Package com.vaadin.flow.dom.impl

Class AbstractTextElementStateProvider

java.lang.Object

com.vaadin.flow.dom.impl.AbstractTextElementStateProvider

All Implemented Interfaces:

ElementStateProvider, Serializable

Direct Known Subclasses:

BasicTextElementStateProvider

public abstract class AbstractTextElementStateProvider
extends Object
implements ElementStateProvider

Abstract element state provider for text nodes. Operations that are not applicable for text nodes throw UnsupportedOperationException.

For internal use only. May be renamed or removed in a future release.

Since:

1.0

Author:

Vaadin Ltd

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
AbstractTextElementStateProvider()

Method Summary

Modifier and Type	Method	Description
DomListenerRegistration	addEventListener(StateNode node, String eventType, DomEventListener listener)	Adds a DOM event listener.
Registration	addPropertyChangeListener(StateNode node, String name, PropertyChangeListener listener)	Adds a property change listener.
void	appendVirtualChild(StateNode node, Element child, String type, String payload)	Append the given element as a virtual child.
void	attachExistingElement(StateNode node, String tagName, Element previousSibling, ChildElementConsumer callback)	Attaches a child element with the given tagName which is the next sibling for the previousSibling.
StateNode	attachShadow(StateNode node)	Attaches the shadow root for the node.
SignalBinding<String>	bindAttributeSignal(Element owner, String attribute, Signal<String> signal)	Binds the given signal to the given attribute.
SignalBinding<?>	bindPropertySignal(Element owner, String name, Signal<?> signal, SerializableConsumer<?> writeCallback)	Binds the given signal to the given property.
SignalBinding<Boolean>	bindVisibleSignal(Element owner, Signal<Boolean> signal)	Binds the given signal to the visible property.
String	getAttribute(StateNode node, String attribute)	Gets the value of the given attribute.
Stream<String>	getAttributeNames(StateNode node)	Gets the defined attribute names.
Element	getChild(StateNode node, int index)	Returns the child element at the given position.
int	getChildCount(StateNode node)	Gets the number of child elements.
ClassList	getClassList(StateNode node)	Gets a list representation of all CSS class names set for an element.
Serializable	getProperty(StateNode node, String name)	Gets the value of the given property.
Stream<String>	getPropertyNames(StateNode node)	Gets the defined property names.
StateNode	getShadowRoot(StateNode node)	Gets shadow root for the node if it has been attached.
Style	getStyle(StateNode node)	Returns a style instance for managing element inline styles.
String	getTag(StateNode node)	Gets the tag name for the given node.
boolean	hasAttribute(StateNode node, String attribute)	Checks if the given attribute has been set.
boolean	hasProperty(StateNode node, String name)	Checks if the given property has been set.
void	insertChild(StateNode node, int index, Element child)	Inserts the given child at the given position.
boolean	isTextNode(StateNode node)	Checks if the state node represents a text node.
boolean	isVisible(StateNode node)	Gets the node visibility.
void	removeAllChildren(StateNode node)	Removes all child elements.
void	removeAttribute(StateNode node, String attribute)	Removes the given attribute if it has been set.
void	removeChild(StateNode node, int index)	Removes the child at the given position.
void	removeChild(StateNode node, Element child)	Removes the given child.
void	removeProperty(StateNode node, String name)	Removes the given property if it has been set.
void	setAttribute(StateNode node, String attribute, AbstractStreamResource resource)	Sets the given attribute to the given StreamResource value.
void	setAttribute(StateNode node, String attribute, String value)	Sets the given attribute to the given value.
void	setProperty(StateNode node, String name, Serializable value, boolean emitChange)	Sets the given property to the given value.
void	setVisible(StateNode node, boolean visible)	Sets the node visibility.
void	visit(StateNode node, NodeVisitor visitor)	Visit the node applying visitor to it and its descendants based on the return value from the visitor.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.vaadin.flow.dom.ElementStateProvider

getComponent, getParent, getTextContent, setComponent, setTextContent, supports

Constructor Details

AbstractTextElementStateProvider

public AbstractTextElementStateProvider()

Method Details

isTextNode

public boolean isTextNode(StateNode node)

Description copied from interface: ElementStateProvider

Checks if the state node represents a text node.

Specified by:

isTextNode in interface ElementStateProvider

Parameters:

node - the node to check

Returns:

true if the state node represents a text node; otherwise false

getTag

public String getTag(StateNode node)

Description copied from interface: ElementStateProvider

Gets the tag name for the given node.

Specified by:

getTag in interface ElementStateProvider

Parameters:

node - the node containing the data

Returns:

the tag name

setAttribute

public void setAttribute(StateNode node,
 String attribute,
 String value)

Description copied from interface: ElementStateProvider

Sets the given attribute to the given value.

Specified by:

setAttribute in interface ElementStateProvider

Parameters:

node - the node containing the data

attribute - the attribute name, not null

value - the attribute value

bindAttributeSignal

public SignalBinding<String> bindAttributeSignal(Element owner,
 String attribute,
 Signal<String> signal)

Description copied from interface: ElementStateProvider

Binds the given signal to the given attribute. null signal unbinds existing binding.

Specified by:

bindAttributeSignal in interface ElementStateProvider

Parameters:

owner - the owner element for which the signal is bound, not null

attribute - the name of the attribute

signal - the signal to bind, not null

getAttribute

public String getAttribute(StateNode node,
 String attribute)

Description copied from interface: ElementStateProvider

Gets the value of the given attribute.

Specified by:

getAttribute in interface ElementStateProvider

Parameters:

node - the node containing the data

attribute - the attribute name, not null

Returns:

the attribute value or null if the attribute has not been set

hasAttribute

public boolean hasAttribute(StateNode node,
 String attribute)

Description copied from interface: ElementStateProvider

Checks if the given attribute has been set.

Specified by:

hasAttribute in interface ElementStateProvider

Parameters:

node - the node containing the data

attribute - the attribute name, not null

Returns:

true if the attribute has been set, false otherwise

removeAttribute

public void removeAttribute(StateNode node,
 String attribute)

Description copied from interface: ElementStateProvider

Removes the given attribute if it has been set.

Specified by:

removeAttribute in interface ElementStateProvider

Parameters:

node - the node containing the data

attribute - the attribute name, not null

getAttributeNames

public Stream<String> getAttributeNames(StateNode node)

Description copied from interface: ElementStateProvider

Gets the defined attribute names.

Specified by:

getAttributeNames in interface ElementStateProvider

Parameters:

node - the node containing the data

Returns:

the defined attribute names

getChildCount

public int getChildCount(StateNode node)

Description copied from interface: ElementStateProvider

Gets the number of child elements.

Specified by:

getChildCount in interface ElementStateProvider

Parameters:

node - the node containing the data

Returns:

the number of child elements

getChild

public Element getChild(StateNode node,
 int index)

Description copied from interface: ElementStateProvider

Returns the child element at the given position.

Specified by:

getChild in interface ElementStateProvider

Parameters:

node - the node containing the data

index - the index of the child element to return

Returns:

the child element

insertChild

public void insertChild(StateNode node,
 int index,
 Element child)

Description copied from interface: ElementStateProvider

Inserts the given child at the given position.

Specified by:

insertChild in interface ElementStateProvider

Parameters:

node - the node containing the data

index - the position at which to insert the new child

child - the child element to insert

removeChild

public void removeChild(StateNode node,
 int index)

Description copied from interface: ElementStateProvider

Removes the child at the given position.

Specified by:

removeChild in interface ElementStateProvider

Parameters:

node - the node containing the data

index - the position of the child element to remove

removeChild

public void removeChild(StateNode node,
 Element child)

Description copied from interface: ElementStateProvider

Removes the given child.

Specified by:

removeChild in interface ElementStateProvider

Parameters:

node - the node containing the data

child - the child element to remove

removeAllChildren

public void removeAllChildren(StateNode node)

Description copied from interface: ElementStateProvider

Removes all child elements.

Specified by:

removeAllChildren in interface ElementStateProvider

Parameters:

node - the node containing the data

addEventListener

public DomListenerRegistration addEventListener(StateNode node,
 String eventType,
 DomEventListener listener)

Description copied from interface: ElementStateProvider

Adds a DOM event listener.

Specified by:

addEventListener in interface ElementStateProvider

Parameters:

node - the node containing the data

eventType - the event type

listener - the listener

Returns:

a handle for configuring or removing the listener

getProperty

public Serializable getProperty(StateNode node,
 String name)

Description copied from interface: ElementStateProvider

Gets the value of the given property.

Specified by:

getProperty in interface ElementStateProvider

Parameters:

node - the node containing the data

name - the property name, not null

Returns:

the property value, or null if the property has not been set

setProperty

public void setProperty(StateNode node,
 String name,
 Serializable value,
 boolean emitChange)

Description copied from interface: ElementStateProvider

Sets the given property to the given value.

Specified by:

setProperty in interface ElementStateProvider

Parameters:

node - the node containing the data

name - the property name, not null

value - the property value

emitChange - true to create a change event for the client side

bindPropertySignal

public SignalBinding<?> bindPropertySignal(Element owner,
 String name,
 Signal<?> signal,
 SerializableConsumer<?> writeCallback)

Description copied from interface: ElementStateProvider

Binds the given signal to the given property.

Specified by:

bindPropertySignal in interface ElementStateProvider

Parameters:

owner - the owner element for which the signal is bound, not null

name - the property name, not null

signal - the signal to bind, not null

writeCallback - the callback to propagate value changes back, or null for a read-only binding

removeProperty

public void removeProperty(StateNode node,
 String name)

Description copied from interface: ElementStateProvider

Removes the given property if it has been set.

Specified by:

removeProperty in interface ElementStateProvider

Parameters:

node - the node containing the data

name - the property name, not null

hasProperty

public boolean hasProperty(StateNode node,
 String name)

Description copied from interface: ElementStateProvider

Checks if the given property has been set.

Specified by:

hasProperty in interface ElementStateProvider

Parameters:

node - the node containing the data

name - the property name, not null

Returns:

true if the property has been set, false otherwise

getPropertyNames

public Stream<String> getPropertyNames(StateNode node)

Description copied from interface: ElementStateProvider

Gets the defined property names.

Specified by:

getPropertyNames in interface ElementStateProvider

Parameters:

node - the node containing the data

Returns:

the defined property names

getClassList

public ClassList getClassList(StateNode node)

Description copied from interface: ElementStateProvider

Gets a list representation of all CSS class names set for an element.

Specified by:

getClassList in interface ElementStateProvider

Parameters:

node - the node containing the data

Returns:

the class list, never null

getStyle

public Style getStyle(StateNode node)

Description copied from interface: ElementStateProvider

Returns a style instance for managing element inline styles.

Specified by:

getStyle in interface ElementStateProvider

Parameters:

node - the node containing the data

Returns:

the element styles

setAttribute

public void setAttribute(StateNode node,
 String attribute,
 AbstractStreamResource resource)

Description copied from interface: ElementStateProvider

Sets the given attribute to the given StreamResource value.

Specified by:

setAttribute in interface ElementStateProvider

Parameters:

node - the node containing the data

attribute - the attribute name, not null

resource - the attribute value, not null

addPropertyChangeListener

public Registration addPropertyChangeListener(StateNode node,
 String name,
 PropertyChangeListener listener)

Description copied from interface: ElementStateProvider

Adds a property change listener.

Specified by:

addPropertyChangeListener in interface ElementStateProvider

Parameters:

node - the node containing the property

name - the property name to add the listener for

listener - listener to get notifications about property value changes

Returns:

an event registration handle for removing the listener

getShadowRoot

public StateNode getShadowRoot(StateNode node)

Description copied from interface: ElementStateProvider

Gets shadow root for the node if it has been attached.

Specified by:

getShadowRoot in interface ElementStateProvider

Parameters:

node - the node having a shadow root, not null

Returns:

the shadow root of the node, may be null

attachShadow

public StateNode attachShadow(StateNode node)

Description copied from interface: ElementStateProvider

Attaches the shadow root for the node.

Specified by:

attachShadow in interface ElementStateProvider

Parameters:

node - the node to attach the shadow root

Returns:

the shadow root of the node

attachExistingElement

public void attachExistingElement(StateNode node,
 String tagName,
 Element previousSibling,
 ChildElementConsumer callback)

Description copied from interface: ElementStateProvider

Attaches a child element with the given tagName which is the next sibling for the previousSibling.

The previousSibling parameter value can be null which means that the very first child with the given tagName will be used to attach (if any).

Specified by:

attachExistingElement in interface ElementStateProvider

Parameters:

node - the parent node

tagName - the tag name of the element to attach, not null

previousSibling - previous sibling, may be null

callback - the callback which will be invoked with a server side element instance or an error will be reported, not null

appendVirtualChild

public void appendVirtualChild(StateNode node,
 Element child,
 String type,
 String payload)

Description copied from interface: ElementStateProvider

Append the given element as a virtual child.

Specified by:

appendVirtualChild in interface ElementStateProvider

Parameters:

node - the node containing the data

child - the child element to add

type - the type of additional payload data

payload - the additional payload data

visit

public void visit(StateNode node,
 NodeVisitor visitor)

Description copied from interface: ElementStateProvider

Visit the node applying visitor to it and its descendants based on the return value from the visitor.

Specified by:

visit in interface ElementStateProvider

Parameters:

node - the node to visit

visitor - the visitor to apply to the node

bindVisibleSignal

public SignalBinding<Boolean> bindVisibleSignal(Element owner,
 Signal<Boolean> signal)

Description copied from interface: ElementStateProvider

Binds the given signal to the visible property.

Specified by:

bindVisibleSignal in interface ElementStateProvider

Parameters:

owner - the owner element for which the signal is bound, not null

signal - the signal to bind, not null

setVisible

public void setVisible(StateNode node,
 boolean visible)

Description copied from interface: ElementStateProvider

Sets the node visibility.

Specified by:

setVisible in interface ElementStateProvider

Parameters:

node - the node containing the data

visible - the node visibility value

isVisible

public boolean isVisible(StateNode node)

Description copied from interface: ElementStateProvider

Gets the node visibility.

Specified by:

isVisible in interface ElementStateProvider

Parameters:

node - the node containing the data

Returns:

the node visibility