source files imported

git-svn-id: https://svn.code.sf.net/p/qlscribe/svn/trunk@2 cac9541e-1b8d-4bfa-827e-589bba606050

src/qshapefactory.cpp

@@ -0,0 +1,144 @@
+/*  qlscribe - Qt based application to print lightScribe discs
+
+    Copyright (C) 2009 Vyacheslav Kononenko <vyacheslav@kononenko.net>
+
+    This program 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 2 of the License, or
+    (at your option) any later version.
+
+    This program 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 this program; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+
+    $Id:$ */
+
+#include "qshapefactory.h"
+
+#include <QGraphicsItem>
+#include <QMessageBox>
+#include <QXmlStreamWriter>
+
+QShapeController::~QShapeController()
+{
+}
+
+bool QShapeController::edit( QGraphicsItem *item, QWidget *parent ) const
+{
+   QItemDialog *dialog = createDialog( parent );
+   if( !dialog )
+      return false;
+
+   bool rez = false;
+   try {
+      rez = dialog->exec( item ) == QDialog::Accepted;
+   }
+   catch(...) {
+      delete dialog;
+      throw;
+   }
+   delete dialog;
+   return rez;
+}
+
+void QShapeController::write( QXmlStreamWriter &writer, const QGraphicsItem *item ) const
+{
+   writer.writeStartElement( "item" );
+   writer.writeAttribute( QXmlStreamAttribute( "type", name() ) );
+   writeData( writer, item );
+   writer.writeEndElement();
+}
+
+QGraphicsItem *QShapeController::read( QXmlStreamReader &reader ) const
+{
+   QGraphicsItem *item = create();
+   try {
+      while( true ) {
+         QXmlStreamReader::TokenType ttype = reader.readNext();
+
+         if( reader.atEnd() )
+            throw QString( "QShapeController: unexpected end of document" );
+
+         if( ttype == QXmlStreamReader::EndElement )
+            break;;
+
+         if( ttype == QXmlStreamReader::StartElement ) {
+            QString elementName = reader.name().toString();
+            QXmlStreamAttributes attributes = reader.attributes();
+            QString data = reader.readElementText();
+
+            readData( elementName, attributes, data, item );
+         }
+      }
+   }
+   catch(...) {
+      delete item;
+      throw;
+   }
+   return item;
+}
+
+QShapeFactory &QShapeFactory::QShapeFactory::instance()
+{
+   static QShapeFactory inst;
+   return inst;
+}
+
+QShapeFactory::QShapeFactory()
+{
+}
+
+QShapeFactory::~QShapeFactory()
+{
+   for( iterator i = begin(); i != end(); ++i )
+      delete i->second;
+}
+
+
+QString QShapeFactory::name( int type ) const
+{
+   QShapeController *ctrl = getController( type );
+   return ctrl ? ctrl->name() : QString();
+}
+
+QGraphicsItem *QShapeFactory::create( int type ) const
+{
+   QShapeController *ctrl = getController( type );
+   return ctrl ? ctrl->create() : 0;
+}
+
+bool QShapeFactory::edit( QGraphicsItem *item, QWidget *parent ) const
+{
+   QShapeController *ctrl = getController( item->type() );
+   if( ctrl )
+      return ctrl->edit( item, parent );
+
+   return false;
+}
+
+QShapeController *QShapeFactory::getController( int type ) const
+{
+   Controllers::const_iterator f = m_controllers.find( type );
+   if( f == m_controllers.end() ) {
+      QMessageBox::warning( 0, "Warning", QObject::tr( "Cannot find controller for type %n", 0, type ) );
+      return 0;
+   }
+   return f->second;
+}
+
+QShapeFactory::iterator QShapeFactory::find( const QString &name ) const
+{
+   Name2Type::const_iterator f = m_name2type.find( name );
+   return f == m_name2type.end() ? end() : find( f->second );
+}
+
+void QShapeFactory::registerController( int type, QShapeController *ctrl )
+{
+   m_controllers.insert( std::make_pair( type, ctrl ) );
+   m_name2type.insert( std::make_pair( ctrl->name(), type ) );
+}