org.apache.wicket.markup

Class ComponentTag

java.lang.Object

org.apache.wicket.markup.MarkupElement

org.apache.wicket.markup.ComponentTag

Direct Known Subclasses:

WicketTag

public class ComponentTag
extends MarkupElement

A subclass of MarkupElement which represents a "significant" markup tag, such as a component open tag. Insignificant markup tags (those which are merely concerned with markup formatting operations and do not denote components or component nesting) are coalesced into instances of RawMarkup (also a subclass of MarkupElement).

Author:

Jonathan Locke

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	ComponentTag.IAutoComponentFactory Factory that creates component during markup root container's initialization.

Field Summary

Fields

Modifier and Type	Field and Description
static int	CONTAINS_WICKET_ID If true, the current tag contains a child or a descendant with the "wicket:id" attribute
static int	RENDER_RAW Render the tag as RawMarkup even if no Component can be found
protected XmlTag	xmlTag The underlying xml tag

Constructor Summary

Constructors

Constructor and Description
ComponentTag(ComponentTag tag) Constructor
ComponentTag(String name, XmlTag.TagType type) Automatically create a XmlTag, assign the name and the type, and construct a ComponentTag based on this XmlTag.
ComponentTag(XmlTag tag) Construct.

Method Summary

Methods

Modifier and Type	Method and Description
void	addBehavior(Behavior behavior) Adds a behavior to this component tag.
void	append(String key, CharSequence value, String separator) Appends specified value to the attribute
boolean	closes(MarkupElement open) Gets whether this tag closes the provided open tag.
boolean	containsWicketId() Says if the current tag contains a child or a descendant with the "wicket:id" attribute.
void	enableAutolink(boolean autolink) If autolink is set to true, href attributes will automatically be converted into Wicket bookmarkable URLs.
boolean	equalTo(MarkupElement element) This is not an implementation of equals because we don't care about hashCodes for MarkupElements yet.
String	getAttribute(String name) A convenient method.
IValueMap	getAttributes()
ComponentTag.IAutoComponentFactory	getAutoComponentFactory()
Iterator<? extends Behavior>	getBehaviors()
boolean	getFlag(int flag) THIS METHOD IS NOT PART OF THE WICKET PUBLIC API.
String	getId() Get the tag's component id
int	getLength() Gets the length of the tag in characters.
Class<? extends Component>	getMarkupClass() In case of inherited markup, the base and the extended markups are merged and the information about the tags origin is lost.
String	getName()
String	getNamespace()
ComponentTag	getOpenTag() If set, return the corresponding open tag (ComponentTag).
int	getPos()
XmlTag.TagType	getType()
Object	getUserData(String key) Gets userData.
XmlTag	getXmlTag()
boolean	hasBehaviors()
boolean	hasNoCloseTag()
boolean	isAutoComponentTag()
boolean	isAutolinkEnabled() True if autolink is enabled and the tag contains a href attribute.
boolean	isClose()
boolean	isIgnore() Gets ignore.
boolean	isOpen()
boolean	isOpen(String id)
boolean	isOpenClose()
boolean	isOpenClose(String id)
void	makeImmutable() Makes this tag object immutable by making the attribute map unmodifiable.
ComponentTag	mutable() Gets this tag if it is already mutable, or a mutable copy of this tag if it is immutable.
void	onBeforeRender(Component component, MarkupStream markupStream) For subclasses to override.
void	put(String key, boolean value)
void	put(String key, CharSequence value)
void	put(String key, int value)
void	put(String key, StringValue value)
void	putAll(Map<String,Object> map)
void	putInternal(String key, CharSequence value) THIS METHOD IS NOT PART OF THE PUBLIC API, DO NOT CALL IT
void	remove(String key)
boolean	requiresCloseTag() Gets whether this tag does not require a closing tag.
void	setAutoComponentFactory(ComponentTag.IAutoComponentFactory autoComponentFactory)
void	setAutoComponentTag(boolean auto)
void	setContainsWicketId(boolean containsWicketId) Sets the flag to indicate if the current tag contains a child or a descendant with the "wicket:id" attribute.
void	setFlag(int flag, boolean set) THIS METHOD IS NOT PART OF THE WICKET PUBLIC API.
void	setHasNoCloseTag(boolean hasNoCloseTag) True if the HTML tag (e.g.
void	setId(String id) Set the component's id.
void	setIgnore(boolean ignore) Sets ignore.
<C extends Component> void	setMarkupClass(Class<C> wicketHeaderClass) Set the class of wicket component which contains the wicket:head tag.
void	setModified(boolean modified) Manually mark the ComponentTag being modified.
void	setName(String name)
void	setNamespace(String namespace)
void	setOpenTag(ComponentTag tag) Assuming this is a close tag, assign it's corresponding open tag.
void	setType(XmlTag.TagType type) THIS METHOD IS NOT PART OF THE WICKET PUBLIC API.
void	setUserData(String key, Object value) Sets userData.
CharSequence	syntheticCloseTagString()
CharSequence	toCharSequence()
String	toString() Converts this object to a string representation.
String	toUserDebugString() Converts this object to a string representation including useful information for debugging
void	writeOutput(Response response, boolean stripWicketAttributes, String namespace) Write the tag to the response

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

RENDER_RAW

public static final int RENDER_RAW

Render the tag as RawMarkup even if no Component can be found

See Also:

Constant Field Values

CONTAINS_WICKET_ID

public static final int CONTAINS_WICKET_ID

If true, the current tag contains a child or a descendant with the "wicket:id" attribute

See Also:

Constant Field Values

xmlTag

protected final XmlTag xmlTag

The underlying xml tag

Constructor Detail

ComponentTag

public ComponentTag(String name,
            XmlTag.TagType type)

Automatically create a XmlTag, assign the name and the type, and construct a ComponentTag based on this XmlTag.

Parameters:

name - The name of html tag

type - The type of tag

ComponentTag

public ComponentTag(XmlTag tag)

Construct.

Parameters:

tag - The underlying xml tag

ComponentTag

public ComponentTag(ComponentTag tag)

Constructor

Parameters:

tag - The ComponentTag tag which this wicket tag is based upon.

Method Detail

setFlag

public final void setFlag(int flag,
           boolean set)

THIS METHOD IS NOT PART OF THE WICKET PUBLIC API. DO NOT USE IT!

Parameters:

flag - The flag to set

set - True to turn the flag on, false to turn it off

getFlag

public final boolean getFlag(int flag)

THIS METHOD IS NOT PART OF THE WICKET PUBLIC API. DO NOT USE IT!

Parameters:

flag - The flag to test

Returns:

True if the flag is set

addBehavior

public final void addBehavior(Behavior behavior)

Adds a behavior to this component tag.

Parameters:

behavior -

hasBehaviors

public final boolean hasBehaviors()

Returns:

true if this tag has any behaviors added, false otherwise

getBehaviors

public final Iterator<? extends Behavior> getBehaviors()

Returns:

read only iterator over added behaviors

closes

public final boolean closes(MarkupElement open)

Gets whether this tag closes the provided open tag.

Overrides:

closes in class MarkupElement

Parameters:

open - The open tag

Returns:

True if this tag closes the given open tag

enableAutolink

public final void enableAutolink(boolean autolink)

If autolink is set to true, href attributes will automatically be converted into Wicket bookmarkable URLs.

Parameters:

autolink - enable/disable automatic href conversion

getAttributes

public final IValueMap getAttributes()

Returns:

The tag#s attributes

See Also:

XmlTag.getAttributes()

getAttribute

public final String getAttribute(String name)

A convenient method. The same as getAttributes().getString(name)

Parameters:

name -

Returns:

The attributes value

getId

public final String getId()

Get the tag's component id

Returns:

The component id attribute of this tag

getLength

public final int getLength()

Gets the length of the tag in characters.

Returns:

The tag's length

getName

public final String getName()

Returns:

The tag's name

getNamespace

public final String getNamespace()

Returns:

The tag's namespace

getOpenTag

public final ComponentTag getOpenTag()

If set, return the corresponding open tag (ComponentTag).

Returns:

The corresponding open tag

getPos

public final int getPos()

Returns:

Tag location (index in input string)

See Also:

XmlTag.getPos()

getType

public final XmlTag.TagType getType()

Returns:

the tag type (OPEN, CLOSE or OPEN_CLOSE).

isAutolinkEnabled

public final boolean isAutolinkEnabled()

True if autolink is enabled and the tag contains a href attribute.

Returns:

True, if the href contained should automatically be converted

isClose

public final boolean isClose()

Returns:

True if this tag is a close tag

See Also:

XmlTag.isClose()

isOpen

public final boolean isOpen()

Returns:

True if this tag is an open tag

See Also:

XmlTag.isOpen()

isOpen

public final boolean isOpen(String id)

Parameters:

id - Required component id

Returns:

True if this tag is an open tag with the given component name

See Also:

XmlTag.isOpen()

isOpenClose

public final boolean isOpenClose()

Returns:

True if this tag is an open and a close tag

See Also:

XmlTag.isOpenClose()

isOpenClose

public final boolean isOpenClose(String id)

Parameters:

id - Required component id

Returns:

True if this tag is an openclose tag with the given component id

See Also:

XmlTag.isOpenClose()

makeImmutable

public final void makeImmutable()

Makes this tag object immutable by making the attribute map unmodifiable. Immutable tags cannot be made mutable again. They can only be copied into new mutable tag objects.

mutable

public ComponentTag mutable()

Gets this tag if it is already mutable, or a mutable copy of this tag if it is immutable.

Returns:

This tag if it is already mutable, or a mutable copy of this tag if it is immutable.

put

public final void put(String key,
       boolean value)

Parameters:

key - The key

value - The value

See Also:

XmlTag.put(String, boolean)

put

public final void put(String key,
       int value)

Parameters:

key - The key

value - The value

See Also:

XmlTag.put(String, int)

put

public final void put(String key,
       CharSequence value)

Parameters:

key - The key

value - The value

See Also:

XmlTag.put(String, CharSequence)

putInternal

public final void putInternal(String key,
               CharSequence value)

THIS METHOD IS NOT PART OF THE PUBLIC API, DO NOT CALL IT

Parameters:

key - The key

value - The value

See Also:

XmlTag.put(String, CharSequence)

append

public final void append(String key,
          CharSequence value,
          String separator)

Appends specified value to the attribute

Parameters:

key - The key

value - The value

separator - The separator used to append the value

put

public final void put(String key,
       StringValue value)

Parameters:

key - The key

value - The value

See Also:

XmlTag.put(String, StringValue)

putAll

public final void putAll(Map<String,Object> map)

Parameters:

map - a key/value map

See Also:

XmlTag.putAll(Map)

remove

public final void remove(String key)

Parameters:

key - The key to remove

See Also:

XmlTag.remove(String)

requiresCloseTag

public final boolean requiresCloseTag()

Gets whether this tag does not require a closing tag.

Returns:

True if this tag does not require a closing tag

setId

public final void setId(String id)

Set the component's id. The value is usually taken from the tag's id attribute, e.g. wicket:id="componentId".

Parameters:

id - The component's id assigned to the tag.

setName

public final void setName(String name)

Parameters:

name - New tag name

See Also:

XmlTag.setName(String)

setNamespace

public final void setNamespace(String namespace)

Parameters:

namespace - New tag name namespace

See Also:

XmlTag.setNamespace(String)

setOpenTag

public final void setOpenTag(ComponentTag tag)

Assuming this is a close tag, assign it's corresponding open tag.

Parameters:

tag - the open-tag

Throws:

RuntimeException - if 'this' is not a close tag

setType

public final void setType(XmlTag.TagType type)

THIS METHOD IS NOT PART OF THE WICKET PUBLIC API. DO NOT CALL IT.

Parameters:

type - The new type

syntheticCloseTagString

public final CharSequence syntheticCloseTagString()

Returns:

A synthetic close tag for this tag

toCharSequence

public CharSequence toCharSequence()

Specified by:

toCharSequence in class MarkupElement

Returns:

Gets the charsequence representation of this element

See Also:

MarkupElement.toCharSequence()

toString

public final String toString()

Converts this object to a string representation.

Overrides:

toString in class Object

Returns:

String version of this object

writeOutput

public final void writeOutput(Response response,
               boolean stripWicketAttributes,
               String namespace)

Write the tag to the response

Parameters:

response - The response to write to

stripWicketAttributes - if true, wicket:id are removed from output

namespace - Wicket's namespace to use

toUserDebugString

public final String toUserDebugString()

Converts this object to a string representation including useful information for debugging

Specified by:

toUserDebugString in class MarkupElement

Returns:

String version of this object

getXmlTag

public final XmlTag getXmlTag()

Returns:

Returns the underlying xml tag.

setModified

public final void setModified(boolean modified)

Manually mark the ComponentTag being modified. Flagging the tag being modified does not happen automatically.

Parameters:

modified -

hasNoCloseTag

public boolean hasNoCloseTag()

Returns:

True if the HTML tag (e.g. br) has no close tag

setHasNoCloseTag

public void setHasNoCloseTag(boolean hasNoCloseTag)

True if the HTML tag (e.g. br) has no close tag

Parameters:

hasNoCloseTag -

setContainsWicketId

public void setContainsWicketId(boolean containsWicketId)

Sets the flag to indicate if the current tag contains a child or a descendant with the "wicket:id" attribute.

Parameters:

containsWicketId -

containsWicketId

public boolean containsWicketId()

Says if the current tag contains a child or a descendant with the "wicket:id" attribute.

Returns:

true if the current tag contains a child or a descendant with the "wicket:id" attribute.

getMarkupClass

public Class<? extends Component> getMarkupClass()

In case of inherited markup, the base and the extended markups are merged and the information about the tags origin is lost. In some cases like wicket:head and wicket:link this information however is required.

Returns:

wicketHeaderClass

setMarkupClass

public <C extends Component> void setMarkupClass(Class<C> wicketHeaderClass)

Set the class of wicket component which contains the wicket:head tag.

Type Parameters:

C -

Parameters:

wicketHeaderClass - wicketHeaderClass

equalTo

public boolean equalTo(MarkupElement element)

Description copied from class: MarkupElement

This is not an implementation of equals because we don't care about hashCodes for MarkupElements yet. Also, this method only compares the namespace, name and attributes of the given MarkupElements.

Specified by:

equalTo in class MarkupElement

Parameters:

element - The markup element to compare with

Returns:

True if the other element equals this one

See Also:

MarkupElement.equalTo(org.apache.wicket.markup.MarkupElement)

isIgnore

public boolean isIgnore()

Gets ignore.

Returns:

If true than MarkupParser will remove it from the markup

setIgnore

public void setIgnore(boolean ignore)

Sets ignore.

Parameters:

ignore - If true than MarkupParser will remove it from the markup

isAutoComponentTag

public boolean isAutoComponentTag()

Returns:

True, if wicket:id has been automatically created (internal component)

setAutoComponentTag

public void setAutoComponentTag(boolean auto)

Parameters:

auto - True, if wicket:id has been automatically created (internal component)

getUserData

public Object getUserData(String key)

Gets userData.

Parameters:

key - The key to store and retrieve the value

Returns:

userData

setUserData

public void setUserData(String key,
               Object value)

Sets userData.

Parameters:

key - The key to store and retrieve the value

value - The user specific value to store

onBeforeRender

public void onBeforeRender(Component component,
                  MarkupStream markupStream)

For subclasses to override. Gets called just before a Component gets rendered. It is guaranteed that the markupStream is set on the Component and determineVisibility is not yet called.

Parameters:

component - The component that is about to be rendered

markupStream - The current markup stream

getAutoComponentFactory

public ComponentTag.IAutoComponentFactory getAutoComponentFactory()

setAutoComponentFactory

public void setAutoComponentFactory(ComponentTag.IAutoComponentFactory autoComponentFactory)