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<?php
namespace Dhtmlx\Connector\Output;
use Dhtmlx\Connector\Data\DataItem;
use Dhtmlx\Connector\Data\GridDataItem;
use \Exception;
class RenderStrategy {
protected $conn = null;
public function __construct($conn) {
$this->conn = $conn;
}
/*! adds mix fields into DataConfig
* @param config
* DataConfig object
* @param mix
* mix structure
*/
protected function mix($config, $mix) {
for ($i = 0; $i < count($mix); $i++) {
if ($config->is_field($mix[$i]['name'])===-1) {
$config->add_field($mix[$i]['name']);
}
}
}
/*! remove mix fields from DataConfig
* @param config
* DataConfig object
* @param mix
* mix structure
*/
protected function unmix($config, $mix) {
for ($i = 0; $i < count($mix); $i++) {
if ($config->is_field($mix[$i]['name'])!==-1) {
$config->remove_field_full($mix[$i]['name']);
}
}
}
/*! adds mix fields in item
* simple mix adds only strings specified by user
* @param mix
* mix structure
* @param data
* array of selected data
*/
protected function simple_mix($mix, $data) {
// get mix details
for ($i = 0; $i < count($mix); $i++)
$data[$mix[$i]["name"]] = is_object($mix[$i]["value"]) ? "" : $mix[$i]["value"];
return $data;
}
/*! adds mix fields in item
* complex mix adds strings specified by user and results of subrequests
* @param mix
* mix structure
* @param data
* array of selected data
*/
protected function complex_mix($mix, $data) {
// get mix details
for ($i = 0; $i < count($mix); $i++) {
$mixname = $mix[$i]["name"];
if ($mix[$i]['filter'] !== false) {
$subconn = $mix[$i]["value"];
$filter = $mix[$i]["filter"];
// setting relationships
$subconn->clear_filter();
foreach ($filter as $k => $v)
if (isset($data[$v]))
$subconn->filter($k, $data[$v], "=");
else
throw new Exception('There was no such data field registered as: '.$k);
$subconn->asString(true);
$data[$mixname]=$subconn->simple_render();
if (is_array($data[$mixname]) && count($data[$mixname]) == 1)
$data[$mixname] = $data[$mixname][0];
} else {
$data[$mixname] = $mix[$i]["value"];
}
}
return $data;
}
/*! render from DB resultset
@param res
DB resultset
process commands, output requested data as XML
*/
public function render_set($res, $name, $dload, $sep, $config, $mix){
$output="";
$index=0;
$conn = $this->conn;
$this->mix($config, $mix);
$conn->event->trigger("beforeRenderSet",$conn,$res,$config);
while($data=$conn->sql->get_next($res)) {
$data = $this->simple_mix($mix, $data);
$data = new $name($data, $config, $index);
if($data->get_id()===false)
$data->set_id($conn->uuid());
$conn->event->trigger("beforeRender", $data);
$output.=$data->to_xml().$sep;
$index++;
}
$this->unmix($config, $mix);
return $output;
}
}
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