[add] common-tree connectors

1 files changed, 179 insertions, 7 deletions

diff --git a/codebase/data_connector.php b/codebase/data_connector.php
index e6b5420..2789224 100644
--- a/codebase/data_connector.php
+++ b/codebase/data_connector.php
@@ -57,13 +57,16 @@ class CommonDataItem extends DataItem{
 	*/
 	function to_xml(){
 		if ($this->skip) return "";
-		
-		$str="<item id='".$this->get_id()."' >";
-		for ($i=0; $i<sizeof($this->config->text); $i++){
-			$extra = $this->config->text[$i]["name"];
-			$str.="<".$extra."><![CDATA[".$this->data[$extra]."]]></".$extra.">";
+		return $this->to_xml_start().$this->to_xml_end();
+	}
+
+	function to_xml_start(){
+		$str="<item id='".$this->get_id()."' ";
+		for ($i=0; $i < sizeof($this->config->text); $i++){ 
+			$name=$this->config->text[$i]["name"];
+			$str.=" ".$name."='".$this->xmlentities($this->data[$name])."'";
 		}
-		return $str."</item>";
+		return $str.">";
 	}
 }
 
@@ -170,4 +173,173 @@ class JSONCommonDataItem extends DataItem{
 	}
 }
 
-?>
\ No newline at end of file
+class TreeCommonDataItem extends CommonDataItem{
+	private $kids=-1;
+
+	function to_xml_start(){
+		$str="<item id='".$this->get_id()."' ";
+		for ($i=0; $i < sizeof($this->config->text); $i++){ 
+			$name=$this->config->text[$i]["name"];
+			$str.=" ".$name."='".$this->xmlentities($this->data[$name])."'";
+		}
+		
+		if ($this->kids === true)
+			$str .=" dhx_kids='1'";
+		
+		return $str.">";
+	}
+
+	function has_kids(){
+		return $this->kids;
+	}
+
+	function set_kids($value){
+		$this->kids=$value;
+	}
+}
+
+
+class TreeDataConnector extends DataConnector{
+	public function __construct($res,$type=false,$item_type=false,$data_type=false){
+		if (!$item_type) $item_type="TreeCommonDataItem";
+		if (!$data_type) $data_type="CommonDataProcessor";
+		parent::__construct($res,$type,$item_type,$data_type);
+
+		$this->event->attach("afterInsert",array($this,"parent_id_correction_a"));
+		$this->event->attach("beforeProcessing",array($this,"parent_id_correction_b"));
+	}
+
+	protected function xml_start(){
+		return "<data parent='".$this->request->get_relation()."'>";
+	}	
+
+	/*! store info about ID changes during insert operation
+		@param dataAction 
+			data action object during insert operation
+	*/
+	public function parent_id_correction_a($dataAction){
+		$this->id_swap[$dataAction->get_id()]=$dataAction->get_new_id();
+	}
+	/*! update ID if it was affected by previous operation
+		@param dataAction 
+			data action object, before any processing operation
+	*/
+	public function parent_id_correction_b($dataAction){
+		$relation = $this->config->relation_id["db_name"];
+		$value = $dataAction->get_value($relation);
+		
+		if (array_key_exists($value,$this->id_swap))
+			$dataAction->set_value($relation,$this->id_swap[$value]);
+	}
+
+	//parse GET scoope, all operations with incoming request must be done here
+	protected function parse_request(){
+		parent::parse_request();
+
+		if (isset($_GET["parent"]))
+			$this->request->set_relation($_GET["parent"]);
+		else
+			$this->request->set_relation("0");
+	}
+
+	protected function render_set($res){
+		$output="";
+		$index=0;
+		while ($data=$this->sql->get_next($res)){
+			$data = new $this->names["item_class"]($data,$this->config,$index);
+			$this->event->trigger("beforeRender",$data);
+		//there is no info about child elements, 
+		//if we are using dyn. loading - assume that it has,
+		//in normal mode just exec sub-render routine			
+			if ($data->has_kids()===-1 && $this->dload)
+					$data->set_kids(true);
+			$output.=$data->to_xml_start();
+			if ($data->has_kids()===-1 || ( $data->has_kids()==true && !$this->dload)){
+				$sub_request = new DataRequestConfig($this->request);
+				$sub_request->set_relation($data->get_id());
+				$output.=$this->render_set($this->sql->select($sub_request));
+			}
+			$output.=$data->to_xml_end();
+			$index++;
+		}
+		return $output;
+	}
+
+}
+
+
+class JSONTreeDataConnector extends TreeDataConnector{
+
+	public function __construct($res,$type=false,$item_type=false,$data_type=false){
+		if (!$item_type) $item_type="JSONTreeCommonDataItem";
+		if (!$data_type) $data_type="CommonDataProcessor";
+		parent::__construct($res,$type,$item_type,$data_type);
+
+		$this->event->attach("afterInsert",array($this,"parent_id_correction_a"));
+		$this->event->attach("beforeProcessing",array($this,"parent_id_correction_b"));
+	}
+
+	protected function render_set($res){
+		$output=array();
+		$index=0;
+		while ($data=$this->sql->get_next($res)){
+			$data = new $this->names["item_class"]($data,$this->config,$index);
+			$this->event->trigger("beforeRender",$data);
+		//there is no info about child elements, 
+		//if we are using dyn. loading - assume that it has,
+		//in normal mode just exec sub-render routine			
+			if ($data->has_kids()===-1 && $this->dload)
+					$data->set_kids(true);
+			$record = &$data->to_xml_start();
+			if ($data->has_kids()===-1 || ( $data->has_kids()==true && !$this->dload)){
+				$sub_request = new DataRequestConfig($this->request);
+				$sub_request->set_relation($data->get_id());
+				$temp = &$this->render_set($this->sql->select($sub_request));
+				if (sizeof($temp))
+					$record["data"] = $temp;
+			}
+			$output[] = $record;
+			$index++;
+		}
+		return $output;
+	}	
+
+	protected function output_as_xml($res){
+		$data = array();
+		$data["parent"] = $this->request->get_relation();
+		$data["data"] = $this->render_set($res);
+
+		$out = new OutputWriter(json_encode($data), "");
+		$out->set_type("json");
+		$this->event->trigger("beforeOutput", $this, $out);
+		$out->output("", true, $this->encoding);
+	}
+
+}
+
+
+class JSONTreeCommonDataItem extends TreeCommonDataItem{
+	/*! return self as XML string
+	*/
+	function to_xml_start(){
+		if ($this->skip) return "";
+		
+		$data = array( "id" => $this->get_id() );
+		for ($i=0; $i<sizeof($this->config->text); $i++){
+			$extra = $this->config->text[$i]["name"];
+			$data[$extra]=$this->data[$extra];
+		}
+		if ($this->kids === true)
+			$data["dhx_kids"] = 1;
+
+		return $data;
+	}
+
+	function to_xml_end(){
+		return "";
+	}
+}
+
+
+?>
+