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/**
* @file lluilistener.cpp
* @author Nat Goodspeed
* @date 2009-08-18
* @brief Implementation for lluilistener.
*
* $LicenseInfo:firstyear=2009&license=viewerlgpl$
* 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
* $/LicenseInfo$
*/
// Precompiled header
#include "llviewerprecompiledheaders.h"
// associated header
#include "lluilistener.h"
// STL headers
// std headers
// external library headers
// other Linden headers
#include "llui.h" // getRootView(), resolvePath()
#include "lluictrl.h"
#include "llerror.h"
LLUIListener::LLUIListener():
LLEventAPI("UI",
"LLUICtrl::CommitCallbackRegistry listener.\n"
"Capable of invoking any function (with parameter) you can specify in XUI.")
{
add("call",
"Invoke the operation named by [\"function\"], passing [\"parameter\"],\n"
"as if from a user gesture on a menu -- or a button click.",
&LLUIListener::call,
LLSD().with("function", LLSD()));
add("getValue",
"For the UI control identified by the path in [\"path\"], return the control's\n"
"current value as [\"value\"] reply.",
&LLUIListener::getValue,
LLSDMap("path", LLSD())("reply", LLSD()));
}
void LLUIListener::call(const LLSD& event) const
{
LLUICtrl::commit_callback_t* func =
LLUICtrl::CommitCallbackRegistry::getValue(event["function"]);
if (! func)
{
// This API is intended for use by a script. It's a fire-and-forget
// API: we provide no reply. Therefore, a typo in the script will
// provide no feedback whatsoever to that script. To rub the coder's
// nose in such an error, crump rather than quietly ignoring it.
LL_ERRS("LLUIListener") << "function '" << event["function"] << "' not found" << LL_ENDL;
}
else
{
// Interestingly, view_listener_t::addMenu() (addCommit(),
// addEnable()) constructs a commit_callback_t callable that accepts
// two parameters but discards the first. Only the second is passed to
// handleEvent(). Therefore we feel completely safe passing NULL for
// the first parameter.
(*func)(NULL, event["parameter"]);
}
}
void LLUIListener::getValue(const LLSD&event) const
{
LLSD reply = LLSD::emptyMap();
const LLView* root = LLUI::getInstance()->getRootView();
const LLView* view = LLUI::getInstance()->resolvePath(root, event["path"].asString());
const LLUICtrl* ctrl(dynamic_cast<const LLUICtrl*>(view));
if (ctrl)
{
reply["value"] = ctrl->getValue();
}
else
{
// *TODO: ??? return something indicating failure to resolve
}
sendReply(reply, event);
}
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