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Eclipse Platform
Release 3.5

org.eclipse.text.edits
Class MoveTargetEdit

java.lang.Object
  extended by 

org.eclipse.text.edits.TextEdit
      extended by 
org.eclipse.text.edits.MoveTargetEdit

public final class MoveTargetEdit
extends TextEdit

A move target edit denotes the target of a move operation. Move target edits are only valid inside an edit tree if they have a corresponding source edit. Furthermore a target edit can't can't be a direct or indirect child of its associated source edit. Violating one of two requirements will result in a MalformedTreeException when executing the edit tree.

Move target edits can't be used as a parent for other edits. Trying to add an edit to a move target edit results in a MalformedTreeException as well.

Since:
3.0
See Also:
MoveSourceEdit, CopyTargetEdit

Field Summary
 
Fields inherited from class org.eclipse.text.edits. TextEdit
CREATE_UNDO, NONE, UPDATE_REGIONS
 
Constructor Summary
MoveTargetEdit (int offset)
          Constructs a new move target edit
MoveTargetEdit (int offset, MoveSourceEdit source)
          Constructs an new move target edit
 
Method Summary
protected  void accept0 ( TextEditVisitor visitor)
          Accepts the given visitor on a type-specific visit of the current edit.
protected   TextEdit doCopy ()
          Creates and returns a copy of this edit.
  MoveSourceEdit getSourceEdit ()
          Returns the associated source edit or null if no source edit is associated yet.
protected  void postProcessCopy ( TextEditCopier copier)
          This method is called on every edit of the copied tree to do some post-processing like connected an edit to a different edit in the tree.
 void setSourceEdit ( MoveSourceEdit edit)
          Sets the source edit.
 
Methods inherited from class org.eclipse.text.edits. TextEdit
accept, acceptChildren, addChild, addChildren, apply, apply, canZeroLengthCover, childDocumentUpdated, childRegionUpdated, copy, covers, equals, getChildren, getChildrenSize, getCoverage, getExclusiveEnd, getInclusiveEnd, getLength, getOffset, getParent, getRegion, getRoot, hasChildren, hashCode, isDeleted, moveTree, removeChild, removeChild, removeChildren, toString
 
Methods inherited from class java.lang. Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
 

Constructor Detail

MoveTargetEdit

public MoveTargetEdit(int offset)
Constructs a new move target edit

Parameters:
offset - the edit's offset

MoveTargetEdit

public MoveTargetEdit(int offset,
                      
MoveSourceEdit source)
Constructs an new move target edit

Parameters:
offset - the edit's offset
source - the corresponding source edit
Method Detail

getSourceEdit

public 
MoveSourceEdit getSourceEdit()
Returns the associated source edit or null if no source edit is associated yet.

Returns:
the source edit or null

setSourceEdit

public void setSourceEdit(
MoveSourceEdit edit)
Sets the source edit.

Parameters:
edit - the source edit
Throws:
MalformedTreeException - is thrown if the target edit is a direct or indirect child of the source edit

doCopy

protected 
TextEdit doCopy()
Description copied from class: TextEdit
Creates and returns a copy of this edit. The copy method should be implemented in a way so that the copy can executed without causing any harm to the original edit. Implementors of this method are responsible for creating deep or shallow copies of referenced object to fulfill this requirement.

Implementers of this method should use the copy constructor Edit#Edit(Edit source) to initialize the edit part of the copy. Implementors aren't responsible to actually copy the children or to set the right parent.

This method should not be called from outside the framework. Please use copy to create a copy of a edit tree.

Specified by:
doCopy in class TextEdit
Returns:
a copy of this edit.
See Also:
TextEdit.copy(), TextEdit.postProcessCopy(TextEditCopier), TextEditCopier

postProcessCopy

protected void postProcessCopy(
TextEditCopier copier)
Description copied from class: TextEdit
This method is called on every edit of the copied tree to do some post-processing like connected an edit to a different edit in the tree.

This default implementation does nothing

Overrides:
postProcessCopy in class TextEdit
Parameters:
copier - the copier that manages a map between original and copied edit.
See Also:
TextEditCopier

accept0

protected void accept0(
TextEditVisitor visitor)
Description copied from class: TextEdit
Accepts the given visitor on a type-specific visit of the current edit. This method must be implemented in all concrete text edits.

General template for implementation on each concrete TextEdit class:

 
 boolean visitChildren= visitor.visit(this);
 if (visitChildren) {
    acceptChildren(visitor);
 }
 
 
Note that the caller (accept) takes care of invoking visitor.preVisit(this) and visitor.postVisit(this).

Specified by:
accept0 in class TextEdit
Parameters:
visitor - the visitor object

Eclipse Platform
Release 3.5

Guidelines for using Eclipse APIs.

Copyright (c) Eclipse contributors and others 2000, 2008. All rights reserved.


 
 
  Published under the terms of the Eclipse Public License Version 1.0 ("EPL") Design by Interspire