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/**
* @file llcommandhandler.cpp
* @brief Central registry for text-driven "commands", most of
* which manipulate user interface. For example, the command
* "agent (uuid) about" will open the UI for an avatar's profile.
*
* Copyright (c) 2007-$CurrentYear$, Linden Research, Inc.
* $License$
*/
#include "llviewerprecompiledheaders.h"
#include "llcommandhandler.h"
// system includes
#include <boost/tokenizer.hpp>
//---------------------------------------------------------------------------
// Underlying registry for command handlers, not directly accessible.
//---------------------------------------------------------------------------
class LLCommandHandlerRegistry
{
public:
static LLCommandHandlerRegistry& instance();
void add(const char* cmd, LLCommandHandler* handler);
bool dispatch(const std::string& cmd, const std::vector<std::string>& params);
private:
std::map<std::string, LLCommandHandler*> mMap;
};
// static
LLCommandHandlerRegistry& LLCommandHandlerRegistry::instance()
{
// Force this to be initialized on first call, because we're going
// to be adding items to the std::map before main() and we can't
// rely on a global being initialized in the right order.
static LLCommandHandlerRegistry instance;
return instance;
}
void LLCommandHandlerRegistry::add(const char* cmd, LLCommandHandler* handler)
{
mMap[cmd] = handler;
}
bool LLCommandHandlerRegistry::dispatch(const std::string& cmd,
const std::vector<std::string>& params)
{
std::map<std::string, LLCommandHandler*>::iterator it = mMap.find(cmd);
if (it == mMap.end()) return false;
LLCommandHandler* handler = it->second;
if (!handler) return false;
return handler->handle(params);
}
//---------------------------------------------------------------------------
// Automatic registration of commands, runs before main()
//---------------------------------------------------------------------------
LLCommandHandler::LLCommandHandler(const char* cmd)
{
LLCommandHandlerRegistry::instance().add(cmd, this);
}
LLCommandHandler::~LLCommandHandler()
{
// Don't care about unregistering these, all the handlers
// should be static objects.
}
//---------------------------------------------------------------------------
// Public interface
//---------------------------------------------------------------------------
// static
bool LLCommandDispatcher::dispatch(const std::string& cmd, const std::vector<std::string>& params)
{
return LLCommandHandlerRegistry::instance().dispatch(cmd, params);
}
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