tool_manager.h

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2013 CERN
 * Copyright (C) 2020 KiCad Developers, see AUTHORS.txt for contributors.
 *
 * @author Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
 * @author Maciej Suminski <maciej.suminski@cern.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.
 *
 * 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 __TOOL_MANAGER_H
#define __TOOL_MANAGER_H

#include <typeinfo>
#include <map>
#include <list>
#include <stack>

#include <tool/tool_base.h>
#include <view/view_controls.h>

class TOOLS_HOLDER;
class TOOL_BASE;
class ACTION_MANAGER;
class ACTION_MENU;
class APP_SETTINGS_BASE;


class TOOL_MANAGER
{
private:
    struct TOOL_STATE;

public:
    TOOL_MANAGER();

    ~TOOL_MANAGER();

    // Helper typedefs
    typedef std::map<TOOL_BASE*, TOOL_STATE*> TOOL_STATE_MAP;
    typedef std::map<std::string, TOOL_STATE*> NAME_STATE_MAP;
    typedef std::map<TOOL_ID, TOOL_STATE*> ID_STATE_MAP;
    typedef std::list<TOOL_ID> ID_LIST;
    typedef std::vector<TOOL_BASE*> TOOL_VEC;

    static TOOL_ID MakeToolId( const std::string& aToolName );

    void RegisterTool( TOOL_BASE* aTool );

    bool InvokeTool( TOOL_ID aToolId );

    bool InvokeTool( const std::string& aToolName );

    void ShutdownAllTools();

    void ShutdownTool( TOOL_BASE* aTool );

    void ShutdownTool( TOOL_ID aToolId );

    void ShutdownTool( const std::string& aToolName );

    template<typename T>
    bool RunAction( const std::string& aActionName, bool aNow = false, T aParam = NULL )
    {
        return RunAction( aActionName, aNow, reinterpret_cast<void*>( aParam ) );
    }

    bool RunAction( const std::string& aActionName, bool aNow, void* aParam );

    bool RunAction( const std::string& aActionName, bool aNow = false )
    {
        return RunAction( aActionName, aNow, (void*) NULL );
    }

    template <typename T>
    bool RunAction( const TOOL_ACTION& aAction, bool aNow = false, T aParam = NULL )
    {
        return RunAction( aAction, aNow, reinterpret_cast<void*>( aParam ) );
    }

    bool RunAction( const TOOL_ACTION& aAction, bool aNow, void* aParam );

    bool RunAction( const TOOL_ACTION& aAction, bool aNow = false )
    {
        return RunAction( aAction, aNow, (void*) NULL );
    }

    const std::map<std::string, TOOL_ACTION*>& GetActions() const;

    void CancelTool();

    void PrimeTool( const VECTOR2D& aPosition );

    int GetHotKey( const TOOL_ACTION& aAction ) const;

    ACTION_MANAGER* GetActionManager() const { return m_actionMgr; }

    TOOL_BASE* FindTool( int aId ) const;

    TOOL_BASE* FindTool( const std::string& aName ) const;

    /*
     * Return the tool of given type or nullptr if there is no such tool registered.
     */
    template<typename T>
    T* GetTool()
    {
        std::map<const char*, TOOL_BASE*>::iterator tool = m_toolTypes.find( typeid( T ).name() );

        if( tool != m_toolTypes.end() )
            return static_cast<T*>( tool->second );

        return nullptr;
    }

    void DeactivateTool();


     bool IsToolActive( TOOL_ID aId ) const;


    void ResetTools( TOOL_BASE::RESET_REASON aReason );

    void InitTools();

    bool ProcessEvent( const TOOL_EVENT& aEvent );

    inline void PostEvent( const TOOL_EVENT& aEvent )
    {
        // Horrific hack, but it's a crash bug.  Don't let inter-frame commands stack up
        // waiting to be processed.
        if( aEvent.IsSimulator() && m_eventQueue.size() > 0 && m_eventQueue.back().IsSimulator() )
            m_eventQueue.pop_back();

        m_eventQueue.push_back( aEvent );
    }

    void SetEnvironment( EDA_ITEM* aModel, KIGFX::VIEW* aView,
                         KIGFX::VIEW_CONTROLS* aViewControls, APP_SETTINGS_BASE* aSettings,
                         TOOLS_HOLDER* aFrame );

    /*
     * Accessors for the environment objects (view, model, etc.)
     */
    KIGFX::VIEW* GetView() const { return m_view; }

    KIGFX::VIEW_CONTROLS* GetViewControls() const { return m_viewControls; }

    VECTOR2D GetMousePosition() const;
    VECTOR2D GetCursorPosition() const;

    EDA_ITEM* GetModel() const { return m_model; }

    APP_SETTINGS_BASE* GetSettings() const { return m_settings; }

    TOOLS_HOLDER* GetToolHolder() const { return m_frame; }

    inline int GetCurrentToolId() const
    {
        return m_activeTools.empty() ? -1 : m_activeTools.front();
    }

    inline TOOL_BASE* GetCurrentTool() const
    {
        return FindTool( GetCurrentToolId() );
    }

    TOOL_STATE* GetCurrentToolState() const
    {
        auto it = m_toolIdIndex.find( GetCurrentToolId() );
        return ( it != m_toolIdIndex.end() ) ? it->second : nullptr;
    }

    int GetPriority( int aToolId ) const;

    void ScheduleNextState( TOOL_BASE* aTool, TOOL_STATE_FUNC& aHandler,
                            const TOOL_EVENT_LIST& aConditions );

    void ClearTransitions( TOOL_BASE* aTool );

    void RunMainStack( TOOL_BASE* aTool, std::function<void()> aFunc );

    void UpdateUI( const TOOL_EVENT& aEvent );

    TOOL_EVENT* ScheduleWait( TOOL_BASE* aTool, const TOOL_EVENT_LIST& aConditions );

    void ScheduleContextMenu( TOOL_BASE* aTool, ACTION_MENU* aMenu, CONTEXT_MENU_TRIGGER aTrigger );

    bool SaveClipboard( const std::string& aTextUTF8 );

    std::string GetClipboardUTF8() const;

    const KIGFX::VC_SETTINGS& GetCurrentToolVC() const;

    bool IsContextMenuActive() const
    {
        return m_menuActive;
    }

    void VetoContextMenuMouseWarp()
    {
        m_warpMouseAfterContextMenu = false;
    }

    void DispatchContextMenu( const TOOL_EVENT& aEvent );

    bool DispatchHotKey( const TOOL_EVENT& aEvent );

    VECTOR2D GetMenuCursorPos() const
    {
        return m_menuCursor;
    }

private:
    typedef std::pair<TOOL_EVENT_LIST, TOOL_STATE_FUNC> TRANSITION;

    bool dispatchInternal( TOOL_EVENT& aEvent );

    bool dispatchActivation( const TOOL_EVENT& aEvent );

    bool invokeTool( TOOL_BASE* aTool );

    bool runTool( TOOL_BASE* aTool );

    ID_LIST::iterator finishTool( TOOL_STATE* aState );

    bool isRegistered( TOOL_BASE* aTool ) const
    {
        return m_toolState.count( aTool ) > 0;
    }

    bool isActive( TOOL_BASE* aTool ) const;

    void saveViewControls( TOOL_STATE* aState );

    void applyViewControls( const TOOL_STATE* aState );

    bool processEvent( const TOOL_EVENT& aEvent );

    void setActiveState( TOOL_STATE* aState );

    TOOL_VEC m_toolOrder;

    TOOL_STATE_MAP m_toolState;

    NAME_STATE_MAP m_toolNameIndex;

    ID_STATE_MAP m_toolIdIndex;

    std::map<const char*, TOOL_BASE*> m_toolTypes;

    ID_LIST m_activeTools;

    ACTION_MANAGER* m_actionMgr;

    std::map<TOOL_ID, OPT<VECTOR2D>> m_cursorSettings;

    EDA_ITEM*             m_model;
    KIGFX::VIEW*          m_view;
    KIGFX::VIEW_CONTROLS* m_viewControls;
    TOOLS_HOLDER*         m_frame;
    APP_SETTINGS_BASE*    m_settings;

    std::list<TOOL_EVENT> m_eventQueue;

    VECTOR2D m_menuCursor;

    bool m_warpMouseAfterContextMenu;

    bool m_menuActive;

    TOOL_ID m_menuOwner;

    TOOL_STATE* m_activeState;
};

#endif // __TOOL_MANAGER_H