Class UndoContext
java.lang.Object
org.eclipse.core.commands.operations.UndoContext
- All Implemented Interfaces:
IUndoContext
- Direct Known Subclasses:
ObjectUndoContext
A simple, lightweight undo context that can be used to tag any operation. It does not provided a specialized label. This class may be instantiated by clients. This class may also be subclassed.
- Since:
- 3.1
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptiongetLabel()
Get the label that describes the undo context.boolean
matches
(IUndoContext context) Return whether the specified context is considered a match for the receiving context.
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Constructor Details
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UndoContext
public UndoContext()
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Method Details
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getLabel
Get the label that describes the undo context. The default implementation returns the empty String. Subclasses may override.
- Specified by:
getLabel
in interfaceIUndoContext
- Returns:
- the label for the context.
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matches
Return whether the specified context is considered a match for the receiving context. When a context matches another context, operations that have the context are considered to also have the matching context. The default implementation checks whether the supplied context is identical to this context. Subclasses may override.
- Specified by:
matches
in interfaceIUndoContext
- Parameters:
context
- the context to be checked against the receiving context.- Returns:
true
if the receiving context can be considered a match for the specified context, andfalse
if it cannot.
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