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factory.cpp
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factory.cpp
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/**
* vim: ft=cpp tw=78
* Copyright (C) 2011 - 2013 Jacky Alciné <me@jalcine.me>
*
* Wintermute is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* Wintermute 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Wintermute. If not, see <http://www.gnu.org/licenses/>.
**/
#include <QtCore/QDebug>
#include "factory.hpp"
#include "plugin.hpp"
#include "logging.hpp"
#include "application.hpp"
#include "private/factory.hpp"
#include "Wintermute/factory.moc"
using namespace Wintermute;
using Wintermute::Factory;
using Wintermute::FactoryPrivate;
Factory* Factory::self = 0;
Factory::Factory() : QObject ( Application::instance() ), d_ptr ( new FactoryPrivate )
{
connect ( wntrApp, SIGNAL ( started() ), SLOT ( start() ) );
connect ( wntrApp, SIGNAL ( stopped() ), SLOT ( stop() ) );
}
Factory*
Factory::instance()
{
if ( !self ) {
self = new Factory;
}
return self;
}
Plugin*
Factory::plugin ( const QString& name ) const
{
Q_D ( const Factory );
return d->plugin ( name );
}
QStringList
Factory::availablePlugins() const
{
Q_D ( const Factory );
return d->availablePlugins();
}
QStringList
Factory::activePlugins() const
{
Q_D ( const Factory );
return d->activePlugins();
}
bool
Factory::loadedPlugin ( const QString& name )
{
return activePlugins().contains ( name );
}
// TODO: Ensure plug-in loading process.
bool
Factory::loadPlugin ( const QString& id )
{
Q_D ( Factory );
Logger* log = wlog ( this );
if ( this->loadedPlugin ( id ) ) {
log->warn ( QString ( "Already loaded plug-in %1." ).arg ( id ) );
return true;
}
QPluginLoader* loader = d->obtainBinary ( id );
Plugin* plugin = 0;
if ( !loader ) {
log->debug ( QString ( "Couldn't find binary for plugin '%1'." ).arg ( id ) );
return false;
}
log->debug ( QString ( "Found binary for plugin '%1', loading symbols..." ).arg ( id ) );
plugin = qobject_cast<Plugin*> ( loader->instance() );
if ( !plugin ) {
log->error ( QString ( "Failed to load plugin; %1" ).arg ( loader->errorString() ) );
return false;
}
d->active.insert ( id, plugin );
log->info ( QString ( "Invoking start of %1..." ).arg ( plugin->name() ) );
plugin->start();
emit plugin->started();
log->info ( QString ( "%1 is loaded." ).arg ( id ) );
return true;
}
// TODO: Verify the unloading process.
bool
Factory::unloadPlugin ( const QString& id )
{
Q_D ( Factory );
Plugin* plugin = d->plugin ( id );
if ( !plugin->isLoaded() ) {
return true;
}
plugin->stop();
emit plugin->stopped();
plugin->d_ptr->loader->unload();
return true;
}
// TODO: Auto load plugins on start.
bool
Factory::autoloadPlugins()
{
Logger* log = wlog ( this );
QVariant autoload = Wintermute::Application::setting ( "Plugins/Autoload", QStringList() );
QStringList autoloadList = autoload.value<QStringList>();
QStringList all = this->availablePlugins();
log->info ( QString ( "Loading %1 of %2 plugins..." ).
arg ( autoloadList.length() ).arg ( all.length() ) );
if ( autoloadList.empty() ) {
log->warn ( "No plug-ins were specified for auto-loading." );
}
Q_FOREACH ( QString plugin, autoloadList ) {
if ( !all.contains ( plugin ) ) {
log->info ( QString ( "The plugin '%1' is not available." ).arg ( plugin ) );
}
bool pluginLoaded = this->loadPlugin ( plugin );
if ( !pluginLoaded ) {
log->info ( QString ( "Autoload of %1 failed;" ).arg ( plugin ) +
" thus cancelling the auto-loading process." );
this->unloadAllPlugins();
return false;
}
}
return true;
}
bool
Factory::unloadAllPlugins()
{
return false;
}
void
Factory::pluginStateChange ( const QString& name, const Plugin::State& state )
{
Logger* log = wlog ( this );
log->info ( "Passing signal." );
emit this->pluginStateChanged ( name, state );
}
void
Factory::start()
{
Logger* log = wlog ( this );
log->info ( "Starting.." );
this->autoloadPlugins();
emit this->started();
log->info ( "Started." );
}
void
Factory::stop()
{
Logger* log = wlog ( this );
log->info ( "Stopping.." );
emit this->stopped();
this->unloadAllPlugins();
log->info ( "Stopped." );
}
Factory::~Factory()
{
}