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/** \file PluginLoader.h
\brief Define the plugin loader
\author alpha_one_x86
\version 0.3
\date 2010
\licence GPL3, see the file COPYING */
#include "PluginLoader.h"
PluginLoader::PluginLoader(QObject *parent) :
QObject(parent)
{
ULTRACOPIER_DEBUGCONSOLE(DebugLevel_Notice,"start");
//load the overall instance
plugins=PluginsManager::getInstance();
//load the plugin
plugins->lockPluginListEdition();
QList<PluginsAvailable> list=plugins->getPluginsByCategory(PluginType_PluginLoader);
foreach(PluginsAvailable currentPlugin,list)
onePluginAdded(currentPlugin);
qRegisterMetaType<PluginsAvailable>("PluginsAvailable");
qRegisterMetaType<CatchState>("CatchState");
connect(plugins,SIGNAL(onePluginAdded(PluginsAvailable)), this,SLOT(onePluginAdded(PluginsAvailable)));
connect(plugins,SIGNAL(onePluginWillBeRemoved(PluginsAvailable)), this,SLOT(onePluginWillBeRemoved(PluginsAvailable)),Qt::DirectConnection);
connect(plugins,SIGNAL(pluginListingIsfinish()), this,SLOT(allPluginIsloaded()));
plugins->unlockPluginListEdition();
needEnable=false;
last_state=Uncaught;
last_have_plugin=false;
last_inWaitOfReply=false;
}
PluginLoader::~PluginLoader()
{
ULTRACOPIER_DEBUGCONSOLE(DebugLevel_Notice,"start");
QList<PluginsAvailable> list=plugins->getPluginsByCategory(PluginType_PluginLoader);
foreach(PluginsAvailable currentPlugin,list)
onePluginWillBeRemoved(currentPlugin);
PluginsManager::destroyInstanceAtTheLastCall();
}
void PluginLoader::resendState()
{
sendState(true);
}
void PluginLoader::onePluginAdded(const PluginsAvailable &plugin)
{
if(plugin.category!=PluginType_PluginLoader)
return;
ULTRACOPIER_DEBUGCONSOLE(DebugLevel_Notice,"start");
QString pluginPath=plugin.path+PluginsManager::getResolvedPluginName("pluginLoader");
ULTRACOPIER_DEBUGCONSOLE(DebugLevel_Notice,"try load: "+pluginPath);
QPluginLoader *pluginLoader= new QPluginLoader(pluginPath);
QObject *pluginInstance = pluginLoader->instance();
if(pluginInstance)
{
PluginInterface_PluginLoader *PluginLoader = qobject_cast<PluginInterface_PluginLoader *>(pluginInstance);
//check if found
index=0;
loop_size=pluginList.size();
while(index<loop_size)
{
if(pluginList.at(index).PluginLoaderInterface==PluginLoader)
{
ULTRACOPIER_DEBUGCONSOLE(DebugLevel_Warning,QString("Plugin already found"));
pluginLoader->unload();
return;
}
index++;
}
if(PluginLoader)
{
#ifdef ULTRACOPIER_DEBUG
connect(PluginLoader,SIGNAL(debugInformation(DebugLevel,QString,QString,QString,int)),this,SLOT(debugInformation(DebugLevel,QString,QString,QString,int)));
#endif // ULTRACOPIER_DEBUG
LocalPlugin newEntry;
newEntry.options=new LocalPluginOptions("PluginLoader-"+plugin.name);
newEntry.pluginLoader = pluginLoader;
newEntry.PluginLoaderInterface = PluginLoader;
newEntry.path = plugin.path;
newEntry.state = Uncaught;
newEntry.inWaitOfReply = false;
pluginList << newEntry;
PluginLoader->setResources(newEntry.options,plugin.writablePath,plugin.path,ULTRACOPIER_VERSION_PORTABLE_BOOL);
connect(pluginList.last().PluginLoaderInterface,SIGNAL(newState(CatchState)),this,SLOT(newState(CatchState)));
if(needEnable)
{
pluginList.last().inWaitOfReply=true;
newEntry.PluginLoaderInterface->setEnabled(needEnable);
}
}
else
ULTRACOPIER_DEBUGCONSOLE(DebugLevel_Warning,"unable to cast the plugin: "+pluginLoader->errorString());
}
else
ULTRACOPIER_DEBUGCONSOLE(DebugLevel_Warning,"unable to load the plugin: "+pluginLoader->errorString());
}
void PluginLoader::onePluginWillBeRemoved(const PluginsAvailable &plugin)
{
if(plugin.category!=PluginType_PluginLoader)
return;
ULTRACOPIER_DEBUGCONSOLE(DebugLevel_Notice,"start");
index=0;
loop_size=pluginList.size();
while(index<loop_size)
{
if(plugin.path==pluginList.at(index).path)
{
pluginList.at(index).PluginLoaderInterface->setEnabled(false);
if(!pluginList.at(index).pluginLoader->isLoaded() || pluginList.at(index).pluginLoader->unload())
{
delete pluginList.at(index).options;
pluginList.removeAt(index);
}
sendState();
return;
}
index++;
}
}
void PluginLoader::load()
{
needEnable=true;
ULTRACOPIER_DEBUGCONSOLE(DebugLevel_Notice,"start");
int index=0;
while(index<pluginList.size())
{
pluginList[index].inWaitOfReply=true;
pluginList.at(index).PluginLoaderInterface->setEnabled(true);
index++;
}
}
void PluginLoader::unload()
{
ULTRACOPIER_DEBUGCONSOLE(DebugLevel_Notice,"start");
needEnable=false;
int index=0;
while(index<pluginList.size())
{
pluginList[index].inWaitOfReply=true;
pluginList.at(index).PluginLoaderInterface->setEnabled(false);
index++;
}
}
#ifdef ULTRACOPIER_DEBUG
void PluginLoader::debugInformation(DebugLevel level,const QString& fonction,const QString& text,const QString& file,const int& ligne)
{
DebugEngine::addDebugInformationStatic(level,fonction,text,file,ligne,"Plugin loader plugin");
}
#endif // ULTRACOPIER_DEBUG
void PluginLoader::allPluginIsloaded()
{
ULTRACOPIER_DEBUGCONSOLE(DebugLevel_Notice,"with value: "+QString::number(pluginList.size()>0));
sendState(true);
}
void PluginLoader::sendState(bool force)
{
ULTRACOPIER_DEBUGCONSOLE(DebugLevel_Notice,QString("start, pluginList.size(): %1, force: %2").arg(pluginList.size()).arg(force));
CatchState current_state=Uncaught;
bool found_not_listen=false,found_listen=false,found_inWaitOfReply=false;
int index=0;
while(index<pluginList.size())
{
if(current_state==Uncaught)
{
if(pluginList.at(index).state==Semiuncaught)
current_state=Semiuncaught;
else if(pluginList.at(index).state==Uncaught)
found_not_listen=true;
else if(pluginList.at(index).state==Caught)
found_listen=true;
}
if(pluginList.at(index).inWaitOfReply)
found_inWaitOfReply=true;
index++;
}
ULTRACOPIER_DEBUGCONSOLE(DebugLevel_Notice,QString("current_state: %1").arg(current_state));
if(current_state==Uncaught)
{
if(found_not_listen && !found_listen)
current_state=Uncaught;
else if(!found_not_listen && found_listen)
current_state=Caught;
else
current_state=Semiuncaught;
}
bool have_plugin=pluginList.size()>0;
if(force || current_state!=last_state || have_plugin!=last_have_plugin || found_inWaitOfReply!=last_inWaitOfReply)
{
ULTRACOPIER_DEBUGCONSOLE(DebugLevel_Notice,QString("send pluginLoaderReady(%1,%2,%3)").arg(current_state).arg(have_plugin).arg(found_inWaitOfReply));
emit pluginLoaderReady(current_state,have_plugin,found_inWaitOfReply);
}
else
ULTRACOPIER_DEBUGCONSOLE(DebugLevel_Notice,QString("Skip the signal sending"));
last_state=Uncaught;
last_have_plugin=have_plugin;
last_inWaitOfReply=found_inWaitOfReply;
}
void PluginLoader::newState(const CatchState &state)
{
ULTRACOPIER_DEBUGCONSOLE(DebugLevel_Notice,QString("start, state: %1").arg(state));
PluginInterface_PluginLoader *temp=qobject_cast<PluginInterface_PluginLoader *>(QObject::sender());
if(temp==NULL)
{
ULTRACOPIER_DEBUGCONSOLE(DebugLevel_Critical,QString("listener not located!"));
return;
}
int index=0;
while(index<pluginList.size())
{
if(temp==pluginList.at(index).PluginLoaderInterface)
{
pluginList[index].state=state;
pluginList[index].inWaitOfReply=false;
sendState(true);
return;
}
index++;
}
ULTRACOPIER_DEBUGCONSOLE(DebugLevel_Critical,QString("listener not found!"));
}
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