panel_text_variables.cpp

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/*
 * This program source code file is part of KICAD, a free EDA CAD application.
 *
 * Copyright (C) 2020-2022 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 <panel_text_variables.h>
 
#include <bitmaps.h>
#include <confirm.h>
#include <validators.h>
#include <project.h>
#include <grid_tricks.h>
#include <widgets/std_bitmap_button.h>
 
#include <algorithm>
 
enum TEXT_VAR_GRID_COLUMNS
{
 TV_NAME_COL = 0,
 TV_VALUE_COL
};
 
 
PANEL_TEXT_VARIABLES::PANEL_TEXT_VARIABLES( wxWindow* aParent, PROJECT* aProject ) :
 PANEL_TEXT_VARIABLES_BASE( aParent ),
 m_project( aProject ),
 m_lastCheckedTicker( 0 ),
 m_errorRow( -1 ), m_errorCol( -1 ),
 m_gridWidthsDirty( true )
{
 m_btnAddTextVar->SetBitmap( KiBitmap( BITMAPS::small_plus ) );
 m_btnDeleteTextVar->SetBitmap( KiBitmap( BITMAPS::small_trash ) );
 
 m_TextVars->ClearRows();
 
 // prohibit these characters in the alias names: []{}()%~<>"='`;:.,&?/\|$
 m_nameValidator.SetStyle( wxFILTER_EXCLUDE_CHAR_LIST );
 m_nameValidator.SetCharExcludes( wxT( "{}[]()%~<>\"='`;:.,&?/\\|$" ) );
 
 m_TextVars->PushEventHandler( new GRID_TRICKS( m_TextVars, [this]( wxCommandEvent& aEvent )
 {
 OnAddTextVar( aEvent );
 } ) );
 m_TextVars->SetSelectionMode( wxGrid::wxGridSelectionModes::wxGridSelectRows );
 
 // wxFormBuilder doesn't include this event...
 m_TextVars->Connect( wxEVT_GRID_CELL_CHANGING,
 wxGridEventHandler( PANEL_TEXT_VARIABLES::OnGridCellChanging ),
 nullptr, this );
 
 Bind( wxEVT_IDLE,
 [this]( wxIdleEvent& aEvent )
 {
 // Careful of consuming CPU in an idle event handler. Check the ticker first to
 // see if there's even a possibility of the text variables having changed.
 if( m_project->GetTextVarsTicker() > m_lastCheckedTicker )
 {
 wxWindow* dialog = wxGetTopLevelParent( this );
 wxWindow* topLevelFocus = wxGetTopLevelParent( wxWindow::FindFocus() );
 
 if( topLevelFocus == dialog && m_lastLoaded != m_project->GetTextVars() )
 checkReload();
 }
 } );
}
 
 
PANEL_TEXT_VARIABLES::~PANEL_TEXT_VARIABLES()
{
 // Delete the GRID_TRICKS.
 m_TextVars->PopEventHandler( true );
 
 m_TextVars->Disconnect( wxEVT_GRID_CELL_CHANGING,
 wxGridEventHandler( PANEL_TEXT_VARIABLES::OnGridCellChanging ),
 nullptr, this );
}
 
 
void PANEL_TEXT_VARIABLES::checkReload()
{
 // MUST update the ticker before calling IsOK (or we'll end up re-entering through the idle
 // event until we crash the stack).
 m_lastCheckedTicker = m_project->GetTextVarsTicker();
 
 if( IsOK( m_parent, _( "The text variables have been changed outside the Setup dialog.\n"
 "Do you wish to reload them?" ) ) )
 {
 m_TextVars->ClearRows();
 
 m_lastLoaded = m_project->GetTextVars();
 
 for( const auto& var : m_lastLoaded )
 AppendTextVar( var.first, var.second );
 }
}
 
 
bool PANEL_TEXT_VARIABLES::TransferDataToWindow()
{
 m_lastLoaded = m_project->GetTextVars();
 m_lastCheckedTicker = m_project->GetTextVarsTicker();
 
 for( const auto& var : m_lastLoaded )
 AppendTextVar( var.first, var.second );
 
 return true;
}
 
 
void PANEL_TEXT_VARIABLES::AppendTextVar( const wxString& aName, const wxString& aValue )
{
 int i = m_TextVars->GetNumberRows();
 
 m_TextVars->AppendRows( 1 );
 
 m_TextVars->SetCellValue( i, TV_NAME_COL, aName );
 
 wxGridCellAttr* nameCellAttr = m_TextVars->GetOrCreateCellAttr( i, TV_NAME_COL );
 wxGridCellTextEditor* nameTextEditor = new GRID_CELL_TEXT_EDITOR();
 nameTextEditor->SetValidator( m_nameValidator );
 nameCellAttr->SetEditor( nameTextEditor );
 nameCellAttr->DecRef();
 
 m_TextVars->SetCellValue( i, TV_VALUE_COL, aValue );
}
 
 
bool PANEL_TEXT_VARIABLES::TransferDataFromWindow()
{
 if( !m_TextVars->CommitPendingChanges() )
 return false;
 
 for( int row = 0; row < m_TextVars->GetNumberRows(); ++row )
 {
 if( m_TextVars->GetCellValue( row, TV_NAME_COL ).IsEmpty() )
 {
 m_errorRow = row;
 m_errorCol = TV_NAME_COL;
 m_errorMsg = _( "Variable name cannot be empty." );
 return false;
 }
 }
 
 std::map<wxString, wxString>& variables = m_project->GetTextVars();
 
 variables.clear();
 
 for( int row = 0; row < m_TextVars->GetNumberRows(); ++row )
 {
 wxString name = m_TextVars->GetCellValue( row, TV_NAME_COL );
 wxString value = m_TextVars->GetCellValue( row, TV_VALUE_COL );
 variables[ name ] = value;
 }
 
 return true;
}
 
 
void PANEL_TEXT_VARIABLES::OnGridCellChanging( wxGridEvent& event )
{
 int row = event.GetRow();
 int col = event.GetCol();
 wxString text = event.GetString();
 
 if( text.IsEmpty() && col == TV_NAME_COL )
 {
 m_errorMsg = _( "Variable name cannot be empty." );
 m_errorRow = row;
 m_errorCol = col;
 
 event.Veto();
 }
}
 
 
void PANEL_TEXT_VARIABLES::OnAddTextVar( wxCommandEvent& event )
{
 if( !m_TextVars->CommitPendingChanges() )
 return;
 
 AppendTextVar( wxEmptyString, wxEmptyString );
 
 m_TextVars->MakeCellVisible( m_TextVars->GetNumberRows() - 1, TV_NAME_COL );
 m_TextVars->SetGridCursor( m_TextVars->GetNumberRows() - 1, TV_NAME_COL );
 
 m_TextVars->EnableCellEditControl( true );
 m_TextVars->ShowCellEditControl();
}
 
 
void PANEL_TEXT_VARIABLES::OnRemoveTextVar( wxCommandEvent& event )
{
 int curRow = m_TextVars->GetGridCursorRow();
 
 if( curRow < 0 || m_TextVars->GetNumberRows() <= curRow )
 return;
 
 m_TextVars->CommitPendingChanges( true /* silent mode; we don't care if it's valid */ );
 m_TextVars->DeleteRows( curRow, 1 );
 
 m_TextVars->MakeCellVisible( std::max( 0, curRow-1 ), m_TextVars->GetGridCursorCol() );
 m_TextVars->SetGridCursor( std::max( 0, curRow-1 ), m_TextVars->GetGridCursorCol() );
}
 
 
void PANEL_TEXT_VARIABLES::OnGridCellChange( wxGridEvent& aEvent )
{
 m_gridWidthsDirty = true;
 
 aEvent.Skip();
}
 
 
void PANEL_TEXT_VARIABLES::OnUpdateUI( wxUpdateUIEvent& event )
{
 if( m_gridWidthsDirty )
 {
 int width = m_TextVars->GetClientRect().GetWidth();
 
 m_TextVars->AutoSizeColumn( TV_NAME_COL );
 m_TextVars->SetColSize( TV_NAME_COL, std::max( 72, m_TextVars->GetColSize( TV_NAME_COL ) ) );
 
 m_TextVars->SetColSize( TV_VALUE_COL, std::max( 120, width - m_TextVars->GetColSize( TV_NAME_COL ) ) );
 m_gridWidthsDirty = false;
 }
 
 // Handle a grid error. This is delayed to OnUpdateUI so that we can change focus
 // even when the original validation was triggered from a killFocus event (and for
 // dialog with notebooks, so that the corresponding notebook page can be shown in
 // the background when triggered from an OK).
 if( !m_errorMsg.IsEmpty() )
 {
 // We will re-enter this routine when the error dialog is displayed, so make
 // sure we don't keep putting up more dialogs.
 wxString errorMsg = m_errorMsg;
 m_errorMsg = wxEmptyString;
 
 DisplayErrorMessage( this, errorMsg );
 
 m_TextVars->SetFocus();
 m_TextVars->MakeCellVisible( m_errorRow, m_errorCol );
 m_TextVars->SetGridCursor( m_errorRow, m_errorCol );
 
 m_TextVars->EnableCellEditControl( true );
 m_TextVars->ShowCellEditControl();
 }
}
 
 
void PANEL_TEXT_VARIABLES::OnGridSize( wxSizeEvent& event )
{
 m_gridWidthsDirty = true;
 
 event.Skip();
}