Propagate Component menu selections through children

Unity Engine
1

I’ve got an object with many children, and unfortunately selecting any Component item (from the Component menu) will only add it to the selected object. Is there any way to get this to propagate through all child objects ?

I’ve tried using :

@MenuItem ("GameObject/Toggle Active Recursively %g")
 
static function ToggleActiveRecursively() {
	for (var currentTransform : Transform in Selection.transforms)
	{
		currentTransform.gameObject.AddComponent("Rigidbody");
		currentTransform.gameObject.AddComponent("BoxCollider");
		Debug.Log("Done");
	}
}
 
// The menu item will be disabled if no transform is selected.
@MenuItem ("GameObject/Toggle Active Recursively %g", true)
 
static function ValidateToggleActiveRecursively() : boolean {
	return Selection.activeTransform;
}

But it only sets the components for the parent object.

2

Try this. It adds a component recursively by name and checks for duplicates.

class AddComponentsRecursively extends ScriptableWizard {
	
	var componentName : String = "";
	
	@MenuItem ("GameObject/Add Component Recursively...")
	
	static function AddComponentsRecursivelyItem() {
		ScriptableWizard.DisplayWizard("Add Component Recursively", AddComponentsRecursively, "Add", "");
	}
	
	//Main function
	function OnWizardCreate() {
		var total : int = 0;
		for (var currentTransform : Transform in Selection.transforms) { 
	      total += RecurseAndAdd(currentTransform, componentName);
		}
		if (total == 0)
			Debug.Log("No components added.");
		else
			Debug.Log(total + " components of type \"" + componentName + "\" created.");
	}
	
	function RecurseAndAdd(parent : Transform, componentToAdd : String) : int {
		//keep count
		var total : int = 0;
		//add components to children
		for (var child : Transform in parent) {
			total += RecurseAndAdd(child, componentToAdd);
		}
		//add component to parent
		var existingComponent : Component = parent.GetComponent(componentToAdd);
		if (!existingComponent) {
			parent.gameObject.AddComponent(componentToAdd);
			total++;
		}
		
		return total;
	}
	//Set the help string
	function OnWizardUpdate () {  
	    helpString = "Specify the exact name of the component you wish to add:";
	}
	
	// The menu item will be disabled if no transform is selected. 
	@MenuItem ("GameObject/Add Component Recursively...", true) 

	static function ValidateMenuItem() : boolean { 
	   return Selection.activeTransform; 
	}
}