Refactor views to support dynamic updates.

src/card-controller/view/modifiers/remove-context-property.ts

@@ -0,0 +1,17 @@
+import { ViewContext } from 'view';
+import { View } from '../../../view/view';
+import { ViewModifier } from '../types';
+
+export class RemoveContextPropertyViewModifier implements ViewModifier {
+  protected _key: keyof ViewContext;
+  protected _property: PropertyKey;
+
+  constructor(key: keyof ViewContext, property: PropertyKey) {
+    this._key = key;
+    this._property = property;
+  }
+
+  public modify(view: View): void {
+    view.removeContextProperty(this._key, this._property);
+  }
+}