...
* ...
* ```
*
* Whenever the `someExpression` expression changes, the `properties` declaration instructs
* Angular to update the `Tooltip`'s `text` property.
*
* ### Bindings With Pipes
*
* You can use pipes in bindings, as follows:
*
* ```html
*
* ```
*/
properties: string[];
/**
* Enumerates the set of emitted events.
*
* ## Syntax
*
* ```
* @Component({
* events: ['statusChange']
* })
* class TaskComponent {
* statusChange: EventEmitter;
*
* constructor() {
* this.statusChange = new EventEmitter();
* }
*
* onComplete() {
* this.statusChange.next('completed');
* }
* }
* ```
*
* Use `propertyName: eventName` when the event emitter property name is different from the name
* of the emitted event:
*
* ```
* @Component({
* events: ['status: statusChange']
* })
* class TaskComponent {
* status: EventEmitter;
*
* constructor() {
* this.status = new EventEmitter();
* }
*
* onComplete() {
* this.status.next('completed');
* }
* }
* ```
*/
events: string[];
/**
* Specifiy the events, actions, properties and attributes related to the host element.
*
* ## Events
*
* Specifies which DOM hostListeners a directive listens to via a set of `(event)` to `method`
* key-value pairs:
*
* - `event1`: the DOM event that the directive listens to.
* - `statement`: the statement to execute when the event occurs.
* If the evalutation of the statement returns `false`, then `preventDefault`is applied on the DOM
* event.
*
* To listen to global events, a target must be added to the event name.
* The target can be `window`, `document` or `body`.
*
* When writing a directive event binding, you can also refer to the following local variables:
* - `$event`: Current event object which triggered the event.
* - `$target`: The source of the event. This will be either a DOM element or an Angular
* directive. (will be implemented in later release)
*
* ## Syntax
*
* ```
* @Directive({
* host: {
* '(event1)': 'onMethod1(arguments)',
* '(target:event2)': 'onMethod2(arguments)',
* ...
* }
* }
* ```
*
* ## Basic Event Binding:
*
* Suppose you want to write a directive that reacts to `change` events in the DOM and on
* `resize` events in window.
* You would define the event binding as follows:
*
* ```
* @Directive({
* selector: 'input',
* host: {
* '(change)': 'onChange($event)',
* '(window:resize)': 'onResize($event)'
* }
* })
* class InputDirective {
* onChange(event:Event) {
* // invoked when the input element fires the 'change' event
* }
* onResize(event:Event) {
* // invoked when the window fires the 'resize' event
* }
* }
* ```
*
* ## Properties
*
* Specifies which DOM properties a directives updates.
*
* ## Syntax
*
* ```
* @Directive({
* selector: 'input',
* host: {
* '[prop]': 'expression'
* }
* })
* class InputDirective {
* value:string;
* }
* ```
*
* In this example the prop property of the host element is updated with the expression value
* every time it changes.
*
* ## Attributes
*
* Specifies static attributes that should be propagated to a host element. Attributes specified
* in `hostAttributes` are propagated only if a given attribute is not present on a host element.
*
* ## Syntax
*
* ```
* @Directive({
* selector: '[my-button]',
* host: {
* 'role': 'button'
* }
* })
* class MyButton {
* }
* ```
*
* In this example using `my-button` directive (ex.: `
`) on a host element
* (here: `
` ) will ensure that this element will get the "button" role.
*/
host: StringMap
;
/**
* Specifies which lifecycle should be notified to the directive.
*
* See {@link LifecycleEvent} for details.
*/
lifecycle: LifecycleEvent[];
/**
* If set to false the compiler does not compile the children of this directive.
*/
compileChildren: boolean;
/**
* Defines the set of injectable objects that are visible to a Directive and its light dom
* children.
*
* ## Simple Example
*
* Here is an example of a class that can be injected:
*
* ```
* class Greeter {
* greet(name:string) {
* return 'Hello ' + name + '!';
* }
* }
*
* @Directive({
* selector: 'greet',
* bindings: [
* Greeter
* ]
* })
* class HelloWorld {
* greeter:Greeter;
*
* constructor(greeter:Greeter) {
* this.greeter = greeter;
* }
* }
* ```
*/
bindings: any[];
/**
* Defines the name that can be used in the template to assign this directive to a variable.
*
* ## Simple Example
*
* ```
* @Directive({
* selector: 'child-dir',
* exportAs: 'child'
* })
* class ChildDir {
* }
*
* @Component({
* selector: 'main',
* })
* @View({
* template: `;
pipes: Array;
/**
* Specify how the template and the styles should be encapsulated.
* The default is {@link ViewEncapsulation#Emulated `ViewEncapsulation.Emulated`} if the view
* has styles,
* otherwise {@link ViewEncapsulation#None `ViewEncapsulation.None`}.
*/
encapsulation: ViewEncapsulation;
}
/**
* How the template and styles of a view should be encapsulated.
*/
enum ViewEncapsulation {
/**
* Emulate scoping of styles by preprocessing the style rules
* and adding additional attributes to elements. This is the default.
*/
Emulated,
/**
* Uses the native mechanism of the renderer. For the DOM this means creating a ShadowRoot.
*/
Native,
/**
* Don't scope the template nor the styles.
*/
None
}
/**
* Specifies that a {@link QueryList} should be injected.
*
* See {@link QueryList} for usage and example.
*/
class QueryMetadata extends DependencyMetadata {
descendants: boolean;
isViewQuery: any;
selector: any;
isVarBindingQuery: boolean;
varBindings: string[];
toString(): string;
}
/**
* Specifies that a constant attribute value should be injected.
*
* The directive can inject constant string literals of host element attributes.
*
* ## Example
*
* Suppose we have an `,
pipes?: Array,
renderer?: string,
styles?: string[],
styleUrls?: string[],
}): ViewDecorator;
}
/**
* {@link ComponentAnnotation} factory for creating annotations, decorators or DSL.
*
* ## Example as TypeScript Decorator
*
* ```
* import {Component, View} from "angular2/angular2";
*
* @Component({...})
* @View({...})
* class MyComponent {
* constructor() {
* ...
* }
* }
* ```
*
* ## Example as ES5 DSL
*
* ```
* var MyComponent = ng
* .Component({...})
* .View({...})
* .Class({
* constructor: function() {
* ...
* }
* })
* ```
*
* ## Example as ES5 annotation
*
* ```
* var MyComponent = function() {
* ...
* };
*
* MyComponent.annotations = [
* new ng.Component({...}),
* new ng.View({...})
* ]
* ```
*/
interface ComponentFactory {
new(obj: {
selector?: string,
properties?: string[],
events?: string[],
host?: StringMap,
lifecycle?: LifecycleEvent[],
bindings?: any[],
exportAs?: string,
compileChildren?: boolean,
viewBindings?: any[],
changeDetection?: ChangeDetectionStrategy,
}): ComponentMetadata;
(obj: {
selector?: string,
properties?: string[],
events?: string[],
host?: StringMap,
lifecycle?: LifecycleEvent[],
bindings?: any[],
exportAs?: string,
compileChildren?: boolean,
viewBindings?: any[],
changeDetection?: ChangeDetectionStrategy,
}): ComponentDecorator;
}
/**
* {@link DirectiveMetadata} factory function.
*/
var Directive : DirectiveFactory ;
/**
* Interface for the {@link DirectiveMetadata} decorator function.
*
* See {@link DirectiveFactory}.
*/
interface DirectiveDecorator extends TypeDecorator {
}
/**
* {@link DirectiveMetadata} factory for creating annotations, decorators or DSL.
*
* ## Example as TypeScript Decorator
*
* ```
* import {Directive} from "angular2/angular2";
*
* @Directive({...})
* class MyDirective {
* constructor() {
* ...
* }
* }
* ```
*
* ## Example as ES5 DSL
*
* ```
* var MyDirective = ng
* .Directive({...})
* .Class({
* constructor: function() {
* ...
* }
* })
* ```
*
* ## Example as ES5 annotation
*
* ```
* var MyDirective = function() {
* ...
* };
*
* MyDirective.annotations = [
* new ng.Directive({...})
* ]
* ```
*/
interface DirectiveFactory {
new(obj: {
selector?: string, properties?: string[], events?: string[], host?: StringMap,
lifecycle?: LifecycleEvent[], bindings?: any[], exportAs?: string,
compileChildren?: boolean;
}): DirectiveMetadata;
(obj: {
selector?: string, properties?: string[], events?: string[], host?: StringMap,
lifecycle?: LifecycleEvent[], bindings?: any[], exportAs?: string,
compileChildren?: boolean;
}): DirectiveDecorator;
}
/**
* {@link ViewMetadata} factory function.
*/
var View : ViewFactory ;
/**
* Interface for the {@link ViewMetadata} decorator function.
*
* See {@link ViewFactory}.
*/
interface ViewDecorator extends TypeDecorator {
/**
* Chain {@link ViewMetadata} annotation.
*/
View(obj: {
templateUrl?: string,
template?: string,
directives?: Array,
pipes?: Array,
renderer?: string,
styles?: string[],
styleUrls?: string[],
}): ViewDecorator;
}
/**
* {@link ViewAnnotation} factory for creating annotations, decorators or DSL.
*
* ## Example as TypeScript Decorator
*
* ```
* import {Component, View} from "angular2/angular2";
*
* @Component({...})
* @View({...})
* class MyComponent {
* constructor() {
* ...
* }
* }
* ```
*
* ## Example as ES5 DSL
*
* ```
* var MyComponent = ng
* .Component({...})
* .View({...})
* .Class({
* constructor: function() {
* ...
* }
* })
* ```
*
* ## Example as ES5 annotation
*
* ```
* var MyComponent = function() {
* ...
* };
*
* MyComponent.annotations = [
* new ng.Component({...}),
* new ng.View({...})
* ]
* ```
*/
interface ViewFactory {
new(obj: {
templateUrl?: string,
template?: string,
directives?: Array,
encapsulation?: ViewEncapsulation,
styles?: string[],
styleUrls?: string[],
}): ViewMetadata;
(obj: {
templateUrl?: string,
template?: string,
directives?: Array,
encapsulation?: ViewEncapsulation,
styles?: string[],
styleUrls?: string[],
}): ViewDecorator;
}
/**
* {@link QueryMetadata} factory function.
*/
var Query : QueryFactory ;
/**
* {@link QueryMetadata} factory for creating annotations, decorators or DSL.
*
* ## Example as TypeScript Decorator
*
* ```
* import {Query, QueryList, Component, View} from "angular2/angular2";
*
* @Component({...})
* @View({...})
* class MyComponent {
* constructor(@Query(SomeType) queryList: QueryList) {
* ...
* }
* }
* ```
*
* ## Example as ES5 DSL
*
* ```
* var MyComponent = ng
* .Component({...})
* .View({...})
* .Class({
* constructor: [new ng.Query(SomeType), function(queryList) {
* ...
* }]
* })
* ```
*
* ## Example as ES5 annotation
*
* ```
* var MyComponent = function(queryList) {
* ...
* };
*
* MyComponent.annotations = [
* new ng.Component({...}),
* new ng.View({...})
* ]
* MyComponent.parameters = [
* [new ng.Query(SomeType)]
* ]
* ```
*/
interface QueryFactory {
new(selector: Type | string, {descendants}?: {descendants?: boolean}): QueryMetadata;
(selector: Type | string, {descendants}?: {descendants?: boolean}): ParameterDecorator;
}
/**
* {@link di/ViewQueryMetadata} factory function.
*/
var ViewQuery : QueryFactory ;
/**
* {@link PipeMetadata} factory function.
*/
var Pipe : PipeFactory ;
/**
* {@link PipeMetadata} factory for creating decorators.
*
* ## Example as TypeScript Decorator
*
* ```
* import {Pipe} from "angular2/angular2";
*
* @Pipe({...})
* class MyPipe {
* constructor() {
* ...
* }
*
* transform(v, args) {}
* }
* ```
*/
interface PipeFactory {
new(obj: {
name: string,
}): any;
(obj: {name: string}): any;
}
/**
* Defines lifecycle method
* {@link metadata/LifeCycleEvent#AfterContentInit `LifeCycleEvent.afterContentInit`}
* called when the bindings of all its content children have been checked the first time.
*/
interface AfterContentInit {
afterContentInit(): void;
}
/**
* Defines lifecycle method
* {@link metadata/LifeCycleEvent#AfterContentChecked `LifeCycleEvent.afterContentChecked`}
* called when the bindings of all its content children have been checked.
*/
interface AfterContentChecked {
afterContentChecked(): void;
}
/**
* Defines lifecycle method
* {@link metadata/LifeCycleEvent#AfterViewInit `LifeCycleEvent.afterViewInit`}
* called when the bindings of all its view children have been checked the first time.
*/
interface AfterViewInit {
afterViewInit(): void;
}
/**
* Defines lifecycle method
* {@link metadata/LifeCycleEvent#AfterViewChecked `LifeCycleEvent.afterViewChecked`}
* called when the bindings of all its view children have been checked.
*/
interface AfterViewChecked {
afterViewChecked(): void;
}
/**
* Defines lifecycle method {@link metadata/LifeCycleEvent#OnChanges `LifeCycleEvent.OnChanges`}
* called after all of component's bound properties are updated.
*/
interface OnChanges {
onChanges(changes: StringMap): void;
}
/**
* Defines lifecycle method {@link metadata/LifeCycleEvent#OnDestroy `LifeCycleEvent.OnDestroy`}
* called when a directive is being destroyed.
*/
interface OnDestroy {
onDestroy(): void;
}
/**
* Defines lifecycle method {@link metadata/LifeCycleEvent#OnInit `LifeCycleEvent.OnInit`}
* called when a directive is being checked the first time.
*/
interface OnInit {
onInit(): void;
}
/**
* Defines lifecycle method {@link metadata/LifeCycleEvent#DoCheck `LifeCycleEvent.DoCheck`}
* called when a directive is being checked.
*/
interface DoCheck {
doCheck(): boolean;
}
/**
* Provides a way for expressing ES6 classes with parameter annotations in ES5.
*
* ## Basic Example
*
* ```
* var Greeter = ng.Class({
* constructor: function(name) {
* this.name = name;
* },
*
* greet: function() {
* alert('Hello ' + this.name + '!');
* }
* });
* ```
*
* is equivalent to ES6:
*
* ```
* class Greeter {
* constructor(name) {
* this.name = name;
* }
*
* greet() {
* alert('Hello ' + this.name + '!');
* }
* }
* ```
*
* or equivalent to ES5:
*
* ```
* var Greeter = function (name) {
* this.name = name;
* }
*
* Greeter.prototype.greet = function () {
* alert('Hello ' + this.name + '!');
* }
* ```
*
* ## Example with parameter annotations
*
* ```
* var MyService = neg.Class({
* constructor: [String, [new Query(), QueryList], function(name, queryList) {
* ...
* }];
* });
* ```
*
* is equivalent to ES6:
*
* ```
* class MyService {
* constructor(name: string, @Query() queryList: QueryList) {
* ...
* }
* }
* ```
*
* ## Example with inheritance
*
* ```
* var Shape = ng.Class({
* constructor: (color) {
* this.color = color;
* }
* });
*
* var Square = ng.Class({
* extends: Shape,
* constructor: function(color, size) {
* Shape.call(this, color);
* this.size = size;
* }
* });
* ```
*/
function Class(clsDef: ClassDefinition) : Type ;
/**
* Declares the interface to be used with {@link Class}.
*/
interface ClassDefinition {
/**
* Optional argument for specifying the superclass.
*/
extends?: Type;
/**
* Required constructor function for a class.
*
* The function may be optionally wrapped in an `Array`, in which case additional parameter
* annotations may be specified.
* The number of arguments and the number of parameter annotations must match.
*
* See {@link Class} for example of usage.
*/
constructor: (Function | any[]);
}
/**
* An interface implemented by all Angular type decorators, which allows them to be used as ES7
* decorators as well as
* Angular DSL syntax.
*
* DSL syntax:
*
* ```
* var MyClass = ng
* .Component({...})
* .View({...})
* .Class({...});
* ```
*
* ES7 syntax:
*
* ```
* @ng.Component({...})
* @ng.View({...})
* class MyClass {...}
* ```
*/
interface TypeDecorator {
/**
* Invoke as ES7 decorator.
*/
(type: T): T;
/**
* Storage for the accumulated annotations so far used by the DSL syntax.
*
* Used by {@link Class} to annotate the generated class.
*/
annotations: any[];
/**
* Generate a class from the definition and annotate it with {@link TypeDecorator#annotations}.
*/
Class(obj: ClassDefinition): Type;
}
enum ChangeDetectionStrategy {
/**
* `CheckedOnce` means that after calling detectChanges the mode of the change detector
* will become `Checked`.
*/
CheckOnce,
/**
* `Checked` means that the change detector should be skipped until its mode changes to
* `CheckOnce`.
*/
Checked,
/**
* `CheckAlways` means that after calling detectChanges the mode of the change detector
* will remain `CheckAlways`.
*/
CheckAlways,
/**
* `Detached` means that the change detector sub tree is not a part of the main tree and
* should be skipped.
*/
Detached,
/**
* `OnPush` means that the change detector's mode will be set to `CheckOnce` during hydration.
*/
OnPush,
/**
* `Default` means that the change detector's mode will be set to `CheckAlways` during hydration.
*/
Default,
/**
* This is an experimental feature. Works only in Dart.
*/
OnPushObserve
}
/**
* An error thrown if application changes model breaking the top-down data flow.
*
* Angular expects that the data flows from top (root) component to child (leaf) components.
* This is known as directed acyclic graph. This allows Angular to only execute change detection
* once and prevents loops in change detection data flow.
*
* This exception is only thrown in dev mode.
*/
class ExpressionChangedAfterItHasBeenCheckedException extends BaseException {
}
/**
* Thrown when an expression evaluation raises an exception.
*
* This error wraps the original exception, this is done to attach expression location information.
*/
class ChangeDetectionError extends BaseException {
/**
* Location of the expression.
*/
location: string;
}
interface ChangeDetector {
parent: ChangeDetector;
mode: ChangeDetectionStrategy;
ref: ChangeDetectorRef;
addChild(cd: ChangeDetector): void;
addShadowDomChild(cd: ChangeDetector): void;
removeChild(cd: ChangeDetector): void;
removeShadowDomChild(cd: ChangeDetector): void;
remove(): void;
hydrate(context: any, locals: Locals, directives: any, pipes: any): void;
dehydrate(): void;
markPathToRootAsCheckOnce(): void;
handleEvent(eventName: string, elIndex: number, locals: Locals): void;
detectChanges(): void;
checkNoChanges(): void;
}
class Locals {
parent: Locals;
current: Map;
contains(name: string): boolean;
get(name: string): any;
set(name: string, value: any): void;
clearValues(): void;
}
/**
* Controls change detection.
*
* {@link ChangeDetectorRef} allows requesting checks for detectors that rely on observables. It
* also allows detaching and attaching change detector subtrees.
*/
interface ChangeDetectorRef {
/**
* Request to check all OnPush ancestors.
*/
markForCheck(): void;
/**
* Detaches the change detector from the change detector tree.
*
* The detached change detector will not be checked until it is reattached.
*/
detach(): void;
/**
* Reattach the change detector to the change detector tree.
*
* This also requests a check of this change detector. This reattached change detector will be
* checked during the next change detection run.
*/
reattach(): void;
}
/**
* Indicates that the result of a {@link PipeMetadata} transformation has changed even though the
* reference
* has not changed.
*
* The wrapped value will be unwrapped by change detection, and the unwrapped value will be stored.
*
* Example:
*
* ```
* if (this._latestValue === this._latestReturnedValue) {
* return this._latestReturnedValue;
* } else {
* this._latestReturnedValue = this._latestValue;
* return WrappedValue.wrap(this._latestValue); // this will force update
* }
* ```
*/
class WrappedValue {
static wrap(value: any): WrappedValue;
wrapped: any;
}
/**
* An interface which all pipes must implement.
*
* #Example
*
* ```
* class DoublePipe implements PipeTransform {
* transform(value, args = []) {
* return `${value}${value}`;
* }
* }
* ```
*/
interface PipeTransform {
transform(value: any, args: any[]): any;
}
/**
* An interface that stateful pipes should implement.
*
* #Example
*
* ```
* class StatefulPipe implements PipeTransform, PipeOnDestroy {
* connection;
*
* onDestroy() {
* this.connection.release();
* }
*
* transform(value, args = []) {
* this.connection = createConnection();
* // ...
* return someValue;
* }
* }
* ```
*/
interface PipeOnDestroy {
onDestroy(): void;
}
/**
* A repository of different iterable diffing strategies used by NgFor, NgClass, and others.
*/
class IterableDiffers {
static create(factories: IterableDifferFactory[], parent?: IterableDiffers): IterableDiffers;
/**
* Takes an array of {@link IterableDifferFactory} and returns a binding used to extend the
* inherited {@link IterableDiffers} instance with the provided factories and return a new
* {@link IterableDiffers} instance.
*
* The following example shows how to extend an existing list of factories,
* which will only be applied to the injector for this component and its children.
* This step is all that's required to make a new {@link IterableDiffer} available.
*
* # Example
*
* ```
* @Component({
* viewBindings: [
* IterableDiffers.extend([new ImmutableListDiffer()])
* ]
* })
* ```
*/
static extend(factories: IterableDifferFactory[]): Binding;
factories: IterableDifferFactory[];
find(iterable: Object): IterableDifferFactory;
}
interface IterableDiffer {
diff(object: Object): any;
onDestroy(): void;
}
/**
* Provides a factory for {@link IterableDiffer}.
*/
interface IterableDifferFactory {
supports(objects: Object): boolean;
create(cdRef: ChangeDetectorRef): IterableDiffer;
}
/**
* A repository of different Map diffing strategies used by NgClass, NgStyle, and others.
*/
class KeyValueDiffers {
static create(factories: KeyValueDifferFactory[], parent?: KeyValueDiffers): KeyValueDiffers;
/**
* Takes an array of {@link KeyValueDifferFactory} and returns a binding used to extend the
* inherited {@link KeyValueDiffers} instance with the provided factories and return a new
* {@link KeyValueDiffers} instance.
*
* The following example shows how to extend an existing list of factories,
* which will only be applied to the injector for this component and its children.
* This step is all that's required to make a new {@link KeyValueDiffer} available.
*
* # Example
*
* ```
* @Component({
* viewBindings: [
* KeyValueDiffers.extend([new ImmutableMapDiffer()])
* ]
* })
* ```
*/
static extend(factories: KeyValueDifferFactory[]): Binding;
factories: KeyValueDifferFactory[];
find(kv: Object): KeyValueDifferFactory;
}
interface KeyValueDiffer {
diff(object: Object): void;
onDestroy(): void;
}
/**
* Provides a factory for {@link KeyValueDiffer}.
*/
interface KeyValueDifferFactory {
supports(objects: Object): boolean;
create(cdRef: ChangeDetectorRef): KeyValueDiffer;
}
/**
* An opaque token representing the application root type in the {@link Injector}.
*
* ```
* @Component(...)
* @View(...)
* class MyApp {
* ...
* }
*
* bootstrap(MyApp).then((appRef:ApplicationRef) {
* expect(appRef.injector.get(appComponentTypeToken)).toEqual(MyApp);
* });
*
* ```
*/
const APP_COMPONENT : OpaqueToken ;
/**
* Runtime representation of a type.
*
* In JavaScript a Type is a constructor function.
*/
interface Type extends Function {
new(...args: any[]): any;
}
/**
* Represents a Angular's representation of an Application.
*
* `ApplicationRef` represents a running application instance. Use it to retrieve the host
* component, injector,
* or dispose of an application.
*/
interface ApplicationRef {
/**
* Returns the current {@link ComponentMetadata} type.
*/
hostComponentType: Type;
/**
* Returns the current {@link ComponentMetadata} instance.
*/
hostComponent: any;
/**
* Dispose (un-load) the application.
*/
dispose(): void;
/**
* Returns the root application {@link Injector}.
*/
injector: Injector;
}
/**
* Specifies app root url for the application.
*
* Used by the {@link Compiler} when resolving HTML and CSS template URLs.
*
* This interface can be overridden by the application developer to create custom behavior.
*
* See {@link Compiler}
*/
class AppRootUrl {
/**
* Returns the base URL of the currently running application.
*/
value: any;
}
/**
* Used by the {@link Compiler} when resolving HTML and CSS template URLs.
*
* This interface can be overridden by the application developer to create custom behavior.
*
* See {@link Compiler}
*/
class UrlResolver {
/**
* Resolves the `url` given the `baseUrl`:
* - when the `url` is null, the `baseUrl` is returned,
* - if `url` is relative ('path/to/here', './path/to/here'), the resolved url is a combination of
* `baseUrl` and `url`,
* - if `url` is absolute (it has a scheme: 'http://', 'https://' or start with '/'), the `url` is
* returned as is (ignoring the `baseUrl`)
*
* @param {string} baseUrl
* @param {string} url
* @returns {string} the resolved URL
*/
resolve(baseUrl: string, url: string): string;
}
/**
* Resolve a `Type` from a {@link ComponentMetadata} into a URL.
*
* This interface can be overridden by the application developer to create custom behavior.
*
* See {@link Compiler}
*/
class ComponentUrlMapper {
/**
* Returns the base URL to the component source file.
* The returned URL could be:
* - an absolute URL,
* - a path relative to the application
*/
getUrl(component: Type): string;
}
/**
* Resolve a `Type` for {@link DirectiveMetadata}.
*
* This interface can be overridden by the application developer to create custom behavior.
*
* See {@link Compiler}
*/
class DirectiveResolver {
/**
* Return {@link DirectiveMetadata} for a given `Type`.
*/
resolve(type: Type): DirectiveMetadata;
}
/**
* ## URL Resolution
*
* ```
* var appRootUrl: AppRootUrl = ...;
* var componentUrlMapper: ComponentUrlMapper = ...;
* var urlResolver: UrlResolver = ...;
*
* var componentType: Type = ...;
* var componentAnnotation: ComponentAnnotation = ...;
* var viewAnnotation: ViewAnnotation = ...;
*
* // Resolving a URL
*
* var url = viewAnnotation.templateUrl;
* var componentUrl = componentUrlMapper.getUrl(componentType);
* var componentResolvedUrl = urlResolver.resolve(appRootUrl.value, componentUrl);
* var templateResolvedUrl = urlResolver.resolve(componetResolvedUrl, url);
* ```
*/
interface Compiler {
compileInHost(componentTypeOrBinding: Type | Binding): Promise;
}
/**
* Entry point for creating, moving views in the view hierarchy and destroying views.
* This manager contains all recursion and delegates to helper methods
* in AppViewManagerUtils and the Renderer, so unit tests get simpler.
*/
interface AppViewManager {
/**
* Returns a {@link ViewContainerRef} at the {@link ElementRef} location.
*/
getViewContainer(location: ElementRef): ViewContainerRef;
/**
* Return the first child element of the host element view.
*/
getHostElement(hostViewRef: HostViewRef): ElementRef;
/**
* Returns an ElementRef for the element with the given variable name
* in the current view.
*
* - `hostLocation`: {@link ElementRef} of any element in the View which defines the scope of
* search.
* - `variableName`: Name of the variable to locate.
* - Returns {@link ElementRef} of the found element or null. (Throws if not found.)
*/
getNamedElementInComponentView(hostLocation: ElementRef, variableName: string): ElementRef;
/**
* Returns the component instance for a given element.
*
* The component is the execution context as seen by an expression at that {@link ElementRef}
* location.
*/
getComponent(hostLocation: ElementRef): any;
/**
* Load component view into existing element.
*
* Use this if a host element is already in the DOM and it is necessary to upgrade
* the element into Angular component by attaching a view but reusing the existing element.
*
* - `hostProtoViewRef`: {@link ProtoViewRef} Proto view to use in creating a view for this
* component.
* - `overrideSelector`: (optional) selector to use in locating the existing element to load
* the view into. If not specified use the selector in the component definition of the
* `hostProtoView`.
* - injector: {@link Injector} to use as parent injector for the view.
*
* See {@link AppViewManager#destroyRootHostView}.
*
* ## Example
*
* ```
* @ng.Component({
* selector: 'child-component'
* })
* @ng.View({
* template: 'Child'
* })
* class ChildComponent {
*
* }
*
* @ng.Component({
* selector: 'my-app'
* })
* @ng.View({
* template: `
* Parent (` component would like to get a list its children which are ``
* components as shown in this example:
*
* ```html
*
* ...
* {{o.text}}
*
* ```
*
* In the above example the list of `` elements needs to get a list of `` elements so
* that it could render tabs with the correct titles and in the correct order.
*
* A possible solution would be for a `` to inject `` component and then register itself
* with `` component's on `hydrate` and deregister on `dehydrate` event. While a reasonable
* approach, this would only work partialy since `*ng-for` could rearrange the list of ``
* components which would not be reported to `` component and thus the list of ``
* components would be out of sync with respect to the list of `` elements.
*
* A preferred solution is to inject a `QueryList` which is a live list of directives in the
* component`s light DOM.
*
* ```javascript
* @Component({
* selector: 'tabs'
* })
* @View({
* template: `
*
*
*
* constructor(@Query(Pane) panes:QueryList) {
* this.panes = panes;
* }
* }
*
* @Component({
* selector: 'pane',
* properties: ['title']
* })
* @View(...)
* class Pane {
* title:string;
* }
* ```
*/
class QueryList {
reset(newList: T[]): void;
add(obj: T): void;
fireCallbacks(): void;
onChange(callback: () => void): void;
removeCallback(callback: () => void): void;
toString(): string;
length: number;
first: T;
last: T;
map(fn: (item: T) => U): U[];
}
/**
* Service for dynamically loading a Component into an arbitrary position in the internal Angular
* application tree.
*/
class DynamicComponentLoader {
/**
* Loads a root component that is placed at the first element that matches the component's
* selector.
*
* - `typeOrBinding` `Type` \ {@link Binding} - representing the component to load.
* - `overrideSelector` (optional) selector to load the component at (or use
* `@Component.selector`) The selector can be anywhere (i.e. outside the current component.)
* - `injector` {@link Injector} - optional injector to use for the component.
*
* The loaded component receives injection normally as a hosted view.
*
*
* ## Example
*
* ```
* @ng.Component({
* selector: 'child-component'
* })
* @ng.View({
* template: 'Child'
* })
* class ChildComponent {
* }
*
*
*
* @ng.Component({
* selector: 'my-app'
* })
* @ng.View({
* template: `
* Parent (
* Parent (
*
* Child
*
* )
*
* ```
*/
loadAsRoot(typeOrBinding: Type | Binding, overrideSelector: string, injector: Injector): Promise;
/**
* Loads a component into the component view of the provided ElementRef next to the element
* with the given name.
*
* The loaded component receives injection normally as a hosted view.
*
* ## Example
*
* ```
* @ng.Component({
* selector: 'child-component'
* })
* @ng.View({
* template: 'Child'
* })
* class ChildComponent {
* }
*
*
* @ng.Component({
* selector: 'my-app'
* })
* @ng.View({
* template: `
* Parent (
)
* `
* })
* class MyApp {
* constructor(dynamicComponentLoader: ng.DynamicComponentLoader, elementRef: ng.ElementRef) {
* dynamicComponentLoader.loadIntoLocation(ChildComponent, elementRef, 'child');
* }
* }
*
* ng.bootstrap(MyApp);
* ```
*
* Resulting DOM:
*
* ```
*
* Parent (
*
* Child
* )
*
* ```
*/
loadIntoLocation(typeOrBinding: Type | Binding, hostLocation: ElementRef, anchorName: string, bindings?: ResolvedBinding[]): Promise;
/**
* Loads a component next to the provided ElementRef.
*
* The loaded component receives injection normally as a hosted view.
*
*
* ## Example
*
* ```
* @ng.Component({
* selector: 'child-component'
* })
* @ng.View({
* template: 'Child'
* })
* class ChildComponent {
* }
*
*
* @ng.Component({
* selector: 'my-app'
* })
* @ng.View({
* template: `Parent`
* })
* class MyApp {
* constructor(dynamicComponentLoader: ng.DynamicComponentLoader, elementRef: ng.ElementRef) {
* dynamicComponentLoader.loadIntoLocation(ChildComponent, elementRef, 'child');
* }
* }
*
* ng.bootstrap(MyApp);
* ```
*
* Resulting DOM:
*
* ```
* Parent
* Child
* ```
*/
loadNextToLocation(typeOrBinding: Type | Binding, location: ElementRef, bindings?: ResolvedBinding[]): Promise;
}
/**
* Provides access to explicitly trigger change detection in an application.
*
* By default, `Zone` triggers change detection in Angular on each virtual machine (VM) turn. When
* testing, or in some
* limited application use cases, a developer can also trigger change detection with the
* `lifecycle.tick()` method.
*
* Each Angular application has a single `LifeCycle` instance.
*
* # Example
*
* This is a contrived example, since the bootstrap automatically runs inside of the `Zone`, which
* invokes
* `lifecycle.tick()` on your behalf.
*
* ```javascript
* bootstrap(MyApp).then((ref:ComponentRef) => {
* var lifeCycle = ref.injector.get(LifeCycle);
* var myApp = ref.instance;
*
* ref.doSomething();
* lifecycle.tick();
* });
* ```
*/
class LifeCycle {
/**
* @private
*/
registerWith(zone: NgZone, changeDetector?: ChangeDetector): void;
/**
* Invoke this method to explicitly process change detection and its side-effects.
*
* In development mode, `tick()` also performs a second change detection cycle to ensure that no
* further
* changes are detected. If additional changes are picked up during this second cycle, bindings
* in
* the app have
* side-effects that cannot be resolved in a single change detection pass. In this case, Angular
* throws an error,
* since an Angular application can only have one change detection pass during which all change
* detection must
* complete.
*/
tick(): void;
}
/**
* Reference to the element.
*
* Represents an opaque reference to the underlying element. The element is a DOM ELement in
* a Browser, but may represent other types on other rendering platforms. In the browser the
* `ElementRef` can be sent to the web-worker. Web Workers can not have references to the
* DOM Elements.
*/
class ElementRef implements RenderElementRef {
/**
* Reference to the {@link ViewRef} where the `ElementRef` is inside of.
*/
parentView: ViewRef;
/**
* Index of the element inside the {@link ViewRef}.
*
* This is used internally by the Angular framework to locate elements.
*/
boundElementIndex: number;
/**
* Index of the element inside the `RenderViewRef`.
*
* This is used internally by the Angular framework to locate elements.
*/
renderBoundElementIndex: number;
renderView: RenderViewRef;
/**
* Returns the native Element implementation.
*
* In the browser this represents the DOM Element.
*
* The `nativeElement` can be used as an escape hatch when direct DOM manipulation is needed. Use
* this with caution, as it creates tight coupling between your application and the Browser, which
* will not work in WebWorkers.
*
* NOTE: This method will return null in the webworker scenario!
*/
nativeElement: any;
}
/**
* Reference to a template within a component.
*
* Represents an opaque reference to the underlying template that can
* be instantiated using the {@link ViewContainerRef}.
*/
class TemplateRef {
/**
* The location of the template
*/
elementRef: ElementRef;
protoViewRef: ProtoViewRef;
/**
* Whether this template has a local variable with the given name
*/
hasLocal(name: string): boolean;
}
/**
* A reference to an Angular View.
*
* A View is a fundamental building block of Application UI. A View is the smallest set of
* elements which are created and destroyed together. A View can change properties on the elements
* within the view, but it can not change the structure of those elements.
*
* To change structure of the elements, the Views can contain zero or more {@link ViewContainerRef}s
* which allow the views to be nested.
*
* ## Example
*
* Given this template
*
* ```
* Count: {{items.length}}
*
* ```
*
* The above example we have two {@link ProtoViewRef}s:
*
* Outter {@link ProtoViewRef}:
* ```
* Count: {{items.length}}
*
* ```
*
* Inner {@link ProtoViewRef}:
* ```
* {{item}}
* ```
*
* Notice that the original template is broken down into two separate {@link ProtoViewRef}s.
*
* The outter/inner {@link ProtoViewRef}s are then assembled into views like so:
*
* ```
*
* Count: 2
*
*
* ```
*/
interface ViewRef extends HostViewRef {
/**
* Return `RenderViewRef`
*/
render: RenderViewRef;
/**
* Return `RenderFragmentRef`
*/
renderFragment: RenderFragmentRef;
/**
* Set local variable in a view.
*
* - `contextName` - Name of the local variable in a view.
* - `value` - Value for the local variable in a view.
*/
setLocal(contextName: string, value: any): void;
}
interface HostViewRef {
}
/**
* A reference to an Angular ProtoView.
*
* A ProtoView is a reference to a template for easy creation of views.
* (See {@link AppViewManager#createViewInContainer `AppViewManager#createViewInContainer`} and
* {@link AppViewManager#createRootHostView `AppViewManager#createRootHostView`}).
*
* A `ProtoView` is a factory for creating `View`s.
*
* ## Example
*
* Given this template
*
* ```
* Count: {{items.length}}
*
* ```
*
* The above example we have two {@link ProtoViewRef}s:
*
* Outter {@link ProtoViewRef}:
* ```
* Count: {{items.length}}
*
* ```
*
* Inner {@link ProtoViewRef}:
* ```
* {{item}}
* ```
*
* Notice that the original template is broken down into two separate {@link ProtoViewRef}s.
*/
interface ProtoViewRef {
}
/**
* A location where {@link ViewRef}s can be attached.
*
* A `ViewContainerRef` represents a location in a {@link ViewRef} where other child
* {@link ViewRef}s can be inserted. Adding and removing views is the only way of structurally
* changing the rendered DOM of the application.
*/
interface ViewContainerRef {
viewManager: AppViewManager;
element: ElementRef;
/**
* Remove all {@link ViewRef}s at current location.
*/
clear(): void;
/**
* Return a {@link ViewRef} at specific index.
*/
get(index: number): ViewRef;
/**
* Returns number of {@link ViewRef}s currently attached at this location.
*/
length: number;
/**
* Create and insert a {@link ViewRef} into the view-container.
*
* - `protoViewRef` (optional) {@link ProtoViewRef} - The `ProtoView` to use for creating
* `View` to be inserted at this location. If `ViewContainer` is created at a location
* of inline template, then `protoViewRef` is the `ProtoView` of the template.
* - `atIndex` (optional) `number` - location of insertion point. (Or at the end if unspecified.)
* - `context` (optional) {@link ElementRef} - Context (for expression evaluation) from the
* {@link ElementRef} location. (Or current context if unspecified.)
* - `bindings` (optional) Array of {@link ResolvedBinding} - Used for configuring
* `ElementInjector`.
*
* Returns newly created {@link ViewRef}.
*/
createEmbeddedView(templateRef: TemplateRef, atIndex?: number): ViewRef;
createHostView(protoViewRef?: ProtoViewRef, atIndex?: number, dynamicallyCreatedBindings?: ResolvedBinding[]): HostViewRef;
/**
* Insert a {@link ViewRef} at specefic index.
*
* The index is location at which the {@link ViewRef} should be attached. If omitted it is
* inserted at the end.
*
* Returns the inserted {@link ViewRef}.
*/
insert(viewRef: ViewRef, atIndex?: number): ViewRef;
/**
* Return the index of already inserted {@link ViewRef}.
*/
indexOf(viewRef: ViewRef): number;
/**
* Remove a {@link ViewRef} at specific index.
*
* If the index is omitted last {@link ViewRef} is removed.
*/
remove(atIndex?: number): void;
/**
* The method can be used together with insert to implement a view move, i.e.
* moving the dom nodes while the directives in the view stay intact.
*/
detach(atIndex?: number): ViewRef;
}
/**
* Angular's reference to a component instance.
*
* `ComponentRef` represents a component instance lifecycle and meta information.
*/
interface ComponentRef {
/**
* Location of the component host element.
*/
location: ElementRef;
/**
* Instance of component.
*/
instance: any;
/**
* Returns the host {@link ViewRef}.
*/
hostView: HostViewRef;
/**
* Dispose of the component instance.
*/
dispose(): void;
}
/**
* A wrapper around zones that lets you schedule tasks after it has executed a task.
*
* The wrapper maintains an "inner" and an "mount" `Zone`. The application code will executes
* in the "inner" zone unless `runOutsideAngular` is explicitely called.
*
* A typical application will create a singleton `NgZone`. The outer `Zone` is a fork of the root
* `Zone`. The default `onTurnDone` runs the Angular change detection.
*/
class NgZone {
/**
* Sets the zone hook that is called just before Angular event turn starts.
* It is called once per browser event.
*/
overrideOnTurnStart(onTurnStartFn: Function): void;
/**
* Sets the zone hook that is called immediately after Angular processes
* all pending microtasks.
*/
overrideOnTurnDone(onTurnDoneFn: Function): void;
/**
* Sets the zone hook that is called immediately after the last turn in
* an event completes. At this point Angular will no longer attempt to
* sync the UI. Any changes to the data model will not be reflected in the
* DOM. `onEventDoneFn` is executed outside Angular zone.
*
* This hook is useful for validating application state (e.g. in a test).
*/
overrideOnEventDone(onEventDoneFn: Function, opt_waitForAsync: boolean): void;
/**
* Sets the zone hook that is called when an error is uncaught in the
* Angular zone. The first argument is the error. The second argument is
* the stack trace.
*/
overrideOnErrorHandler(errorHandlingFn: Function): void;
/**
* Runs `fn` in the inner zone and returns whatever it returns.
*
* In a typical app where the inner zone is the Angular zone, this allows one to make use of the
* Angular's auto digest mechanism.
*
* ```
* var zone: NgZone = [ref to the application zone];
*
* zone.run(() => {
* // the change detection will run after this function and the microtasks it enqueues have
* executed.
* });
* ```
*/
run(fn: () => any): any;
/**
* Runs `fn` in the outer zone and returns whatever it returns.
*
* In a typical app where the inner zone is the Angular zone, this allows one to escape Angular's
* auto-digest mechanism.
*
* ```
* var zone: NgZone = [ref to the application zone];
*
* zone.runOutsideAngular(() => {
* element.onClick(() => {
* // Clicking on the element would not trigger the change detection
* });
* });
* ```
*/
runOutsideAngular(fn: () => any): any;
}
class Observable {
observer(generator: any): Object;
}
/**
* Use Rx.Observable but provides an adapter to make it work as specified here:
* https://github.com/jhusain/observable-spec
*
* Once a reference implementation of the spec is available, switch to it.
*/
class EventEmitter extends Observable {
observer(generator: any): Rx.IDisposable;
toRx(): Rx.Observable;
next(value: any): void;
throw(error: any): void;
return(value?: any): void;
}
/**
* A parameter metadata that specifies a dependency.
*
* ```
* class AComponent {
* constructor(@Inject(MyService) aService:MyService) {}
* }
* ```
*/
class InjectMetadata {
token: any;
toString(): string;
}
/**
* A parameter metadata that marks a dependency as optional. {@link Injector} provides `null` if
* the dependency is not found.
*
* ```
* class AComponent {
* constructor(@Optional() aService:MyService) {
* this.aService = aService;
* }
* }
* ```
*/
class OptionalMetadata {
toString(): string;
}
/**
* A marker metadata that marks a class as available to `Injector` for creation. Used by tooling
* for generating constructor stubs.
*
* ```
* class NeedsService {
* constructor(svc:UsefulService) {}
* }
*
* @Injectable
* class UsefulService {}
* ```
*/
class InjectableMetadata {
}
/**
* Specifies that an injector should retrieve a dependency from itself.
*
* ## Example
*
* ```
* class Dependency {
* }
*
* class NeedsDependency {
* constructor(public @Self() dependency:Dependency) {}
* }
*
* var inj = Injector.resolveAndCreate([Dependency, NeedsDependency]);
* var nd = inj.get(NeedsDependency);
* expect(nd.dependency).toBeAnInstanceOf(Dependency);
* ```
*/
class SelfMetadata {
toString(): string;
}
/**
* Specifies that an injector should retrieve a dependency from any injector until reaching the
* closest host.
*
* ## Example
*
* ```
* class Dependency {
* }
*
* class NeedsDependency {
* constructor(public @Host() dependency:Dependency) {}
* }
*
* var parent = Injector.resolveAndCreate([
* bind(Dependency).toClass(HostDependency)
* ]);
* var child = parent.resolveAndCreateChild([]);
* var grandChild = child.resolveAndCreateChild([NeedsDependency, Depedency]);
* var nd = grandChild.get(NeedsDependency);
* expect(nd.dependency).toBeAnInstanceOf(HostDependency);
* ```
*/
class HostMetadata {
toString(): string;
}
/**
* Specifies that the dependency resolution should start from the parent injector.
*
* ## Example
*
*
* ```
* class Service {}
*
* class ParentService implements Service {
* }
*
* class ChildService implements Service {
* constructor(public @SkipSelf() parentService:Service) {}
* }
*
* var parent = Injector.resolveAndCreate([
* bind(Service).toClass(ParentService)
* ]);
* var child = parent.resolveAndCreateChild([
* bind(Service).toClass(ChildSerice)
* ]);
* var s = child.get(Service);
* expect(s).toBeAnInstanceOf(ChildService);
* expect(s.parentService).toBeAnInstanceOf(ParentService);
* ```
*/
class SkipSelfMetadata {
toString(): string;
}
/**
* `DependencyMetadata is used by the framework to extend DI.
*
* Only metadata implementing `DependencyMetadata` are added to the list of dependency
* properties.
*
* For example:
*
* ```
* class Exclude extends DependencyMetadata {}
* class NotDependencyProperty {}
*
* class AComponent {
* constructor(@Exclude @NotDependencyProperty aService:AService) {}
* }
* ```
*
* will create the following dependency:
*
* ```
* new Dependency(Key.get(AService), [new Exclude()])
* ```
*
* The framework can use `new Exclude()` to handle the `aService` dependency
* in a specific way.
*/
class DependencyMetadata {
token: any;
}
/**
* Allows to refer to references which are not yet defined.
*
* This situation arises when the key which we need te refer to for the purposes of DI is declared,
* but not yet defined.
*
* ## Example:
*
* ```
* class Door {
* // Incorrect way to refer to a reference which is defined later.
* // This fails because `Lock` is undefined at this point.
* constructor(lock:Lock) { }
*
* // Correct way to refer to a reference which is defined later.
* // The reference needs to be captured in a closure.
* constructor(@Inject(forwardRef(() => Lock)) lock:Lock) { }
* }
*
* // Only at this point the lock is defined.
* class Lock {
* }
* ```
*/
function forwardRef(forwardRefFn: ForwardRefFn) : Type ;
/**
* Lazily retrieve the reference value.
*
* See: {@link forwardRef}
*/
function resolveForwardRef(type: any) : any ;
interface ForwardRefFn {
(): any;
}
/**
* A dependency injection container used for resolving dependencies.
*
* An `Injector` is a replacement for a `new` operator, which can automatically resolve the
* constructor dependencies.
* In typical use, application code asks for the dependencies in the constructor and they are
* resolved by the `Injector`.
*
* ## Example:
*
* Suppose that we want to inject an `Engine` into class `Car`, we would define it like this:
*
* ```javascript
* class Engine {
* }
*
* class Car {
* constructor(@Inject(Engine) engine) {
* }
* }
*
* ```
*
* Next we need to write the code that creates and instantiates the `Injector`. We then ask for the
* `root` object, `Car`, so that the `Injector` can recursively build all of that object's
* dependencies.
*
* ```javascript
* main() {
* var injector = Injector.resolveAndCreate([Car, Engine]);
*
* // Get a reference to the `root` object, which will recursively instantiate the tree.
* var car = injector.get(Car);
* }
* ```
* Notice that we don't use the `new` operator because we explicitly want to have the `Injector`
* resolve all of the object's dependencies automatically.
*/
class Injector {
/**
* Turns a list of binding definitions into an internal resolved list of resolved bindings.
*
* A resolution is a process of flattening multiple nested lists and converting individual
* bindings into a list of {@link ResolvedBinding}s. The resolution can be cached by `resolve`
* for the {@link Injector} for performance-sensitive code.
*
* @param `bindings` can be a list of `Type`, {@link Binding}, {@link ResolvedBinding}, or a
* recursive list of more bindings.
*
* The returned list is sparse, indexed by `id` for the {@link Key}. It is generally not useful to
* application code
* other than for passing it to {@link Injector} functions that require resolved binding lists,
* such as
* `fromResolvedBindings` and `createChildFromResolved`.
*/
static resolve(bindings: Array): ResolvedBinding[];
/**
* Resolves bindings and creates an injector based on those bindings. This function is slower than
* the corresponding `fromResolvedBindings` because it needs to resolve bindings first. See
* `resolve`
* for the {@link Injector}.
*
* Prefer `fromResolvedBindings` in performance-critical code that creates lots of injectors.
*
* @param `bindings` can be a list of `Type`, {@link Binding}, {@link ResolvedBinding}, or a
* recursive list of more
* bindings.
* @param `depProvider`
*/
static resolveAndCreate(bindings: Array, depProvider?: DependencyProvider): Injector;
/**
* Creates an injector from previously resolved bindings. This bypasses resolution and flattening.
* This API is the recommended way to construct injectors in performance-sensitive parts.
*
* @param `bindings` A sparse list of {@link ResolvedBinding}s. See `resolve` for the
* {@link Injector}.
* @param `depProvider`
*/
static fromResolvedBindings(bindings: ResolvedBinding[], depProvider?: DependencyProvider): Injector;
/**
* Returns debug information about the injector.
*
* This information is included into exceptions thrown by the injector.
*/
debugContext(): any;
/**
* Retrieves an instance from the injector.
*
* @param `token`: usually the `Type` of an object. (Same as the token used while setting up a
* binding).
* @returns an instance represented by the token. Throws if not found.
*/
get(token: any): any;
/**
* Retrieves an instance from the injector.
*
* @param `token`: usually a `Type`. (Same as the token used while setting up a binding).
* @returns an instance represented by the token. Returns `null` if not found.
*/
getOptional(token: any): any;
/**
* Retrieves an instance from the injector.
*
* @param `index`: index of an instance.
* @returns an instance represented by the index. Throws if not found.
*/
getAt(index: number): any;
/**
* Direct parent of this injector.
*/
parent: Injector;
/**
* Internal. Do not use.
*
* We return `any` not to export the InjectorStrategy type.
*/
internalStrategy: any;
/**
* Creates a child injector and loads a new set of bindings into it.
*
* A resolution is a process of flattening multiple nested lists and converting individual
* bindings into a list of {@link ResolvedBinding}s. The resolution can be cached by `resolve`
* for the {@link Injector} for performance-sensitive code.
*
* @param `bindings` can be a list of `Type`, {@link Binding}, {@link ResolvedBinding}, or a
* recursive list of more bindings.
* @param `depProvider`
*/
resolveAndCreateChild(bindings: Array, depProvider?: DependencyProvider): Injector;
/**
* Creates a child injector and loads a new set of {@link ResolvedBinding}s into it.
*
* @param `bindings`: A sparse list of {@link ResolvedBinding}s.
* See `resolve` for the {@link Injector}.
* @param `depProvider`
* @returns a new child {@link Injector}.
*/
createChildFromResolved(bindings: ResolvedBinding[], depProvider?: DependencyProvider): Injector;
/**
* Resolves a binding and instantiates an object in the context of the injector.
*
* @param `binding`: either a type or a binding.
* @returns an object created using binding.
*/
resolveAndInstantiate(binding: Type | Binding): any;
/**
* Instantiates an object using a resolved bindin in the context of the injector.
*
* @param `binding`: a resolved binding
* @returns an object created using binding.
*/
instantiateResolved(binding: ResolvedBinding): any;
displayName: string;
toString(): string;
}
class ProtoInjector {
numberOfBindings: number;
getBindingAtIndex(index: number): any;
}
class BindingWithVisibility {
binding: ResolvedBinding;
visibility: Visibility;
getKeyId(): number;
}
/**
* Used to provide dependencies that cannot be easily expressed as bindings.
*/
interface DependencyProvider {
getDependency(injector: Injector, binding: ResolvedBinding, dependency: Dependency): any;
}
enum Visibility {
Public,
Private,
PublicAndPrivate
}
const UNDEFINED : Object ;
/**
* Describes how_ the {@link Injector} should instantiate a given token.
*
* See {@link bind}.
*
* ## Example
*
* ```javascript
* var injector = Injector.resolveAndCreate([
* new Binding(String, { toValue: 'Hello' })
* ]);
*
* expect(injector.get(String)).toEqual('Hello');
* ```
*/
class Binding {
/**
* Token used when retrieving this binding. Usually the `Type`.
*/
token: any;
/**
* Binds an interface to an implementation / subclass.
*
* ## Example
*
* Becuse `toAlias` and `toClass` are often confused, the example contains both use cases for easy
* comparison.
*
* ```javascript
*
* class Vehicle {}
*
* class Car extends Vehicle {}
*
* var injectorClass = Injector.resolveAndCreate([
* Car,
* new Binding(Vehicle, { toClass: Car })
* ]);
* var injectorAlias = Injector.resolveAndCreate([
* Car,
* new Binding(Vehicle, { toAlias: Car })
* ]);
*
* expect(injectorClass.get(Vehicle)).not.toBe(injectorClass.get(Car));
* expect(injectorClass.get(Vehicle) instanceof Car).toBe(true);
*
* expect(injectorAlias.get(Vehicle)).toBe(injectorAlias.get(Car));
* expect(injectorAlias.get(Vehicle) instanceof Car).toBe(true);
* ```
*/
toClass: Type;
/**
* Binds a key to a value.
*
* ## Example
*
* ```javascript
* var injector = Injector.resolveAndCreate([
* new Binding(String, { toValue: 'Hello' })
* ]);
*
* expect(injector.get(String)).toEqual('Hello');
* ```
*/
toValue: any;
/**
* Binds a key to the alias for an existing key.
*
* An alias means that {@link Injector} returns the same instance as if the alias token was used.
* This is in contrast to `toClass` where a separate instance of `toClass` is returned.
*
* ## Example
*
* Becuse `toAlias` and `toClass` are often confused the example contains both use cases for easy
* comparison.
*
* ```javascript
*
* class Vehicle {}
*
* class Car extends Vehicle {}
*
* var injectorAlias = Injector.resolveAndCreate([
* Car,
* new Binding(Vehicle, { toAlias: Car })
* ]);
* var injectorClass = Injector.resolveAndCreate([
* Car,
* new Binding(Vehicle, { toClass: Car })
* ]);
*
* expect(injectorAlias.get(Vehicle)).toBe(injectorAlias.get(Car));
* expect(injectorAlias.get(Vehicle) instanceof Car).toBe(true);
*
* expect(injectorClass.get(Vehicle)).not.toBe(injectorClass.get(Car));
* expect(injectorClass.get(Vehicle) instanceof Car).toBe(true);
* ```
*/
toAlias: any;
/**
* Binds a key to a function which computes the value.
*
* ## Example
*
* ```javascript
* var injector = Injector.resolveAndCreate([
* new Binding(Number, { toFactory: () => { return 1+2; }}),
* new Binding(String, { toFactory: (value) => { return "Value: " + value; },
* dependencies: [Number] })
* ]);
*
* expect(injector.get(Number)).toEqual(3);
* expect(injector.get(String)).toEqual('Value: 3');
* ```
*/
toFactory: Function;
/**
* Used in conjunction with `toFactory` and specifies a set of dependencies
* (as `token`s) which should be injected into the factory function.
*
* ## Example
*
* ```javascript
* var injector = Injector.resolveAndCreate([
* new Binding(Number, { toFactory: () => { return 1+2; }}),
* new Binding(String, { toFactory: (value) => { return "Value: " + value; },
* dependencies: [Number] })
* ]);
*
* expect(injector.get(Number)).toEqual(3);
* expect(injector.get(String)).toEqual('Value: 3');
* ```
*/
dependencies: any[];
/**
* Converts the {@link Binding} into {@link ResolvedBinding}.
*
* {@link Injector} internally only uses {@link ResolvedBinding}, {@link Binding} contains
* convenience binding syntax.
*/
resolve(): ResolvedBinding;
}
/**
* Helper class for the {@link bind} function.
*/
class BindingBuilder {
token: any;
/**
* Binds an interface to an implementation / subclass.
*
* ## Example
*
* Because `toAlias` and `toClass` are often confused, the example contains both use cases for
* easy comparison.
*
* ```javascript
*
* class Vehicle {}
*
* class Car extends Vehicle {}
*
* var injectorClass = Injector.resolveAndCreate([
* Car,
* bind(Vehicle).toClass(Car)
* ]);
* var injectorAlias = Injector.resolveAndCreate([
* Car,
* bind(Vehicle).toAlias(Car)
* ]);
*
* expect(injectorClass.get(Vehicle)).not.toBe(injectorClass.get(Car));
* expect(injectorClass.get(Vehicle) instanceof Car).toBe(true);
*
* expect(injectorAlias.get(Vehicle)).toBe(injectorAlias.get(Car));
* expect(injectorAlias.get(Vehicle) instanceof Car).toBe(true);
* ```
*/
toClass(type: Type): Binding;
/**
* Binds a key to a value.
*
* ## Example
*
* ```javascript
* var injector = Injector.resolveAndCreate([
* bind(String).toValue('Hello')
* ]);
*
* expect(injector.get(String)).toEqual('Hello');
* ```
*/
toValue(value: any): Binding;
/**
* Binds a key to the alias for an existing key.
*
* An alias means that we will return the same instance as if the alias token was used. (This is
* in contrast to `toClass` where a separate instance of `toClass` will be returned.)
*
* ## Example
*
* Becuse `toAlias` and `toClass` are often confused, the example contains both use cases for easy
* comparison.
*
* ```javascript
*
* class Vehicle {}
*
* class Car extends Vehicle {}
*
* var injectorAlias = Injector.resolveAndCreate([
* Car,
* bind(Vehicle).toAlias(Car)
* ]);
* var injectorClass = Injector.resolveAndCreate([
* Car,
* bind(Vehicle).toClass(Car)
* ]);
*
* expect(injectorAlias.get(Vehicle)).toBe(injectorAlias.get(Car));
* expect(injectorAlias.get(Vehicle) instanceof Car).toBe(true);
*
* expect(injectorClass.get(Vehicle)).not.toBe(injectorClass.get(Car));
* expect(injectorClass.get(Vehicle) instanceof Car).toBe(true);
* ```
*/
toAlias(aliasToken: /*Type*/ any): Binding;
/**
* Binds a key to a function which computes the value.
*
* ## Example
*
* ```javascript
* var injector = Injector.resolveAndCreate([
* bind(Number).toFactory(() => { return 1+2; }),
* bind(String).toFactory((v) => { return "Value: " + v; }, [Number])
* ]);
*
* expect(injector.get(Number)).toEqual(3);
* expect(injector.get(String)).toEqual('Value: 3');
* ```
*/
toFactory(factoryFunction: Function, dependencies?: any[]): Binding;
}
/**
* An internal resolved representation of a {@link Binding} used by the {@link Injector}.
*
* A {@link Binding} is resolved when it has a factory function. Binding to a class, alias, or
* value, are just convenience methods, as {@link Injector} only operates on calling factory
* functions.
*/
class ResolvedBinding {
/**
* A key, usually a `Type`.
*/
key: Key;
/**
* Factory function which can return an instance of an object represented by a key.
*/
factory: Function;
/**
* Arguments (dependencies) to the `factory` function.
*/
dependencies: Dependency[];
}
/**
* @private
*/
class Dependency {
static fromKey(key: Key): Dependency;
key: Key;
optional: boolean;
lowerBoundVisibility: any;
upperBoundVisibility: any;
properties: any[];
}
/**
* Provides an API for imperatively constructing {@link Binding}s.
*
* This is only relevant for JavaScript. See {@link BindingBuilder}.
*
* ## Example
*
* ```javascript
* bind(MyInterface).toClass(MyClass)
*
* ```
*/
function bind(token: any) : BindingBuilder ;
/**
* A unique object used for retrieving items from the {@link Injector}.
*
* Keys have:
* - a system-wide unique `id`.
* - a `token`, usually the `Type` of the instance.
*
* Keys are used internally by the {@link Injector} because their system-wide unique `id`s allow the
* injector to index in arrays rather than looking up items in maps.
*/
class Key {
/**
* Retrieves a `Key` for a token.
*/
static get(token: Object): Key;
/**
* @returns the number of keys registered in the system.
*/
static numberOfKeys: number;
token: Object;
id: number;
displayName: string;
}
/**
* @private
*/
class KeyRegistry {
get(token: Object): Key;
numberOfKeys: number;
}
/**
* Type literals is a Dart-only feature. This is here only so we can x-compile
* to multiple languages.
*/
class TypeLiteral {
type: any;
}
/**
* Thrown when trying to retrieve a dependency by `Key` from {@link Injector}, but the
* {@link Injector} does not have a {@link Binding} for {@link Key}.
*/
class NoBindingError extends AbstractBindingError {
}
/**
* Base class for all errors arising from misconfigured bindings.
*/
class AbstractBindingError extends BaseException {
name: string;
message: string;
keys: Key[];
injectors: Injector[];
constructResolvingMessage: Function;
addKey(injector: Injector, key: Key): void;
context: any;
toString(): string;
}
/**
* Thrown when dependencies form a cycle.
*
* ## Example:
*
* ```javascript
* class A {
* constructor(b:B) {}
* }
* class B {
* constructor(a:A) {}
* }
* ```
*
* Retrieving `A` or `B` throws a `CyclicDependencyError` as the graph above cannot be constructed.
*/
class CyclicDependencyError extends AbstractBindingError {
}
/**
* Thrown when a constructing type returns with an Error.
*
* The `InstantiationError` class contains the original error plus the dependency graph which caused
* this object to be instantiated.
*/
class InstantiationError extends AbstractBindingError {
causeKey: Key;
}
/**
* Thrown when an object other then {@link Binding} (or `Type`) is passed to {@link Injector}
* creation.
*/
class InvalidBindingError extends BaseException {
message: string;
toString(): string;
}
/**
* Thrown when the class has no annotation information.
*
* Lack of annotation information prevents the {@link Injector} from determining which dependencies
* need to be injected into the constructor.
*/
class NoAnnotationError extends BaseException {
name: string;
message: string;
toString(): string;
}
/**
* Thrown when getting an object by index.
*/
class OutOfBoundsError extends BaseException {
message: string;
toString(): string;
}
class OpaqueToken {
toString(): string;
}
/**
* Factory for creating {@link InjectMetadata}.
*/
interface InjectFactory {
new(token: any): InjectMetadata;
(token: any): any;
}
/**
* Factory for creating {@link OptionalMetadata}.
*/
interface OptionalFactory {
new(): OptionalMetadata;
(): any;
}
/**
* Factory for creating {@link InjectableMetadata}.
*/
interface InjectableFactory {
new(): InjectableMetadata;
(): any;
}
/**
* Factory for creating {@link SelfMetadata}.
*/
interface SelfFactory {
new(): SelfMetadata;
(): any;
}
/**
* Factory for creating {@link HostMetadata}.
*/
interface HostFactory {
new(): HostMetadata;
(): any;
}
/**
* Factory for creating {@link SkipSelfMetadata}.
*/
interface SkipSelfFactory {
new(): SkipSelfMetadata;
(): any;
}
/**
* Factory for creating {@link InjectMetadata}.
*/
var Inject : InjectFactory ;
/**
* Factory for creating {@link OptionalMetadata}.
*/
var Optional : OptionalFactory ;
/**
* Factory for creating {@link InjectableMetadata}.
*/
var Injectable : InjectableFactory ;
/**
* Factory for creating {@link SelfMetadata}.
*/
var Self : SelfFactory ;
/**
* Factory for creating {@link HostMetadata}.
*/
var Host : HostFactory ;
/**
* Factory for creating {@link SkipSelfMetadata}.
*/
var SkipSelf : SkipSelfFactory ;
/**
* A collection of the Angular core directives that are likely to be used in each and every Angular
* application.
*
* This collection can be used to quickly enumerate all the built-in directives in the `@View`
* annotation. For example,
* instead of writing:
*
* ```
* import {NgClass, NgIf, NgFor, NgSwitch, NgSwitchWhen, NgSwitchDefault} from 'angular2/angular2';
* import {OtherDirective} from 'myDirectives';
*
* @Component({
* selector: 'my-component'
* })
* @View({
* templateUrl: 'myComponent.html',
* directives: [NgClass, NgIf, NgFor, NgSwitch, NgSwitchWhen, NgSwitchDefault, OtherDirective]
* })
* export class MyComponent {
* ...
* }
* ```
* one could import all the core directives at once:
*
* ```
* import {CORE_DIRECTIVES} from 'angular2/angular2';
* import {OtherDirective} from 'myDirectives';
*
* @Component({
* selector: 'my-component'
* })
* @View({
* templateUrl: 'myComponent.html',
* directives: [CORE_DIRECTIVES, OtherDirective]
* })
* export class MyComponent {
* ...
* }
* ```
*/
const CORE_DIRECTIVES : Type[] ;
/**
* Adds and removes CSS classes based on an {expression} value.
*
* The result of expression is used to add and remove CSS classes using the following logic,
* based on expression's value type:
* - {string} - all the CSS classes (space - separated) are added
* - {Array} - all the CSS classes (Array elements) are added
* - {Object} - each key corresponds to a CSS class name while values
* are interpreted as {boolean} expression. If a given expression
* evaluates to {true} a corresponding CSS class is added - otherwise
* it is removed.
*
* # Example:
*
* ```
*
* Please check errors.
*
* ```
*/
class NgClass {
initialClasses: any;
rawClass: any;
doCheck(): void;
onDestroy(): void;
}
/**
* The `NgFor` directive instantiates a template once per item from an iterable. The context for
* each instantiated template inherits from the outer context with the given loop variable set
* to the current item from the iterable.
*
* It is possible to alias the `index` to a local variable that will be set to the current loop
* iteration in the template context.
*
* When the contents of the iterator changes, `NgFor` makes the corresponding changes to the DOM:
*
* * When an item is added, a new instance of the template is added to the DOM.
* * When an item is removed, its template instance is removed from the DOM.
* * When items are reordered, their respective templates are reordered in the DOM.
*
* # Example
*
* ```
*
*
* Error {{i}} of {{errors.length}}: {{error.message}}
*
*
* ```
*
* # Syntax
*
* - `... `
* - `... `
* - `...
*
* {{errorCount}} errors detected
*
* ```
*
* # Syntax
*
* - `...
`
* - `...
`
* - `...
Normal: {{1 + 2}}
// output "Normal: 3"
* Ignored: {{1 + 2}}
// output "Ignored: {{1 + 2}}"
* ```
*/
class NgNonBindable {
}
/**
* Adds or removes styles based on an {expression}.
*
* When the expression assigned to `ng-style` evaluates to an object, the corresponding element
* styles are updated. Style names to update are taken from the object keys and values - from the
* corresponding object values.
*
* # Example:
*
* ```
*
* ```
*
* In the above example the `text-align` style will be updated based on the `alignExp` value
* changes.
*
* # Syntax
*
* - `
`
* - `
`
*/
class NgStyle {
rawStyle: any;
doCheck(): void;
}
class SwitchView {
create(): void;
destroy(): void;
}
/**
* The `NgSwitch` directive is used to conditionally swap DOM structure on your template based on a
* scope expression.
* Elements within `NgSwitch` but without `NgSwitchWhen` or `NgSwitchDefault` directives will be
* preserved at the location as specified in the template.
*
* `NgSwitch` simply chooses nested elements and makes them visible based on which element matches
* the value obtained from the evaluated expression. In other words, you define a container element
* (where you place the directive), place an expression on the **`[ng-switch]="..."` attribute**),
* define any inner elements inside of the directive and place a `[ng-switch-when]` attribute per
* element.
* The when attribute is used to inform NgSwitch which element to display when the expression is
* evaluated. If a matching expression is not found via a when attribute then an element with the
* default attribute is displayed.
*
* # Example:
*
* ```
*
* ...
* ...
* ...
*
* ```
*/
class NgSwitch {
ngSwitch: any;
}
/**
* Defines a case statement as an expression.
*
* If multiple `NgSwitchWhen` match the `NgSwitch` value, all of them are displayed.
*
* Example:
*
* ```
* // match against a context variable
* ...
*
* // match against a constant string
* ...
* ```
*/
class NgSwitchWhen {
ngSwitchWhen: any;
}
/**
* Defines a default case statement.
*
* Default case statements are displayed when no `NgSwitchWhen` match the `ng-switch` value.
*
* Example:
*
* ```
* ...
* ```
*/
class NgSwitchDefault {
}
/**
* Omitting from external API doc as this is really an abstract internal concept.
*/
class AbstractControl {
validator: Function;
value: any;
status: string;
valid: boolean;
errors: StringMap;
pristine: boolean;
dirty: boolean;
touched: boolean;
untouched: boolean;
valueChanges: Observable;
markAsTouched(): void;
markAsDirty({onlySelf}?: {onlySelf?: boolean}): void;
setParent(parent: ControlGroup | ControlArray): void;
updateValidity({onlySelf}?: {onlySelf?: boolean}): void;
updateValueAndValidity({onlySelf, emitEvent}?: {onlySelf?: boolean, emitEvent?: boolean}): void;
find(path: Array| string): AbstractControl;
getError(errorCode: string, path?: string[]): any;
hasError(errorCode: string, path?: string[]): boolean;
}
/**
* Defines a part of a form that cannot be divided into other controls.
*
* `Control` is one of the three fundamental building blocks used to define forms in Angular, along
* with
* {@link ControlGroup} and {@link ControlArray}.
*/
class Control extends AbstractControl {
updateValue(value: any, {onlySelf, emitEvent, emitModelToViewChange}?:
{onlySelf?: boolean, emitEvent?: boolean, emitModelToViewChange?: boolean}): void;
registerOnChange(fn: Function): void;
}
/**
* Defines a part of a form, of fixed length, that can contain other controls.
*
* A ControlGroup aggregates the values and errors of each {@link Control} in the group. Thus, if
* one of the controls
* in a group is invalid, the entire group is invalid. Similarly, if a control changes its value,
* the entire group
* changes as well.
*
* `ControlGroup` is one of the three fundamental building blocks used to define forms in Angular,
* along with
* {@link Control} and {@link ControlArray}. {@link ControlArray} can also contain other controls,
* but is of variable
* length.
*/
class ControlGroup extends AbstractControl {
controls: StringMap;
addControl(name: string, c: AbstractControl): void;
removeControl(name: string): void;
include(controlName: string): void;
exclude(controlName: string): void;
contains(controlName: string): boolean;
}
/**
* Defines a part of a form, of variable length, that can contain other controls.
*
* A `ControlArray` aggregates the values and errors of each {@link Control} in the group. Thus, if
* one of the controls
* in a group is invalid, the entire group is invalid. Similarly, if a control changes its value,
* the entire group
* changes as well.
*
* `ControlArray` is one of the three fundamental building blocks used to define forms in Angular,
* along with {@link Control} and {@link ControlGroup}. {@link ControlGroup} can also contain
* other controls, but is of fixed length.
*/
class ControlArray extends AbstractControl {
controls: AbstractControl[];
at(index: number): AbstractControl;
push(control: AbstractControl): void;
insert(index: number, control: AbstractControl): void;
removeAt(index: number): void;
length: number;
}
class AbstractControlDirective {
control: AbstractControl;
value: any;
valid: boolean;
errors: StringMap;
pristine: boolean;
dirty: boolean;
touched: boolean;
untouched: boolean;
}
/**
* An interface that {@link NgFormModel} and {@link NgForm} implement.
*
* Only used by the forms module.
*/
interface Form {
addControl(dir: NgControl): void;
removeControl(dir: NgControl): void;
getControl(dir: NgControl): Control;
addControlGroup(dir: NgControlGroup): void;
removeControlGroup(dir: NgControlGroup): void;
getControlGroup(dir: NgControlGroup): ControlGroup;
updateModel(dir: NgControl, value: any): void;
}
/**
* A directive that contains a group of [NgControl].
*
* Only used by the forms module.
*/
class ControlContainer extends AbstractControlDirective {
name: string;
formDirective: Form;
path: string[];
}
/**
* Creates and binds a control with a specified name to a DOM element.
*
* This directive can only be used as a child of {@link NgForm} or {@link NgFormModel}.
*
* # Example
*
* In this example, we create the login and password controls.
* We can work with each control separately: check its validity, get its value, listen to its
* changes.
*
* ```
* @Component({selector: "login-comp"})
* @View({
* directives: [FORM_DIRECTIVES],
* template: `
*
* `})
* class LoginComp {
* onLogIn(value) {
* // value === {login: 'some login', password: 'some password'}
* }
* }
* ```
*
* We can also use ng-model to bind a domain model to the form.
*
* ```
* @Component({selector: "login-comp"})
* @View({
* directives: [FORM_DIRECTIVES],
* template: `
*
* `})
* class LoginComp {
* credentials: {login:string, password:string};
*
* onLogIn() {
* // this.credentials.login === "some login"
* // this.credentials.password === "some password"
* }
* }
* ```
*/
class NgControlName extends NgControl {
update: any;
model: any;
viewModel: any;
ngValidators: QueryList;
onChanges(c: StringMap): void;
onDestroy(): void;
viewToModelUpdate(newValue: any): void;
path: string[];
formDirective: any;
control: Control;
validator: Function;
}
/**
* Binds an existing control to a DOM element.
*
* # Example
*
* In this example, we bind the control to an input element. When the value of the input element
* changes, the value of
* the control will reflect that change. Likewise, if the value of the control changes, the input
* element reflects that
* change.
*
* ```
* @Component({selector: "login-comp"})
* @View({
* directives: [FORM_DIRECTIVES],
* template: ";
onChanges(c: StringMap): void;
path: string[];
control: Control;
validator: Function;
viewToModelUpdate(newValue: any): void;
}
/**
* Binds a domain model to the form.
*
* # Example
* ```
* @Component({selector: "search-comp"})
* @View({
* directives: [FORM_DIRECTIVES],
* template: `
* ;
onChanges(c: StringMap): void;
control: Control;
path: string[];
validator: Function;
viewToModelUpdate(newValue: any): void;
}
/**
* An abstract class that all control directive extend.
*
* It binds a {@link Control} object to a DOM element.
*/
class NgControl extends AbstractControlDirective {
name: string;
valueAccessor: ControlValueAccessor;
validator: Function;
path: string[];
viewToModelUpdate(newValue: any): void;
}
/**
* Creates and binds a control group to a DOM element.
*
* This directive can only be used as a child of {@link NgForm} or {@link NgFormModel}.
*
* # Example
*
* In this example, we create the credentials and personal control groups.
* We can work with each group separately: check its validity, get its value, listen to its changes.
*
* ```
* @Component({selector: "signup-comp"})
* @View({
* directives: [FORM_DIRECTIVES],
* template: `
*
* `})
* class SignupComp {
* onSignUp(value) {
* // value === {personal: {name: 'some name'},
* // credentials: {login: 'some login', password: 'some password'}}
* }
* }
*
* ```
*/
class NgControlGroup extends ControlContainer {
onInit(): void;
onDestroy(): void;
control: ControlGroup;
path: string[];
formDirective: Form;
}
/**
* Binds an existing control group to a DOM element.
*
* # Example
*
* In this example, we bind the control group to the form element, and we bind the login and
* password controls to the
* login and password elements.
*
* ```
* @Component({selector: "login-comp"})
* @View({
* directives: [FORM_DIRECTIVES],
* template: ""
* })
* class LoginComp {
* loginForm:ControlGroup;
*
* constructor() {
* this.loginForm = new ControlGroup({
* login: new Control(""),
* password: new Control("")
* });
* }
*
* onLogin() {
* // this.loginForm.value
* }
* }
*
* ```
*
* We can also use ng-model to bind a domain model to the form.
*
* ```
* @Component({selector: "login-comp"})
* @View({
* directives: [FORM_DIRECTIVES],
* template: ""
* })
* class LoginComp {
* credentials:{login:string, password:string}
* loginForm:ControlGroup;
*
* constructor() {
* this.loginForm = new ControlGroup({
* login: new Control(""),
* password: new Control("")
* });
* }
*
* onLogin() {
* // this.credentials.login === 'some login'
* // this.credentials.password === 'some password'
* }
* }
* ```
*/
class NgFormModel extends ControlContainer implements Form {
form: ControlGroup;
directives: NgControl[];
ngSubmit: any;
onChanges(_: any): void;
formDirective: Form;
control: ControlGroup;
path: string[];
addControl(dir: NgControl): void;
getControl(dir: NgControl): Control;
removeControl(dir: NgControl): void;
addControlGroup(dir: NgControlGroup): void;
removeControlGroup(dir: NgControlGroup): void;
getControlGroup(dir: NgControlGroup): ControlGroup;
updateModel(dir: NgControl, value: any): void;
onSubmit(): boolean;
}
/**
* Creates and binds a form object to a DOM element.
*
* # Example
*
* ```
* @Component({selector: "signup-comp"})
* @View({
* directives: [FORM_DIRECTIVES],
* template: `
*
* `})
* class SignupComp {
* onSignUp(value) {
* // value === {personal: {name: 'some name'},
* // credentials: {login: 'some login', password: 'some password'}}
* }
* }
*
* ```
*/
class NgForm extends ControlContainer implements Form {
form: ControlGroup;
ngSubmit: any;
formDirective: Form;
control: ControlGroup;
path: string[];
controls: StringMap;
addControl(dir: NgControl): void;
getControl(dir: NgControl): Control;
removeControl(dir: NgControl): void;
addControlGroup(dir: NgControlGroup): void;
removeControlGroup(dir: NgControlGroup): void;
getControlGroup(dir: NgControlGroup): ControlGroup;
updateModel(dir: NgControl, value: any): void;
onSubmit(): boolean;
}
/**
* A bridge between a control and a native element.
*
* Please see {@link DefaultValueAccessor} for more information.
*/
interface ControlValueAccessor {
writeValue(obj: any): void;
registerOnChange(fn: any): void;
registerOnTouched(fn: any): void;
}
/**
* The default accessor for writing a value and listening to changes that is used by the
* {@link NgModel}, {@link NgFormControl}, and {@link NgControlName} directives.
*
* # Example
* ```
* as dynamic, so Angular can be notified when options change.
*
* #Example:
*
* ```
*
*
* ```
*/
class NgSelectOption {
}
/**
* The accessor for writing a value and listening to changes on a select element.
*/
class SelectControlValueAccessor implements ControlValueAccessor {
cd: NgControl;
value: string;
onChange: any;
onTouched: any;
renderer: Renderer;
elementRef: ElementRef;
writeValue(value: any): void;
ngClassUntouched: boolean;
ngClassTouched: boolean;
ngClassPristine: boolean;
ngClassDirty: boolean;
ngClassValid: boolean;
ngClassInvalid: boolean;
registerOnChange(fn: () => any): void;
registerOnTouched(fn: () => any): void;
}
/**
* A list of all the form directives used as part of a `@View` annotation.
*
* This is a shorthand for importing them each individually.
*/
const FORM_DIRECTIVES : Type[] ;
/**
* Provides a set of validators used by form controls.
*
* # Example
*
* ```
* var loginControl = new Control("", Validators.required)
* ```
*/
class Validators {
static required(c:Control): StringMap;
static nullValidator(c: any): StringMap;
static compose(validators: Function[]): Function;
static group(c:ControlGroup): StringMap;
static array(c:ControlArray): StringMap;
}
class NgValidator {
validator: Function;
}
class NgRequiredValidator extends NgValidator {
validator: Function;
}
/**
* Creates a form object from a user-specified configuration.
*
* # Example
*
* ```
* import {Component, View, bootstrap} from 'angular2/angular2';
* import {FormBuilder, Validators, FORM_DIRECTIVES, ControlGroup} from 'angular2/forms';
*
* @Component({
* selector: 'login-comp',
* viewBindings: [
* FormBuilder
* ]
* })
* @View({
* template: `
*
* `,
* directives: [
* FORM_DIRECTIVES
* ]
* })
* class LoginComp {
* loginForm: ControlGroup;
*
* constructor(builder: FormBuilder) {
* this.loginForm = builder.group({
* login: ["", Validators.required],
*
* passwordRetry: builder.group({
* password: ["", Validators.required],
* passwordConfirmation: ["", Validators.required]
* })
* });
* }
* }
*
* bootstrap(LoginComp)
* ```
*
* This example creates a {@link ControlGroup} that consists of a `login` {@link Control}, and a
* nested
* {@link ControlGroup} that defines a `password` and a `passwordConfirmation` {@link Control}:
*
* ```
* var loginForm = builder.group({
* login: ["", Validators.required],
*
* passwordRetry: builder.group({
* password: ["", Validators.required],
* passwordConfirmation: ["", Validators.required]
* })
* });
*
* ```
*/
class FormBuilder {
group(controlsConfig: StringMap, extra?: StringMap): ControlGroup;
control(value: Object, validator?: Function): Control;
array(controlsConfig: any[], validator?: Function): ControlArray;
}
const FORM_BINDINGS : Type[] ;
class RenderDirectiveMetadata {
static DIRECTIVE_TYPE: any;
static COMPONENT_TYPE: any;
static create({id, selector, compileChildren, events, host, properties, readAttributes, type,
callOnDestroy, callOnChanges, callDoCheck, callOnInit, callAfterContentInit,
callAfterContentChecked, callAfterViewInit, callAfterViewChecked, changeDetection,
exportAs}: {
id?: string,
selector?: string,
compileChildren?: boolean,
events?: string[],
host?: Map,
properties?: string[],
readAttributes?: string[],
type?: number,
callOnDestroy?: boolean,
callOnChanges?: boolean,
callDoCheck?: boolean,
callOnInit?: boolean,
callAfterContentInit?: boolean,
callAfterContentChecked?: boolean,
callAfterViewInit?: boolean,
callAfterViewChecked?: boolean,
changeDetection?: ChangeDetectionStrategy,
exportAs?: string
}): RenderDirectiveMetadata;
id: any;
selector: string;
compileChildren: boolean;
events: string[];
properties: string[];
readAttributes: string[];
type: number;
callOnDestroy: boolean;
callOnChanges: boolean;
callDoCheck: boolean;
callOnInit: boolean;
callAfterContentInit: boolean;
callAfterContentChecked: boolean;
callAfterViewInit: boolean;
callAfterViewChecked: boolean;
changeDetection: ChangeDetectionStrategy;
exportAs: string;
hostListeners: Map;
hostProperties: Map;
hostAttributes: Map;
}
class DomRenderer extends Renderer {
createRootHostView(hostProtoViewRef: RenderProtoViewRef, fragmentCount: number, hostElementSelector: string): RenderViewWithFragments;
createView(protoViewRef: RenderProtoViewRef, fragmentCount: number): RenderViewWithFragments;
destroyView(viewRef: RenderViewRef): void;
getNativeElementSync(location: RenderElementRef): any;
getRootNodes(fragment: RenderFragmentRef): Node[];
attachFragmentAfterFragment(previousFragmentRef: RenderFragmentRef, fragmentRef: RenderFragmentRef): void;
attachFragmentAfterElement(elementRef: RenderElementRef, fragmentRef: RenderFragmentRef): void;
detachFragment(fragmentRef: RenderFragmentRef): void;
hydrateView(viewRef: RenderViewRef): void;
dehydrateView(viewRef: RenderViewRef): void;
setElementProperty(location: RenderElementRef, propertyName: string, propertyValue: any): void;
setElementAttribute(location: RenderElementRef, attributeName: string, attributeValue: string): void;
setElementClass(location: RenderElementRef, className: string, isAdd: boolean): void;
setElementStyle(location: RenderElementRef, styleName: string, styleValue: string): void;
invokeElementMethod(location: RenderElementRef, methodName: string, args: any[]): void;
setText(viewRef: RenderViewRef, textNodeIndex: number, text: string): void;
setEventDispatcher(viewRef: RenderViewRef, dispatcher: any): void;
}
/**
* A dispatcher for all events happening in a view.
*/
interface RenderEventDispatcher {
/**
* Called when an event was triggered for a on-* attribute on an element.
* @param {Map} locals Locals to be used to evaluate the
* event expressions
* @return {boolean} False if `preventDefault` should be called on the DOM event.
*/
dispatchRenderEvent(elementIndex: number, eventName: string, locals: Map): boolean;
}
class Renderer {
/**
* Creates a root host view that includes the given element.
* Note that the fragmentCount needs to be passed in so that we can create a result
* synchronously even when dealing with webworkers!
*
* @param {RenderProtoViewRef} hostProtoViewRef a RenderProtoViewRef of type
* ProtoViewDto.HOST_VIEW_TYPE
* @param {any} hostElementSelector css selector for the host element (will be queried against the
* main document)
* @return {RenderViewWithFragments} the created view including fragments
*/
createRootHostView(hostProtoViewRef: RenderProtoViewRef, fragmentCount: number, hostElementSelector: string): RenderViewWithFragments;
/**
* Creates a regular view out of the given ProtoView.
* Note that the fragmentCount needs to be passed in so that we can create a result
* synchronously even when dealing with webworkers!
*/
createView(protoViewRef: RenderProtoViewRef, fragmentCount: number): RenderViewWithFragments;
/**
* Destroys the given view after it has been dehydrated and detached
*/
destroyView(viewRef: RenderViewRef): void;
/**
* Attaches a fragment after another fragment.
*/
attachFragmentAfterFragment(previousFragmentRef: RenderFragmentRef, fragmentRef: RenderFragmentRef): void;
/**
* Attaches a fragment after an element.
*/
attachFragmentAfterElement(elementRef: RenderElementRef, fragmentRef: RenderFragmentRef): void;
/**
* Detaches a fragment.
*/
detachFragment(fragmentRef: RenderFragmentRef): void;
/**
* Hydrates a view after it has been attached. Hydration/dehydration is used for reusing views
* inside of the view pool.
*/
hydrateView(viewRef: RenderViewRef): void;
/**
* Dehydrates a view after it has been attached. Hydration/dehydration is used for reusing views
* inside of the view pool.
*/
dehydrateView(viewRef: RenderViewRef): void;
/**
* Returns the native element at the given location.
* Attention: In a WebWorker scenario, this should always return null!
*/
getNativeElementSync(location: RenderElementRef): any;
/**
* Sets a property on an element.
*/
setElementProperty(location: RenderElementRef, propertyName: string, propertyValue: any): void;
/**
* Sets an attribute on an element.
*/
setElementAttribute(location: RenderElementRef, attributeName: string, attributeValue: string): void;
/**
* Sets a class on an element.
*/
setElementClass(location: RenderElementRef, className: string, isAdd: boolean): void;
/**
* Sets a style on an element.
*/
setElementStyle(location: RenderElementRef, styleName: string, styleValue: string): void;
/**
* Calls a method on an element.
*/
invokeElementMethod(location: RenderElementRef, methodName: string, args: any[]): void;
/**
* Sets the value of a text node.
*/
setText(viewRef: RenderViewRef, textNodeIndex: number, text: string): void;
/**
* Sets the dispatcher for all events of the given view
*/
setEventDispatcher(viewRef: RenderViewRef, dispatcher: RenderEventDispatcher): void;
}
/**
* Abstract reference to the element which can be marshaled across web-worker boundary.
*
* This interface is used by the Renderer API.
*/
interface RenderElementRef {
/**
* Reference to the `RenderViewRef` where the `RenderElementRef` is inside of.
*/
renderView: RenderViewRef;
/**
* Index of the element inside the `RenderViewRef`.
*
* This is used internally by the Angular framework to locate elements.
*/
renderBoundElementIndex: number;
}
class RenderViewRef {
}
class RenderProtoViewRef {
}
class RenderFragmentRef {
}
class RenderViewWithFragments {
viewRef: RenderViewRef;
fragmentRefs: RenderFragmentRef[];
}
class ViewDefinition {
componentId: string;
templateAbsUrl: string;
template: string;
directives: RenderDirectiveMetadata[];
styleAbsUrls: string[];
styles: string[];
encapsulation: ViewEncapsulation;
}
const DOCUMENT : OpaqueToken ;
/**
* A unique id (string) for an angular application.
*/
const APP_ID : OpaqueToken ;
/**
* Defines when a compiled template should be stored as a string
* rather than keeping its Nodes to preserve memory.
*/
const MAX_IN_MEMORY_ELEMENTS_PER_TEMPLATE : OpaqueToken ;
/**
* Create trace scope.
*
* Scopes must be strictly nested and are analogous to stack frames, but
* do not have to follow the stack frames. Instead it is recommended that they follow logical
* nesting. You may want to use
* [Event
* Signatures](http://google.github.io/tracing-framework/instrumenting-code.html#custom-events)
* as they are defined in WTF.
*
* Used to mark scope entry. The return value is used to leave the scope.
*
* var myScope = wtfCreateScope('MyClass#myMethod(ascii someVal)');
*
* someMethod() {
* var s = myScope('Foo'); // 'Foo' gets stored in tracing UI
* // DO SOME WORK HERE
* return wtfLeave(s, 123); // Return value 123
* }
*
* Note, adding try-finally block around the work to ensure that `wtfLeave` gets called can
* negatively impact the performance of your application. For this reason we recommend that
* you don't add them to ensure that `wtfLeave` gets called. In production `wtfLeave` is a noop and
* so try-finally block has no value. When debugging perf issues, skipping `wtfLeave`, do to
* exception, will produce incorrect trace, but presence of exception signifies logic error which
* needs to be fixed before the app should be profiled. Add try-finally only when you expect that
* an exception is expected during normal execution while profiling.
*/
var wtfCreateScope : WtfScopeFn ;
/**
* Used to mark end of Scope.
*
* - `scope` to end.
* - `returnValue` (optional) to be passed to the WTF.
*
* Returns the `returnValue for easy chaining.
*/
var wtfLeave : (scope: any, returnValue?: T) => T ;
/**
* Used to mark Async start. Async are similar to scope but they don't have to be strictly nested.
* The return value is used in the call to [endAsync]. Async ranges only work if WTF has been
* enabled.
*
* someMethod() {
* var s = wtfStartTimeRange('HTTP:GET', 'some.url');
* var future = new Future.delay(5).then((_) {
* wtfEndTimeRange(s);
* });
* }
*/
var wtfStartTimeRange : (rangeType: string, action: string) => any ;
/**
* Ends a async time range operation.
* [range] is the return value from [wtfStartTimeRange] Async ranges only work if WTF has been
* enabled.
*/
var wtfEndTimeRange : (range: any) => void ;
interface WtfScopeFn {
(arg0?: any, arg1?: any): any;
}
var ChangeDetectorRef: InjectableReference;
var ApplicationRef: InjectableReference;
var Compiler: InjectableReference;
var AppViewManager: InjectableReference;
var ViewRef: InjectableReference;
var ProtoViewRef: InjectableReference;
var ViewContainerRef: InjectableReference;
var ComponentRef: InjectableReference;
}
declare module "angular2/angular2" {
export = ng;
}
declare module ngWorker {
/**
* Declare reusable UI building blocks for an application.
*
* Each Angular component requires a single `@Component` and at least one `@View` annotation. The
* `@Component`
* annotation specifies when a component is instantiated, and which properties and hostListeners it
* binds to.
*
* When a component is instantiated, Angular
* - creates a shadow DOM for the component.
* - loads the selected template into the shadow DOM.
* - creates all the injectable objects configured with `bindings` and `viewBindings`.
*
* All template expressions and statements are then evaluated against the component instance.
*
* For details on the `@View` annotation, see {@link ViewMetadata}.
*
* ## Example
*
* ```
* @Component({
* selector: 'greet'
* })
* @View({
* template: 'Hello {{name}}!'
* })
* class Greet {
* name: string;
*
* constructor() {
* this.name = 'World';
* }
* }
* ```
*/
class ComponentMetadata extends DirectiveMetadata {
/**
* Defines the used change detection strategy.
*
* When a component is instantiated, Angular creates a change detector, which is responsible for
* propagating the component's bindings.
*
* The `changeDetection` property defines, whether the change detection will be checked every time
* or only when the component tells it to do so.
*/
changeDetection: ChangeDetectionStrategy;
/**
* Defines the set of injectable objects that are visible to its view dom children.
*
* ## Simple Example
*
* Here is an example of a class that can be injected:
*
* ```
* class Greeter {
* greet(name:string) {
* return 'Hello ' + name + '!';
* }
* }
*
* @Directive({
* selector: 'needs-greeter'
* })
* class NeedsGreeter {
* greeter:Greeter;
*
* constructor(greeter:Greeter) {
* this.greeter = greeter;
* }
* }
*
* @Component({
* selector: 'greet',
* viewBindings: [
* Greeter
* ]
* })
* @View({
* template: ``: A live collection of direct child
* directives.
* - `@QueryDescendants(DirectiveType) query:QueryList`: A live collection of any
* child directives.
*
* To inject element-specific special objects, declare the constructor parameter as:
* - `element: ElementRef` to obtain a reference to logical element in the view.
* - `viewContainer: ViewContainerRef` to control child template instantiation, for
* {@link DirectiveMetadata} directives only
* - `bindingPropagation: BindingPropagation` to control change detection in a more granular way.
*
* ## Example
*
* The following example demonstrates how dependency injection resolves constructor arguments in
* practice.
*
*
* Assume this HTML template:
*
* ```
*
* ```
*
* With the following `dependency` decorator and `SomeService` injectable class.
*
* ```
* @Injectable()
* class SomeService {
* }
*
* @Directive({
* selector: '[dependency]',
* properties: [
* 'id: dependency'
* ]
* })
* class Dependency {
* id:string;
* }
* ```
*
* Let's step through the different ways in which `MyDirective` could be declared...
*
*
* ### No injection
*
* Here the constructor is declared with no arguments, therefore nothing is injected into
* `MyDirective`.
*
* ```
* @Directive({ selector: '[my-directive]' })
* class MyDirective {
* constructor() {
* }
* }
* ```
*
* This directive would be instantiated with no dependencies.
*
*
* ### Component-level injection
*
* Directives can inject any injectable instance from the closest component injector or any of its
* parents.
*
* Here, the constructor declares a parameter, `someService`, and injects the `SomeService` type
* from the parent
* component's injector.
* ```
* @Directive({ selector: '[my-directive]' })
* class MyDirective {
* constructor(someService: SomeService) {
* }
* }
* ```
*
* This directive would be instantiated with a dependency on `SomeService`.
*
*
* ### Injecting a directive from the current element
*
* Directives can inject other directives declared on the current element.
*
* ```
* @Directive({ selector: '[my-directive]' })
* class MyDirective {
* constructor(dependency: Dependency) {
* expect(dependency.id).toEqual(3);
* }
* }
* ```
* This directive would be instantiated with `Dependency` declared at the same element, in this case
* `dependency="3"`.
*
* ### Injecting a directive from any ancestor elements
*
* Directives can inject other directives declared on any ancestor element (in the current Shadow
* DOM), i.e. on the current element, the
* parent element, or its parents.
* ```
* @Directive({ selector: '[my-directive]' })
* class MyDirective {
* constructor(@Host() dependency: Dependency) {
* expect(dependency.id).toEqual(2);
* }
* }
* ```
*
* `@Host` checks the current element, the parent, as well as its parents recursively. If
* `dependency="2"` didn't
* exist on the direct parent, this injection would
* have returned
* `dependency="1"`.
*
*
* ### Injecting a live collection of direct child directives
*
*
* A directive can also query for other child directives. Since parent directives are instantiated
* before child directives, a directive can't simply inject the list of child directives. Instead,
* the directive injects a {@link QueryList}, which updates its contents as children are added,
* removed, or moved by a directive that uses a {@link ViewContainerRef} such as a `ng-for`, an
* `ng-if`, or an `ng-switch`.
*
* ```
* @Directive({ selector: '[my-directive]' })
* class MyDirective {
* constructor(@Query(Dependency) dependencies:QueryList) {
* }
* }
* ```
*
* This directive would be instantiated with a {@link QueryList} which contains `Dependency` 4 and
* 6. Here, `Dependency` 5 would not be included, because it is not a direct child.
*
* ### Injecting a live collection of descendant directives
*
* By passing the descendant flag to `@Query` above, we can include the children of the child
* elements.
*
* ```
* @Directive({ selector: '[my-directive]' })
* class MyDirective {
* constructor(@Query(Dependency, {descendants: true}) dependencies:QueryList) {
* }
* }
* ```
*
* This directive would be instantiated with a Query which would contain `Dependency` 4, 5 and 6.
*
* ### Optional injection
*
* The normal behavior of directives is to return an error when a specified dependency cannot be
* resolved. If you
* would like to inject `null` on unresolved dependency instead, you can annotate that dependency
* with `@Optional()`.
* This explicitly permits the author of a template to treat some of the surrounding directives as
* optional.
*
* ```
* @Directive({ selector: '[my-directive]' })
* class MyDirective {
* constructor(@Optional() dependency:Dependency) {
* }
* }
* ```
*
* This directive would be instantiated with a `Dependency` directive found on the current element.
* If none can be
* found, the injector supplies `null` instead of throwing an error.
*
* ## Example
*
* Here we use a decorator directive to simply define basic tool-tip behavior.
*
* ```
* @Directive({
* selector: '[tooltip]',
* properties: [
* 'text: tooltip'
* ],
* host: {
* '(mouseenter)': 'onMouseEnter()',
* '(mouseleave)': 'onMouseLeave()'
* }
* })
* class Tooltip{
* text:string;
* overlay:Overlay; // NOT YET IMPLEMENTED
* overlayManager:OverlayManager; // NOT YET IMPLEMENTED
*
* constructor(overlayManager:OverlayManager) {
* this.overlay = overlay;
* }
*
* onMouseEnter() {
* // exact signature to be determined
* this.overlay = this.overlayManager.open(text, ...);
* }
*
* onMouseLeave() {
* this.overlay.close();
* this.overlay = null;
* }
* }
* ```
* In our HTML template, we can then add this behavior to a `` or any other element with the
* `tooltip` selector,
* like so:
*
* ```
*
* ```
*
* Directives can also control the instantiation, destruction, and positioning of inline template
* elements:
*
* A directive uses a {@link ViewContainerRef} to instantiate, insert, move, and destroy views at
* runtime.
* The {@link ViewContainerRef} is created as a result of `
` element, and represents a
* location in the current view
* where these actions are performed.
*
* Views are always created as children of the current {@link ViewMetadata}, and as siblings of the
* `` element. Thus a
* directive in a child view cannot inject the directive that created it.
*
* Since directives that create views via ViewContainers are common in Angular, and using the full
* `` element syntax is wordy, Angular
* also supports a shorthand notation: `` and ` ` are
* equivalent.
*
* Thus,
*
* ```
*
* ```
*
* Expands in use to:
*
* ```
*
* ```
*
* Notice that although the shorthand places `*foo="bar"` within the ` ` element, the binding for
* the directive
* controller is correctly instantiated on the `` element rather than the `` element.
*
*
* ## Example
*
* Let's suppose we want to implement the `unless` behavior, to conditionally include a template.
*
* Here is a simple directive that triggers on an `unless` selector:
*
* ```
* @Directive({
* selector: '[unless]',
* properties: ['unless']
* })
* export class Unless {
* viewContainer: ViewContainerRef;
* templateRef: TemplateRef;
* prevCondition: boolean;
*
* constructor(viewContainer: ViewContainerRef, templateRef: TemplateRef) {
* this.viewContainer = viewContainer;
* this.templateRef = templateRef;
* this.prevCondition = null;
* }
*
* set unless(newCondition) {
* if (newCondition && (isBlank(this.prevCondition) || !this.prevCondition)) {
* this.prevCondition = true;
* this.viewContainer.clear();
* } else if (!newCondition && (isBlank(this.prevCondition) || this.prevCondition)) {
* this.prevCondition = false;
* this.viewContainer.create(this.templateRef);
* }
* }
* }
* ```
*
* We can then use this `unless` selector in a template:
* ```
*
* ```
*
* Once the directive instantiates the child view, the shorthand notation for the template expands
* and the result is:
*
* ```
*
* ```
*
* Note also that although the ` ` element.
*/
class DirectiveMetadata extends InjectableMetadata {
/**
* The CSS selector that triggers the instantiation of a directive.
*
* Angular only allows directives to trigger on CSS selectors that do not cross element
* boundaries.
*
* `selector` may be declared as one of the following:
*
* - `element-name`: select by element name.
* - `.class`: select by class name.
* - `[attribute]`: select by attribute name.
* - `[attribute=value]`: select by attribute name and value.
* - `:not(sub_selector)`: select only if the element does not match the `sub_selector`.
* - `selector1, selector2`: select if either `selector1` or `selector2` matches.
*
*
* ## Example
*
* Suppose we have a directive with an `input[type=text]` selector.
*
* And the following HTML:
*
* ```html
*