Feature Request: step size from a helper

[marcelvandorp]

Hi,
I want to be able to change a number quickly from a tablet, and this card works great. But I would like the step size to be flexible.
I created an input_select helper (with values like '100','10','0.1','-1')
I am not a good JS programmer, and I find the documentation of the hass object too complicated for me, but I did look at the code. Around line 32 is the relevant part (I think):

	// WIP: If config.step has the name of an entity, then use it's value as the step size
	if(this.config.step in hass.states){ this.config.step = hass.states[this.config.step].state };
	// end WIP - this is just before original line 32
	if(this.config.step === undefined){ this.config.step=this.stateObj.attributes.step;}

The second line is the only line of code, but I am not sure if I call the hass methods correctly.
The last line is unchanged. What I try to do, is:
config.step = => use step value on thisObj (current functionality)
config.step = => use the as the step size (current functionality)
config.step = <hass.entity> => use the value of this hass entity as the step value (NEW)

I want to use this to adjust the offsets for a S0PCM5 module, which counts pulses from 5 power meters. Sometimes a pulse or two is missed, and I want an easy way to correct this (on a phone or tablet). So the plan is to use one input_select to determine the step size, and use this as the step size for five numberbox-card entities. I use this same helper value as secondary info for visual feedback to the user (existing functionality).

For a foolproof solution, there should be some sanity checking on the content of the helper (it should be numerical), or perhaps defaults to 0 or undefined if the value is unusable.

Is such an addition easy to implement?

Regards,
Marcel

[marcelvandorp]

Okay, I figured it out. In the render() function the step size is determined (line 32):
if(this.config.step === undefined){ this.config.step=this.stateObj.attributes.step;}
I added below this line the following oneliner (two lines if you also count the comment):

// New Feature: Get step size from another entity if this contains a valid number (float) if(this.config.step_entity in this._hass.states && !isNaN(parseFloat(this._hass.states[this.config.step_entity].state))) {this.config.step=this._hass.states[this.config.step_entity].state;}

This will retrieve the step-size from another entity.
My card config is:

type: custom:numberbox-card border: true entity: input_number.test secondary_info: increment value with %input_select.factor:state speed: '500' step_entity: input_select.factor step: 3

The value of 'step:' is only used if the step_entity doesn't exist or doesn't contain a number
As you can see, I added the step-size entity to the secondary_info, to inform the user of the current step size

Can this be added to the 'official' code of this extension?

[htmltiger]

Thanks, I have added this in the new version