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Moved plugin loading from QgisApp to QgsPluginRegistry 
git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@9630 c8812cc2-4d05-0410-92ff-de0c093fc19c
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wonder committed Nov 12, 2008
1 parent cbbcb5b commit ab393f3
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Showing 4 changed files with 259 additions and 223 deletions.
221 changes: 5 additions & 216 deletions src/app/qgisapp.cpp
View file
Expand Up @@ -187,11 +187,6 @@

class QTreeWidgetItem;

/* typedefs for plugins */
typedef QgisPlugin *create_ui( QgisInterface * qI );
typedef QString name_t();
typedef QString description_t();
typedef int type_t();

// IDs for locating particular menu items
const int BEFORE_RECENT_PATHS = 123;
Expand Down Expand Up @@ -397,7 +392,8 @@ QgisApp::QgisApp( QSplashScreen *splash, QWidget * parent, Qt::WFlags fl )
// load any plugins that were running in the last session
mSplash->showMessage( tr( "Restoring loaded plugins" ), Qt::AlignHCenter | Qt::AlignBottom );
qApp->processEvents();
restoreSessionPlugins( QgsApplication::pluginPath() );
QgsPluginRegistry::instance()->setQgisInterface( mQgisInterface );
QgsPluginRegistry::instance()->restoreSessionPlugins( QgsApplication::pluginPath() );

mSplash->showMessage( tr( "Initializing file filters" ), Qt::AlignHCenter | Qt::AlignBottom );
qApp->processEvents();
Expand Down Expand Up @@ -1827,109 +1823,7 @@ void QgisApp::about()
abt->activateWindow();
}

/** Load up any plugins used in the last session
*/

void QgisApp::restoreSessionPlugins( QString thePluginDirString )
{
QSettings mySettings;

#ifdef WIN32
QString pluginExt = "*.dll";
#else
QString pluginExt = "*.so*";
#endif

// check all libs in the current plugin directory and get name and descriptions
QDir myPluginDir( thePluginDirString, pluginExt, QDir::Name | QDir::IgnoreCase, QDir::Files | QDir::NoSymLinks );

for ( uint i = 0; i < myPluginDir.count(); i++ )
{
QString myFullPath = thePluginDirString + "/" + myPluginDir[i];

QString baseName = QFileInfo( myFullPath ).baseName();
QLibrary *myLib = new QLibrary( myFullPath );
bool loaded = myLib->load();
if ( loaded )
{

name_t * myName = ( name_t * ) cast_to_fptr( myLib->resolve( "name" ) );
description_t * myDescription = ( description_t * ) cast_to_fptr( myLib->resolve( "description" ) );
version_t * myVersion = ( version_t * ) cast_to_fptr( myLib->resolve( "version" ) );
if ( myName && myDescription && myVersion )
{
//check if the plugin was active on last session

// Windows stores a "true" value as a 1 in the registry so we
// have to use readBoolEntry in this function

if ( mySettings.value( "/Plugins/" + baseName ).toBool() )
{
//QgsDebugMsg("Loading plugin: " + myEntryName);

loadPlugin( myFullPath, myName() );
}
else
{
//QgsDebugMsg("Plugin was not active last session, leaving disabled: " + myEntryName);
}
}
else
{
//QgsDebugMsg("Failed to get name, description, or type for " + myLib->fileName());
}
}
else
{
//QgsDebugMsg("Failed to load " + myLib->fileName());
//QgsDebugMsg("Reason: " + myLib->errorString());
}
delete myLib;
}

QString pluginName, description, version;

if ( mPythonUtils && mPythonUtils->isEnabled() )
{

// check for python plugins system-wide
QStringList pluginList = mPythonUtils->pluginList();
std::cout << "Loading python plugins" << std::endl; // OK


for ( int i = 0; i < pluginList.size(); i++ )
{
QString packageName = pluginList[i];

// import plugin's package
if ( !mPythonUtils->loadPlugin( packageName ) )
continue;

// get information from the plugin
// if there are some problems, don't continue with metadata retreival
pluginName = mPythonUtils->getPluginMetadata( packageName, "name" );
if ( pluginName != "__error__" )
{
description = mPythonUtils->getPluginMetadata( packageName, "description" );
if ( description != "__error__" )
version = mPythonUtils->getPluginMetadata( packageName, "version" );
}

if ( pluginName == "__error__" || description == "__error__" || version == "__error__" )
{
QMessageBox::warning( this, tr( "Python error" ), tr( "Error when reading metadata of plugin " ) + packageName );
continue;
}

if ( mySettings.value( "/PythonPlugins/" + packageName ).toBool() )
{
loadPythonPlugin( packageName, pluginName );
}
}
}
std::cout << "Plugin loading completed" << std::endl; // OK

}


/**
Expand Down Expand Up @@ -4131,6 +4025,7 @@ void QgisApp::showPluginManager()
pm->resizeColumnsToContents();
if ( pm->exec() )
{
QgsPluginRegistry* pRegistry = QgsPluginRegistry::instance();
// load selected plugins
std::vector < QgsPluginItem > pi = pm->getSelectedPlugins();
std::vector < QgsPluginItem >::iterator it = pi.begin();
Expand All @@ -4139,11 +4034,11 @@ void QgisApp::showPluginManager()
QgsPluginItem plugin = *it;
if ( plugin.isPython() )
{
loadPythonPlugin( plugin.fullPath(), plugin.name() );
pRegistry->loadPythonPlugin( plugin.fullPath() );
}
else
{
loadPlugin( plugin.fullPath(), plugin.name() );
pRegistry->loadCppPlugin( plugin.fullPath() );
}
it++;
}
Expand Down Expand Up @@ -4200,112 +4095,6 @@ void QgisApp::loadPythonSupport()
}
}

void QgisApp::loadPythonPlugin( QString packageName, QString pluginName )
{
if ( !mPythonUtils || !mPythonUtils->isEnabled() )
{
QgsDebugMsg( "Python is not enabled in QGIS." );
return;
}


QgsPluginRegistry *pRegistry = QgsPluginRegistry::instance();

// is loaded already?
if ( ! pRegistry->isLoaded( packageName ) )
{
mPythonUtils->loadPlugin( packageName );
mPythonUtils->startPlugin( packageName );

// TODO: test success

// add to plugin registry
pRegistry->addPlugin( packageName, QgsPluginMetadata( packageName, pluginName, NULL, true ) );

// add to settings
QSettings settings;
settings.setValue( "/PythonPlugins/" + packageName, true );
std::cout << "Loaded : " << pluginName.toLocal8Bit().constData() << " (package: "
<< packageName.toLocal8Bit().constData() << ")" << std::endl; // OK

}
}

void QgisApp::loadPlugin( QString theFullPathName, QString name )
{
QSettings settings;
// first check to see if its already loaded
QgsPluginRegistry *pRegistry = QgsPluginRegistry::instance();

QString baseName = QFileInfo( theFullPathName ).baseName();

if ( pRegistry->isLoaded( baseName ) )
{
// plugin is loaded
// QMessageBox::warning(this, "Already Loaded", description + " is already loaded");
}
else
{
QLibrary *myLib = new QLibrary( theFullPathName );

QString myError; //we will only show detailed diagnostics if something went wrong
myError += "Library name is " + myLib->fileName() + " " + QString( __LINE__ ) + " in " + QString( __FUNCTION__ ) + "\n";

bool loaded = myLib->load();
if ( loaded )
{
myError += "Attempting to resolve the classFactory function " + QString( __LINE__ ) + " in " + QString( __FUNCTION__ ) + "\n";

type_t *pType = ( type_t * ) cast_to_fptr( myLib->resolve( "type" ) );

switch ( pType() )
{
case QgisPlugin::RENDERER:
case QgisPlugin::UI:
{
// UI only -- doesn't use mapcanvas
create_ui *cf = ( create_ui * ) cast_to_fptr( myLib->resolve( "classFactory" ) );
if ( cf )
{
QgisPlugin *pl = cf( mQgisInterface );
if ( pl )
{
pl->initGui();
// add it to the plugin registry
pRegistry->addPlugin( baseName, QgsPluginMetadata( myLib->fileName(), name, pl ) );
//add it to the qsettings file [ts]
settings.setValue( "/Plugins/" + baseName, true );
}
else
{
// something went wrong
QMessageBox::warning( this, tr( "Error Loading Plugin" ), tr( "There was an error loading a plugin."
"The following diagnostic information may help the QGIS developers resolve the issue:\n%1." ).arg
( myError ) );
//disable it to the qsettings file [ts]
settings.setValue( "/Plugins/" + baseName, false );
}
}
else
{
QgsDebugMsg( "Unable to find the class factory for " + theFullPathName );
}

}
break;
default:
// type is unknown
QgsDebugMsg( "Plugin " + theFullPathName + " did not return a valid type and cannot be loaded" );
break;
}
}
else
{
QgsDebugMsg( "Failed to load " + theFullPathName );
}
delete myLib;
}
}


void QgisApp::checkQgisVersion()
Expand Down
6 changes: 0 additions & 6 deletions src/app/qgisapp.h
View file
Expand Up @@ -378,16 +378,10 @@ class QgisApp : public QMainWindow
void zoomToLayerExtent();
//! zoom to actual size of raster layer
void zoomActualSize();
//! load any plugins used in the last qgis session
void restoreSessionPlugins( QString thePluginDirString );
//! plugin manager
void showPluginManager();
//! load python support if possible
void loadPythonSupport();
//! plugin loader
void loadPlugin( QString mFullPath, QString name );
//! python plugin loader
void loadPythonPlugin( QString packageName, QString pluginName );
//! Find the QMenu with the given name (ie the user visible text on the menu item)
QMenu* getPluginMenu( QString menuName );
//! Add the action to the submenu with the given name under the plugin menu
Expand Down

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