FoldOperation (NetBeans Code Folding API) - NetBeans API Javadoc 5.5.1

org.netbeans.spi.editor.fold
Class FoldOperation

java.lang.Object
  org.netbeans.spi.editor.fold.FoldOperation

public final class FoldOperation
extends Object

Fold operation represents services provided to an individual fold manager.
Each manager has its own dedicated instance of fold operation.

There are three main services - creation of a new fold and adding or removing it from the hierarchy.
Adding and removing of the folds requires a valid transaction that can be obtained by openTransaction().

Method Summary
Fold	addToHierarchy(FoldType type, String description, boolean collapsed, int startOffset, int endOffset, int startGuardedLength, int endGuardedLength, Object extraInfo, FoldHierarchyTransaction transaction)           Create new fold instance and add it to the hierarchy.
Object	getExtraInfo(Fold fold)           Return extra info object passed to fold at time of its creation.
FoldHierarchy	getHierarchy()           Get the hierarchy for which this fold operations works.
boolean	isAddedOrBlocked(Fold fold)           Check whether the fold is currently present in the hierarchy or blocked.
boolean	isBlocked(Fold fold)           Is the given fold blocked by another fold?
static boolean	isBoundsValid(int startOffset, int endOffset, int startGuardedLength, int endGuardedLength)           This static method can be used to check whether the bounds of the fold that is planned to be added are valid.
boolean	isEndDamaged(Fold fold)           Check whether the ending guarded area of the fold is damaged by a document modification.
boolean	isReleased()
boolean	isStartDamaged(Fold fold)           Check whether the starting guarded area of the fold is damaged by a document modification.
FoldHierarchyTransaction	openTransaction()           Open a new transaction over the fold hierarchy.
void	removeFromHierarchy(Fold fold, FoldHierarchyTransaction transaction)           Remove the fold that is either present in the hierarchy or blocked by another fold.

 

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Method Detail

addToHierarchy

public Fold addToHierarchy(FoldType type,
                           String description,
                           boolean collapsed,
                           int startOffset,
                           int endOffset,
                           int startGuardedLength,
                           int endGuardedLength,
                           Object extraInfo,
                           FoldHierarchyTransaction transaction)
                    throws BadLocationException

Create new fold instance and add it to the hierarchy.
The fold will either become part of the hierarchy directly or it will become blocked by another fold already present in the hierarchy.
Once the blocking fold gets removed this fold will be phyiscally added to the hierarchy automatically.

The fold is logically bound to the fold manager that uses this fold operation.
The fold can only be removed by this fold operation.

Parameters:

type - type of the fold to be assigned to the fold.

description - textual description of the fold that will be displayed once the fold becomes collapsed.

collapsed - whether the fold should initially be collapsed or expanded.

startOffset - starting offset of the fold. The fold creates swing position for the offset.

endOffset - ending offset of the fold. The fold creates swing position for the offset.

startGuardedLength - >=0 initial guarded area of the fold (starting at the start offset). If the guarded area is modified the fold will be removed automatically.

endGuardedLength - >=0 ending guarded area of the fold (ending at the end offset). If the guarded area is modified the fold will be removed automatically.

extraInfo - arbitrary extra information specific for the fold being created. It's not touched or used by the folding infrastructure in any way. null can be passed if there is no extra information.
The extra info of the existing fold can be obtained by getExtraInfo(org.netbeans.api.editor.fold.Fold).

Returns:

new fold instance that was added to the hierarchy.

Throws:

BadLocationException

public static boolean isBoundsValid(int startOffset,
                                    int endOffset,
                                    int startGuardedLength,
                                    int endGuardedLength)

public void removeFromHierarchy(Fold fold,
                                FoldHierarchyTransaction transaction)

public Object getExtraInfo(Fold fold)

public boolean isStartDamaged(Fold fold)

public boolean isEndDamaged(Fold fold)

public FoldHierarchyTransaction openTransaction()

public boolean isAddedOrBlocked(Fold fold)

public boolean isBlocked(Fold fold)

public FoldHierarchy getHierarchy()

public boolean isReleased()