src/gui/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 "qgsproject.h"
#include "qgslogger.h"
#include "qgsvectordataprovider.h"

#include <QSettings>
#include <QComboBox>
#include <QPushButton>
#include <QLabel>
#include <QLayout>
#include <QTextCodec>

QgsEncodingFileDialog::QgsEncodingFileDialog( QWidget * parent,
    const QString & caption, const QString & directory,
    const QString & filter, const QString & encoding )
    : QFileDialog( parent, caption, directory, filter )
{
  mCancelAll       = false;
  mCancelAllButton = 0;
  mEncodingComboBox = new QComboBox( this );
  QLabel* l = new QLabel( tr( "Encoding:" ), this );
  layout()->addWidget( l );
  layout()->addWidget( mEncodingComboBox );

  mEncodingComboBox->addItems( QgsVectorDataProvider::availableEncodings() );

  // Use default encoding if none supplied
  QString enc = encoding;
  if ( encoding.isEmpty() )
  {
    QSettings settings;
    enc = settings.value( "/UI/encoding", QString( "System" ) ).toString();
  }

  // The specified decoding is added if not existing alread, 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
  selectFilter( filters().at( 0 ) );

  // Connect our slot to get a signal when the user is done with the file dialog
  connect( this, SIGNAL( accepted() ), this, SLOT( saveUsedEncoding() ) );


}

QgsEncodingFileDialog::~QgsEncodingFileDialog()
{

}

QString QgsEncodingFileDialog::encoding() const
{
  return mEncodingComboBox->currentText();
}

void QgsEncodingFileDialog::saveUsedEncoding()
{
  QSettings settings;
  settings.setValue( "/UI/encoding", encoding() );
  QgsDebugMsg( QString( "Set encoding " + encoding() + " as default." ) );
}

void QgsEncodingFileDialog::addCancelAll()
{
  if ( ! mCancelAllButton )
  {
    mCancelAllButton = new QPushButton( tr( "Cancel &All" ), NULL );
    layout()->addWidget( mCancelAllButton ); // Ownership transfered, no need to delete later on
    connect( mCancelAllButton, SIGNAL( clicked() ), this, SLOT( pbnCancelAll_clicked() ) );
  }
}

bool QgsEncodingFileDialog::cancelAll()
{
  return mCancelAll;
}

void QgsEncodingFileDialog::pbnCancelAll_clicked()
{
  mCancelAll = true;
  // Now, continue as the user clicked the cancel button
  reject();
}