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/***************************************************************************
qgsattributetypeloaddialog.cpp
-------------------
begin : June 2009
copyright : (C) 2000 by Richard Kostecky
email : cSf.Kostej@gmail.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 "qgsattributetypeloaddialog.h"
#include "qgsmaplayer.h"
#include "qgsvectordataprovider.h"
#include "qgslogger.h"
#include "qgsmaplayerregistry.h"
#include <QTableWidgetItem>
#include <QLineEdit>
#include <QComboBox>
#include <QLabel>
#include <QFrame>
#include <QScrollArea>
#include <QCompleter>
#include <QSpinBox>
#include <QPushButton>
#include <QHBoxLayout>
#include <QFileDialog>
QgsAttributeTypeLoadDialog::QgsAttributeTypeLoadDialog( QgsVectorLayer *vl )
: QDialog(),
mLayer( vl )
{
setupUi( this );
connect( layerComboBox, SIGNAL( currentIndexChanged( int ) ), this, SLOT( fillComboBoxes( int ) ) );
connect( keyComboBox, SIGNAL( currentIndexChanged( int ) ), this, SLOT( createPreview( int ) ) );
connect( valueComboBox, SIGNAL( currentIndexChanged( int ) ), this, SLOT( createPreview( int ) ) );
connect( previewButton, SIGNAL( pressed( ) ), this, SLOT( previewButtonPushed( ) ) );
fillLayerList();
}
QgsAttributeTypeLoadDialog::~QgsAttributeTypeLoadDialog()
{
}
void QgsAttributeTypeLoadDialog::setVectorLayer( QgsVectorLayer *layer )
{
mLayer = layer;
}
void QgsAttributeTypeLoadDialog::previewButtonPushed()
{
createPreview( valueComboBox->currentIndex(), true );
}
void QgsAttributeTypeLoadDialog::fillLayerList()
{
layerComboBox->clear();
foreach ( QgsMapLayer *l, QgsMapLayerRegistry::instance()->mapLayers() )
{
QgsVectorLayer *vl = qobject_cast< QgsVectorLayer * >( l );
if ( vl )
layerComboBox->addItem( vl->name(), vl->id() );
}
}
void QgsAttributeTypeLoadDialog::fillComboBoxes( int layerIndex )
{
//clear comboboxes first
keyComboBox->clear();
valueComboBox->clear();
if ( layerIndex < 0 )
{
return;
}
QgsMapLayer* dataLayer = QgsMapLayerRegistry::instance()->mapLayer( layerComboBox->itemData( layerComboBox->currentIndex() ).toString() );
QgsVectorLayer* vLayer = qobject_cast<QgsVectorLayer *>( dataLayer );
if ( vLayer == NULL )
{
return;
}
QMap<QString, int> fieldMap = vLayer->dataProvider()->fieldNameMap();
QMap<QString, int>::iterator it = fieldMap.begin();
for ( ; it != fieldMap.end(); ++it )
{
keyComboBox->addItem( it.key(), it.value() );
valueComboBox->addItem( it.key(), it.value() );
}
}
void QgsAttributeTypeLoadDialog::createPreview( int fieldIndex, bool full )
{
previewTableWidget->clearContents();
for ( int i = previewTableWidget->rowCount() - 1; i > 0; i-- )
{
previewTableWidget->removeRow( i );
}
if ( layerComboBox->currentIndex() < 0 || fieldIndex < 0 )
{
//when nothing is selected there is no reason for preview
return;
}
int idx = keyComboBox->itemData( keyComboBox->currentIndex() ).toInt();
int idx2 = valueComboBox->itemData( valueComboBox->currentIndex() ).toInt();
QgsMapLayer* dataLayer = QgsMapLayerRegistry::instance()->mapLayer( layerComboBox->itemData( layerComboBox->currentIndex() ).toString() );
QgsVectorLayer* vLayer = qobject_cast<QgsVectorLayer *>( dataLayer );
if ( vLayer == NULL )
{
return;
}
QgsAttributeList attributeList = QgsAttributeList();
attributeList.append( idx );
attributeList.append( idx2 );
QgsFeatureIterator fit = vLayer->getFeatures( QgsFeatureRequest().setFlags( QgsFeatureRequest::NoGeometry ).setSubsetOfAttributes( attributeList ) );
QgsFeature f;
QMap<QString, QVariant> valueMap;
while ( fit.nextFeature( f ) )
{
QVariant val1 = f.attribute( idx );
QVariant val2 = f.attribute( idx2 );
if ( val1.isValid() && !val1.isNull() && !val1.toString().isEmpty()
&& val2.isValid() && !val2.isNull() && !val2.toString().isEmpty() )
{
valueMap.insert( val1.toString(), val2.toString() );
}
if ( !full && valueMap.size() > 8 )
break; //just first entries all on button
}
int row = 0;
for ( QMap<QString, QVariant>::iterator mit = valueMap.begin(); mit != valueMap.end(); ++mit, row++ )
{
previewTableWidget->insertRow( row );
previewTableWidget->setItem( row, 0, new QTableWidgetItem( mit.value().toString() ) );
previewTableWidget->setItem( row, 1, new QTableWidgetItem( mit.key() ) );
}
}
QMap<QString, QVariant> &QgsAttributeTypeLoadDialog::valueMap()
{
return mValueMap;
}
bool QgsAttributeTypeLoadDialog::insertNull()
{
return nullCheckBox->isChecked();
}
void QgsAttributeTypeLoadDialog::loadDataToValueMap()
{
mValueMap.clear();
int idx = keyComboBox->itemData( keyComboBox->currentIndex() ).toInt();
int idx2 = valueComboBox->itemData( valueComboBox->currentIndex() ).toInt();
QgsMapLayer* dataLayer = QgsMapLayerRegistry::instance()->mapLayer( layerComboBox->itemData( layerComboBox->currentIndex() ).toString() );
QgsVectorLayer* vLayer = qobject_cast<QgsVectorLayer *>( dataLayer );
if ( vLayer == NULL )
{
return;
}
QgsAttributeList attributeList = QgsAttributeList();
attributeList.append( idx );
attributeList.append( idx2 );
QgsFeatureIterator fit = vLayer->getFeatures( QgsFeatureRequest().setFlags( QgsFeatureRequest::NoGeometry ).setSubsetOfAttributes( attributeList ) );
QgsFeature f;
while ( fit.nextFeature( f ) )
{
QVariant val = f.attribute( idx );
if ( val.isValid() && !val.isNull() && !val.toString().isEmpty() )
{
mValueMap.insert( f.attribute( idx2 ).toString(), val );
}
}
}
void QgsAttributeTypeLoadDialog::accept()
{
//store data to output variable
loadDataToValueMap();
QDialog::accept();
}
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