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oracle.ide.cmd
Class PropertySetCommand

java.lang.Object
oracle.ide.controller.Command
oracle.ide.cmd.PropertySetCommand

public abstract class PropertySetCommand

extends Command

The PropetySetCommand class provides a skeleton implemention for applying a property set, handling the undoing of the property set and sending out all relevant notifications. Subclass implemenations are responsible for actually applying the value to the live object.

Field Summary

protected java.lang.Object	origin
protected java.lang.String	property
protected java.lang.Object[]	targets

Fields inherited from class oracle.ide.controller.Command

CANCEL, context, EXECUTING, MULTI_NODE, NO_CHANGE, NO_UNDO, NORMAL, OK, type

Constructor Summary

protected	PropertySetCommand(java.lang.Object origin, java.lang.Object[] targets, java.lang.String property, java.lang.Object oldValue, java.lang.Object newValue) Constructor.
protected	PropertySetCommand(java.lang.Object origin, java.lang.Object target, java.lang.String property, java.lang.Object oldValue, java.lang.Object newValue) Constructor.

Method Summary

int	doit() Assign the new value to the object and send out proper notification.
protected abstract void	setValue(java.lang.Object newValue) Perform the actual property setting.
int	undo() Restores the object to its previous state.

Methods inherited from class oracle.ide.controller.Command

getAffectedNodes, getContext, getData, getId, getName, getType, isGlobal, setContext, setData

Methods inherited from class java.lang.Object

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

Field Detail

origin

protected java.lang.Object origin

targets

protected java.lang.Object[] targets

property

protected java.lang.String property

Constructor Detail

PropertySetCommand

protected PropertySetCommand(java.lang.Object origin,
                             java.lang.Object target,
                             java.lang.String property,
                             java.lang.Object oldValue,
                             java.lang.Object newValue)

Constructor.

Parameters:

origin - Origin of the action to be used in UpdateMessage instance.

target - Object upon which the command should be performed.

property - the name of the property whose value is about to change.

oldValue - the current value of the property.

newValue - the new value to apply.

PropertySetCommand

protected PropertySetCommand(java.lang.Object origin,
                             java.lang.Object[] targets,
                             java.lang.String property,
                             java.lang.Object oldValue,
                             java.lang.Object newValue)

Constructor.

Parameters:

origin - Origin of the action to be used in UpdateMessage instance.

targets - Objects upon which the command should be performed.

property - the name of the property whose value is about to change.

oldValue - the current value of the property.

newValue - the new value to apply.

Method Detail

setValue

protected abstract void setValue(java.lang.Object newValue)
                          throws java.lang.Exception

Perform the actual property setting.

Throws:

java.lang.Exception

doit

public int doit()
         throws java.lang.Exception

Assign the new value to the object and send out proper notification.

Specified by:

doit in class Command

Throws:

java.lang.Exception

undo

public int undo()
         throws java.lang.Exception

Restores the object to its previous state.

Overrides:

undo in class Command

Throws:

java.lang.Exception

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