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/**
* @file llviewerhelp.cpp
* @brief Utility functions for the Help system
* @author Tofu Linden
*
* $LicenseInfo:firstyear=2009&license=viewerlgpl$
* 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
* $/LicenseInfo$
*/
#include "llviewerprecompiledheaders.h"
#include "llcommandhandler.h"
#include "llfloaterhelpbrowser.h"
#include "llfloaterreg.h"
#include "llfocusmgr.h"
#include "llviewercontrol.h"
#include "llappviewer.h"
#include "lllogininstance.h"
#include "llviewerhelputil.h"
#include "llviewerhelp.h"
// support for secondlife:///app/help/{TOPIC} SLapps
class LLHelpHandler : public LLCommandHandler
{
public:
// requests will be throttled from a non-trusted browser
LLHelpHandler() : LLCommandHandler("help", UNTRUSTED_THROTTLE) {}
bool handle(const LLSD& params, const LLSD& query_map, LLMediaCtrl* web)
{
LLViewerHelp* vhelp = LLViewerHelp::getInstance();
if (! vhelp)
{
return false;
}
// get the requested help topic name, or use the fallback if none
std::string help_topic = vhelp->defaultTopic();
if (params.size() >= 1)
{
help_topic = params[0].asString();
}
vhelp->showTopic(help_topic);
return true;
}
};
LLHelpHandler gHelpHandler;
//////////////////////////////
// implement LLHelp interface
void LLViewerHelp::showTopic(const std::string &topic)
{
// allow overriding the help server with a local help file
if( gSavedSettings.getBOOL("HelpUseLocal") )
{
showHelp();
LLFloaterHelpBrowser* helpbrowser = dynamic_cast<LLFloaterHelpBrowser*>(LLFloaterReg::getInstance("help_browser"));
helpbrowser->navigateToLocalPage( "help-offline" , "index.html" );
return;
}
// if the help topic is empty, use the default topic
std::string help_topic = topic;
if (help_topic.empty())
{
help_topic = defaultTopic();
}
// f1 help topic means: if the user is not logged in yet, show
// the pre-login topic instead of the default fallback topic,
// otherwise show help for the focused item
if (help_topic == f1HelpTopic())
{
help_topic = getTopicFromFocus();
if (help_topic == defaultTopic() && ! LLLoginInstance::getInstance()->authSuccess())
{
help_topic = preLoginTopic();
}
}
// work out the URL for this topic and display it
showHelp();
std::string helpURL = LLViewerHelpUtil::buildHelpURL( help_topic );
setRawURL(helpURL);
}
std::string LLViewerHelp::defaultTopic()
{
// *hack: to be done properly
return "this_is_fallbacktopic";
}
std::string LLViewerHelp::preLoginTopic()
{
// *hack: to be done properly
return "pre_login_help";
}
std::string LLViewerHelp::f1HelpTopic()
{
// *hack: to be done properly
return "f1_help";
}
//////////////////////////////
// our own interfaces
std::string LLViewerHelp::getTopicFromFocus()
{
// use UI element with viewer's keyboard focus as basis for searching
LLUICtrl* focused = dynamic_cast<LLUICtrl*>(gFocusMgr.getKeyboardFocus());
if (focused)
{
std::string topic;
if (focused->findHelpTopic(topic))
{
return topic;
}
}
// didn't find a help topic in the UI hierarchy for focused
// element, return the fallback topic name instead.
return defaultTopic();
}
// static
void LLViewerHelp::showHelp()
{
LLFloaterHelpBrowser* helpbrowser = dynamic_cast<LLFloaterHelpBrowser*>(LLFloaterReg::getInstance("help_browser"));
if (helpbrowser)
{
BOOL visible = TRUE;
BOOL take_focus = TRUE;
helpbrowser->setVisible(visible);
helpbrowser->setFrontmost(take_focus);
}
else
{
llwarns << "Eep, help_browser floater not found" << llendl;
}
}
// static
void LLViewerHelp::setRawURL(std::string url)
{
LLFloaterHelpBrowser* helpbrowser = dynamic_cast<LLFloaterHelpBrowser*>(LLFloaterReg::getInstance("help_browser"));
if (helpbrowser)
{
helpbrowser->openMedia(url);
}
else
{
llwarns << "Eep, help_browser floater not found" << llendl;
}
}
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