Removing Control from form if it's destroyed.

This gets it out of the validation stream and appears to resolve this issues document in MUSIC 1339.

Author: JoshDSommer

source/components/inputs/input.tests.ts

@@ -10,6 +10,7 @@ interface IFormMock {
 
 interface IControlGroupMock {
 	addControl: sinon.SinonSpy;
+	removeControl: sinon.SinonSpy;
 }
 
 interface IGuidMock {
@@ -29,7 +30,7 @@ describe('InputComponent', (): void => {
 
 	beforeEach((): void => {
 		rlForm = {
-			form: { addControl: sinon.spy() },
+			form: { addControl: sinon.spy(), removeControl: sinon.spy() },
 		};
 		guid = { random: sinon.spy() };
 
@@ -148,4 +149,11 @@ describe('InputComponent', (): void => {
 
 		expect(input.hidePlaceholder).to.be.true;
 	});
+
+	it('should remove the control from the form when ngOnDestroy is called', () => {
+		input.ngOnDestroy();
+
+		sinon.assert.calledOnce(rlForm.form.removeControl);
+		sinon.assert.calledWith(rlForm.form.removeControl, input.name);
+	});
 });

source/components/inputs/input.ts

@@ -1,4 +1,4 @@
-import { Component, AfterViewInit, OnInit, EventEmitter, AnimationEntryMetadata } from '@angular/core';
+import { Component, AfterViewInit, OnInit, EventEmitter, AnimationEntryMetadata, OnDestroy } from '@angular/core';
 import { FormControl } from '@angular/forms';
 
 import { services } from 'typescript-angular-utilities';
@@ -12,7 +12,7 @@ export const baseInputs: string[] = ['name', 'label', 'value', 'disabled','warni
 export const baseOutputs: string[] = ['change', 'valueChange'];
 export const baseAnimations = [slide.animation];
 
-export class InputComponent<T> implements AfterViewInit, OnInit {
+export class InputComponent<T> implements AfterViewInit, OnInit, OnDestroy {
 	name: string;
 	label: string = '';
 	disabled: boolean;
@@ -57,6 +57,12 @@ export class InputComponent<T> implements AfterViewInit, OnInit {
 		});
 	}
 
+	ngOnDestroy() {
+		if (this.rlForm) {
+			this.rlForm.form.removeControl(this.name);
+		}
+	}
+
 	initControl(): void {
 		if (!this.control) {
 			this.control = new FormControl('');