CEGUI::LuaScriptModule Class Reference

Interface for the LuaScriptModule class. More...

Inheritance diagram for CEGUI::LuaScriptModule:

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Collaboration diagram for CEGUI::LuaScriptModule:

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List of all members.

Public Member Functions

 LuaScriptModule ()
 Constructor for LuaScriptModule class which create a lua_State.
 LuaScriptModule (lua_State *state)
 Constructor for LuaScriptModule class which takes a lua_State.
 ~LuaScriptModule ()
 Destructor for LuaScriptModule class.
void executeScriptFile (const String &filename, const String &resourceGroup)
 Execute a script file.
void executeScriptFile (const String &filename, const String &resourceGroup, const String &error_handler)
 Execute a script file.
void executeScriptFile (const String &filename, const String &resourceGroup, const int error_handler)
 Execute a script file.
int executeScriptGlobal (const String &function_name)
 Execute a scripted global function. The function should not take any parameters and should return an integer.
int executeScriptGlobal (const String &function_name, const String &error_handler)
 Execute a scripted global function. The function should not take any parameters and should return an integer.
int executeScriptGlobal (const String &function_name, const int error_handler)
 Execute a scripted global function. The function should not take any parameters and should return an integer.
bool executeScriptedEventHandler (const String &handler_name, const EventArgs &e)
 Execute a scripted global 'event handler' function by looking it up by name.
bool executeScriptedEventHandler (const String &handler_name, const EventArgs &e, const String &error_handler)
 Execute a scripted global 'event handler' function by looking it up by name.
bool executeScriptedEventHandler (const String &handler_name, const EventArgs &e, const int error_handler)
 Execute a scripted global 'event handler' function by looking it up by name.
void executeString (const String &str)
 Execute script code contained in the given CEGUI::String object.
void executeString (const String &str, const String &error_handler)
 Execute script code contained in the given CEGUI::String object.
void executeString (const String &str, const int error_handler)
 Execute script code contained in the given CEGUI::String object.
Event::Connection subscribeEvent (EventSet *target, const String &name, const String &subscriber_name)
 Subscribes the named Event to a scripted funtion.
Event::Connection subscribeEvent (EventSet *target, const String &name, const String &subscriber_name, const String &error_handler)
 Subscribes the named Event to a scripted funtion.
Event::Connection subscribeEvent (EventSet *target, const String &name, const String &subscriber_name, const int error_handler)
 Subscribes the named Event to a scripted funtion.
Event::Connection subscribeEvent (EventSet *target, const String &name, Event::Group group, const String &subscriber_name)
 Subscribes the specified group of the named Event to a scripted funtion.
Event::Connection subscribeEvent (EventSet *target, const String &name, Event::Group group, const String &subscriber_name, const String &error_handler)
 Subscribes the specified group of the named Event to a scripted funtion.
Event::Connection subscribeEvent (EventSet *target, const String &name, Event::Group group, const String &subscriber_name, const int error_handler)
 Subscribes the specified group of the named Event to a scripted funtion.
void createBindings (void)
 Method called during system initialisation, prior to running any scripts via the ScriptModule, to enable the ScriptModule to perform any operations required to complete initialisation or binding of the script language to the gui system objects.
void destroyBindings (void)
 Method called during system destruction, after all scripts have been run via the ScriptModule, to enable the ScriptModule to perform any operations required to cleanup bindings of the script language to the gui system objects, as set-up in the earlier createBindings call.
lua_State * getLuaState (void) const
 Method used to get a pointer to the lua_State that the script module is attached to.
void setDefaultPCallErrorHandler (const String &error_handler_function)
 Set the name of the lua function that will be passed as the error handler in calls to lua_pcall, unless an alternative is specified in some other function call.
void setDefaultPCallErrorHandler (int function_reference)
 Set the function that will be passed as the error handler in calls to lua_pcall, unless an alternative is specified in some other function call.
const StringgetActivePCallErrorHandlerString () const
 Return the function name string of the active error handler function.
int getActivePCallErrorHandlerReference () const
 return the lua registry index of the active error handler function.


Detailed Description

Interface for the LuaScriptModule class.

Constructor & Destructor Documentation

CEGUI::LuaScriptModule::LuaScriptModule ( lua_State *  state  ) 

Constructor for LuaScriptModule class which takes a lua_State.

Parameters:
state Pointer to the lua_State that the script module should attach to.


Member Function Documentation

void CEGUI::LuaScriptModule::createBindings ( void   )  [virtual]

Method called during system initialisation, prior to running any scripts via the ScriptModule, to enable the ScriptModule to perform any operations required to complete initialisation or binding of the script language to the gui system objects.

Returns:
Nothing.

Reimplemented from CEGUI::ScriptModule.

void CEGUI::LuaScriptModule::destroyBindings ( void   )  [virtual]

Method called during system destruction, after all scripts have been run via the ScriptModule, to enable the ScriptModule to perform any operations required to cleanup bindings of the script language to the gui system objects, as set-up in the earlier createBindings call.

Returns:
Nothing.

Reimplemented from CEGUI::ScriptModule.

bool CEGUI::LuaScriptModule::executeScriptedEventHandler ( const String handler_name,
const EventArgs e,
const int  error_handler 
)

Execute a scripted global 'event handler' function by looking it up by name.

Parameters:
handler_name String object holding the name of the scripted handler function. If this string contains dots '.' it will be parsed as tables containing a function field. For example: 'mytable.subtable.func'
e EventArgs based object that should be passed, by any appropriate means, to the scripted function.
error_handler integer value describing a lua registry reference to the function that will be called if an error occurs while executing the handler function. NB: This is the function passed as the error handler to lua_pcall.
Returns:
  • true if the event was handled.
  • false if the event was not handled.

bool CEGUI::LuaScriptModule::executeScriptedEventHandler ( const String handler_name,
const EventArgs e,
const String error_handler 
)

Execute a scripted global 'event handler' function by looking it up by name.

Parameters:
handler_name String object holding the name of the scripted handler function. If this string contains dots '.' it will be parsed as tables containing a function field. For example: 'mytable.subtable.func'
e EventArgs based object that should be passed, by any appropriate means, to the scripted function.
error_handler String containing the name of the script fuction that will be called if an error occurs while executing the handler function. NB: This is the function passed as the error handler to lua_pcall.
Returns:
  • true if the event was handled.
  • false if the event was not handled.

bool CEGUI::LuaScriptModule::executeScriptedEventHandler ( const String handler_name,
const EventArgs e 
) [virtual]

Execute a scripted global 'event handler' function by looking it up by name.

Parameters:
handler_name String object holding the name of the scripted handler function. If this string contains dots '.' it will be parsed as tables containing a function field. For example: 'mytable.subtable.func'
e EventArgs based object that should be passed, by any appropriate means, to the scripted function.
Returns:
  • true if the event was handled.
  • false if the event was not handled.

Implements CEGUI::ScriptModule.

void CEGUI::LuaScriptModule::executeScriptFile ( const String filename,
const String resourceGroup,
const int  error_handler 
)

Execute a script file.

Parameters:
filename String object holding the filename of the script file that is to be executed.
resourceGroup Resource group idendifier to be passed to the ResourceProvider when loading the script file.
error_handler integer value describing a lua registry reference to the function that will be called if an error occurs while executing the handler function. NB: This is the function passed as the error handler to lua_pcall.

void CEGUI::LuaScriptModule::executeScriptFile ( const String filename,
const String resourceGroup,
const String error_handler 
)

Execute a script file.

Parameters:
filename String object holding the filename of the script file that is to be executed.
resourceGroup Resource group idendifier to be passed to the ResourceProvider when loading the script file.
error_handler String containing the name of the script fuction that will be called if an error occurs while executing the handler function. NB: This is the function passed as the error handler to lua_pcall.

void CEGUI::LuaScriptModule::executeScriptFile ( const String filename,
const String resourceGroup 
) [virtual]

Execute a script file.

Parameters:
filename String object holding the filename of the script file that is to be executed.
resourceGroup Resource group idendifier to be passed to the ResourceProvider when loading the script file.

Implements CEGUI::ScriptModule.

int CEGUI::LuaScriptModule::executeScriptGlobal ( const String function_name,
const int  error_handler 
)

Execute a scripted global function. The function should not take any parameters and should return an integer.

Parameters:
function_name String object holding the name of the function, in the global script environment, that is to be executed.
error_handler integer value describing a lua registry reference to the function that will be called if an error occurs while executing the handler function. NB: This is the function passed as the error handler to lua_pcall.
Returns:
The integer value returned from the script function.

int CEGUI::LuaScriptModule::executeScriptGlobal ( const String function_name,
const String error_handler 
)

Execute a scripted global function. The function should not take any parameters and should return an integer.

Parameters:
function_name String object holding the name of the function, in the global script environment, that is to be executed.
error_handler String containing the name of the script fuction that will be called if an error occurs while executing the handler function. NB: This is the function passed as the error handler to lua_pcall.
Returns:
The integer value returned from the script function.

int CEGUI::LuaScriptModule::executeScriptGlobal ( const String function_name  )  [virtual]

Execute a scripted global function. The function should not take any parameters and should return an integer.

Parameters:
function_name String object holding the name of the function, in the global script environment, that is to be executed.
Returns:
The integer value returned from the script function.

Implements CEGUI::ScriptModule.

void CEGUI::LuaScriptModule::executeString ( const String str,
const int  error_handler 
)

Execute script code contained in the given CEGUI::String object.

Parameters:
str String object holding the valid script code that should be executed.
error_handler integer value describing a lua registry reference to the function that will be called if an error occurs while executing the handler function. NB: This is the function passed as the error handler to lua_pcall.
Returns:
Nothing.

void CEGUI::LuaScriptModule::executeString ( const String str,
const String error_handler 
)

Execute script code contained in the given CEGUI::String object.

Parameters:
str String object holding the valid script code that should be executed.
error_handler String containing the name of the script fuction that will be called if an error occurs while executing the handler function. NB: This is the function passed as the error handler to lua_pcall.
Returns:
Nothing.

void CEGUI::LuaScriptModule::executeString ( const String str  )  [virtual]

Execute script code contained in the given CEGUI::String object.

Parameters:
str String object holding the valid script code that should be executed.
Returns:
Nothing.

Implements CEGUI::ScriptModule.

int CEGUI::LuaScriptModule::getActivePCallErrorHandlerReference (  )  const

return the lua registry index of the active error handler function.

The 'active' error handler for the LuaScriptModule is either the default as specified by calling setDefaultPCallErrorHandler, or whatever might have been set up by a call to the internal initErrorHandlerFunc function.

This may return a value previously set by the user, or the value as
bound internally by the script module for an error handler specified by function name.
Note:
This function is really intended for use internally by other parts of the lua scripting support. Although it could be useful elsewhere for advanced uses, so long as you're careful!
Warning:
You should never call luaL_unref on the value returned by this function unless you created tge reference in the first place, and even then only after having called setDefaultPCallErrorHandler passing LUA_NOREF.

References CEGUI::String::empty().

Referenced by subscribeEvent().

const String & CEGUI::LuaScriptModule::getActivePCallErrorHandlerString (  )  const

Return the function name string of the active error handler function.

The 'active' error handler for the LuaScriptModule is either the default as specified by calling setDefaultPCallErrorHandler, or whatever might have been set up by a call to the internal initErrorHandlerFunc function.

Note:
This function is really intended for use internally by other parts of the lua scripting support. Although it could be useful elsewhere for advanced uses, so long as you're careful!

References CEGUI::String::empty().

Referenced by subscribeEvent().

lua_State* CEGUI::LuaScriptModule::getLuaState ( void   )  const [inline]

Method used to get a pointer to the lua_State that the script module is attached to.

Returns:
A pointer to the lua_State that the script module is attached to.

void CEGUI::LuaScriptModule::setDefaultPCallErrorHandler ( int  function_reference  ) 

Set the function that will be passed as the error handler in calls to lua_pcall, unless an alternative is specified in some other function call.

Parameters:
function_reference Lua function registry index of the function to be called.

References CEGUI::String::clear().

void CEGUI::LuaScriptModule::setDefaultPCallErrorHandler ( const String error_handler_function  ) 

Set the name of the lua function that will be passed as the error handler in calls to lua_pcall, unless an alternative is specified in some other function call.

Parameters:
error_handler_function Name of the lua function to be called. This is looked up / bound on first usage.

Event::Connection CEGUI::LuaScriptModule::subscribeEvent ( EventSet target,
const String name,
Event::Group  group,
const String subscriber_name,
const int  error_handler 
)

Subscribes the specified group of the named Event to a scripted funtion.

Parameters:
target The target EventSet for the subscription.
name String object containing the name of the Event to subscribe to.
group Group which is to be subscribed to. Subscription groups are called in ascending order.
subscriber_name String object containing the name of the script funtion that is to be subscribed to the Event.
error_handler integer value describing a lua registry reference to the function that will be called if an error occurs while executing the handler function. NB: This is the function passed as the error handler to lua_pcall.
Returns:
Connection object that can be used to check the status of the Event connection and to disconnect (unsubscribe) from the Event.

References CEGUI::LuaFunctor::d_errFuncIndex, CEGUI::LuaFunctor::index, and CEGUI::EventSet::subscribeEvent().

Event::Connection CEGUI::LuaScriptModule::subscribeEvent ( EventSet target,
const String name,
Event::Group  group,
const String subscriber_name,
const String error_handler 
)

Subscribes the specified group of the named Event to a scripted funtion.

Parameters:
target The target EventSet for the subscription.
name String object containing the name of the Event to subscribe to.
group Group which is to be subscribed to. Subscription groups are called in ascending order.
subscriber_name String object containing the name of the script funtion that is to be subscribed to the Event.
error_handler String containing the name of the script fuction that will be called if an error occurs while executing the handler function. NB: This is the function passed as the error handler to lua_pcall.
Returns:
Connection object that can be used to check the status of the Event connection and to disconnect (unsubscribe) from the Event.

References CEGUI::LuaFunctor::d_errFuncIndex, CEGUI::LuaFunctor::index, and CEGUI::EventSet::subscribeEvent().

Event::Connection CEGUI::LuaScriptModule::subscribeEvent ( EventSet target,
const String name,
Event::Group  group,
const String subscriber_name 
) [virtual]

Subscribes the specified group of the named Event to a scripted funtion.

Parameters:
target The target EventSet for the subscription.
name String object containing the name of the Event to subscribe to.
group Group which is to be subscribed to. Subscription groups are called in ascending order.
subscriber_name String object containing the name of the script funtion that is to be subscribed to the Event.
Returns:
Connection object that can be used to check the status of the Event connection and to disconnect (unsubscribe) from the Event.

Implements CEGUI::ScriptModule.

References CEGUI::LuaFunctor::d_errFuncIndex, getActivePCallErrorHandlerReference(), getActivePCallErrorHandlerString(), CEGUI::LuaFunctor::index, and CEGUI::EventSet::subscribeEvent().

Event::Connection CEGUI::LuaScriptModule::subscribeEvent ( EventSet target,
const String name,
const String subscriber_name,
const int  error_handler 
)

Subscribes the named Event to a scripted funtion.

Parameters:
target The target EventSet for the subscription.
name String object containing the name of the Event to subscribe to.
subscriber_name String object containing the name of the script funtion that is to be subscribed to the Event.
error_handler integer value describing a lua registry reference to the function that will be called if an error occurs while executing the handler function. NB: This is the function passed as the error handler to lua_pcall.
Returns:
Connection object that can be used to check the status of the Event connection and to disconnect (unsubscribe) from the Event.

References CEGUI::LuaFunctor::d_errFuncIndex, CEGUI::LuaFunctor::index, and CEGUI::EventSet::subscribeEvent().

Event::Connection CEGUI::LuaScriptModule::subscribeEvent ( EventSet target,
const String name,
const String subscriber_name,
const String error_handler 
)

Subscribes the named Event to a scripted funtion.

Parameters:
target The target EventSet for the subscription.
name String object containing the name of the Event to subscribe to.
subscriber_name String object containing the name of the script funtion that is to be subscribed to the Event.
error_handler String containing the name of the script fuction that will be called if an error occurs while executing the handler function. NB: This is the function passed as the error handler to lua_pcall.
Returns:
Connection object that can be used to check the status of the Event connection and to disconnect (unsubscribe) from the Event.

References CEGUI::LuaFunctor::d_errFuncIndex, CEGUI::LuaFunctor::index, and CEGUI::EventSet::subscribeEvent().

Event::Connection CEGUI::LuaScriptModule::subscribeEvent ( EventSet target,
const String name,
const String subscriber_name 
) [virtual]

Subscribes the named Event to a scripted funtion.

Parameters:
target The target EventSet for the subscription.
name String object containing the name of the Event to subscribe to.
subscriber_name String object containing the name of the script funtion that is to be subscribed to the Event.
Returns:
Connection object that can be used to check the status of the Event connection and to disconnect (unsubscribe) from the Event.

Implements CEGUI::ScriptModule.

References CEGUI::LuaFunctor::d_errFuncIndex, getActivePCallErrorHandlerReference(), getActivePCallErrorHandlerString(), CEGUI::LuaFunctor::index, and CEGUI::EventSet::subscribeEvent().


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