Support translating number selector UoM (#26070)

src/components/ha-selector/ha-selector-number.ts

@@ -23,6 +23,9 @@ export class HaNumberSelector extends LitElement {
 
   @property() public helper?: string;
 
+  @property({ attribute: false })
+  public localizeValue?: (key: string) => string;
+
   @property({ type: Boolean }) public required = true;
 
   @property({ type: Boolean }) public disabled = false;
@@ -60,6 +63,14 @@ export class HaNumberSelector extends LitElement {
       }
     }
 
+    const translationKey = this.selector.number?.translation_key;
+    let unit = this.selector.number?.unit_of_measurement;
+    if (isBox && unit && this.localizeValue && translationKey) {
+      unit =
+        this.localizeValue(`${translationKey}.unit_of_measurement.${unit}`) ||
+        unit;
+    }
+
     return html`
       ${this.label && !isBox
         ? html`${this.label}${this.required ? "*" : ""}`
@@ -97,7 +108,7 @@ export class HaNumberSelector extends LitElement {
           .helper=${isBox ? this.helper : undefined}
           .disabled=${this.disabled}
           .required=${this.required}
-          .suffix=${this.selector.number?.unit_of_measurement}
+          .suffix=${unit}
           type="number"
           autoValidate
           ?no-spinner=${!isBox}

src/data/selector.ts

@@ -333,6 +333,7 @@ export interface NumberSelector {
     mode?: "box" | "slider";
     unit_of_measurement?: string;
     slider_ticks?: boolean;
+    translation_key?: string;
   } | null;
 }