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fix #6120

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This commit is contained in:
Juergen E. Fischer 2012-08-02 15:46:01 +02:00
parent 4be3c19150
commit 28b8ab09ad
3 changed files with 40 additions and 22 deletions
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4
src/app/qgsattributetabledialog.cpp
View File

@ -111,7 +111,7 @@ QgsAttributeTableDialog::QgsAttributeTableDialog( QgsVectorLayer *theLayer, QWid
mToggleEditingButton->setEnabled( canChangeAttributes && !mLayer->isReadOnly() );
mSaveEditsButton->setEnabled( canChangeAttributes && mLayer->isEditable() );
mOpenFieldCalculator->setEnabled( canChangeAttributes && mLayer->isEditable() );
mOpenFieldCalculator->setEnabled(( canChangeAttributes || canAddAttributes ) && mLayer->isEditable() );
mDeleteSelectedButton->setEnabled( canDeleteFeatures && mLayer->isEditable() );
mAddAttribute->setEnabled( canAddAttributes && mLayer->isEditable() );
mRemoveAttribute->setEnabled( canDeleteAttributes && mLayer->isEditable() );
@ -674,7 +674,7 @@ void QgsAttributeTableDialog::editingToggled()
bool canAddAttributes = mLayer->dataProvider()->capabilities() & QgsVectorDataProvider::AddAttributes;
bool canDeleteAttributes = mLayer->dataProvider()->capabilities() & QgsVectorDataProvider::DeleteAttributes;
bool canAddFeatures = mLayer->dataProvider()->capabilities() & QgsVectorDataProvider::AddFeatures;
mOpenFieldCalculator->setEnabled( canChangeAttributes && mLayer->isEditable() );
mOpenFieldCalculator->setEnabled(( canChangeAttributes || canAddAttributes ) && mLayer->isEditable() );
mDeleteSelectedButton->setEnabled( canDeleteFeatures && mLayer->isEditable() );
mAddAttribute->setEnabled( canAddAttributes && mLayer->isEditable() );
mRemoveAttribute->setEnabled( canDeleteAttributes && mLayer->isEditable() );

56
src/app/qgsfieldcalculator.cpp
View File

@ -42,28 +42,42 @@ QgsFieldCalculator::QgsFieldCalculator( QgsVectorLayer* vl )
mOutputFieldWidthSpinBox->setValue( 10 );
mOutputFieldPrecisionSpinBox->setValue( 3 );
// disable creation of new fields if not supported by data provider
if ( !( vl->dataProvider()->capabilities() & QgsVectorDataProvider::AddAttributes ) )
mUpdateExistingGroupBox->setEnabled( vl->dataProvider()->capabilities() & QgsVectorDataProvider::ChangeAttributeValues );
mNewFieldGroupBox->setEnabled( vl->dataProvider()->capabilities() & QgsVectorDataProvider::AddAttributes );
Q_ASSERT( mNewFieldGroupBox->isEnabled() || mUpdateExistingGroupBox->isEnabled() );
if ( mNewFieldGroupBox->isEnabled() )
{
mNewFieldGroupBox->setChecked( true );
}
else
{
mNewFieldGroupBox->setToolTip( tr( "Not available for layer" ) );
mUpdateExistingGroupBox->setChecked( true );
mUpdateExistingGroupBox->setCheckable( false );
mNewFieldGroupBox->setChecked( false );
mNewFieldGroupBox->setTitle( mNewFieldGroupBox->title() + tr( " (not supported by provider)" ) );
}
if ( vl->selectedFeaturesIds().size() > 0 )
if ( mUpdateExistingGroupBox->isEnabled() )
{
mOnlyUpdateSelectedCheckBox->setChecked( true );
mUpdateExistingGroupBox->setChecked( !mNewFieldGroupBox->isEnabled() );
}
else
{
mUpdateExistingGroupBox->setToolTip( tr( "Not available for layer" ) );
mNewFieldGroupBox->setChecked( true );
mNewFieldGroupBox->setCheckable( false );
}
mOnlyUpdateSelectedCheckBox->setChecked( vl->selectedFeaturesIds().size() > 0 );
}
QgsFieldCalculator::~QgsFieldCalculator()
{
}
void QgsFieldCalculator::accept()
{
QString calcString = builder->expressionText();
QgsExpression exp( calcString );
@ -79,7 +93,7 @@ void QgsFieldCalculator::accept()
mVectorLayer->beginEditCommand( "Field calculator" );
//update existing field
if ( mUpdateExistingGroupBox->isChecked() )
if ( mUpdateExistingGroupBox->isChecked() || !mNewFieldGroupBox->isEnabled() )
{
QMap<QString, int>::const_iterator fieldIt = mFieldMap.find( mExistingFieldComboBox->currentText() );
if ( fieldIt != mFieldMap.end() )
@ -128,7 +142,7 @@ void QgsFieldCalculator::accept()
bool calculationSuccess = true;
QString error;
bool onlySelected = ( mOnlyUpdateSelectedCheckBox->isChecked() );
bool onlySelected = mOnlyUpdateSelectedCheckBox->isChecked();
QgsFeatureIds selectedIds = mVectorLayer->selectedFeaturesIds();
// block layerModified signals (that would trigger table update)
@ -269,18 +283,22 @@ void QgsFieldCalculator::populateFields()
void QgsFieldCalculator::setOkButtonState()
{
QPushButton* okButton = mButtonBox->button( QDialogButtonBox::Ok );
okButton->setToolTip( "" );
bool emptyFieldName = mOutputFieldNameLineEdit->text().isEmpty();
bool expressionValid = builder->isExpressionValid();
if ( emptyFieldName )
if (( mNewFieldGroupBox->isChecked() || !mUpdateExistingGroupBox->isEnabled() )
&& mOutputFieldNameLineEdit->text().isEmpty() )
{
okButton->setToolTip( tr( "Please enter a field name" ) );
okButton->setEnabled( false );
return;
}
if ( !expressionValid )
if ( !builder->isExpressionValid() )
{
okButton->setToolTip( okButton->toolTip() + tr( "\n The expression is invalid see (more info) for details" ) );
okButton->setEnabled( false );
return;
}
bool okEnabled = ( !emptyFieldName || mUpdateExistingGroupBox->isChecked() ) && expressionValid;
okButton->setEnabled( okEnabled );
okButton->setToolTip( "" );
okButton->setEnabled( true );
}

2
src/app/qgsvectorlayerproperties.cpp
View File

@ -426,7 +426,7 @@ void QgsVectorLayerProperties::updateButtons()
int cap = layer->dataProvider()->capabilities();
mAddAttributeButton->setEnabled( cap & QgsVectorDataProvider::AddAttributes );
mDeleteAttributeButton->setEnabled( cap & QgsVectorDataProvider::DeleteAttributes );
mCalculateFieldButton->setEnabled( cap & QgsVectorDataProvider::ChangeAttributeValues );
mCalculateFieldButton->setEnabled( cap & ( QgsVectorDataProvider::ChangeAttributeValues | QgsVectorDataProvider::AddAttributes ) );
mToggleEditingButton->setChecked( true );
}
else