conditional_menu.h

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2015 CERN
 * Copyright (C) 2020 KiCad Developers, see AUTHORS.txt for contributors.
 *
 * @author Maciej Suminski <[email protected]>
 *
 * 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
 */
 
#ifndef CONDITIONAL_MENU_H
#define CONDITIONAL_MENU_H
 
#include <tool/selection_conditions.h>
#include <tool/action_menu.h>
#include <list>
 
class PCB_SELECTION_TOOL;
class TOOL_ACTION;
class TOOL_INTERACTIVE;
 
enum class BITMAPS : unsigned int;
 
 
class CONDITIONAL_MENU : public ACTION_MENU
{
public:
 static const int ANY_ORDER = -1;
 
 CONDITIONAL_MENU( TOOL_INTERACTIVE* aTool );
 
 ACTION_MENU* create() const override;
 
 void AddItem( const TOOL_ACTION& aAction, const SELECTION_CONDITION& aCondition,
 int aOrder = ANY_ORDER );
 
 void AddItem( int aId, const wxString& aText, const wxString& aTooltip, BITMAPS aIcon,
 const SELECTION_CONDITION& aCondition, int aOrder = ANY_ORDER );
 
 void AddCheckItem( const TOOL_ACTION& aAction, const SELECTION_CONDITION& aCondition,
 int aOrder = ANY_ORDER );
 
 void AddCheckItem( int aId, const wxString& aText, const wxString& aTooltip, BITMAPS aIcon,
 const SELECTION_CONDITION& aCondition, int aOrder = ANY_ORDER );
 
 void AddMenu( ACTION_MENU* aMenu,
 const SELECTION_CONDITION& aCondition = SELECTION_CONDITIONS::ShowAlways,
 int aOrder = ANY_ORDER );
 
 void AddSeparator( int aOrder = ANY_ORDER );
 
 void AddSeparator( const SELECTION_CONDITION& aCondition, int aOrder = ANY_ORDER );
 
 void Evaluate( const SELECTION& aSelection );
 
 void Resolve();
 
private:
 class ENTRY
 {
 public:
 ENTRY( const TOOL_ACTION* aAction, SELECTION_CONDITION aCondition, int aOrder,
 bool aCheckmark ) :
 m_type( ACTION ),
 m_icon( static_cast<BITMAPS>( 0 ) ),
 m_condition( std::move( aCondition ) ),
 m_order( aOrder ),
 m_isCheckmarkEntry( aCheckmark )
 {
 m_data.action = aAction;
 }
 
 ENTRY( ACTION_MENU* aMenu, SELECTION_CONDITION aCondition, int aOrder ) :
 m_type( MENU ),
 m_icon( static_cast<BITMAPS>( 0 ) ),
 m_condition( std::move( aCondition ) ),
 m_order( aOrder ),
 m_isCheckmarkEntry( false )
 {
 m_data.menu = aMenu;
 }
 
 ENTRY( const wxMenuItem& aItem, BITMAPS aBitmap,
 SELECTION_CONDITION aCondition, int aOrder, bool aCheckmark ) :
 m_type( WXITEM ),
 m_icon( aBitmap ),
 m_condition( std::move( aCondition ) ),
 m_order( aOrder ),
 m_isCheckmarkEntry( aCheckmark )
 {
 m_data.wxItem = new wxMenuItem( nullptr, aItem.GetId(), aItem.GetItemLabel(),
 aItem.GetHelp(), aItem.GetKind() );
 }
 
 // Separator
 ENTRY( SELECTION_CONDITION aCondition, int aOrder ) :
 m_type( SEPARATOR ),
 m_icon( static_cast<BITMAPS>( 0 ) ),
 m_data(),
 m_condition( std::move( aCondition ) ),
 m_order( aOrder ),
 m_isCheckmarkEntry( false )
 {
 }
 
 ENTRY( const ENTRY& aEntry );
 
 ~ENTRY();
 
 enum ENTRY_TYPE {
 ACTION,
 MENU,
 WXITEM,
 SEPARATOR
 };
 
 inline ENTRY_TYPE Type() const
 {
 return m_type;
 }
 
 inline BITMAPS GetIcon() const
 {
 return m_icon;
 }
 
 inline const TOOL_ACTION* Action() const
 {
 assert( m_type == ACTION );
 return m_data.action;
 }
 
 inline ACTION_MENU* Menu() const
 {
 assert( m_type == MENU );
 return m_data.menu;
 }
 
 inline wxMenuItem* wxItem() const
 {
 assert( m_type == WXITEM );
 return m_data.wxItem;
 }
 
 inline bool IsCheckmarkEntry() const
 {
 return m_isCheckmarkEntry;
 }
 
 inline const SELECTION_CONDITION& Condition() const
 {
 return m_condition;
 }
 
 inline int Order() const
 {
 return m_order;
 }
 
 inline void SetOrder( int aOrder )
 {
 m_order = aOrder;
 }
 
 private:
 ENTRY_TYPE m_type;
 BITMAPS m_icon;
 
 // This class owns the wxItem object and needs to create, copy and delete it accordingly
 // But it does not own the action nor menu item
 union {
 const TOOL_ACTION* action;
 ACTION_MENU* menu;
 wxMenuItem* wxItem;
 } m_data;
 
 SELECTION_CONDITION m_condition;
 
 int m_order;
 
 bool m_isCheckmarkEntry;
 };
 
 void addEntry( ENTRY aEntry );
 
 std::list<ENTRY> m_entries;
};
 
#endif /* CONDITIONAL_MENU_H */