satya - Wed Nov 07 2012 10:46:37 GMT-0500 (Eastern Standard Time)

Refer to a composite pattern if you wish here

Refer to a composite pattern if you wish here

satya - Wed Nov 07 2012 10:46:54 GMT-0500 (Eastern Standard Time)

Views and view groups in android form a composite pattern

Views and view groups in android form a composite pattern

satya - Wed Nov 07 2012 10:48:18 GMT-0500 (Eastern Standard Time)

For a given method 'm1()' that is applicable on a view you can see a 'dispatchm1()'

m1()
  onM1()
  dispatchM1()

satya - Wed Nov 07 2012 10:49:25 GMT-0500 (Eastern Standard Time)

An example

draw() {
  ...
  onDraw() //myself
  dispatchDraw() //children
  ....
}

satya - Wed Nov 07 2012 10:51:17 GMT-0500 (Eastern Standard Time)

Android dispatch pattern

Android dispatch pattern: wonder if anyone else is talking about this!

Search for: Android dispatch pattern

satya - Wed Nov 07 2012 10:53:52 GMT-0500 (Eastern Standard Time)

based on this a collective node in the composite can do

ViewGroup {

onDraw() { implment own draw };

override
dispatchDraw() {
  for each child
     child.draw()
}
}

satya - Wed Nov 07 2012 10:54:49 GMT-0500 (Eastern Standard Time)

So now you could refine the pattern a bit more

m1()
  onM1()
  dispatchM1()
    child.m1()

satya - Wed Nov 07 2012 10:58:17 GMT-0500 (Eastern Standard Time)

Here is a list of (Gang of Four) design patterns

Here is a list of (Gang of Four) design patterns

One should keep these handy, especially the tricksies like the visitor!