qgsvectortilesourceselect.cpp

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/***************************************************************************
                         qgsvectortilesourceselect.cpp
                         ---------------------------------
    begin                : April 2020
    copyright            : (C) 2020 by Alexander Bruy
    email                : alexander dot bruy 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 "qgsvectortilesourceselect.h"
#include "qgsvectortileconnection.h"
#include "qgsvectortileconnectiondialog.h"
#include "qgsarcgisvectortileconnectiondialog.h"
#include "qgsprovidermetadata.h"
#include "qgsproviderutils.h"
 
#include <QFileDialog>
#include <QMessageBox>
#include <QPushButton>
#include <QMenu>
#include <QAction>
 
 
QgsVectorTileSourceSelect::QgsVectorTileSourceSelect( QWidget *parent, Qt::WindowFlags fl, QgsProviderRegistry::WidgetMode theWidgetMode )
  : QgsAbstractDataSourceWidget( parent, fl, theWidgetMode )
{
  setupUi( this );
 
  QgsGui::enableAutoGeometryRestore( this );
 
  setWindowTitle( tr( "Add Vector Tile Layer" ) );
 
  mRadioSourceService->setChecked( true );
  mStackedWidget->setCurrentIndex( 1 );
 
  connect( mRadioSourceFile, &QRadioButton::toggled, this, [this]
  {
    mStackedWidget->setCurrentIndex( 0 );
 
    emit enableButtons( !mFileWidget->filePath().isEmpty() );
  } );
  connect( mRadioSourceService, &QRadioButton::toggled, this, [this]
  {
    mStackedWidget->setCurrentIndex( 1 );
 
    emit enableButtons( !cmbConnections->currentText().isEmpty() );
  } );
 
  btnNew->setPopupMode( QToolButton::InstantPopup );
  QMenu *newMenu = new QMenu( btnNew );
 
  QAction *actionNew = new QAction( tr( "New Generic Connection…" ), this );
  connect( actionNew, &QAction::triggered, this, &QgsVectorTileSourceSelect::btnNew_clicked );
  newMenu->addAction( actionNew );
 
  QAction *actionNewArcGISConnection = new QAction( tr( "New ArcGIS Vector Tile Service Connection…" ), this );
  connect( actionNewArcGISConnection, &QAction::triggered, this, &QgsVectorTileSourceSelect::newArcgisVectorTileServerConnection );
  newMenu->addAction( actionNewArcGISConnection );
 
  btnNew->setMenu( newMenu );
 
  connect( btnEdit, &QToolButton::clicked, this, &QgsVectorTileSourceSelect::btnEdit_clicked );
  connect( btnDelete, &QToolButton::clicked, this, &QgsVectorTileSourceSelect::btnDelete_clicked );
  connect( btnSave, &QToolButton::clicked, this, &QgsVectorTileSourceSelect::btnSave_clicked );
  connect( btnLoad, &QToolButton::clicked, this, &QgsVectorTileSourceSelect::btnLoad_clicked );
  connect( cmbConnections, &QComboBox::currentTextChanged, this, &QgsVectorTileSourceSelect::cmbConnections_currentTextChanged );
  connect( buttonBox, &QDialogButtonBox::helpRequested, this, &QgsVectorTileSourceSelect::showHelp );
  setupButtons( buttonBox );
 
  populateConnectionList();
 
  mFileWidget->setDialogTitle( tr( "Open Vector Tile Dataset" ) );
  mFileWidget->setFilter( QgsProviderRegistry::instance()->fileVectorTileFilters() );
  mFileWidget->setStorageMode( QgsFileWidget::GetFile );
  mFileWidget->setOptions( QFileDialog::HideNameFilterDetails );
  connect( mFileWidget, &QgsFileWidget::fileChanged, this, [ = ]( const QString & path )
  {
    emit enableButtons( !path.isEmpty() );
  } );
}
 
void QgsVectorTileSourceSelect::btnNew_clicked()
{
  QgsVectorTileConnectionDialog nc( this );
  if ( nc.exec() )
  {
    QgsVectorTileProviderConnection::addConnection( nc.connectionName(), QgsVectorTileProviderConnection::decodedUri( nc.connectionUri() ) );
    populateConnectionList();
    emit connectionsChanged();
  }
}
 
void QgsVectorTileSourceSelect::newArcgisVectorTileServerConnection()
{
  QgsArcgisVectorTileConnectionDialog nc( this );
  if ( nc.exec() )
  {
    QgsVectorTileProviderConnection::addConnection( nc.connectionName(), QgsVectorTileProviderConnection::decodedUri( nc.connectionUri() ) );
    populateConnectionList();
    emit connectionsChanged();
  }
}
 
void QgsVectorTileSourceSelect::btnEdit_clicked()
{
  const QgsVectorTileProviderConnection::Data connection = QgsVectorTileProviderConnection::connection( cmbConnections->currentText() );
  const QString uri = QgsVectorTileProviderConnection::encodedUri( connection );
 
  switch ( connection.serviceType )
  {
    case QgsVectorTileProviderConnection::Generic:
    {
      QgsVectorTileConnectionDialog nc( this );
      nc.setConnection( cmbConnections->currentText(), uri );
      if ( nc.exec() )
      {
        QgsVectorTileProviderConnection::addConnection( nc.connectionName(), QgsVectorTileProviderConnection::decodedUri( nc.connectionUri() ) );
        populateConnectionList();
        emit connectionsChanged();
      }
      break;
    }
 
    case QgsVectorTileProviderConnection::ArcgisVectorTileService:
    {
      QgsArcgisVectorTileConnectionDialog nc( this );
 
      nc.setConnection( cmbConnections->currentText(), uri );
      if ( nc.exec() )
      {
        QgsVectorTileProviderConnection::addConnection( nc.connectionName(), QgsVectorTileProviderConnection::decodedUri( nc.connectionUri() ) );
        populateConnectionList();
        emit connectionsChanged();
      }
      break;
    }
  }
}
 
void QgsVectorTileSourceSelect::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;
 
  QgsVectorTileProviderConnection::deleteConnection( cmbConnections->currentText() );
 
  populateConnectionList();
  emit connectionsChanged();
}
 
void QgsVectorTileSourceSelect::btnSave_clicked()
{
  QgsManageConnectionsDialog dlg( this, QgsManageConnectionsDialog::Export, QgsManageConnectionsDialog::VectorTile );
  dlg.exec();
}
 
void QgsVectorTileSourceSelect::btnLoad_clicked()
{
  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::VectorTile, fileName );
  dlg.exec();
  populateConnectionList();
}
 
void QgsVectorTileSourceSelect::addButtonClicked()
{
  if ( mRadioSourceService->isChecked() )
  {
 
    const QString uri = QgsVectorTileProviderConnection::encodedUri( QgsVectorTileProviderConnection::connection( cmbConnections->currentText() ) );
    emit addVectorTileLayer( uri, cmbConnections->currentText() );
  }
  else if ( mRadioSourceFile->isChecked() )
  {
    const QString filePath = mFileWidget->filePath();
    const QList< QgsProviderRegistry::ProviderCandidateDetails > providers = QgsProviderRegistry::instance()->preferredProvidersForUri( filePath );
    QString providerKey;
    for ( const QgsProviderRegistry::ProviderCandidateDetails &details : providers )
    {
      if ( details.layerTypes().contains( Qgis::LayerType::VectorTile ) )
      {
        providerKey = details.metadata()->key();
      }
    }
 
    QVariantMap parts;
    parts.insert( QStringLiteral( "path" ), filePath );
    const QString uri = QgsProviderRegistry::instance()->encodeUri( providerKey, parts );
 
    emit addVectorTileLayer( uri, QgsProviderUtils::suggestLayerNameFromFilePath( filePath ) );
  }
}
 
void QgsVectorTileSourceSelect::populateConnectionList()
{
  cmbConnections->blockSignals( true );
  cmbConnections->clear();
  cmbConnections->addItems( QgsVectorTileProviderConnection::connectionList() );
  cmbConnections->blockSignals( false );
 
  btnEdit->setDisabled( cmbConnections->count() == 0 );
  btnDelete->setDisabled( cmbConnections->count() == 0 );
  btnSave->setDisabled( cmbConnections->count() == 0 );
  cmbConnections->setDisabled( cmbConnections->count() == 0 );
 
  setConnectionListPosition();
}
 
void QgsVectorTileSourceSelect::setConnectionListPosition()
{
  const QString toSelect = QgsVectorTileProviderConnection::selectedConnection();
 
  cmbConnections->setCurrentIndex( cmbConnections->findText( toSelect ) );
 
  if ( cmbConnections->currentIndex() < 0 )
  {
    if ( toSelect.isNull() )
      cmbConnections->setCurrentIndex( 0 );
    else
      cmbConnections->setCurrentIndex( cmbConnections->count() - 1 );
  }
 
  emit enableButtons( !cmbConnections->currentText().isEmpty() );
}
 
void QgsVectorTileSourceSelect::cmbConnections_currentTextChanged( const QString &text )
{
  QgsVectorTileProviderConnection::setSelectedConnection( text );
  emit enableButtons( !text.isEmpty() );
}
 
void QgsVectorTileSourceSelect::showHelp()
{
  QgsHelp::openHelp( QStringLiteral( "managing_data_source/opening_data.html#using-vector-tiles-services" ) );
}