implab/implabjs-djx Commit - r102:c65ea2350b1a

`Subscribable` is made compatible with rxjs, added map, filter and scan...

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r102:c65ea2350b1a v1.3

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r102:c65ea2350b1a

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djx/src/test/ts/declare-tests.ts created 644 +13 0

@@ -0,0 +1,13
	1	import * as t from "tap";
	2	import { Baz } from "./mock/Baz";
	3
	4	t.comment("Declare tests");
	5
	6	const baz = new Baz();
	7
	8	const data: string[] = [];
	9	baz.writeHello(data);
	10	t.pass("Test complete");
	11
	12	// tslint:disable-next-line: no-console
	13	t.comment(data.join("\n"));

djx/src/test/ts/observable-tests.ts created 644 +52 0

@@ -0,0 +1,52
	1	import { observe } from "./observable";
	2	import * as t from "tap";
	3
	4	const subj1 = observe<number>(({ next, complete }) => {
	5	next(1);
	6	complete();
	7	next(2);
	8	});
	9
	10	const consumer1 = {
	11	sum: 0,
	12	next(v: number) {
	13	this.sum += v;
	14	}
	15	}
	16
	17	subj1.subscribe(consumer1);
	18	t.equal(consumer1.sum, 1, "Should get only one value");
	19
	20	subj1.subscribe(consumer1);
	21	t.equal(consumer1.sum, 2, "Should get the value again");
	22
	23	const consumer2 = {
	24	value: 0,
	25	completed: false,
	26	next(v: number) { this.value = v; },
	27	complete() { this.completed = true; }
	28	};
	29
	30	let maps = 0;
	31
	32	subj1
	33	.map(v => {
	34	t.comment("map1: " + v * 2);
	35	maps++;
	36	return v * 2;
	37	})
	38	.map (v => {
	39	t.comment("map2: " + v * 2);
	40	maps++;
	41	return v * 2;
	42	})
	43	.map(v => {
	44	t.comment("map3: " + v * 2);
	45	maps++;
	46	return v * 2
	47	})
	48	.subscribe(consumer2);
	49
	50	t.equal(consumer2.value, 8, "Should map");
	51	t.equal(maps, 3, "The map chain should not be executed after completion");
	52	t.ok(consumer2.completed, "The completion signal should pass through"); No newline at end of file

playground/src/test/ts/index.ts created 644 0 0

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djx/package-lock.json 0 0

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djx/package.json +4 -2

             {
                 "name": "@implab/djx",
                 "version": "0.0.1-dev",
                 "description": "Supports using dojo version 1 with typescript and .tsx files",
                 "keywords": [
                     "dojo",
                     "tsx",
                     "typescript",
                     "widgets"
                 ],
                 "author": "Implab team",
                 "license": "BSD-2-Clause",
                 "repository": "https://code.implab.org/implab/implabjs-djx",
                 "publishConfig": {
                     "access": "public"
                 },
                 "peerDependencies": {
                     "@implab/core-amd": "^1.4.0",
                     "dojo": "^1.10.0"
                 },
                 "devDependencies": {
                     "@implab/core-amd": "^1.4.0",
                     "@types/chai": "4.1.3",
                     "@types/requirejs": "2.1.31",
                     "@types/yaml": "1.2.0",
+                    "@types/tap": "15.0.7",
                     "dojo": "1.16.0",
                     "@implab/dojo-typings": "1.0.0",
                     "eslint": "6.8.0",
                     "requirejs": "2.3.6",
                     "tslint": "^6.1.3",
-                    "typescript": "4.7.4",
+                    "typescript": "4.8.2",
-                    "yaml": "~1.7.2"
+                    "yaml": "~1.7.2",
+                    "tap": "16.3.0"
                 }
             }

djx/src/main/ts/observable.ts +129 -16

@@ -1,34 +1,147
1	import { IDestroyable } from "@implab/core-amd/interfaces";	1	/**
		2	* The interface for the consumer of an observable sequence
		3	*/
		4	export interface Observer<T> {
		5	/**
		6	* Called for the next element in the sequence
		7	*/
		8	next: (value: T) => void;
2		9
3	export interface Sink<T> {	10	/**
4	next: (value: T) => void;	11	* Called once when the error occurs in the sequence.
		12	*/
5	error: (e: unknown) => void;	13	error: (e: unknown) => void;
		14
		15	/**
		16	* Called once at the end of the sequence.
		17	*/
6	complete: () => void;	18	complete: () => void;
7	}	19	}
8		20
9	export type Consumer<T> = Partial<Sink<T>>;	21	/**
		22	* The group of functions to feed an observable. This methods are provided to
		23	* the producer to generate a stream of events.
		24	*/
		25	export type Sink<T> = {
		26	[k in keyof Observer<T>]: (this: void, ...args: Parameters<Observer<T>[k]>) => void;
		27	};
10		28
11	export type Producer<T> = (sink: Sink<T>) => (void \| (() => void));	29	export type Producer<T> = (sink: Sink<T>) => (void \| (() => void));
12		30
13	export interface ~~Observable~~<T> {	31	export interface Unsubscribable {
14	on(consumer: Partial<Sink<T>>): IDestroyable;	32	unsubscribe(): void;
		33	}
		34
		35	export const isUnsubsribable = (v: unknown): v is Unsubscribable =>
		36	v !== null && v !== undefined && typeof (v as Unsubscribable).unsubscribe === "function";
		37
		38	export const isSubsribable = (v: unknown): v is Subscribable<unknown> =>
		39	v !== null && v !== undefined && typeof (v as Subscribable<unknown>).subscribe === "function";
		40
		41	export interface Subscribable<T> {
		42	subscribe(consumer: Partial<Observer<T>>): Unsubscribable;
		43	}
		44
		45	/** The observable source of items. */
		46	export interface Observable<T> extends Subscribable<T> {
		47	/** Transforms elements of the sequence with the specified mapper
		48	*
		49	* @param mapper The mapper used to transform the values
		50	*/
		51	map<T2>(mapper: (value: T) => T2): Observable<T2>;
		52
		53	/** Filters elements of the sequence. The resulting sequence will
		54	* contain only elements which match the specified predicate.
		55	*
		56	* @param predicate The filter predicate.
		57	*/
		58	filter(predicate: (value: T) => boolean): Observable<T>;
		59
		60	/** Applies accumulator to each value in the sequence and
		61	* emits the accumulated value for each source element
		62	*
		63	* @param accumulator
		64	* @param initial
		65	*/
		66	scan<A>(accumulator: (acc: A, value: T) => A, initial: A): Observable<A>;
15	}	67	}
16		68
17	const noop = () => {};	69	const noop = () => { };
18		70
19	const sink = <T>(consumer: ~~Consum~~er<T>) => {	71	const sink = <T>(consumer: Partial<Observer<T>>) => {
20	const { next = ~~noop~~, error = ~~noop~~, complete = ~~noop~~ } = consumer;	72	const { next, error, complete } = consumer;
21	let done = false;
22
23	return {	73	return {
24	next: (value: T) => !done && next(value),	74	next: next ? next.bind(consumer) : noop,
25	error: (e: unknown) => !done && (done = true, error(e)),	75	error: error ? error.bind(consumer) : noop,
26	complete: () => !done && (done = true, complete())	76	complete: complete ? complete.bind(consumer) : noop
		77	}
27	};	78	};
		79
		80	const fuse = <T>({ next, error, complete }: Sink<T>) => {
		81	let done = false;
		82	return {
		83	next: (value: T) => { !done && next(value) },
		84	error: (e: unknown) => { !done && (done = true, error(e)) },
		85	complete: () => { !done && (done = true, complete()) }
		86	}
28	}	87	}
29		88
30	~~export~~ const observe = <T>(producer: Producer<T>) : Observable<T> => ({	89	const _observe = <T>(producer: Producer<T>): Observable<T> => ({
31	on: (consumer: ~~Consum~~er<T>) => ({	90	subscribe: (consumer: Partial<Observer<T>>) => ({
32	~~destroy~~: producer(sink(consumer)) ?? noop	91	unsubscribe: producer(sink(consumer)) ?? noop
		92	}),
		93	map: (mapper) => _observe(({ next, error, complete }) =>
		94	producer({
		95	next: next !== noop ? (v: T) => next(mapper(v)) : noop,
		96	error,
		97	complete
		98	})
		99	),
		100	filter: (predicate) => _observe(({ next, error, complete }) =>
		101	producer({
		102	next: next !== noop ?
		103	(v: T) => predicate(v) ? next(v) : void(0) : noop,
		104	error,
		105	complete
		106	})
		107	),
		108	scan: (accumulator, initial) => _observe(({ next, error, complete }) => {
		109	let _acc = initial;
		110	return producer({
		111	next: next !== noop ?
		112	(v: T) => next(_acc = accumulator(_acc, v)) : noop,
		113	error,
		114	complete
		115	});
33	})	116	})
34	});	117	});
		118
		119	export const observe = <T>(producer: Producer<T>): Observable<T> => ({
		120	subscribe: (consumer: Partial<Observer<T>>) => ({
		121	unsubscribe: producer(fuse(sink(consumer))) ?? noop
		122	}),
		123	map: (mapper) => _observe(({ next, error, complete }) =>
		124	producer(fuse({
		125	next: next !== noop ?
		126	(v: T) => next(mapper(v)) : noop,
		127	error,
		128	complete
		129	}))
		130	),
		131	filter: (predicate) => _observe(({ next, error, complete }) =>
		132	producer(fuse({
		133	next: next !== noop ?
		134	(v: T) => predicate(v) ? next(v) : void (0) : noop,
		135	error,
		136	complete
		137	}))
		138	),
		139	scan: (accumulator, initial?) => observe(({ next, error, complete }) => {
		140	let _acc = initial;
		141	return producer(fuse({
		142	next: next !== noop ? (v: T) => next(_acc = accumulator(_acc, v)) : noop,
		143	error,
		144	complete
		145	}));
		146	})
		147	});

djx/src/main/ts/tsx.ts +70 -10

             import { Constructor } from "@implab/core-amd/interfaces";
             import { HtmlRendition } from "./tsx/HtmlRendition";
             import { WidgetRendition } from "./tsx/WidgetRendition";
-            import { isWidgetConstructor, Rendition } from "./tsx/traits";
+            import { isElementNode, isWidget, isWidgetConstructor, Rendition } from "./tsx/traits";
             import { FunctionRendition } from "./tsx/FunctionRendition";
             import Stateful = require("dojo/Stateful");
             import _WidgetBase = require("dijit/_WidgetBase");
             import { DjxWidgetBase } from "./tsx/DjxWidgetBase";
             import { WatchRendition } from "./tsx/WatchRendition";
-            import { observe } from "./observable";
+            import { Observable, observe, Subscribable } from "./observable";
+            import djAttr = require("dojo/dom-attr");
+            import djClass = require("dojo/dom-class");
             export function createElement<T extends Constructor | string | ((props: any) => Element)>(elementType: T, ...args: any[]): Rendition {
                 if (typeof elementType === "string") {
                     const ctx = new HtmlRendition(elementType);
                     if (args)
                         args.forEach(x => ctx.visitNext(x));
                     return ctx;
                 } else if (isWidgetConstructor(elementType)) {
                     const ctx = new WidgetRendition(elementType);
                     if (args)
                         args.forEach(x => ctx.visitNext(x));
                     return ctx;
                 } else if (typeof elementType === "function") {
                     const ctx = new FunctionRendition(elementType as (props: any) => Element);
                     if (args)
                         args.forEach(x => ctx.visitNext(x));
                     return ctx;
                 } else {
                     throw new Error(`The element type '${elementType}' is unsupported`);
                 }
             }
             export interface EventDetails<T = any> {
                 detail: T;
             }
             export interface EventSelector {
                 selectorTarget: HTMLElement;
                 target: HTMLElement;
             }
             export type DojoMouseEvent<T = any> = MouseEvent & EventSelector & EventDetails<T>;
-            type StatefulProps<T> = T extends Stateful<infer A> ? A : never;
+            type StatefulProps<T> = T extends Stateful<infer A> ? A :
+                T extends _WidgetBase ? T : never;
             /**
              * Observers the property and calls render callback each change.
              *
              * @param target The target object which property will be observed.
              * @param prop The name of the property.
              * @param render The callback which will be called every time the value is changed
              * @returns Rendition which is created instantly
              */
             export function watch<W extends _WidgetBase, K extends keyof W>(
                 target: W,
                 prop: K,
                 render: (model: W[K]) => any
             ): Rendition;
             /**
              * Observers the property and calls render callback each change.
              *
              * @param target The target object which property will be observed.
              * @param prop The name of the property.
              * @param render The callback which will be called every time the value is changed
              * @returns Rendition which is created instantly
              */
             export function watch<T extends Stateful, K extends keyof StatefulProps<T>>(
                 target: T,
                 prop: K,
                 render: (model: StatefulProps<T>[K]) => any
             ): Rendition;
-            export function watch<T extends Stateful, K extends keyof StatefulProps<T> & string>(
+            export function watch<V>(subj: Subscribable<V>, render: (model: V) => unknown): Rendition;
-                target: T,
+            export function watch(
-                prop: K,
+                ...args: [Stateful, string, (model: unknown) => unknown] |
-                render: (model: StatefulProps<T>[K]) => any
+                    [Subscribable<unknown>, (model: unknown) => unknown]
             ) {
+                if (args.length === 3) {
+                    const [target, prop, render] = args;
                     return new WatchRendition(
                         render,
                         observe(({next}) => {
-                        const h = target.watch(
+                            const h = target.watch<any>(
                                 prop,
                                 (_prop, oldValue, newValue) => oldValue !== newValue && next(newValue)
                             );
                             next(target.get(prop));
                             return () => h.remove();
                         })
+                    );
+                } else {
+                    const [subj, render] = args;
+                    return new WatchRendition(render, subj);
+                }
             }
+            export const prop: {
+                <T extends Stateful, K extends string & keyof StatefulProps<T>>(target: T, name: K): Observable<StatefulProps<T>[K]>;
+                <T extends _WidgetBase, K extends keyof T>(target: T, name: K): Observable<T[K]>;
+            } = (target: Stateful, name: string) => {
+                return observe(({next}) => {
+                    const h = target.watch(
+                        name,
+                        (_prop, oldValue, newValue) => oldValue !== newValue && next(newValue)
+                    );
+                    next(target.get(name));
+                    return () => h.remove();
+                })
+            };
+            export const attach = <W extends DjxWidgetBase, K extends keyof W>(target: W, name: K) => (v: W[K]) => target.set(name, v);
+            export const bind = <K extends string, T>(attr: K, subj: Subscribable<T>) => {
+                let h = { unsubscribe() { } };
+                return <E extends (HTMLElement & { [p in K]: T }) | { set(name: K, value: T): void; }>(el: E | undefined) => {
+                    if (el) {
+                        if (isElementNode(el)) {
+                            h = subj.subscribe({
+                                next: value => djAttr.set(el, attr, value)
+                            });
+                        } else {
+                            h = subj.subscribe({
+                                next: value => el.set(attr, value)
+                            });
+                        }
+                    } else {
+                        h.unsubscribe();
+                    }
+                }
+            };
+            export const toggleClass = (className: string, subj: Subscribable<boolean>) => {
+                let h = { unsubscribe() { } };
+                return (elOrWidget: HTMLElement | _WidgetBase | undefined) => {
+                    const el = isWidget(elOrWidget) ? elOrWidget.domNode : elOrWidget;
+                    if (el) {
+                        h = subj.subscribe({
+                            next: v => djClass.toggle(el, className, v)
+                        });
+                    } else {
+                        h.unsubscribe();
+                    }
+                }
+            }
+            export const all = <T, A extends JSX.Ref<T>[]>(...cbs: A): JSX.Ref<T> => (arg: T | undefined) => cbs.forEach(cb => cb(arg));
             /** Decorates the method which will be registered as the handle for the specified event.
              * This decorator can be applied to DjxWidgetBase subclass methods.
              *
              * ```
              *  @on("click")
              *  _onClick(eventObj: MouseEvent) {
              *      // ...
              *  }
              * ```
              */
             export const on = <E extends string>(...eventNames: E[]) =>
                 <K extends string,
                     T extends DjxWidgetBase<any, { [p in E]: EV }>,
                     EV extends Event
                 >(
                     target: T,
                     key: K,
                     _descriptor: TypedPropertyDescriptor<(eventObj: EV) => void> | TypedPropertyDescriptor<() => void>
                 ): any => {
                     const handlers = eventNames.map(eventName => ({ eventName, handlerMethod: key }));
                     target._eventHandlers = target._eventHandlers ? target._eventHandlers.concat(handlers) : handlers;
                 };

djx/src/main/ts/tsx/DjxWidgetBase.ts +16 -2

             import { djbase, djclass } from "../declare";
             import _WidgetBase = require("dijit/_WidgetBase");
             import _AttachMixin = require("dijit/_AttachMixin");
-            import { Rendition, isNode } from "./traits";
+            import { Rendition, isNode, isElementNode } from "./traits";
             import registry = require("dijit/registry");
             import on = require("dojo/on");
+            import { Scope } from "./Scope";
+            import { render } from "./render";
             // type Handle = dojo.Handle;
             export interface EventArgs {
                 bubbles?: boolean;
                 cancelable?: boolean;
                 composed?: boolean;
             }
             export interface DjxWidgetBase<Attrs = {}, Events extends { [name in keyof Events]: Event } = {}> extends
                 _WidgetBase<Events> {
                 /** This property is declared only for type inference to work, it is never assigned
                  * and should not be used.
                  */
                 readonly _eventMap: Events & GlobalEventHandlersEventMap;
                 /** The list of pairs of event and method names. When the widget is created all methods from
                  * this list will be connected to corresponding events.
                  *
                  * This property is maintained in the prototype
                  */
                 _eventHandlers: Array<{
                     eventName: string,
                     handlerMethod: keyof any;
                 }>;
             }
             type _super = {
                 startup(): void;
+                destroy(preserveDom?: boolean): void;
             };
             @djclass
             export abstract class DjxWidgetBase<Attrs = {}, Events = {}> extends djbase<_super, _AttachMixin>(_WidgetBase, _AttachMixin) {
+                private readonly _scope = new Scope();
                 buildRendering() {
-                    this.domNode = this.render().getDomNode();
+                    const node = render(this.render(), this._scope);
+                    if (!isElementNode(node))
+                        throw new Error("The render method must return a single DOM element");
+                    this.domNode = node as HTMLElement;
                     super.buildRendering();
                     // now we should get assigned data-dojo-attach-points
                     // place the contents of the original srcNode to the containerNode
                     const src = this.srcNodeRef;
                     const dest = this.containerNode;
                     // the donNode is constructed now we need to connect event handlers
                     this._connectEventHandlers();
                     if (src && dest) {
                         while (src.firstChild)
                             dest.appendChild(src.firstChild);
                     }
                 }
                 abstract render(): Rendition<HTMLElement>;
                 private _connectEventHandlers() {
                     if (this._eventHandlers)
                         this._eventHandlers.forEach(({ eventName, handlerMethod }) => {
                             const handler = this[handlerMethod as keyof this];
                             if (typeof handler === "function")
                                 on(this.domNode, eventName, handler.bind(this));
                         });
                 }
                 _processTemplateNode<T extends (Element | Node | _WidgetBase)>(
                     baseNode: T,
                     getAttrFunc: (baseNode: T, attr: string) => any,
                     // tslint:disable-next-line: ban-types
                     attachFunc: (node: T, type: string, func?: Function) => dojo.Handle
                 ): boolean {
                     if (isNode(baseNode)) {
                         const w = registry.byNode(baseNode);
                         if (w) {
                             // from dijit/_WidgetsInTemplateMixin
                             this._processTemplateNode(w,
                                 (n, p) => n.get(p as any), // callback to get a property of a widget
                                 (widget, type, callback) => {
                                     if (!callback)
                                         throw new Error("The callback must be specified");
                                     // callback to do data-dojo-attach-event to a widget
                                     if (type in widget) {
                                         // back-compat, remove for 2.0
                                         return widget.connect(widget, type, callback as EventListener);
                                     } else {
                                         // 1.x may never hit this branch, but it's the default for 2.0
                                         return widget.on(type, callback);
                                     }
                                 });
                             // don't process widgets internals
                             return false;
                         }
                     }
                     return super._processTemplateNode(baseNode, getAttrFunc, attachFunc);
                 }
                 /** Starts current widget and all its supporting widgets (placed outside
                  * `containerNode`) and child widgets (placed inside `containerNode`)
                  */
                 startup() {
                     // startup supporting widgets
                     registry.findWidgets(this.domNode, this.containerNode).forEach(w => w.startup());
                     super.startup();
                 }
+                destroy(preserveDom?: boolean) {
+                    this._scope.destroy();
+                    super.destroy(preserveDom);
                 }
+            }

djx/src/main/ts/tsx/HtmlRendition.ts +5 -6

             import djDom = require("dojo/dom-construct");
             import djAttr = require("dojo/dom-attr");
             import { argumentNotEmptyString } from "@implab/core-amd/safe";
             import { RenditionBase } from "./RenditionBase";
             import { placeAt } from "./traits";
-            import { IScope } from "./Scope";
+            import { getItemDom, refHook } from "./render";
-            import { getItemDom, renderHook } from "./render";
             export class HtmlRendition extends RenditionBase<Element> {
                 elementType: string;
                 _element: Element | undefined;
                 constructor(elementType: string) {
                     argumentNotEmptyString(elementType, "elementType");
                     super();
                     this.elementType = elementType;
                 }
-                _addChild(child: unknown, scope: IScope): void {
+                _addChild(child: unknown): void {
                     if (!this._element)
                         throw new Error("The HTML element isn't created");
                     placeAt(getItemDom(child), this._element);
                 }
-                _create({ xmlns, ref, ...attrs }: { xmlns?: string, ref?: JSX.Ref<Element> }, children: unknown[], scope: IScope) {
+                _create({ xmlns, ref, ...attrs }: { xmlns?: string, ref?: JSX.Ref<Element> }, children: unknown[]) {
                     if (xmlns) {
                         this._element = document.createElementNS(xmlns, this.elementType);
                         djAttr.set(this._element, attrs);
                     } else {
                         this._element = djDom.create(this.elementType, attrs);
                     }
-                    children.forEach(v => this._addChild(v, scope));
+                    children.forEach(v => this._addChild(v));
                     const element =  this._element;
                     if (ref)
-                        renderHook(() => ref(element));
+                        refHook(element, ref);
                 }
                 _getDomNode() {
                     if (!this._element)
                         throw new Error("The HTML element isn't created");
                     return this._element;
                 }
             }

djx/src/main/ts/tsx/RenditionBase.ts +11 -14

-            import { isNull, mixin } from "@implab/core-amd/safe";
+            import { isPlainObject, DojoNodePosition, Rendition, isDocumentFragmentNode, placeAt, collectNodes, isMounted, startupWidgets } from "./traits";
-            import { isPlainObject, DojoNodePosition, Rendition, isDocumentFragmentNode, placeAt, collectNodes, autostartWidgets } from "./traits";
-            import { IScope } from "./Scope";
-            import { getScope } from "./render";
             export abstract class RenditionBase<TNode extends Node> implements Rendition<TNode> {
                 private _attrs = {};
                 private _children = new Array();
                 private _created: boolean = false;
                 visitNext(v: any) {
                     if (this._created)
                         throw new Error("The Element is already created");
-                    if (isNull(v) || typeof v === "boolean")
+                    if (v === null || v === undefined || typeof v === "boolean")
                         // skip null, undefined, booleans ( this will work:  {value && <span>{value}</span>} )
                         return;
                     if (isPlainObject(v)) {
-                        mixin(this._attrs, v);
+                        this._attrs = {... this._attrs, ...v};
                     } else if (v instanceof Array) {
                         v.forEach(x => this.visitNext(x));
                     } else {
                         this._children.push(v);
                     }
                 }
-                ensureCreated(scope: IScope) {
+                ensureCreated() {
                     if (!this._created) {
-                        this._create(this._attrs, this._children, scope);
+                        this._create(this._attrs, this._children);
                         this._children = [];
                         this._attrs = {};
                         this._created = true;
                     }
                 }
                 /** Is rendition was instantiated to the DOM node */
                 isCreated() {
                     return this._created;
                 }
                 /** Creates DOM node if not created. No additional actions are taken. */
-                getDomNode(scope?: IScope) {
+                getDomNode() {
-                    this.ensureCreated(scope || getScope());
+                    this.ensureCreated();
                     return this._getDomNode();
                 }
                 /** Creates DOM node if not created, places it to the specified position
                  * and calls startup() method for all widgets contained by this node.
                  *
                  * @param {string | Node} refNode The reference node where the created
                  *   DOM should be placed.
                  * @param {DojoNodePosition} position Optional parameter, specifies the
                  *   position relative to refNode. Default is "last" (i.e. last child).
                  */
                 placeAt(refNode: string | Node, position: DojoNodePosition = "last") {
                     const domNode = this.getDomNode();
-                    const startupPending = isDocumentFragmentNode(domNode) ? collectNodes(domNode.children) : [domNode];
+                    const startupPending = isDocumentFragmentNode(domNode) ? collectNodes(domNode.childNodes) : [domNode];
                     placeAt(domNode, refNode, position);
-                    startupPending.forEach(autostartWidgets);
+                    if (isMounted(startupPending[0]))
+                        startupPending.forEach(n => startupWidgets(n));
                 }
-                protected abstract _create(attrs: object, children: unknown[], scope: IScope): void;
+                protected abstract _create(attrs: object, children: unknown[]): void;
                 protected abstract _getDomNode(): TNode;
             }

djx/src/main/ts/tsx/Scope.ts +5 -2

             import { IDestroyable, IRemovable } from "@implab/core-amd/interfaces";
             import { isDestroyable, isRemovable } from "@implab/core-amd/safe";
+            import { isUnsubsribable, Unsubscribable } from "../observable";
             export interface IScope {
-                own(target: (() => void) | IDestroyable | IRemovable): void;
+                own(target: (() => void) | IDestroyable | IRemovable | Unsubscribable): void;
             }
             export class Scope implements IDestroyable, IScope {
                 private readonly _cleanup: (() => void)[] = [];
                 static readonly dummy: IScope = { own() { } };
-                own(target: (() => void) | IDestroyable | IRemovable) {
+                own(target: (() => void) | IDestroyable | IRemovable | Unsubscribable) {
                     if (target instanceof Function) {
                         this._cleanup.push(target);
                     } else if (isDestroyable(target)) {
                         this._cleanup.push(() => target.destroy());
                     } else if (isRemovable(target)) {
                         this._cleanup.push(() => target.remove());
+                    } else if (isUnsubsribable(target)) {
+                        this._cleanup.push(() => target.unsubscribe());
                     }
                 }
                 clean() {
                     const guard = (cb: () => void) => {
                         try {
                             cb();
                         } catch {
                             // guard
                         }
                     }
                     this._cleanup.forEach(guard);
                     this._cleanup.length = 0;
                 }
                 destroy() {
                     this.clean();
                 }
             }

djx/src/main/ts/tsx/WatchRendition.ts +58 -16

@@ -1,55 +1,97
1	import { id as mid } from "module";	1	import { id as mid } from "module";
2	import { TraceSource } from "@implab/core-amd/log/TraceSource";	2	import { TraceSource } from "@implab/core-amd/log/TraceSource";
3	import { argumentNotNull } from "@implab/core-amd/safe";	3	import { argumentNotNull } from "@implab/core-amd/safe";
4	import { getScope, render } from "./render";	4	import { getScope, render } from "./render";
5	import { RenditionBase } from "./RenditionBase";	5	import { RenditionBase } from "./RenditionBase";
6	import { Scope } from "./Scope";	6	import { Scope } from "./Scope";
7	import { ~~Observ~~able } from "../observable";	7	import { Subscribable } from "../observable";
8	import { destroy } from "./traits";	8	import { Cancellation } from "@implab/core-amd/Cancellation";
		9	import { collectNodes, destroy, isDocumentFragmentNode, isMounted, placeAt, startupWidgets } from "./traits";
9		10
10	const trace = TraceSource.get(mid);	11	const trace = TraceSource.get(mid);
11		12
12	export class WatchRendition<T> extends RenditionBase<Node> {	13	export class WatchRendition<T> extends RenditionBase<Node> {
13	private readonly _component: (arg: T) => unknown;	14	private readonly _component: (arg: T) => unknown;
14		15
15	private _node: Node;	16	private readonly _node: Node;
16		17
17	private readonly _scope = new Scope();	18	private readonly _scope = new Scope();
18		19
19	private readonly _subject: ~~Observ~~able<T>;	20	private readonly _subject: Subscribable<T>;
		21
		22	private _renderJob?: { value: T };
20		23
21	constructor(component: (arg: T) => unknown, subject: Observable<T>) {	24	private _ct = Cancellation.none;
		25
		26	constructor(component: (arg: T) => unknown, subject: Subscribable<T>) {
22	super();	27	super();
23	argumentNotNull(component, "component");	28	argumentNotNull(component, "component");
24		29
25	this._component = component;	30	this._component = component;
26		31
27	this._subject = subject;	32	this._subject = subject;
28		33
29	this._node = document.createComment("~~WatchRendition placeholder~~");	34	this._node = document.createComment("[Watch]");
30	}	35	}
31		36
32	protected _create(~~attrs~~: ~~object~~, ~~children~~: ~~any~~[]) {	37	protected _create() {
33	const scope = getScope();	38	const scope = getScope();
34	scope.own(~~this~~.~~_scope~~);	39	scope.own(() => {
35	scope.own(this._subject.on({ next: this._onValue }));	40	this._scope.destroy();
		41	destroy(this._node);
		42	});
		43	scope.own(this._subject.subscribe({ next: this._onValue }));
		44	this._ct = new Cancellation(cancel => scope.own(cancel));
		45	}
		46
		47	private _onValue = (value: T) => {
		48	if (!this._renderJob) {
		49	// schedule a new job
		50	this._renderJob = { value };
		51	this._render().catch(e => trace.error(e));
		52	} else {
		53	// update existing job
		54	this._renderJob = { value };
		55	}
36	}	56	}
37		57
38	private _onValue = (value: T) =>	58	private async _render() {
39	void this._render(value).catch( e => trace.error(e));	59	// fork
		60	await Promise.resolve();
		61	// don't render destroyed rendition
		62	if (this._ct.isRequested())
		63	return;
		64
		65	// remove all previous content
		66	this._scope.clean();
40		67
41	private async _render(value: T) {	68	// render the new node
42	this._scope.clean();	69	const node = render(
43	const [refNode, ...rest] = await render(this._component(value), this._node, "replace", this._scope);	70	this._renderJob ? this._component(this._renderJob.value) : undefined,
44	this._~~node~~ = ~~refNode~~;	71	this._scope
45	this._scope.own(() => rest.forEach(destroy));	72	);
		73
		74	// get actual content
		75	const pending = isDocumentFragmentNode(node) ?
		76	collectNodes(node.childNodes) :
		77	[node];
		78
		79	placeAt(node, this._node, "after");
		80
		81	if (isMounted(this._node))
		82	pending.forEach(n => startupWidgets(n));
		83
		84	if (pending.length)
		85	this._scope.own(() => pending.forEach(destroy));
		86
		87	this._renderJob = undefined;
46	}	88	}
47		89
48	protected _getDomNode() {	90	protected _getDomNode() {
49	if (!this._node)	91	if (!this._node)
50	throw new Error("The instance of the widget isn't created");	92	throw new Error("The instance of the widget isn't created");
51	return this._node;	93	return this._node;
52	}	94	}
53		95
54		96
55	}	97	}

djx/src/main/ts/tsx/WidgetRendition.ts +10 -14

             import { argumentNotNull } from "@implab/core-amd/safe";
             import { RenditionBase } from "./RenditionBase";
             import { DojoNodePosition, isElementNode, isInPage, isWidget, placeAt } from "./traits";
             import registry = require("dijit/registry");
             import ContentPane = require("dijit/layout/ContentPane");
-            import { IScope } from "./Scope";
+            import { getItemDom, refHook } from "./render";
-            import { getItemDom, getScope, renderHook } from "./render";
             // tslint:disable-next-line: class-name
             export interface _Widget {
                 domNode: Node;
                 containerNode?: Node;
                 placeAt?(refNode: string | Node, position?: DojoNodePosition): void;
                 startup?(): void;
                 addChild?(widget: unknown, index?: number): void;
             }
             export type _WidgetCtor = new (attrs: {}, srcNode?: string | Node) => _Widget;
             export class WidgetRendition extends RenditionBase<Node> {
                 readonly widgetClass: _WidgetCtor;
                 _instance: _Widget | undefined;
                 constructor(widgetClass: _WidgetCtor) {
                     super();
                     argumentNotNull(widgetClass, "widgetClass");
                     this.widgetClass = widgetClass;
                 }
-                _addChild(child: unknown, scope: IScope): void {
+                _addChild(child: unknown): void {
                     const instance = this._getInstance();
                     if (instance.addChild) {
                         if (child instanceof WidgetRendition) {
                             // layout containers add custom logic to addChild methods
-                            instance.addChild(child.getWidgetInstance(scope));
+                            instance.addChild(child.getWidgetInstance());
                         } else if (isWidget(child)) {
                             instance.addChild(child);
                         } else {
                             const childDom = getItemDom(child);
                             const w = isElementNode(childDom) ? registry.byNode(childDom) : undefined;
                             if (w) {
                                 instance.addChild(w);
                             } else {
                                 if (!instance.containerNode)
                                     throw new Error("Failed to add DOM content. The widget doesn't have a containerNode");
                                 // the current widget isn't started, it's children shouldn't start too
                                 placeAt(getItemDom(child), instance.containerNode, "last");
                             }
                         }
                     } else {
                         if (!instance.containerNode)
                             throw new Error("The widget doesn't have neither addChild nor containerNode");
                         // the current widget isn't started, it's children shouldn't start too
                         placeAt(getItemDom(child), instance.containerNode, "last");
                     }
                 }
-                protected _create({ref, ...attrs}: {ref?: JSX.Ref<_Widget>}, children: unknown[], scope: IScope) {
+                protected _create({ref, ...attrs}: {ref?: JSX.Ref<_Widget>}, children: unknown[]) {
                     if (this.widgetClass.prototype instanceof ContentPane) {
                         // a special case for the ContentPane this is for
                         // compatibility with that heavy widget, all
                         // regular containers could be easily manipulated
                         // through `containerNode` property or `addChild` method.
                         // render children to the DocumentFragment
                         const content = document.createDocumentFragment();
                         children.forEach(child => content.appendChild(getItemDom(child)));
                         // set the content property to the parameters of the widget
                         const _attrs = { ...attrs, content };
                         this._instance = new this.widgetClass(_attrs);
                     } else {
                         this._instance = new this.widgetClass(attrs);
-                        children.forEach(x => this._addChild(x, scope));
+                        children.forEach(x => this._addChild(x));
                     }
-                    if (ref) {
+                    if (ref)
-                        const instance = this._instance;
+                        refHook(this._instance, ref);
-                        renderHook(() => ref(instance));
                 }
                 private _getInstance() {
                     if (!this._instance)
                         throw new Error("The instance of the widget isn't created");
                     return this._instance;
                 }
                 protected _getDomNode() {
                     if (!this._instance)
                         throw new Error("The instance of the widget isn't created");
                     return this._instance.domNode;
                 }
                 /** Overrides default placeAt implementation. Calls placeAt of the
                  * widget and then starts it.
                  *
                  * @param refNode A node or id of the node where the widget should be placed.
                  * @param position A position relative to refNode.
                  */
                 placeAt(refNode: string | Node, position?: DojoNodePosition) {
-                    this.ensureCreated(getScope());
+                    this.ensureCreated();
                     const instance = this._getInstance();
                     if (typeof instance.placeAt === "function") {
                         instance.placeAt(refNode, position);
                         // fix the dojo startup behavior when the widget is placed
                         // directly to the document and doesn't have any enclosing widgets
                         const parentWidget = instance.domNode.parentNode ?
                             registry.getEnclosingWidget(instance.domNode.parentNode) : null;
                         if (!parentWidget && isInPage(instance.domNode) && typeof instance.startup === "function")
                             instance.startup();
                     } else {
                         // the widget doesn't have a placeAt method, strange but whatever
                         super.placeAt(refNode, position);
                     }
                 }
-                getWidgetInstance(scope?: IScope) {
+                getWidgetInstance() {
-                    this.ensureCreated(scope || getScope());
+                    this.ensureCreated();
                     return this._getInstance();
                 }
             }

djx/src/main/ts/tsx/render.ts +40 -32

             import { TraceSource } from "@implab/core-amd/log/TraceSource";
             import { isPromise } from "@implab/core-amd/safe";
             import { id as mid } from "module";
-            import { Scope } from "./Scope";
+            import { IScope, Scope } from "./Scope";
-            import { autostartWidgets, collectNodes, DojoNodePosition, isDocumentFragmentNode, isNode, isRendition, isWidget, placeAt } from "./traits";
+            import { isNode, isRendition, isWidget } from "./traits";
             const trace = TraceSource.get(mid);
-            let _scope = Scope.dummy;
+            interface Context {
+                scope: IScope;
-            let renderCount = 0;
+                hooks?: (() => void)[];
+            }
-            const hooks: (() => void)[] = [];
+            let _context: Context = {
+                scope: Scope.dummy
+            }
             const guard = (cb: () => unknown) => {
                 try {
                     const result = cb()
                     if (isPromise(result)) {
                         const warn = (ret: unknown) => trace.error("The callback {0} competed asynchronously. result = {1}", cb, ret);
                         result.then(warn, warn);
                     }
                 } catch (e) {
                     trace.error(e);
                 }
             }
-            /**
+            export const beginRender = (scope: IScope = getScope()) => {
-             * Schedules rendering micro task
+                const prev = _context;
-             * @returns Promise
+                _context = {
-             */
+                    scope,
-            const beginRender = () => {
+                    hooks: []
-                renderCount++;
+                };
-                return Promise.resolve();
+                return endRender(prev);
             }
             /**
              * Completes render operation
              */
-            const endRender = () => {
+            const endRender = (prev: Context) => () => {
-                if (!--renderCount) {
+                const { hooks } = _context;
+                if (hooks)
                     hooks.forEach(guard);
-                    hooks.length = 0;
+                _context = prev;
             }
             export const renderHook = (hook: () => void) => {
-                if (renderCount)
+                const { hooks } = _context;
+                if (hooks)
                     hooks.push(hook);
                 else
                     guard(hook);
             }
+            export const refHook = <T>(value: T, ref: JSX.Ref<T>) => {
+                const { hooks, scope } = _context;
+                if (hooks)
+                    hooks.push(() => ref(value));
+                else
+                    guard(() => ref(value));
+                scope.own(() => ref(undefined));
+            }
             /** Returns the current scope */
-            export const getScope = () => _scope;
+            export const getScope = () => _context.scope;
             /** Schedules the rendition to be rendered to the DOM Node
              * @param rendition The rendition to be rendered
              * @param scope The scope
              */
-            export const render = async (rendition: unknown, refNode: Node, position: DojoNodePosition = "last", scope = Scope.dummy) => {
+            export const render = (rendition: unknown, scope = Scope.dummy) => {
-                await beginRender();
+                const complete = beginRender(scope);
-                const prev = _scope;
-                _scope = scope;
                 try {
-                    const domNode = getItemDom(rendition);
+                    return getItemDom(rendition);
-                    const startupPending = isDocumentFragmentNode(domNode) ? collectNodes(domNode.children) : [domNode];
-                    placeAt(domNode, refNode, position);
-                    startupPending.forEach(autostartWidgets);
-                    return startupPending;
                 } finally {
-                    _scope = prev;
+                    complete();
-                    endRender();
                 }
             }
             /** Renders DOM element for different types of the argument. */
             export const getItemDom = (v: unknown) => {
                 if (typeof v === "string" || typeof v === "number" || v instanceof RegExp || v instanceof Date) {
                     // primitive types converted to the text nodes
                     return document.createTextNode(v.toString());
                 } else if (isNode(v)) {
                     // nodes are kept as is
                     return v;
                 } else if (isRendition(v)) {
                     // renditions are instantiated
                     return v.getDomNode();
                 } else if (isWidget(v)) {
                     // widgets are converted to it's markup
                     return v.domNode;
                 } else if (typeof v === "boolean" || v === null || v === undefined) {
-                    // null | undefined | boolean are removed, converted to comments
+                    // null | undefined | boolean are removed
-                    return document.createComment(`[${typeof v} ${String(v)}]`);
+                    return document.createDocumentFragment();
                 } else if (v instanceof Array) {
                     // arrays will be translated to document fragments
                     const fragment = document.createDocumentFragment();
                     v.map(item => getItemDom(item))
                         .forEach(node => fragment.appendChild(node));
                     return fragment;
                 } else {
                     // bug: explicit error otherwise
                     throw new Error("Invalid parameter: " + v);
                 }
             }

djx/src/main/ts/tsx/traits.ts +10 -10

             import { IDestroyable } from "@implab/core-amd/interfaces";
             import { isDestroyable } from "@implab/core-amd/safe";
             import _WidgetBase = require("dijit/_WidgetBase");
             import registry = require("dijit/registry");
             interface _WidgetBaseConstructor {
                 new <A = {}, E extends { [k in keyof E]: Event } = {}>(params?: Partial<_WidgetBase<E> & A>, srcNodeRef?: dojo.NodeOrString): _WidgetBase<E> & dojo._base.DeclareCreatedObject;
                 prototype: _WidgetBase<any>;
             }
             export type DojoNodePosition = "first" | "after" | "before" | "last" | "replace" | "only" | number;
             export type DojoNodeLocation = [Node, DojoNodePosition];
             export interface Rendition<TNode extends Node = Node> {
                 getDomNode(): TNode;
                 placeAt(refNode: string | Node, position?: DojoNodePosition): void;
             }
             /**
              * @deprecated use Rendition
              */
             export type BuildContext<TNode extends Node = Node> = Rendition<TNode>;
             export interface IRecursivelyDestroyable {
                 destroyRecursive(): void;
             }
             export const isNode = (el: unknown): el is Node => !!(el && (el as Node).nodeName && (el as Node).nodeType);
             export const isElementNode = (el: unknown): el is Element => isNode(el) && el.nodeType === 1;
             export const isTextNode = (el: unknown): el is Text => isNode(el) && el.nodeType === 3;
             export const isProcessingInstructionNode = (el: unknown): el is ProcessingInstruction => isNode(el) && el.nodeType === 7;
             export const isCommentNode = (el: unknown): el is Comment => isNode(el) && el.nodeType === 8;
             export const isDocumentNode = (el: unknown): el is Document => isNode(el) && el.nodeType === 9;
             export const isDocumentTypeNode = (el: unknown): el is DocumentType => isNode(el) && el.nodeType === 10;
             export const isDocumentFragmentNode = (el: any): el is DocumentFragment => isNode(el) && el.nodeType === 11;
             export const isWidget = (v: unknown): v is _WidgetBase => !!(v && "domNode" in (v as _WidgetBase));
             export const isRendition = (v: unknown): v is Rendition => !!(v && typeof (v as Rendition).getDomNode === "function");
             /**
              * @deprecated use isRendition
              */
             export const isBuildContext = isRendition;
             export const isPlainObject = (v: object) => {
                 if (typeof v !== "object")
                     return false;
                 const vp = Object.getPrototypeOf(v);
                 return !vp || vp === Object.prototype;
             }
             export const isWidgetConstructor = (v: unknown): v is _WidgetBaseConstructor =>
                 typeof v === "function" && v.prototype && (
                     "domNode" in v.prototype ||
                     "buildRendering" in v.prototype
                 );
             /** Tests whether the specified node is placed in visible dom.
              *  @param {Node} node The node to test
              */
             export const isInPage = (node: Node) => node === document.body ? false : document.body.contains(node);
             export const isRecursivelyDestroyable = (target: unknown): target is IRecursivelyDestroyable =>
                 !!(target && typeof (target as IRecursivelyDestroyable).destroyRecursive === "function");
             /** Destroys DOM Node with all contained widgets.
              * If the specified node is the root node of a widget, then the
              * widget will be destroyed.
              *
              * @param target DOM Node or widget to destroy
              */
             export const destroy = (target: Node | IDestroyable | IRecursivelyDestroyable) => {
                 if (isRecursivelyDestroyable(target)) {
                     target.destroyRecursive();
                 } else if (isDestroyable(target)) {
                     target.destroy();
                 } else if (isNode(target)) {
                     if (isElementNode(target)) {
                         const w = registry.byNode(target);
                         if (w) {
                             w.destroyRecursive();
+                            return;
                         } else {
                             emptyNode(target);
+                        }
+                    }
                     const parent = target.parentNode;
                     if (parent)
                         parent.removeChild(target);
                 }
             }
             /** Empties a content of the specified node and destroys all contained widgets.
              *
              * @param target DOM node to empty.
              */
             export const emptyNode = (target: Node) => {
                 registry.findWidgets(target).forEach(destroy);
                 for (let c; c = target.lastChild;) { // intentional assignment
                     target.removeChild(c);
                 }
             }
             /** This function starts all widgets inside the DOM node if the target is a node
              * or starts widget itself if the target is the widget. If the specified node
              * associated with the widget that widget will be started.
              *
              * @param target DOM node to find and start widgets or the widget itself.
              */
             export const startupWidgets = (target: Node | _WidgetBase, skipNode?: Node) => {
                 if (isNode(target)) {
                     if (isElementNode(target)) {
                         const w = registry.byNode(target);
                         if (w) {
                             if (w.startup)
                                 w.startup();
                         } else {
                             registry.findWidgets(target, skipNode).forEach(x => x.startup());
                         }
                     }
                 } else {
                     if (target.startup)
                         target.startup();
                 }
             }
             /** Places the specified DOM node at the specified location.
              *
              * @param node The node which should be placed
              * @param refNodeOrId The reference node where the created
              *  DOM should be placed.
              * @param position  Optional parameter, specifies the
              *  position relative to refNode. Default is "last" (i.e. last child).
              */
             export const placeAt = (node: Node, refNodeOrId: string | Node, position: DojoNodePosition = "last") => {
                 const ref = typeof refNodeOrId == "string" ? document.getElementById(refNodeOrId) : refNodeOrId;
                 if (!ref)
                     return;
                 const parent = ref.parentNode;
                 if (typeof position == "number") {
                     if (ref.childNodes.length <= position) {
                         ref.appendChild(node);
                     } else {
                         ref.insertBefore(node, ref.childNodes[position]);
                     }
                 } else {
                     switch (position) {
                         case "before":
                             parent && parent.insertBefore(node, ref);
                             break;
                         case "after":
                             parent && parent.insertBefore(node, ref.nextSibling);
                             break;
                         case "first":
                             ref.insertBefore(node, ref.firstChild);
                             break;
                         case "last":
                             ref.appendChild(node);
                             break;
                         case "only":
                             emptyNode(ref);
                             ref.appendChild(node);
                             break;
                         case "replace":
                             if (parent)
                                 parent.replaceChild(node, ref);
                             destroy(ref);
                             break;
                     }
                 }
             }
             /** Collects nodes from collection to an array.
              *
              * @param collection The collection of nodes.
              * @returns The array of nodes.
              */
-            export const collectNodes = (collection: HTMLCollection) => {
+            export const collectNodes = (collection: NodeListOf<ChildNode>) => {
                 const items = [];
                 for (let i = 0, n = collection.length; i < n; i++) {
                     items.push(collection[i]);
                 }
                 return items;
             };
-            /** Starts widgets if the node contained in the document or in the started widget.
+            export const isMounted = (node: Node) => {
-             * @param node The node to start.
-            */
-            export const autostartWidgets = (node: Node) => {
                 if (node.parentNode) {
                     const parentWidget = registry.getEnclosingWidget(node.parentNode);
                     if (parentWidget && parentWidget._started)
-                        return startupWidgets(node);
+                        return true;
                 }
                 if (isInPage(node))
-                    startupWidgets(node);
+                    return true;
+                return false;
             };

djx/src/main/typings/index.d.ts +1 -1

             /// <reference path="./css-plugin.d.ts"/>
             declare namespace JSX {
-                type Ref<T> = (value: T) => void;
+                type Ref<T> = ((value: T | undefined) => void);
                 interface DjxIntrinsicAttributes<E> {
                     /** alias for className */
                     class: string;
                     /** specifies the name of the property in the widget where the the
                      * reference to the current object will be stored
                      */
                     "data-dojo-attach-point": string;
                     /** specifies handlers map for the events */
                     "data-dojo-attach-event": string;
                     ref: Ref<E>;
                     /** @deprecated */
                     [attr: string]: any;
                 }
                 interface DjxIntrinsicElements {
                 }
                 type RecursivePartial<T> = T extends string | number | boolean | null | undefined | Function ?
                     T :
                     { [k in keyof T]?: RecursivePartial<T[k]> };
                 type MatchingMemberKeys<T, U> = {
                     [K in keyof T]: T[K] extends U ? K : never;
                 }[keyof T];
                 type NotMatchingMemberKeys<T, U> = {
                     [K in keyof T]: T[K] extends U ? never : K;
                 }[keyof T];
                 type ExtractMembers<T, U> = Pick<T, MatchingMemberKeys<T, U>>;
                 type ExcludeMembers<T, U> = Pick<T, NotMatchingMemberKeys<T, U>>;
                 type ElementAttrNames<E> = NotMatchingMemberKeys<E, (...args: any[]) => any>;
                 type ElementAttrType<E, K extends keyof any> = K extends keyof E ? RecursivePartial<E[K]> : string;
                 type ElementAttrNamesBlacklist = "children" | "getRootNode" | keyof EventTarget;
                 /** This type extracts keys of the specified parameter E by the following rule:
                  *  1. skips all ElementAttrNamesBlacklist
                  *  2. skips all methods except with the signature of event handlers
                  */
                 type AssignableElementAttrNames<E> = {
                     [K in keyof E]: K extends ElementAttrNamesBlacklist ? never :
                         ((evt: Event) => any) extends E[K] ? K :
                         E[K] extends ((...args: any[]) => any) ? never :
                         K;
                 }[keyof E];
                 type LaxElement<E extends object> =
                     Pick<E, AssignableElementAttrNames<E>> &
                     DjxIntrinsicAttributes<E>;
                 type LaxIntrinsicElementsMap = {
                     [tag in keyof HTMLElementTagNameMap]: LaxElement<HTMLElementTagNameMap[tag]>
                 } & DjxIntrinsicElements;
                 type IntrinsicElements = {
                     [tag in keyof LaxIntrinsicElementsMap]: RecursivePartial<LaxIntrinsicElementsMap[tag]>;
                 }
                 interface ElementChildrenAttribute {
                     children: {};
                 }
                 interface IntrinsicClassAttributes<T> {
                     ref?: (value: T) => void;
                     children?: unknown;
                 }
             }

djx/src/test/ts/plan.ts +2 -1

@@ -1,1 +1,2
1	import "./~~DeclareT~~ests"; No newline at end of file	1	import "./declare-tests";
		2	import "./observable-tests"; No newline at end of file

playground/build.gradle +3 0

             plugins {
                 id "org.implab.gradle-typescript" version "1.3.4"
                 id "ivy-publish"
             }
             def container = "djx-playground"
             configurations {
                 npmLocal
             }
             dependencies {
                 npmLocal project(":djx")
             }
             def bundleDir = fileTree(layout.buildDirectory.dir("bundle")) {
                 builtBy "bundle"
             }
             typescript {
                 compilerOptions {
                     lib = ["es5", "dom", "scripthost", "es2015.promise", "es2015.symbol", "es2015.iterable"]
                     // listFiles = true
                     strict = true
                     types = ["requirejs", "@implab/dojo-typings", "@implab/djx"]
                     module = "amd"
                     it.target = "es5"
                     experimentalDecorators = true
                     noUnusedLocals = false
                     jsx = "react"
                     jsxFactory = "createElement"
                     moduleResolution = "node"
                     // dojo-typings are sick
                     skipLibCheck = true
                     // traceResolution = true
                     // baseUrl = "./"
                     // paths = [ "*": [ "$projectDir/src/typings/*" ] ]
                     // baseUrl = "$projectDir/src/typings"
                     // typeRoots = ["$projectDir/src/typings"]
                 }
                 tscCmd = "$projectDir/node_modules/.bin/tsc"
                 tsLintCmd = "$projectDir/node_modules/.bin/tslint"
             	esLintCmd = "$projectDir/node_modules/.bin/eslint"
             }
             tasks.matching{ it.name =~ /^configureTs/ }.configureEach {
                 compilerOptions {
                     if (symbols != 'none') {
                         sourceMap = true
                         switch(symbols) {
                             case "local":
                                 sourceRoot = ( isWindows ? "file:///" : "file://" ) + it.rootDir
                             break;
                         }
                     }
                 }
             }
             npmInstall {
                 //npmInstall.dependsOn it
                 dependsOn configurations.npmLocal
                 doFirst {
                     configurations.npmLocal.each { f ->
                         exec {
                             commandLine "npm", "install", f, "--save-dev"
                         }
                     }
                 }
             }
             clean {
                 doFirst {
                     delete "$buildDir/bundle"
                 }
             }
             task processResourcesBundle(type: Copy) {
                 from "src/bundle"
                 into layout.buildDirectory.dir("bundle")
             }
             task copyModules(type: Copy) {
                 dependsOn npmInstall
                 into layout.buildDirectory.dir("bundle/js");
                 def pack = { String jsmod ->
                     into(jsmod) {
                         from npm.module(jsmod)
                     }
                 }
                 pack("@implab/djx")
                 pack("@implab/core-amd")
                 pack("dojo")
                 pack("dijit")
+                into("rxjs") {
+                    from(npm.module("rxjs/dist/bundles"))
+                }
                 from npm.module("requirejs/require.js")
             }
             task copyApp(type: Copy) {
                 dependsOn assemble
                 from typescript.assemblyDir
                 into layout.buildDirectory.dir("bundle/js/app")
             }
             task bundle {
                 dependsOn copyModules, processResourcesBundle, copyApp
             }
             task up(type: Exec) {
                 dependsOn bundle
                 commandLine "podman", "run", "--rm", "-d",
                     "--name", container,
                     "-p", "2078:80",
                     "-v", "$buildDir/bundle:/srv/www/htdocs",
                     "registry.implab.org/implab/apache2:latest"
             }
             task stop(type: Exec) {
                 commandLine "podman", "stop", container
             }

playground/package-lock.json +28 -1

             {
                 "name": "@implab/djx-playground",
                 "lockfileVersion": 2,
                 "requires": true,
                 "packages": {
                     "": {
                         "name": "@implab/djx-playground",
                         "dependencies": {
                             "dijit": "1.17.3",
                             "dojo": "1.17.3",
-                            "requirejs": "2.3.6"
+                            "requirejs": "2.3.6",
+                            "rxjs": "7.5.6"
                         },
                         "devDependencies": {
                             "@implab/core-amd": "1.4.6",
                             "@implab/djx": "file:../djx/build/npm/package",
                             "@implab/dojo-typings": "1.0.2",
                             "@types/requirejs": "2.1.34",
                             "typescript": "4.8.2"
                         }
                     },
                     "../djx/build/npm/package": {
                         "name": "@implab/djx",
                         "dev": true,
                         "license": "BSD-2-Clause",
                         "peerDependencies": {
                             "@implab/core-amd": "^1.4.0",
                             "dojo": "^1.10.0"
                         }
                     },
                     "node_modules/@implab/core-amd": {
                         "version": "1.4.6",
                         "resolved": "https://registry.npmjs.org/@implab/core-amd/-/core-amd-1.4.6.tgz",
                         "integrity": "sha512-I1RwUAxeiodePpiBzveoHaehMSAyk7NFPPPEvDqfphHBC8yXoXWAaUrp7EcOKEzjXAs7lJQVhNpmjCjIqoj6BQ==",
                         "dev": true,
                         "peerDependencies": {
                             "dojo": "^1.10.0"
                         }
                     },
                     "node_modules/@implab/djx": {
                         "resolved": "../djx/build/npm/package",
                         "link": true
                     },
                     "node_modules/@implab/dojo-typings": {
                         "version": "1.0.2",
                         "resolved": "https://registry.npmjs.org/@implab/dojo-typings/-/dojo-typings-1.0.2.tgz",
                         "integrity": "sha512-/lbcMCHdRoHJLKFcT8xdk1KbGazSlb1pGSDJ406io7iMenPm/XbJYcUti+VzXnn71zOJ8aYpGT12T5L0rfOZNA==",
                         "dev": true
                     },
                     "node_modules/@types/requirejs": {
                         "version": "2.1.34",
                         "resolved": "https://registry.npmjs.org/@types/requirejs/-/requirejs-2.1.34.tgz",
                         "integrity": "sha512-iQLGNE1DyIRYih60B47l/hI5X7J0wAnnRBL6Yn85GUYQg8Fm3wl8kvT6NRwncKroUOSx7/lbAagIFNV7y02DiQ==",
                         "dev": true
                     },
                     "node_modules/dijit": {
                         "version": "1.17.3",
                         "resolved": "https://registry.npmjs.org/dijit/-/dijit-1.17.3.tgz",
                         "integrity": "sha512-QS+1bNhPT+BF9E+iomQSi5qI+o3oUNSx1r5TF8WlGH4LybGZP+IIGJBOO5/41YduBPljVXhY7vaPsgrycxC6UQ==",
                         "dependencies": {
                             "dojo": "1.17.3"
                         }
                     },
                     "node_modules/dojo": {
                         "version": "1.17.3",
                         "resolved": "https://registry.npmjs.org/dojo/-/dojo-1.17.3.tgz",
                         "integrity": "sha512-iWDx1oSfCEDnIrs8cMW7Zh9Fbjgxu8iRagFz+Qi2eya3MXIAxFXKhv2A7dpi+bfpMpFozLwcsLV8URLw6BsHsA=="
                     },
                     "node_modules/requirejs": {
                         "version": "2.3.6",
                         "resolved": "https://registry.npmjs.org/requirejs/-/requirejs-2.3.6.tgz",
                         "integrity": "sha512-ipEzlWQe6RK3jkzikgCupiTbTvm4S0/CAU5GlgptkN5SO6F3u0UD0K18wy6ErDqiCyP4J4YYe1HuAShvsxePLg==",
                         "bin": {
                             "r_js": "bin/r.js",
                             "r.js": "bin/r.js"
                         },
                         "engines": {
                             "node": ">=0.4.0"
                         }
                     },
+                    "node_modules/rxjs": {
+                        "version": "7.5.6",
+                        "resolved": "https://registry.npmjs.org/rxjs/-/rxjs-7.5.6.tgz",
+                        "integrity": "sha512-dnyv2/YsXhnm461G+R/Pe5bWP41Nm6LBXEYWI6eiFP4fiwx6WRI/CD0zbdVAudd9xwLEF2IDcKXLHit0FYjUzw==",
+                        "dependencies": {
+                            "tslib": "^2.1.0"
+                        }
+                    },
+                    "node_modules/tslib": {
+                        "version": "2.4.0",
+                        "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.4.0.tgz",
+                        "integrity": "sha512-d6xOpEDfsi2CZVlPQzGeux8XMwLT9hssAsaPYExaQMuYskwb+x1x7J371tWlbBdWHroy99KnVB6qIkUbs5X3UQ=="
+                    },
                     "node_modules/typescript": {
                         "version": "4.8.2",
                         "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.8.2.tgz",
                         "integrity": "sha512-C0I1UsrrDHo2fYI5oaCGbSejwX4ch+9Y5jTQELvovfmFkK3HHSZJB8MSJcWLmCUBzQBchCrZ9rMRV6GuNrvGtw==",
                         "dev": true,
                         "bin": {
                             "tsc": "bin/tsc",
                             "tsserver": "bin/tsserver"
                         },
                         "engines": {
                             "node": ">=4.2.0"
                         }
                     }
                 },
                 "dependencies": {
                     "@implab/core-amd": {
                         "version": "1.4.6",
                         "resolved": "https://registry.npmjs.org/@implab/core-amd/-/core-amd-1.4.6.tgz",
                         "integrity": "sha512-I1RwUAxeiodePpiBzveoHaehMSAyk7NFPPPEvDqfphHBC8yXoXWAaUrp7EcOKEzjXAs7lJQVhNpmjCjIqoj6BQ==",
                         "dev": true,
                         "requires": {}
                     },
                     "@implab/djx": {
                         "version": "file:../djx/build/npm/package",
                         "requires": {}
                     },
                     "@implab/dojo-typings": {
                         "version": "1.0.2",
                         "resolved": "https://registry.npmjs.org/@implab/dojo-typings/-/dojo-typings-1.0.2.tgz",
                         "integrity": "sha512-/lbcMCHdRoHJLKFcT8xdk1KbGazSlb1pGSDJ406io7iMenPm/XbJYcUti+VzXnn71zOJ8aYpGT12T5L0rfOZNA==",
                         "dev": true
                     },
                     "@types/requirejs": {
                         "version": "2.1.34",
                         "resolved": "https://registry.npmjs.org/@types/requirejs/-/requirejs-2.1.34.tgz",
                         "integrity": "sha512-iQLGNE1DyIRYih60B47l/hI5X7J0wAnnRBL6Yn85GUYQg8Fm3wl8kvT6NRwncKroUOSx7/lbAagIFNV7y02DiQ==",
                         "dev": true
                     },
                     "dijit": {
                         "version": "1.17.3",
                         "resolved": "https://registry.npmjs.org/dijit/-/dijit-1.17.3.tgz",
                         "integrity": "sha512-QS+1bNhPT+BF9E+iomQSi5qI+o3oUNSx1r5TF8WlGH4LybGZP+IIGJBOO5/41YduBPljVXhY7vaPsgrycxC6UQ==",
                         "requires": {
                             "dojo": "1.17.3"
                         }
                     },
                     "dojo": {
                         "version": "1.17.3",
                         "resolved": "https://registry.npmjs.org/dojo/-/dojo-1.17.3.tgz",
                         "integrity": "sha512-iWDx1oSfCEDnIrs8cMW7Zh9Fbjgxu8iRagFz+Qi2eya3MXIAxFXKhv2A7dpi+bfpMpFozLwcsLV8URLw6BsHsA=="
                     },
                     "requirejs": {
                         "version": "2.3.6",
                         "resolved": "https://registry.npmjs.org/requirejs/-/requirejs-2.3.6.tgz",
                         "integrity": "sha512-ipEzlWQe6RK3jkzikgCupiTbTvm4S0/CAU5GlgptkN5SO6F3u0UD0K18wy6ErDqiCyP4J4YYe1HuAShvsxePLg=="
                     },
+                    "rxjs": {
+                        "version": "7.5.6",
+                        "resolved": "https://registry.npmjs.org/rxjs/-/rxjs-7.5.6.tgz",
+                        "integrity": "sha512-dnyv2/YsXhnm461G+R/Pe5bWP41Nm6LBXEYWI6eiFP4fiwx6WRI/CD0zbdVAudd9xwLEF2IDcKXLHit0FYjUzw==",
+                        "requires": {
+                            "tslib": "^2.1.0"
+                        }
+                    },
+                    "tslib": {
+                        "version": "2.4.0",
+                        "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.4.0.tgz",
+                        "integrity": "sha512-d6xOpEDfsi2CZVlPQzGeux8XMwLT9hssAsaPYExaQMuYskwb+x1x7J371tWlbBdWHroy99KnVB6qIkUbs5X3UQ=="
+                    },
                     "typescript": {
                         "version": "4.8.2",
                         "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.8.2.tgz",
                         "integrity": "sha512-C0I1UsrrDHo2fYI5oaCGbSejwX4ch+9Y5jTQELvovfmFkK3HHSZJB8MSJcWLmCUBzQBchCrZ9rMRV6GuNrvGtw==",
                         "dev": true
                     }
                 }
             }

playground/package.json +2 -1

             {
                 "name": "@implab/djx-playground",
                 "private": true,
                 "dependencies": {
                     "dijit": "1.17.3",
                     "dojo": "1.17.3",
-                    "requirejs": "2.3.6"
+                    "requirejs": "2.3.6",
+                    "rxjs": "7.5.6"
                 },
                 "devDependencies": {
                     "@implab/core-amd": "1.4.6",
                     "@implab/djx": "file:../djx/build/npm/package",
                     "@implab/dojo-typings": "1.0.2",
                     "@types/requirejs": "2.1.34",
                     "typescript": "4.8.2"
                 }
             }

playground/src/bundle/config.js +6 -1

             requirejs.config({
                 baseUrl: "js",
                 packages: [
                     "app",
                     "@implab/djx",
                     "@implab/core-amd",
                     "dojo",
-                    "dijit"
+                    "dijit",
+                    {
+                        name: "rxjs",
+                        location: "rxjs",
+                        main: "rxjs.umd.min"
+                    }
                 ],
                 deps: ["app"]
             });

playground/src/main/ts/MainWidget.tsx +46 -13

             import { djbase, djclass } from "@implab/djx/declare";
             import { DjxWidgetBase } from "@implab/djx/tsx/DjxWidgetBase";
-            import { createElement, watch } from "@implab/djx/tsx";
+            import { createElement, watch, prop, attach, all, bind, toggleClass } from "@implab/djx/tsx";
             import ProgressBar from "./ProgressBar";
             import Button = require("dijit/form/Button");
+            import { interval } from "rxjs";
-            const ref = <W extends DjxWidgetBase, K extends keyof W>(target: W, name: K) => (v: W[K]) => target.set(name, v);
             @djclass
             export default class MainWidget extends djbase(DjxWidgetBase) {
                 titleNode?: HTMLHeadingElement;
                 progressBar?: ProgressBar;
                 count = 0;
                 showCounter = false;
+                counterNode?: HTMLInputElement;
+                paused = false;
                 render() {
+                    const Counter = ({ children }: { children: unknown[] }) => <span>Counter: {children}</span>;
                     return <div className="tundra">
-                        <h2 ref={ref(this, "titleNode")}>Hi!</h2>
+                        <h2 ref={attach(this, "titleNode")}>Hi!</h2>
-                        <ProgressBar ref={ref(this, "progressBar")} />
+                        <ProgressBar ref={attach(this, "progressBar")} />
-                        {watch(this, "showCounter", flag => flag &&
                         <section style={{ padding: "10px" }}>
-                                <label>
+                            {watch(prop(this, "showCounter"), flag => flag &&
-                                    Counter: {watch(this, "count", v => [<span>{v}</span>, " ", <span>sec</span>])}
-                                </label>
+                                    <Counter><input ref={all(
+                                        bind("value", prop(this, "count")
+                                            .map(x => x*10)
+                                            .map(String)
+                                        ),
+                                        attach(this, "counterNode")
+                                    )} /> <span>ms</span></Counter>,
+                                    " | ",
+                                    <span ref={bind("innerHTML", interval(1000))}></span>,
+                                    " | ",
+                                    <Button
+                                        ref={all(
+                                            bind("label", prop(this, "paused")
+                                                .map(x => x ? "Unpause" : "Pause")
+                                            ),
+                                            toggleClass("paused", prop(this,"paused"))
+                                        )}
+                                        onClick={this._onPauseClick}
+                                    />
+                                ]
+                            )}
                         </section>
-                        )}
                         <Button onClick={this._onToggleCounterClick}>Toggle counter</Button>
                     </div>;
                 }
                 postCreate(): void {
                     super.postCreate();
-                    const inc = () => {
+                    const h = setInterval(
+                        () => {
                             this.set("count", this.count + 1);
-                        this.defer(inc, 1000);
+                        },
+                    );
+                    this.own({
+                        destroy: () => {
+                            clearInterval(h);
+                        }
+                    });
                 }
-                    inc();
+                private _onPauseClick = () => {
+                    this.set("paused", !this.paused);
                 }
                 private _onToggleCounterClick = () => {
                     this.set("showCounter", !this.showCounter);
                 }
             }

djx/src/test/ts/DeclareTests.ts removed 0 -12

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djx/src/test/ts/Tap.ts removed 0 -148

NO CONTENT: file was removed

djx/src/test/ts/TestTraits.ts removed 0 -60

NO CONTENT: file was removed

djx/src/test/ts/TextTapWriter.ts removed 0 -18

NO CONTENT: file was removed

djx/src/test/ts/dummy.ts removed 0 -16

NO CONTENT: file was removed

djx/src/test/ts/i18nTests.ts removed 0 0

NO CONTENT: file was removed

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