Yarn workspaces

Summary:
1) moved "sonar/desktop/src" to "sonar/desktop/app/src", so "app" is now a separate package containing the core Flipper app code
2) Configured yarn workspaces with the root in "sonar/desktop": app, static, pkg, doctor, headless-tests. Plugins are not included for now, I plan to do this later.

Reviewed By: jknoxville

Differential Revision: D20535782

fbshipit-source-id: 600b2301960f37c7d72166e0d04eba462bec9fc1

desktop/app/src/chrome/Sheet.tsx

@@ -0,0 +1,127 @@
+/**
+ * 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 React, {Component} from 'react';
+import {Transition} from 'react-transition-group';
+import {TransitionStatus} from 'react-transition-group/Transition';
+import {setActiveSheet} from '../reducers/application';
+import {connect} from 'react-redux';
+import {styled} from 'flipper';
+import {PLUGIN_SHEET_ELEMENT_ID} from '../ui/components/Sheet';
+import {ACTIVE_SHEET_PLUGIN_SHEET} from '../reducers/application';
+import {State as Store} from '../reducers';
+
+import {ActiveSheet} from '../reducers/application';
+
+const DialogContainer = styled.div<{state: TransitionStatus}>(({state}) => ({
+  transform: `translate(-50%, ${
+    state === 'entering' || state === 'exiting' || state === 'exited'
+      ? 'calc(-100% - 20px)'
+      : '0%'
+  })`,
+  opacity: state === 'exited' ? 0 : 1,
+  transition: '.3s transform',
+  position: 'absolute',
+  left: '50%',
+  top: 38,
+  zIndex: 5,
+  backgroundColor: '#EFEEEF',
+  border: '1px solid #C6C6C6',
+  borderTop: 'none',
+  borderBottomLeftRadius: 2,
+  borderBottomRightRadius: 2,
+  boxShadow: '0 5px 13px rgba(0, 0, 0, 0.2)',
+}));
+
+type OwnProps = {
+  children: (onHide: () => any) => any;
+};
+
+type StateFromProps = {
+  activeSheet: ActiveSheet;
+};
+
+type DispatchFromProps = {
+  onHideSheet: () => void;
+};
+
+type State = {
+  isVisible: boolean;
+};
+
+type Props = OwnProps & StateFromProps & DispatchFromProps;
+class Sheet extends Component<Props, State> {
+  state = {
+    isVisible: Boolean(this.props.activeSheet),
+  };
+
+  static getDerivedStateFromProps(props: Props) {
+    if (!props.activeSheet) {
+      return {
+        isVisible: true,
+      };
+    } else {
+      return null;
+    }
+  }
+
+  componentDidMount() {
+    document.addEventListener('keydown', this.onKeyDown);
+  }
+
+  componentWillUnmount() {
+    document.removeEventListener('keydown', this.onKeyDown);
+  }
+
+  onKeyDown = (e: KeyboardEvent) => {
+    if (e.key === 'Escape') {
+      this.onHide();
+    }
+  };
+
+  onHide = () => {
+    this.setState({isVisible: false});
+  };
+
+  render() {
+    return (
+      <Transition
+        in={Boolean(this.props.activeSheet) && this.state.isVisible}
+        timeout={0}
+        onExited={() => this.props.onHideSheet()}>
+        {state => (
+          <DialogContainer state={state}>
+            <div
+              /* This is the target for React.portal, it should not be
+               * unmounted, therefore it's hidden, when another sheet
+               * is presented. */
+              id={PLUGIN_SHEET_ELEMENT_ID}
+              style={{
+                display:
+                  this.props.activeSheet === ACTIVE_SHEET_PLUGIN_SHEET
+                    ? 'block'
+                    : 'none',
+              }}
+            />
+            {this.props.children(this.onHide)}
+          </DialogContainer>
+        )}
+      </Transition>
+    );
+  }
+}
+
+export default connect<StateFromProps, DispatchFromProps, OwnProps, Store>(
+  ({application: {activeSheet}}) => ({
+    activeSheet,
+  }),
+  {
+    onHideSheet: () => setActiveSheet(null),
+  },
+)(Sheet);