tiling_wm is a simple window management component for use with in-tree product sessions such as workbench_session. It presents all views adjacent to one another, in a tiled, mosaic layout. Views can be added to and removed from the session and focus transfers when the user interacts with a new view.
workbench_eng productMake sure to include in your gn build args the url to the view(s) you would like to add, e.g:
fx set workbench_eng.x64 --release --with //src/ui/examples:flatland-examples
Views can be added with ffx session add <url> [--name <name>]. Including --name is optional but will be useful if you later want to remove the view. For example:
ffx session add fuchsia-pkg://fuchsia.com/flatland-examples#meta/simplest-app-flatland.cm --name simple_view
Views can be removed by id using ffx session remove <child_name>. Each view has a unique child_name. If --name was specified when the view was added, then that will be its child_name. If you did not give the view a name when adding it, then you will have to find its identifier in fx log. When you initially add the view, a message will be logged, similar to this one:
[00336.146069][element_manager] INFO: launch_v2_element child_url=fuchsia-pkg://fuchsia.com/flatland-examples#meta/simplest-app-flatland.cm child_name=0lonupvr6iyxnzj8 collection=elements
Look for child_name (in this case 0lonupvr6iyxnzj8) and use that id to remove the view.
tiling_wm fills a few roles in the Fuchsia ecosystem: