angular2
Version:
Angular 2 - a web framework for modern web apps
295 lines • 19.7 kB
JavaScript
;"use strict";
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
return c > 3 && r && Object.defineProperty(target, key, r), r;
};
var __metadata = (this && this.__metadata) || function (k, v) {
if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
var lang_1 = require("angular2/src/facade/lang");
/**
* A parameter metadata that specifies a dependency.
*
* ### Example ([live demo](http://plnkr.co/edit/6uHYJK?p=preview))
*
* ```typescript
* class Engine {}
*
* @Injectable()
* class Car {
* engine;
* constructor(@Inject("MyEngine") engine:Engine) {
* this.engine = engine;
* }
* }
*
* var injector = Injector.resolveAndCreate([
* provide("MyEngine", {useClass: Engine}),
* Car
* ]);
*
* expect(injector.get(Car).engine instanceof Engine).toBe(true);
* ```
*
* When `@Inject()` is not present, {@link Injector} will use the type annotation of the parameter.
*
* ### Example
*
* ```typescript
* class Engine {}
*
* @Injectable()
* class Car {
* constructor(public engine: Engine) {} //same as constructor(@Inject(Engine) engine:Engine)
* }
*
* var injector = Injector.resolveAndCreate([Engine, Car]);
* expect(injector.get(Car).engine instanceof Engine).toBe(true);
* ```
*/
var InjectMetadata = (function () {
function InjectMetadata(token) {
this.token = token;
}
InjectMetadata.prototype.toString = function () { return "@Inject(" + lang_1.stringify(this.token) + ")"; };
InjectMetadata = __decorate([
lang_1.CONST(),
__metadata('design:paramtypes', [Object])
], InjectMetadata);
return InjectMetadata;
}());
exports.InjectMetadata = InjectMetadata;
/**
* A parameter metadata that marks a dependency as optional. {@link Injector} provides `null` if
* the dependency is not found.
*
* ### Example ([live demo](http://plnkr.co/edit/AsryOm?p=preview))
*
* ```typescript
* class Engine {}
*
* @Injectable()
* class Car {
* engine;
* constructor(@Optional() engine:Engine) {
* this.engine = engine;
* }
* }
*
* var injector = Injector.resolveAndCreate([Car]);
* expect(injector.get(Car).engine).toBeNull();
* ```
*/
var OptionalMetadata = (function () {
function OptionalMetadata() {
}
OptionalMetadata.prototype.toString = function () { return "@Optional()"; };
OptionalMetadata = __decorate([
lang_1.CONST(),
__metadata('design:paramtypes', [])
], OptionalMetadata);
return OptionalMetadata;
}());
exports.OptionalMetadata = OptionalMetadata;
/**
* `DependencyMetadata` is used by the framework to extend DI.
* This is internal to Angular and should not be used directly.
*/
var DependencyMetadata = (function () {
function DependencyMetadata() {
}
Object.defineProperty(DependencyMetadata.prototype, "token", {
get: function () { return null; },
enumerable: true,
configurable: true
});
DependencyMetadata = __decorate([
lang_1.CONST(),
__metadata('design:paramtypes', [])
], DependencyMetadata);
return DependencyMetadata;
}());
exports.DependencyMetadata = DependencyMetadata;
/**
* A marker metadata that marks a class as available to {@link Injector} for creation.
*
* ### Example ([live demo](http://plnkr.co/edit/Wk4DMQ?p=preview))
*
* ```typescript
* @Injectable()
* class UsefulService {}
*
* @Injectable()
* class NeedsService {
* constructor(public service:UsefulService) {}
* }
*
* var injector = Injector.resolveAndCreate([NeedsService, UsefulService]);
* expect(injector.get(NeedsService).service instanceof UsefulService).toBe(true);
* ```
* {@link Injector} will throw {@link NoAnnotationError} when trying to instantiate a class that
* does not have `@Injectable` marker, as shown in the example below.
*
* ```typescript
* class UsefulService {}
*
* class NeedsService {
* constructor(public service:UsefulService) {}
* }
*
* var injector = Injector.resolveAndCreate([NeedsService, UsefulService]);
* expect(() => injector.get(NeedsService)).toThrowError();
* ```
*/
var InjectableMetadata = (function () {
function InjectableMetadata() {
}
InjectableMetadata = __decorate([
lang_1.CONST(),
__metadata('design:paramtypes', [])
], InjectableMetadata);
return InjectableMetadata;
}());
exports.InjectableMetadata = InjectableMetadata;
/**
* Specifies that an {@link Injector} should retrieve a dependency only from itself.
*
* ### Example ([live demo](http://plnkr.co/edit/NeagAg?p=preview))
*
* ```typescript
* class Dependency {
* }
*
* @Injectable()
* class NeedsDependency {
* dependency;
* constructor(@Self() dependency:Dependency) {
* this.dependency = dependency;
* }
* }
*
* var inj = Injector.resolveAndCreate([Dependency, NeedsDependency]);
* var nd = inj.get(NeedsDependency);
*
* expect(nd.dependency instanceof Dependency).toBe(true);
*
* var inj = Injector.resolveAndCreate([Dependency]);
* var child = inj.resolveAndCreateChild([NeedsDependency]);
* expect(() => child.get(NeedsDependency)).toThrowError();
* ```
*/
var SelfMetadata = (function () {
function SelfMetadata() {
}
SelfMetadata.prototype.toString = function () { return "@Self()"; };
SelfMetadata = __decorate([
lang_1.CONST(),
__metadata('design:paramtypes', [])
], SelfMetadata);
return SelfMetadata;
}());
exports.SelfMetadata = SelfMetadata;
/**
* Specifies that the dependency resolution should start from the parent injector.
*
* ### Example ([live demo](http://plnkr.co/edit/Wchdzb?p=preview))
*
* ```typescript
* class Dependency {
* }
*
* @Injectable()
* class NeedsDependency {
* dependency;
* constructor(@SkipSelf() dependency:Dependency) {
* this.dependency = dependency;
* }
* }
*
* var parent = Injector.resolveAndCreate([Dependency]);
* var child = parent.resolveAndCreateChild([NeedsDependency]);
* expect(child.get(NeedsDependency).dependency instanceof Depedency).toBe(true);
*
* var inj = Injector.resolveAndCreate([Dependency, NeedsDependency]);
* expect(() => inj.get(NeedsDependency)).toThrowError();
* ```
*/
var SkipSelfMetadata = (function () {
function SkipSelfMetadata() {
}
SkipSelfMetadata.prototype.toString = function () { return "@SkipSelf()"; };
SkipSelfMetadata = __decorate([
lang_1.CONST(),
__metadata('design:paramtypes', [])
], SkipSelfMetadata);
return SkipSelfMetadata;
}());
exports.SkipSelfMetadata = SkipSelfMetadata;
/**
* Specifies that an injector should retrieve a dependency from any injector until reaching the
* closest host.
*
* In Angular, a component element is automatically declared as a host for all the injectors in
* its view.
*
* ### Example ([live demo](http://plnkr.co/edit/GX79pV?p=preview))
*
* In the following example `App` contains `ParentCmp`, which contains `ChildDirective`.
* So `ParentCmp` is the host of `ChildDirective`.
*
* `ChildDirective` depends on two services: `HostService` and `OtherService`.
* `HostService` is defined at `ParentCmp`, and `OtherService` is defined at `App`.
*
*```typescript
* class OtherService {}
* class HostService {}
*
* @Directive({
* selector: 'child-directive'
* })
* class ChildDirective {
* constructor(@Optional() @Host() os:OtherService, @Optional() @Host() hs:HostService){
* console.log("os is null", os);
* console.log("hs is NOT null", hs);
* }
* }
*
* @Component({
* selector: 'parent-cmp',
* providers: [HostService],
* template: `
* Dir: <child-directive></child-directive>
* `,
* directives: [ChildDirective]
* })
* class ParentCmp {
* }
*
* @Component({
* selector: 'app',
* providers: [OtherService],
* template: `
* Parent: <parent-cmp></parent-cmp>
* `,
* directives: [ParentCmp]
* })
* class App {
* }
*
* bootstrap(App);
*```
*/
var HostMetadata = (function () {
function HostMetadata() {
}
HostMetadata.prototype.toString = function () { return "@Host()"; };
HostMetadata = __decorate([
lang_1.CONST(),
__metadata('design:paramtypes', [])
], HostMetadata);
return HostMetadata;
}());
exports.HostMetadata = HostMetadata;
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}\n}\n\n/**\n * A parameter metadata that marks a dependency as optional. {@link Injector} provides `null` if\n * the dependency is not found.\n *\n * ### Example ([live demo](http://plnkr.co/edit/AsryOm?p=preview))\n *\n * ```typescript\n * class Engine {}\n *\n * @Injectable()\n * class Car {\n *   engine;\n *   constructor(@Optional() engine:Engine) {\n *     this.engine = engine;\n *   }\n * }\n *\n * var injector = Injector.resolveAndCreate([Car]);\n * expect(injector.get(Car).engine).toBeNull();\n * ```\n */\n@CONST()\nexport class OptionalMetadata {\n  toString(): string { return `@Optional()`; }\n}\n\n/**\n * `DependencyMetadata` is used by the framework to extend DI.\n * This is internal to Angular and should not be used directly.\n */\n@CONST()\nexport class DependencyMetadata {\n  get token() { return null; }\n}\n\n/**\n * A marker metadata that marks a class as available to {@link Injector} for creation.\n *\n * ### Example ([live demo](http://plnkr.co/edit/Wk4DMQ?p=preview))\n *\n * ```typescript\n * @Injectable()\n * class UsefulService {}\n *\n * @Injectable()\n * class NeedsService {\n *   constructor(public service:UsefulService) {}\n * }\n *\n * var injector = Injector.resolveAndCreate([NeedsService, UsefulService]);\n * expect(injector.get(NeedsService).service instanceof UsefulService).toBe(true);\n * ```\n * {@link Injector} will throw {@link NoAnnotationError} when trying to instantiate a class that\n * does not have `@Injectable` marker, as shown in the example below.\n *\n * ```typescript\n * class UsefulService {}\n *\n * class NeedsService {\n *   constructor(public service:UsefulService) {}\n * }\n *\n * var injector = Injector.resolveAndCreate([NeedsService, UsefulService]);\n * expect(() => injector.get(NeedsService)).toThrowError();\n * ```\n */\n@CONST()\nexport class InjectableMetadata {\n  constructor() {}\n}\n\n/**\n * Specifies that an {@link Injector} should retrieve a dependency only from itself.\n *\n * ### Example ([live demo](http://plnkr.co/edit/NeagAg?p=preview))\n *\n * ```typescript\n * class Dependency {\n * }\n *\n * @Injectable()\n * class NeedsDependency {\n *   dependency;\n *   constructor(@Self() dependency:Dependency) {\n *     this.dependency = dependency;\n *   }\n * }\n *\n * var inj = Injector.resolveAndCreate([Dependency, NeedsDependency]);\n * var nd = inj.get(NeedsDependency);\n *\n * expect(nd.dependency instanceof Dependency).toBe(true);\n *\n * var inj = Injector.resolveAndCreate([Dependency]);\n * var child = inj.resolveAndCreateChild([NeedsDependency]);\n * expect(() => child.get(NeedsDependency)).toThrowError();\n * ```\n */\n@CONST()\nexport class SelfMetadata {\n  toString(): string { return `@Self()`; }\n}\n\n/**\n * Specifies that the dependency resolution should start from the parent injector.\n *\n * ### Example ([live demo](http://plnkr.co/edit/Wchdzb?p=preview))\n *\n * ```typescript\n * class Dependency {\n * }\n *\n * @Injectable()\n * class NeedsDependency {\n *   dependency;\n *   constructor(@SkipSelf() dependency:Dependency) {\n *     this.dependency = dependency;\n *   }\n * }\n *\n * var parent = Injector.resolveAndCreate([Dependency]);\n * var child = parent.resolveAndCreateChild([NeedsDependency]);\n * expect(child.get(NeedsDependency).dependency instanceof Depedency).toBe(true);\n *\n * var inj = Injector.resolveAndCreate([Dependency, NeedsDependency]);\n * expect(() => inj.get(NeedsDependency)).toThrowError();\n * ```\n */\n@CONST()\nexport class SkipSelfMetadata {\n  toString(): string { return `@SkipSelf()`; }\n}\n\n/**\n * Specifies that an injector should retrieve a dependency from any injector until reaching the\n * closest host.\n *\n * In Angular, a component element is automatically declared as a host for all the injectors in\n * its view.\n *\n * ### Example ([live demo](http://plnkr.co/edit/GX79pV?p=preview))\n *\n * In the following example `App` contains `ParentCmp`, which contains `ChildDirective`.\n * So `ParentCmp` is the host of `ChildDirective`.\n *\n * `ChildDirective` depends on two services: `HostService` and `OtherService`.\n * `HostService` is defined at `ParentCmp`, and `OtherService` is defined at `App`.\n *\n *```typescript\n * class OtherService {}\n * class HostService {}\n *\n * @Directive({\n *   selector: 'child-directive'\n * })\n * class ChildDirective {\n *   constructor(@Optional() @Host() os:OtherService, @Optional() @Host() hs:HostService){\n *     console.log(\"os is null\", os);\n *     console.log(\"hs is NOT null\", hs);\n *   }\n * }\n *\n * @Component({\n *   selector: 'parent-cmp',\n *   providers: [HostService],\n *   template: `\n *     Dir: <child-directive></child-directive>\n *   `,\n *   directives: [ChildDirective]\n * })\n * class ParentCmp {\n * }\n *\n * @Component({\n *   selector: 'app',\n *   providers: [OtherService],\n *   template: `\n *     Parent: <parent-cmp></parent-cmp>\n *   `,\n *   directives: [ParentCmp]\n * })\n * class App {\n * }\n *\n * bootstrap(App);\n *```\n */\n@CONST()\nexport class HostMetadata {\n  toString(): string { return `@Host()`; }\n}\n"]}