Dataexplorer viewlet (#3967)

* added initial data explorer viewlet

* added dataexplorer contribution point

* removed test view

* remove unused imports

* added flag and tests

* CR comments

* added icon for data explorer

src/sql/parts/dataExplorer/common/dataExplorer.contribution.ts

@@ -0,0 +1,74 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import 'vs/css!sql/media/actionBarLabel';
+import { localize } from 'vs/nls';
+import { ViewletRegistry, Extensions as ViewletExtensions, ViewletDescriptor } from 'vs/workbench/browser/viewlet';
+import { Registry } from 'vs/platform/registry/common/platform';
+import { VIEWLET_ID } from 'sql/parts/dataExplorer/common/dataExplorerExtensionPoint';
+import { DataExplorerViewlet, DataExplorerViewletViewsContribution } from 'sql/parts/dataExplorer/viewlet/dataExplorerViewlet';
+import { IWorkbenchActionRegistry, Extensions as ActionExtensions } from 'vs/workbench/common/actions';
+import { IWorkbenchContributionsRegistry, Extensions as WorkbenchExtensions } from 'vs/workbench/common/contributions';
+import { LifecyclePhase } from 'vs/platform/lifecycle/common/lifecycle';
+import { Extensions, IConfigurationRegistry } from 'vs/platform/configuration/common/configurationRegistry';
+import { SyncActionDescriptor } from 'vs/platform/actions/common/actions';
+import { OpenConnectionsViewletAction } from 'sql/parts/objectExplorer/common/registeredServer.contribution';
+import { KeyMod, KeyCode } from 'vs/base/common/keyCodes';
+
+// Data Explorer Viewlet
+const viewletDescriptor = new ViewletDescriptor(
+	DataExplorerViewlet,
+	VIEWLET_ID,
+	localize('workbench.dataExplorer', 'Data Explorer'),
+	'dataExplorer',
+	0
+);
+
+if (process.env.NODE_ENV === 'development') {
+	Registry.as<ViewletRegistry>(ViewletExtensions.Viewlets).registerViewlet(viewletDescriptor);
+	Registry.as<ViewletRegistry>(ViewletExtensions.Viewlets).setDefaultViewletId(VIEWLET_ID);
+	const workbenchRegistry = Registry.as<IWorkbenchContributionsRegistry>(WorkbenchExtensions.Workbench);
+	workbenchRegistry.registerWorkbenchContribution(DataExplorerViewletViewsContribution, LifecyclePhase.Starting);
+	const registry = Registry.as<IWorkbenchActionRegistry>(ActionExtensions.WorkbenchActions);
+	registry.registerWorkbenchAction(
+		new SyncActionDescriptor(
+			OpenConnectionsViewletAction,
+			OpenConnectionsViewletAction.ID,
+			OpenConnectionsViewletAction.LABEL,
+			{ primary: KeyMod.CtrlCmd | KeyCode.Shift | KeyCode.KEY_C }),
+		'View: Show Servers',
+		localize('registeredServers.view', "View")
+	);
+
+	let configurationRegistry = <IConfigurationRegistry>Registry.as(Extensions.Configuration);
+	configurationRegistry.registerConfiguration({
+		'id': 'databaseConnections',
+		'order': 0,
+		'title': localize('databaseConnections', 'Database Connections'),
+		'type': 'object',
+		'properties': {
+			'datasource.connections': {
+				'description': localize('datasource.connections', 'data source connections'),
+				'type': 'array'
+			},
+			'datasource.connectionGroups': {
+				'description': localize('datasource.connectionGroups', 'data source groups'),
+				'type': 'array'
+			}
+		}
+	});
+	configurationRegistry.registerConfiguration({
+		'id': 'startupConfig',
+		'title': localize('startupConfig', 'Startup Configuration'),
+		'type': 'object',
+		'properties': {
+			'startup.alwaysShowServersView': {
+				'type': 'boolean',
+				'description': localize('startup.alwaysShowServersView', 'True for the Servers view to be shown on launch of Azure Data Studio default; false if the last opened view should be shown'),
+				'default': true
+			}
+		}
+	});
+}