/
qgseditorwidgetwrapper.cpp
178 lines (147 loc) · 4.79 KB
/
qgseditorwidgetwrapper.cpp
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/***************************************************************************
qgseditorwidgetwrapper.cpp
--------------------------------------
Date : 20.4.2013
Copyright : (C) 2013 Matthias Kuhn
Email : matthias at opengis dot ch
***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include "qgseditorwidgetwrapper.h"
#include "qgsvectorlayer.h"
#include "qgsvectordataprovider.h"
#include "qgsfield.h"
#include <QTableView>
QgsEditorWidgetWrapper::QgsEditorWidgetWrapper( QgsVectorLayer* vl, int fieldIdx, QWidget* editor, QWidget* parent )
: QgsWidgetWrapper( vl, editor, parent )
, mValidConstraint( true )
, mFieldIdx( fieldIdx )
{
}
int QgsEditorWidgetWrapper::fieldIdx() const
{
return mFieldIdx;
}
QgsField QgsEditorWidgetWrapper::field() const
{
if ( mFieldIdx < layer()->fields().count() )
return layer()->fields().at( mFieldIdx );
else
return QgsField();
}
QVariant QgsEditorWidgetWrapper::defaultValue() const
{
mDefaultValue = layer()->dataProvider()->defaultValue( mFieldIdx );
return mDefaultValue;
}
QgsEditorWidgetWrapper* QgsEditorWidgetWrapper::fromWidget( QWidget* widget )
{
return qobject_cast<QgsEditorWidgetWrapper*>( widget->property( "EWV2Wrapper" ).value<QgsWidgetWrapper*>() );
}
void QgsEditorWidgetWrapper::setEnabled( bool enabled )
{
QWidget* wdg = widget();
if ( wdg )
{
wdg->setEnabled( enabled );
}
}
void QgsEditorWidgetWrapper::setFeature( const QgsFeature& feature )
{
mFeature = feature;
setValue( feature.attribute( mFieldIdx ) );
}
void QgsEditorWidgetWrapper::valueChanged( const QString& value )
{
emit valueChanged( QVariant( value ) );
}
void QgsEditorWidgetWrapper::valueChanged( int value )
{
emit valueChanged( QVariant( value ) );
}
void QgsEditorWidgetWrapper::valueChanged( double value )
{
emit valueChanged( QVariant( value ) );
}
void QgsEditorWidgetWrapper::valueChanged( bool value )
{
emit valueChanged( QVariant( value ) );
}
void QgsEditorWidgetWrapper::valueChanged( qlonglong value )
{
emit valueChanged( QVariant( value ) );
}
void QgsEditorWidgetWrapper::valueChanged()
{
emit valueChanged( value() );
}
void QgsEditorWidgetWrapper::updateConstraintWidgetStatus( bool constraintValid )
{
if ( constraintValid )
widget()->setStyleSheet( QString() );
else
widget()->setStyleSheet( "background-color: #dd7777;" );
}
void QgsEditorWidgetWrapper::updateConstraint( const QgsFeature &ft )
{
bool toEmit( false );
QString errStr( tr( "predicate is True" ) );
QString expression = layer()->editFormConfig().constraintExpression( mFieldIdx );
QString description;
QVariant value = ft.attribute( mFieldIdx );
if ( ! expression.isEmpty() )
{
description = layer()->editFormConfig().constraintDescription( mFieldIdx );
QgsExpressionContext context = layer()->createExpressionContext();
context.setFeature( ft );
QgsExpression expr( expression );
mValidConstraint = expr.evaluate( &context ).toBool();
if ( expr.hasParserError() )
errStr = expr.parserErrorString();
else if ( expr.hasEvalError() )
errStr = expr.evalErrorString();
else if ( ! mValidConstraint )
errStr = tr( "predicate is False" );
toEmit = true;
}
else
mValidConstraint = true;
if ( layer()->editFormConfig().notNull( mFieldIdx ) )
{
if ( !expression.isEmpty() )
{
QString fieldName = ft.fields().field( mFieldIdx ).name();
expression = "( " + expression + " ) AND ( " + fieldName + " IS NOT NULL)";
description = "( " + description + " ) AND NotNull";
}
else
{
description = "NotNull";
expression = "NotNull";
}
mValidConstraint = mValidConstraint && !value.isNull();
if ( value.isNull() )
errStr = tr( "predicate is False" );
toEmit = true;
}
if ( toEmit )
{
updateConstraintWidgetStatus( mValidConstraint );
emit constraintStatusChanged( expression, description, errStr, mValidConstraint );
}
}
bool QgsEditorWidgetWrapper::isValidConstraint() const
{
return mValidConstraint;
}
bool QgsEditorWidgetWrapper::isInTable( const QWidget* parent )
{
if ( !parent ) return false;
if ( qobject_cast<const QTableView*>( parent ) ) return true;
return isInTable( parent->parentWidget() );
}