Package org.eclipse.jface.viewers

Class LabelProvider

java.lang.Object

org.eclipse.core.commands.common.EventManager

org.eclipse.jface.viewers.BaseLabelProvider

org.eclipse.jface.viewers.LabelProvider

All Implemented Interfaces:

IBaseLabelProvider, ILabelProvider

Direct Known Subclasses:

ComboBoxLabelProvider, DecoratingLabelProvider, EnvironmentTab.EnvironmentVariableLabelProvider, FileEditorMappingLabelProvider, NamedHandleObjectLabelProvider, ObservableMapLabelProvider, PerspectiveLabelProvider, PreferenceLabelProvider, RefactoringHistoryLabelProvider, URLLabelProvider, WorkbenchLabelProvider, WorkbenchPartLabelProvider

public class LabelProvider
extends BaseLabelProvider
implements ILabelProvider

A label provider implementation which, by default, uses an element's toString value for its text and null for its image.

This class may be used as is, or subclassed to provide richer labels. Subclasses may override any of the following methods:

• isLabelProperty
• getImage
• getText
• dispose

Constructor Summary

Constructors

Constructor	Description
LabelProvider()	Creates a new label provider.

Method Summary

Modifier and Type	Method	Description
static LabelProvider	createImageProvider(java.util.function.Function<java.lang.Object,Image> imageFunction)	Creates a LabelProvider which implements the getImage(java.lang.Object) method by calling the argument function.
static LabelProvider	createTextImageProvider(java.util.function.Function<java.lang.Object,java.lang.String> textFunction, java.util.function.Function<java.lang.Object,Image> imageFunction)	Creates a LabelProvider which implements both the getText(java.lang.Object) and getImage(java.lang.Object) methods by calling the argument functions.
static LabelProvider	createTextProvider(java.util.function.Function<java.lang.Object,java.lang.String> textFunction)	Creates a LabelProvider which implements the getText(java.lang.Object) method by calling the argument function.
Image	getImage(java.lang.Object element)	The LabelProvider implementation of this ILabelProvider method returns null.
java.lang.String	getText(java.lang.Object element)	The LabelProvider implementation of this ILabelProvider method returns the element's toString string.

Methods inherited from class org.eclipse.jface.viewers.BaseLabelProvider

addListener, dispose, fireLabelProviderChanged, isLabelProperty, removeListener

Methods inherited from class org.eclipse.core.commands.common.EventManager

addListenerObject, clearListeners, getListeners, isListenerAttached, removeListenerObject

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.jface.viewers.IBaseLabelProvider

addListener, dispose, isLabelProperty, removeListener

Constructor Detail

LabelProvider

public LabelProvider()

Creates a new label provider.

Method Detail

getImage

public Image getImage(java.lang.Object element)

The LabelProvider implementation of this ILabelProvider method returns null. Subclasses may override.

Specified by:

getImage in interface ILabelProvider

Parameters:

element - the element for which to provide the label image

Returns:

the image used to label the element, or null if there is no image for the given object

getText

public java.lang.String getText(java.lang.Object element)

The LabelProvider implementation of this ILabelProvider method returns the element's toString string. Subclasses may override.

Specified by:

getText in interface ILabelProvider

Parameters:

element - the element for which to provide the label text

Returns:

the text string used to label the element, or null if there is no text label for the given object

createTextProvider

public static LabelProvider createTextProvider(java.util.function.Function<java.lang.Object,java.lang.String> textFunction)

Creates a LabelProvider which implements the getText(java.lang.Object) method by calling the argument function.

Parameters:

textFunction - the function which returns the text

Returns:

The new LabelProvider

Since:

3.19

createImageProvider

public static LabelProvider createImageProvider(java.util.function.Function<java.lang.Object,Image> imageFunction)

Creates a LabelProvider which implements the getImage(java.lang.Object) method by calling the argument function.

Parameters:

imageFunction - the function which returns the image

Returns:

The new LabelProvider

Since:

3.19

createTextImageProvider

public static LabelProvider createTextImageProvider(java.util.function.Function<java.lang.Object,java.lang.String> textFunction,
                                                    java.util.function.Function<java.lang.Object,Image> imageFunction)

Creates a LabelProvider which implements both the getText(java.lang.Object) and getImage(java.lang.Object) methods by calling the argument functions.

Parameters:

textFunction - the function which returns the text

imageFunction - the function which returns the image

Returns:

The new LabelProvider

Since:

3.19