pcbnew/dialogs/dialog_shape_properties.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2019 Jean-Pierre Charras jp.charras at wanadoo.fr
 * Copyright (C) 1992-2023 KiCad Developers, see AUTHORS.txt for contributors.
 *
 * 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 3 of the License, or (at your
 * option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, you may find one here:
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * or you may search the http://www.gnu.org website for the version 2 license,
 * or you may write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
 */
 
/*
 * Edit properties of Lines, Circles, Arcs and Polygons for PCBNew and Footprint Editor
 */
 
#include <pcb_base_edit_frame.h>
#include <pcb_edit_frame.h>
#include <wx/valnum.h>
#include <board_commit.h>
#include <pcb_layer_box_selector.h>
#include <dialogs/html_message_box.h>
#include <tool/tool_manager.h>
#include <tool/actions.h>
#include <pcb_shape.h>
#include <macros.h>
#include <widgets/unit_binder.h>
 
#include <dialog_shape_properties_base.h>
#include <tools/drawing_tool.h>
 
 
class DIALOG_SHAPE_PROPERTIES : public DIALOG_SHAPE_PROPERTIES_BASE
{
public:
 DIALOG_SHAPE_PROPERTIES( PCB_BASE_EDIT_FRAME* aParent, PCB_SHAPE* aShape );
 ~DIALOG_SHAPE_PROPERTIES() {};
 
private:
 bool TransferDataToWindow() override;
 bool TransferDataFromWindow() override;
 
 void onFilledCheckbox( wxCommandEvent& event ) override;
 
 void onLayerSelection( wxCommandEvent& event ) override;
 
 bool Validate() override;
 
 // Show/hide the widgets used in net selection (shown only for copper layers)
 void showHideNetInfo()
 {
 m_netSelector->Show( m_item->IsOnCopperLayer() );
 m_netLabel->Show( m_item->IsOnCopperLayer() );
 }
 
 
private:
 PCB_BASE_EDIT_FRAME* m_parent;
 PCB_SHAPE* m_item;
 
 UNIT_BINDER m_startX, m_startY;
 UNIT_BINDER m_endX, m_endY;
 UNIT_BINDER m_thickness;
 UNIT_BINDER m_segmentLength;
 UNIT_BINDER m_segmentAngle;
 UNIT_BINDER m_angle;
 UNIT_BINDER m_rectangleHeight;
 UNIT_BINDER m_rectangleWidth;
 UNIT_BINDER m_bezierCtrl1X, m_bezierCtrl1Y;
 UNIT_BINDER m_bezierCtrl2X, m_bezierCtrl2Y;
 
 bool m_flipStartEnd;
};
 
DIALOG_SHAPE_PROPERTIES::DIALOG_SHAPE_PROPERTIES( PCB_BASE_EDIT_FRAME* aParent, PCB_SHAPE* aShape ):
 DIALOG_SHAPE_PROPERTIES_BASE( aParent ),
 m_parent( aParent ),
 m_item( aShape ),
 m_startX( aParent, m_startXLabel, m_startXCtrl, m_startXUnits ),
 m_startY( aParent, m_startYLabel, m_startYCtrl, m_startYUnits ),
 m_endX( aParent, m_endXLabel, m_endXCtrl, m_endXUnits ),
 m_endY( aParent, m_endYLabel, m_endYCtrl, m_endYUnits ),
 m_thickness( aParent, m_thicknessLabel, m_thicknessCtrl, m_thicknessUnits ),
 m_segmentLength( aParent, m_segmentLengthLabel, m_segmentLengthCtrl, m_segmentLengthUnits ),
 m_segmentAngle( aParent, m_segmentAngleLabel, m_segmentAngleCtrl, m_segmentAngleUnits ),
 m_angle( aParent, m_angleLabel, m_angleCtrl, m_angleUnits ),
 m_rectangleHeight( aParent, m_rectangleHeightLabel, m_rectangleHeightCtrl, m_rectangleHeightUnits ),
 m_rectangleWidth( aParent, m_rectangleWidthLabel, m_rectangleWidthCtrl, m_rectangleWidthUnits ),
 m_bezierCtrl1X( aParent, m_BezierPointC1XLabel, m_BezierC1X_Ctrl, m_BezierPointC1XUnit ),
 m_bezierCtrl1Y( aParent, m_BezierPointC1YLabel, m_BezierC1Y_Ctrl, m_BezierPointC1YUnit ),
 m_bezierCtrl2X( aParent, m_BezierPointC2XLabel, m_BezierC2X_Ctrl, m_BezierPointC2XUnit ),
 m_bezierCtrl2Y( aParent, m_BezierPointC2YLabel, m_BezierC2Y_Ctrl, m_BezierPointC2YUnit ),
 m_flipStartEnd( false )
{
 SetTitle( wxString::Format( GetTitle(), m_item->GetFriendlyName() ) );
 m_hash_key = TO_UTF8( GetTitle() );
 
 // Configure display origin transforms
 m_startX.SetCoordType( ORIGIN_TRANSFORMS::ABS_X_COORD );
 m_startY.SetCoordType( ORIGIN_TRANSFORMS::ABS_Y_COORD );
 m_endX.SetCoordType( ORIGIN_TRANSFORMS::ABS_X_COORD );
 m_endY.SetCoordType( ORIGIN_TRANSFORMS::ABS_Y_COORD );
 m_bezierCtrl1X.SetCoordType( ORIGIN_TRANSFORMS::ABS_X_COORD );
 m_bezierCtrl1Y.SetCoordType( ORIGIN_TRANSFORMS::ABS_Y_COORD );
 m_bezierCtrl2X.SetCoordType( ORIGIN_TRANSFORMS::ABS_X_COORD );
 m_bezierCtrl2Y.SetCoordType( ORIGIN_TRANSFORMS::ABS_Y_COORD );
 
 m_segmentAngle.SetUnits( EDA_UNITS::DEGREES );
 m_segmentAngle.SetPrecision( 4 );
 
 m_angle.SetUnits( EDA_UNITS::DEGREES );
 
 // Do not allow locking items in the footprint editor
 m_locked->Show( dynamic_cast<PCB_EDIT_FRAME*>( aParent ) != nullptr );
 
 // Configure the layers list selector
 if( m_parent->GetFrameType() == FRAME_FOOTPRINT_EDITOR )
 {
 LSET forbiddenLayers = LSET::ForbiddenFootprintLayers();
 
 // If someone went to the trouble of setting the layer in a text editor, then there's
 // very little sense in nagging them about it.
 forbiddenLayers.set( m_item->GetLayer(), false );
 
 m_LayerSelectionCtrl->SetNotAllowedLayerSet( forbiddenLayers );
 }
 
 for( const auto& [ lineStyle, lineStyleDesc ] : lineTypeNames )
 m_lineStyleCombo->Append( lineStyleDesc.name, KiBitmap( lineStyleDesc.bitmap ) );
 
 m_lineStyleCombo->Append( DEFAULT_STYLE );
 
 m_LayerSelectionCtrl->SetLayersHotkeys( false );
 m_LayerSelectionCtrl->SetBoardFrame( m_parent );
 m_LayerSelectionCtrl->Resync();
 
 m_netSelector->SetBoard( aParent->GetBoard() );
 m_netSelector->SetNetInfo( &aParent->GetBoard()->GetNetInfo() );
 
 int net = aShape->GetNetCode();
 
 if( net >= 0 )
 {
 m_netSelector->SetSelectedNetcode( net );
 }
 else
 {
 m_netSelector->SetIndeterminateString( INDETERMINATE_STATE );
 m_netSelector->SetIndeterminate();
 }
 
 if( m_item->GetShape() == SHAPE_T::POLY )
 m_sizerStartEnd->Show( false );
 
 // Only a Bezeier curve has control points. So do not show these parameters for other shapes
 if( m_item->GetShape() != SHAPE_T::BEZIER )
 m_sizerBezier->Show( false );
 
 // Only a segment has this format
 if( m_item->GetShape() != SHAPE_T::SEGMENT )
 {
 m_segmentLength.Show( false );
 m_segmentAngle.Show( false );
 }
 
 if( m_item->GetShape() != SHAPE_T::RECTANGLE )
 {
 m_rectangleHeight.Show( false );
 m_rectangleWidth.Show( false );
 }
 
 // Only an arc has a angle parameter. So do not show this parameter for other shapes
 if( m_item->GetShape() != SHAPE_T::ARC )
 m_angle.Show( false );
 
 if( m_item->GetShape() == SHAPE_T::ARC || m_item->GetShape() == SHAPE_T::SEGMENT )
 m_filledCtrl->Show( false );
 
 // Change texts for circles:
 if( m_item->GetShape() == SHAPE_T::CIRCLE )
 {
 m_startPointLabel->SetLabel( _( "Center Point" ) );
 m_endPointLabel->SetLabel( _( "Radius" ) );
 
 m_endXLabel->Show( false );
 m_endX.SetCoordType( ORIGIN_TRANSFORMS::NOT_A_COORD );
 m_endY.Show( false );
 }
 
 showHideNetInfo();
 
 SetInitialFocus( m_startXCtrl );
 
 SetupStandardButtons();
 
 // Now all widgets have the size fixed, call FinishDialogSettings
 finishDialogSettings();
 Layout();
}
 
 
void PCB_BASE_EDIT_FRAME::ShowGraphicItemPropertiesDialog( PCB_SHAPE* aShape )
{
 wxCHECK_RET( aShape, wxT( "ShowGraphicItemPropertiesDialog() error: NULL item" ) );
 
 DIALOG_SHAPE_PROPERTIES dlg( this, aShape );
 
 if( dlg.ShowQuasiModal() == wxID_OK )
 {
 if( aShape->IsOnLayer( GetActiveLayer() ) )
 {
 DRAWING_TOOL* drawingTool = m_toolManager->GetTool<DRAWING_TOOL>();
 drawingTool->SetStroke( aShape->GetStroke(), GetActiveLayer() );
 }
 }
}
 
 
void DIALOG_SHAPE_PROPERTIES::onLayerSelection( wxCommandEvent& event )
{
 if( m_LayerSelectionCtrl->GetLayerSelection() >= 0 )
 {
 m_item->SetLayer( ToLAYER_ID( m_LayerSelectionCtrl->GetLayerSelection() ) );
 showHideNetInfo();
 }
}
 
 
void DIALOG_SHAPE_PROPERTIES::onFilledCheckbox( wxCommandEvent& event )
{
 if( m_filledCtrl->GetValue() )
 {
 m_lineStyleCombo->SetSelection( 0 );
 m_lineStyleLabel->Enable( false );
 m_lineStyleCombo->Enable( false );
 }
 else
 {
 LINE_STYLE style = m_item->GetStroke().GetLineStyle();
 
 if( style == LINE_STYLE::DEFAULT )
 style = LINE_STYLE::SOLID;
 
 if( (int) style < (int) lineTypeNames.size() )
 m_lineStyleCombo->SetSelection( (int) style );
 
 m_lineStyleLabel->Enable( true );
 m_lineStyleCombo->Enable( true );
 }
}
 
bool DIALOG_SHAPE_PROPERTIES::TransferDataToWindow()
{
 if( !m_item )
 return false;
 
 if( m_item->GetShape() == SHAPE_T::ARC )
 m_angle.SetAngleValue( m_item->GetArcAngle() );
 
 if( m_item->GetShape() == SHAPE_T::RECTANGLE )
 {
 m_rectangleHeight.SetValue( m_item->GetRectangleHeight() );
 m_rectangleWidth.SetValue( m_item->GetRectangleWidth() );
 }
 
 if( m_item->GetShape() == SHAPE_T::SEGMENT )
 {
 if( m_item->GetStart().x == m_item->GetEnd().x )
 m_flipStartEnd = m_item->GetStart().y > m_item->GetEnd().y;
 else
 m_flipStartEnd = m_item->GetStart().x > m_item->GetEnd().x;
 
 m_segmentLength.SetValue( KiROUND( m_item->GetLength() ) );
 m_segmentAngle.SetAngleValue( m_item->GetSegmentAngle() );
 }
 
 if( m_flipStartEnd && m_item->GetShape() != SHAPE_T::ARC )
 {
 m_startX.SetValue( m_item->GetEnd().x );
 m_startY.SetValue( m_item->GetEnd().y );
 }
 else
 {
 m_startX.SetValue( m_item->GetStart().x );
 m_startY.SetValue( m_item->GetStart().y );
 }
 
 if( m_item->GetShape() == SHAPE_T::CIRCLE )
 {
 m_endX.SetValue( m_item->GetRadius() );
 }
 else if( m_flipStartEnd && m_item->GetShape() != SHAPE_T::ARC )
 {
 m_endX.SetValue( m_item->GetStart().x );
 m_endY.SetValue( m_item->GetStart().y );
 }
 else
 {
 m_endX.SetValue( m_item->GetEnd().x );
 m_endY.SetValue( m_item->GetEnd().y );
 }
 
 if( m_item->GetShape() == SHAPE_T::BEZIER )
 {
 m_bezierCtrl1X.SetValue( m_item->GetBezierC1().x );
 m_bezierCtrl1Y.SetValue( m_item->GetBezierC1().y );
 m_bezierCtrl2X.SetValue( m_item->GetBezierC2().x );
 m_bezierCtrl2Y.SetValue( m_item->GetBezierC2().y );
 }
 
 m_filledCtrl->SetValue( m_item->IsFilled() );
 m_locked->SetValue( m_item->IsLocked() );
 
 m_thickness.SetValue( m_item->GetStroke().GetWidth() );
 
 int style = static_cast<int>( m_item->GetStroke().GetLineStyle() );
 
 if( style == -1 )
 m_lineStyleCombo->SetStringSelection( DEFAULT_STYLE );
 else if( style < (int) lineTypeNames.size() )
 m_lineStyleCombo->SetSelection( style );
 else
 wxFAIL_MSG( "Line type not found in the type lookup map" );
 
 m_LayerSelectionCtrl->SetLayerSelection( m_item->GetLayer() );
 
 return DIALOG_SHAPE_PROPERTIES_BASE::TransferDataToWindow();
}
 
 
bool DIALOG_SHAPE_PROPERTIES::TransferDataFromWindow()
{
 if( !DIALOG_SHAPE_PROPERTIES_BASE::TransferDataFromWindow() )
 return false;
 
 if( !m_item )
 return true;
 
 int layer = m_LayerSelectionCtrl->GetLayerSelection();
 VECTOR2I begin_point = m_item->GetStart();
 VECTOR2I end_point = m_item->GetEnd();
 int segment_length = 0;
 EDA_ANGLE segment_angle = EDA_ANGLE( 0, RADIANS_T );
 int rectangle_height = 0;
 int rectangle_width = 0;
 
 BOARD_COMMIT commit( m_parent );
 
 commit.Modify( m_item );
 
 if( m_item->GetShape() == SHAPE_T::SEGMENT )
 {
 segment_length = KiROUND( m_item->GetLength() );
 segment_angle = m_item->GetSegmentAngle().Round( 3 );
 }
 
 if( m_item->GetShape() == SHAPE_T::RECTANGLE )
 {
 rectangle_height = m_item->GetRectangleHeight();
 rectangle_width = m_item->GetRectangleWidth();
 }
 
 if( m_flipStartEnd && m_item->GetShape() != SHAPE_T::ARC )
 {
 m_item->SetEndX( m_startX.GetIntValue() );
 m_item->SetEndY( m_startY.GetIntValue() );
 }
 else
 {
 m_item->SetStartX( m_startX.GetIntValue() );
 m_item->SetStartY( m_startY.GetIntValue() );
 }
 
 if( m_item->GetShape() == SHAPE_T::CIRCLE )
 {
 m_item->SetEnd( m_item->GetStart() + VECTOR2I( m_endX.GetIntValue(), 0 ) );
 }
 else if( m_flipStartEnd && m_item->GetShape() != SHAPE_T::ARC )
 {
 m_item->SetStartX( m_endX.GetIntValue() );
 m_item->SetStartY( m_endY.GetIntValue() );
 }
 else
 {
 m_item->SetEndX( m_endX.GetIntValue() );
 m_item->SetEndY( m_endY.GetIntValue() );
 }
 
 if( m_item->GetShape() == SHAPE_T::SEGMENT )
 {
 bool change_begin = ( begin_point != m_item->GetStart() );
 bool change_end = ( end_point != m_item->GetEnd() );
 bool change_length = ( segment_length != m_segmentLength.GetValue() );
 EDA_ANGLE difference = std::abs( segment_angle - m_segmentAngle.GetAngleValue() );
 bool change_angle = ( difference >= EDA_ANGLE( 0.00049, DEGREES_T ) );
 
 if( !( change_begin && change_end ) )
 {
 segment_length = m_segmentLength.GetIntValue();
 segment_angle = m_segmentAngle.GetAngleValue().Round( 3 );
 
 if( change_length || change_angle )
 {
 if( change_end )
 {
 m_item->SetStartX( m_item->GetEndX()
 - KiROUND( segment_length * segment_angle.Cos() ) );
 m_item->SetStartY( m_item->GetEndY()
 + KiROUND( segment_length * segment_angle.Sin() ) );
 }
 else
 {
 m_item->SetEndX( m_item->GetStartX()
 + KiROUND( segment_length * segment_angle.Cos() ) );
 m_item->SetEndY( m_item->GetStartY()
 - KiROUND( segment_length * segment_angle.Sin() ) );
 }
 }
 }
 
 if( change_length )
 m_item->SetLength( m_segmentLength.GetIntValue() );
 else
 m_item->SetLength( m_item->GetLength() );
 
 if( change_angle )
 m_item->SetSegmentAngle( m_segmentAngle.GetAngleValue().Round( 3 ) );
 else
 m_item->SetSegmentAngle( m_item->GetSegmentAngle().Round( 3 ) );
 }
 
 if( m_item->GetShape() == SHAPE_T::RECTANGLE )
 {
 bool change_begin = ( begin_point != m_item->GetStart() );
 bool change_end = ( end_point != m_item->GetEnd() );
 bool change_height = ( rectangle_height != m_rectangleHeight.GetValue() );
 bool change_width = ( rectangle_width != m_rectangleWidth.GetValue() );
 
 if( !( change_begin && change_end ) )
 {
 rectangle_height = m_rectangleHeight.GetIntValue();
 rectangle_width = m_rectangleWidth.GetIntValue();
 
 if( change_height || change_width )
 {
 if( change_end )
 {
 m_item->SetStartX( m_item->GetEndX() - rectangle_width );
 m_item->SetStartY( m_item->GetEndY() - rectangle_height );
 }
 else
 {
 m_item->SetEndX( m_item->GetStartX() + rectangle_width );
 m_item->SetEndY( m_item->GetStartY() + rectangle_height );
 }
 }
 }
 
 m_item->SetRectangle( m_rectangleHeight.GetValue(), m_rectangleWidth.GetValue() );
 }
 
 
 // For Bezier curve: Set the two control points
 if( m_item->GetShape() == SHAPE_T::BEZIER )
 {
 m_item->SetBezierC1( VECTOR2I( m_bezierCtrl1X.GetIntValue(), m_bezierCtrl1Y.GetIntValue() ) );
 m_item->SetBezierC2( VECTOR2I( m_bezierCtrl2X.GetIntValue(), m_bezierCtrl2Y.GetIntValue() ) );
 }
 
 if( m_item->GetShape() == SHAPE_T::ARC )
 {
 VECTOR2D c = CalcArcCenter( m_item->GetStart(), m_item->GetEnd(), m_angle.GetAngleValue() );
 
 m_item->SetCenter( c );
 }
 
 bool wasLocked = m_item->IsLocked();
 
 m_item->SetFilled( m_filledCtrl->GetValue() );
 m_item->SetLocked( m_locked->GetValue() );
 
 STROKE_PARAMS stroke = m_item->GetStroke();
 
 stroke.SetWidth( m_thickness.GetIntValue() );
 
 auto it = lineTypeNames.begin();
 std::advance( it, m_lineStyleCombo->GetSelection() );
 
 if( it == lineTypeNames.end() )
 stroke.SetLineStyle( LINE_STYLE::DEFAULT );
 else
 stroke.SetLineStyle( it->first );
 
 m_item->SetStroke( stroke );
 
 m_item->SetLayer( ToLAYER_ID( layer ) );
 
 m_item->RebuildBezierToSegmentsPointsList( m_item->GetWidth() );
 
 if( m_item->IsOnCopperLayer() )
 m_item->SetNetCode( m_netSelector->GetSelectedNetcode() );
 else
 m_item->SetNetCode( -1 );
 
 commit.Push( _( "Modify drawing properties" ) );
 
 // Notify clients which treat locked and unlocked items differently (ie: POINT_EDITOR)
 if( wasLocked != m_item->IsLocked() )
 m_parent->GetToolManager()->PostEvent( EVENTS::SelectedEvent );
 
 return true;
}
 
 
bool DIALOG_SHAPE_PROPERTIES::Validate()
{
 wxArrayString errors;
 
 if( !DIALOG_SHAPE_PROPERTIES_BASE::Validate() )
 return false;
 
 // Type specific checks.
 switch( m_item->GetShape() )
 {
 case SHAPE_T::ARC:
 // Check angle of arc.
 if( m_angle.GetAngleValue() == ANGLE_0 )
 errors.Add( _( "Arc angle cannot be zero." ) );
 
 if( m_startX.GetValue() == m_endX.GetValue() && m_startY.GetValue() == m_endY.GetValue() )
 {
 errors.Add( wxString::Format( _( "Invalid Arc with radius %f and angle %f." ),
 0.0, m_angle.GetDoubleValue() ) );
 }
 else
 {
 VECTOR2D start( m_startX.GetIntValue(), m_startY.GetIntValue() );
 VECTOR2D end( m_endX.GetIntValue(), m_endY.GetIntValue() );
 VECTOR2D center = CalcArcCenter( start, end, m_angle.GetAngleValue() );
 
 double radius = ( center - start ).EuclideanNorm();
 double max_offset = std::max( std::abs( center.x ) + radius,
 std::abs( center.y ) + radius );
 
 if( max_offset >= ( std::numeric_limits<VECTOR2I::coord_type>::max() / 2.0 )
 || center == start || center == end )
 {
 errors.Add( wxString::Format( _( "Invalid Arc with radius %f and angle %f." ),
 radius, m_angle.GetDoubleValue() ) );
 }
 }
 
 if( m_thickness.GetValue() <= 0 )
 errors.Add( _( "Line width must be greater than zero." ) );
 
 break;
 
 case SHAPE_T::CIRCLE:
 // Check radius.
 if( m_endX.GetValue() <= 0 )
 errors.Add( _( "Radius must be greater than zero." ) );
 
 if( !m_filledCtrl->GetValue() && m_thickness.GetValue() <= 0 )
 errors.Add( _( "Line width must be greater than zero for an unfilled circle." ) );
 
 break;
 
 case SHAPE_T::RECTANGLE:
 // Check for null rect.
 if( m_startX.GetValue() == m_endX.GetValue() && m_startY.GetValue() == m_endY.GetValue() )
 errors.Add( _( "Rectangle cannot be empty." ) );
 
 if( !m_filledCtrl->GetValue() && m_thickness.GetValue() <= 0 )
 errors.Add( _( "Line width must be greater than zero for an unfilled rectangle." ) );
 
 break;
 
 case SHAPE_T::POLY:
 if( !m_filledCtrl->GetValue() && m_thickness.GetValue() <= 0 )
 errors.Add( _( "Line width must be greater than zero for an unfilled polygon." ) );
 
 break;
 
 case SHAPE_T::SEGMENT:
 if( m_thickness.GetValue() <= 0 )
 errors.Add( _( "Line width must be greater than zero." ) );
 
 break;
 
 case SHAPE_T::BEZIER:
 if( !m_filledCtrl->GetValue() && m_thickness.GetValue() <= 0 )
 errors.Add( _( "Line width must be greater than zero for an unfilled curve." ) );
 
 break;
 
 default:
 UNIMPLEMENTED_FOR( m_item->SHAPE_T_asString() );
 break;
 }
 
 if( errors.GetCount() )
 {
 HTML_MESSAGE_BOX dlg( this, _( "Error List" ) );
 dlg.ListSet( errors );
 dlg.ShowModal();
 }
 
 return errors.GetCount() == 0;
}