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[GRASS] disabled editing of cat and topo symbol
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@blazek
blazek committed Oct 5, 2015
1 parent b219b5e commit 52e7628
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Showing 2 changed files with 150 additions and 74 deletions.
218 changes: 145 additions & 73 deletions src/providers/grass/qgsgrassprovider.cpp
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Expand Up @@ -86,6 +86,8 @@ QgsGrassProvider::QgsGrassProvider( QString uri )
, mEditBuffer( 0 )
, mEditLayer( 0 )
, mNewFeatureType( 0 )
, mPoints( 0 )
, mCats( 0 )
{
QgsDebugMsg( "uri = " + uri );

Expand All @@ -99,6 +101,9 @@ QgsGrassProvider::QgsGrassProvider( QString uri )
QTime time;
time.start();

mPoints = Vect_new_line_struct();
mCats = Vect_new_cats_struct();

// Parse URI
QDir dir( uri ); // it is not a directory in fact
QString myURI = dir.path(); // no dupl '/'
Expand Down Expand Up @@ -232,6 +237,23 @@ QgsGrassProvider::QgsGrassProvider( QString uri )
QgsDebugMsg( QString( "New GRASS layer opened, time (ms): %1" ).arg( time.elapsed() ) );
}

QgsGrassProvider::~QgsGrassProvider()
{
QgsDebugMsg( "entered" );
if ( mLayer )
{
mLayer->close();
}
if ( mPoints )
{
Vect_destroy_line_struct( mPoints );
}
if ( mCats )
{
Vect_destroy_cats_struct( mCats );
}
}

int QgsGrassProvider::capabilities() const
{
// for now, only one map may be edited at time
Expand Down Expand Up @@ -333,16 +355,6 @@ void QgsGrassProvider::update()
mValid = true;
}

QgsGrassProvider::~QgsGrassProvider()
{
QgsDebugMsg( "entered" );
if ( mLayer )
{
mLayer->close();
}
}


QgsAbstractFeatureSource* QgsGrassProvider::featureSource() const
{
const_cast<QgsGrassProvider*>( this )->ensureUpdated();
Expand Down Expand Up @@ -640,15 +652,35 @@ int QgsGrassProvider::readLine( struct line_pnts *Points, struct line_cats *Cats
QgsDebugMsgLevel( "entered", 3 );

if ( Points )
{
Vect_reset_line( Points );
}

if ( Cats )
{
Vect_reset_cats( Cats );
}

if ( !map() )
{
return -1;
}

if ( !Vect_line_alive( map(), line ) )
{
return -1;
}

return ( Vect_read_line( map(), Points, Cats, line ) );
int type = -1;
G_TRY
{
type = Vect_read_line( map(), mPoints, mCats, line );
}
G_CATCH( QgsGrass::Exception &e )
{
QgsDebugMsg( QString( "Cannot read line : %1" ).arg( e.what() ) );
}
return type;
}

bool QgsGrassProvider::nodeCoor( int node, double *x, double *y )
Expand Down Expand Up @@ -697,14 +729,38 @@ int QgsGrassProvider::writeLine( int type, struct line_pnts *Points, struct line
return (( int ) Vect_write_line( map(), type, Points, Cats ) );
}

int QgsGrassProvider::rewriteLine( int line, int type, struct line_pnts *Points, struct line_cats *Cats )
int QgsGrassProvider::rewriteLine( int oldLid, int type, struct line_pnts *Points, struct line_cats *Cats )
{
QgsDebugMsg( QString( "n_points = %1 n_cats = %2" ).arg( Points->n_points ).arg( Cats->n_cats ) );

if ( !isEdited() )
if ( !map() || !isEdited() )
{
return -1;
}

int newLid = -1;
G_TRY
{
newLid = Vect_rewrite_line( map(), oldLid, type, Points, Cats );

// oldLids are maping to the very first, original version (used by undo)
int oldestLid = oldLid;
if ( mLayer->map()->oldLids().contains( oldLid ) ) // if it was changed already
{
oldestLid = mLayer->map()->oldLids().value( oldLid );
}

return ( Vect_rewrite_line( map(), line, type, Points, Cats ) );
QgsDebugMsg( QString( "oldLid = %1 oldestLid = %2 newLine = %3" ).arg( oldLid ).arg( oldestLid ).arg( newLid ) );
QgsDebugMsg( QString( "oldLids : %1 -> %2" ).arg( newLid ).arg( oldestLid ) );
mLayer->map()->oldLids()[newLid] = oldestLid;
QgsDebugMsg( QString( "newLids : %1 -> %2" ).arg( oldestLid ).arg( newLid ) );
mLayer->map()->newLids()[oldestLid] = newLid;
}
G_CATCH( QgsGrass::Exception &e )
{
QgsDebugMsg( QString( "Cannot write line : %1" ).arg( e.what() ) );
}
return newLid;
}


Expand Down Expand Up @@ -1030,6 +1086,11 @@ void QgsGrassProvider::startEditing( QgsVectorLayer *vectorLayer )
// let qgis know (attribute table etc.) that we added topo symbol field
vectorLayer->updateFields();

// TODO: enable cats editing once all consequences are implemented
// disable cat and topo symbol editing
vectorLayer->setFieldEditable( mLayer->keyColumn(), false );
vectorLayer->setFieldEditable( mLayer->fields().size() - 1, false );

QgsDebugMsg( "edit started" );
}

Expand Down Expand Up @@ -1139,11 +1200,9 @@ void QgsGrassProvider::onFeatureAdded( QgsFeatureId fid )
}
else
{
struct line_pnts *points = Vect_new_line_struct();
struct line_cats *cats = Vect_new_cats_struct();
int newCat = 0;

setPoints( points, geometry );
setPoints( mPoints, geometry );
// TODO: get also old type if it is feature previously deleted
int type = mNewFeatureType == GV_AREA ? GV_BOUNDARY : mNewFeatureType;

Expand Down Expand Up @@ -1182,7 +1241,8 @@ void QgsGrassProvider::onFeatureAdded( QgsFeatureId fid )
}
}
QgsDebugMsg( QString( "newCat = %1" ).arg( newCat ) );
Vect_cat_set( cats, mLayerField, newCat );
Vect_reset_cats( mCats );
Vect_cat_set( mCats, mLayerField, newCat );
QString error;

// if the cat is user defined, the record may alredy exist
Expand Down Expand Up @@ -1265,14 +1325,15 @@ void QgsGrassProvider::onFeatureAdded( QgsFeatureId fid )
{
// TODO: orig field, maybe different
int field = mLayerField;
Vect_cat_set( cats, field, cat );
Vect_reset_cats( mCats );
Vect_cat_set( mCats, field, cat );
}
}

if ( type > 0 && points->n_points > 0 )
if ( type > 0 && mPoints->n_points > 0 )
{
mLayer->map()->lockReadWrite();
int newLid = Vect_write_line( map(), type, points, cats );
int newLid = Vect_write_line( map(), type, mPoints, mCats );
mLayer->map()->unlockReadWrite();

QgsDebugMsg( QString( "newLine = %1" ).arg( newLid ) );
Expand Down Expand Up @@ -1334,14 +1395,11 @@ void QgsGrassProvider::onFeatureAdded( QgsFeatureId fid )
}
}

if ( type == GV_BOUNDARY )
if ( type == GV_BOUNDARY || type == GV_CENTROID )
{
setAddedFeaturesSymbol();
}
}

Vect_destroy_line_struct( points );
Vect_destroy_cats_struct( cats );
}
}

Expand Down Expand Up @@ -1395,7 +1453,7 @@ void QgsGrassProvider::onFeatureDeleted( QgsFeatureId fid )
}
mLayer->map()->unlockReadWrite();

if ( type == GV_BOUNDARY )
if ( type == GV_BOUNDARY || type == GV_CENTROID )
{
setAddedFeaturesSymbol();
}
Expand All @@ -1411,22 +1469,12 @@ void QgsGrassProvider::onGeometryChanged( QgsFeatureId fid, QgsGeometry &geom )
}
QgsDebugMsg( QString( "fid = %1 oldLid = %2 realLine = %3" ).arg( fid ).arg( oldLid ).arg( realLine ) );

struct line_pnts *points = Vect_new_line_struct();
struct line_cats *cats = Vect_new_cats_struct();

int type = 0;
G_TRY
{
type = Vect_read_line( map(), points, cats, realLine );
}
G_CATCH( QgsGrass::Exception &e )
int type = readLine( mPoints, mCats, realLine );
QgsDebugMsg( QString( "type = %1 n_points = %2" ).arg( type ).arg( mPoints->n_points ) );
if ( type < 1 ) // error
{
QgsDebugMsg( QString( "Cannot read line : %1" ).arg( e.what() ) );
Vect_destroy_line_struct( points );
Vect_destroy_cats_struct( cats );
return;
}
QgsDebugMsg( QString( "type = %1 n_points = %2" ).arg( type ).arg( points->n_points ) );

// store only the first original geometry if it is not new feature, changed geometries are stored in the buffer
if ( oldLid > 0 && !mLayer->map()->oldGeometries().contains( oldLid ) )
Expand All @@ -1443,37 +1491,16 @@ void QgsGrassProvider::onGeometryChanged( QgsFeatureId fid, QgsGeometry &geom )
}
}

setPoints( points, geom.geometry() );
setPoints( mPoints, geom.geometry() );

mLayer->map()->lockReadWrite();
// Vect_rewrite_line may delete/write the line with a new id
int newLid = Vect_rewrite_line( map(), realLine, type, points, cats );
G_TRY
{
newLid = Vect_rewrite_line( map(), realLine, type, points, cats );
int newLid = rewriteLine( realLine, type, mPoints, mCats );
Q_UNUSED( newLid )

// oldLids are maping to the very first, original version (used by undo)
int oldestLid = oldLid;
if ( mLayer->map()->oldLids().contains( oldLid ) )
{
oldestLid = mLayer->map()->oldLids().value( oldLid );
}
QgsDebugMsg( QString( "oldLid = %1 oldestLid = %2 newLine = %3" ).arg( oldLid ).arg( oldestLid ).arg( newLid ) );
QgsDebugMsg( QString( "oldLids : %1 -> %2" ).arg( newLid ).arg( oldestLid ) );
mLayer->map()->oldLids()[newLid] = oldestLid;
QgsDebugMsg( QString( "newLids : %1 -> %2" ).arg( oldestLid ).arg( newLid ) );
mLayer->map()->newLids()[oldestLid] = newLid;
}
G_CATCH( QgsGrass::Exception &e )
{
QgsDebugMsg( QString( "Cannot write line : %1" ).arg( e.what() ) );
}
mLayer->map()->unlockReadWrite();

Vect_destroy_line_struct( points );
Vect_destroy_cats_struct( cats );

if ( type == GV_BOUNDARY )
if ( type == GV_BOUNDARY || type == GV_CENTROID )
{
setAddedFeaturesSymbol();
}
Expand Down Expand Up @@ -1506,19 +1533,65 @@ void QgsGrassProvider::onAttributeValueChanged( QgsFeatureId fid, int idx, const
}
QgsField field = mEditLayer->fields()[idx];

if ( realCat > 0 )
QgsDebugMsg( "field.name() = " + field.name() + " keyColumnName() = " + mLayer->keyColumnName() );
// TODO: Changing existing category is currently disabled (read only widget set on layer)
// bacause it makes it all too complicated
if ( field.name() == mLayer->keyColumnName() )
{
QString error;
mLayer->changeAttributeValue( realCat, field, value, error );
if ( !error.isEmpty() )
// user changed category -> rewrite line
QgsDebugMsg( "cat changed -> rewrite line" );
int type = readLine( mPoints, mCats, realLine );
if ( type <= 0 )
{
QgsGrass::warning( error );
QgsDebugMsg( "cannot read line" );
}
else
{
if ( Vect_field_cat_del( mCats, mLayerField, realCat ) == 0 )
{
// should not happen
QgsDebugMsg( "the line does not have old category" );
}

int newCat = value.toInt();
QgsDebugMsg( QString( "realCat = %1 newCat = %2" ).arg( realCat ).arg( newCat ) );
if ( newCat == 0 )
{
QgsDebugMsg( "new category is 0" );
// TODO: remove category from line?
}
else
{
Vect_cat_set( mCats, mLayerField, newCat );
mLayer->map()->lockReadWrite();
int newLid = rewriteLine( realLine, type, mPoints, mCats );
Q_UNUSED( newLid )

// TODO: - store the new cat somewhere for cats mapping
// - insert record if does not exist
// - update feature attributes by existing record?

mLayer->map()->unlockReadWrite();
}
}
}
else
{
QgsDebugMsg( "no cat -> add new cat to line" );
// TODO

if ( realCat > 0 )
{
QString error;
mLayer->changeAttributeValue( realCat, field, value, error );
if ( !error.isEmpty() )
{
QgsGrass::warning( error );
}
}
else
{
QgsDebugMsg( "no cat -> add new cat to line" );
// TODO
}
}
}

Expand Down Expand Up @@ -1574,8 +1647,7 @@ void QgsGrassProvider::setAddedFeaturesSymbol()
Q_FOREACH ( QgsFeatureId fid, features.keys() )
{
QgsFeature feature = features[fid];
if ( !feature.geometry() || !feature.geometry()->geometry() ||
feature.geometry()->geometry()->wkbType() != QgsWKBTypes::LineString )
if ( !feature.geometry() || !feature.geometry()->geometry() )
{
continue;
}
Expand Down
6 changes: 5 additions & 1 deletion src/providers/grass/qgsgrassprovider.h
View file
Expand Up @@ -269,7 +269,7 @@ class GRASS_LIB_EXPORT QgsGrassProvider : public QgsVectorDataProvider
* @return line number
* @return -1 error
*/
int rewriteLine( int line, int type, struct line_pnts *Points, struct line_cats *Cats );
int rewriteLine( int lid, int type, struct line_pnts *Points, struct line_cats *Cats );

/** Delete line
* @return 0 OK
Expand Down Expand Up @@ -461,6 +461,10 @@ class GRASS_LIB_EXPORT QgsGrassProvider : public QgsVectorDataProvider
// next digitized feature GRASS type
int mNewFeatureType;

// points and cats used only for editing
struct line_pnts *mPoints;
struct line_cats *mCats;

friend class QgsGrassFeatureSource;
friend class QgsGrassFeatureIterator;
};
Expand Down

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