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qgssublayersdialog.cpp
191 lines (168 loc) · 6.58 KB
/
qgssublayersdialog.cpp
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/***************************************************************************
qgssublayersdialog.cpp - dialog for selecting sublayers
---------------------
begin : January 2009
copyright : (C) 2009 by Florian El Ahdab
email : felahdab 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 "qgssublayersdialog.h"
#include "qgslogger.h"
#include "qgssettings.h"
#include <QTableWidgetItem>
#include <QPushButton>
QgsSublayersDialog::QgsSublayersDialog( ProviderType providerType, const QString &name,
QWidget *parent, Qt::WindowFlags fl )
: QDialog( parent, fl )
, mName( name )
{
setupUi( this );
if ( providerType == QgsSublayersDialog::Ogr )
{
setWindowTitle( tr( "Select vector layers to add..." ) );
layersTable->setHeaderLabels( QStringList() << tr( "Layer ID" ) << tr( "Layer name" )
<< tr( "Number of features" ) << tr( "Geometry type" ) );
mShowCount = true;
mShowType = true;
}
else if ( providerType == QgsSublayersDialog::Gdal )
{
setWindowTitle( tr( "Select raster layers to add..." ) );
layersTable->setHeaderLabels( QStringList() << tr( "Layer ID" ) << tr( "Layer name" ) );
}
else
{
setWindowTitle( tr( "Select layers to add..." ) );
layersTable->setHeaderLabels( QStringList() << tr( "Layer ID" ) << tr( "Layer name" )
<< tr( "Type" ) );
mShowType = true;
}
// add a "Select All" button - would be nicer with an icon
QPushButton *button = new QPushButton( tr( "Select All" ) );
buttonBox->addButton( button, QDialogButtonBox::ActionRole );
connect( button, SIGNAL( pressed() ), layersTable, SLOT( selectAll() ) );
// connect( pbnSelectNone, SIGNAL( pressed() ), SLOT( layersTable->selectNone() ) );
QgsSettings settings;
restoreGeometry( settings.value( "/Windows/" + mName + "SubLayers/geometry" ).toByteArray() );
// Checkbox about adding sublayers to a group
if ( mShowAddToGroupCheckbox )
{
mCheckboxAddToGroup = new QCheckBox( tr( "Add layers to a group" ) );
bool addToGroup = settings.value( QStringLiteral( "/qgis/openSublayersInGroup" ), false ).toBool();
mCheckboxAddToGroup->setChecked( addToGroup );
buttonBox->addButton( mCheckboxAddToGroup, QDialogButtonBox::ActionRole );
}
}
QgsSublayersDialog::~QgsSublayersDialog()
{
QgsSettings settings;
settings.setValue( "/Windows/" + mName + "SubLayers/geometry", saveGeometry() );
settings.setValue( "/Windows/" + mName + "SubLayers/headerState",
layersTable->header()->saveState() );
}
static bool _isLayerIdUnique( int layerId, QTreeWidget *layersTable )
{
int count = 0;
for ( int j = 0; j < layersTable->topLevelItemCount(); j++ )
{
if ( layersTable->topLevelItem( j )->text( 0 ).toInt() == layerId )
{
count++;
}
}
return count == 1;
}
QgsSublayersDialog::LayerDefinitionList QgsSublayersDialog::selection()
{
LayerDefinitionList list;
for ( int i = 0; i < layersTable->selectedItems().size(); i++ )
{
QTreeWidgetItem *item = layersTable->selectedItems().at( i );
LayerDefinition def;
def.layerId = item->text( 0 ).toInt();
def.layerName = item->text( 1 );
if ( mShowType )
{
// If there are more sub layers of the same name (virtual for geometry types),
// add geometry type
if ( !_isLayerIdUnique( def.layerId, layersTable ) )
def.type = item->text( mShowCount ? 3 : 2 );
}
list << def;
}
return list;
}
void QgsSublayersDialog::populateLayerTable( const QgsSublayersDialog::LayerDefinitionList &list )
{
Q_FOREACH ( const LayerDefinition &item, list )
{
QStringList elements;
elements << QString::number( item.layerId ) << item.layerName;
if ( mShowCount )
elements << QString::number( item.count );
if ( mShowType )
elements << item.type;
layersTable->addTopLevelItem( new QTreeWidgetItem( elements ) );
}
// resize columns
QgsSettings settings;
QByteArray ba = settings.value( "/Windows/" + mName + "SubLayers/headerState" ).toByteArray();
if ( ! ba.isNull() )
{
layersTable->header()->restoreState( ba );
}
else
{
for ( int i = 0; i < layersTable->columnCount(); i++ )
layersTable->resizeColumnToContents( i );
layersTable->setColumnWidth( 1, layersTable->columnWidth( 1 ) + 10 );
}
}
// override exec() instead of using showEvent()
// because in some case we don't want the dialog to appear (depending on user settings)
// TODO alert the user when dialog is not opened
int QgsSublayersDialog::exec()
{
QgsSettings settings;
QString promptLayers = settings.value( QStringLiteral( "qgis/promptForSublayers" ), 1 ).toString();
// make sure three are sublayers to choose
if ( layersTable->topLevelItemCount() == 0 )
return QDialog::Rejected;
// check promptForSublayers settings - perhaps this should be in QgsDataSource instead?
if ( promptLayers == QLatin1String( "no" ) )
return QDialog::Rejected;
else if ( promptLayers == QLatin1String( "all" ) )
{
layersTable->selectAll();
return QDialog::Accepted;
}
// if there is only 1 sublayer (probably the main layer), just select that one and return
if ( layersTable->topLevelItemCount() == 1 )
{
layersTable->selectAll();
return QDialog::Accepted;
}
layersTable->sortByColumn( 1, Qt::AscendingOrder );
layersTable->setSortingEnabled( true );
// if we got here, disable override cursor, open dialog and return result
// TODO add override cursor where it is missing (e.g. when opening via "Add Raster")
QCursor cursor;
bool overrideCursor = nullptr != QApplication::overrideCursor();
if ( overrideCursor )
{
cursor = QCursor( * QApplication::overrideCursor() );
QApplication::restoreOverrideCursor();
}
int ret = QDialog::exec();
if ( overrideCursor )
QApplication::setOverrideCursor( cursor );
if ( mCheckboxAddToGroup )
settings.setValue( QStringLiteral( "/qgis/openSublayersInGroup" ), mCheckboxAddToGroup->isChecked() );
return ret;
}