olua.lib
Class Proxy

olua.lib.Object
└─ olua.lib.Proxy

I'm useful for particular constructions where you want one object to act like another object based on runtime considerations. For example, consider a button in a web application: a text-only button may be implemented as a simple HTML button, while a button with an image may have to be implemented as a complex DHTML object. My subclassing me, you can create a generic FlexibleButton class that can examine its parameters at run time and then become either an HTMLButton or a ImageButton by instantiating the appropriate object and setting it as the proxy target.

- forwardInvocation: message

Handles a message on me.

Don't call this; it is used by the runtime.

Parameters:

message - the message

Returns:

whatever the message returns

- initWithTarget: newtarget

Initialises me to point at the given target.

Parameters:

newtarget - the new target

Returns:

the receiver

- isProxy

Test whether I am a proxy.

I am a proxy.

Returns:

true

- performSelector: selector withArgs: args

Calls a method on the target.

Parameters:

selector - the (mangled) selector
args - an array of arguments

Returns:

whatever the method returns

- proxyTarget

Returns my current target.

Returns:

the current target

- respondsToSelector: selector

Tests whether I respond to a given selector.

The default implementation passes the request on to the target.

Parameters:

selector - the (mangled) selector

Returns:

true or false

- setProxyTarget: newtarget

Changes my current target.

Parameters:

newtarget - the new target

Returns:

the old target

- toString

Returns an identifier string describing me.

Returns:

a string