qgsexpressionaddfunctionfiledialog.cpp

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/***************************************************************************
    qgsexpressionaddfunctionfiledialog.cpp
    ---------------------
    begin                : May 2024
    copyright            : (C) 2024 by Germán Carrillo
    email                : german at opengis dot ch
 ***************************************************************************
 *                                                                         *
 *   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 "qgsexpressionaddfunctionfiledialog.h"
 
#include "qgshelp.h"
 
#include <QPushButton>
#include <QStandardItemModel>
#include <QString>
 
#include "moc_qgsexpressionaddfunctionfiledialog.cpp"
 
using namespace Qt::StringLiterals;
 
QgsExpressionAddFunctionFileDialog::QgsExpressionAddFunctionFileDialog( bool enableProjectFunctions, QWidget *parent )
  : QDialog( parent )
{
  setupUi( this );
  cboFileOptions->addItem( tr( "Function file" ) );
  cboFileOptions->addItem( tr( "Project functions" ), u"project"_s );
 
  // Disable project functions (they should be created only once)
  if ( !enableProjectFunctions )
  {
    QStandardItem *item = qobject_cast<QStandardItemModel *>( cboFileOptions->model() )->item( 1 );
    item->setFlags( item->flags() & ~Qt::ItemIsEnabled );
  }
 
  connect( cboFileOptions, qOverload<int>( &QComboBox::currentIndexChanged ), this, &QgsExpressionAddFunctionFileDialog::cboFileOptions_currentIndexChanged );
  connect( txtNewFileName, &QLineEdit::textChanged, this, [this]( const QString & ) { updateOkButtonStatus(); } );
  connect( buttonBox, &QDialogButtonBox::helpRequested, this, [] {
    QgsHelp::openHelp( u"expressions/expression.html#function-editor"_s );
  } );
 
  updateOkButtonStatus();
}
 
void QgsExpressionAddFunctionFileDialog::cboFileOptions_currentIndexChanged( int )
{
  bool projectSelected = cboFileOptions->currentData() == "project"_L1;
  lblNewFileName->setVisible( !projectSelected );
  txtNewFileName->setVisible( !projectSelected );
  updateOkButtonStatus();
}
 
void QgsExpressionAddFunctionFileDialog::updateOkButtonStatus()
{
  QPushButton *okBtn = buttonBox->button( QDialogButtonBox::StandardButton::Ok );
  okBtn->setEnabled( true );
 
  if ( cboFileOptions->currentData() != "project"_L1 )
  {
    okBtn->setEnabled( !txtNewFileName->text().trimmed().isEmpty() );
  }
}
 
bool QgsExpressionAddFunctionFileDialog::createProjectFunctions() const
{
  return cboFileOptions->currentData() == "project"_L1;
}
 
QString QgsExpressionAddFunctionFileDialog::fileName()
{
  return txtNewFileName->text().trimmed();
}