twoman.eve

# [Two-Man Rule](https://en.wikipedia.org/wiki/Two-man_rule)
## Model
Create two locks.
```
commit @model
  [#lock name: "Lock 1", locked: true]
  [#lock name: "Lock 2", locked: true]
```

Unlock locks when their key is turned.
```
search @event @model
  [#turn-key name]
  lock = [#lock name]
commit @model
  lock.locked := false
```

Emit an event when both locks have been unlocked.
```
search @model
  [#lock name: "Lock 1", locked: false]
  [#lock name: "Lock 2", locked: false]
commit @event
  [#all-unlocked]
```

## View
Display buttons for each of the locks.
```
search @model
  [#lock name locked]
  state = if locked = true then "Locked" else "Unlocked"
bind @browser
  [#button name, text: "{{name}}: {{state}}", sort: name]
```

When a button is clicked, turn its key.
```
search @event @browser
  [#click element: [#button name]]
commit @event
  [#turn-key name]
```

Display a crazy awesome message when everything's unlocked
```
search @event
  [#all-unlocked]
commit @browser
  [#h1 text: "The door is open!", sort: "ZZZ"]
```