kicad/eeschema/sheet.cpp

583 lines
22 KiB
C++
Raw Normal View History

/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2015 Jean-Pierre Charras, jp.charras at wanadoo.fr
* Copyright (C) 2004-2021 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 2
* 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
*/
#include <sch_draw_panel.h>
#include <confirm.h>
#include <kiface_i.h>
Use legacy schematic plugin for loading schematics in all code paths. Use the legacy plugin schematic loader in the sheet edit and append schematic code paths. Check for fully qualified LIB_ID objects (must have library nickname) when loading existing schematics when edit sheets. Rewrite append schematic feature to handle import issues rather than change the name and file name of all of the sheets in the imported schematic. This includes the following: - Load the schematic into a temporary SCH_SHEET object. - Make sure the imported schematic does not cause any hierarchy recursion issues. - Verify the imported schematic uses fully qualified #LIB_ID objects (symbol library table). - Check to see if any symbol libraries need to be added to the current project's symbol library table. This includes: - Check if the symbol library already exists in the project or global symbol library table. - Convert symbol library URLS that use the ${KIPRJMOD} environment variable to absolute paths. ${KIPRJMOD} will not be the same for this project. - Check for duplicate symbol library nicknames and change the new symbol library nickname to prevent library name clashes. - Update all schematic symbol LIB_ID object library nicknames when the library nickname was changed to prevent clashes. - Check for duplicate sheet names which is illegal and automatically rename any duplicate sheets in the imported schematic. - Clear all of the annotation in the imported schematic to prevent clashes. - Append the objects from the temporary sheet to the current page. - Replace any duplicate time stamps. - Refresh the symbol library links. Add support code to SCH_SCREEN object to assist with schematic import. Doxygen comment cleaning. Fixes lp:1731760 https://bugs.launchpad.net/kicad/+bug/1731760
2017-11-17 17:00:04 +00:00
#include <project.h>
#include <wildcards_and_files_ext.h>
#include <tool/tool_manager.h>
2018-01-30 10:49:51 +00:00
#include <sch_edit_frame.h>
#include <sch_plugins/legacy/sch_legacy_plugin.h>
#include <sch_sheet.h>
#include <sch_sheet_path.h>
#include <sch_view.h>
2020-04-14 12:25:00 +00:00
#include <sch_painter.h>
#include <schematic.h>
#include <symbol_lib_table.h>
#include <dialogs/dialog_sheet_properties.h>
#include <tool/actions.h>
#include <wx/clipbrd.h>
#include <wx/dcmemory.h>
2021-06-03 12:11:15 +00:00
#include <wx/log.h>
2020-03-06 20:02:58 +00:00
bool SCH_EDIT_FRAME::CheckSheetForRecursion( SCH_SHEET* aSheet, SCH_SHEET_PATH* aHierarchy )
{
wxASSERT( aSheet && aHierarchy );
wxString msg;
SCH_SHEET_LIST hierarchy = Schematic().GetSheets(); // The full schematic sheet hierarchy.
SCH_SHEET_LIST sheetHierarchy( aSheet ); // This is the hierarchy of the loaded file.
wxFileName destFile = aHierarchy->LastScreen()->GetFileName();
// SCH_SCREEN object file paths are expected to be absolute. If this assert fires,
// something is seriously broken.
wxASSERT( destFile.IsAbsolute() );
if( hierarchy.TestForRecursion( sheetHierarchy, destFile.GetFullPath() ) )
{
msg.Printf( _( "The sheet changes cannot be made because the destination sheet already "
2021-06-28 23:44:07 +00:00
"has the sheet '%s' or one of its subsheets as a parent somewhere in the "
"schematic hierarchy." ),
destFile.GetFullPath() );
DisplayError( this, msg );
return true;
}
return false;
}
bool SCH_EDIT_FRAME::checkForNoFullyDefinedLibIds( SCH_SHEET* aSheet )
{
wxASSERT( aSheet && aSheet->GetScreen() );
wxString msg;
SCH_SCREENS newScreens( aSheet );
if( newScreens.HasNoFullyDefinedLibIds() )
{
msg.Printf( _( "The schematic '%s' has not had its symbol library links remapped "
"to the symbol library table. The project this schematic belongs to "
"must first be remapped before it can be imported into the current "
"project." ),
aSheet->GetScreen()->GetFileName() );
DisplayInfoMessage( this, msg );
return true;
}
return false;
}
void SCH_EDIT_FRAME::InitSheet( SCH_SHEET* aSheet, const wxString& aNewFilename )
{
aSheet->SetScreen( new SCH_SCREEN( &Schematic() ) );
aSheet->GetScreen()->SetContentModified();
aSheet->GetScreen()->SetFileName( aNewFilename );
}
bool SCH_EDIT_FRAME::LoadSheetFromFile( SCH_SHEET* aSheet, SCH_SHEET_PATH* aHierarchy,
const wxString& aFileName )
{
wxASSERT( aSheet && aHierarchy );
wxString msg;
wxString topLevelSheetPath;
wxFileName tmp;
wxFileName currentSheetFileName;
bool libTableChanged = false;
Make the new schematic and symbol library file formats the default. This is a very large and potentially disruptive change so this will be an unusually long and detailed commit message. The new file formats are now the default in both the schematic and symbol library editors. Existing symbol libraries will be saved in their current format until new features are added to library symbols. Once this happens, both the legacy schematic and symbol file formats will be no longer be savable and existing libraries will have to be converted. Saving to the legacy file formats is still available for round robin testing and should not be used for normal editing. When loading the legacy schematic file, it is imperative that the schematic library symbols are rescued and/or remapped to valid library identifiers. Otherwise, there will be no way to link to the original library symbol and the user will be required manually set the library identifier. The cached symbol will be saved in the schematic file so the last library symbol in the cache will still be used but there will be no way to update it from the original library. The next save after loading a legacy schematic file will be converted to the s-expression file format. Schematics with hierarchical sheets will automatically have all sheet file name extensions changed to .kicad_sym and saved to the new format as well. Appending schematics requires that the schematic to append has already been converted to the new file format. This is required to ensure that library symbols are guaranteed to be valid for the appended schematic. The schematic symbol library symbol link resolution has been moved out of the SCH_COMPONENT object and move into the SCH_SCREEN object that owns the symbol. This was done to ensure that there is a single place where the library symbol links get resolved rather than the dozen or so different code paths that previously existed. It also removes the necessity of the SCH_COMPONENT object of requiring any knowledge of the symbol library table and/or the cache library. When opening an s-expression schematic, the legacy cache library is not loaded so any library symbols not rescued cannot be loaded. Broken library symbol links will have to be manually resolved by adding the cache library to the symbol library table and changing the links in the schematic symbol. Now that the library symbols are embedded in the schematic file, the SCH_SCREEN object maintains the list of library symbols for the schematic automatically. No external manipulation of this library cache should ever occur. ADDED: S-expression schematic and symbol library file formats.
2020-04-16 16:43:50 +00:00
SCH_IO_MGR::SCH_FILE_T schFileType = SCH_IO_MGR::GuessPluginTypeFromSchPath( aFileName );
SCH_PLUGIN::SCH_PLUGIN_RELEASER pi( SCH_IO_MGR::FindPlugin( schFileType ) );
std::unique_ptr< SCH_SHEET> newSheet = std::make_unique<SCH_SHEET>( &Schematic() );
// This will cause the sheet UUID to be set to the loaded schematic UUID. This is required
// to ensure all of the sheet paths in any subsheets are correctly generated.
const_cast<KIID&>( newSheet->m_Uuid ) = KIID( 0 );
wxFileName fileName( aFileName );
if( !fileName.IsAbsolute() && !fileName.MakeAbsolute() )
{
2021-06-07 12:02:29 +00:00
wxFAIL_MSG( wxString::Format( "Cannot make file name '%s' path absolute.", aFileName ) );
return false;
}
wxString fullFilename = fileName.GetFullPath();
try
{
if( aSheet->GetScreen() != nullptr )
{
newSheet.reset( pi->Load( fullFilename, &Schematic() ) );
}
else
{
newSheet->SetFileName( fullFilename );
pi->Load( fullFilename, &Schematic(), newSheet.get() );
}
if( !pi->GetError().IsEmpty() )
{
msg = _( "The entire schematic could not be loaded. Errors occurred attempting "
"to load hierarchical sheet schematics." );
wxMessageDialog msgDlg1( this, msg, _( "Schematic Load Error" ),
wxOK | wxCANCEL | wxCANCEL_DEFAULT |
wxCENTER | wxICON_QUESTION );
msgDlg1.SetOKLabel( wxMessageDialog::ButtonLabel( _( "Use partial schematic" ) ) );
msgDlg1.SetExtendedMessage( pi->GetError() );
if( msgDlg1.ShowModal() == wxID_CANCEL )
return false;
}
}
catch( const IO_ERROR& ioe )
{
msg.Printf( _( "Error loading schematic '%s'." ), fullFilename );
DisplayErrorMessage( this, msg, ioe.What() );
msg.Printf( _( "Failed to load '%s'." ), fullFilename );
SetMsgPanel( wxEmptyString, msg );
return false;
}
tmp = fileName;
// If the loaded schematic is in a different folder from the current project and
// it contains hierarchical sheets, the hierarchical sheet paths need to be updated.
if( fileName.GetPathWithSep() != Prj().GetProjectPath() && newSheet->CountSheets() )
{
// Give the user the option to choose relative path if possible.
if( tmp.MakeRelativeTo( Prj().GetProjectPath() ) )
topLevelSheetPath = tmp.GetPathWithSep();
else
topLevelSheetPath = fileName.GetPathWithSep();
if( wxFileName::GetPathSeparator() == '\\' )
topLevelSheetPath.Replace( "\\", "/" );
}
// Make sure any new sheet changes do not cause any recursion issues.
SCH_SHEET_LIST hierarchy = Schematic().GetSheets(); // This is the schematic sheet hierarchy.
SCH_SHEET_LIST sheetHierarchy( newSheet.get() ); // This is the hierarchy of the loaded file.
2020-03-06 20:02:58 +00:00
if( CheckSheetForRecursion( newSheet.get(), aHierarchy )
|| checkForNoFullyDefinedLibIds( newSheet.get() ) )
{
return false;
}
// Make a valiant attempt to warn the user of all possible scenarios where there could
// be broken symbol library links.
wxArrayString names;
wxArrayString newLibNames;
SCH_SCREENS newScreens( newSheet.get() ); // All screens associated with the import.
SCH_SCREENS prjScreens( &Schematic().Root() );
newScreens.GetLibNicknames( names );
wxMessageDialog::ButtonLabel okButtonLabel( _( "Continue Load" ) );
wxMessageDialog::ButtonLabel cancelButtonLabel( _( "Cancel Load" ) );
if( fileName.GetPathWithSep() == Prj().GetProjectPath()
&& !prjScreens.HasSchematic( fullFilename ) )
{
// A schematic in the current project path that isn't part of the current project.
// It's possible the user copied this schematic from another project so the library
// links may not be available. Even this is check is no guarantee that all symbol
// library links are valid but it's better than nothing.
2021-06-07 12:02:29 +00:00
for( const wxString& name : names )
{
if( !Prj().SchSymbolLibTable()->HasLibrary( name ) )
newLibNames.Add( name );
}
if( !newLibNames.IsEmpty() )
{
msg = _( "There are library names in the loaded schematic that are missing "
"from the project library table. This may result in broken symbol "
"library links for the loaded schematic. Do you wish to continue?" );
wxMessageDialog msgDlg3( this, msg, _( "Continue Load Schematic" ),
wxOK | wxCANCEL | wxCANCEL_DEFAULT |
wxCENTER | wxICON_QUESTION );
msgDlg3.SetOKCancelLabels( okButtonLabel, cancelButtonLabel );
if( msgDlg3.ShowModal() == wxID_CANCEL )
return false;
}
}
else if( fileName.GetPathWithSep() != Prj().GetProjectPath() )
{
// A schematic loaded from a path other than the current project path.
// If there are symbol libraries in the imported schematic that are not in the
// symbol library table of this project, there could be a lot of broken symbol
// library links. Attempt to add the missing libraries to the project symbol
// library table.
wxArrayString duplicateLibNames;
2021-06-07 12:02:29 +00:00
for( const wxString& name : names )
{
if( !Prj().SchSymbolLibTable()->HasLibrary( name ) )
newLibNames.Add( name );
else
duplicateLibNames.Add( name );
}
SYMBOL_LIB_TABLE table;
wxFileName symLibTableFn( fileName.GetPath(),
SYMBOL_LIB_TABLE::GetSymbolLibTableFileName() );
// If there are any new or duplicate libraries, check to see if it's possible that
// there could be any missing libraries that would cause broken symbol library links.
if( !newLibNames.IsEmpty() || !duplicateLibNames.IsEmpty() )
{
if( !symLibTableFn.Exists() || !symLibTableFn.IsFileReadable() )
{
msg.Printf( _( "The project library table '%s' does not exist or cannot "
"be read. This may result in broken symbol links for the "
"schematic. Do you wish to continue?" ),
fileName.GetFullPath() );
wxMessageDialog msgDlg4( this, msg, _( "Continue Load Schematic" ),
wxOK | wxCANCEL | wxCANCEL_DEFAULT |
wxCENTER | wxICON_QUESTION );
msgDlg4.SetOKCancelLabels( okButtonLabel, cancelButtonLabel );
if( msgDlg4.ShowModal() == wxID_CANCEL )
return false;
}
else
{
try
{
table.Load( symLibTableFn.GetFullPath() );
}
catch( const IO_ERROR& ioe )
{
msg.Printf( _( "Error loading the symbol library table '%s'." ),
symLibTableFn.GetFullPath() );
DisplayErrorMessage( nullptr, msg, ioe.What() );
return false;
}
}
}
// Check to see if any of the symbol libraries found in the appended schematic do
// not exist in the current project are missing from the appended project symbol
// library table.
if( !newLibNames.IsEmpty() )
{
bool missingLibNames = table.IsEmpty();
if( !missingLibNames )
{
2021-06-07 12:02:29 +00:00
for( const wxString& newLibName : newLibNames )
{
if( !table.HasLibrary( newLibName ) )
{
missingLibNames = true;
break;
}
}
}
if( missingLibNames )
{
msg = _( "There are library names in the loaded schematic that are missing "
"from the loaded schematic project library table. This may result "
"in broken symbol library links for the schematic. "
"Do you wish to continue?" );
wxMessageDialog msgDlg5( this, msg, _( "Continue Load Schematic" ),
wxOK | wxCANCEL | wxCANCEL_DEFAULT |
wxCENTER | wxICON_QUESTION );
msgDlg5.SetOKCancelLabels( okButtonLabel, cancelButtonLabel );
if( msgDlg5.ShowModal() == wxID_CANCEL )
return false;
}
}
// The library name already exists in the current project. Check to see if the
// duplicate name is the same library in the current project. If it's not, it's
// most likely that the symbol library links will be broken.
if( !duplicateLibNames.IsEmpty() && !table.IsEmpty() )
{
bool libNameConflict = false;
2021-06-07 12:02:29 +00:00
for( const wxString& duplicateLibName : duplicateLibNames )
{
const SYMBOL_LIB_TABLE_ROW* thisRow = nullptr;
const SYMBOL_LIB_TABLE_ROW* otherRow = nullptr;
if( Prj().SchSymbolLibTable()->HasLibrary( duplicateLibName ) )
thisRow = Prj().SchSymbolLibTable()->FindRow( duplicateLibName );
if( table.HasLibrary( duplicateLibName ) )
otherRow = table.FindRow( duplicateLibName );
// It's in the global library table so there is no conflict.
if( thisRow && !otherRow )
continue;
if( !thisRow || !otherRow )
continue;
wxFileName otherUriFileName;
wxString thisURI = thisRow->GetFullURI( true );
wxString otherURI = otherRow->GetFullURI( false);
if( otherURI.Contains( "${KIPRJMOD}" ) || otherURI.Contains( "$(KIPRJMOD)" ) )
{
// Cannot use relative paths here, "${KIPRJMOD}../path-to-cache-lib" does
// not expand to a valid symbol library path.
otherUriFileName.SetPath( fileName.GetPath() );
otherUriFileName.SetFullName( otherURI.AfterLast( '}' ) );
otherURI = otherUriFileName.GetFullPath();
}
if( thisURI != otherURI )
{
libNameConflict = true;
break;
}
}
if( libNameConflict )
{
msg = _( "A duplicate library name that references a different library exists "
"in the current library table. This conflict cannot be resolved and "
"may result in broken symbol library links for the schematic. "
"Do you wish to continue?" );
wxMessageDialog msgDlg6( this, msg, _( "Continue Load Schematic" ),
wxOK | wxCANCEL | wxCANCEL_DEFAULT |
wxCENTER | wxICON_QUESTION );
msgDlg6.SetOKCancelLabels( okButtonLabel, cancelButtonLabel );
if( msgDlg6.ShowModal() == wxID_CANCEL )
return false;
}
}
// All (most?) of the possible broken symbol library link cases are covered. Map the
// new appended schematic project symbol library table entries to the current project
// symbol library table.
if( !newLibNames.IsEmpty() && !table.IsEmpty() )
{
for( const wxString& libName : newLibNames )
{
if( !table.HasLibrary( libName )
|| Prj().SchSymbolLibTable()->HasLibrary( libName ) )
{
continue;
}
// Don't expand environment variable because KIPRJMOD will not be correct
// for a different project.
wxString uri = table.GetFullURI( libName, false );
wxFileName newLib;
if( uri.Contains( "${KIPRJMOD}" ) || uri.Contains( "$(KIPRJMOD)" ) )
{
// Cannot use relative paths here, "${KIPRJMOD}../path-to-cache-lib" does
// not expand to a valid symbol library path.
newLib.SetPath( fileName.GetPath() );
newLib.SetFullName( uri.AfterLast( '}' ) );
uri = newLib.GetFullPath();
}
else
{
uri = table.GetFullURI( libName );
}
// Add the library from the imported project to the current project
// symbol library table.
const SYMBOL_LIB_TABLE_ROW* row = table.FindRow( libName );
wxCHECK( row, false );
SYMBOL_LIB_TABLE_ROW* newRow = new SYMBOL_LIB_TABLE_ROW( libName, uri,
row->GetType(),
row->GetOptions(),
row->GetDescr() );
Prj().SchSymbolLibTable()->InsertRow( newRow );
libTableChanged = true;
}
}
}
SCH_SCREEN* newScreen = newSheet->GetScreen();
wxCHECK_MSG( newScreen, false, "No screen defined for sheet." );
if( libTableChanged )
{
Prj().SchSymbolLibTable()->Save( Prj().GetProjectPath() +
SYMBOL_LIB_TABLE::GetSymbolLibTableFileName() );
}
// It is finally safe to add or append the imported schematic.
if( aSheet->GetScreen() == nullptr )
aSheet->SetScreen( newScreen );
else
aSheet->GetScreen()->Append( newScreen );
SCH_SCREENS allScreens( Schematic().Root() );
allScreens.ReplaceDuplicateTimeStamps();
return true;
}
bool SCH_EDIT_FRAME::EditSheetProperties( SCH_SHEET* aSheet, SCH_SHEET_PATH* aHierarchy,
bool* aClearAnnotationNewItems )
2007-05-06 16:03:28 +00:00
{
if( aSheet == nullptr || aHierarchy == nullptr )
return false;
// Get the new texts
DIALOG_SHEET_PROPERTIES dlg( this, aSheet, aClearAnnotationNewItems );
2007-05-06 16:03:28 +00:00
if( dlg.ShowModal() == wxID_CANCEL )
return false;
return true;
2007-05-06 16:03:28 +00:00
}
void SCH_EDIT_FRAME::DrawCurrentSheetToClipboard()
2019-05-28 18:44:14 +00:00
{
wxRect DrawArea;
BASE_SCREEN* screen = GetScreen();
2019-05-28 18:44:14 +00:00
DrawArea.SetSize( GetPageSizeIU() );
// Calculate a reasonable dc size, in pixels, and the dc scale to fit
// the drawings into the dc size
// scale is the ratio resolution (in PPI) / internal units
double ppi = 300; // Use 300 pixels per inch to create bitmap images on start
double inch2Iu = 1000.0 * IU_PER_MILS;
double scale = ppi / inch2Iu;
2019-05-28 18:44:14 +00:00
wxSize dcsize = DrawArea.GetSize();
int maxdim = std::max( dcsize.x, dcsize.y );
// the max size in pixels of the bitmap used to build the sheet copy
const int maxbitmapsize = 5600;
2019-05-28 18:44:14 +00:00
while( int( maxdim * scale ) > maxbitmapsize )
{
ppi = ppi / 1.5;
scale = ppi / inch2Iu;
}
dcsize.x *= scale;
dcsize.y *= scale;
// Set draw offset, zoom... to values needed to draw in the memory DC
// after saving initial values:
wxPoint tmp_startvisu = screen->m_StartVisu;
wxPoint old_org = screen->m_DrawOrg;
2019-05-28 18:44:14 +00:00
screen->m_DrawOrg.x = screen->m_DrawOrg.y = 0;
screen->m_StartVisu.x = screen->m_StartVisu.y = 0;
wxMemoryDC dc;
wxBitmap image( dcsize );
dc.SelectObject( image );
dc.Clear();
2019-05-28 18:44:14 +00:00
GRResetPenAndBrush( &dc );
GRForceBlackPen( false );
dc.SetUserScale( scale, scale );
2020-04-14 12:25:00 +00:00
GetRenderSettings()->SetPrintDC( &dc );
// Init the color of the layer actually used to print the drawing sheet:
GetRenderSettings()->SetLayerColor( LAYER_DRAWINGSHEET,
GetRenderSettings()->GetLayerColor( LAYER_SCHEMATIC_DRAWINGSHEET ) );
2020-04-14 12:25:00 +00:00
PrintPage( GetRenderSettings() );
2019-05-28 18:44:14 +00:00
{
wxLogNull doNotLog; // disable logging of failed clipboard actions
if( wxTheClipboard->Open() )
{
// This data objects are held by the clipboard, so do not delete them in the app.
wxBitmapDataObject* clipbrd_data = new wxBitmapDataObject( image );
wxTheClipboard->SetData( clipbrd_data );
wxTheClipboard->Flush(); // Allow data to be available after closing KiCad
wxTheClipboard->Close();
}
2019-05-28 18:44:14 +00:00
}
// Deselect Bitmap from DC in order to delete the MemoryDC
dc.SelectObject( wxNullBitmap );
GRForceBlackPen( false );
screen->m_StartVisu = tmp_startvisu;
screen->m_DrawOrg = old_org;
}
2020-03-06 20:02:58 +00:00
bool SCH_EDIT_FRAME::AllowCaseSensitiveFileNameClashes( const wxString& aSchematicFileName )
{
wxString msg;
SCH_SCREENS screens( Schematic().Root() );
wxFileName fn = aSchematicFileName;
wxCHECK( fn.IsAbsolute(), false );
if( eeconfig()->m_Appearance.show_sheet_filename_case_sensitivity_dialog
&& screens.CanCauseCaseSensitivityIssue( aSchematicFileName ) )
{
msg.Printf( _( "The file name '%s' can cause issues with an existing file name\n"
"already defined in the schematic on systems that support case\n"
"insensitive file names. This will cause issues if you copy this\n"
"project to an operating system that supports case insensitive file\n"
"names.\n\nDo you wish to continue?" ),
fn.GetName() );
wxRichMessageDialog dlg( this, msg, _( "Warning" ),
wxYES_NO | wxNO_DEFAULT | wxICON_QUESTION );
dlg.ShowCheckBox( _( "Do not show this message again." ) );
dlg.SetYesNoLabels( wxMessageDialog::ButtonLabel( _( "Create New Sheet" ) ),
wxMessageDialog::ButtonLabel( _( "Discard New Sheet" ) ) );
if( dlg.ShowModal() == wxID_NO )
return false;
eeconfig()->m_Appearance.show_sheet_filename_case_sensitivity_dialog =
!dlg.IsCheckBoxChecked();
}
return true;
}