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org.eclipse.gmf.runtime.emf.type.core.requests
Class DestroyElementRequest

java.lang.Object
  extended by 

org.eclipse.gmf.runtime.emf.type.core.requests.AbstractEditCommandRequest
      extended by 

org.eclipse.gmf.runtime.emf.type.core.requests.DestroyRequest
          extended by 
org.eclipse.gmf.runtime.emf.type.core.requests.DestroyElementRequest
All Implemented Interfaces:
IEditCommandRequest 
public class DestroyElementRequest

extends 
DestroyRequest

Request to destroy a model element.

Field Summary
static java.lang.String DESTROY_DEPENDENTS_REQUEST_PARAMETER
          Request parameter specifying the associated destroy-dependents request that is propagated recursively through the processing of destroy requests for an element, its contents, and its dependents.
static java.lang.String INITIAL_ELEMENT_TO_DESTROY_PARAMETER
          Request parameter specifying the initial element that was requested to be destroyed.
 
Fields inherited from interface org.eclipse.gmf.runtime.emf.type.core.requests. IEditCommandRequest
REPLACE_DEFAULT_COMMAND
 
Constructor Summary
DestroyElementRequest (boolean confirmationRequired)
          Constructs a new request to destroy a model element.
DestroyElementRequest (org.eclipse.emf.ecore.EObject elementToDestroy, boolean confirmationRequired)
          Constructs a new request to destroy a model element.
DestroyElementRequest (org.eclipse.emf.transaction.TransactionalEditingDomain editingDomain, boolean confirmationRequired)
          Constructs a new request to destroy a model element.
DestroyElementRequest (org.eclipse.emf.transaction.TransactionalEditingDomain editingDomain, org.eclipse.emf.ecore.EObject elementToDestroy, boolean confirmationRequired)
          Constructs a new request to destroy a model element.
 
Method Summary
  DestroyElementCommand getBasicDestroyCommand ()
          Obtains a command to override the basic destroy command that would be created by default by the edit helper to perform the object destruction.
 org.eclipse.emf.ecore.EObject getContainer ()
          Gets the container of the element to be destroyed.
 java.lang.Object getEditHelperContext ()
          Extends the inherited method to return the default element type when destroying a root element of a resource.
 org.eclipse.emf.transaction.TransactionalEditingDomain getEditingDomain ()
          Derives the editing domain from the object to be destroyed, if it hasn't already been specified.
 org.eclipse.emf.ecore.EObject getElementToDestroy ()
          Gets the element to be destroyed.
 void setBasicDestroyCommand ( DestroyElementCommand command)
          Assigns a command to override the basic destroy command that would be created by default by the edit helper to perform the object destruction.
 void setElementToDestroy (org.eclipse.emf.ecore.EObject elementToDestroy)
          Sets the element to be destroyed.
 
Methods inherited from class org.eclipse.gmf.runtime.emf.type.core.requests. DestroyRequest
getDefaultLabel, getElementsToEdit, isConfirmationRequired, setConfirm
 
Methods inherited from class org.eclipse.gmf.runtime.emf.type.core.requests. AbstractEditCommandRequest
addParameters, getClientContext, getLabel, getParameter, getParameters, setClientContext, setEditingDomain, setLabel, setParameter
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

DESTROY_DEPENDENTS_REQUEST_PARAMETER

public static final java.lang.String DESTROY_DEPENDENTS_REQUEST_PARAMETER
Request parameter specifying the associated destroy-dependents request that is propagated recursively through the processing of destroy requests for an element, its contents, and its dependents.

The expected parameter value is an instance of type DestroyDependentsRequest.

See Also:
Constant Field Values

INITIAL_ELEMENT_TO_DESTROY_PARAMETER

public static final java.lang.String INITIAL_ELEMENT_TO_DESTROY_PARAMETER
Request parameter specifying the initial element that was requested to be destroyed.

The expected parameter value is an instance of type EObject, or null.

See Also:
Constant Field Values
Constructor Detail

DestroyElementRequest

public DestroyElementRequest(org.eclipse.emf.transaction.TransactionalEditingDomain editingDomain,
                             boolean confirmationRequired)
Constructs a new request to destroy a model element.

Parameters:
editingDomain - the editing domain in which I am requesting to make model
confirmationRequired - true if the user should be prompted to confirm the element deletion, false otherwise.

DestroyElementRequest

public DestroyElementRequest(org.eclipse.emf.transaction.TransactionalEditingDomain editingDomain,
                             org.eclipse.emf.ecore.EObject elementToDestroy,
                             boolean confirmationRequired)
Constructs a new request to destroy a model element.

Parameters:
editingDomain - the editing domain in which I am requesting to make model
elementToDestroy - the element to be destroyed
confirmationRequired - true if the user should be prompted to confirm the element deletion, false otherwise.

DestroyElementRequest

public DestroyElementRequest(boolean confirmationRequired)
Constructs a new request to destroy a model element. The editing domain will be derived from the result of getElementToDestroy().

Parameters:
confirmationRequired - true if the user should be prompted to confirm the element deletion, false otherwise.

DestroyElementRequest

public DestroyElementRequest(org.eclipse.emf.ecore.EObject elementToDestroy,
                             boolean confirmationRequired)
Constructs a new request to destroy a model element.

Parameters:
elementToDestroy - the element to be destroyed
confirmationRequired - true if the user should be prompted to confirm the element deletion, false otherwise.
Method Detail

getElementToDestroy

public org.eclipse.emf.ecore.EObject getElementToDestroy()
Gets the element to be destroyed.

Returns:
the element to be destroyed

setElementToDestroy

public void setElementToDestroy(org.eclipse.emf.ecore.EObject elementToDestroy)
Sets the element to be destroyed.

Parameters:
elementToDestroy - the element to be destroyed

getContainer

public org.eclipse.emf.ecore.EObject getContainer()
Description copied from class: DestroyRequest
Gets the container of the element to be destroyed.

Specified by:
getContainer in class DestroyRequest
Returns:
the container of the element to be destroyed

getEditHelperContext

public java.lang.Object getEditHelperContext()
Extends the inherited method to return the default element type when destroying a root element of a resource.

Specified by:
getEditHelperContext in interface IEditCommandRequest
Overrides:
getEditHelperContext in class DestroyRequest
Returns:
the edit helper context for this request

getEditingDomain

public org.eclipse.emf.transaction.TransactionalEditingDomain getEditingDomain()
Derives the editing domain from the object to be destroyed, if it hasn't already been specified.

Specified by:
getEditingDomain in interface IEditCommandRequest
Overrides:
getEditingDomain in class AbstractEditCommandRequest
Returns:
the editing domain

setBasicDestroyCommand

public void setBasicDestroyCommand(
DestroyElementCommand command)
Assigns a command to override the basic destroy command that would be created by default by the edit helper to perform the object destruction. This can be used by before advice to replace the basic destruction behaviour.

This is similar to the facility provided via the IEditCommandRequest.REPLACE_DEFAULT_COMMAND parameter for indicating that an advice has taken over the "instead" command, except that this is applies only to the basic single-object destruction, whereas the edit helper's command also performs recursion and destruction of dependents.

Parameters:
command - the basic destroy command to use for destruction of an element, or null to use the edit helper's default implementation
See Also:
AbstractEditHelper#getBasicDestroyElementCommand(DestroyElementRequest)

getBasicDestroyCommand

public 
DestroyElementCommand getBasicDestroyCommand()
Obtains a command to override the basic destroy command that would be created by default by the edit helper to perform the object destruction.

Returns:
the basic destroy command to use for destruction of an element, or null to use the edit helper's default implementation
See Also:
setBasicDestroyCommand(DestroyElementCommand), AbstractEditHelper#getBasicDestroyElementCommand(DestroyElementRequest)
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