source: branches/1.2/workflow/inc/engine/class.ajax_config.inc.php @ 1349

<?php
  /**
   * Realiza operações com os dados de configuração do workflow 
   * 
   * @author  viani
   * @version 1.0
   * @license http://www.gnu.org/copyleft/gpl.html GPL
   * @package Galaxia
   */ 
class ajax_config
{       
        /**             
        * @var object $db database
        * @access public
        */
        var $db;
        /**             
        * @var string $appname Application (module) to config
        * @access public
        */
        var $appname;
        /**             
        * @var array $config_data Actual config-data
        * @access public
        */
        var $config_data;       
        /**             
        * @var array $read_data Config-data as read from db
        * @access public
        */
        var $read_data;         

        /**
        * Set appname and db for ajax config
        * 
        * @param string $appname Which application to config. Default workflow.
        * @return void
        * @access public
        */
        function ajax_config($appname = '')
        {
                if (! $appname)
                {
                        $appname = 'workflow';
                }

                $this->db      = &$GLOBALS['workflow']['workflowObjects']->getDBExpresso();
                $this->appname = $appname;
        }

        /**
        * Reads the whole repository for $this->appname, appname has to be set via the constructor
        * 
        * @return array the whole config-array for that app
        * @access public
        */
        function read_repository()
        {
                $this->config_data = array();

                $this->db->query("select * from phpgw_config where config_app='" . $this->appname . "'",__LINE__,__FILE__);
                while ($this->db->next_record())                        
                {
                        $test = @unserialize($this->db->f('config_value'));
                        if($test)
                        {
                                $this->config_data[$this->db->f('config_name')] = $test;
                        }
                        else
                        {
                                $this->config_data[$this->db->f('config_name')] = $this->db->f('config_value');
                        }
                }
                return $this->read_data = $this->config_data;
        }

        /** 
        * Updates the whole repository for $this->appname, you have to call read_repository() before (!)
        * @access public        
        * @return void
        */
        function save_repository()
        {
                if (is_array($this->config_data))
                {
                        $this->db->lock(array('phpgw_config','phpgw_app_sessions'));
                        if($this->appname == 'phpgwapi')
                        {
                                $this->db->query("delete from phpgw_app_sessions where sessionid = '0' and loginid = '0' and app = '".$this->appname."' and location = 'config'",__LINE__,__FILE__);
                        }
                        foreach($this->config_data as $name => $value)
                        {
                                $this->save_value($name,$value);
                        }
                        foreach($this->read_data as $name => $value)
                        {
                                if (!isset($this->config_data[$name]))  // has been deleted
                                {
                                        $this->db->query("DELETE FROM phpgw_config WHERE config_app='$this->appname' AND config_name='$name'",__LINE__,__FILE__);
                                }
                        }
                        $this->db->unlock();
                }
                $this->read_data = $this->config_data;
        }

        /**
        * Updates or insert a single config-value
        * 
        * @param string $name name of the config-value
        * @param mixed $value content
        * @param string $app app-name, defaults to $this->appname set via the constructor
        * @return array
        * @access public
        */
        function save_value($name,$value,$app=False)
        {
                //echo "<p>config::save_value('$name','".print_r($value,True)."','$app')</p>\n";
                if (!$app || $app == $this->appname)
                {
                        $app = $this->appname;
                        $this->config_data[$name] = $value;
                }
                $name = $this->db->db_addslashes($name);

                if ($app == $this->appname && $this->read_data[$name] == $value)
                {
                        return True;    // no change ==> exit
                }
                $this->db->query($sql="select * from phpgw_config where config_app='$app' AND config_name='$name'",__LINE__,__FILE__);
                if ($this->db->next_record())
                {
                        $value_read = @unserialize($this->db->f('config_value'));
                        if (!$value_read)
                        {
                                $value_read = $this->db->f('config_value');
                        }
                        if ($value_read == $value)
                        {
                                return True;    // no change ==> exit
                        }
                        $update = True;
                }
                //echo "<p>config::save_value('$name','".print_r($value,True)."','$app')</p>\n";

                if(is_array($value))
                {
                        $value = serialize($value);
                }
                $value = $this->db->db_addslashes($value);

                $query = $update ? "UPDATE phpgw_config SET config_value='$value' WHERE config_app='$app' AND config_name='$name'" :
                                "INSERT INTO phpgw_config (config_app,config_name,config_value) VALUES ('$app','$name','$value')";

                return $this->db->query($query,__LINE__,__FILE__);
        }

        /**
        * Deletes the whole repository for $this->appname, appname has to be set via the constructor
        * 
        * @access public
        * @return void          
        */      
        function delete_repository()
        {
                $this->db->query("delete from phpgw_config where config_app='" . $this->appname . "'",__LINE__,__FILE__);
        }

        /**
        * Deletes a single value from the repository, you need to call save_repository after
        * 
        * @param string $variable_name name of the config
        * @return void
        * @access public
        */
        function delete_value($variable_name)
        {
                unset($this->config_data[$variable_name]);
        }
        /**
        * Sets a single value in the repository, you need to call save_repository after
        * 
        * @param string $variable_name name of the config
        * @param mixed $variable_data the content
        * @return void
        * @access public
        */
        function value($variable_name,$variable_data)
        {
                $this->config_data[$variable_name] = $variable_data;
        }
        
}
?>