Move app/src (mostly) to flipper-ui-core/src

Summary:
This diff moves all UI code from app/src to app/flipper-ui-core. That is now slightly too much (e.g. node deps are not removed yet), but from here it should be easier to move things out again, as I don't want this diff to be open for too long to avoid too much merge conflicts.

* But at least flipper-ui-core is Electron free :)
* Killed all cross module imports as well, as they where now even more in the way
* Some unit test needed some changes, most not too big (but emotion hashes got renumbered in the snapshots, feel free to ignore that)
* Found some files that were actually meaningless (tsconfig in plugins, WatchTools files, that start generating compile errors, removed those

Follow up work:
* make flipper-ui-core configurable, and wire up flipper-server-core in Electron instead of here
* remove node deps (aigoncharov)
* figure out correct place to load GKs, plugins, make intern requests etc., and move to the correct module
* clean up deps

Reviewed By: aigoncharov

Differential Revision: D32427722

fbshipit-source-id: 14fe92e1ceb15b9dcf7bece367c8ab92df927a70

desktop/flipper-ui-core/src/dispatcher/application.tsx

@@ -0,0 +1,75 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
+
+import {Store} from '../reducers/index';
+import {Logger} from 'flipper-common';
+import {
+  importFileToStore,
+  IMPORT_FLIPPER_TRACE_EVENT,
+} from '../utils/exportData';
+import {tryCatchReportPlatformFailures} from 'flipper-common';
+import {handleDeeplink} from '../deeplink';
+import {Dialog} from 'flipper-plugin';
+import {getRenderHostInstance} from '../RenderHost';
+
+export default (store: Store, logger: Logger) => {
+  const renderHost = getRenderHostInstance();
+
+  const onFocus = () => {
+    setImmediate(() => {
+      store.dispatch({
+        type: 'windowIsFocused',
+        payload: {isFocused: true, time: Date.now()},
+      });
+    });
+  };
+  const onBlur = () => {
+    setImmediate(() => {
+      store.dispatch({
+        type: 'windowIsFocused',
+        payload: {isFocused: false, time: Date.now()},
+      });
+    });
+  };
+  window.addEventListener('focus', onFocus);
+  window.addEventListener('blur', onBlur);
+  window.addEventListener('beforeunload', () => {
+    window.removeEventListener('focus', onFocus);
+    window.removeEventListener('blur', onBlur);
+  });
+
+  // windowIsFocussed is initialized in the store before the app is fully ready.
+  // So wait until everything is up and running and then check and set the isFocussed state.
+  window.addEventListener('flipper-store-ready', () => {
+    const isFocused = renderHost.hasFocus();
+    store.dispatch({
+      type: 'windowIsFocused',
+      payload: {isFocused: isFocused, time: Date.now()},
+    });
+  });
+
+  renderHost.onIpcEvent('flipper-protocol-handler', (query: string) => {
+    handleDeeplink(store, logger, query).catch((e) => {
+      console.warn('Failed to handle deeplink', query, e);
+      Dialog.alert({
+        title: 'Failed to open deeplink',
+        type: 'error',
+        message: `Failed to handle deeplink '${query}': ${
+          e.message ?? e.toString()
+        }`,
+      });
+    });
+  });
+
+  renderHost.onIpcEvent('open-flipper-file', (url: string) => {
+    tryCatchReportPlatformFailures(() => {
+      return importFileToStore(url, store);
+    }, `${IMPORT_FLIPPER_TRACE_EVENT}:Deeplink`);
+  });
+};