org.apache.wicket.markup.head
Class MetaDataHeaderItem

java.lang.Object
  org.apache.wicket.markup.head.HeaderItem
      org.apache.wicket.markup.head.MetaDataHeaderItem

All Implemented Interfaces:

Serializable, IClusterable

Direct Known Subclasses:

HtmlImportHeaderItem

public class MetaDataHeaderItem
extends HeaderItem

HeaderItem for meta informations such as <meta> tags or canonical <link>

Since:

6.17.0

Author:

andrea del bene

See Also:

Serialized Form

Field Summary

static String	LINK_TAG
static String	META_TAG

Constructor Summary

MetaDataHeaderItem(String tagName)
Build a new MetaDataHeaderItem having tagName as tag.

Method Summary

MetaDataHeaderItem	addTagAttribute(String attributeName) Add a minimized tag attribute to the item.
MetaDataHeaderItem	addTagAttribute(String attributeName, Object attributeValue) Add a tag attribute to the item.
boolean	equals(Object o)
static MetaDataHeaderItem	forLinkTag(IModel<String> rel, IModel<String> href) Factory method to create <link> tag.
static MetaDataHeaderItem	forLinkTag(String rel, String href) Factory method to create <link> tag.
static MetaDataHeaderItem	forMetaTag(IModel<String> name, IModel<String> content) Factory method to create <meta> tag.
static MetaDataHeaderItem	forMetaTag(String name, String content) Factory method to create <meta> tag.
String	generateString() Generate the string representation for the current item.
Iterable<?>	getRenderTokens()
int	hashCode()
void	render(Response response) Renders the HeaderItem to the response.

Methods inherited from class org.apache.wicket.markup.head.HeaderItem

getDependencies, getProvidedResources

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Field Detail

META_TAG

public static final String META_TAG

See Also:

Constant Field Values

LINK_TAG

public static final String LINK_TAG

See Also:

Constant Field Values

Constructor Detail

MetaDataHeaderItem

public MetaDataHeaderItem(String tagName)

Build a new MetaDataHeaderItem having tagName as tag.

Parameters:

tagName - the name of the tag

Method Detail

addTagAttribute

public MetaDataHeaderItem addTagAttribute(String attributeName,
                                          Object attributeValue)

Add a tag attribute to the item. If the attribute value is a IModel, the object wrapped inside the model is used as actual value.

Parameters:

attributeName - the attribute name

attributeValue - the attribute value

Returns:

The current item.

addTagAttribute

public MetaDataHeaderItem addTagAttribute(String attributeName)

Add a minimized tag attribute to the item. The attribute has no value and only its name is rendered (for example 'async')

Parameters:

attributeName - the attribute name

Returns:

The current item.

generateString

public String generateString()

Generate the string representation for the current item.

Returns:

The string representation for the current item.

getRenderTokens

public Iterable<?> getRenderTokens()

Specified by:

getRenderTokens in class HeaderItem

Returns:

The tokens this HeaderItem can be identified by. If any of the tokens has already been rendered, this HeaderItem will not be rendered.

render

public void render(Response response)

Description copied from class: HeaderItem

Renders the HeaderItem to the response.

Specified by:

render in class HeaderItem

forMetaTag

public static MetaDataHeaderItem forMetaTag(String name,
                                            String content)

Factory method to create <meta> tag.

Parameters:

name - the 'name' attribute of the tag

content - the 'content' attribute of the tag

Returns:

A new MetaDataHeaderItem

forMetaTag

public static MetaDataHeaderItem forMetaTag(IModel<String> name,
                                            IModel<String> content)

Factory method to create <meta> tag.

Parameters:

name - the 'name' attribute of the tag as String model

content - the 'content' attribute of the tag as String model

Returns:

A new MetaDataHeaderItem

forLinkTag

public static MetaDataHeaderItem forLinkTag(String rel,
                                            String href)

Factory method to create <link> tag.

Parameters:

rel - the 'rel' attribute of the tag

href - the 'href' attribute of the tag

Returns:

A new MetaDataHeaderItem

forLinkTag

public static MetaDataHeaderItem forLinkTag(IModel<String> rel,
                                            IModel<String> href)

Factory method to create <link> tag.

Parameters:

rel - the 'rel' attribute of the tag as String model

href - the 'href' attribute of the tag as String model

Returns:

A new MetaDataHeaderItem

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object