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qgsdatabasetablecombobox.cpp
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qgsdatabasetablecombobox.cpp
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/***************************************************************************
qgsdatabasetablecombobox.cpp
--------------------------------
Date : March 2020
Copyright : (C) 2020 Nyall Dawson
Email : nyall dot dawson 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 "qgsdatabasetablecombobox.h"
#include "qgsdatabasetablemodel.h"
#include "qgsapplication.h"
#include "qgsabstractdatabaseproviderconnection.h"
#include <QHBoxLayout>
#include <QToolButton>
QgsDatabaseTableComboBox::QgsDatabaseTableComboBox( const QString &provider, const QString &connection, const QString &schema, QWidget *parent )
: QWidget( parent )
, mProvider( provider )
, mConnection( connection )
, mSchema( schema )
{
mModel = new QgsDatabaseTableModel( provider, connection, schema, this );
init();
}
QgsDatabaseTableComboBox::QgsDatabaseTableComboBox( QgsAbstractDatabaseProviderConnection *connection, const QString &schema, QWidget *parent )
: QWidget( parent )
, mSchema( schema )
{
mModel = new QgsDatabaseTableModel( connection, schema, this );
init();
}
void QgsDatabaseTableComboBox::init()
{
mComboBox = new QComboBox();
mSortModel = new QSortFilterProxyModel( this );
mSortModel->setSourceModel( mModel );
mSortModel->setSortRole( Qt::DisplayRole );
mSortModel->setSortLocaleAware( true );
mSortModel->setSortCaseSensitivity( Qt::CaseInsensitive );
mSortModel->setDynamicSortFilter( true );
mSortModel->sort( 0 );
mComboBox->setModel( mSortModel );
QHBoxLayout *l = new QHBoxLayout();
l->setContentsMargins( 0, 0, 0, 0 );
l->addWidget( mComboBox );
QToolButton *refreshButton = new QToolButton();
refreshButton->setAutoRaise( true );
refreshButton->setToolTip( tr( "Refresh tables" ) );
refreshButton->setIcon( QgsApplication::getThemeIcon( QStringLiteral( "mActionRefresh.svg" ) ) );
l->addWidget( refreshButton );
setLayout( l );
connect( refreshButton, &QToolButton::clicked, this, &QgsDatabaseTableComboBox::refreshTables );
connect( mComboBox, static_cast < void ( QComboBox::* )( int ) > ( &QComboBox::activated ), this, &QgsDatabaseTableComboBox::indexChanged );
connect( mSortModel, &QAbstractItemModel::rowsInserted, this, &QgsDatabaseTableComboBox::rowsChanged );
connect( mSortModel, &QAbstractItemModel::rowsRemoved, this, &QgsDatabaseTableComboBox::rowsChanged );
}
void QgsDatabaseTableComboBox::setTable( const QString &table, const QString &schema )
{
if ( schema == currentSchema() && table == currentTable() )
return;
if ( table.isEmpty() )
{
mComboBox->setCurrentIndex( -1 );
emit tableChanged( QString() );
return;
}
const QModelIndexList idxs = mSortModel->match( mSortModel->index( 0, 0 ), QgsDatabaseTableModel::RoleTableName, table, -1, Qt::MatchFixedString | Qt::MatchCaseSensitive );
for ( const QModelIndex &proxyIdx : idxs )
{
if ( proxyIdx.isValid() && proxyIdx.data( QgsDatabaseTableModel::RoleTableName ).toString() == table
&& ( schema.isEmpty() || proxyIdx.data( QgsDatabaseTableModel::RoleSchema ).toString() == schema ) )
{
mComboBox->setCurrentIndex( proxyIdx.row() );
emit tableChanged( currentTable(), currentSchema() );
return;
}
}
mComboBox->setCurrentIndex( -1 );
emit tableChanged( QString() );
}
void QgsDatabaseTableComboBox::setConnectionName( const QString &connection, const QString &provider )
{
if ( !provider.isEmpty() )
mProvider = provider;
mConnection = connection;
const QString oldTable = currentTable();
const QString oldSchema = currentSchema();
QgsDatabaseTableModel *oldModel = mModel;
mModel = new QgsDatabaseTableModel( mProvider, mConnection, mSchema, this );
mSortModel->setSourceModel( mModel );
oldModel->deleteLater();
if ( currentTable() != oldTable || currentSchema() != oldSchema )
setTable( oldTable, oldSchema );
}
void QgsDatabaseTableComboBox::setSchema( const QString &schema )
{
const QString oldTable = currentTable();
QgsDatabaseTableModel *oldModel = mModel;
mSchema = schema;
mModel = new QgsDatabaseTableModel( mProvider, mConnection, mSchema, this );
mSortModel->setSourceModel( mModel );
oldModel->deleteLater();
setTable( oldTable );
}
void QgsDatabaseTableComboBox::refreshTables()
{
const QString oldSchema = currentSchema();
const QString oldTable = currentTable();
mModel->refresh();
setTable( oldTable, oldSchema );
}
QString QgsDatabaseTableComboBox::currentSchema() const
{
const QModelIndex proxyIndex = mSortModel->index( mComboBox->currentIndex(), 0 );
if ( !proxyIndex.isValid() )
{
return QString();
}
return mSortModel->data( proxyIndex, QgsDatabaseTableModel::RoleSchema ).toString();
}
QString QgsDatabaseTableComboBox::currentTable() const
{
const QModelIndex proxyIndex = mSortModel->index( mComboBox->currentIndex(), 0 );
if ( !proxyIndex.isValid() )
{
return QString();
}
return mSortModel->data( proxyIndex, QgsDatabaseTableModel::RoleTableName ).toString();
}
void QgsDatabaseTableComboBox::indexChanged( int i )
{
Q_UNUSED( i )
emit tableChanged( currentTable() );
}
void QgsDatabaseTableComboBox::rowsChanged()
{
if ( mComboBox->count() == 1 )
{
//currently selected connection item has changed
emit tableChanged( currentTable(), currentSchema() );
}
else if ( mComboBox->count() == 0 )
{
emit tableChanged( QString() );
}
}