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