Replace toggle_button_disable ctrller with generic toggle_control ctrller

- add enableIfPresent method in toggle_control_controller.js to handle enabling on toggle
- add testing in the corresponding spec
- replace in view previous ctrler with intended generic toggle-control

app/views/checkout/_voucher_section.html.haml

@@ -1,7 +1,7 @@
 %div#voucher-section
   .checkout-title
     = t("checkout.step2.voucher.apply_voucher")
-  .checkout-input{"data-controller": "toggle-button-disabled"}
+  .checkout-input{"data-controller": "toggle-control"}
     = form_with url: voucher_adjustments_path, model: @order, method: :post, data: { remote: true } do |form|
       - if voucher_adjustment.present?
         .two-columns-inputs.voucher
@@ -18,8 +18,8 @@
       - else
         .two-columns-inputs
           %div.checkout-input
-            = form.text_field :voucher_code, value: params.dig(:order, :voucher_code), data: { action: "input->toggle-button-disabled#inputIsChanged" }, placeholder: t("checkout.step2.voucher.placeholder"), class: "voucher"
+            = form.text_field :voucher_code, value: params.dig(:order, :voucher_code), data: { action: "input->toggle-control#enableIfPresent" }, placeholder: t("checkout.step2.voucher.placeholder"), class: "voucher"
             = form.error_message_on :voucher_code
 
           %div.checkout-input
-            = form.submit t("checkout.step2.voucher.apply"), disabled: true, class: "button cancel voucher-button", "data-disable-with": false, data: { "toggle-button-disabled-target": "button" }
+            = form.submit t("checkout.step2.voucher.apply"), disabled: true, class: "button cancel voucher-button", "data-disable-with": false, data: { "toggle-control-target": "control" }

app/webpacker/controllers/toggle_control_controller.js

@@ -17,6 +17,14 @@ export default class extends Controller {
     }
   }
 
+  enableIfPresent(event) {
+    const input = event.currentTarget;
+    const enable = !!this.#inputValue(input);
+
+    this.controlTargets.forEach((target) => {
+      target.disabled = !enable;
+    });
+  }
   //todo: can a new method disableIfBlank replace ButtonDisabledController?
   //todo: can a new method toggleDisplay replace ToggleController?
   //todo: can toggleDisplay with optional chevron-target replace RemoteToggleController?

spec/javascripts/stimulus/toggle_control_controller_test.js

@@ -61,4 +61,31 @@ describe("ToggleControlController", () => {
       });
     });
   });
+  describe("#enableIfPresent", () => {
+    describe("with input", () => {
+      beforeEach(() => {
+        document.body.innerHTML = `<div data-controller="toggle-control">
+          <input id="input" value="" data-action="input->toggle-control#enableIfPresent" />
+          <input id="control" data-toggle-control-target="control">
+        </div>`;
+      });
+
+      it("Enables when input is filled", () => {
+        input.value = "a"
+        input.dispatchEvent(new Event("input"));
+
+        expect(control.disabled).toBe(false);
+      });
+
+      it("Disables when input is emptied", () => {
+        input.value = "test"
+        input.dispatchEvent(new Event("input"));
+
+        input.value = ""
+        input.dispatchEvent(new Event("input"));
+
+        expect(control.disabled).toBe(true);
+      });
+    });
+  });
 });