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Packages: default System System.Caching System.Collections System.Data System.Data.ActiveRecord System.Data.ActiveRecord.Relations System.Data.ActiveRecord.Scaffold System.Data.ActiveReecord.Scaffold.InputBuilder System.Data.Commom.Sqlite System.Data.Common System.Data.Common.Mssql System.Data.Common.Mysql System.Data.Common.Oracle System.Data.Common.Pgsql System.Data.Common.Sqlite System.Data.DataGateway System.Data.SqlMap System.Data.SqlMap.Configuration System.Data.SqlMap.Statements System.Exceptions System.I18N System.IO System.Security System.Util System.Web System.Web.Services System.Web.UI System.Web.UI.ActiveControls System.Web.UI.WebControls System.Web.UI.WebControls.assets System.Xml Classes: IBroadcastEventReceiver IButtonControl INamingContainer IPageStatePersister IPostBackDataHandler IPostBackEventHandler ISurroundable ITemplate ITheme IValidatable IValidator TBroadcastEventParameter TCachePageStatePersister TClientScriptManager TClientSideOptions TCommandEventParameter TCompositeControl TCompositeLiteral TControl TControlAdapter TControlCollection TEmptyControlCollection TForm THead THtmlWriter TPage TPageStateFormatter TPageStatePersister TSessionPageStatePersister TTemplate TTemplateControl TTemplateManager TTextProcessor TTheme TThemeManager |
Keyword
# Class THead
    TComponent
       |
       --TApplicationComponent
          |
          --TControl
             |
             --THead
THead class THead displays a head element on a page. It displays the content enclosed in its body and the page title set by the Title property. In addition, stylesheets and JavaScripts registered via TClientScriptManager::registerStyleSheet, TClientScriptManager::registerStyleSheetFile TClientScriptManager::registerHeadJavaScript, and TClientScriptManager::registerHeadJavaScriptFile will also be displayed in the head. THead also manages and displays meta tags through its MetaTags property. You can add a meta object to the collection in code dynamically, or add it in template using the following syntax,

     <com:THead>
       <com:TMetaTag HttpEquiv="Pragma" Content="no-cache" />
       <com:TMetaTag Name="keywords" Content="Prado" />
     </com:THead>
Note, TPage has a property TPage::getHead that refers to the THead control currently on the page. A page can have at most once THead control. Although not required, it is recommended to place a THead on your page. Without a THead on the page, stylesheets and javascripts in the current page theme will not be rendered. Since: 3.0 Author: Marcus Nyeholt <tanus@users.sourceforge.net> and Qiang Xue <qiang.xue@gmail.com>
Constants Inherited From TControl
AUTOMATIC_ID_PREFIX, CLIENT_ID_SEPARATOR, CS_CHILD_INITIALIZED, CS_CONSTRUCTED, CS_INITIALIZED, CS_LOADED, CS_PRERENDERED, CS_STATE_LOADED, ID_FORMAT, ID_SEPARATOR, IS_CHILD_CREATED, IS_CREATING_CHILD, IS_DISABLE_THEMING, IS_DISABLE_VIEWSTATE, IS_ID_SET, IS_SKIN_APPLIED, IS_STYLESHEET_APPLIED, RF_ADAPTER, RF_AUTO_BINDINGS, RF_CHILD_STATE, RF_CONTROLS, RF_CONTROLSTATE, RF_DATA_BINDINGS, RF_EVENTS, RF_NAMED_CONTROLS, RF_NAMED_CONTROLS_ID, RF_NAMED_OBJECTS, RF_SKIN_ID,
Method Summary
void | addParsedObject ( string|TComponent $object) Processes an object that is created during parsing template.
string | getBaseUrl ()
TMetaTagCollection | getMetaTags ()
string | getShortcutIcon ()
string | getTitle ()
void | onInit ( TEventParameter $param) Registers the head control with the current page.
void | render ( THtmlWriter $writer) Renders the head control.
void | setBaseUrl ( string $url)
void | setShortcutIcon ( string $url)
void | setTitle ( string $value) Sets the page title.
Methods Inherited From TControl
TControl::addedControl(), TControl::addParsedObject(), TControl::addToPostDataLoader(), TControl::applyStyleSheetSkin(), TControl::autoBindProperty(), TControl::autoDataBindProperties(), TControl::bindProperty(), TControl::broadcastEvent(), TControl::bubbleEvent(), TControl::clearChildState(), TControl::clearControlState(), TControl::clearNamingContainer(), TControl::clearViewState(), TControl::convertUniqueIdToClientId(), TControl::createChildControls(), TControl::createControlCollection(), TControl::dataBind(), TControl::dataBindChildren(), TControl::dataBindProperties(), TControl::ensureChildControls(), TControl::findControl(), TControl::findControlsByID(), TControl::findControlsByType(), TControl::focus(), TControl::getAdapter(), TControl::getAllowChildControls(), TControl::getAttribute(), TControl::getAttributes(), TControl::getChildControlsCreated(), TControl::getClientID(), TControl::getControls(), TControl::getControlStage(), TControl::getControlState(), TControl::getCustomData(), TControl::getEnabled(), TControl::getEnableTheming(), TControl::getEnableViewState(), TControl::getHasAdapter(), TControl::getHasAttributes(), TControl::getHasChildInitialized(), TControl::getHasControls(), TControl::getHasInitialized(), TControl::getHasLoaded(), TControl::getHasLoadedPostData(), TControl::getHasPreRendered(), TControl::getID(), TControl::getNamingContainer(), TControl::getPage(), TControl::getParent(), TControl::getRegisteredObject(), TControl::getSkinID(), TControl::getSourceTemplateControl(), TControl::getTemplateControl(), TControl::getUniqueID(), TControl::getViewState(), TControl::getVisible(), TControl::hasAttribute(), TControl::initRecursive(), TControl::isDescendentOf(), TControl::isObjectRegistered(), TControl::loadRecursive(), TControl::loadState(), TControl::loadStateRecursive(), TControl::onDataBinding(), TControl::onInit(), TControl::onLoad(), TControl::onPreRender(), TControl::onUnload(), TControl::preRenderRecursive(), TControl::raiseBubbleEvent(), TControl::registerObject(), TControl::removeAttribute(), TControl::removedControl(), TControl::render(), TControl::renderChildren(), TControl::renderControl(), TControl::saveState(), TControl::saveStateRecursive(), TControl::setAdapter(), TControl::setAttribute(), TControl::setChildControlsCreated(), TControl::setControlStage(), TControl::setControlState(), TControl::setCustomData(), TControl::setEnabled(), TControl::setEnableTheming(), TControl::setEnableViewState(), TControl::setID(), TControl::setPage(), TControl::setSkinID(), TControl::setTemplateControl(), TControl::setViewState(), TControl::setVisible(), TControl::trackViewState(), TControl::traverseChildControls(), TControl::unbindProperty(), TControl::unloadRecursive(), TControl::unregisterObject(), TControl::__get()
Methods Inherited From TApplicationComponent
TApplicationComponent::getApplication(), TApplicationComponent::getRequest(), TApplicationComponent::getResponse(), TApplicationComponent::getService(), TApplicationComponent::getSession(), TApplicationComponent::getUser(), TApplicationComponent::publishAsset(), TApplicationComponent::publishFilePath()
Methods Inherited From TComponent
TComponent::addParsedObject(), TComponent::attachEventHandler(), TComponent::canGetProperty(), TComponent::canSetProperty(), TComponent::createdOnTemplate(), TComponent::detachEventHandler(), TComponent::evaluateExpression(), TComponent::evaluateStatements(), TComponent::getEventHandlers(), TComponent::getSubProperty(), TComponent::hasEvent(), TComponent::hasEventHandler(), TComponent::hasProperty(), TComponent::raiseEvent(), TComponent::setSubProperty(), TComponent::__get(), TComponent::__set()
Constant Summary
Method Details
## addParsedObject
public void addParsedObject | (string|TComponent $object )
Processes an object that is created during parsing template. This method adds TMetaTag components into the MetaTags collection of the head control.
Input
string|TComponent | $object | text string or component parsed and instantiated in template
Output
Exception
## getBaseUrl
public string getBaseUrl | ()
Output
string | base URL of the page. This URL is rendered as the 'href' attribute of <base> tag. Defaults to ''.
Exception
## getMetaTags
public TMetaTagCollection getMetaTags | ()
Output
TMetaTagCollection | meta tag collection
Exception
## getShortcutIcon
public string getShortcutIcon | ()
Output
string | the URL for the shortcut icon of the page. Defaults to ''.
Exception
## getTitle
public string getTitle | ()
Output
string | the page title.
Exception
## onInit
public void onInit | (TEventParameter $param )
Registers the head control with the current page. This method is invoked when the control enters 'Init' stage. The method raises 'Init' event. If you override this method, be sure to call the parent implementation so that the event handlers can be invoked.
Input
TEventParameter | $param | event parameter to be passed to the event handlers
Output
Exception
## render
public void render | (THtmlWriter $writer )
Renders the head control.
Input
THtmlWriter | $writer | the writer for rendering purpose.
Output
Exception
## setBaseUrl
public void setBaseUrl | (string $url )
Input
string | $url | base URL of the page. This URL is rendered as the 'href' attribute of <base> tag.
Output
Exception
## setShortcutIcon
public void setShortcutIcon | (string $url )
Input
string | $url | the URL for the shortcut icon of the page.
Output
Exception
## setTitle
public void setTitle | (string $value )
Sets the page title. This title will be rendered only if the TPage::getTitle property of the page is empty.
Input
string | $value | the page title.
Output
Exception