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org.eclipse.emf.edit.provider
Class WrapperItemProvider.SimpleCopyCommand

java.lang.Object
  org.eclipse.emf.common.command.AbstractCommand
      org.eclipse.emf.edit.command.AbstractOverrideableCommand
          org.eclipse.emf.edit.provider.WrapperItemProvider.SimpleCopyCommand

All Implemented Interfaces:

Command, OverrideableCommand

Enclosing class:

WrapperItemProvider

public abstract class WrapperItemProvider.SimpleCopyCommand

extends AbstractOverrideableCommand

A command base class for copying a simple value and the wrapper. This is useful when the value isn't able provide an adapter to return a copy command, itself. This class just provides the scaffolding; concrete subclasses must implement copy to do the copying.

Nested Class Summary

Nested classes inherited from class org.eclipse.emf.common.command.AbstractCommand

AbstractCommand.NonDirtying

Field Summary

protected Collection	affectedObjects
protected Collection	result

Fields inherited from class org.eclipse.emf.edit.command.AbstractOverrideableCommand

domain, overrideCommand

Fields inherited from class org.eclipse.emf.common.command.AbstractCommand

description, isExecutable, isPrepared, label

Constructor Summary

WrapperItemProvider.SimpleCopyCommand(EditingDomain domain)
Creates an instance for the given domain.

Method Summary

abstract IWrapperItemProvider	copy() Concrete subclasses must implement this to copy and return the value and wrapper.
void	doExecute() Calls copy() to do the copying, disposes the copy, and sets it to be the result of the command.
Collection	doGetAffectedObjects() Returns a list containing only the original wrapper itself.
Collection	doGetResult() If the command has executed, returns a list containing only the copy of the wrapper.
void	doRedo() Does nothing.
void	doUndo() Does nothing.
protected boolean	prepare() Returns true; this command can requires now preparation and can always be executed.

Methods inherited from class org.eclipse.emf.edit.command.AbstractOverrideableCommand

canExecute, canUndo, dispose, doCanExecute, doCanUndo, doDispose, doGetChildrenToCopy, doGetDescription, doGetLabel, execute, getAffectedObjects, getChildrenToCopy, getDescription, getDomain, getLabel, getOverride, getOwnerList, getResult, redo, setOverride, toString, undo

Methods inherited from class org.eclipse.emf.common.command.AbstractCommand

chain, setDescription, setLabel

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.eclipse.emf.common.command.Command

chain

Field Detail

result

protected Collection result

affectedObjects

protected Collection affectedObjects

Constructor Detail

WrapperItemProvider.SimpleCopyCommand

public WrapperItemProvider.SimpleCopyCommand(EditingDomain domain)

Creates an instance for the given domain.

Method Detail

prepare

protected boolean prepare()

Returns true; this command can requires now preparation and can always be executed.

Overrides:

prepare in class AbstractCommand

Returns:

whether the command is executable.

doExecute

public void doExecute()

Calls copy() to do the copying, disposes the copy, and sets it to be the result of the command. Since the copy has not been created within the viewed model, it should never do any kind of notification, which is why it is immediately disposed.

Specified by:

doExecute in interface OverrideableCommand

Specified by:

doExecute in class AbstractOverrideableCommand

copy

public abstract IWrapperItemProvider copy()

Concrete subclasses must implement this to copy and return the value and wrapper.

doUndo

public void doUndo()

Does nothing.

Specified by:

doUndo in interface OverrideableCommand

Specified by:

doUndo in class AbstractOverrideableCommand

doRedo

public void doRedo()

Does nothing.

Specified by:

doRedo in interface OverrideableCommand

Specified by:

doRedo in class AbstractOverrideableCommand

doGetResult

public Collection doGetResult()

If the command has executed, returns a list containing only the copy of the wrapper.

Specified by:

doGetResult in interface OverrideableCommand

Overrides:

doGetResult in class AbstractOverrideableCommand

doGetAffectedObjects

public Collection doGetAffectedObjects()

Returns a list containing only the original wrapper itself.

Specified by:

doGetAffectedObjects in interface OverrideableCommand

Overrides:

doGetAffectedObjects in class AbstractOverrideableCommand