Migrate Trigger tab to React (#855)

Co-authored-by: Steve Faulkner <southpolesteve@gmail.com>

src/Explorer/Tabs/TriggerTab.tsx

@@ -0,0 +1,36 @@
+import { TriggerDefinition } from "@azure/cosmos";
+import React from "react";
+import * as ViewModels from "../../Contracts/ViewModels";
+import { SqlTriggerResource } from "../../Utils/arm/generatedClients/cosmos/types";
+import Trigger from "../Tree/Trigger";
+import ScriptTabBase from "./ScriptTabBase";
+import { TriggerTabContent } from "./TriggerTabContent";
+
+export default class TriggerTab extends ScriptTabBase {
+  public onSaveClick: () => void;
+  public onUpdateClick: () => Promise<void>;
+  public collection: ViewModels.Collection;
+  public node: Trigger;
+  public triggerType: ViewModels.Editable<string>;
+  public triggerOperation: ViewModels.Editable<string>;
+  public triggerOptions: ViewModels.ScriptTabOption;
+
+  constructor(options: ViewModels.ScriptTabOption) {
+    super(options);
+    super.onActivate.bind(this);
+    this.triggerOptions = options;
+  }
+
+  addNodeInCollection(createdResource: TriggerDefinition | SqlTriggerResource): void {
+    this.node = this.collection.createTriggerNode(createdResource);
+  }
+
+  public render(): JSX.Element {
+    return (
+      <TriggerTabContent
+        {...this}
+        addNodeInCollection={(createdResource) => this.addNodeInCollection(createdResource)}
+      />
+    );
+  }
+}