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webdatamodel.cpp
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#include "webdatamodel.h"
#include "qgisinterface.h"
#include "qgsapplication.h"
#include "qgscoordinatereferencesystem.h"
#include "qgsdatasourceuri.h"
#include "qgslegendinterface.h"
#include "qgsmapcanvas.h"
#include "qgsmaplayerregistry.h"
#include "qgsmaprenderer.h"
#include "qgsnetworkaccessmanager.h"
#include "qgsrasterfilewriter.h"
#include "qgsrasterlayer.h"
#include "qgsrasterlayersaveasdialog.h"
#include "qgsvectorfilewriter.h"
#include "qgsvectorlayer.h"
#include <QDomDocument>
#include <QDomElement>
#include <QNetworkReply>
#include <QNetworkRequest>
#include <QProgressDialog>
#include <QTreeWidgetItem>
//legend
#include "qgslayertree.h"
#include "qgslayertreegroup.h"
#include "qgslayertreelayer.h"
#include "qgslayertreemodel.h"
#include "qgslayertreeview.h"
static const QString WFS_NAMESPACE = "http://www.opengis.net/wfs";
WebDataModel::WebDataModel( QgisInterface* iface ): QStandardItemModel(), mCapabilitiesReply( 0 ), mIface( iface )
{
QStringList headerLabels;
headerLabels << tr( "Name" );
headerLabels << tr( "Favorite" );
headerLabels << tr( "Type" );
headerLabels << tr( "In map" );
headerLabels << tr( "Status" );
headerLabels << tr( "CRS" );
headerLabels << tr( "Formats" );
headerLabels << tr( "Styles" );
setHorizontalHeaderLabels( headerLabels );
connect( this, SIGNAL( itemChanged( QStandardItem* ) ), this, SLOT( handleItemChange( QStandardItem* ) ) );
connect( QgsMapLayerRegistry::instance(), SIGNAL( layersWillBeRemoved( QStringList ) ), this,
SLOT( syncLayerRemove( QStringList ) ) );
//create cache layer directory if not already there
QDir cacheDirectory = QDir( QgsApplication::qgisSettingsDirPath() + "/cachelayers" );
if ( !cacheDirectory.exists() )
{
cacheDirectory.mkpath( QgsApplication::qgisSettingsDirPath() + "/cachelayers" );
}
loadFromXML();
}
WebDataModel::~WebDataModel()
{
saveToXML();
}
void WebDataModel::addService( const QString& title, const QString& url, const QString& service )
{
QString requestUrl = url;
requestUrl.append( "REQUEST=GetCapabilities&SERVICE=" );
requestUrl.append( service );
if ( service.compare( "WFS", Qt::CaseInsensitive ) == 0 )
{
requestUrl.append( "&VERSION=1.0.0" );
}
QNetworkRequest request( requestUrl );
request.setAttribute( QNetworkRequest::CacheSaveControlAttribute, true );
request.setAttribute( QNetworkRequest::CacheLoadControlAttribute, QNetworkRequest::PreferNetwork );
mCapabilitiesReply = QgsNetworkAccessManager::instance()->get( request );
mCapabilitiesReply->setProperty( "title", title );
mCapabilitiesReply->setProperty( "url", url );
if ( service.compare( "WMS", Qt::CaseInsensitive ) == 0 )
{
connect( mCapabilitiesReply, SIGNAL( finished() ), this, SLOT( wmsCapabilitiesRequestFinished() ) );
}
else if ( service.compare( "WFS", Qt::CaseInsensitive ) == 0 )
{
connect( mCapabilitiesReply, SIGNAL( finished() ), this, SLOT( wfsCapabilitiesRequestFinished() ) );
}
}
void WebDataModel::wmsCapabilitiesRequestFinished()
{
if ( !mCapabilitiesReply )
{
return;
}
if ( mCapabilitiesReply->error() != QNetworkReply::NoError )
{
//QMessageBox::critical( 0, tr( "Error" ), tr( "Capabilities could not be retrieved from the server" ) );
return;
}
QByteArray buffer = mCapabilitiesReply->readAll();
QString capabilitiesDocError;
QDomDocument capabilitiesDocument;
if ( !capabilitiesDocument.setContent( buffer, true, &capabilitiesDocError ) )
{
//QMessageBox::critical( 0, tr( "Error parsing capabilities document" ), capabilitiesDocError );
return;
}
QString version = capabilitiesDocument.documentElement().attribute( "version" );
//get format list for GetMap
QString formatList;
QDomElement capabilityElem = capabilitiesDocument.documentElement().firstChildElement( "Capability" );
QDomElement requestElem = capabilityElem.firstChildElement( "Request" );
QDomElement getMapElem = requestElem.firstChildElement( "GetMap" );
QDomNodeList formatNodeList = getMapElem.elementsByTagName( "Format" );
for ( int i = 0; i < formatNodeList.size(); ++i )
{
if ( i > 0 )
{
formatList.append( "," );
}
formatList.append( formatNodeList.at( i ).toElement().text() );
}
//get name, title, abstract of all layers (style / CRS? )
QDomNodeList layerList = capabilitiesDocument.elementsByTagName( "Layer" );
if ( layerList.size() < 1 )
{
return;
}
//add parentItem
QString serviceTitle = mCapabilitiesReply->property( "title" ).toString();
QList<QStandardItem*> serviceTitleItems = findItems( serviceTitle );
QStandardItem* wmsTitleItem = 0;
if ( serviceTitleItems.size() < 1 )
{
wmsTitleItem = new QStandardItem( serviceTitle );
invisibleRootItem()->setChild( invisibleRootItem()->rowCount(), wmsTitleItem );
}
else
{
wmsTitleItem = serviceTitleItems.at( 0 );
wmsTitleItem->removeRows( 0, wmsTitleItem->rowCount() );
}
QString url = mCapabilitiesReply->property( "url" ).toString();
wmsTitleItem->setFlags( Qt::ItemIsEnabled );
wmsTitleItem->setData( url );
QStandardItem* wmsTitleServiceItem = new QStandardItem( "WMS" );
invisibleRootItem()->setChild( invisibleRootItem()->rowCount() - 1 , 2, wmsTitleServiceItem );
wmsTitleItem->setFlags( Qt::ItemIsEnabled );
for ( unsigned int i = 0; i < layerList.length(); ++i )
{
QString name, title, abstract, crs, style;
QDomElement layerElem = layerList.at( i ).toElement();
QDomNodeList nameList = layerElem.elementsByTagName( "Name" );
if ( nameList.size() > 0 )
{
name = nameList.at( 0 ).toElement().text();
}
QDomNodeList titleList = layerElem.elementsByTagName( "Title" );
if ( titleList.size() > 0 )
{
title = titleList.at( 0 ).toElement().text();
}
QDomNodeList abstractList = layerElem.elementsByTagName( "Abstract" );
if ( abstractList.size() > 0 )
{
abstract = abstractList.at( 0 ).toElement().text();
}
//CRS in WMS 1.3
QDomNodeList crsList = layerElem.elementsByTagName( "CRS" );
for ( int i = 0; i < crsList.size(); ++i )
{
QString crsName = crsList.at( i ).toElement().text();
if ( i > 0 )
{
crsName.prepend( "," );
}
crs.append( crsName );
}
//SRS in WMS 1.1.1
QDomNodeList srsList = layerElem.elementsByTagName( "SRS" );
for ( int i = 0; i < srsList.size(); ++i )
{
QString srsName = srsList.at( i ).toElement().text();
if ( i > 0 )
{
srsName.prepend( "," );
}
crs.append( srsName );
}
QDomNodeList styleList = layerElem.elementsByTagName( "Style" );
for ( int i = 0; i < styleList.size(); ++i )
{
QString styleName = styleList.at( i ).toElement().firstChildElement( "Name" ).text();
if ( i > 0 )
{
styleName.prepend( "," );
}
style.append( styleName );
}
QList<QStandardItem*> childItemList;
//name
QStandardItem* nameItem = new QStandardItem( name );
nameItem->setData( url );
childItemList.push_back( nameItem );
//favorite
QStandardItem* favoriteItem = new QStandardItem();
favoriteItem->setCheckable( true );
favoriteItem->setCheckState( Qt::Unchecked );
childItemList.push_back( favoriteItem );
//type
QStandardItem* typeItem = new QStandardItem( "WMS" );
childItemList.push_back( typeItem );
//in map
QStandardItem* inMapItem = new QStandardItem();
inMapItem->setCheckable( true );
inMapItem->setCheckState( Qt::Unchecked );
childItemList.push_back( inMapItem );
//status
QStandardItem* statusItem = new QStandardItem( QIcon( ":/niwa/icons/online.png" ), tr( "online" ) );
childItemList.push_back( statusItem );
//crs
QStandardItem* crsItem = new QStandardItem( crs );
childItemList.push_back( crsItem );
//formats
QStandardItem* formatsItem = new QStandardItem( formatList );
childItemList.push_back( formatsItem );
//styles
QStandardItem* stylesItem = new QStandardItem( style );
childItemList.push_back( stylesItem );
wmsTitleItem->appendRow( childItemList );
emit serviceAdded();
}
//mStatusLabel->setText( tr( "Ready" ) );
}
void WebDataModel::wfsCapabilitiesRequestFinished()
{
if ( !mCapabilitiesReply )
{
return;
}
if ( mCapabilitiesReply->error() != QNetworkReply::NoError )
{
//QMessageBox::critical( 0, tr( "Error" ), tr( "Capabilities could not be retrieved from the server" ) );
return;
}
QByteArray buffer = mCapabilitiesReply->readAll();
QString capabilitiesDocError;
QDomDocument capabilitiesDocument;
if ( !capabilitiesDocument.setContent( buffer, true, &capabilitiesDocError ) )
{
//QMessageBox::critical( 0, tr( "Error parsing capabilities document" ), capabilitiesDocError );
return;
}
QDomNodeList featureTypeList = capabilitiesDocument.elementsByTagNameNS( WFS_NAMESPACE, "FeatureType" );
if ( featureTypeList.size() < 1 )
{
return;
}
//add parentItem
QString serviceTitle = mCapabilitiesReply->property( "title" ).toString();
QList<QStandardItem*> serviceTitleItems = findItems( serviceTitle );
QStandardItem* wfsTitleItem = 0;
if ( serviceTitleItems.size() < 1 )
{
wfsTitleItem = new QStandardItem( serviceTitle );
invisibleRootItem()->setChild( invisibleRootItem()->rowCount(), wfsTitleItem );
}
else
{
wfsTitleItem = serviceTitleItems.at( 0 );
wfsTitleItem->removeRows( 0, wfsTitleItem->rowCount() );
}
QString url = mCapabilitiesReply->property( "url" ).toString();
wfsTitleItem->setFlags( Qt::ItemIsEnabled );
wfsTitleItem->setData( url );
QStandardItem* wfsTitleServiceItem = new QStandardItem( "WFS" );
invisibleRootItem()->setChild( invisibleRootItem()->rowCount() - 1 , 2, wfsTitleServiceItem );
wfsTitleItem->setFlags( Qt::ItemIsEnabled );
for ( unsigned int i = 0; i < featureTypeList.length(); ++i )
{
QString name, title, abstract, srs;
QDomElement featureTypeElem = featureTypeList.at( i ).toElement();
//Name
QDomNodeList nameList = featureTypeElem.elementsByTagNameNS( WFS_NAMESPACE, "Name" );
if ( nameList.length() > 0 )
{
name = nameList.at( 0 ).toElement().text();
}
//Title
QDomNodeList titleList = featureTypeElem.elementsByTagNameNS( WFS_NAMESPACE, "Title" );
if ( titleList.length() > 0 )
{
title = titleList.at( 0 ).toElement().text();
}
//Abstract
QDomNodeList abstractList = featureTypeElem.elementsByTagNameNS( WFS_NAMESPACE, "Abstract" );
if ( abstractList.length() > 0 )
{
abstract = abstractList.at( 0 ).toElement().text();
}
//SRS
QDomNodeList srsList = featureTypeElem.elementsByTagNameNS( WFS_NAMESPACE, "SRS" );
if ( srsList.length() > 0 )
{
srs = srsList.at( 0 ).toElement().text();
}
QList<QStandardItem*> childItemList;
//name
QStandardItem* nameItem = new QStandardItem( name );
nameItem->setData( url );
childItemList.push_back( nameItem );
//favorite
QStandardItem* favoriteItem = new QStandardItem();
favoriteItem->setCheckable( true );
favoriteItem->setCheckState( Qt::Unchecked );
childItemList.push_back( favoriteItem );
//type
QStandardItem* typeItem = new QStandardItem( "WFS" );
childItemList.push_back( typeItem );
//in map
QStandardItem* inMapItem = new QStandardItem();
inMapItem->setCheckable( true );
inMapItem->setCheckState( Qt::Unchecked );
childItemList.push_back( inMapItem );
//status
QStandardItem* statusItem = new QStandardItem( QIcon( ":/niwa/icons/online.png" ), tr( "online" ) );
childItemList.push_back( statusItem );
//crs
QStandardItem* srsItem = new QStandardItem( srs );
childItemList.push_back( srsItem );
wfsTitleItem->appendRow( childItemList );
}
emit serviceAdded();
}
void WebDataModel::handleItemChange( QStandardItem* item )
{
blockSignals( true );
if ( item->column() == 1 )
{
if ( item->checkState() == Qt::Checked )
{
item->setIcon( QIcon( ":/niwa/icons/favourite.png" ) );
}
else
{
item->setIcon( QIcon() ); //unset icon
}
}
else if ( item->column() == 3 ) //in map
{
if ( item->checkState() == Qt::Checked )
{
addEntryToMap( item->index().sibling( item->row(), 0 ) );
}
else
{
removeEntryFromMap( item->index().sibling( item->row(), 0 ) );
}
}
else if ( item->column() == 4 ) //online / offline
{
}
blockSignals( false );
}
void WebDataModel::syncLayerRemove( QStringList theLayerIds )
{
QSet<QString> idSet = theLayerIds.toSet();
//iterate the layer items
int serviceCount = invisibleRootItem()->rowCount();
QStandardItem* serviceItem = 0;
for ( int i = 0; i < serviceCount; ++i )
{
serviceItem = invisibleRootItem()->child( i, 0 );
if ( serviceItem )
{
int nLayers = serviceItem->rowCount();
for ( int j = 0; j < nLayers; ++j )
{
QStandardItem* inMapItem = serviceItem->child( j, 3 );
if ( !inMapItem )
{
continue;
}
if ( inMapItem->checkState() != Qt::Checked )
{
continue;
}
QString debug = inMapItem->data().toString();
if ( idSet.contains( inMapItem->data().toString() ) )
{
inMapItem->setCheckState( Qt::Unchecked );
}
}
}
}
}
void WebDataModel::addEntryToMap( const QModelIndex& index )
{
if ( !mIface )
{
return;
}
QString layername = layerName( index );
QString type = serviceType( index );//wms / wfs ?
QStandardItem* inMapItem = itemFromIndex( index.sibling( index.row(), 3 ) );
if ( !inMapItem || !inMapItem->checkState() == Qt::Checked )
{
return;
}
bool offline = layerStatus( index ).compare( "offline", Qt::CaseInsensitive ) == 0;
QStandardItem* statusItem = itemFromIndex( index.sibling( index.row(), 4 ) );
if ( !statusItem )
{
return;
}
QgsMapLayer* mapLayer = 0;
if ( type == "WMS" )
{
if ( offline )
{
mapLayer = mIface->addRasterLayer( statusItem->data().toString(), layername );
}
else
{
QgsDataSourceURI uri = wmsUriFromIndex( index );
mapLayer = mIface->addRasterLayer( uri.encodedUri(), layername, "wms" );
}
}
else if ( type == "WFS" )
{
QString url = wfsUrlFromLayerIndex( index );
if ( offline )
{
mapLayer = mIface->addVectorLayer( statusItem->data().toString(), layername, "ogr" );
}
else
{
mapLayer = mIface->addVectorLayer( url, layername, "WFS" );
}
if ( !mapLayer )
{
return;
}
}
inMapItem->setCheckState( Qt::Checked );
if ( mapLayer )
{
inMapItem->setData( mapLayer->id() );
}
}
void WebDataModel::removeEntryFromMap( const QModelIndex& index )
{
//is entry already in map
QStandardItem* inMapItem = itemFromIndex( index.sibling( index.row(), 3 ) );
/*bool inMap = ( inMapItem && inMapItem->checkState() == Qt::Checked );
if ( !inMap )
{
return;
}*/
QString layerId = inMapItem->data().toString();
QgsMapLayerRegistry::instance()->removeMapLayers( QStringList() << layerId );
inMapItem->setCheckState( Qt::Unchecked );
}
void WebDataModel::changeEntryToOffline( const QModelIndex& index )
{
//bail out if entry already has offline status
QString status = layerStatus( index );
if ( status.compare( "offline", Qt::CaseInsensitive ) == 0 )
{
return;
}
//wms / wfs ?
QString type = serviceType( index );
QString layername = layerName( index );
QString saveFilePath = QgsApplication::qgisSettingsDirPath() + "/cachelayers/";
QDateTime dt = QDateTime::currentDateTime();
QString layerId = layername + dt.toString( "yyyyMMddhhmmsszzz" );
bool inMap = layerInMap( index );
QString filePath;
QStandardItem* inMapItem = itemFromIndex( index.sibling( index.row(), 3 ) );
bool offlineOk = false;
if ( type == "WFS" )
{
//create table <layername//url>
QgsVectorLayer* wfsLayer = 0;
if ( inMap )
{
if ( inMapItem )
{
wfsLayer = static_cast<QgsVectorLayer*>( QgsMapLayerRegistry::instance()->mapLayer( inMapItem->data().toString() ) );
}
}
else
{
QString wfsUrl = wfsUrlFromLayerIndex( index );
wfsLayer = new QgsVectorLayer( wfsUrl, layername, "WFS" );
}
QApplication::setOverrideCursor( QCursor( Qt::WaitCursor ) );
filePath = saveFilePath + layerId + ".shp";
const QgsCoordinateReferenceSystem& layerCRS = wfsLayer->crs();
offlineOk = ( QgsVectorFileWriter::writeAsVectorFormat( wfsLayer, filePath,
"UTF-8", &layerCRS, "ESRI Shapefile" ) == QgsVectorFileWriter::NoError );
if ( offlineOk && inMap )
{
QgsVectorLayer* offlineLayer = mIface->addVectorLayer( filePath, layername, "ogr" );
if ( inMapItem )
{
exchangeLayer( inMapItem->data().toString(), offlineLayer );
blockSignals( true );
inMapItem->setData( offlineLayer->id() );
blockSignals( false );
}
}
QApplication::restoreOverrideCursor();
if ( !inMap )
{
delete wfsLayer;
}
}
else if ( type == "WMS" )
{
//get raster layer
QgsRasterLayer* wmsLayer = 0;
if ( inMap )
{
wmsLayer = static_cast<QgsRasterLayer*>( QgsMapLayerRegistry::instance()->mapLayer( inMapItem->data().toString() ) );
}
else
{
QgsDataSourceURI uri = wmsUriFromIndex( index );
wmsLayer = new QgsRasterLayer( uri.encodedUri(), layername, "wms" );
}
//call save as dialog
QgsRasterLayerSaveAsDialog d( wmsLayer, wmsLayer->dataProvider(), mIface->mapCanvas()->extent(), wmsLayer->crs(),
mIface->mapCanvas()->mapRenderer()->destinationCrs() );
d.hideFormat();
d.hideOutput();
if ( d.exec() == QDialog::Accepted )
{
QApplication::setOverrideCursor( QCursor( Qt::WaitCursor ) );
filePath = saveFilePath + "/" + layerId;
if ( !d.tileMode() )
{
QDir saveFileDir( saveFilePath );
saveFileDir.mkdir( layerId );
filePath += ( "/" + layerId + ".tif" );
}
QgsRasterFileWriter fileWriter( filePath );
if ( d.tileMode() )
{
fileWriter.setTiledMode( true );
fileWriter.setMaxTileWidth( d.maximumTileSizeX() );
fileWriter.setMaxTileHeight( d.maximumTileSizeY() );
}
QProgressDialog pd( 0, tr( "Abort..." ), 0, 0 );
pd.setWindowModality( Qt::WindowModal );
QgsRasterPipe* pipe = new QgsRasterPipe();
if ( !pipe->set( wmsLayer->dataProvider()->clone() ) )
{
QgsDebugMsg( "Cannot set pipe provider" );
return;
}
fileWriter.writeRaster( pipe, d.nColumns(), d.nRows(), d.outputRectangle(), wmsLayer->crs(), &pd );
if ( d.tileMode() )
{
filePath += ( "/" + layerId + ".vrt" );
}
offlineOk = true;
if ( inMap )
{
QgsRasterLayer* offlineLayer = mIface->addRasterLayer( filePath, layername );
exchangeLayer( inMapItem->data().toString(), offlineLayer );
blockSignals( true );
inMapItem->setData( offlineLayer->id() );
blockSignals( false );
}
else
{
delete wmsLayer;
}
QApplication::restoreOverrideCursor();
}
}
if ( offlineOk )
{
QStandardItem* statusItem = itemFromIndex( index.sibling( index.row(), 4 ) );
if ( statusItem )
{
statusItem->setText( "offline" );
statusItem->setIcon( QIcon( ":/niwa/icons/offline.png" ) );
statusItem->setData( filePath );
}
}
}
void WebDataModel::changeEntryToOnline( const QModelIndex& index )
{
bool inMap = layerInMap( index );
QString type = serviceType( index );
QString layername = layerName( index );
QStandardItem* inMapItem = itemFromIndex( index.sibling( index.row(), 3 ) );
if ( !inMapItem )
{
return;
}
QApplication::setOverrideCursor( QCursor( Qt::WaitCursor ) );
if ( inMap )
{
//generate new wfs/wms layer
//exchange with layer in map
QgsMapLayer* onlineLayer = 0;
if ( type == "WFS" )
{
QString wfsUrl = wfsUrlFromLayerIndex( index );
onlineLayer = mIface->addVectorLayer( wfsUrl, layername, "WFS" );
}
else if ( type == "WMS" )
{
//add to map
QgsDataSourceURI uri = wmsUriFromIndex( index );
onlineLayer = mIface->addRasterLayer( uri.encodedUri(), layername, "wms" );
}
if ( onlineLayer )
{
exchangeLayer( inMapItem->data().toString(), onlineLayer );
blockSignals( true );
inMapItem->setData( onlineLayer->id() );
blockSignals( false );
}
}
QStandardItem* statusItem = itemFromIndex( index.sibling( index.row(), 4 ) );
if ( !statusItem )
{
return;
}
QString offlineFileName = statusItem->data().toString();
deleteOfflineDatasource( type, offlineFileName );
statusItem->setText( "online" );
statusItem->setIcon( QIcon( ":/niwa/icons/online.png" ) );
statusItem->setData( "" );
}
void WebDataModel::reload( const QModelIndex& index )
{
QStandardItem* nameItem = itemFromIndex( index );
if ( !nameItem )
{
return;
}
QString name = layerName( index );
QString status = layerStatus( index );
QString type = serviceType( index );
if ( status.compare( "online", Qt::CaseInsensitive ) == 0 )
{
return;
}
else if ( status.isEmpty() ) //update service
{
addService( name, nameItem->data().toString(), type );
}
else if ( type.compare( "WMS", Qt::CaseInsensitive ) == 0
|| type.compare( "WFS", Qt::CaseInsensitive ) == 0 ) //update WMS layer
{
if ( mIface && mIface->mapCanvas() )
{
bool bkRenderFlag = mIface->mapCanvas()->renderFlag();
mIface->mapCanvas()->setRenderFlag( false );
changeEntryToOnline( index );
changeEntryToOffline( index );
mIface->mapCanvas()->setRenderFlag( bkRenderFlag );
}
}
}
QString WebDataModel::wfsUrlFromLayerIndex( const QModelIndex& index ) const
{
QStandardItem* nameItem = itemFromIndex( index );
if ( !nameItem )
{
return "";
}
QString url = nameItem->data().toString();
QString layerName = nameItem->text();
QStandardItem* srsItem = itemFromIndex( index.sibling( index.row(), 5 ) );
QString srs = srsItem->text();
url.append( "SERVICE=WFS&VERSION=1.0.0&REQUEST=GetFeature&TYPENAME=" );
url.append( layerName );
if ( !srs.isEmpty() )
{
url.append( "&SRSNAME=" + srs );
}
return url;
}
QgsDataSourceURI WebDataModel::wmsUriFromIndex( const QModelIndex& index ) const
{
QStandardItem* nameItem = itemFromIndex( index );
if ( !nameItem )
{
return QgsDataSourceURI();
}
//get name of parent item
QStandardItem* parentItem = nameItem->parent();
if ( !parentItem )
{
return QgsDataSourceURI();
}
//QgsWMSConnection wmsConnection( parentItem->text() );
QgsDataSourceURI uri; // = wmsConnection.uri();
uri.setParam( "url", nameItem->data().toString() );
//ignore advertised GetMap / GetFeatureInfo urls per derfault
uri.setParam( "IgnoreGetMapUrl", "1" );
uri.setParam( "IgnoreGetFeatureInfoUrl", "1" );
//name
uri.setParam( "layers", nameItem->text() );
//format: prefer png
QString format;
QStandardItem* formatItem = itemFromIndex( index.sibling( index.row(), 6 ) );
if ( formatItem )
{
QStringList formatList = formatItem->text().split( "," );
if ( formatList.size() > 0 )
{
if ( formatList.contains( "image/png" ) )
{
format = "image/png";
}
else
{
format = formatList.at( 0 );
}
}
}
uri.setParam( "format", format );
//CRS: prefer map crs
QString crs;
QStandardItem* crsItem = itemFromIndex( index.sibling( index.row(), 5 ) );
if ( crsItem && mIface )
{
QStringList crsList = crsItem->text().split( "," );
if ( crsList.size() > 0 )
{
crs = crsList.at( 0 );
QgsMapCanvas* canvas = mIface->mapCanvas();
if ( canvas )
{
QgsMapRenderer* renderer = canvas->mapRenderer();
if ( renderer )
{
const QgsCoordinateReferenceSystem& destCRS = renderer->destinationCrs();
QString authId = destCRS.authid();
if ( crsList.contains( authId ) )
{
crs = authId;
}
}
}
}
}
uri.setParam( "crs", crs );
//styles
QString styles;
QStandardItem* stylesItem = itemFromIndex( index.sibling( index.row(), 7 ) );
if ( stylesItem )
{
//take first style
QString stylesString = stylesItem->text();
if ( stylesString.isEmpty() )
{
styles.append( "" );
}
else
{
styles.append( stylesString.split( "," ).at( 0 ) );
}
}
uri.setParam( "styles", styles );
return uri;
}
QString WebDataModel::layerName( const QModelIndex& index ) const
{
QStandardItem* nameItem = itemFromIndex( index );
if ( nameItem )
{
return nameItem->text();
}
return QString();
}
QString WebDataModel::serviceType( const QModelIndex& index ) const
{
//wms / wfs ?
QStandardItem* typeItem = itemFromIndex( index.sibling( index.row(), 2 ) );
if ( typeItem )
{
return typeItem->text();
}
return QString();
}
QString WebDataModel::layerStatus( const QModelIndex& index ) const
{
QStandardItem* statusItem = itemFromIndex( index.sibling( index.row(), 4 ) );
if ( statusItem )
{
return statusItem->text();
}
return QString();
}
bool WebDataModel::layerInMap( const QModelIndex& index ) const
{
QStandardItem* inMapItem = itemFromIndex( index.sibling( index.row(), 3 ) );
return ( inMapItem && inMapItem->checkState() == Qt::Checked );
}
bool WebDataModel::exchangeLayer( const QString& layerId, QgsMapLayer* newLayer )
{
if ( !mIface )
{
return false;
}
QgsMapLayer* oldLayer = QgsMapLayerRegistry::instance()->mapLayer( layerId );
if ( !oldLayer || !newLayer )
{
return false;
}
if ( newLayer->type() == QgsMapLayer::VectorLayer )
{
QgsVectorLayer* newVectorLayer = static_cast<QgsVectorLayer*>( newLayer );
QgsVectorLayer* oldVectorLayer = static_cast<QgsVectorLayer*>( oldLayer );
//write old style
QDomDocument vectorQMLDoc;
QDomElement qmlRootElem = vectorQMLDoc.createElement( "qgis" );
vectorQMLDoc.appendChild( qmlRootElem );
QString errorMessage;
if ( !oldVectorLayer->writeSymbology( qmlRootElem, vectorQMLDoc, errorMessage ) )
{
return false;
}
//set old style to new layer
if ( !newVectorLayer->readSymbology( qmlRootElem, errorMessage ) )
{
return false;
}
}
//move new layer next to the old one
//remove old layer
QgsLegendInterface* legendIface = mIface->legendInterface();
if ( legendIface )
{
legendMoveLayer( newLayer, oldLayer );
legendIface->refreshLayerSymbology( newLayer );
}
disconnect( QgsMapLayerRegistry::instance(), SIGNAL( layersWillBeRemoved( QStringList ) ), this,
SLOT( syncLayerRemove( QStringList ) ) );
QgsMapLayerRegistry::instance()->removeMapLayers( QStringList() << layerId );
connect( QgsMapLayerRegistry::instance(), SIGNAL( layersWillBeRemoved( QStringList ) ), this,
SLOT( syncLayerRemove( QStringList ) ) );
return false;
}
void WebDataModel::deleteOfflineDatasource( const QString& serviceType, const QString& offlinePath )
{
if ( serviceType == "WFS" )
{
QgsVectorFileWriter::deleteShapeFile( offlinePath );
}
else if ( serviceType == "WMS" )
{
//remove files in directory
QDir rasterFileDir( QFileInfo( offlinePath ).absolutePath() ); //raster offline is always in a directory
QFileInfoList rasterFileList = rasterFileDir.entryInfoList( QDir::Files | QDir::NoDotAndDotDot );
QFileInfoList::iterator it = rasterFileList.begin();
for ( ; it != rasterFileList.end(); ++it )
{
QFile::remove( it->absoluteFilePath() );
}
//remove the directory itself
QString dirName = rasterFileDir.dirName();
if ( rasterFileDir.cdUp() )
{
rasterFileDir.rmdir( dirName );
}
}
}
QString WebDataModel::layerIdFromUrl( const QString& url, const QString& serviceType, bool online,
const QString& layerName )
{
const QMap<QString, QgsMapLayer*>& layerMap = QgsMapLayerRegistry::instance()->mapLayers();
QMap<QString, QgsMapLayer*>::const_iterator layerIt = layerMap.constBegin();
for ( ; layerIt != layerMap.constEnd(); ++layerIt )
{
const QgsMapLayer* layer = layerIt.value();
if ( !online )
{
if ( layer && QFileInfo( layer->source() ) == QFileInfo( url ) )
{
return layer->id();
}
}
else if ( serviceType == "WFS" )
{
QString layerSource = layer->source();
QString layerUrl = url;
if ( layerSource.startsWith( layerUrl )
&& layerSource.contains( "TYPENAME=" + layerName, Qt::CaseInsensitive ) )
{
return layer->id();
}
}
else //for online WMS, we need to additionally consider the layer name
{
QString layerSource = layer->source();
if ( layerSource.contains( url ) && layerSource.contains( "&layers=" + QUrl::toPercentEncoding( layerName ),
Qt::CaseInsensitive ) )
{
return layer->id();
}
}
}
return QString();
}