kicad/include/tool/tool_manager.h

522 lines
16 KiB
C++

/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2013 CERN
* @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 TOOL_BASE;
class ACTION_MANAGER;
class CONTEXT_MENU;
class wxWindow;
/**
* Class TOOL_MANAGER.
* Master controller class:
* - registers editing tools
* - pumps UI events to tools requesting them
* - manages tool state machines (transitions and wait requests)
*/
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;
/**
* Generates a unique ID from for a tool with given name.
*/
static TOOL_ID MakeToolId( const std::string& aToolName );
/**
* Function RegisterTool()
* Adds a tool to the manager set and sets it up. Called once for
* each tool during application initialization.
* @param aTool: tool to be added. Ownership is transferred.
*/
void RegisterTool( TOOL_BASE* aTool );
/**
* Function InvokeTool()
* Calls a tool by sending a tool activation event to tool of given ID.
*
* @param aToolId is the ID number of the requested tool.
* @return True if the requested tool was invoked successfully.
*/
bool InvokeTool( TOOL_ID aToolId );
/**
* Function InvokeTool()
* Calls a tool by sending a tool activation event to tool of given name.
*
* @param aToolName is the name of the requested tool.
* @return True if the requested tool was invoked successfully.
*/
bool InvokeTool( const std::string& aToolName );
/**
* Function RegisterAction()
* Registers an action that can be used to control tools (eg. invoke, trigger specific
* behaviours).
*
* @param aAction is the action to be registered.
*/
void RegisterAction( TOOL_ACTION* aAction );
/**
* Function UnregisterAction()
* Unregisters an action, so it is no longer active.
*
* @param aAction is the action to be unregistered.
*/
void UnregisterAction( TOOL_ACTION* aAction );
/**
* Function RunAction()
* Runs the specified action. The common format for action names is "application.ToolName.Action".
*
* @param aActionName is the name of action to be invoked.
* @param aNow decides if the action has to be run immediately or after the current coroutine
* is preemptied.
* @param aParam is an optional parameter that might be used by the invoked action. Its meaning
* depends on the action.
* @return False if the action was not found.
*/
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 );
}
/**
* Function RunAction()
* Runs the specified action.
*
* @param aAction is the action to be invoked.
* @param aNow decides if the action has to be run immediately or after the current coroutine
* is preemptied.
* @param aParam is an optional parameter that might be used by the invoked action. Its meaning
* depends on the action.
*/
template<typename T>
void RunAction( const TOOL_ACTION& aAction, bool aNow = false, T aParam = NULL )
{
RunAction( aAction, aNow, reinterpret_cast<void*>( aParam ) );
}
void RunAction( const TOOL_ACTION& aAction, bool aNow, void* aParam );
void RunAction( const TOOL_ACTION& aAction, bool aNow = false )
{
RunAction( aAction, aNow, (void*) NULL );
}
///> @copydoc ACTION_MANAGER::GetHotKey()
int GetHotKey( const TOOL_ACTION& aAction );
///> @copydoc ACTION_MANAGER::UpdateHotKeys()
void UpdateHotKeys();
/**
* Function FindTool()
* Searches for a tool with given ID.
*
* @param aId is the ID number of the requested tool.
* @return Pointer to the requested tool or NULL in case of failure.
*/
TOOL_BASE* FindTool( int aId ) const;
/**
* Function FindTool()
* Searches for a tool with given name.
*
* @param aName is the name of the requested tool.
* @return Pointer to the requested tool or NULL in case of failure.
*/
TOOL_BASE* FindTool( const std::string& aName ) const;
/*
* Function GetTool()
* Returns the tool of given type or NULL 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 NULL;
}
/**
* Function DeactivateTool()
* Deactivates the currently active tool.
*/
void DeactivateTool();
/**
* Function ResetTools()
* Resets all tools (i.e. calls their Reset() method).
*/
void ResetTools( TOOL_BASE::RESET_REASON aReason );
/**
* Function InitTools()
* Initializes all registered tools. If a tool fails during the initialization, it is
* deactivated and becomes unavailable for further use. Initialization should be done
* only once.
*/
void InitTools();
/**
* Propagates an event to tools that requested events of matching type(s).
* @param aEvent is the event to be processed.
*/
void ProcessEvent( const TOOL_EVENT& aEvent );
/**
* Puts an event to the event queue to be processed at the end of event processing cycle.
* @param aEvent is the event to be put into the queue.
*/
inline void PostEvent( const TOOL_EVENT& aEvent )
{
m_eventQueue.push_back( aEvent );
}
/**
* Sets the work environment (model, view, view controls and the parent window).
* These are made available to the tool. Called by the parent frame (PCB_EDIT_FRAME)
* when the board is set up.
*/
void SetEnvironment( EDA_ITEM* aModel, KIGFX::VIEW* aView,
KIGFX::VIEW_CONTROLS* aViewControls, wxWindow* aFrame );
/* Accessors for the environment objects (view, model, etc.) */
KIGFX::VIEW* GetView() const
{
return m_view;
}
inline KIGFX::VIEW_CONTROLS* GetViewControls() const
{
return m_viewControls;
}
inline EDA_ITEM* GetModel() const
{
return m_model;
}
inline wxWindow* GetEditFrame() const
{
return m_editFrame;
}
/**
* Returns id of the tool that is on the top of the active tools stack
* (was invoked the most recently).
* @return Id of the currently used tool.
*/
inline int GetCurrentToolId() const
{
return m_activeTools.empty() ? -1 : m_activeTools.front();
}
/**
* Returns the tool that is on the top of the active tools stack
* (was invoked the most recently).
* @return Pointer to the currently used tool.
*/
inline TOOL_BASE* GetCurrentTool() const
{
return FindTool( GetCurrentToolId() );
}
/**
* Returns the TOOL_STATE object representing the state of the active tool. If there are no
* tools active, it returns nullptr.
*/
TOOL_STATE* GetCurrentToolState() const
{
auto it = m_toolIdIndex.find( GetCurrentToolId() );
return ( it != m_toolIdIndex.end() ) ? it->second : nullptr;
}
/**
* Returns priority of a given tool. Higher number means that the tool is closer to the
* beginning of the active tools queue (i.e. receives events earlier, tools with lower
* priority receive events later).
* @param aToolId is the id of queried tool.
* @return The priority of a given tool. If returned number is negative, then it means that
* the tool id is invalid or the tool is not active.
*/
int GetPriority( int aToolId ) const;
/**
* Defines a state transition - the events that cause a given handler method in the tool
* to be called. Called by TOOL_INTERACTIVE::Go(). May be called from a coroutine context.
*/
void ScheduleNextState( TOOL_BASE* aTool, TOOL_STATE_FUNC& aHandler,
const TOOL_EVENT_LIST& aConditions );
void RunMainStack( TOOL_BASE* aTool, std::function<void()> aFunc );
/**
* Pauses execution of a given tool until one or more events matching aConditions arrives.
* The pause/resume operation is done through COROUTINE object.
* Called only from coroutines.
*/
boost::optional<TOOL_EVENT> ScheduleWait( TOOL_BASE* aTool,
const TOOL_EVENT_LIST& aConditions );
/**
* Sets behaviour of the tool's context popup menu.
* @param aTool - the parent tool
* @param aMenu - the menu structure, defined by the tool
* @param aTrigger - when the menu is activated:
* CMENU_NOW: opens the menu right now
* CMENU_BUTTON: opens the menu when RMB is pressed
* CMENU_OFF: menu is disabled.
* May be called from a coroutine context.
*/
void ScheduleContextMenu( TOOL_BASE* aTool, CONTEXT_MENU* aMenu,
CONTEXT_MENU_TRIGGER aTrigger );
/**
* Allows a tool to pass the already handled event to the next tool on the stack.
*/
void PassEvent()
{
m_passEvent = true;
}
/**
* Stores an information to the system clipboard.
* @param aText is the information to be stored.
* @return False if error occured.
*/
bool SaveClipboard( const std::string& aText );
/**
* Returns the information currently stored in the system clipboard. If data stored in the
* clipboard is in non-text format, empty string is returned.
*/
std::string GetClipboard() const;
private:
typedef std::pair<TOOL_EVENT_LIST, TOOL_STATE_FUNC> TRANSITION;
/**
* Function dispatchInternal
* Passes an event at first to the active tools, then to all others.
*/
void dispatchInternal( const TOOL_EVENT& aEvent );
/**
* Function dispatchStandardEvents()
* Handles specific events, that are intended for TOOL_MANAGER rather than tools.
* @param aEvent is the event to be processed.
* @return False if the event was processed and should not go any further.
*/
bool dispatchStandardEvents( const TOOL_EVENT& aEvent );
/**
* Function dispatchActivation()
* Checks if it is a valid activation event and invokes a proper tool.
* @param aEvent is an event to be tested.
* @return True if a tool was invoked, false otherwise.
*/
bool dispatchActivation( const TOOL_EVENT& aEvent );
/**
* Function dispatchContextMenu()
* Handles context menu related events.
*/
void dispatchContextMenu( const TOOL_EVENT& aEvent );
/**
* Function invokeTool()
* Invokes a tool by sending a proper event (in contrary to runTool, which makes the tool run
* for real).
* @param aTool is the tool to be invoked.
*/
bool invokeTool( TOOL_BASE* aTool );
/**
* Function runTool()
* Makes a tool active, so it can receive events and react to them. Activated tool is pushed
* on the active tools stack, so the last activated tool receives events first.
*
* @param aToolId is the ID number of tool to be run.
*/
bool runTool( TOOL_ID aToolId );
/**
* Function runTool()
* Makes a tool active, so it can receive events and react to them. Activated tool is pushed
* on the active tools stack, so the last activated tool receives events first.
*
* @param aName is the name of tool to be run.
*/
bool runTool( const std::string& aName );
/**
* Function runTool()
* Makes a tool active, so it can receive events and react to them. Activated tool is pushed
* on the active tools stack, so the last activated tool receives events first.
*
* @param aTool is the tool to be run.
*/
bool runTool( TOOL_BASE* aTool );
template <class Parameters>
void invokeTool( const std::string& aName, const Parameters& aToolParams );
/**
* Function finishTool()
* Deactivates a tool and does the necessary clean up.
*
* @param aState is the state variable of the tool to be stopped.
* @return m_activeTools iterator. If the tool has been completely deactivated, it points
* to the next active tool on the list. Otherwise it is an iterator pointing to aState.
*/
ID_LIST::iterator finishTool( TOOL_STATE* aState );
/**
* Function isRegistered()
* Returns information about a tool registration status.
*
* @param aTool is the tool to be checked.
* @return true if the tool is in the registered tools list, false otherwise.
*/
bool isRegistered( TOOL_BASE* aTool ) const
{
return m_toolState.count( aTool ) > 0;
}
/**
* Function isActive()
* Returns information about a tool activation status.
*
* @param aTool is the tool to be checked.
* @return True if the tool is on the active tools stack, false otherwise.
*/
bool isActive( TOOL_BASE* aTool );
/**
* Function saveViewControls()
* Saves the VIEW_CONTROLS settings to the tool state object. If VIEW_CONTROLS
* settings are affected by TOOL_MANAGER, the original settings are saved.
*/
void saveViewControls( TOOL_STATE* aState );
/**
* Function applyViewControls()
* Applies VIEW_CONTROLS settings stored in a TOOL_STATE object.
*/
void applyViewControls( TOOL_STATE* aState );
/**
* Function pushViewControls()
* Stores the current VIEW_CONTROLS settings on the stack.
*/
void pushViewControls();
/**
* Function pushViewControls()
* Restores VIEW_CONTROLS settings from the stack.
*/
void popViewControls();
///> Main function for event processing.
void processEvent( const TOOL_EVENT& aEvent );
/// Index of registered tools current states, associated by tools' objects.
TOOL_STATE_MAP m_toolState;
/// Index of the registered tools current states, associated by tools' names.
NAME_STATE_MAP m_toolNameIndex;
/// Index of the registered tools current states, associated by tools' ID numbers.
ID_STATE_MAP m_toolIdIndex;
/// Index of the registered tools to easily lookup by their type.
std::map<const char*, TOOL_BASE*> m_toolTypes;
/// Stack of the active tools
ID_LIST m_activeTools;
/// Instance of ACTION_MANAGER that handles TOOL_ACTIONs
ACTION_MANAGER* m_actionMgr;
/// Original cursor position, if overridden by the context menu handler
boost::optional<VECTOR2D> m_origCursor;
EDA_ITEM* m_model;
KIGFX::VIEW* m_view;
KIGFX::VIEW_CONTROLS* m_viewControls;
wxWindow* m_editFrame;
/// Queue that stores events to be processed at the end of the event processing cycle.
std::list<TOOL_EVENT> m_eventQueue;
///> VIEW_CONTROLS settings stack
std::stack<KIGFX::VC_SETTINGS> m_vcStack;
/// Flag saying if the currently processed event should be passed to other tools.
bool m_passEvent;
/// Flag indicating whether a context menu is currently displayed
bool m_menuActive;
};
#endif