Added boards toolbar item.

Signed-off-by: jbicker <jan.bicker@typefox.io>

arduino-ide-extension/src/browser/components/boards-toolbar-item.tsx

@@ -0,0 +1,38 @@
+import * as React from 'react';
+import { Board } from '../../common/protocol/boards-service';
+
+export namespace BoardsToolBarItem {
+    export interface Props {
+        readonly onNoBoardsInstalled: () => void;
+        readonly onUnknownBoard: (board: Board) => void;
+    }
+
+    export interface State {
+        showOpenButton: boolean;
+    }
+}
+
+export class BoardsToolBarItem extends React.Component<BoardsToolBarItem.Props, BoardsToolBarItem.State> {
+
+    constructor(props: BoardsToolBarItem.Props) {
+        super(props);
+
+        this.state = {
+            showOpenButton: false
+        }
+    }
+
+    render(): React.ReactNode {
+
+        return <React.Fragment>
+            <div className='arduino-boards-toolbar-item-container' onClick={() => this.setState({ showOpenButton: !this.state.showOpenButton })}>
+                <div className='arduino-boards-toolbar-item'>
+                    <div className='inner-container'>
+                        <div className='label'>Hallo</div>
+                        {this.state.showOpenButton ? <div className='arduino-open-boards-button'> OPEN BOARDS DIALOG </div> : ''}
+                    </div>
+                </div>
+            </div>
+        </React.Fragment>;
+    }
+}