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/*****************************************************************
This file is part of the KDE project.
Copyright (C) 1999, 2000 Daniel M. Duley <mosfet@kde.org>
Copyright (C) 2003 Lubos Lunak <l.lunak@kde.org>
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
******************************************************************/
#include "kdecoration_plugins_p.h"
#include <kconfig.h>
#include <kdebug.h>
#include <klocale.h>
#include <klibloader.h>
#include <assert.h>
#include <tqdir.h>
#include <tqfile.h>
#include "kdecorationfactory.h"
KDecorationPlugins::KDecorationPlugins( KConfig* cfg )
: create_ptr( NULL ),
library( NULL ),
fact( NULL ),
old_library( NULL ),
old_fact( NULL ),
pluginStr( "twin3_undefined " ),
config( cfg )
{
}
KDecorationPlugins::~KDecorationPlugins()
{
if(library)
{
assert( fact != NULL );
delete fact;
library->unload();
}
if(old_library)
{
assert( old_fact != NULL );
delete old_fact;
old_library->unload();
}
}
bool KDecorationPlugins::reset( unsigned long changed )
{
TQString oldPlugin = pluginStr;
config->reparseConfiguration();
bool ret = false;
if(( !loadPlugin( "" ) && library ) // "" = read the one in cfg file
|| oldPlugin == pluginStr )
{ // no new plugin loaded, reset the old one
assert( fact != NULL );
ret = fact->reset( changed );
}
return ret || oldPlugin != pluginStr;
}
KDecorationFactory* KDecorationPlugins::factory()
{
return fact;
}
// convenience
KDecoration* KDecorationPlugins::createDecoration( KDecorationBridge* bridge )
{
if( fact != NULL )
return fact->createDecoration( bridge );
return NULL;
}
// returns true if plugin was loaded successfully
bool KDecorationPlugins::loadPlugin( TQString nameStr )
{
if( nameStr.isEmpty())
{
KConfigGroupSaver saver( config, "Style" );
nameStr = config->readEntry("PluginLib", defaultPlugin );
}
// make sure people can switch between HEAD and twin_iii branch
if( nameStr.startsWith( "twin_" ))
nameStr = "twin3_" + nameStr.mid( 5 );
KLibrary *oldLibrary = library;
KDecorationFactory* oldFactory = fact;
TQString path = KLibLoader::findLibrary(TQFile::encodeName(nameStr));
// If the plugin was not found, try to find the default
if (path.isEmpty())
{
nameStr = defaultPlugin;
path = KLibLoader::findLibrary(TQFile::encodeName(nameStr));
}
// If no library was found, exit twin with an error message
if (path.isEmpty())
{
error( i18n("No window decoration plugin library was found." ));
return false;
}
// Check if this library is not already loaded.
if(pluginStr == nameStr)
return true;
// Try loading the requested plugin
library = KLibLoader::self()->library(TQFile::encodeName(path));
// If that fails, fall back to the default plugin
if (!library)
{
kdDebug() << " could not load library, try default plugin again" << endl;
nameStr = defaultPlugin;
if ( pluginStr == nameStr )
return true;
path = KLibLoader::findLibrary(TQFile::encodeName(nameStr));
if (!path.isEmpty())
library = KLibLoader::self()->library(TQFile::encodeName(path));
}
if (!library)
{
error( i18n("The default decoration plugin is corrupt "
"and could not be loaded." ));
return false;
}
create_ptr = NULL;
if( library->hasSymbol("create_factory"))
{
void* create_func = library->symbol("create_factory");
if(create_func)
create_ptr = (KDecorationFactory* (*)())create_func;
}
if(!create_ptr)
{
error( i18n( "The library %1 is not a KWin plugin." ).arg( path ));
library->unload();
return false;
}
fact = create_ptr();
fact->checkRequirements( this ); // let it check what is supported
pluginStr = nameStr;
// For clients in tdeartwork
TQString catalogue = nameStr;
catalogue.replace( "twin3_", "twin_" );
KGlobal::locale()->insertCatalogue( catalogue );
// For KCommonDecoration based clients
KGlobal::locale()->insertCatalogue( "twin_lib" );
// For clients in tdebase
KGlobal::locale()->insertCatalogue( "twin_clients" );
// For clients in tdeartwork
KGlobal::locale()->insertCatalogue( "twin_art_clients" );
old_library = oldLibrary; // save for delayed destroying
old_fact = oldFactory;
return true;
}
void KDecorationPlugins::destroyPreviousPlugin()
{
// Destroy the old plugin
if(old_library)
{
delete old_fact;
old_fact = NULL;
old_library->unload();
old_library = NULL;
}
}
void KDecorationPlugins::error( const TQString& )
{
}
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