurrentIndex( cmbConnections->count() - 1 );
+  }
+
+  const bool isCustom = cmbConnections->currentData().toString() == QLatin1String( "~~custom~~" );
+  btnEdit->setDisabled( isCustom );
+  btnDelete->setDisabled( isCustom );
+}
+
+void QgsSensorThingsSourceSelect::cmbConnections_currentTextChanged( const QString &text )
+{
+  QgsSensorThingsConnection::sTreeSensorThingsConnections->setSelectedItem( text );
+
+  const bool isCustom = cmbConnections->currentData().toString() == QLatin1String( "~~custom~~" );
+  btnEdit->setDisabled( isCustom );
+  btnDelete->setDisabled( isCustom );
+
+  if ( !mBlockChanges )
+  {
+    mBlockChanges++;
+    if ( isCustom )
+    {
+      mConnectionWidget->setSourceUri( QString() );
+    }
+    else
+    {
+      mConnectionWidget->setSourceUri( QgsSensorThingsConnectionUtils::connection( cmbConnections->currentText() ).encodedUri() );
+    }
+    mBlockChanges--;
+  }
+}
+
+void QgsSensorThingsSourceSelect::validate()
+{
+  const bool isValid = mConnectionWidget->isValid() && mSourceWidget->isValid();
+  emit enableButtons( isValid );
+}
+
+#if 0 // TODO
+void QgsSensorThingsSourceSelect::showHelp()
+{
+  QgsHelp::openHelp( QStringLiteral( "managing_data_source/opening_data.html#using-xyz-tile-services" ) );
+}
+#endif
+
+///@endcond PRIVATE

src/gui/providers/sensorthings/qgssensorthingssourceselect.h

@@ -0,0 +1,68 @@
+/***************************************************************************
+                         qgssensorthingssourceselect.h
+                         ---------------------------------
+    Date                 : December 2023
+    Copyright            : (C) 2023 by Nyall Dawson
+    Email                : nyall dot dawson at gmail dot com
+ ***************************************************************************/
+
+/***************************************************************************
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ ***************************************************************************/
+
+#ifndef QGSSENSORTHINGSSOURCESELECT_H
+#define QGSSENSORTHINGSSOURCESELECT_H
+
+#include "qgsabstractdatasourcewidget.h"
+#include "ui_qgssensorthingssourceselectbase.h"
+
+class QgsSensorThingsSourceWidget;
+class QgsSensorThingsConnectionWidget;
+
+///@cond PRIVATE
+class QgsSensorThingsSourceSelect : public QgsAbstractDataSourceWidget, private Ui::QgsSensorThingsSourceSelectBase
+{
+    Q_OBJECT
+
+  public:
+    QgsSensorThingsSourceSelect( QWidget *parent = nullptr, Qt::WindowFlags fl = QgsGuiUtils::ModalDialogFlags, QgsProviderRegistry::WidgetMode widgetMode = QgsProviderRegistry::WidgetMode::None );
+
+    //! Determines the layers the user selected
+    void addButtonClicked() override;
+
+  private slots:
+
+    //! Opens the create connection dialog to build a new connection
+    void btnNew_clicked();
+    //! Opens a dialog to edit an existing connection
+    void btnEdit_clicked();
+    //! Deletes the selected connection
+    void btnDelete_clicked();
+    //! Saves connections to the file
+    void btnSave_clicked();
+    //! Loads connections from the file
+    void btnLoad_clicked();
+    //! Stores the selected datasource whenerver it is changed
+    void cmbConnections_currentTextChanged( const QString &text );
+
+    void validate();
+
+  private:
+    void populateConnectionList();
+    void setConnectionListPosition();
+#if 0
+    void showHelp();
+#endif
+
+    QgsSensorThingsConnectionWidget *mConnectionWidget = nullptr;
+    QgsSensorThingsSourceWidget *mSourceWidget = nullptr;
+    int mBlockChanges = 0;
+};
+///@endcond PRIVATE
+
+#endif // QGSSENSORTHINGSSOURCESELECT_H

src/gui/providers/sensorthings/qgssensorthingssourcewidget.cpp

@@ -144,10 +144,11 @@ void QgsSensorThingsSourceWidget::validate()
   if ( QgsSensorThingsUtils::entityTypeHasGeometry( entityType ) )
     valid = valid && mComboGeometryType->currentIndex() >= 0;
 
-  if ( valid != mIsValid )
-    emit validChanged( valid );
+  if ( valid == mIsValid )
+    return;
 
   mIsValid = valid;
+  emit validChanged( mIsValid );
 }
 
 void QgsSensorThingsSourceWidget::rebuildGeometryTypes( Qgis::SensorThingsEntity type )

src/gui/providers/sensorthings/qgssensorthingssourcewidget.h

@@ -37,6 +37,8 @@ class QgsSensorThingsSourceWidget : public QgsProviderSourceWidget, protected Ui
     void setSourceUri( const QString &uri ) override;
     QString sourceUri() const override;
 
+    bool isValid() const { return mIsValid; }
+
   private slots:
 
     void entityTypeChanged();

src/ui/qgssensorthingsconnectiondialog.ui

@@ -0,0 +1,85 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>QgsSensorThingsConnectionDialog</class>
+ <widget class="QDialog" name="QgsSensorThingsConnectionDialog">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>636</width>
+    <height>353</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>SensorThings Connection</string>
+  </property>
+  <layout class="QGridLayout" name="gridLayout_2">
+   <item row="0" column="0">
+    <widget class="QLabel" name="label">
+     <property name="text">
+      <string>Name</string>
+     </property>
+    </widget>
+   </item>
+   <item row="0" column="1">
+    <widget class="QLineEdit" name="mEditName">
+     <property name="toolTip">
+      <string>Name of the new connection</string>
+     </property>
+    </widget>
+   </item>
+   <item row="2" column="0" colspan="2">
+    <widget class="QGroupBox" name="mConnectionGroupBox">
+     <property name="title">
+      <string>Connection Details</string>
+     </property>
+    </widget>
+   </item>
+   <item row="3" column="0" colspan="2">
+    <widget class="QDialogButtonBox" name="buttonBox">
+     <property name="orientation">
+      <enum>Qt::Horizontal</enum>
+     </property>
+     <property name="standardButtons">
+      <set>QDialogButtonBox::Cancel|QDialogButtonBox::Help|QDialogButtonBox::Ok</set>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>accepted()</signal>
+   <receiver>QgsSensorThingsConnectionDialog</receiver>
+   <slot>accept()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>224</x>
+     <y>381</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>157</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>rejected()</signal>
+   <receiver>QgsSensorThingsConnectionDialog</receiver>
+   <slot>reject()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>292</x>
+     <y>387</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>286</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
+</ui>

src/ui/qgssensorthingsconnectionwidgetbase.ui

@@ -0,0 +1,109 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>QgsSensorThingsConnectionWidgetBase</class>
+ <widget class="QWidget" name="QgsSensorThingsConnectionWidgetBase">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>360</width>
+    <height>168</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>SensorThings Connection</string>
+  </property>
+  <layout class="QGridLayout" name="gridLayout">
+   <property name="leftMargin">
+    <number>0</number>
+   </property>
+   <property name="topMargin">
+    <number>0</number>
+   </property>
+   <property name="rightMargin">
+    <number>0</number>
+   </property>
+   <property name="bottomMargin">
+    <number>0</number>
+   </property>
+   <item row="2" column="0">
+    <widget class="QLabel" name="lblReferer">
+     <property name="text">
+      <string>Referer</string>
+     </property>
+     <property name="buddy">
+      <cstring>mEditReferer</cstring>
+     </property>
+    </widget>
+   </item>
+   <item row="0" column="0">
+    <widget class="QLabel" name="label_2">
+     <property name="text">
+      <string>URL</string>
+     </property>
+    </widget>
+   </item>
+   <item row="1" column="0" colspan="2">
+    <widget class="QGroupBox" name="mAuthGroupBox">
+     <property name="title">
+      <string>Authentication</string>
+     </property>
+     <layout class="QVBoxLayout" name="verticalLayout_3">
+      <property name="leftMargin">
+       <number>6</number>
+      </property>
+      <property name="topMargin">
+       <number>6</number>
+      </property>
+      <property name="rightMargin">
+       <number>6</number>
+      </property>
+      <property name="bottomMargin">
+       <number>6</number>
+      </property>
+      <item>
+       <widget class="QgsAuthSettingsWidget" name="mAuthSettings" native="true"/>
+      </item>
+     </layout>
+    </widget>
+   </item>
+   <item row="2" column="1">
+    <widget class="QLineEdit" name="mEditReferer">
+     <property name="toolTip">
+      <string>Optional custom referer</string>
+     </property>
+    </widget>
+   </item>
+   <item row="0" column="1">
+    <widget class="QLineEdit" name="mEditUrl">
+     <property name="toolTip">
+      <string>URL of the connection, {x}, {y}, and {z} will be replaced with actual values. Use {-y} for inverted y axis.</string>
+     </property>
+     <property name="placeholderText">
+      <string>http://example.com/v1.1/</string>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <customwidgets>
+  <customwidget>
+   <class>QgsAuthSettingsWidget</class>
+   <extends>QWidget</extends>
+   <header>qgsauthsettingswidget.h</header>
+   <container>1</container>
+  </customwidget>
+  <customwidget>
+   <class>QgsProviderSourceWidget</class>
+   <extends>QWidget</extends>
+   <header>qgsprovidersourcewidget.h</header>
+   <container>1</container>
+  </customwidget>
+ </customwidgets>
+ <tabstops>
+  <tabstop>mEditUrl</tabstop>
+  <tabstop>mEditReferer</tabstop>
+ </tabstops>
+ <resources/>
+ <connections/>
+</ui>

src/ui/qgssensorthingssourceselectbase.ui

@@ -0,0 +1,157 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>QgsSensorThingsSourceSelectBase</class>
+ <widget class="QDialog" name="QgsSensorThingsSourceSelectBase">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>564</width>
+    <height>321</height>
+   </rect>
+  </property>
+  <layout class="QGridLayout" name="gridLayout">
+   <item row="4" column="0">
+    <widget class="QDialogButtonBox" name="buttonBox">
+     <property name="orientation">
+      <enum>Qt::Horizontal</enum>
+     </property>
+     <property name="standardButtons">
+      <set>QDialogButtonBox::Help</set>
+     </property>
+    </widget>
+   </item>
+   <item row="3" column="0">
+    <spacer name="verticalSpacer">
+     <property name="orientation">
+      <enum>Qt::Vertical</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>20</width>
+       <height>40</height>
+      </size>
+     </property>
+    </spacer>
+   </item>
+   <item row="1" column="0">
+    <widget class="QGroupBox" name="mConnectionDetailsGroupBox">
+     <property name="title">
+      <string>Connection Details</string>
+     </property>
+     <layout class="QVBoxLayout" name="verticalLayout">
+      <item>
+       <widget class="QWidget" name="mConnectionContainerWidget" native="true"/>
+      </item>
+     </layout>
+    </widget>
+   </item>
+   <item row="0" column="0">
+    <widget class="QGroupBox" name="mConnectionsGroupBox">
+     <property name="title">
+      <string>Connections</string>
+     </property>
+     <layout class="QGridLayout" name="gridLayout_2">
+      <item row="1" column="4">
+       <spacer>
+        <property name="orientation">
+         <enum>Qt::Horizontal</enum>
+        </property>
+        <property name="sizeType">
+         <enum>QSizePolicy::Expanding</enum>
+        </property>
+        <property name="sizeHint" stdset="0">
+         <size>
+          <width>171</width>
+          <height>30</height>
+         </size>
+        </property>
+       </spacer>
+      </item>
+      <item row="0" column="0" colspan="7">
+       <widget class="QComboBox" name="cmbConnections"/>
+      </item>
+      <item row="1" column="2">
+       <widget class="QToolButton" name="btnEdit">
+        <property name="enabled">
+         <bool>false</bool>
+        </property>
+        <property name="toolTip">
+         <string>Edit selected service connection</string>
+        </property>
+        <property name="text">
+         <string>Edit</string>
+        </property>
+       </widget>
+      </item>
+      <item row="1" column="3">
+       <widget class="QToolButton" name="btnDelete">
+        <property name="enabled">
+         <bool>false</bool>
+        </property>
+        <property name="toolTip">
+         <string>Remove connection to selected service</string>
+        </property>
+        <property name="text">
+         <string>Remove</string>
+        </property>
+       </widget>
+      </item>
+      <item row="1" column="5">
+       <widget class="QToolButton" name="btnLoad">
+        <property name="toolTip">
+         <string>Load connections from file</string>
+        </property>
+        <property name="text">
+         <string>Load</string>
+        </property>
+       </widget>
+      </item>
+      <item row="1" column="6">
+       <widget class="QToolButton" name="btnSave">
+        <property name="toolTip">
+         <string>Save connections to file</string>
+        </property>
+        <property name="text">
+         <string>Save</string>
+        </property>
+       </widget>
+      </item>
+      <item row="1" column="0" colspan="2">
+       <widget class="QToolButton" name="btnNew">
+        <property name="toolTip">
+         <string>Create a new service connection</string>
+        </property>
+        <property name="text">
+         <string>&amp;New</string>
+        </property>
+       </widget>
+      </item>
+     </layout>
+    </widget>
+   </item>
+   <item row="2" column="0">
+    <widget class="QGroupBox" name="mConnectionDetailsGroupBox_2">
+     <property name="title">
+      <string>Layer Settings</string>
+     </property>
+     <layout class="QVBoxLayout" name="verticalLayout_2">
+      <item>
+       <widget class="QWidget" name="mLayerSettingsContainerWidget" native="true"/>
+      </item>
+     </layout>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <tabstops>
+  <tabstop>cmbConnections</tabstop>
+  <tabstop>btnNew</tabstop>
+  <tabstop>btnEdit</tabstop>
+  <tabstop>btnDelete</tabstop>
+  <tabstop>btnLoad</tabstop>
+  <tabstop>btnSave</tabstop>
+ </tabstops>
+ <resources/>
+ <connections/>
+</ui>

src/ui/qgssensorthingssourcewidgetbase.ui

@@ -14,6 +14,18 @@
    <string>QgsSensorThingsSourceWidgetBase</string>
   </property>
   <layout class="QGridLayout" name="gridLayout">
+   <property name="leftMargin">
+    <number>0</number>
+   </property>
+   <property name="topMargin">
+    <number>0</number>
+   </property>
+   <property name="rightMargin">
+    <number>0</number>
+   </property>
+   <property name="bottomMargin">
+    <number>0</number>
+   </property>
    <item row="0" column="1">
     <widget class="QComboBox" name="mComboEntityType"/>
    </item>