'Alarm control panel' dialog don't honor supported features

[javicalle]

The request

The 'more-info' dialog for the 'alarm control panel', always show 2 bottons (alarm_arm_home and alarm_arm_away).
It will be great if the dialog can honor the device supported_features property and show only relevant buttons.

This case is different from the lovelace alarm-panel card, which allows you to configure the buttons that you want to show on the card (and they do not have to be all the actions available).

The alternatives

I'm not sure which way to go in this case.
My first impulse would be to follow the example of the MoreInfoCover and the CoverEntity, but it doesn't seem like a very common model.
I think the model is more in the line of using the supportsFeature function, but I get lost trying to follow the implementation. I think a good example candidate to follow may be MoreInfoVacuum

Additional information

Alarm control panel dialog:

• frontend/src/dialogs/more-info/controls/more-info-alarm_control_panel.js

  Lines 138 to 168 in 1b970e5

  	<div class="layout horizontal center-justified actions">
  	<template is="dom-if" if="[[_disarmVisible]]">
  	<mwc-button
  	outlined
  	class="disarm"
  	on-click="_callService"
  	data-service="alarm_disarm"
  	disabled="[[!_codeValid]]"
  	>
  	[[localize('ui.card.alarm_control_panel.disarm')]]
  	</mwc-button>
  	</template>
  	<template is="dom-if" if="[[_armVisible]]">
  	<mwc-button
  	outlined
  	on-click="_callService"
  	data-service="alarm_arm_home"
  	disabled="[[!_codeValid]]"
  	>
  	[[localize('ui.card.alarm_control_panel.arm_home')]]
  	</mwc-button>
  	<mwc-button
  	outlined
  	on-click="_callService"
  	data-service="alarm_arm_away"
  	disabled="[[!_codeValid]]"
  	>
  	[[localize('ui.card.alarm_control_panel.arm_away')]]
  	</mwc-button>
  	</template>
  	</div>

Alarm control Panel supported features attribute:

• https://github.com/home-assistant/core/blob/d587f134ca7d57bf2948c711fc9bd330aa48aa0c/homeassistant/components/alarm_control_panel/__init__.py#L170-L173

[Mincka]

Great suggestion. My alarm was wrongfully triggered recently because it was not activated in the proper mode from this dialog. I really wished that other available modes would be also shown in this dialog. In my case, I missed the arm_custom_bypass but all of them makes sense, including trigger that would allow us to get a "Panic" button in the dialog.

class AlarmControlPanelEntityFeature(IntEnum):
    """Supported features of the alarm control panel entity."""

    ARM_HOME = 1
    ARM_AWAY = 2
    ARM_NIGHT = 4
    TRIGGER = 8
    ARM_CUSTOM_BYPASS = 16
    ARM_VACATION = 32

[melyux]

Yeah I don't know why @zsarnett converted this to a discussion, it's a bug. The card shows the supported buttons while the more info dialog doesn't. There's a mismatch.

[karwosts]

See #15452

[Mincka]

Thank you!