org.eclipse.jface.text.presentation

Class PresentationReconciler

java.lang.Object

org.eclipse.jface.text.presentation.PresentationReconciler

All Implemented Interfaces:

IPresentationReconciler, IPresentationReconcilerExtension

public class PresentationReconciler
extends java.lang.Object
implements IPresentationReconciler, IPresentationReconcilerExtension

Standard implementation of IPresentationReconciler. This implementation assumes that the tasks performed by its presentation damagers and repairers are lightweight and of low cost. This presentation reconciler runs in the UI thread and always repairs the complete damage caused by a document change rather than just the portion overlapping with the viewer's viewport.

Usually, clients instantiate this class and configure it before using it.

Field Summary

Fields

Modifier and Type	Field and Description
protected static java.lang.String	TRACKED_PARTITION Prefix of the name of the position category for tracking damage regions.

Constructor Summary

Constructors

Constructor and Description
PresentationReconciler() Creates a new presentation reconciler.

Method Summary

Modifier and Type	Method and Description
protected TextPresentation	createPresentation(IRegion damage, IDocument document) Constructs a "repair description" for the given damage and returns this description as a text presentation.
IPresentationDamager	getDamager(java.lang.String contentType) Returns the presentation damager registered with this presentation reconciler for the specified content type.
java.lang.String	getDocumentPartitioning() Returns the document partitioning this presentation reconciler is using.
IPresentationRepairer	getRepairer(java.lang.String contentType) Returns the presentation repairer registered with this presentation reconciler for the specified content type.
void	install(ITextViewer viewer) Installs this presentation reconciler on the given text viewer.
void	setDamager(IPresentationDamager damager, java.lang.String contentType) Registers the given presentation damager for a particular content type.
void	setDocumentPartitioning(java.lang.String partitioning) Sets the document partitioning for this presentation reconciler.
protected void	setDocumentToDamagers(IDocument document) Informs all registered damagers about the document on which they will work.
protected void	setDocumentToRepairers(IDocument document) Informs all registered repairers about the document on which they will work.
void	setRepairer(IPresentationRepairer repairer, java.lang.String contentType) Registers the given presentation repairer for a particular content type.
void	uninstall() Removes the reconciler from the text viewer it has previously been installed on.

Methods inherited from class java.lang.Object

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

Field Detail

TRACKED_PARTITION

protected static final java.lang.String TRACKED_PARTITION

Prefix of the name of the position category for tracking damage regions.

See Also:

Constant Field Values

Constructor Detail

PresentationReconciler

public PresentationReconciler()

Creates a new presentation reconciler. There are no damagers or repairers registered with this reconciler by default. The default partitioning IDocumentExtension3.DEFAULT_PARTITIONING is used.

Method Detail

setDocumentPartitioning

public void setDocumentPartitioning(java.lang.String partitioning)

Sets the document partitioning for this presentation reconciler.

Parameters:

partitioning - the document partitioning for this presentation reconciler.

Since:

3.0

getDocumentPartitioning

public java.lang.String getDocumentPartitioning()

Description copied from interface: IPresentationReconcilerExtension

Returns the document partitioning this presentation reconciler is using.

Specified by:

getDocumentPartitioning in interface IPresentationReconcilerExtension

Returns:

the document partitioning this presentation reconciler is using

setDamager

public void setDamager(IPresentationDamager damager,
                       java.lang.String contentType)

Registers the given presentation damager for a particular content type. If there is already a damager registered for this type, the old damager is removed first.

Parameters:

damager - the presentation damager to register, or null to remove an existing one

contentType - the content type under which to register

setRepairer

public void setRepairer(IPresentationRepairer repairer,
                        java.lang.String contentType)

Registers the given presentation repairer for a particular content type. If there is already a repairer registered for this type, the old repairer is removed first.

Parameters:

repairer - the presentation repairer to register, or null to remove an existing one

contentType - the content type under which to register

install

public void install(ITextViewer viewer)

Description copied from interface: IPresentationReconciler

Installs this presentation reconciler on the given text viewer. After this method has been finished, the reconciler is operational. I.e., it works without requesting further client actions until uninstall is called.

The install and uninstall methods must be called in sequence; i.e. repeatedly calling install without calling uninstall may throw an exception.

Specified by:

install in interface IPresentationReconciler

Parameters:

viewer - the viewer on which this presentation reconciler is installed

uninstall

public void uninstall()

Description copied from interface: IPresentationReconciler

Removes the reconciler from the text viewer it has previously been installed on.

Specified by:

uninstall in interface IPresentationReconciler

getDamager

public IPresentationDamager getDamager(java.lang.String contentType)

Description copied from interface: IPresentationReconciler

Returns the presentation damager registered with this presentation reconciler for the specified content type.

Specified by:

getDamager in interface IPresentationReconciler

Parameters:

contentType - the content type for which to determine the damager

Returns:

the presentation damager registered for the given content type, or null if there is no damager

getRepairer

public IPresentationRepairer getRepairer(java.lang.String contentType)

Description copied from interface: IPresentationReconciler

Returns the presentation repairer registered with this presentation reconciler for the specified content type.

Specified by:

getRepairer in interface IPresentationReconciler

Parameters:

contentType - the content type for which to determine the repairer

Returns:

the presentation repairer registered for the given content type, or null if there is no repairer

setDocumentToDamagers

protected void setDocumentToDamagers(IDocument document)

Informs all registered damagers about the document on which they will work.

Parameters:

document - the document on which to work

setDocumentToRepairers

protected void setDocumentToRepairers(IDocument document)

Informs all registered repairers about the document on which they will work.

Parameters:

document - the document on which to work

createPresentation

protected TextPresentation createPresentation(IRegion damage,
                                              IDocument document)

Constructs a "repair description" for the given damage and returns this description as a text presentation. For this, it queries the partitioning of the damage region and asks the appropriate presentation repairer for each partition to construct the "repair description" for this partition.

Parameters:

damage - the damage to be repaired

document - the document whose presentation must be repaired

Returns:

the presentation repair description as text presentation or null if the partitioning could not be computed