Package org.eclipse.jface.text.source

Class AnnotationPainter.NullStrategy

java.lang.Object

org.eclipse.jface.text.source.AnnotationPainter.NullStrategy

All Implemented Interfaces:

AnnotationPainter.IDrawingStrategy

Enclosing class:

AnnotationPainter

public static final class AnnotationPainter.NullStrategy
extends Object
implements AnnotationPainter.IDrawingStrategy

Drawing strategy that does nothing.

Since:

3.0

Constructor Summary

Constructors

Constructor	Description
NullStrategy()

Method Summary

Modifier and Type	Method	Description
void	draw(Annotation annotation, GC gc, StyledText textWidget, int offset, int length, Color color)	Draws a decoration for an annotation onto the specified GC at the given text range.

Methods inherited from class java.lang.Object

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

Constructor Details

NullStrategy

public NullStrategy()

Method Details

draw

public void draw(Annotation annotation,
 GC gc,
 StyledText textWidget,
 int offset,
 int length,
 Color color)

Description copied from interface: AnnotationPainter.IDrawingStrategy

Draws a decoration for an annotation onto the specified GC at the given text range. There are two different invocation modes of the draw method:

• drawing mode: the passed GC is the graphics context of a paint event occurring on the text widget. The strategy should draw the decoration onto the graphics context, such that the decoration appears at the given range in the text widget.
• clearing mode: the passed GC is null. In this case the strategy must invalidate enough of the text widget's client area to cover any decoration drawn in drawing mode. This can usually be accomplished by calling textWidget.redrawRange(offset, length, true).

Specified by:

draw in interface AnnotationPainter.IDrawingStrategy

Parameters:

annotation - the annotation to be drawn

gc - the graphics context, null when in clearing mode

textWidget - the text widget to draw on

offset - the offset of the line

length - the length of the line

color - the color of the line