Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdegraphics@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 281 insertions, 0 deletions

diff --git a/kpovmodeler/pmdeletecommand.cpp b/kpovmodeler/pmdeletecommand.cpp
new file mode 100644
index 00000000..fa5ff47b
--- /dev/null
+++ b/kpovmodeler/pmdeletecommand.cpp
@@ -0,0 +1,281 @@
+/*
+**************************************************************************
+                                 description
+                             --------------------
+    copyright            : (C) 2000-2001 by Andreas Zehender
+    email                : [email protected]
+**************************************************************************
+
+**************************************************************************
+*                                                                        *
+*  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.                                   *
+*                                                                        *
+**************************************************************************/
+
+
+#include "pmdeletecommand.h"
+#include "pmcommandmanager.h"
+#include "pmdeclare.h"
+#include "pmrecursiveobjectiterator.h"
+#include "pmmemento.h"
+
+#include <klocale.h>
+#include <kmessagebox.h>
+#include <qptrdict.h>
+
+PMDeleteCommand::PMDeleteCommand( PMObject* obj )
+      : PMCommand( i18n( "Delete %1" ).arg( obj->name( ) ) )
+{
+   // the scene can not be deleted!
+   if( obj->parent( ) )
+      m_infoList.append( new PMDeleteInfo( obj ) );
+   else
+   {
+      // object has no parent!
+      // top level objects can't be moved, move all child items
+      PMObject* tmp;
+      for( tmp = obj->firstChild( ); tmp; tmp = tmp->nextSibling( ) )
+         m_infoList.append( new PMDeleteInfo( tmp ) );
+   }
+   m_executed = false;
+   m_firstExecution = true;
+   m_linksCreated = false;
+}
+
+PMDeleteCommand::PMDeleteCommand( const PMObjectList& list )
+      : PMCommand( i18n( "Delete Objects" ) )
+{
+   PMObjectListIterator it( list );
+   PMObject* obj;
+
+   for( ; it.current( ); ++it )
+   {
+      obj = it.current( );
+      
+      if( obj->parent( ) )  
+         m_infoList.append( new PMDeleteInfo( obj ) );
+      else
+      {
+         // object has no parent!
+         // top level objects can't be moved, move all child items
+         PMObject* tmp;
+         for( tmp = obj->firstChild( ); tmp; tmp = tmp->nextSibling( ) )
+            m_infoList.append( new PMDeleteInfo( tmp ) );
+      }
+   }
+         
+   m_infoList.setAutoDelete( true );
+   m_executed = false;
+   m_firstExecution = true;
+   m_linksCreated = false;
+}
+
+PMDeleteCommand::~PMDeleteCommand( )
+{
+   if( m_executed )
+   {
+      PMDeleteInfoListIterator it( m_infoList );
+      for( ; it.current( ); ++it )
+         delete ( it.current( )->deletedObject( ) );
+   }
+
+   m_infoList.clear( );
+}
+
+void PMDeleteCommand::execute( PMCommandManager* theManager )
+{
+   if( !m_executed )
+   {
+      PMDeleteInfoListIterator it( m_infoList );
+      PMDeleteInfo* info = 0;
+      PMObject* parent;
+      
+      if( !m_linksCreated )
+      {
+         PMDeclare* decl;
+         for( ; it.current( ); ++it )
+         {
+            PMRecursiveObjectIterator oit( it.current( )->deletedObject( ) );
+            for( ; oit.current( ); ++oit )
+            {
+               decl = oit.current( )->linkedObject( );
+               if( decl )
+               {
+                  m_links.append( oit.current( ) );
+                  if( !m_linkedDeclares.containsRef( decl ) )
+                     m_linkedDeclares.append( decl );                  
+               }
+            }
+         }
+         m_linksCreated = true;
+      }
+
+      PMObjectListIterator lit( m_links );
+      for( ; lit.current( ); ++lit )
+         lit.current( )->linkedObject( )->removeLinkedObject( lit.current( ) );
+
+      for( it.toLast( ); it.current( ); --it )
+      {
+         info = it.current( );
+         parent = info->parent( );
+         // signal has to be emitted before the item is removed
+         theManager->cmdObjectChanged( info->deletedObject( ), PMCRemove );
+         if( m_firstExecution )
+            if( parent->dataChangeOnInsertRemove( )
+                && !parent->mementoCreated( ) )
+               parent->createMemento( );
+         parent->takeChild( info->deletedObject( ) );
+      }
+
+      if( m_firstExecution )
+      {
+         for( it.toLast( ); it.current( ); --it )
+         {
+            parent = it.current( )->parent( );
+            if( parent->mementoCreated( ) )
+               m_dataChanges.append( parent->takeMemento( ) );
+         }
+      }
+
+      QPtrListIterator<PMMemento> mit( m_dataChanges );
+      for( ; mit.current( ); ++mit )
+      {
+         PMObjectChangeListIterator change = mit.current( )->changedObjects( );
+         for( ; change.current( ); ++change )
+            theManager->cmdObjectChanged( change.current( )->object( ),
+                                          change.current( )->mode( ) );
+      }
+      
+      PMObjectListIterator dit( m_linkedDeclares );
+      for( ; dit.current( ); ++dit )
+         theManager->cmdObjectChanged( dit.current( ), PMCData );
+      
+      m_executed = true;
+      m_firstExecution = false;
+   }
+}
+
+void PMDeleteCommand::undo( PMCommandManager* theManager )
+{
+   if( m_executed )
+   {
+      PMDeleteInfoListIterator it( m_infoList );
+      for( ; it.current( ); ++it )
+      {
+         if( it.current( )->prevSibling( ) )
+            it.current( )->parent( )
+               ->insertChildAfter( it.current( )->deletedObject( ),
+                                   it.current( )->prevSibling( ) );
+         else
+            it.current( )->parent( )
+               ->insertChild( it.current( )->deletedObject( ), 0 );
+         theManager->cmdObjectChanged( it.current( )->deletedObject( ), PMCAdd );
+      }
+      
+      PMObjectListIterator lit( m_links );
+      for( ; lit.current( ); ++lit )
+         lit.current( )->linkedObject( )->addLinkedObject( lit.current( ) );
+      PMObjectListIterator dit( m_linkedDeclares );
+      for( ; dit.current( ); ++dit )
+         theManager->cmdObjectChanged( dit.current( ), PMCData );
+      
+      QPtrListIterator<PMMemento> mit( m_dataChanges );
+      for( ; mit.current( ); ++mit )
+      {
+         mit.current( )->originator( )->restoreMemento( mit.current( ) );
+         PMObjectChangeListIterator change = mit.current( )->changedObjects( );
+         for( ; change.current( ); ++change )
+            theManager->cmdObjectChanged( change.current( )->object( ),
+                                          change.current( )->mode( ) );
+      }
+      
+      m_executed = false;
+   }
+}
+
+int PMDeleteCommand::errorFlags( PMPart* )
+{
+   PMDeleteInfo* info;
+   PMDeclare* decl = 0;
+   PMObject* obj;
+   bool insideSelection;
+   bool ok = true;
+   bool error = false;
+   
+   // dictionary of deleted objects
+   QPtrDict<bool> m_deletedObjects( 1009 );
+   m_deletedObjects.setAutoDelete( true );
+   PMDeleteInfoListIterator it( m_infoList );
+   for( ; it.current( ); ++it )
+      m_deletedObjects.insert( it.current( )->deletedObject( ),
+                               new bool( true ) );
+   
+   // declares can only be deleted, if all linked
+   // objects are deleted as well
+
+   info = m_infoList.last( );
+   
+   while( info )
+   {
+      ok = true;
+      if( info->deletedObject( )->isA( "Declare" ) )
+      {
+         decl = ( PMDeclare* ) ( info->deletedObject( ) );
+         PMObjectListIterator links = decl->linkedObjects( );
+         
+         for( ; links.current( ) && ok; ++links )
+         {
+            insideSelection = false;
+            for( obj = links.current( ); obj && !insideSelection;
+                 obj = obj->parent( ) )
+            {
+               if( m_deletedObjects.find( obj ) )
+                  insideSelection = true;
+            }
+
+            if( insideSelection )
+            {
+               bool stop = false;
+               for( obj = links.current( ); obj && !stop; obj = obj->parent( ) )
+               {
+                  if( m_deletedObjects.find( obj ) )
+                     stop = true;
+                  else
+                     m_deletedObjects.insert( obj, new bool( true ) );
+               }
+            }
+            else
+               ok = false;
+         }
+      }
+      
+      if( !ok )
+      {
+         m_errors.prepend( i18n( "The declare \"%1\" can't be removed "
+                                 "because of some remaining links." )
+                           .arg( decl->id( ) ) );
+         
+         PMDeleteInfo* tmp = info;
+         info = m_infoList.prev( );
+         m_deletedObjects.remove( decl );
+         m_infoList.removeRef( tmp );
+         
+         error = true;
+      }
+      else
+         info = m_infoList.prev( );
+   }
+
+   if( error )
+   {
+      if( m_infoList.count( ) == 0 )
+         return PMEError | PMEFatal;
+      else
+         return PMEError;
+   }
+   
+   return PMENone;
+}