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Add a changed signal to QgsRelationManager

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This commit is contained in:
Nyall Dawson 2014-09-20 22:12:26 +10:00
parent 808464fed6
commit fb2279f620
3 changed files with 25 additions and 1 deletions
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6
python/core/qgsrelationmanager.sip
View File

@ -22,4 +22,10 @@ class QgsRelationManager : QObject
signals:
void relationsLoaded();
/**
* Emitted when relations are added or removed to the manager.
* @note added in QGIS 2.5
*/
void changed();
};

14
src/core/qgsrelationmanager.cpp
View File

@ -37,6 +37,7 @@ void QgsRelationManager::setRelations( const QList<QgsRelation>& relations )
{
addRelation( rel );
}
emit changed();
}
const QMap<QString, QgsRelation>& QgsRelationManager::relations() const
@ -52,16 +53,19 @@ void QgsRelationManager::addRelation( const QgsRelation& relation )
mRelations.insert( relation.id(), relation );
mProject->dirty( true );
emit changed();
}
void QgsRelationManager::removeRelation( const QString& name )
{
mRelations.remove( name );
emit changed();
}
void QgsRelationManager::removeRelation( const QgsRelation& relation )
{
mRelations.remove( relation.id() );
emit changed();
}
QgsRelation QgsRelationManager::relation( const QString& id ) const
@ -72,6 +76,7 @@ QgsRelation QgsRelationManager::relation( const QString& id ) const
void QgsRelationManager::clear()
{
mRelations.clear();
emit changed();
}
QList<QgsRelation> QgsRelationManager::referencingRelations( QgsVectorLayer* layer, int fieldIdx ) const
@ -152,6 +157,7 @@ void QgsRelationManager::readProject( const QDomDocument & doc )
}
emit( relationsLoaded() );
emit changed();
}
void QgsRelationManager::writeProject( QDomDocument & doc )
@ -175,7 +181,8 @@ void QgsRelationManager::writeProject( QDomDocument & doc )
void QgsRelationManager::layersRemoved( const QStringList& layers )
{
Q_FOREACH ( const QString& layer, layers )
bool relationsChanged = false;
Q_FOREACH( const QString& layer, layers )
{
QMapIterator<QString, QgsRelation> it( mRelations );
@ -187,7 +194,12 @@ void QgsRelationManager::layersRemoved( const QStringList& layers )
|| it.value().referencingLayerId() == layer )
{
mRelations.remove( it.key() );
relationsChanged = true;
}
}
}
if ( relationsChanged )
{
emit changed();
}
}

6
src/core/qgsrelationmanager.h
View File

@ -107,6 +107,12 @@ class CORE_EXPORT QgsRelationManager : public QObject
signals:
void relationsLoaded();
/**
* Emitted when relations are added or removed to the manager.
* @note added in QGIS 2.5
*/
void changed();
private slots:
void readProject( const QDomDocument &doc );
void writeProject( QDomDocument &doc );