Package org.eclipse.text.edits
Class UndoEdit
- java.lang.Object
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- org.eclipse.text.edits.TextEdit
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- org.eclipse.text.edits.UndoEdit
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public final class UndoEdit extends TextEdit
This class encapsulates the reverse changes of an executed text edit tree. To apply an undo memento to a document use methodapply(IDocument)
.Clients can't add additional children to an undo edit nor can they add an undo edit as a child to another edit. Doing so results in both cases in a
MalformedTreeException
.- Since:
- 3.0
- Restriction:
- This class is not intended to be instantiated by clients.
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Field Summary
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Fields inherited from class org.eclipse.text.edits.TextEdit
CREATE_UNDO, NONE, UPDATE_REGIONS
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description 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.-
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, postProcessCopy, removeChild, removeChild, removeChildren, toString
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Method Detail
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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
This method should not be called from outside the framework. Please useEdit#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.copy
to create a copy of a edit tree.- Specified by:
doCopy
in classTextEdit
- Returns:
- a copy of this edit.
- See Also:
TextEdit.copy()
,TextEdit.postProcessCopy(TextEditCopier)
,TextEditCopier
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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); }
accept
) takes care of invokingvisitor.preVisit(this)
andvisitor.postVisit(this)
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