qgsencodingfiledialog.cpp

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/***************************************************************************
    qgsencodingfiledialog.cpp - File dialog which queries the encoding type
     --------------------------------------
    Date                 : 16-Feb-2005
    Copyright            : (C) 2005 by Marco Hugentobler
    email                : marco.hugentobler@autoform.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 "qgsencodingfiledialog.h"
 
#include "qgslogger.h"
#include "qgsproject.h"
#include "qgssettings.h"
#include "qgsvectordataprovider.h"
 
#include <QComboBox>
#include <QDialogButtonBox>
#include <QLabel>
#include <QLayout>
#include <QPushButton>
#include <QString>
#include <QTextCodec>
 
#include "moc_qgsencodingfiledialog.cpp"
 
using namespace Qt::StringLiterals;
 
QgsEncodingFileDialog::QgsEncodingFileDialog( QWidget *parent, const QString &caption, const QString &directory, const QString &filter, const QString &encoding )
  : QFileDialog( parent, caption, directory, filter )
{
  mCancelAll = false;
  mCancelAllButton = nullptr;
  mEncodingComboBox = new QComboBox( this );
  QLabel *l = new QLabel( tr( "Encoding:" ), this );
 
  setOption( QFileDialog::DontUseNativeDialog );
  layout()->addWidget( l );
  layout()->addWidget( mEncodingComboBox );
 
  mEncodingComboBox->addItems( QgsVectorDataProvider::availableEncodings() );
 
  // Use default encoding if none supplied
  QString enc = encoding;
  if ( encoding.isEmpty() )
  {
    const QgsSettings settings;
    enc = settings.value( u"UI/encoding"_s, "System" ).toString();
  }
 
  // The specified decoding is added if not existing already, and then set current.
  // This should select it.
  int encindex = mEncodingComboBox->findText( enc );
  if ( encindex < 0 )
  {
    mEncodingComboBox->insertItem( 0, enc );
    encindex = 0;
  }
  mEncodingComboBox->setCurrentIndex( encindex );
 
  // if this dialog is being invoked from QgisApp::findFiles_(), then we
  // need to force selection of the first filter since that corresponds to
  // the file name we're looking for; even if we're not here from
  // findFiles_(), it won't hurt to force selection of the first file filter
  selectNameFilter( nameFilters().at( 0 ) );
 
  // Connect our slot to get a signal when the user is done with the file dialog
  connect( this, &QDialog::accepted, this, &QgsEncodingFileDialog::saveUsedEncoding );
}
 
QString QgsEncodingFileDialog::encoding() const
{
  return mEncodingComboBox->currentText();
}
 
void QgsEncodingFileDialog::saveUsedEncoding()
{
  QgsSettings settings;
  settings.setValue( u"UI/encoding"_s, encoding() );
  QgsDebugMsgLevel( u"Set encoding %1 as default."_s.arg( encoding() ), 2 );
}
 
void QgsEncodingFileDialog::addCancelAll()
{
  if ( !mCancelAllButton )
  {
    mCancelAllButton = new QPushButton( tr( "Cancel &All" ), nullptr );
    layout()->addWidget( mCancelAllButton ); // Ownership transferred, no need to delete later on
    connect( mCancelAllButton, &QAbstractButton::clicked, this, &QgsEncodingFileDialog::pbnCancelAll_clicked );
  }
}
 
bool QgsEncodingFileDialog::cancelAll() const
{
  return mCancelAll;
}
 
void QgsEncodingFileDialog::pbnCancelAll_clicked()
{
  mCancelAll = true;
  // Now, continue as the user clicked the cancel button
  reject();
}
 
QgsEncodingSelectionDialog::QgsEncodingSelectionDialog( QWidget *parent, const QString &caption, const QString &encoding, Qt::WindowFlags flags )
  : QDialog( parent, flags )
{
  QString c = caption;
  if ( c.isEmpty() )
    c = tr( "Encoding" );
 
  setWindowTitle( tr( "Select Encoding" ) );
 
  QVBoxLayout *layout = new QVBoxLayout();
  layout->setContentsMargins( 6, 6, 6, 6 );
 
  mEncodingComboBox = new QComboBox( this );
  QLabel *l = new QLabel( c, this );
 
  QHBoxLayout *hLayout = new QHBoxLayout();
  hLayout->addWidget( l );
  hLayout->addWidget( mEncodingComboBox, 1 );
  layout->addLayout( hLayout );
 
  QDialogButtonBox *buttonBox = new QDialogButtonBox( QDialogButtonBox::Ok | QDialogButtonBox::Cancel, Qt::Horizontal, this );
  buttonBox->button( QDialogButtonBox::Ok )->setDefault( true );
  connect( buttonBox, &QDialogButtonBox::rejected, this, &QDialog::reject );
  connect( buttonBox, &QDialogButtonBox::accepted, this, &QDialog::accept );
  layout->addWidget( buttonBox );
  setLayout( layout );
 
  mEncodingComboBox->addItem( tr( "System" ) );
  mEncodingComboBox->addItems( QgsVectorDataProvider::availableEncodings() );
 
  // Use default encoding if none supplied
  QString enc = encoding;
  if ( encoding.isEmpty() )
  {
    const QgsSettings settings;
    enc = settings.value( u"UI/encoding"_s, "System" ).toString();
  }
 
  setEncoding( enc );
}
 
QString QgsEncodingSelectionDialog::encoding() const
{
  return mEncodingComboBox->currentText();
}
 
void QgsEncodingSelectionDialog::setEncoding( const QString &encoding )
{
  // The specified decoding is added if not existing already, and then set current.
  // This should select it.
 
  int encindex = mEncodingComboBox->findText( encoding );
  if ( encindex < 0 )
  {
    mEncodingComboBox->insertItem( 0, encoding );
    encindex = 0;
  }
  mEncodingComboBox->setCurrentIndex( encindex );
}