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org.eclipse.text.edits
Class UndoEdit
java.lang.Object
org.eclipse.text.edits.TextEdit
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 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.
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Since:
- 3.0
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Restriction:
- This class is not intended to be instantiated by clients.
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Method Summary
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protected void
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accept0
(
TextEditVisitor visitor)
Accepts the given visitor on a type-specific visit of the current edit. |
protected
TextEdit
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doCopy
()
Creates and returns a copy of this edit. |
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Methods inherited from class org.eclipse.text.edits.
TextEdit
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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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doCopy
protected
TextEdit doCopy()
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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.
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Specified by:
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doCopy
in class
TextEdit
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Returns:
- a copy of this edit.
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See Also:
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TextEdit.copy(),
TextEdit.postProcessCopy(TextEditCopier),
TextEditCopier
accept0
protected void accept0(
TextEditVisitor visitor)
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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).
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Specified by:
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accept0
in class
TextEdit
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Parameters:
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visitor - the visitor object
Guidelines for using Eclipse APIs.
Copyright (c) Eclipse contributors and others 2000, 2008. All rights reserved.
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