# khtml Library API Documentation

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# khtml_factory.cpp

    00001 /* This file is part of the KDE project
    00002  *
    00003  * Copyright (C) 2000 Simon Hausmann <hausmann@kde.org>
    00004  *
    00005  * This library is free software; you can redistribute it and/or
    00006  * modify it under the terms of the GNU Library General Public
    00007  * License as published by the Free Software Foundation; either
    00008  * version 2 of the License, or (at your option) any later version.
    00009  *
    00010  * This library is distributed in the hope that it will be useful,
    00011  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    00012  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00013  * Library General Public License for more details.
    00014  *
    00015  * You should have received a copy of the GNU Library General Public License
    00016  * along with this library; see the file COPYING.LIB.  If not, write to
    00017  * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    00018  * Boston, MA 02111-1307, USA.
    00019  */
    00020
    00021 #include "khtml_factory.h"
    00022 #include "khtml_part.h"
    00023 #include "khtml_settings.h"
    00024
    00025 #include "css/cssstyleselector.h"
    00026 #include "html/html_imageimpl.h"
    00027 #include "rendering/render_style.h"
    00028 #include "rendering/break_lines.h"
    00029 #include "misc/loader.h"
    00030 #include "misc/arena.h"
    00031
    00032 #include <kinstance.h>
    00033 #include <kaboutdata.h>
    00034 #include <klocale.h>
    00035
    00036 #include <assert.h>
    00037
    00038 #include <kdebug.h>
    00039
    00040 template class QPtrList<KHTMLPart>;
    00041
    00042 extern "C" KDE_EXPORT void *init_libkhtml()
    00043 {
    00044     // We can't use a plain self() here, because that would
    00045     // return the global factory, which might already exist
    00046     // at the time init_libkhtml is called! As soon as someone
    00047     // does new KHTMLPart() in his application and loads up
    00048     // an html document into that part which either embeds
    00049     // embeds another KHTMLPart instance via <object> or
    00050     // as html frame, then we cannot return self(), as
    00051     // what we return here is what the KLibLoader deletes
    00052     // in the end, and we don't want the libloader to
    00053     // delete our global instance. Anyway, the new
    00054     // KHTMLFactory we create here is very cheap :)
    00055     // (Simon)
    00056     return new KHTMLFactory( true );
    00057 }
    00058
    00059 KHTMLFactory *KHTMLFactory::s_self = 0;
    00060 unsigned long int KHTMLFactory::s_refcnt = 0;
    00061 KInstance *KHTMLFactory::s_instance = 0;
    00062 KAboutData *KHTMLFactory::s_about = 0;
    00063 KHTMLSettings *KHTMLFactory::s_settings = 0;
    00064 QPtrList<KHTMLPart> *KHTMLFactory::s_parts = 0;
    00065 QString *KHTMLSettings::avFamilies = 0;
    00066
    00067 KHTMLFactory::KHTMLFactory( bool clone )
    00068 {
    00069     if ( clone )
    00070         ref();
    00071 }
    00072
    00073 KHTMLFactory::~KHTMLFactory()
    00074 {
    00075     if ( s_self == this )
    00076     {
    00077         assert( !s_refcnt );
    00078
    00079         delete s_instance;
    00080         delete s_about;
    00081         delete s_settings;
    00082     delete KHTMLSettings::avFamilies;
    00083         if ( s_parts )
    00084         {
    00085             assert( s_parts->isEmpty() );
    00086             delete s_parts;
    00087         }
    00088
    00089         s_instance = 0;
    00090         s_about = 0;
    00091         s_settings = 0;
    00092         s_parts = 0;
    00093     KHTMLSettings::avFamilies = 0;
    00094
    00095         // clean up static data
    00096         khtml::CSSStyleSelector::clear();
    00097         khtml::RenderStyle::cleanup();
    00098         khtml::Cache::clear();
    00099         khtml::cleanup_thaibreaks();
    00100         khtml::ArenaFinish();
    00101     }
    00102     else
    00103         deref();
    00104 }
    00105
    00106 KParts::Part *KHTMLFactory::createPartObject( QWidget *parentWidget, const char *widgetName, QObject *parent, const char *name, const char *className, const QStringList & )
    00107 {
    00108   KHTMLPart::GUIProfile prof = KHTMLPart::DefaultGUI;
    00109   if ( strcmp( className, "Browser/View" ) == 0 )
    00110     prof = KHTMLPart::BrowserViewGUI;
    00111
    00112   return new KHTMLPart( parentWidget, widgetName, parent, name, prof );
    00113 }
    00114
    00115 void KHTMLFactory::ref()
    00116 {
    00117     if ( !s_refcnt && !s_self )
    00118     {
    00119         // we can't use a staticdeleter here, because that would mean
    00120         // that the factory gets deleted from within a qPostRoutine, called
    00121         // from the QApplication destructor. That however is too late, because
    00122         // we want to destruct a KInstance object, which involves destructing
    00123         // a KConfig object, which might call KGlobal::dirs() (in sync()) which
    00124         // probably is not going to work ;-)
    00125         // well, perhaps I'm wrong here, but as I'm unsure I try to stay on the
    00126         // safe side ;-) -> let's use a simple reference counting scheme
    00127         // (Simon)
    00128         s_self = new KHTMLFactory;
    00129         khtml::Cache::init();
    00130     }
    00131
    00132     s_refcnt++;
    00133 }
    00134
    00135 void KHTMLFactory::deref()
    00136 {
    00137     if ( !--s_refcnt && s_self )
    00138     {
    00139         delete s_self;
    00140         s_self = 0;
    00141     }
    00142 }
    00143
    00144 void KHTMLFactory::registerPart( KHTMLPart *part )
    00145 {
    00146     if ( !s_parts )
    00147         s_parts = new QPtrList<KHTMLPart>;
    00148
    00149     if ( !s_parts->containsRef( part ) )
    00150     {
    00151         s_parts->append( part );
    00152         ref();
    00153     }
    00154 }
    00155
    00156 void KHTMLFactory::deregisterPart( KHTMLPart *part )
    00157 {
    00158     assert( s_parts );
    00159
    00160     if ( s_parts->removeRef( part ) )
    00161     {
    00162         if ( s_parts->isEmpty() )
    00163         {
    00164             delete s_parts;
    00165             s_parts = 0;
    00166         }
    00167         deref();
    00168     }
    00169 }
    00170
    00171 KInstance *KHTMLFactory::instance()
    00172 {
    00173   assert( s_self );
    00174
    00175   if ( !s_instance )
    00176   {
    00177     s_about = new KAboutData( "khtml", I18N_NOOP( "KHTML" ), "4.0",
    00178                               I18N_NOOP( "Embeddable HTML component" ),
    00179                               KAboutData::License_LGPL );
    00180     s_about->addAuthor( "Lars Knoll", 0, "knoll@kde.org" );
    00181     s_about->addAuthor( "Antti Koivisto", 0, "koivisto@kde.org" );
    00182     s_about->addAuthor( "Waldo Bastian", 0, "bastian@kde.org" );
    00183     s_about->addAuthor( "Dirk Mueller", 0, "mueller@kde.org" );
    00184     s_about->addAuthor( "Peter Kelly", 0, "pmk@kde.org" );
    00185     s_about->addAuthor( "Torben Weis", 0, "weis@kde.org" );
    00186     s_about->addAuthor( "Martin Jones", 0, "mjones@kde.org" );
    00187     s_about->addAuthor( "Simon Hausmann", 0, "hausmann@kde.org" );
    00188     s_about->addAuthor( "Tobias Anton", 0, "anton@stud.fbi.fh-darmstadt.de" );
    00189
    00190     s_instance = new KInstance( s_about );
    00191   }
    00192
    00193   return s_instance;
    00194 }
    00195
    00196 KHTMLSettings *KHTMLFactory::defaultHTMLSettings()
    00197 {
    00198   assert( s_self );
    00199   if ( !s_settings )
    00200     s_settings = new KHTMLSettings();
    00201
    00202   return s_settings;
    00203 }
    00204
    00205 using namespace KParts;
    00206 #include "khtml_factory.moc"
    00207

This file is part of the documentation for khtml Library Version 3.4.1.
Documentation copyright © 1996-2004 the KDE developers.
Generated on Sat Jun 11 20:33:12 2005 by doxygen 1.4.1 written by Dimitri van Heesch, © 1997-2003