Preserve Autoscroll and Timestamp states

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

arduino-ide-extension/src/browser/monitor/monitor-model.ts

@@ -1,6 +1,13 @@
 import { injectable } from "inversify";
 import { Emitter } from "@theia/core";
 
+export namespace MonitorModel {
+    export interface Data {
+        autoscroll: boolean,
+        timestamp: boolean
+    }
+}
+
 @injectable()
 export class MonitorModel {
 
@@ -28,4 +35,16 @@ export class MonitorModel {
         this._timestamp = !this._timestamp;
         this.onChangeEmitter.fire(undefined);
     }
+
+    restore(model: MonitorModel.Data) {
+        this._autoscroll = model.autoscroll;
+        this._timestamp = model.timestamp;
+    }
+
+    store(): MonitorModel.Data {
+        return {
+            autoscroll: this._autoscroll,
+            timestamp: this._timestamp
+        }
+    }
 }

arduino-ide-extension/src/browser/monitor/monitor-widget.tsx

@@ -1,4 +1,4 @@
-import { ReactWidget, Message, Widget } from "@theia/core/lib/browser";
+import { ReactWidget, Message, Widget, StatefulWidget } from "@theia/core/lib/browser";
 import { postConstruct, injectable, inject } from "inversify";
 import * as React from 'react';
 import Select, { components } from 'react-select';
@@ -107,7 +107,7 @@ export interface SelectOption {
 }
 
 @injectable()
-export class MonitorWidget extends ReactWidget {
+export class MonitorWidget extends ReactWidget implements StatefulWidget {
 
     static readonly ID = 'serial-monitor';
 
@@ -169,6 +169,14 @@ export class MonitorWidget extends ReactWidget {
         this.update();
     }
 
+    storeState(): MonitorModel.Data {
+        return this.model.store();
+    }
+
+    restoreState(oldState: MonitorModel.Data): void {
+        this.model.restore(oldState);
+    }
+
     protected onAfterAttach(msg: Message) {
         super.onAfterAttach(msg);
         this.clear();