Removed GopherJS, basic frontend completed, need backend changes for

torrent storage

torrent-project/node_modules/material-ui/es/utils/keyboardFocus.js

@@ -0,0 +1,51 @@
+//  weak
+
+import keycode from 'keycode';
+import warning from 'warning';
+import contains from 'dom-helpers/query/contains';
+import addEventListener from '../utils/addEventListener';
+
+const internal = {
+  listening: false,
+  focusKeyPressed: false
+};
+
+export function focusKeyPressed(pressed) {
+  if (typeof pressed !== 'undefined') {
+    internal.focusKeyPressed = Boolean(pressed);
+  }
+
+  return internal.focusKeyPressed;
+}
+
+export function detectKeyboardFocus(instance, element, callback, attempt = 1) {
+  warning(instance.keyboardFocusCheckTime, 'Material-UI: missing instance.keyboardFocusCheckTime');
+  warning(instance.keyboardFocusMaxCheckTimes, 'Material-UI: missing instance.keyboardFocusMaxCheckTimes');
+
+  instance.keyboardFocusTimeout = setTimeout(() => {
+    if (focusKeyPressed() && (document.activeElement === element || contains(element, document.activeElement))) {
+      callback();
+    } else if (attempt < instance.keyboardFocusMaxCheckTimes) {
+      detectKeyboardFocus(instance, element, callback, attempt + 1);
+    }
+  }, instance.keyboardFocusCheckTime);
+}
+
+const FOCUS_KEYS = ['tab', 'enter', 'space', 'esc', 'up', 'down', 'left', 'right'];
+
+function isFocusKey(event) {
+  return FOCUS_KEYS.indexOf(keycode(event)) !== -1;
+}
+
+export function listenForFocusKeys() {
+  // It's a singleton, we only need to listen once.
+  // Also, this logic is client side only, we don't need a teardown.
+  if (!internal.listening) {
+    addEventListener(window, 'keyup', event => {
+      if (isFocusKey(event)) {
+        internal.focusKeyPressed = true;
+      }
+    });
+    internal.listening = true;
+  }
+}