Gecko [ ifk.uw.edu.pl ]

Name	Size	Permission
assets	[ DIR ]	drwxr-xr-x
IDataSource.php	507 B	-rw-r--r--
IItemDataRenderer.php	1.34 KB	-rw-r--r--
IListControlAdapter.php	1.22 KB	-rw-r--r--
IRepeatInfoUser.php	1.55 KB	-rw-r--r--
IStyleable.php	774 B	-rw-r--r--
TAccordion.php	16.08 KB	-rw-r--r--
TAccordionView.php	4.45 KB	-rw-r--r--
TAccordionViewCollection.php	1.57 KB	-rw-r--r--
TBaseDataList.php	5.45 KB	-rw-r--r--
TBaseValidator.php	19.79 KB	-rw-r--r--
TBoundColumn.php	7.11 KB	-rw-r--r--
TBulletStyle.php	913 B	-rw-r--r--
TBulletedList.php	12.14 KB	-rw-r--r--
TBulletedListDisplayMode.php	917 B	-rw-r--r--
TBulletedListEventParameter.ph...	993 B	-rw-r--r--
TButton.php	11.42 KB	-rw-r--r--
TButtonColumn.php	8.5 KB	-rw-r--r--
TButtonColumnType.php	791 B	-rw-r--r--
TButtonTag.php	705 B	-rw-r--r--
TButtonType.php	756 B	-rw-r--r--
TCaptcha.php	16.31 KB	-rw-r--r--
TCaptchaValidator.php	4 KB	-rw-r--r--
TCheckBox.php	15.02 KB	-rw-r--r--
TCheckBoxColumn.php	3.68 KB	-rw-r--r--
TCheckBoxItem.php	520 B	-rw-r--r--
TCheckBoxList.php	14.43 KB	-rw-r--r--
TCircleHotSpot.php	1.84 KB	-rw-r--r--
TClientScript.php	4.41 KB	-rw-r--r--
TClientSideValidationSummaryOp...	2.38 KB	-rw-r--r--
TColorPicker.php	6.83 KB	-rw-r--r--
TColorPickerClientSide.php	847 B	-rw-r--r--
TColorPickerMode.php	815 B	-rw-r--r--
TCompareValidator.php	7.5 KB	-rw-r--r--
TCompleteWizardStep.php	960 B	-rw-r--r--
TConditional.php	4.33 KB	-rw-r--r--
TContent.php	1.67 KB	-rw-r--r--
TContentDirection.php	811 B	-rw-r--r--
TContentPlaceHolder.php	1.73 KB	-rw-r--r--
TCustomValidator.php	4.46 KB	-rw-r--r--
TDataBoundControl.php	15.37 KB	-rw-r--r--
TDataGrid.php	48.32 KB	-rw-r--r--
TDataGridColumn.php	17.06 KB	-rw-r--r--
TDataGridColumnCollection.php	1.83 KB	-rw-r--r--
TDataGridCommandEventParameter...	2.06 KB	-rw-r--r--
TDataGridItem.php	3.62 KB	-rw-r--r--
TDataGridItemCollection.php	1.34 KB	-rw-r--r--
TDataGridItemEventParameter.ph...	1.4 KB	-rw-r--r--
TDataGridItemRenderer.php	539 B	-rw-r--r--
TDataGridPageChangedEventParam...	1.84 KB	-rw-r--r--
TDataGridPager.php	1.75 KB	-rw-r--r--
TDataGridPagerButtonType.php	1022 B	-rw-r--r--
TDataGridPagerEventParameter.p...	1.42 KB	-rw-r--r--
TDataGridPagerMode.php	1.04 KB	-rw-r--r--
TDataGridPagerPosition.php	1.16 KB	-rw-r--r--
TDataGridPagerStyle.php	7.44 KB	-rw-r--r--
TDataGridSortCommandEventParam...	1.93 KB	-rw-r--r--
TDataList.php	46.45 KB	-rw-r--r--
TDataListCommandEventParameter...	1.81 KB	-rw-r--r--
TDataListItem.php	3.29 KB	-rw-r--r--
TDataListItemCollection.php	1.06 KB	-rw-r--r--
TDataListItemEventParameter.ph...	1.16 KB	-rw-r--r--
TDataListItemRenderer.php	4.6 KB	-rw-r--r--
TDataRenderer.php	1.11 KB	-rw-r--r--
TDataSize.php	4.22 KB	-rw-r--r--
TDataSourceControl.php	1.36 KB	-rw-r--r--
TDataSourceSelectParameters.ph...	1.51 KB	-rw-r--r--
TDataSourceView.php	2.23 KB	-rw-r--r--
TDataTypeValidator.php	3.89 KB	-rw-r--r--
TDatePicker.php	26.21 KB	-rw-r--r--
TDatePickerClientScript.php	1.22 KB	-rw-r--r--
TDatePickerInputMode.php	746 B	-rw-r--r--
TDatePickerMode.php	1.08 KB	-rw-r--r--
TDatePickerPositionMode.php	766 B	-rw-r--r--
TDisplayStyle.php	994 B	-rw-r--r--
TDropDownList.php	4.58 KB	-rw-r--r--
TDropDownListColumn.php	10.06 KB	-rw-r--r--
TEditCommandColumn.php	7.97 KB	-rw-r--r--
TEmailAddressValidator.php	2.68 KB	-rw-r--r--
TExpression.php	1.42 KB	-rw-r--r--
TFileUpload.php	11.86 KB	-rw-r--r--
TFileUploadItem.php	4.03 KB	-rw-r--r--
TFlushOutput.php	2.25 KB	-rw-r--r--
TFont.php	8.93 KB	-rw-r--r--
TGravatar.php	4.65 KB	-rw-r--r--
THead.php	5 KB	-rw-r--r--
THeader1.php	675 B	-rw-r--r--
THeader2.php	675 B	-rw-r--r--
THeader3.php	675 B	-rw-r--r--
THeader4.php	674 B	-rw-r--r--
THeader5.php	674 B	-rw-r--r--
THeader6.php	674 B	-rw-r--r--
THiddenField.php	5.82 KB	-rw-r--r--
THorizontalAlign.php	921 B	-rw-r--r--
THotSpot.php	8.73 KB	-rw-r--r--
THotSpotCollection.php	1.02 KB	-rw-r--r--
THotSpotMode.php	901 B	-rw-r--r--
THtmlArea.php	12.41 KB	-rw-r--r--
THtmlArea5.php	11.53 KB	-rw-r--r--
THtmlElement.php	1.62 KB	-rw-r--r--
THyperLink.php	7.41 KB	-rw-r--r--
THyperLinkColumn.php	7.61 KB	-rw-r--r--
TImage.php	4.29 KB	-rw-r--r--
TImageButton.php	11.67 KB	-rw-r--r--
TImageClickEventParameter.php	1.52 KB	-rw-r--r--
TImageMap.php	6.86 KB	-rw-r--r--
TImageMapEventParameter.php	1.06 KB	-rw-r--r--
TInlineFrame.php	7.89 KB	-rw-r--r--
TInlineFrameAlign.php	1018 B	-rw-r--r--
TInlineFrameScrollBars.php	917 B	-rw-r--r--
TItemDataRenderer.php	2.17 KB	-rw-r--r--
TJavascriptLogger.php	2.8 KB	-rw-r--r--
TKeyboard.php	5.92 KB	-rw-r--r--
TLabel.php	3.95 KB	-rw-r--r--
TLinkButton.php	10.45 KB	-rw-r--r--
TListBox.php	6.57 KB	-rw-r--r--
TListControl.php	24.23 KB	-rw-r--r--
TListControlValidator.php	5.84 KB	-rw-r--r--
TListItem.php	4.93 KB	-rw-r--r--
TListItemType.php	1.11 KB	-rw-r--r--
TListSelectionMode.php	684 B	-rw-r--r--
TLiteral.php	2.82 KB	-rw-r--r--
TLiteralColumn.php	4.08 KB	-rw-r--r--
TMarkdown.php	1.99 KB	-rw-r--r--
TMetaTag.php	3.53 KB	-rw-r--r--
TMetaTagCollection.php	1.83 KB	-rw-r--r--
TMultiView.php	8.34 KB	-rw-r--r--
TOutputCache.php	15.99 KB	-rw-r--r--
TOutputCacheCalculateKeyEventP...	1.04 KB	-rw-r--r--
TOutputCacheCheckDependencyEve...	1.38 KB	-rw-r--r--
TOutputCacheTextWriterMulti.ph...	975 B	-rw-r--r--
TPageLoadTime.php	1.31 KB	-rw-r--r--
TPager.php	21.73 KB	-rw-r--r--
TPagerButtonType.php	714 B	-rw-r--r--
TPagerMode.php	838 B	-rw-r--r--
TPagerPageChangedEventParamete...	1.54 KB	-rw-r--r--
TPanel.php	6.39 KB	-rw-r--r--
TPanelStyle.php	8.09 KB	-rw-r--r--
TPlaceHolder.php	616 B	-rw-r--r--
TPolygonHotSpot.php	1.11 KB	-rw-r--r--
TRadioButton.php	9.39 KB	-rw-r--r--
TRadioButtonItem.php	533 B	-rw-r--r--
TRadioButtonList.php	2.29 KB	-rw-r--r--
TRangeValidationDataType.php	696 B	-rw-r--r--
TRangeValidator.php	9.76 KB	-rw-r--r--
TRatingList.php	8.75 KB	-rw-r--r--
TReCaptcha.php	11.79 KB	-rw-r--r--
TReCaptcha2.php	10.95 KB	-rw-r--r--
TReCaptcha2Validator.php	3.43 KB	-rw-r--r--
TReCaptchaValidator.php	4.19 KB	-rw-r--r--
TReadOnlyDataSource.php	1.1 KB	-rw-r--r--
TReadOnlyDataSourceView.php	1.01 KB	-rw-r--r--
TRectangleHotSpot.php	2.36 KB	-rw-r--r--
TRegularExpressionValidator.ph...	4.16 KB	-rw-r--r--
TRepeatDirection.php	681 B	-rw-r--r--
TRepeatInfo.php	13.51 KB	-rw-r--r--
TRepeatLayout.php	872 B	-rw-r--r--
TRepeater.php	23.8 KB	-rw-r--r--
TRepeaterCommandEventParameter...	1.81 KB	-rw-r--r--
TRepeaterItem.php	2.83 KB	-rw-r--r--
TRepeaterItemCollection.php	1.07 KB	-rw-r--r--
TRepeaterItemEventParameter.ph...	1.13 KB	-rw-r--r--
TRepeaterItemRenderer.php	1.24 KB	-rw-r--r--
TRequiredFieldValidator.php	4.56 KB	-rw-r--r--
TSafeHtml.php	2.07 KB	-rw-r--r--
TScrollBars.php	953 B	-rw-r--r--
TServerValidateEventParameter....	1.37 KB	-rw-r--r--
TSlider.php	14.93 KB	-rw-r--r--
TSliderClientScript.php	1.78 KB	-rw-r--r--
TSliderDirection.php	749 B	-rw-r--r--
TStatements.php	1.44 KB	-rw-r--r--
TStyle.php	9.84 KB	-rw-r--r--
TStyleSheet.php	3.62 KB	-rw-r--r--
TTabPanel.php	14.67 KB	-rw-r--r--
TTabView.php	4.83 KB	-rw-r--r--
TTabViewCollection.php	1.55 KB	-rw-r--r--
TTable.php	9.63 KB	-rw-r--r--
TTableCaptionAlign.php	862 B	-rw-r--r--
TTableCell.php	5.77 KB	-rw-r--r--
TTableCellCollection.php	1.1 KB	-rw-r--r--
TTableFooterRow.php	882 B	-rw-r--r--
TTableGridLines.php	902 B	-rw-r--r--
TTableHeaderCell.php	2.4 KB	-rw-r--r--
TTableHeaderRow.php	882 B	-rw-r--r--
TTableHeaderScope.php	766 B	-rw-r--r--
TTableItemStyle.php	5.5 KB	-rw-r--r--
TTableRow.php	3.8 KB	-rw-r--r--
TTableRowCollection.php	1.08 KB	-rw-r--r--
TTableRowSection.php	761 B	-rw-r--r--
TTableStyle.php	8.84 KB	-rw-r--r--
TTemplateColumn.php	7.93 KB	-rw-r--r--
TTemplatedWizardStep.php	2.93 KB	-rw-r--r--
TTextAlign.php	608 B	-rw-r--r--
TTextBox.php	19.32 KB	-rw-r--r--
TTextBoxAutoCompleteType.php	1.87 KB	-rw-r--r--
TTextBoxMode.php	2.3 KB	-rw-r--r--
TTextHighlighter.php	6.53 KB	-rw-r--r--
TTextProcessor.php	2.28 KB	-rw-r--r--
TValidationCompareOperator.php	959 B	-rw-r--r--
TValidationDataType.php	749 B	-rw-r--r--
TValidationSummary.php	11.78 KB	-rw-r--r--
TValidationSummaryDisplayMode....	1.09 KB	-rw-r--r--
TValidationSummaryDisplayStyle...	1017 B	-rw-r--r--
TValidatorClientSide.php	2.96 KB	-rw-r--r--
TValidatorDisplayStyle.php	951 B	-rw-r--r--
TVerticalAlign.php	836 B	-rw-r--r--
TView.php	2.23 KB	-rw-r--r--
TViewCollection.php	1.09 KB	-rw-r--r--
TWebControl.php	12.65 KB	-rw-r--r--
TWebControlAdapter.php	1.98 KB	-rw-r--r--
TWebControlDecorator.php	10.94 KB	-rw-r--r--
TWizard.php	41.24 KB	-rw-r--r--
TWizardFinishNavigationTemplat...	1.49 KB	-rw-r--r--
TWizardNavigationButtonStyle.p...	3.89 KB	-rw-r--r--
TWizardNavigationButtonType.ph...	825 B	-rw-r--r--
TWizardNavigationContainer.php	1.85 KB	-rw-r--r--
TWizardNavigationEventParamete...	2.15 KB	-rw-r--r--
TWizardNavigationTemplate.php	2.29 KB	-rw-r--r--
TWizardSideBarListItemTemplate...	907 B	-rw-r--r--
TWizardSideBarTemplate.php	1003 B	-rw-r--r--
TWizardStartNavigationTemplate...	1.21 KB	-rw-r--r--
TWizardStep.php	2.34 KB	-rw-r--r--
TWizardStepCollection.php	1.79 KB	-rw-r--r--
TWizardStepNavigationTemplate....	1.45 KB	-rw-r--r--
TWizardStepType.php	1.01 KB	-rw-r--r--
TXmlTransform.php	5.76 KB	-rw-r--r--

Code Editor : TOutputCache.php

<?php
/**
 * TOutputCache class file
 *
 * @author Qiang Xue <qiang.xue@gmail.com>
 * @link https://github.com/pradosoft/prado
 * @license https://github.com/pradosoft/prado/blob/master/LICENSE
 */

namespace Prado\Web\UI\WebControls;

use Prado\Caching\ICache;
use Prado\Exceptions\TConfigurationException;
use Prado\IO\TTextWriter;
use Prado\Prado;
use Prado\TPropertyValue;
use Prado\Exceptions\TInvalidDataValueException;

/**
 * TOutputCache class.
 *
 * TOutputCache enables caching a portion of a Web page, also known as
 * partial caching. The content being cached can be either static or
 * dynamic.
 *
 * To use TOutputCache, simply enclose the content to be cached
 * within the TOutputCache component tag on a template, e.g.,
 * <code>
 * <com:TOutputCache>
 *   content to be cached
 * </com:TOutputCache>
 * </code>
 * where content to be cached can be static text and/or component tags.
 *
 * The validity of the cached content is determined based on two factors:
 * the {@link setDuration Duration} and the cache dependency.
 * The former specifies the number of seconds that the data can remain
 * valid in cache (defaults to 60s), while the latter specifies conditions
 * that the cached data depends on. If a dependency changes,
 * (e.g. relevant data in DB are updated), the cached data will be invalidated.
 *
 * There are two ways to specify cache dependency. One may write event handlers
 * to respond to the {@link onCheckDependency OnCheckDependency} event and set
 * the event parameter's {@link TOutputCacheCheckDependencyEventParameter::getIsValid IsValid}
 * property to indicate whether the cached data remains valid or not.
 * One can also extend TOutputCache and override its {@link getCacheDependency}
 * function. While the former is easier to use, the latter offers more extensibility.
 *
 * The content fetched from cache may be variated with respect to
 * some parameters. It supports variation with respect to request parameters,
 * which is specified by {@link setVaryByParam VaryByParam} property.
 * If a specified request parameter is different, a different version of
 * cached content is used. This is extremely useful if a page's content
 * may be variated according to some GET parameters.
 * The content being cached may also be variated with user sessions if
 * {@link setVaryBySession VaryBySession} is set true.
 * To variate the cached content by other factors, override {@link calculateCacheKey()} method.
 *
 * Output caches can be nested. An outer cache takes precedence over an
 * inner cache. This means, if the content cached by the inner cache expires
 * or is invalidated, while that by the outer cache not, the outer cached
 * content will be used.
 *
 * Note, TOutputCache is effective only for non-postback page requests
 * and when cache module is enabled.
 *
 * Do not attempt to address child controls of TOutputCache when the cached
 * content is to be used. Use {@link getContentCached ContentCached} property
 * to determine whether the content is cached or not.
 *
 * @author Qiang Xue <qiang.xue@gmail.com>
 * @since 3.1
 */
class TOutputCache extends \Prado\Web\UI\TControl implements \Prado\Web\UI\INamingContainer
{
	public const CACHE_ID_PREFIX = 'prado:outputcache';
	private $_cacheModuleID = '';
	private $_dataCached = false;
	private $_cacheAvailable = false;
	private $_cacheChecked = false;
	private $_cacheKey;
	private $_duration = 60;
	private $_cache;
	private $_contents;
	private $_state;
	private $_actions = [];
	private $_varyByParam = '';
	private $_keyPrefix = '';
	private $_varyBySession = false;
	private $_cachePostBack = false;
	private $_cacheTime = 0;

/**
	 * Returns a value indicating whether body contents are allowed for this control.
	 * This method overrides the parent implementation by checking if cached
	 * content is available or not. If yes, it returns false, otherwise true.
	 */
	public function getAllowChildControls()
	{
		$this->determineCacheability();
		return !$this->_dataCached;
	}

private function determineCacheability()
	{
		if (!$this->_cacheChecked) {
			$this->_cacheChecked = true;
			if ($this->_duration > 0 && ($this->_cachePostBack || !$this->getPage()->getIsPostBack())) {
				if ($this->_cacheModuleID !== '') {
					$this->_cache = $this->getApplication()->getModule($this->_cacheModuleID);
					if (!($this->_cache instanceof ICache)) {
						throw new TConfigurationException('outputcache_cachemoduleid_invalid', $this->_cacheModuleID);
					}
				} else {
					$this->_cache = $this->getApplication()->getCache();
				}
				if ($this->_cache !== null) {
					$this->_cacheAvailable = true;
					$data = $this->_cache->get($this->getCacheKey());
					if (is_array($data)) {
						$param = new TOutputCacheCheckDependencyEventParameter();
						$param->setCacheTime($data[3] ?? 0);
						$this->onCheckDependency($param);
						$this->_dataCached = $param->getIsValid();
					} else {
						$this->_dataCached = false;
					}
					if ($this->_dataCached) {
						[$this->_contents, $this->_state, $this->_actions, $this->_cacheTime] = $data;
					}
				}
			}
		}
	}

/**
	 * Performs the Init step for the control and all its child controls.
	 * This method overrides the parent implementation by setting up
	 * the stack of the output cache in the page.
	 * Only framework developers should use this method.
	 * @param \Prado\Web\UI\TControl $namingContainer the naming container control
	 */
	protected function initRecursive($namingContainer = null)
	{
		if ($this->_cacheAvailable && !$this->_dataCached) {
			$stack = $this->getPage()->getCachingStack();
			$stack->push($this);
			parent::initRecursive($namingContainer);
			$stack->pop();
		} else {
			parent::initRecursive($namingContainer);
		}
	}

/**
	 * Performs the Load step for the control and all its child controls.
	 * This method overrides the parent implementation by setting up
	 * the stack of the output cache in the page. If the data is restored
	 * from cache, it also recovers the actions associated with the cached data.
	 * Only framework developers should use this method.
	 */
	protected function loadRecursive()
	{
		if ($this->_cacheAvailable && !$this->_dataCached) {
			$stack = $this->getPage()->getCachingStack();
			$stack->push($this);
			parent::loadRecursive();
			$stack->pop();
		} else {
			if ($this->_dataCached) {
				$this->performActions();
			}
			parent::loadRecursive();
		}
	}

private function performActions()
	{
		$page = $this->getPage();
		$cs = $page->getClientScript();
		foreach ($this->_actions as $action) {
			if ($action[0] === 'Page.ClientScript') {
				call_user_func_array([$cs, $action[1]], $action[2]);
			} elseif ($action[0] === 'Page') {
				call_user_func_array([$page, $action[1]], $action[2]);
			} else {
				call_user_func_array([$this->getSubProperty($action[0]), $action[1]], $action[2]);
			}
		}
	}

/**
	 * Performs the PreRender step for the control and all its child controls.
	 * This method overrides the parent implementation by setting up
	 * the stack of the output cache in the page.
	 * Only framework developers should use this method.
	 */
	protected function preRenderRecursive()
	{
		if ($this->_cacheAvailable && !$this->_dataCached) {
			$stack = $this->getPage()->getCachingStack();
			$stack->push($this);
			parent::preRenderRecursive();
			$stack->pop();
		} else {
			parent::preRenderRecursive();
		}
	}

/**
	 * Loads state (viewstate and controlstate) into a control and its children.
	 * This method overrides the parent implementation by loading
	 * cached state if available.
	 * This method should only be used by framework developers.
	 * @param array $state the collection of the state
	 * @param bool $needViewState whether the viewstate should be loaded
	 */
	protected function loadStateRecursive(&$state, $needViewState = true)
	{
		parent::loadStateRecursive($state, $needViewState);
	}

/**
	 * Saves all control state (viewstate and controlstate) as a collection.
	 * This method overrides the parent implementation by saving state
	 * into cache if needed.
	 * This method should only be used by framework developers.
	 * @param bool $needViewState whether the viewstate should be saved
	 * @return array the collection of the control state (including its children's state).
	 */
	protected function &saveStateRecursive($needViewState = true)
	{
		if ($this->_dataCached) {
			return $this->_state;
		} else {
			$this->_state = parent::saveStateRecursive($needViewState);
			return $this->_state;
		}
	}

/**
	 * Registers an action associated with the content being cached.
	 * The registered action will be replayed if the content stored
	 * in the cache is served to end-users.
	 * @param string $context context of the action method. This is a property-path
	 * referring to the context object (e.g. Page, Page.ClientScript)
	 * @param string $funcName method name of the context object
	 * @param array $funcParams list of parameters to be passed to the action method
	 */
	public function registerAction($context, $funcName, $funcParams)
	{
		$this->_actions[] = [$context, $funcName, $funcParams];
	}

public function getCacheKey()
	{
		if ($this->_cacheKey === null) {
			$this->_cacheKey = $this->calculateCacheKey();
		}
		return $this->_cacheKey;
	}

/**
	 * Calculates the cache key.
	 * The key is calculated based on the unique ID of this control
	 * and the request parameters specified via {@link setVaryByParam VaryByParam}.
	 * If {@link getVaryBySession VaryBySession} is true, the session ID
	 * will also participate in the key calculation.
	 * This method may be overriden to support other variations in
	 * the calculated cache key.
	 * @return string cache key
	 */
	protected function calculateCacheKey()
	{
		$key = $this->getBaseCacheKey();
		if ($this->_varyBySession) {
			$key .= $this->getSession()->getSessionID();
		}
		if ($this->_varyByParam !== '') {
			$params = [];
			$request = $this->getRequest();
			foreach (explode(',', $this->_varyByParam) as $name) {
				$name = trim($name);
				$params[$name] = $request->itemAt($name);
			}
			$key .= serialize($params);
		}
		$param = new TOutputCacheCalculateKeyEventParameter();
		$this->onCalculateKey($param);
		$key .= $param->getCacheKey();
		return $key;
	}

/**
	 * @return string basic cache key without variations
	 */
	protected function getBaseCacheKey()
	{
		return self::CACHE_ID_PREFIX . $this->_keyPrefix . $this->getPage()->getPagePath() . $this->getUniqueID();
	}

/**
	 * @return string the ID of the cache module. Defaults to '', meaning the primary cache module is used.
	 */
	public function getCacheModuleID()
	{
		return $this->_cacheModuleID;
	}

/**
	 * @param string $value the ID of the cache module. If empty, the primary cache module will be used.
	 */
	public function setCacheModuleID($value)
	{
		$this->_cacheModuleID = $value;
	}

/**
	 * Sets the prefix of the cache key.
	 * This method is used internally by {@link TTemplate}.
	 * @param string $value key prefix
	 */
	public function setCacheKeyPrefix($value)
	{
		$this->_keyPrefix = $value;
	}

/**
	 * @return int the timestamp of the cached content. This is only valid if the content is being cached.
	 * @since 3.1.1
	 */
	public function getCacheTime()
	{
		return $this->_cacheTime;
	}

/**
	 * Returns the dependency of the data to be cached.
	 * The default implementation simply returns null, meaning no specific dependency.
	 * This method may be overriden to associate the data to be cached
	 * with additional dependencies.
	 * @return \Prado\Caching\ICacheDependency
	 */
	protected function getCacheDependency()
	{
		return null;
	}

/**
	 * @return bool whether content enclosed is cached or not
	 */
	public function getContentCached()
	{
		return $this->_dataCached;
	}

/**
	 * @return int number of seconds that the data can remain in cache. Defaults to 60 seconds.
	 * Note, if cache dependency changes or cache space is limited,
	 * the data may be purged out of cache earlier.
	 */
	public function getDuration()
	{
		return $this->_duration;
	}

/**
	 * @param int $value number of seconds that the data can remain in cache. If 0, it means data is not cached.
	 * @throws TInvalidDataValueException if the value is smaller than 0.
	 */
	public function setDuration($value)
	{
		if (($value = TPropertyValue::ensureInteger($value)) < 0) {
			throw new TInvalidDataValueException('outputcache_duration_invalid', get_class($this));
		}
		$this->_duration = $value;
	}

/**
	 * @return string a semicolon-separated list of strings used to vary the output cache. Defaults to ''.
	 */
	public function getVaryByParam()
	{
		return $this->_varyByParam;
	}

/**
	 * Sets the names of the request parameters that should be used in calculating the cache key.
	 * The names should be concatenated by semicolons.
	 * By setting this value, the output cache will use different cached data
	 * for each different set of request parameter values.
	 * @param string $value a semicolon-separated list of strings used to vary the output cache.
	 */
	public function setVaryByParam($value)
	{
		$this->_varyByParam = trim($value);
	}

/**
	 * @return bool whether the content being cached should be differentiated according to user sessions. Defaults to false.
	 */
	public function getVaryBySession()
	{
		return $this->_varyBySession;
	}

/**
	 * @param bool $value whether the content being cached should be differentiated according to user sessions.
	 */
	public function setVaryBySession($value)
	{
		$this->_varyBySession = TPropertyValue::ensureBoolean($value);
	}

/**
	 * @return bool whether cached output will be used on postback requests. Defaults to false.
	 */
	public function getCachingPostBack()
	{
		return $this->_cachePostBack;
	}

/**
	 * Sets a value indicating whether cached output will be used on postback requests.
	 * By default, this is disabled. Be very cautious when enabling it.
	 * If the cached content including interactive user controls such as
	 * TTextBox, TDropDownList, your page may fail to render on postbacks.
	 * @param bool $value whether cached output will be used on postback requests.
	 */
	public function setCachingPostBack($value)
	{
		$this->_cachePostBack = TPropertyValue::ensureBoolean($value);
	}

/**
	 * This event is raised when the output cache is checking cache dependency.
	 * An event handler may be written to check customized dependency conditions.
	 * The checking result should be saved by setting {@link TOutputCacheCheckDependencyEventParameter::setIsValid IsValid}
	 * property of the event parameter (which defaults to true).
	 * @param TOutputCacheCheckDependencyEventParameter $param event parameter
	 */
	public function onCheckDependency($param)
	{
		$this->raiseEvent('OnCheckDependency', $this, $param);
	}

/**
	 * This event is raised when the output cache is calculating cache key.
	 * By varying cache keys, one can obtain different versions of cached content.
	 * An event handler may be written to add variety of the key calculation.
	 * The value set in {@link TOutputCacheCalculateKeyEventParameter::setCacheKey CacheKey} of
	 * this event parameter will be appended to the default key calculation scheme.
	 * @param TOutputCacheCalculateKeyEventParameter $param event parameter
	 */
	public function onCalculateKey($param)
	{
		$this->raiseEvent('OnCalculateKey', $this, $param);
	}

/**
	 * Renders the output cache control.
	 * This method overrides the parent implementation by capturing the output
	 * from its child controls and saving it into cache, if output cache is needed.
	 * @param \Prado\Web\UI\THtmlWriter $writer
	 */
	public function render($writer)
	{
		if ($this->_dataCached) {
			$writer->write($this->_contents);
		} elseif ($this->_cacheAvailable) {
			$textwriter = new TTextWriter();
			$multiwriter = new TOutputCacheTextWriterMulti([$writer->getWriter(), $textwriter]);
			$htmlWriter = Prado::createComponent($this->GetResponse()->getHtmlWriterType(), $multiwriter);

$stack = $this->getPage()->getCachingStack();
			$stack->push($this);
			parent::render($htmlWriter);
			$stack->pop();

$content = $textwriter->flush();
			$data = [$content, $this->_state, $this->_actions, time()];
			$this->_cache->set($this->getCacheKey(), $data, $this->getDuration(), $this->getCacheDependency());
		} else {
			parent::render($writer);
		}
	}
}

${this.title}

Code Editor : TOutputCache.php