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/**
* @file llcommandhandler.h
* @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.
*
* $LicenseInfo:firstyear=2007&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#ifndef LLCOMMANDHANDLER_H
#define LLCOMMANDHANDLER_H
#include "llsd.h"
/* Example: secondlife:///app/foo/<uuid>
Command "foo" that takes one parameter, a UUID.
class LLFooHandler : public LLCommandHandler
{
public:
// Inform the system you handle commands starting
// with "foo" and they are only allowed from
// "trusted" (pointed at Linden content) browsers
LLFooHandler() : LLCommandHandler("foo", UNTRUSTED_BLOCK) { }
// Your code here
bool handle(const LLSD& tokens, const LLSD& query_map,
LLMediaCtrl* web)
{
if (tokens.size() < 1) return false;
LLUUID id( tokens[0] );
return do_foo(id);
}
};
// *NOTE: Creating the object registers with the dispatcher.
LLFooHandler gFooHandler;
*/
class LLMediaCtrl;
class LLCommandHandler
{
public:
enum EUntrustedAccess
{
UNTRUSTED_ALLOW, // allow commands from untrusted browsers
UNTRUSTED_BLOCK, // ignore commands from untrusted browsers
UNTRUSTED_CLICK_ONLY, // allow untrusted, but only if clicked
UNTRUSTED_THROTTLE // allow untrusted, but only a few per min.
};
static const std::string NAV_TYPE_CLICKED;
static const std::string NAV_TYPE_EXTERNAL;
static const std::string NAV_TYPE_NAVIGATED;
LLCommandHandler(const char* command, EUntrustedAccess untrusted_access);
// Automatically registers object to get called when
// command is executed. All commands can be processed
// in links from LLMediaCtrl, but some (like teleport)
// should not be allowed from outside the app.
virtual ~LLCommandHandler();
virtual bool canHandleUntrusted(
const LLSD& params,
const LLSD& query_map,
LLMediaCtrl* web,
const std::string& nav_type)
{ return true; }
virtual bool handle(const LLSD& params,
const LLSD& query_map,
LLMediaCtrl* web) = 0;
// For URL secondlife:///app/foo/bar/baz?cat=1&dog=2
// @params - array of "bar", "baz", possibly empty
// @query_map - map of "cat" -> 1, "dog" -> 2, possibly empty
// @web - pointer to web browser control, possibly NULL
// Return true if you did something, false if the parameters
// are invalid or on error.
};
class LLCommandDispatcher
{
public:
static bool dispatch(const std::string& cmd,
const LLSD& params,
const LLSD& query_map,
LLMediaCtrl* web,
const std::string& nav_type,
bool trusted_browser);
// Execute a command registered via the above mechanism,
// passing string parameters.
// Returns true if command was found and executed correctly.
/// Return an LLSD::Map of registered LLCommandHandlers and associated
/// info (e.g. EUntrustedAccess).
static LLSD enumerate();
};
#endif
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