fix: Clear the initialized condition state when the card is not usable (#2646)
The `initialized` state (used in conditions/triggers) was written once and never cleared, so it meant "has this card ever been initialized" while everything reading it took it as "is this card usable now". Home Assistant takes a card off the page and puts it back whenever its dashboard tab is left and returned to, so the card initialized again while the state claimed it was initialized throughout: `trigger: initialized` fired once per card rather than once per startup, and automations were dropped in between. The card lifecycle is now an explicit state machine (`SessionManager`), the only writer of `initialized`, which separates a card that is starting up from one initializing part of itself again while it runs. A new `ever` parameter (conditions/triggers) selects the old latched behaviour. `remote_control` uses that parameter to keep its two camera priorities correct under repeated starts. With `camera_priority: entity` the card now re-reads the entity every time it starts, so a camera selected while the card was away is picked up on return. With `camera_priority: card` the card writes the entity on its first start only, unchanged, since repeating that write would overwrite a camera the user had selected. Closes: #2642 BREAKING CHANGE: `condition: initialized` is now `false` whenever the card is not usable, and `trigger: initialized` fires each time the card starts up rather than only the first time. Set `ever: true` on either to keep the previous behaviour.
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@@ -295,9 +295,16 @@ triggers:
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## `initialized`
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Matches whether the card has finished initializing. As a **condition**, true
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once the card is initialized; as a **trigger**, fires when the card initializes
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(useful for running an [automation](./automations.md) on card start).
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Matches whether the card is up and usable.
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A card starts more than once: returning to its dashboard tab, restarting Home
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Assistant, and recovering from an error all start it again. It stops being
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started when it is taken off the page, when the Home Assistant connection is
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lost, or when starting up fails.
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As a **condition**, `true` while the card has finished starting up -- usable,
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not merely present. As a **trigger**, fires each time the card finishes starting
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up, useful for running an [automation](./automations.md) on card start.
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```yaml
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# As a condition:
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@@ -308,9 +315,10 @@ triggers:
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- trigger: initialized
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```
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| Parameter | Description |
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| ----------------------- | ---------------------- |
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| `condition` / `trigger` | Must be `initialized`. |
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| Parameter | Default | Description |
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| ----------------------- | ------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
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| `condition` / `trigger` | | Must be `initialized`. |
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| `ever` | `false` | Match whether the card is started now (`false`), or whether it has _ever_ finished starting up (`true`). A trigger using `true` fires on a card's first start only, and not on later ones (e.g. returning to a dashboard tab previously visited). Reloading the page, a Home Assistant restart or changing the card config (excluding [overrides](./overrides.md)) will cause a brand new card to be (unavoidably) built. |
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## `interaction`
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@@ -785,6 +793,7 @@ conditions:
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- condition: fullscreen
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fullscreen: true
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- condition: initialized
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ever: false
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- condition: interaction
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interaction: true
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- condition: key
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@@ -863,6 +872,7 @@ triggers:
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- trigger: fullscreen
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fullscreen: true
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- trigger: initialized
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ever: false
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- trigger: interaction
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interaction: true
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- trigger: key
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