com.sencha.gxt.core.client.util

Class Util

java.lang.Object

com.sencha.gxt.core.client.util.Util

public class Util
extends Object

Various utility functions.

Field Summary

Fields

Modifier and Type	Field and Description
static SafeHtml	NBSP_SAFE_HTML A non-breaking space in SafeHtml form.

Constructor Summary

Constructors

Constructor and Description
Util()

Method Summary

Modifier and Type	Method and Description
static int	constrain(int value, int min, int max) Constrains the value by a minimum and max value.
static <T> List<T>	createList(T... element) Creates a new list and adds the element(s).
static boolean	equalWithNull(Object obj1, Object obj2) Does an equals check by first checking identity, then equality.
static <T> void	fill(List<T> list, T[] elements) Populates a list with an array of elements.
static Element	getImage(ImageResource ir) Returns an element for the given image.
static boolean	isEmptyString(String string) Returns true if the string is null or equals to the empty string.
static boolean	isInteger(String value) Tests if the value is an integer.
static int	parseInt(String value, int defaultValue) Parses a string value and returns an integer.
static Overflow	parseOverflow(String value) Parses a string value and returns the applicable Overflow object.
static Element[]	toElementArray(<any> nodes) Converts a node list to an element array.
static Element[]	toElementArray(List<Element> nodes) Converts a node list to an element array.

Methods inherited from class java.lang.Object

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

Field Detail

NBSP_SAFE_HTML

public static final SafeHtml NBSP_SAFE_HTML

A non-breaking space in SafeHtml form.

Constructor Detail

Util

public Util()

Method Detail

constrain

public static int constrain(int value,
                            int min,
                            int max)

Constrains the value by a minimum and max value.

Parameters:

value - the value

min - the minimum

max - the maximum

Returns:

the adjusted value

createList

public static <T> List<T> createList(T... element)

Creates a new list and adds the element(s).

Type Parameters:

T - the element type

Parameters:

element - the item to add to the list

Returns:

the new list

equalWithNull

public static boolean equalWithNull(Object obj1,
                                    Object obj2)

Does an equals check by first checking identity, then equality.

Parameters:

obj1 - object 1

obj2 - object 2

Returns:

boolean if equal

fill

public static <T> void fill(List<T> list,
                            T[] elements)

Populates a list with an array of elements.

Type Parameters:

T - the element type

Parameters:

list - the list

elements - the elements to be added to the list

getImage

public static Element getImage(ImageResource ir)

Returns an element for the given image.

Parameters:

ir - the image resource

Returns:

the element

isEmptyString

public static boolean isEmptyString(String string)

Returns true if the string is null or equals to the empty string.

Parameters:

string - the string to test

Returns:

true if the string is empty

isInteger

public static boolean isInteger(String value)

Tests if the value is an integer.

Parameters:

value - the value to test

Returns:

the integer state

parseInt

public static int parseInt(String value,
                           int defaultValue)

Parses a string value and returns an integer.

Parameters:

value - the string value

defaultValue - the default value

Returns:

the integer value

parseOverflow

public static Overflow parseOverflow(String value)

Parses a string value and returns the applicable Overflow object.

Parameters:

value - the string value

Returns:

the Overflow object

toElementArray

public static Element[] toElementArray(List<Element> nodes)

Converts a node list to an element array.

Parameters:

nodes - the nodes

Returns:

the element array

toElementArray

public static Element[] toElementArray(<any> nodes)

Converts a node list to an element array.

Parameters:

nodes - the nodes

Returns:

the element array