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320 lines (290 loc) · 10.6 KB
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import {NgZone} from 'angular2/src/core/zone/ng_zone';
import {Type, isBlank, isPresent, assertionsEnabled} from 'angular2/src/core/facade/lang';
import {bind, Binding, Injector, OpaqueToken} from 'angular2/src/core/di';
import {APP_COMPONENT_REF_PROMISE, APP_COMPONENT} from './application_tokens';
import {Promise, PromiseWrapper, PromiseCompleter} from 'angular2/src/core/facade/async';
import {ListWrapper} from 'angular2/src/core/facade/collection';
import {Reflector, reflector} from 'angular2/src/core/reflection/reflection';
import {TestabilityRegistry, Testability} from 'angular2/src/core/testability/testability';
import {
ComponentRef,
DynamicComponentLoader
} from 'angular2/src/core/compiler/dynamic_component_loader';
import {
BaseException,
WrappedException,
ExceptionHandler
} from 'angular2/src/core/facade/exceptions';
import {DOM} from 'angular2/src/core/dom/dom_adapter';
import {internalView} from 'angular2/src/core/compiler/view_ref';
import {LifeCycle} from 'angular2/src/core/life_cycle/life_cycle';
import {ProtoViewFactory} from 'angular2/src/core/compiler/proto_view_factory';
import {
Parser,
Lexer,
ChangeDetection,
DynamicChangeDetection,
JitChangeDetection,
PreGeneratedChangeDetection,
IterableDiffers,
defaultIterableDiffers,
KeyValueDiffers,
defaultKeyValueDiffers
} from 'angular2/src/core/change_detection/change_detection';
import {AppViewPool, APP_VIEW_POOL_CAPACITY} from 'angular2/src/core/compiler/view_pool';
import {AppViewManager} from 'angular2/src/core/compiler/view_manager';
import {AppViewManagerUtils} from 'angular2/src/core/compiler/view_manager_utils';
import {AppViewListener} from 'angular2/src/core/compiler/view_listener';
import {Compiler, CompilerCache} from './compiler/compiler';
import {DEFAULT_PIPES} from 'angular2/src/core/pipes';
import {ViewResolver} from './compiler/view_resolver';
import {DirectiveResolver} from './compiler/directive_resolver';
import {PipeResolver} from './compiler/pipe_resolver';
import {StyleUrlResolver} from 'angular2/src/core/render/dom/compiler/style_url_resolver';
import {UrlResolver} from 'angular2/src/core/services/url_resolver';
import {ComponentUrlMapper} from 'angular2/src/core/compiler/component_url_mapper';
/**
* Contains everything that is safe to share between applications.
*/
export function rootBindings(): Array<Type | Binding | any[]> {
return [bind(Reflector).toValue(reflector), TestabilityRegistry];
}
/**
* Construct bindings specific to an individual root component.
*/
function _componentBindings(appComponentType: Type): Array<Type | Binding | any[]> {
return [
bind(APP_COMPONENT)
.toValue(appComponentType),
bind(APP_COMPONENT_REF_PROMISE)
.toFactory(
(dynamicComponentLoader, injector: Injector) => {
// TODO(rado): investigate whether to support bindings on root component.
return dynamicComponentLoader.loadAsRoot(appComponentType, null, injector)
.then((componentRef) => {
if (isPresent(componentRef.location.nativeElement)) {
injector.get(TestabilityRegistry)
.registerApplication(componentRef.location.nativeElement,
injector.get(Testability));
}
return componentRef;
});
},
[DynamicComponentLoader, Injector]),
bind(appComponentType)
.toFactory((p: Promise<any>) => p.then(ref => ref.instance), [APP_COMPONENT_REF_PROMISE]),
];
}
/**
* Construct a default set of bindings which should be included in any Angular
* application, regardless of whether it runs on the UI thread or in a web worker.
*/
export function applicationCommonBindings(): Array<Type | Binding | any[]> {
var bestChangeDetection = new DynamicChangeDetection();
if (PreGeneratedChangeDetection.isSupported()) {
bestChangeDetection = new PreGeneratedChangeDetection();
} else if (JitChangeDetection.isSupported()) {
bestChangeDetection = new JitChangeDetection();
}
return [
ProtoViewFactory,
AppViewPool,
bind(APP_VIEW_POOL_CAPACITY).toValue(10000),
AppViewManager,
AppViewManagerUtils,
AppViewListener,
Compiler,
CompilerCache,
ViewResolver,
DEFAULT_PIPES,
bind(IterableDiffers).toValue(defaultIterableDiffers),
bind(KeyValueDiffers).toValue(defaultKeyValueDiffers),
bind(ChangeDetection).toValue(bestChangeDetection),
DirectiveResolver,
UrlResolver,
StyleUrlResolver,
PipeResolver,
ComponentUrlMapper,
Parser,
Lexer,
DynamicComponentLoader,
bind(LifeCycle).toFactory((exceptionHandler) => new LifeCycle(null, assertionsEnabled()),
[ExceptionHandler]),
];
}
/**
* Create an Angular zone.
*/
export function createNgZone(): NgZone {
return new NgZone({enableLongStackTrace: assertionsEnabled()});
}
var _platform: PlatformRef;
/**
* @private
*/
export function platformCommon(bindings?: Array<Type | Binding | any[]>, initializer?: () => void):
PlatformRef {
if (isPresent(_platform)) {
if (isBlank(bindings)) {
return _platform;
}
throw "platform() can only be called once per page";
}
if (isPresent(initializer)) {
initializer();
}
if (isBlank(bindings)) {
bindings = rootBindings();
}
_platform = new PlatformRef(Injector.resolveAndCreate(bindings), () => { _platform = null; });
return _platform;
}
/**
* Represent the Angular context on a page, and is a true singleton.
*
* The platform {@link Injector} injects dependencies which are also
* truly singletons in the context of a page (such as the browser's
* cookie jar).
*/
export class PlatformRef {
/**
* @private
*/
_applications: ApplicationRef[] = [];
/**
* @private
*/
constructor(private _injector: Injector, private _dispose: () => void) {}
/**
* Get the platform {@link Injector}.
*/
get injector(): Injector { return this._injector; }
/**
* Build a new Angular application with the given bindings. The `ApplicationRef`
* returned can be used to bootstrap one or more root components within the
* application.
*/
application(bindings: Array<Type | Binding | any[]>): ApplicationRef {
var app = this._initApp(createNgZone(), bindings);
return app;
}
/**
* Build a new Angular application from asynchronously provided bindings.
*
* Runs the `AsyncLoader` callback in the application `Zone` and constructs
* a new Application from the bindings provided by the `Promise` it returns.
*/
asyncApplication(bindingFn: (zone: NgZone) =>
Promise<Array<Type | Binding | any[]>>): Promise<ApplicationRef> {
var zone = createNgZone();
var completer = PromiseWrapper.completer();
zone.run(() => {
PromiseWrapper.then(bindingFn(zone), (bindings: Array<Type | Binding | any[]>) => {
completer.resolve(this._initApp(zone, bindings));
});
});
return completer.promise;
}
private _initApp(zone: NgZone, bindings: Array<Type | Binding | any[]>): ApplicationRef {
var injector: Injector;
zone.run(() => {
bindings.push(bind(NgZone).toValue(zone));
bindings.push(bind(ApplicationRef).toValue(this));
var exceptionHandler;
try {
injector = this.injector.resolveAndCreateChild(bindings);
exceptionHandler = injector.get(ExceptionHandler);
zone.overrideOnErrorHandler((e, s) => exceptionHandler.call(e, s));
} catch (e) {
if (isPresent(exceptionHandler)) {
exceptionHandler.call(e, e.stack);
} else {
DOM.logError(e);
}
}
});
var app = new ApplicationRef(this, zone, injector);
this._applications.push(app);
return app;
}
/**
* Destroy the Angular platform and all Angular applications on the page.
*/
dispose(): void {
this._applications.forEach((app) => app.dispose());
this._dispose();
}
/**
* @private
*/
_applicationDisposed(app: ApplicationRef): void { ListWrapper.remove(this._applications, app); }
}
/**
* Represents an Angular application.
*
* Use to retrieve the application {@link Injector} or to bootstrap new
* components at the root of the application. Can also be used to dispose
* of the entire application and all its loaded components.
*/
export class ApplicationRef {
private _bootstrapListeners: Function[] = [];
private _rootComponents: ComponentRef[] = [];
/**
* @private
*/
constructor(private _platform: PlatformRef, private _zone: NgZone, private _injector: Injector) {}
/**
* Register a listener to be called each time a new root component type is bootstrapped.
*/
registerBootstrapListener(listener: (ref: ComponentRef) => void): void {
this._bootstrapListeners.push(listener);
}
/**
* Bootstrap a new component at the root level of the application, optionally with
* component specific bindings.
*/
bootstrap(componentType: Type, bindings?: Array<Type | Binding | any[]>): Promise<ComponentRef> {
var completer = PromiseWrapper.completer();
this._zone.run(() => {
var componentBindings = _componentBindings(componentType);
if (isPresent(bindings)) {
componentBindings.push(bindings);
}
var exceptionHandler = this._injector.get(ExceptionHandler);
try {
var injector: Injector = this._injector.resolveAndCreateChild(componentBindings);
var compRefToken: Promise<ComponentRef> = injector.get(APP_COMPONENT_REF_PROMISE);
var tick = (componentRef) => {
var appChangeDetector = internalView(componentRef.hostView).changeDetector;
var lc = injector.get(LifeCycle);
lc.registerWith(this._zone, appChangeDetector);
lc.tick();
completer.resolve(componentRef);
this._rootComponents.push(componentRef);
this._bootstrapListeners.forEach((listener) => listener(componentRef));
};
var tickResult = PromiseWrapper.then(compRefToken, tick);
PromiseWrapper.then(tickResult, (_) => {});
PromiseWrapper.then(tickResult, null,
(err, stackTrace) => completer.reject(err, stackTrace));
} catch (e) {
exceptionHandler.call(e, e.stack);
completer.reject(e, e.stack);
}
});
return completer.promise;
}
/**
* Retrieve the application {@link Injector}.
*/
get injector(): Injector { return this._injector; }
/**
* Retrieve the application {@link Zone}.
*/
get zone(): NgZone { return this._zone; }
dispose(): void {
// TODO(alxhub): Dispose of the NgZone.
this._rootComponents.forEach((ref) => ref.dispose());
this._platform._applicationDisposed(this);
}
}