Package com.vaadin.client.flow.collection

Class JsArray<T>

java.lang.Object

com.vaadin.client.flow.collection.JsArray<T>

Type Parameters:

T - the type of the array items

Direct Known Subclasses:

JreJsArray

@JsType(isNative=true,
        name="Array",
        namespace="<global>")
public class JsArray<T>
extends Object

Native JS Array interface with an alternative implementation for JRE usage. Use JsCollections.array() to create an appropriate instance.

Since:

1.0

Author:

Vaadin Ltd

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	JsArray()	Should not be directly created.

Method Summary

Modifier and Type	Method	Description
JsArray<T>	clear()	Clears the array.
void	forEach(JsCollections.ForEachCallback<T> callback)	Invokes the provided callback for each value in this array.
T	get(int index)	Gets the item at the given index.
boolean	isEmpty()	Checks if the array is empty (length == 0).
int	length()	Gets the current length of this array.
int	push(T... values)	Adds items to the end of this array.
int	pushArray(JsArray<? extends T> values)	Adds items to the end of this array.
T	remove(int index)	Removes the item at the given index.
boolean	remove(T toRemove)	Removes the given item from the array.
void	set(int index, T value)	Sets the item at the given index.
T	shift()	Removes and returns the first value from the array.
JsArray<T>	splice(int index, int remove, T... add)	Removes and adds a number of items at the given index.
JsArray<T>	spliceArray(int index, int remove, JsArray<? extends T> add)	Removes and adds a number of items at the given index.

Methods inherited from class java.lang.Object

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

Constructor Detail

JsArray

protected JsArray()

Should not be directly created.

Method Detail

get

@JsOverlay
public final T get(int index)

Gets the item at the given index. This is corresponding to return array[index] in JavaScript.

Parameters:

index - the index to get

Returns:

the item at the given index

set

@JsOverlay
public final void set(int index,
                      T value)

Sets the item at the given index. This is corresponding to array[index] = value in JavaScript.

Parameters:

index - the index to set

value - the value to set

push

public int push(T... values)

Adds items to the end of this array.

Parameters:

values - the new values to add

Returns:

the new length of the array

pushArray

@JsOverlay
public final int pushArray(JsArray<? extends T> values)

Adds items to the end of this array.

Parameters:

values - the new values to add

Returns:

the new length of the array

length

@JsProperty(name="length")
public int length()

Gets the current length of this array.

Returns:

the array length

spliceArray

@JsOverlay
public final JsArray<T> spliceArray(int index,
                                    int remove,
                                    JsArray<? extends T> add)

Removes and adds a number of items at the given index.

Parameters:

index - the index at which do do the operation

remove - the number of items to remove

add - new items to add

Returns:

an array of removed items

splice

public JsArray<T> splice(int index,
                         int remove,
                         T... add)

Removes and adds a number of items at the given index.

Parameters:

index - the index at which do do the operation

remove - the number of items to remove

add - new items to add

Returns:

an array of removed items

remove

@JsOverlay
public final T remove(int index)

Removes the item at the given index.

Parameters:

index - the index to remove

Returns:

the remove item

clear

@JsOverlay
public final JsArray<T> clear()

Clears the array.

Returns:

the cleared array

isEmpty

@JsOverlay
public final boolean isEmpty()

Checks if the array is empty (length == 0).

Returns:

true if the array is empty, false otherwise

remove

@JsOverlay
public final boolean remove(T toRemove)

Removes the given item from the array.

Parameters:

toRemove - the item to remove

Returns:

true if the item was found and removed from the array, false otherwise

shift

public T shift()

Removes and returns the first value from the array.

Returns:

the first value of the array or null if the array is empty

forEach

public void forEach(JsCollections.ForEachCallback<T> callback)

Invokes the provided callback for each value in this array.

Parameters:

callback - the callback to invoke for each value