Feature/extensible azure resource explorer (#3504)

Extensible Azure Resource Explorer

extensions/azurecore/src/azureResource/resourceTreeNode.ts

@@ -0,0 +1,79 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+'use strict';
+
+import { NodeInfo } from 'sqlops';
+import { TreeItem, TreeItemCollapsibleState } from 'vscode';
+import * as nls from 'vscode-nls';
+const localize = nls.loadMessageBundle();
+
+import { TreeNode } from './treeNode';
+import { AzureResourceService } from './resourceService';
+import { IAzureResourceNodeWithProviderId } from './interfaces';
+import { AzureResourceMessageTreeNode } from './messageTreeNode';
+import { AzureResourceErrorMessageUtil } from './utils';
+
+export class AzureResourceResourceTreeNode extends TreeNode {
+	public constructor(
+		public readonly resourceNodeWithProviderId: IAzureResourceNodeWithProviderId,
+		parent: TreeNode
+	) {
+		super();
+
+		this.parent = parent;
+	}
+
+	public async getChildren(): Promise<TreeNode[]> {
+		// It is a leaf node.
+		if (this.resourceNodeWithProviderId.resourceNode.treeItem.collapsibleState === TreeItemCollapsibleState.None) {
+			return <TreeNode[]>[];
+		}
+
+		try {
+			const children = await this._resourceService.getChildren(this.resourceNodeWithProviderId.resourceProviderId, this.resourceNodeWithProviderId.resourceNode);
+
+			if (children.length === 0) {
+				return [AzureResourceMessageTreeNode.create(AzureResourceResourceTreeNode.noResourcesLabel, this)];
+			} else {
+				return children.map((child) => {
+					// To make tree node's id unique, otherwise, treeModel.js would complain 'item already registered'
+					child.resourceNode.treeItem.id = `${this.resourceNodeWithProviderId.resourceNode.treeItem.id}.${child.resourceNode.treeItem.id}`;
+					return new AzureResourceResourceTreeNode(child, this);
+				});
+			}
+		} catch (error) {
+			return [AzureResourceMessageTreeNode.create(AzureResourceErrorMessageUtil.getErrorMessage(error), this)];
+		}
+	}
+
+	public getTreeItem(): TreeItem | Promise<TreeItem> {
+		return this._resourceService.getTreeItem(this.resourceNodeWithProviderId.resourceProviderId, this.resourceNodeWithProviderId.resourceNode);
+	}
+
+	public getNodeInfo(): NodeInfo {
+		const treeItem = this.resourceNodeWithProviderId.resourceNode.treeItem;
+
+		return {
+			label: treeItem.label,
+			isLeaf: treeItem.collapsibleState === TreeItemCollapsibleState.None ? true : false,
+			errorMessage: undefined,
+			metadata: undefined,
+			nodePath: this.generateNodePath(),
+			nodeStatus: undefined,
+			nodeType: treeItem.contextValue,
+			nodeSubType: undefined,
+			iconType: treeItem.contextValue
+		};
+	}
+
+	public get nodePathValue(): string {
+		return this.resourceNodeWithProviderId.resourceNode.treeItem.id;
+	}
+
+	private _resourceService = AzureResourceService.getInstance();
+
+	private static readonly noResourcesLabel = localize('azure.resource.resourceTreeNode.noResourcesLabel', 'No Resources found.');
+}