19#include "moc_qgsmaplayermodel.cpp"
27 : QAbstractItemModel( parent )
28 , mProject( project ? project :
QgsProject::instance() )
35 : QAbstractItemModel( parent )
36 , mProject( project ? project :
QgsProject::instance() )
79 QMap<QString, Qt::CheckState>::iterator i =
mLayersChecked.begin();
91 if ( allowEmpty == mAllowEmpty )
96 beginInsertRows( QModelIndex(), 0, 0 );
102 beginRemoveRows( QModelIndex(), 0, 0 );
114 emit dataChanged(
index( 0, 0 ),
index(
rowCount() - 1, 0 ), QVector<int>() << Qt::DisplayRole );
119 QList<QgsMapLayer *> layers;
120 const auto constMLayers =
mLayers;
125 layers.append( layer );
133 QMap<QString, Qt::CheckState>::iterator i =
mLayersChecked.begin();
142 emit dataChanged(
index( 0, 0 ),
index(
rowCount() - 1, 0 ), QVector<int>() << Qt::CheckStateRole );
147 int r =
mLayers.indexOf( layer );
148 if ( r >= 0 && mAllowEmpty )
150 return index( r, 0 );
160 if ( items == mAdditionalItems )
170 if ( !mAdditionalItems.isEmpty() )
172 beginRemoveRows( QModelIndex(), offset, offset + mAdditionalItems.count() - 1 );
173 mAdditionalItems.clear();
178 beginInsertRows( QModelIndex(), offset, offset + items.count() - 1 );
179 mAdditionalItems = items;
188 QStringList layerIdsToRemove;
192 layerIdsToRemove << layer->id();
201 const QString layerId = layer->id();
220 for (
const QString &layerId : layerIds )
222 QModelIndex startIndex =
index( 0, 0 );
223 QModelIndexList list = match( startIndex,
static_cast< int >(
CustomRole::LayerId ), layerId, 1 );
224 if ( !list.isEmpty() )
226 QModelIndex
index = list[0];
227 beginRemoveRows( QModelIndex(),
index.row(),
index.row() );
237 if ( !layers.empty( ) )
243 beginInsertRows( QModelIndex(),
mLayers.count() + offset,
mLayers.count() + layers.count() - 1 + offset );
244 const auto constLayers = layers;
260 if ( hasIndex( row, column,
parent ) )
263 if ( row - offset >= 0 && row - offset <
mLayers.count() )
264 layer =
mLayers.at( row - offset );
266 return createIndex( row, column, layer );
269 return QModelIndex();
276 return QModelIndex();
285 return ( mAllowEmpty ? 1 : 0 ) +
mLayers.length() + mAdditionalItems.count();
297 if ( !
index.isValid() )
300 bool isEmpty =
index.row() == 0 && mAllowEmpty;
301 int additionalIndex =
index.row() - ( mAllowEmpty ? 1 : 0 ) -
mLayers.count();
305 case Qt::DisplayRole:
308 if (
index.row() == 0 && mAllowEmpty )
311 if ( additionalIndex >= 0 )
312 return mAdditionalItems.at( additionalIndex );
318 if ( !mShowCrs || !layer->
isSpatial() || role == Qt::EditRole )
320 return layer->
name();
324 return tr(
"%1 [%2]" ).arg( layer->
name(), layer->
crs().
authid() );
330 if ( isEmpty || additionalIndex >= 0 )
334 return layer ? layer->
id() : QVariant();
339 if ( isEmpty || additionalIndex >= 0 )
342 return QVariant::fromValue<QgsMapLayer *>(
mLayers.value(
index.row() - ( mAllowEmpty ? 1 : 0 ) ) );
349 return additionalIndex >= 0;
351 case Qt::CheckStateRole:
355 if ( isEmpty || additionalIndex >= 0 )
365 case Qt::ToolTipRole:
372 if ( title.isEmpty() )
373 title = layer->
name();
374 title =
"<b>" + title +
"</b>";
377 QString layerCrs = layer->
crs().
authid();
382 if (
QgsVectorLayer *vl = qobject_cast<QgsVectorLayer *>( layer ) )
385 title = tr(
"%1 (%2)" ).arg( title, layerCrs );
390 if ( !abstract.isEmpty() )
391 parts <<
"<br/>" + abstract.replace( QLatin1String(
"\n" ), QLatin1String(
"<br/>" ) );
393 return parts.join( QLatin1String(
"<br/>" ) );
398 case Qt::DecorationRole:
401 return mEmptyIcon.isNull() ? QVariant() : mEmptyIcon;
403 if ( additionalIndex >= 0 )
422 QHash<int, QByteArray> roles = QAbstractItemModel::roleNames();
431 if ( !
index.isValid() )
434 return Qt::ItemIsDropEnabled;
436 return Qt::ItemFlags();
439 bool isEmpty =
index.row() == 0 && mAllowEmpty;
440 int additionalIndex =
index.row() - ( mAllowEmpty ? 1 : 0 ) -
mLayers.count();
442 Qt::ItemFlags
flags = Qt::ItemIsEnabled | Qt::ItemIsSelectable;
444 if (
mCanReorder && !isEmpty && additionalIndex < 0 )
446 flags |= Qt::ItemIsDragEnabled;
451 flags |= Qt::ItemIsUserCheckable;
465 beginInsertRows(
parent, row, row + count - 1 );
466 for (
int i = row; i < row + count; ++i )
467 mLayers.insert( i - offset,
nullptr );
475 if (
parent.isValid() || row < 0 )
487 if ( row - offset >
mLayers.count() - 1 )
492 beginRemoveRows(
parent, row, row + count - 1 );
493 for (
int i = 0; i != count; ++i )
494 mLayers.removeAt( row - offset );
503 types << QStringLiteral(
"application/qgis.layermodeldata" );
509 if ( !
mCanReorder || action != Qt::MoveAction || !
data->hasFormat( QStringLiteral(
"application/qgis.layermodeldata" ) ) )
516 std::unique_ptr< QMimeData >
mimeData = std::make_unique< QMimeData >();
518 QByteArray encodedData;
519 QDataStream stream( &encodedData, QIODevice::WriteOnly );
520 QSet< QString > addedLayers;
522 for (
const QModelIndex &i : indexes )
527 if ( !addedLayers.contains(
id ) )
529 addedLayers.insert(
id );
534 mimeData->setData( QStringLiteral(
"application/qgis.layermodeldata" ), encodedData );
543 if ( action == Qt::IgnoreAction )
545 else if ( action != Qt::MoveAction )
548 QByteArray encodedData =
data->data( QStringLiteral(
"application/qgis.layermodeldata" ) );
549 QDataStream stream( &encodedData, QIODevice::ReadOnly );
550 QStringList newItems;
553 while ( !stream.atEnd() )
562 for (
const QString &text : std::as_const( newItems ) )
564 QModelIndex idx =
index( row, 0, QModelIndex() );
574 return Qt::MoveAction;
584 if ( !
index.isValid() )
587 bool isEmpty =
index.row() == 0 && mAllowEmpty;
588 int additionalIndex =
index.row() - ( mAllowEmpty ? 1 : 0 ) -
mLayers.count();
592 case Qt::CheckStateRole:
594 if ( !isEmpty && additionalIndex < 0 )
598 emit dataChanged(
index,
index, QVector< int >() << Qt::CheckStateRole );
605 if ( !isEmpty && additionalIndex < 0 )
bool isValid() const
Returns whether this CRS is correctly initialized and usable.
double coordinateEpoch() const
Returns the coordinate epoch, as a decimal year.
static QIcon iconForLayer(const QgsMapLayer *layer)
Returns the icon corresponding to a specified map layer.
QList< QPointer< QgsMapLayer > > mAdditionalLayers
void setShowCrs(bool showCrs)
Sets whether the CRS of layers is also included in the model's display role.
void setItemsCanBeReordered(bool allow)
Sets whether items in the model can be reordered via drag and drop.
QHash< int, QByteArray > roleNames() const override
Returns strings for all roles supported by this model.
Qt::ItemFlags flags(const QModelIndex &index) const override
bool canDropMimeData(const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent) const override
int rowCount(const QModelIndex &parent=QModelIndex()) const override
QList< QgsMapLayer * > layersChecked(Qt::CheckState checkState=Qt::Checked)
layersChecked returns the list of layers which are checked (or unchecked)
QVariant data(const QModelIndex &index, int role=Qt::DisplayRole) const override
bool insertRows(int row, int count, const QModelIndex &parent=QModelIndex()) override
QModelIndex parent(const QModelIndex &child) const override
void setProject(QgsProject *project)
Sets the QgsProject from which map layers are shown.
bool removeRows(int row, int count, const QModelIndex &parent=QModelIndex()) override
QModelIndex index(int row, int column, const QModelIndex &parent=QModelIndex()) const override
QModelIndex indexFromLayer(QgsMapLayer *layer) const
indexFromLayer returns the model index for a given layer
void setAllowEmptyLayer(bool allowEmpty, const QString &text=QString(), const QIcon &icon=QIcon())
Sets whether an optional empty layer ("not set") option is present in the model.
void setAdditionalItems(const QStringList &items)
Sets a list of additional (non map layer) items to include at the end of the model.
QList< QgsMapLayer * > additionalLayers() const
Returns the list of additional layers added to the model.
int columnCount(const QModelIndex &parent=QModelIndex()) const override
void setItemsCheckable(bool checkable)
setItemsCheckable defines if layers should be selectable in the widget
static QIcon iconForLayer(QgsMapLayer *layer)
Returns the icon corresponding to a specified map layer.
bool setData(const QModelIndex &index, const QVariant &value, int role=Qt::EditRole) override
QgsMapLayer * layerFromIndex(const QModelIndex &index) const
Returns the map layer corresponding to the specified index.
Qt::DropActions supportedDropActions() const override
void setLayersChecked(const QList< QgsMapLayer * > &layers)
Sets which layers are checked in the model.
void checkAll(Qt::CheckState checkState)
checkAll changes the checkstate for all the layers
void removeLayers(const QStringList &layerIds)
QStringList mimeTypes() const override
@ Additional
True if index corresponds to an additional (non map layer) item.
@ Layer
Stores pointer to the map layer itself.
@ LayerId
Stores the map layer ID.
@ Empty
True if index corresponds to the empty (not set) value.
bool dropMimeData(const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent) override
bool itemsCanBeReordered() const
Returns true if items in the model can be reordered via drag and drop.
QMap< QString, Qt::CheckState > mLayersChecked
QgsMapLayerModel(QObject *parent=nullptr, QgsProject *project=nullptr)
QgsMapLayerModel creates a model to display layers in widgets.
QList< QgsMapLayer * > mLayers
void setAdditionalLayers(const QList< QgsMapLayer * > &layers)
Sets a list of additional layers to include in the model.
void addLayers(const QList< QgsMapLayer * > &layers)
QMimeData * mimeData(const QModelIndexList &indexes) const override
QString title() const
Returns the title of the layer used by QGIS Server in GetCapabilities request.
QString shortName() const
Returns the short name of the layer used by QGIS Server to identify the layer.
QString abstract() const
Returns the abstract of the layerused by QGIS Server in GetCapabilities request.
Base class for all map layer types.
virtual bool isSpatial() const
Returns true if the layer is considered a spatial layer, ie it has some form of geometry associated w...
QgsCoordinateReferenceSystem crs
QgsMapLayerServerProperties * serverProperties()
Returns QGIS Server Properties for the map layer.
QgsLayerMetadata metadata
QString publicSource(bool hidePassword=false) const
Gets a version of the internal layer definition that has sensitive bits removed (for example,...
void willBeDeleted()
Emitted in the destructor when the layer is about to be deleted, but it is still in a perfectly valid...
Encapsulates a QGIS project, including sets of map layers and their styles, layouts,...
static QgsProject * instance()
Returns the QgsProject singleton instance.
Q_INVOKABLE QgsMapLayer * mapLayer(const QString &layerId) const
Retrieve a pointer to a registered layer by layer ID.
void layersWillBeRemoved(const QStringList &layerIds)
Emitted when one or more layers are about to be removed from the registry.
void layersAdded(const QList< QgsMapLayer * > &layers)
Emitted when one or more layers were added to the registry.
QMap< QString, QgsMapLayer * > mapLayers(const bool validOnly=false) const
Returns a map of all registered layers by layer ID.
Represents a vector layer which manages a vector based data sets.
static QString displayString(Qgis::WkbType type)
Returns a non-translated display string type for a WKB type, e.g., the geometry name used in WKT geom...
QString qgsDoubleToString(double a, int precision=17)
Returns a string representation of a double.