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Added QgsLayerMetadata logic to QgsDataProvider. Added setMetadata in…

… QgsVector/RasterLayer::setDataProvider. Corrections in QgsMetadataWidget with added get/setMetadata and hasChanged functions plus checking for set mLayer pointer before use.
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mj10777 authored and nyalldawson committed Feb 20, 2018
1 parent 2571de3 commit 0548f4267e017704b9ebbf257e9f18b018a69635
@@ -618,6 +618,7 @@ Stores state in Dom node
:return: true if successful
%End


};


@@ -362,6 +362,27 @@ The default implementation does nothing.
%End


virtual QgsLayerMetadata layerMetadata() const;
%Docstring
Retrieve collected Metadata from the Provider source
A structured metadata store for a map layer.
\note

.. seealso:: :py:func:`setLayerMetadata`

.. versionadded:: 3.0
%End
virtual bool setLayerMetadata( const QgsLayerMetadata &layerMetadata );
%Docstring
Set collected Metadata from the Provider source
A structured metadata store for a map layer.
\note

.. seealso:: :py:func:`layerMetadata`

.. versionadded:: 3.0
%End

signals:

void fullExtentCalculated();
@@ -26,16 +26,52 @@ class QgsMetadataWidget : QWidget
QgsMetadataWidget( QWidget *parent, QgsMapLayer *layer = 0 );
%Docstring
Constructor for the wizard.
\note
For use with a source \layer. This constructor automatically sets the widget's metadata() if the ``layer`` pointer is valid.
calls setMetadata, using mMetadata

:param layer: to set the main QgsLayerMetadata with mLayer->metadata() when not None

.. seealso:: :py:func:`setMetadata`
%End

void setMetadata( const QgsLayerMetadata &layerMetadata );
%Docstring
Sets the ``metadata`` to display in the widget
\note
Called from constructor and initializes child widget on first use
Can be called from outside to change the QgsLayerMetadata object.

.. seealso:: :py:func:`metadata`
%End

QgsLayerMetadata metadata();
%Docstring
Retrieves a QgsLayerMetadata object representing the current state of the widget.
\note
saveMetdata is called before returning :py:class:`QgsLayerMetadata`

.. seealso:: :py:func:`saveMetadata`
%End

void saveMetadata( QgsLayerMetadata &layerMetadata );
%Docstring
Save all fields in a QgsLayerMetadata object.

.. seealso:: :py:func:`getMetadata`

.. seealso:: :py:func:`acceptMetadata`

.. seealso:: :py:func:`checkMetadata`
%End

bool checkMetadata();
%Docstring
Check if values in the wizard are correct.

.. seealso:: :py:func:`updatePanel`

.. seealso:: :py:func:`saveMetadata`
%End

void crsChanged();
@@ -767,3 +767,26 @@ void QgsLayerMetadata::Extent::setTemporalExtents( const QList<QgsDateTimeRange>
{
mTemporalExtents = temporalExtents;
}

bool QgsLayerMetadata::operator==( const QgsLayerMetadata &metadataOther ) const
{
return ( ( parentIdentifier() == metadataOther.parentIdentifier() ) &&
( identifier() == metadataOther.identifier() ) &&
( language() == metadataOther.language() ) &&
( type() == metadataOther.type() ) &&
( title() == metadataOther.title() ) &&
( abstract() == metadataOther.abstract() ) &&
( fees() == metadataOther.fees() ) &&
( rights() == metadataOther.rights() ) &&
( licenses() == metadataOther.licenses() ) &&
( history() == metadataOther.history() ) &&
( encoding() == metadataOther.encoding() ) &&
( crs() == metadataOther.crs() ) &&
( keywords() == metadataOther.keywords() ) &&
( categories() == metadataOther.categories() ) &&
// QgsLayerMetadata::ConstraintList, LinkList, Extent, ContactList need to be delt with properly
( constraints().count() == metadataOther.constraints().count() ) &&
( extent().spatialExtents().count() == metadataOther.extent().spatialExtents().count() ) &&
( contacts().count() == metadataOther.contacts().count() ) &&
( links().count() == metadataOther.links().count() ) );
}
@@ -726,6 +726,11 @@ class CORE_EXPORT QgsLayerMetadata
*/
bool writeMetadataXml( QDomElement &metadataElement, QDomDocument &document ) const;

/**
* Compares two features
*/
bool operator==( const QgsLayerMetadata &metadataOther ) const SIP_SKIP;

private:

/*
@@ -24,6 +24,7 @@

//#include "qgsdataitem.h"
#include "qgsdatasourceuri.h"
#include "qgslayermetadata.h"
#include "qgserror.h"

typedef int dataCapabilities_t(); // SIP_SKIP
@@ -492,6 +493,24 @@ class CORE_EXPORT QgsDataProvider : public QObject
*/
virtual bool renderInPreview( const QgsDataProvider::PreviewContext &context ); // SIP_SKIP

/**
* Retrieve collected Metadata from the Provider source
* \brief A structured metadata store for a map layer.
* \note
* \see setLayerMetadata
* \since QGIS 3.0
*/
virtual QgsLayerMetadata layerMetadata() const { return QgsLayerMetadata(); };

/**
* Set collected Metadata from the Provider source
* \brief A structured metadata store for a map layer.
* \note
* \see layerMetadata
* \since QGIS 3.0
*/
virtual bool setLayerMetadata( const QgsLayerMetadata &layerMetadata ) { Q_UNUSED( layerMetadata ); return false; }

signals:

/**
@@ -1526,6 +1526,9 @@ bool QgsVectorLayer::setDataProvider( QString const &provider )
return false;
}

setMetadata( mDataProvider->layerMetadata() );
QgsDebugMsgLevel( QString( "Set Data provider QgsLayerMetadata identifier[%1]" ).arg( metadata().identifier() ), 4 );

// TODO: Check if the provider has the capability to send fullExtentCalculated
connect( mDataProvider, &QgsVectorDataProvider::fullExtentCalculated, this, [ = ] { updateExtents(); } );

@@ -625,6 +625,9 @@ void QgsRasterLayer::setDataProvider( QString const &provider )
return;
}

setMetadata( mDataProvider->layerMetadata() );
QgsDebugMsgLevel( QString( "Set Data provider QgsLayerMetadata identifier[%1]" ).arg( metadata().identifier() ), 4 );

if ( provider == QLatin1String( "gdal" ) )
{
// make sure that the /vsigzip or /vsizip is added to uri, if applicable
@@ -35,7 +35,10 @@ QgsMetadataWidget::QgsMetadataWidget( QWidget *parent, QgsMapLayer *layer )
mLayer( layer )
{
setupUi( this );
mMetadata = layer->metadata();
if ( mLayer )
{
mMetadata = mLayer->metadata();
}
tabWidget->setCurrentIndex( 0 );

// Disable the encoding
@@ -107,15 +110,36 @@ QgsMetadataWidget::QgsMetadataWidget( QWidget *parent, QgsMapLayer *layer )
connect( btnRemoveCategory, &QPushButton::clicked, this, &QgsMetadataWidget::removeSelectedCategories );

fillComboBox();
if ( !mLayer )
{
btnAutoSource->setEnabled( false );
btnAutoEncoding->setEnabled( false );
btnAutoCrs->setEnabled( false );
}
setMetadata( mMetadata );
}

void QgsMetadataWidget::setMetadata( const QgsLayerMetadata &layerMetadata )
{
mMetadata = layerMetadata;
setPropertiesFromLayer();
}

void QgsMetadataWidget::fillSourceFromLayer()
QgsLayerMetadata QgsMetadataWidget::metadata()
{
lineEditIdentifier->setText( mLayer->publicSource() );
saveMetadata( mMetadata );
return mMetadata;
}

void QgsMetadataWidget::addVocabulary()
void QgsMetadataWidget::fillSourceFromLayer() const
{
if ( mLayer )
{
lineEditIdentifier->setText( mLayer->publicSource() );
}
}

void QgsMetadataWidget::addVocabulary() const
{
int row = tabKeywords->rowCount();
tabKeywords->setRowCount( row + 1 );
@@ -130,7 +154,7 @@ void QgsMetadataWidget::addVocabulary()
tabKeywords->setItem( row, 1, pCell );
}

void QgsMetadataWidget::removeSelectedVocabulary()
void QgsMetadataWidget::removeSelectedVocabulary() const
{
QItemSelectionModel *selectionModel = tabKeywords->selectionModel();
const QModelIndexList selectedRows = selectionModel->selectedRows();
@@ -152,7 +176,7 @@ void QgsMetadataWidget::addLicence()
}
}

void QgsMetadataWidget::removeSelectedLicence()
void QgsMetadataWidget::removeSelectedLicence() const
{
QItemSelectionModel *selectionModel = tabLicenses->selectionModel();
const QModelIndexList selectedRows = selectionModel->selectedRows();
@@ -173,7 +197,7 @@ void QgsMetadataWidget::addRight()
}
}

void QgsMetadataWidget::removeSelectedRight()
void QgsMetadataWidget::removeSelectedRight() const
{
QItemSelectionModel *selection = listRights->selectionModel();
if ( selection->hasSelection() )
@@ -187,22 +211,22 @@ void QgsMetadataWidget::removeSelectedRight()
}
}

void QgsMetadataWidget::addConstraint()
void QgsMetadataWidget::addConstraint() const
{
int row = mConstraintsModel->rowCount();
mConstraintsModel->setItem( row, 0, new QStandardItem( QString( tr( "undefined %1" ) ).arg( row + 1 ) ) );
mConstraintsModel->setItem( row, 1, new QStandardItem( QString( tr( "undefined %1" ) ).arg( row + 1 ) ) );
}

void QgsMetadataWidget::removeSelectedConstraint()
void QgsMetadataWidget::removeSelectedConstraint() const
{
const QModelIndexList selectedRows = tabConstraints->selectionModel()->selectedRows();
mConstraintsModel->removeRow( selectedRows[0].row() );
}

void QgsMetadataWidget::crsChanged()
void QgsMetadataWidget::crsChanged() const
{
if ( mCrs.isValid() )
if ( ( mCrs.isValid() ) && ( mLayer ) )
{
lblCurrentCrs->setText( tr( "CRS: %1 - %2" ).arg( mCrs.authid(), mCrs.description() ) );
spatialExtentSelector->setEnabled( true );
@@ -233,7 +257,7 @@ void QgsMetadataWidget::crsChanged()
}
}

void QgsMetadataWidget::addAddress()
void QgsMetadataWidget::addAddress() const
{
int row = tabAddresses->rowCount();
tabAddresses->setRowCount( row + 1 );
@@ -259,7 +283,7 @@ void QgsMetadataWidget::addAddress()
tabAddresses->setItem( row, 5, new QTableWidgetItem() );
}

void QgsMetadataWidget::removeSelectedAddress()
void QgsMetadataWidget::removeSelectedAddress() const
{
QItemSelectionModel *selectionModel = tabAddresses->selectionModel();
const QModelIndexList selectedRows = selectionModel->selectedRows();
@@ -281,7 +305,7 @@ void QgsMetadataWidget::fillCrsFromProvider()
crsChanged();
}

void QgsMetadataWidget::addLink()
void QgsMetadataWidget::addLink() const
{
int row = mLinksModel->rowCount();
mLinksModel->setItem( row, 0, new QStandardItem( QString( tr( "undefined %1" ) ).arg( row + 1 ) ) );
@@ -293,7 +317,7 @@ void QgsMetadataWidget::addLink()
mLinksModel->setItem( row, 6, new QStandardItem() );
}

void QgsMetadataWidget::removeSelectedLink()
void QgsMetadataWidget::removeSelectedLink() const
{
const QModelIndexList selectedRows = tabLinks->selectionModel()->selectedRows();
mLinksModel->removeRow( selectedRows[0].row() );
@@ -310,7 +334,7 @@ void QgsMetadataWidget::addHistory()
}
}

void QgsMetadataWidget::removeSelectedHistory()
void QgsMetadataWidget::removeSelectedHistory() const
{
QItemSelectionModel *selection = listHistory->selectionModel();
if ( selection->hasSelection() )
@@ -324,7 +348,7 @@ void QgsMetadataWidget::removeSelectedHistory()
}
}

void QgsMetadataWidget::fillComboBox()
void QgsMetadataWidget::fillComboBox() const
{
// Set default values in type combobox
// It is advised to use the ISO 19115 MD_ScopeCode values. E.g. 'dataset' or 'series'.
@@ -522,7 +546,7 @@ void QgsMetadataWidget::setPropertiesFromLayer()
mHistoryModel->setStringList( mMetadata.history() );
}

void QgsMetadataWidget::saveMetadata( QgsLayerMetadata &layerMetadata )
void QgsMetadataWidget::saveMetadata( QgsLayerMetadata &layerMetadata ) const
{
layerMetadata.setParentIdentifier( lineEditParentId->text() );
layerMetadata.setIdentifier( lineEditIdentifier->text() );
@@ -635,7 +659,7 @@ void QgsMetadataWidget::saveMetadata( QgsLayerMetadata &layerMetadata )
layerMetadata.setHistory( mHistoryModel->stringList() );
}

bool QgsMetadataWidget::checkMetadata()
bool QgsMetadataWidget::checkMetadata() const
{
QgsLayerMetadata metadata = QgsLayerMetadata();
saveMetadata( metadata );
@@ -815,9 +839,11 @@ void QgsMetadataWidget::setMapCanvas( QgsMapCanvas *canvas )
void QgsMetadataWidget::acceptMetadata()
{
saveMetadata( mMetadata );

// Save layer metadata properties
mLayer->setMetadata( mMetadata );
if ( mLayer )
{
// Save layer metadata properties
mLayer->setMetadata( mMetadata );
}
}

void QgsMetadataWidget::setMetadata( const QgsLayerMetadata &metadata )
@@ -826,7 +852,7 @@ void QgsMetadataWidget::setMetadata( const QgsLayerMetadata &metadata )
setPropertiesFromLayer();
}

void QgsMetadataWidget::syncFromCategoriesTabToKeywordsTab()
void QgsMetadataWidget::syncFromCategoriesTabToKeywordsTab() const
{
if ( mCategoriesModel->rowCount() > 0 )
{
@@ -847,7 +873,7 @@ void QgsMetadataWidget::syncFromCategoriesTabToKeywordsTab()
}
}

void QgsMetadataWidget::updatePanel()
void QgsMetadataWidget::updatePanel() const
{
int index = tabWidget->currentIndex();
QString currentTabText = tabWidget->widget( index )->objectName();

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