Lens restructure (#540)

Signed-off-by: Roman <ixrock@gmail.com>

src/renderer/utils/prevDefault.ts

@@ -0,0 +1,25 @@
+import React from "react";
+
+// Helper for preventing default event action and performing custom callback
+// 1)
+// <form onSubmit={prevDefault(() => console.log('do some action'))}>
+//    <input name="text"/>
+//    <button type="submit">Action</button>
+// </form>
+// 2)
+// <a href="/some-page-url">
+//  <span>Link text</span>
+//  <Icon onClick={prevDefault(() => console.log('stay on the page and open dialog'))}/>
+// </a>
+
+export function prevDefault<E extends React.SyntheticEvent | Event>(callback: (evt: E) => any) {
+  return function (evt: E) {
+    evt.preventDefault();
+    evt.stopPropagation();
+    return callback(evt);
+  }
+}
+
+export function stopPropagation(evt: Event | React.SyntheticEvent) {
+  evt.stopPropagation();
+}