Code Layering Accounts (#4882)

* code layering for accounts

* formatting

* formatting

* formatting

src/sql/platform/accounts/common/firewallRuleViewModel.ts

@@ -0,0 +1,66 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import * as azdata from 'azdata';
+
+/**
+ * View model for firewall rule dialog
+ */
+export class FirewallRuleViewModel {
+	public isIPAddressSelected: boolean;
+	public selectedAccount: azdata.Account;
+
+	private _defaultIPAddress: string;
+	private _defaultFromSubnetIPRange: string;
+	private _defaultToSubnetIPRange: string;
+	private _fromSubnetIPRange: string;
+	private _toSubnetIPRange: string;
+
+	constructor() {
+		this.isIPAddressSelected = true;
+	}
+
+	public get defaultIPAddress(): string {
+		return this._defaultIPAddress;
+	}
+
+	public get defaultFromSubnetIPRange(): string {
+		return this._defaultFromSubnetIPRange;
+	}
+
+	public get defaultToSubnetIPRange(): string {
+		return this._defaultToSubnetIPRange;
+	}
+
+	public set fromSubnetIPRange(IPAddress: string) {
+		this._fromSubnetIPRange = IPAddress;
+	}
+
+	public get fromSubnetIPRange(): string {
+		if (this._fromSubnetIPRange) {
+			return this._fromSubnetIPRange;
+		} else {
+			return this._defaultFromSubnetIPRange;
+		}
+	}
+
+	public set toSubnetIPRange(IPAddress: string) {
+		this._toSubnetIPRange = IPAddress;
+	}
+
+	public get toSubnetIPRange(): string {
+		if (this._toSubnetIPRange) {
+			return this._toSubnetIPRange;
+		} else {
+			return this._defaultToSubnetIPRange;
+		}
+	}
+
+	public updateDefaultValues(ipAddress: string): void {
+		this._defaultIPAddress = ipAddress;
+		this._defaultFromSubnetIPRange = ipAddress.replace(/\.[0-9]+$/g, '.0');
+		this._defaultToSubnetIPRange = ipAddress.replace(/\.[0-9]+$/g, '.255');
+	}
+}