124 lines
4.4 KiB
C++
124 lines
4.4 KiB
C++
/**
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* @file llcommandhandler.cpp
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* @brief Central registry for text-driven "commands", most of
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* which manipulate user interface. For example, the command
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* "agent (uuid) about" will open the UI for an avatar's profile.
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*
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* $LicenseInfo:firstyear=2007&license=viewergpl$
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*
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* Copyright (c) 2007, Linden Research, Inc.
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*
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* Second Life Viewer Source Code
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* The source code in this file ("Source Code") is provided by Linden Lab
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* to you under the terms of the GNU General Public License, version 2.0
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* ("GPL"), unless you have obtained a separate licensing agreement
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* ("Other License"), formally executed by you and Linden Lab. Terms of
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* the GPL can be found in doc/GPL-license.txt in this distribution, or
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* online at http://secondlife.com/developers/opensource/gplv2
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*
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* There are special exceptions to the terms and conditions of the GPL as
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* it is applied to this Source Code. View the full text of the exception
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* in the file doc/FLOSS-exception.txt in this software distribution, or
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* online at http://secondlife.com/developers/opensource/flossexception
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*
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* By copying, modifying or distributing this software, you acknowledge
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* that you have read and understood your obligations described above,
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* and agree to abide by those obligations.
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*
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* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
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* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
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* COMPLETENESS OR PERFORMANCE.
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* $/LicenseInfo$
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*/
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#include "llviewerprecompiledheaders.h"
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#include "llcommandhandler.h"
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// system includes
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#include <boost/tokenizer.hpp>
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//---------------------------------------------------------------------------
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// Underlying registry for command handlers, not directly accessible.
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//---------------------------------------------------------------------------
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struct LLCommandHandlerInfo
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{
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bool mAllowFromExternalBrowser;
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LLCommandHandler* mHandler; // safe, all of these are static objects
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};
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class LLCommandHandlerRegistry
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{
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public:
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static LLCommandHandlerRegistry& instance();
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void add(const char* cmd, bool allow_from_external_browser, LLCommandHandler* handler);
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bool dispatch(const std::string& cmd, bool from_external_browser, const LLSD& params, const LLSD& queryMap);
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private:
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std::map<std::string, LLCommandHandlerInfo> mMap;
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};
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// static
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LLCommandHandlerRegistry& LLCommandHandlerRegistry::instance()
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{
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// Force this to be initialized on first call, because we're going
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// to be adding items to the std::map before main() and we can't
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// rely on a global being initialized in the right order.
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static LLCommandHandlerRegistry instance;
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return instance;
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}
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void LLCommandHandlerRegistry::add(const char* cmd, bool allow_from_external_browser, LLCommandHandler* handler)
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{
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LLCommandHandlerInfo info;
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info.mAllowFromExternalBrowser = allow_from_external_browser;
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info.mHandler = handler;
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mMap[cmd] = info;
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}
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bool LLCommandHandlerRegistry::dispatch(const std::string& cmd,
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bool from_external_browser,
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const LLSD& params,
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const LLSD& queryMap)
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{
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std::map<std::string, LLCommandHandlerInfo>::iterator it = mMap.find(cmd);
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if (it == mMap.end()) return false;
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const LLCommandHandlerInfo& info = it->second;
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if (from_external_browser && !info.mAllowFromExternalBrowser)
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{
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// block request from external browser, but report as
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// "handled" because it was well formatted.
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return true;
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}
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if (!info.mHandler) return false;
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return info.mHandler->handle(params, queryMap);
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}
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//---------------------------------------------------------------------------
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// Automatic registration of commands, runs before main()
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//---------------------------------------------------------------------------
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LLCommandHandler::LLCommandHandler(const char* cmd, bool allow_from_external_browser)
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{
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LLCommandHandlerRegistry::instance().add(cmd, allow_from_external_browser, this);
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}
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LLCommandHandler::~LLCommandHandler()
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{
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// Don't care about unregistering these, all the handlers
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// should be static objects.
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}
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//---------------------------------------------------------------------------
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// Public interface
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//---------------------------------------------------------------------------
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// static
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bool LLCommandDispatcher::dispatch(const std::string& cmd,
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bool from_external_browser,
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const LLSD& params, const LLSD& queryMap)
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{
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return LLCommandHandlerRegistry::instance().dispatch(
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cmd, from_external_browser, params, queryMap);
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}
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