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<?php
class Sample2 extends TPage
{
private $_data=null;
protected function getData()
{
if($this->_data===null)
$this->loadData();
return $this->_data;
}
protected function loadData()
{
// We use viewstate keep track of data.
// In real applications, data should come from database using an SQL SELECT statement.
// In the following tabular data, field 'id' is the primary key.
// All update and delete operations should come with an 'id' value in order to go through.
if(($this->_data=$this->getViewState('Data',null))===null)
{
$this->_data=array(
array('id'=>'ITN001','name'=>'Motherboard','quantity'=>1,'price'=>100.00,'imported'=>true),
array('id'=>'ITN002','name'=>'CPU','quantity'=>1,'price'=>150.00,'imported'=>true),
array('id'=>'ITN003','name'=>'Harddrive','quantity'=>2,'price'=>80.00,'imported'=>false),
array('id'=>'ITN004','name'=>'Sound card','quantity'=>1,'price'=>40.00,'imported'=>false),
array('id'=>'ITN005','name'=>'Video card','quantity'=>1,'price'=>150.00,'imported'=>true),
array('id'=>'ITN006','name'=>'Keyboard','quantity'=>1,'price'=>20.00,'imported'=>true),
array('id'=>'ITN007','name'=>'Monitor','quantity'=>2,'price'=>300.00,'imported'=>false),
);
$this->saveData();
}
}
protected function saveData()
{
$this->setViewState('Data',$this->_data);
}
protected function updateProduct($id,$name,$quantity,$price,$imported)
{
// In real applications, data should be saved to database using an SQL UPDATE statement
if($this->_data===null)
$this->loadData();
$updateRow=null;
foreach($this->_data as $index=>$row)
if($row['id']===$id)
$updateRow=&$this->_data[$index];
if($updateRow!==null)
{
$updateRow['name']=$name;
$updateRow['quantity']=TPropertyValue::ensureInteger($quantity);
$updateRow['price']=TPropertyValue::ensureFloat($price);
$updateRow['imported']=TPropertyValue::ensureBoolean($imported);
$this->saveData();
}
}
protected function deleteProduct($id)
{
// In real applications, data should be saved to database using an SQL DELETE statement
if($this->_data===null)
$this->loadData();
$deleteIndex=-1;
foreach($this->_data as $index=>$row)
if($row['id']===$id)
$deleteIndex=$index;
if($deleteIndex>=0)
{
unset($this->_data[$deleteIndex]);
$this->saveData();
}
}
public function onLoad($param)
{
parent::onLoad($param);
if(!$this->IsPostBack)
{
$this->DataList->DataSource=$this->Data;
$this->DataList->dataBind();
}
}
public function editItem($sender,$param)
{
$this->DataList->SelectedItemIndex=-1;
$this->DataList->EditItemIndex=$param->Item->ItemIndex;
$this->DataList->DataSource=$this->Data;
$this->DataList->dataBind();
}
public function cancelItem($sender,$param)
{
$this->DataList->SelectedItemIndex=-1;
$this->DataList->EditItemIndex=-1;
$this->DataList->DataSource=$this->Data;
$this->DataList->dataBind();
}
public function updateItem($sender,$param)
{
$item=$param->Item;
$this->updateProduct(
$this->DataList->DataKeys[$item->ItemIndex],
$item->ProductName->Text,
$item->ProductQuantity->Text,
$item->ProductPrice->Text,
$item->ProductImported->Checked);
$this->DataList->EditItemIndex=-1;
$this->DataList->DataSource=$this->Data;
$this->DataList->dataBind();
}
public function deleteItem($sender,$param)
{
$this->deleteProduct($this->DataList->DataKeys[$param->Item->ItemIndex]);
$this->DataList->SelectedItemIndex=-1;
$this->DataList->EditItemIndex=-1;
$this->DataList->DataSource=$this->Data;
$this->DataList->dataBind();
}
public function selectItem($sender,$param)
{
$this->DataList->EditItemIndex=-1;
$this->DataList->DataSource=$this->Data;
$this->DataList->dataBind();
}
}
?>
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