Add isSubtype

client/src/OnDeviceComponent.spec.ts

@@ -1786,6 +1786,46 @@ describe('OnDeviceComponent', function () {
 		});
 	});
 
+	describe('isSubtype', function () {
+		it('should return true if self subtype matches by default', async () => {
+			const isSubtype = await odc.isSubtype({
+				keyPath: '#pagesContainerGroup',
+				subtype: 'Group'
+			});
+			expect(isSubtype).to.be.true;
+		});
+
+		it('should return false if self subtype matches and matchOnSelfSubtype=false', async () => {
+			const isSubtype = await odc.isSubtype({
+				keyPath: '#pagesContainerGroup',
+				matchOnSelfSubtype: false,
+				subtype: 'Group'
+			});
+			expect(isSubtype).to.be.false;
+		});
+
+		it('should return false if subtype does not match', async () => {
+			const isSubtype = await odc.isSubtype({
+				keyPath: '#pagesContainerGroup',
+				subtype: 'RowList'
+			});
+			expect(isSubtype).to.be.false;
+		});
+
+		it('should throw an error if node does not exist', async () => {
+			try {
+				await odc.isSubtype({
+					keyPath: '#doesNotExist',
+					subtype: 'Group'
+				});
+			} catch (e) {
+				// failed as expected
+				return;
+			}
+			assert.fail('Should have thrown an exception');
+		});
+	});
+
 	describe('setValue', function () {
 		it('should be able to set a key on global', async () => {
 			await setAndVerifyValue({

client/src/OnDeviceComponent.ts

@@ -605,7 +605,7 @@ export class OnDeviceComponent {
 		return result.json as ODC.ReturnTimeTaken;
 	}
 
-	public async isShowingOnScreen(args: ODC.GetValueArgs, options: ODC.RequestOptions = {}) {
+	public async isShowingOnScreen(args: ODC.IsShowingOnScreenArgs, options: ODC.RequestOptions = {}) {
 		this.conditionallyAddDefaultBase(args);
 		this.conditionallyAddDefaultNodeReferenceKey(args);
 		const result = await this.sendRequest(ODC.RequestType.isShowingOnScreen, args, options);
@@ -614,6 +614,12 @@ export class OnDeviceComponent {
 			isFullyShowing: boolean;
 		};
 	}
+
+	public async isSubtype(args: ODC.IsSubtypeArgs, options: ODC.RequestOptions = {}) {
+		this.conditionallyAddDefaultBase(args);
+		const result = await this.sendRequest(ODC.RequestType.isSubtype, {...args, convertResponseToJsonCompatible: false}, options);
+		return result.json.isSubtype as boolean;
+	}
 	//#endregion
 
 	//#region requests run on task thread

client/src/types/OnDeviceComponent.ts

@@ -24,6 +24,7 @@ export enum RequestType {
 	getVolumeList = 'getVolumeList',
 	hasFocus = 'hasFocus',
 	isInFocusChain = 'isInFocusChain',
+	isSubtype = 'isSubtype',
 	isShowingOnScreen = 'isShowingOnScreen',
 	onFieldChangeOnce = 'onFieldChangeOnce',
 	readFile = 'readFile',
@@ -42,7 +43,7 @@ export enum RequestType {
 	writeRegistry = 'writeRegistry',
 }
 
-export type RequestArgs = CallFuncArgs | CreateChildArgs | GetFocusedNodeArgs | GetValueArgs | GetValuesArgs | HasFocusArgs | IsInFocusChainArgs | OnFieldChangeOnceArgs | SetValueArgs | ReadRegistryArgs | WriteRegistryArgs | DeleteRegistrySectionsArgs | DeleteEntireRegistrySectionsArgs | StoreNodeReferencesArgs | GetNodesInfoArgs | FindNodesAtLocationArgs | CreateDirectoryArgs | DeleteEntireRegistrySectionsArgs | DeleteFileArgs | DeleteNodeReferencesArgs | DisableScreensaverArgs | FocusNodeArgs | GetAllCountArgs | GetDirectoryListingArgs | GetNodesWithPropertiesArgs | GetRootsCountArgs | GetServerHostArgs | GetVolumeListArgs | ReadFileArgs | RenameFileArgs | SetSettingsArgs | StartResponsivenessTestingArgs | StatPathArgs | WriteFileArgs | RemoveNodeArgs |RemoveNodeChildrenArgs | DisableScreensaverArgs;
+export type RequestArgs = CallFuncArgs | CreateChildArgs | GetFocusedNodeArgs | GetValueArgs | GetValuesArgs | HasFocusArgs | IsInFocusChainArgs | OnFieldChangeOnceArgs | SetValueArgs | ReadRegistryArgs | WriteRegistryArgs | DeleteRegistrySectionsArgs | DeleteEntireRegistrySectionsArgs | StoreNodeReferencesArgs | GetNodesInfoArgs | FindNodesAtLocationArgs | CreateDirectoryArgs | DeleteEntireRegistrySectionsArgs | DeleteFileArgs | DeleteNodeReferencesArgs | DisableScreensaverArgs | FocusNodeArgs | GetAllCountArgs | GetDirectoryListingArgs | GetNodesWithPropertiesArgs | GetRootsCountArgs | GetServerHostArgs | GetVolumeListArgs | IsShowingOnScreenArgs | IsSubtypeArgs | ReadFileArgs | RenameFileArgs | SetSettingsArgs | StartResponsivenessTestingArgs | StatPathArgs | WriteFileArgs | RemoveNodeArgs |RemoveNodeChildrenArgs | DisableScreensaverArgs;
 
 export enum BaseType {
 	global = 'global',
@@ -355,6 +356,18 @@ export interface FindNodesAtLocationArgs extends StoreNodeReferencesArgs {
 	includeBoundingRectInfo?: true;
 }
 
+export interface IsShowingOnScreenArgs extends BaseKeyPath {}
+
+export interface IsSubtypeArgs extends BaseKeyPath {
+	/** The subtype we are checking against */
+	subtype: string;
+
+	/** isSubtype does not normally match the current node's subtype which is usually not the desired behavior.
+	 *  Because of this we also will match on the node's own subtype by default.
+	 *  Setting this to false will make it match on only a descendant subtype.  */
+	matchOnSelfSubtype?: boolean;
+}
+
 interface MatchObject extends BaseKeyPath {
 	/** If the match value is passed in then the observer will be fired when the field value equals to the value in match */
 	value: ComparableValueTypes;

device/components/RTA_OnDeviceComponent.brs

@@ -21,6 +21,7 @@ sub init()
 		"hasFocus": processHasFocusRequest
 		"isInFocusChain": processIsInFocusChainRequest
 		"isShowingOnScreen": processIsShowingOnScreenRequest
+		"isSubtype": processIsSubtypeRequest
 		"onFieldChangeOnce": processOnFieldChangeOnceRequest
 		"removeNode": processRemoveNodeRequest
 		"removeNodeChildren": processRemoveNodeChildrenRequest
@@ -577,6 +578,38 @@ function calculateNodeCount(nodes) as Object
 	return result
 end function
 
+function processIsSubtypeRequest(request) as Object
+	args = request.args
+
+	subtype = args.subtype
+	if NOT RTA_isString(subtype) then
+		return RTA_buildErrorResponseObject("Missing valid 'subtype' param")
+	end if
+
+	result = processGetValueRequest(args)
+	if RTA_isErrorObject(result) then
+		return result
+	end if
+
+	if result.found <> true then
+		return RTA_buildErrorResponseObject("No value found at key path '" + RTA_getStringAtKeyPath(args, "keyPath") + "'")
+	end if
+
+	node = result.value
+	if NOT RTA_isNode(node) then
+		return RTA_buildErrorResponseObject("Value at key path '" + RTA_getStringAtKeyPath(args, "keyPath") + "' was not a node")
+	end if
+
+	isSubtype = node.isSubtype(subtype)
+	if NOT isSubtype AND RTA_getBooleanAtKeyPath(args, "matchOnSelfSubtype", true) then
+		isSubtype = (node.subtype() = subtype)
+	end if
+
+	return {
+		"isSubtype": isSubtype
+	}
+end function
+
 function processStoreNodeReferencesRequest(request as Object) as Object
 	args = request.args
 	nodeRefKey = args.nodeRefKey