mirror of
https://github.com/RetroShare/RetroShare.git
synced 2024-12-13 18:04:34 -05:00
352 lines
10 KiB
C++
352 lines
10 KiB
C++
/*******************************************************************************
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* gui/PluginManager.cpp *
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* *
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* Copyright (c) 2006 Retroshare Team <retroshare.project@gmail.com> *
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* *
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* This program is free software: you can redistribute it and/or modify *
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* it under the terms of the GNU Affero General Public License as *
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* published by the Free Software Foundation, either version 3 of the *
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* License, or (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU Affero General Public License for more details. *
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* *
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* You should have received a copy of the GNU Affero General Public License *
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* along with this program. If not, see <https://www.gnu.org/licenses/>. *
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* *
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*******************************************************************************/
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#include <QFile>
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#include <QDir>
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#include <QRegExp>
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#include <QDebug>
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#include <QWidget> //a strange thing: it compiles without this header, but
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//then segfaults in some place
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#include <QApplication>
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#include "PluginManager.h"
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#include "PluginManagerWidget.h"
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#include "plugins/PluginInterface.h"
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#include "rshare.h"
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//=============================================================================
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//=============================================================================
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//=============================================================================
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PluginManager::PluginManager()
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{
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baseFolder = //qApp->applicationDirPath()+"///plugins" ;
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Rshare::dataDirectory() + "/plugins" ;
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lastError = "No error.";
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viewWidget = 0;
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// defaultLoad();
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}
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//=============================================================================
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void
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PluginManager::defaultLoad( )
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{
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qDebug() << " " << "Default load started" ;
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QDir workDir(baseFolder);
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if ( !workDir.exists() )
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{
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QString em= tr("base folder %1 doesn't exist, default load failed")
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.arg( baseFolder );
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emit errorAppeared( em );
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return ;
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}
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//=== get current available plugins =====
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QStringList currAvailable = workDir.entryList(QDir::Files);
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#if defined(Q_OS_WIN)
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QRegExp trx("*.dll") ;
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#elif defined(__MACH__)
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QRegExp trx("*.dylib");
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#else
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QRegExp trx("*.so");
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#endif
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trx.setPatternSyntax(QRegExp::Wildcard );
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currAvailable.filter( trx );
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qDebug() << " " << "can load this plugins: " << currAvailable ;
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//===
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foreach(QString pluginFileName, currAvailable)
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{
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QString fullfn( workDir.absoluteFilePath( pluginFileName ) );
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QString newName;
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int ti = readPluginInformation( fullfn, newName);
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if (! ti )
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{
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acceptPlugin(fullfn, newName);
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}
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}// foreach(QString pluginFileName, currAvailable)
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qDebug() << " " << "names are " << names;
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}
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//=============================================================================
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int
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PluginManager::readPluginInformation(QString fullFileName, QString& pluginName)
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{
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qDebug() << " " << "processing file " << fullFileName;
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PluginInterface* plugin = loadPluginInterface(fullFileName) ;
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pluginName = "Undefined name" ;
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if (plugin)
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{
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pluginName = plugin->pluginName();
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qDebug() << " " << "got pluginName:" << pluginName;
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delete plugin;
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return 0 ;
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}
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else
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{
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//do not emit anything, cuz error message already was sent
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//from loadPluginInterface(..)
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return 1; //this means, some rrror appeared
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}
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}
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//=============================================================================
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PluginInterface*
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PluginManager::loadPluginInterface(QString fileName)
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{
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QString errorMessage = "Default Error Message" ;
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PluginInterface* plugin = 0 ;
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QPluginLoader* plLoader = new QPluginLoader(fileName);
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QObject *pluginObject = plLoader->instance();
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if (pluginObject)
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{
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//qDebug() << " " << "loaded..." ;
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plugin = qobject_cast<PluginInterface*> (pluginObject) ;
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if (plugin)
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{
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errorMessage = "No error" ;
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}
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else
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{
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errorMessage = "Cast to 'PluginInterface*' failed";
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emit errorAppeared( errorMessage );
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}
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}
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else
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{
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errorMessage = "Istance wasn't created: " + plLoader->errorString() ;
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emit errorAppeared( errorMessage );
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}
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delete plLoader; // plugin instance will not be deleted with this action
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return plugin;
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}
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//=============================================================================
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PluginManager:: ~PluginManager()
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{
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}
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//=============================================================================
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void
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PluginManager::acceptPlugin(QString fileName, QString pluginName)
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{
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qDebug() << " " << "accepting plugin " << pluginName;
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names.append(pluginName);
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fileNames.append(fileName);
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if (viewWidget)
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viewWidget->registerNewPlugin( pluginName );
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emit newPluginRegistered( pluginName );
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}
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//=============================================================================
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QWidget*
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PluginManager::pluginWidget(QString pluginName)
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{
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QWidget* result = 0;
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int plIndex = names.indexOf( pluginName ) ;
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if (plIndex >=0 )
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{
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//=== load plugin's interface
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QString fn = fileNames.at(plIndex);
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PluginInterface* pliface = loadPluginInterface(fn);
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if (pliface)
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{
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//=== now, get a widget
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result = pliface->pluginWidget() ;
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if (result)
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{
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// all was good,
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qDebug() << " " << "got plg widget..." ;
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return result;
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}
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else
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{
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QString em=tr("Error: instance '%1' can't create a widget")
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.arg( pluginName );
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emit errorAppeared( em );
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return 0;
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}
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}
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else
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{
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// do nothing here...
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}
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}
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else
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{
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QString em = tr("Error: no plugin with name '%1' found")
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.arg(pluginName);
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emit errorAppeared( em );
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}
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}
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//=============================================================================
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QWidget*
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PluginManager::getViewWidget(QWidget* parent )
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{
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if (viewWidget)
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return viewWidget;
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//=== else, create the viewWidget and return it
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//
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viewWidget = new PluginManagerWidget();
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foreach(QString pn, names)
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{
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qDebug() << " " << "reg new plg " << pn;
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viewWidget->registerNewPlugin( pn );
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}
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connect(this , SIGNAL( errorAppeared(QString) ) ,
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viewWidget, SLOT( acceptErrorMessage( QString)));
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connect(viewWidget, SIGNAL( destroyed() ) ,
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this , SLOT( viewWidgetDestroyed( )));
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connect(viewWidget, SIGNAL( installPluginRequested(QString)),
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this , SLOT( installPlugin( QString)));
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connect(viewWidget, SIGNAL( removeRequested( QString ) ),
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this , SLOT( removePlugin(QString )));
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qDebug() << " PluginManager::getViewWidget done";
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return viewWidget;
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}
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//=============================================================================
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void
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PluginManager::viewWidgetDestroyed(QObject* obj )
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{
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qDebug() << " PluginManager::viewWidgetDestroyed is here";
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viewWidget = 0;
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}
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//=============================================================================
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void
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PluginManager::removePlugin(QString pluginName)
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{
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QWidget* result = 0;
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int plIndex = names.indexOf( pluginName ) ;
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if (plIndex >=0 )
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{
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QString fn = fileNames.at(plIndex);
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if (QDir::isRelativePath(fn))
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fn = QDir(baseFolder).path() + QDir::separator() + fn ;
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QFile fl(fn);
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if (!fl.remove())
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{
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QString em = tr("Error: failed to remove file %1"
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" (uninstalling plugin '%2')")
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.arg(fn).arg(pluginName);
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emit errorAppeared( em);
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}
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else
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{
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if (viewWidget)
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viewWidget->removePluginFrame( pluginName);
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}
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}
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else
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{
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QString em = tr("Error (uninstall): no plugin with name '%1' found")
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.arg(pluginName);
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emit errorAppeared( em );
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}
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}
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//=============================================================================
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void
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PluginManager::installPlugin(QString fileName)
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{
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qDebug() << " " << "PluginManager::installPlugin is here" ;
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if (!QFile::exists( fileName) )
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{
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QString em = tr("Error (installation): plugin file %1 doesn't exist")
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.arg( fileName );
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emit errorAppeared( em );
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return ;
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}
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QString pn;
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if (! readPluginInformation(fileName, pn))
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{
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QFile sf( fileName) ;
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QString newFileName = baseFolder + QDir::separator() +
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QFileInfo( fileName).fileName();
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if ( QFile::copy( fileName, newFileName ) )
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{
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QString pn;
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int ti = readPluginInformation( newFileName , pn );
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if (! ti )
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{
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acceptPlugin(newFileName, pn);
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}
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} //
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else
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{
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QString em = tr("Error: can't copy %1 to %2")
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.arg(fileName, newFileName) ;
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emit errorAppeared( em );
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}
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}
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else
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{
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// do nothing here: read plugin information emits its own error
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}
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}
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//=============================================================================
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