protected registerProvider()

in src/main.ts [1224:1293]
62 lines of code
1 McCabe index (conditional complexity)

	protected registerProvider(options: undefined): Disposable {
		const client = this._client;

		let openFileBrowser = (ownerUri: string, expandPath: string, fileFilters: string[], changeFilter: boolean): Thenable<boolean> => {
			let params: types.FileBrowserOpenParams = { ownerUri, expandPath, fileFilters, changeFilter };
			return client.sendRequest(protocol.FileBrowserOpenRequest.type, params).then(
				r => r,
				e => {
					client.logFailedRequest(protocol.FileBrowserOpenRequest.type, e);
					return Promise.resolve(undefined);
				}
			);
		};

		let registerOnFileBrowserOpened = (handler: (response: azdata.FileBrowserOpenedParams) => any): void => {
			client.onNotification(protocol.FileBrowserOpenedNotification.type, handler);
		};

		let expandFolderNode = (ownerUri: string, expandPath: string): Thenable<boolean> => {
			let params: types.FileBrowserExpandParams = { ownerUri, expandPath };
			return client.sendRequest(protocol.FileBrowserExpandRequest.type, params).then(
				r => r,
				e => {
					client.logFailedRequest(protocol.FileBrowserExpandRequest.type, e);
					return Promise.resolve(undefined);
				}
			);
		};

		let registerOnFolderNodeExpanded = (handler: (response: azdata.FileBrowserExpandedParams) => any): void => {
			client.onNotification(protocol.FileBrowserExpandedNotification.type, handler);
		};

		let validateFilePaths = (ownerUri: string, serviceType: string, selectedFiles: string[]): Thenable<boolean> => {
			let params: types.FileBrowserValidateParams = { ownerUri, serviceType, selectedFiles };
			return client.sendRequest(protocol.FileBrowserValidateRequest.type, params).then(
				r => r,
				e => {
					client.logFailedRequest(protocol.FileBrowserValidateRequest.type, e);
					return Promise.resolve(undefined);
				}
			);
		};

		let registerOnFilePathsValidated = (handler: (response: azdata.FileBrowserValidatedParams) => any): void => {
			client.onNotification(protocol.FileBrowserValidatedNotification.type, handler);
		};

		let closeFileBrowser = (ownerUri: string): Thenable<azdata.FileBrowserCloseResponse> => {
			let params: types.FileBrowserCloseParams = { ownerUri };
			return client.sendRequest(protocol.FileBrowserCloseRequest.type, params).then(
				r => r,
				e => {
					client.logFailedRequest(protocol.FileBrowserCloseRequest.type, e);
					return Promise.resolve(undefined);
				}
			);
		};

		return azdata.dataprotocol.registerFileBrowserProvider({
			providerId: client.providerId,
			closeFileBrowser,
			expandFolderNode,
			openFileBrowser,
			registerOnFileBrowserOpened,
			registerOnFilePathsValidated,
			registerOnFolderNodeExpanded,
			validateFilePaths
		});
	}