kicad/include/tool/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
* @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 <map>
#include <deque>
#include <math/vector2d.h>
#include <tool/tool_base.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
{
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public:
TOOL_MANAGER();
~TOOL_MANAGER();
/**
* Generates an 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.
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*
* @param aToolId is the ID number of the requested tool.
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* @return True if the requested tool was invoked successfully.
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*/
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bool InvokeTool( TOOL_ID aToolId );
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/**
* 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 );
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/**
* Function FindTool()
* Searches for a tool with given ID.
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*
* @param aId is the ID number of the requested tool.
* @return Pointer to the requested tool or NULL in case of failure.
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*/
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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.
*/
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TOOL_BASE* FindTool( const std::string& aName ) const;
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/**
* Resets the state of a given tool by clearing its wait and
* transition lists and calling tool's internal Reset() method.
*/
void ResetTool( TOOL_BASE* aTool );
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/**
* Takes an event from the TOOL_DISPATCHER and propagates it to
* tools that requested events of matching type(s)
*/
bool ProcessEvent( TOOL_EVENT& 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)
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* when the board is set up.
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*/
void SetEnvironment( EDA_ITEM* aModel, KIGFX::VIEW* aView,
KIGFX::VIEW_CONTROLS* aViewControls, wxWindow* aFrame );
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/* Accessors for the environment objects (view, model, etc.) */
KIGFX::VIEW* GetView() const
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{
return m_view;
}
KIGFX::VIEW_CONTROLS* GetViewControls() const
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{
return m_viewControls;
}
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EDA_ITEM* GetModel() const
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{
return m_model;
}
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wxWindow* GetEditFrame() const
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{
return m_editFrame;
}
/**
* 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 );
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/**
* 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 );
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/**
* Sets behaviour of the tool's context popup menu.
* @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 );
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/**
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* Allows a tool to pass the already handled event to the next tool on the stack.
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*/
void PassEvent()
{
m_passEvent = true;
}
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private:
struct TOOL_STATE;
typedef std::pair<TOOL_EVENT_LIST, TOOL_STATE_FUNC> TRANSITION;
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void dispatchInternal( TOOL_EVENT& aEvent );
/**
* Function dispatchStandardEvents()
* Handles specific events, that are intended for TOOL_MANAGER rather than tools.
* @aEvent is the event to be processed.
* @return False if the event was processed and should not go any further.
*/
bool dispatchStandardEvents( 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( 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 aToolId 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 aToolId 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.
*/
void finishTool( TOOL_STATE* aState );
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/**
* 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 );
/// Index of registered tools current states, associated by tools' objects.
std::map<TOOL_BASE*, TOOL_STATE*> m_toolState;
/// Index of the registered tools current states, associated by tools' names.
std::map<std::string, TOOL_STATE*> m_toolNameIndex;
/// Index of the registered tools current states, associated by tools' ID numbers.
std::map<TOOL_ID, TOOL_STATE*> m_toolIdIndex;
/// Stack of the active tools
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std::deque<TOOL_ID> m_activeTools;
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/// Instance of ACTION_MANAGER that handles TOOL_ACTIONs
ACTION_MANAGER* m_actionMgr;
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EDA_ITEM* m_model;
KIGFX::VIEW* m_view;
KIGFX::VIEW_CONTROLS* m_viewControls;
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wxWindow* m_editFrame;
/// Flag saying if the currently processed event should be passed to other tools.
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bool m_passEvent;
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/// Pointer to the tool on the top of the active tools stack.
TOOL_STATE* m_currentTool;
};
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#endif