IlvManagerCommand Class Reference

Manager command class. More...

#include <ilviews/manager/commands.h>

Inheritance diagram for IlvManagerCommand:

Public Member Functions
	IlvManagerCommand (IlvManager *manager)
	Constructor. More...
IlvManager *	getManager () const
	Returns the manager. More...

Detailed Description

Manager command class.

Library: ilvmgr

The class IlvManagerCommand is a subclass of IlvCommand that makes the undo mechanism provided in earlier versions of Rogue Wave Views compatible with the command history mechanism provided in Rogue Wave Views 4.0. It is provided for compatibility purposes only. New command classes should inherit directly from IlvCommand and not from IlvManagerCommand. With the command history mechanism, we recommend that you let the manager and the commands store the various states and apply the modifications in the appropriate order, instead of instantiating commands and adding them to the command history. Doing so will allow you to encapsulate the result of commands in a more efficient way and redo them more easily.
For example, if you want to change the layer of an object and record this change, we suggest that you proceed like this:

myManager->addCommand(new IlvChangeLayerCommand(myManager, newLayer, 1, &myObject);

and not as shown below, which is more complex and inaccurate:

int myOldLayer = myManager->getLayer(myObject);
myManager->remove(myObject, IlFalse);
myManager->addObject(myObject, newLayer);
myManager->addCommand(new IlvChangerLayerCommand(myManager, newLayer, 1, &myObject, &myOldLayer, 0));

See also

IlvGrapher, IlvManager, IlvCommandHistory

Constructor & Destructor Documentation

IlvManagerCommand()

IlvManagerCommand::IlvManagerCommand

(

IlvManager *

manager

)

Constructor.

Creates a new instance of IlvManagerCommand for a given manager.

Parameters

manager

A pointer to the manager.

Member Function Documentation

getManager()

IlvManager* IlvManagerCommand::getManager

(

)

const

Returns the manager.

Returns

The manager for which this command has been created.