Can I view some collections topology?
In theory, yes.
You can view a collection or a universe, but please understand I haven't actually seen this because I can't get the applet to launch.
Here is how you find your Global modelhandle (which you need for the search)
1) Log into CLI for the landscape you wish to search
2) Your global collection model type handle is 0x10474, so I recommend running the following to find the mh for the collection you want
>show models |grep 0x10474
3) The returned list will show all global collections. Let's say you have one called "Cristian" with mh=0x90a4aa (made up...don't try that handle..haha). The far left number is your actual model handle (per collection), and the right number (before word "GlobalCollection") will be 0x10474 as this, again, is the model handle for "GlobalCollection"
4) Last you take the mh as the search criteria for your search, resulting in the following url:
(replace with your server name and you use to connect to oneclick)
From our example, this would connect to server "spectrumserver" on port 8888 and launch topology.applet against our fake/example mh of 0x90a4aa for "Cristian" Global Collection.
This is how it should work, but I'm still dealing with javaws issues, so please let us know if that works for you.