ownership_access.php

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<?php

      /*
      *     This source code is a part of the Ultimix Project. 
      *     It is distributed under BSD license. All other third side source code (like tinyMCE) is distributed under 
      *     it's own license wich could be found from the corresponding files or sources. 
      *     This source code is provided "as is" without any warranties or garanties.
      *
      *     Have a nice day!
      *
      *     @url http://ultimix.sorceforge.net
      *
      *     @author Alexey "gdever" Dodonov
      */

      //TODO: use it somewere, in the gui::context package for example
      //TODO: remove validation from gui::context (filters are enough)

      class ownership_access_1_0_0{

            var                           $Link = false;
            
            var                           $Owners = false;
            
            function                __construct()
            {
                  try
                  {
                        $this->Link = get_package( 'link' , 'last' , __FILE__ );
                  }
                  catch( Exception $e )
                  {
                        $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
                  }
            }

            function                add_owner( $Object1Id , $Object2Id , $Object1Type , $Object2Type )
            {
                  try
                  {
                        $this->Link->create_link( $Object1Id , $Object2Id , $Object1Type , $Object2Type , true );
                  }
                  catch( Exception $e )
                  {
                        $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
                  }
            }
            
            function                delete_owner( $Object1Id , $Object2Id , $Object1Type , $Object2Type )
            {
                  try
                  {
                        $this->Link->delete_link( $Object1Id , $Object2Id , $Object1Type , $Object2Type , true );
                  }
                  catch( Exception $e )
                  {
                        $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
                  }
            }
            
            function                register_owner( $OwnerId , $OwnerType )
            {
                  try
                  {
                        if( $this->Owners === false )
                        {
                              $this->Owners = array();
                        }

                        foreach( $this->Owners as $i => $Owner )
                        {
                              if( $Owner[ 'id' ] == $OwnerId && $Owner[ 'type' ] == $OwnerType )
                              {
                                    return;
                              }
                        }

                        $this->Owners [] = array( 'id' => $OwnerId , 'type' => $OwnerType );
                  }
                  catch( Exception $e )
                  {
                        $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
                  }
            }
            
            function                object_has_owner( $ObjectId , $ObjectType )
            {
                  try
                  {
                        if( $this->Owners === false )
                        {
                              throw( new Exception( "No owners were registered" ) );
                        }

                        foreach( $this->Owners as $i => $Owner )
                        {
                              if( $this->Link->link_exists( $Owner[ 'id' ] , $ObjectId , $Owner[ 'type' ] , $ObjectType ) )
                              {
                                    return( true );
                              }
                        }

                        return( false );
                  }
                  catch( Exception $e )
                  {
                        $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
                  }
            }
            
            function                owner_was_registered( $ObjectId , $ObjectType )
            {
                  try
                  {
                        if( $this->Owners === false )
                        {
                              return( false );
                        }

                        foreach( $this->Owners as $i => $Owner )
                        {
                              if( $Owner[ 'id' ] == $ObjectId && $Owner[ 'type' ] == $ObjectType )
                              {
                                    return( true );
                              }
                        }

                        return( false );
                  }
                  catch( Exception $e )
                  {
                        $a = func_get_args();_throw_exception_object( __METHOD__ , $a , $e );
                  }
            }
      }

?>