Package org.eclipse.jface.text.source

Interface IAnnotationAccessExtension

All Known Implementing Classes:

DefaultMarkerAnnotationAccess

public interface IAnnotationAccessExtension

Extension interface for IAnnotationAccess.

This interface replaces the methods of IAnnotationAccess.

This interface provides

• a label for the annotation type of a given annotation
• the paint layer of a given annotation
• means to paint a given annotation
• information about the type hierarchy of the annotation type of a given annotation

Since:

3.0

See Also:

IAnnotationAccess

Field Summary

Fields

Modifier and Type	Field	Description
static int	DEFAULT_LAYER	The default annotation layer.

Method Summary

Modifier and Type	Method	Description
int	getLayer(Annotation annotation)	Returns the layer for given annotation.
Object[]	getSupertypes(Object annotationType)	Returns the list of super types for the given annotation type.
String	getTypeLabel(Annotation annotation)	Returns the label for the given annotation's type.
boolean	isPaintable(Annotation annotation)	Returns true if painting annotation will produce something meaningful, false if not.
boolean	isSubtype(Object annotationType, Object potentialSupertype)	Returns true if the given annotation is of the given type or false otherwise.
void	paint(Annotation annotation, GC gc, Canvas canvas, Rectangle bounds)	Draws a graphical representation of the given annotation within the given bounds.

Field Detail

DEFAULT_LAYER

static final int DEFAULT_LAYER

The default annotation layer.

See Also:

Constant Field Values

Method Detail

getTypeLabel

String getTypeLabel(Annotation annotation)

Returns the label for the given annotation's type.

Parameters:

annotation - the annotation

Returns:

the label the given annotation's type or null if no such label exists

getLayer

int getLayer(Annotation annotation)

Returns the layer for given annotation. Annotations are considered being located at layers and are considered being painted starting with layer 0 upwards. Thus an annotation at layer 5 will be drawn on top of all co-located annotations at the layers 4 - 0.

Parameters:

annotation - the annotation

Returns:

the layer of the given annotation

paint

void paint(Annotation annotation,
           GC gc,
           Canvas canvas,
           Rectangle bounds)

Draws a graphical representation of the given annotation within the given bounds.

Note that this method is not used when drawing annotations on the editor's text widget. This is handled trough a AnnotationPainter.IDrawingStrategy.

Parameters:

annotation - the given annotation

gc - the drawing GC

canvas - the canvas to draw on

bounds - the bounds inside the canvas to draw on

isPaintable

boolean isPaintable(Annotation annotation)

Returns true if painting annotation will produce something meaningful, false if not. E.g. if no image is available.

Note that this method is not used when drawing annotations on the editor's text widget. This is handled trough a AnnotationPainter.IDrawingStrategy.

Parameters:

annotation - the annotation to check whether it can be painted

Returns:

true if painting annotation will succeed

isSubtype

boolean isSubtype(Object annotationType,
                  Object potentialSupertype)

Returns true if the given annotation is of the given type or false otherwise.

Parameters:

annotationType - the annotation type

potentialSupertype - the potential super annotation type

Returns:

true if annotation type is a sub-type of the potential annotation super type

getSupertypes

Object[] getSupertypes(Object annotationType)

Returns the list of super types for the given annotation type. This does not include the type itself. The index in the array of super types indicates the length of the path in the hierarchy graph to the given annotation type.

Parameters:

annotationType - the annotation type to check

Returns:

the super types for the given annotation type