Package org.eclipse.text.edits
Class UndoEdit
java.lang.Object
org.eclipse.text.edits.TextEdit
org.eclipse.text.edits.UndoEdit
This class encapsulates the reverse changes of an executed text
edit tree. To apply an undo memento to a document use method
apply(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.
-
Field Summary
Fields inherited from class org.eclipse.text.edits.TextEdit
CREATE_UNDO, NONE, UPDATE_REGIONS
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Method Summary
Modifier and TypeMethodDescriptionprotected 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 Details
-
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. -
accept0
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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