[yew-devel] [RFC yew-comp/yew-widget-toolkit 0/2] add helpers to get a record via a Selection from a Store

[Shannon Sterz <s.sterz@proxmox.com>]

a very common pattern is to use a `Store` combined with a `Selection`.
however, to get the record from a `Store` that has the same `Key` as is
selected by the `Selection` is a little cumbersome as it requires
dealing with several optional values. so many components implement a
helper for that. it usually looks like this:

```rust
fn get_selected_record(&self) -> Option<ApiToken> {
    self.selection
        .selected_key()
        .and_then(|key| self.store.read().lookup_record(&key).cloned())
}

let Some(record) = self.get_selected_record() else {
    return false;
}
```

to avoid duplicating this effort in every such component add new helper
methods to the `Store`. they each take a `Selection` and either return
an optional reference or an optional clone of the selected record.
turning the above into:

```rust
let Some(record) = self.store.selected_record(&self.selection) else {
    return false;
}
```

the second commit in this series is mostly for demonstrative purposes.
sending this as an rfc as i am not sure if the naming of these functions
is ideal or whether we want to add both helpers (instead of just one of
them).

proxmox-yew-widget-toolkit:

Shannon Sterz (1):
  store: add helper methods to extract a record via a selection

 src/state/store.rs | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)


proxmox-yew-comp:

Shannon Sterz (1):
  token panel: use new `selected_record` helper

 src/token_panel.rs | 11 ++---------
 1 file changed, 2 insertions(+), 9 deletions(-)


Summary over all repositories:
  2 files changed, 19 insertions(+), 10 deletions(-)

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