Remove cclayer once all actions finished on its children - cocos2d-iphone

Question

I have a CCLayer which has multiple children (Sprites, CCMenuItemImages ets). And these children are having their children (mostly CCLabel*** or CCMenuItemImages). So I want to fade out the all the grand-children and children of the layer and then once all are faded I want to remove the CCLayer.
I am able to apply fade action to the hierarchy. But if I do [CCLayer removeFromParentWithCleanup:YES], then it removes immediately while still some children are running with fade action.
So my question is how can i remove the parent layer once all the gran-children and children are faded (opacity = 0).
Edit: Here is a code snippet
for(CCNode *node in itemLayer.children)
{
for(CCSprite *sprite in parentLayer.children)
{
for(id item in sprite.children)
[item runAction:[CCFadeTo actionWithDuration:2.5f opacity:0]];
[sprite runAction:[CCFadeTo actionWithDuration:2.5f opacity:0]];
}
}
itemLayer is the Parent CCLayer which has a CCNode *node. node is having children and each children have their children. So I want to remove the node and its parent itemLayer once all the actions completes on children and gran-children. How to do this?

Answer 1

Make your top level container a CCNodeRGBA and set in the init :
self.cascadeColorEnabled=YES;
self.cascadeOpacityEnabled=YES;
self.opacity=255;
When you run a CCFadeAction on that, the node will do all the forklifting of cascading down to children and grand-children. At the end of the fade action,
id fade = [CCFadeTo actionWithDuration:2.5 opacity:0];
id done = [CCCallBlock actionWithBlock:^{
[self removeFromParentAndCleanup:YES];
// plus whatever else you see fit
}];
id seq = [CCSequence actions:fade, done, nil];
[self runAction:seq];
ob cit : from memory, not compiled nor tested, YMMV