angular2
Version:
Angular 2 - a web framework for modern web apps
160 lines • 23.7 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 __param = (this && this.__param) || function (paramIndex, decorator) {
return function (target, key) { decorator(target, key, paramIndex); }
};
var async_1 = require('angular2/src/facade/async');
var collection_1 = require('angular2/src/facade/collection');
var lang_1 = require('angular2/src/facade/lang');
var exceptions_1 = require('angular2/src/facade/exceptions');
var core_1 = require('angular2/core');
var routerMod = require('./router');
var instruction_1 = require('./instruction');
var hookMod = require('./lifecycle_annotations');
var route_lifecycle_reflector_1 = require('./route_lifecycle_reflector');
var _resolveToTrue = async_1.PromiseWrapper.resolve(true);
/**
* A router outlet is a placeholder that Angular dynamically fills based on the application's route.
*
* ## Use
*
* ```
* <router-outlet></router-outlet>
* ```
*/
var RouterOutlet = (function () {
function RouterOutlet(_elementRef, _loader, _parentRouter, nameAttr) {
this._elementRef = _elementRef;
this._loader = _loader;
this._parentRouter = _parentRouter;
this.name = null;
this._componentRef = null;
this._currentInstruction = null;
if (lang_1.isPresent(nameAttr)) {
this.name = nameAttr;
this._parentRouter.registerAuxOutlet(this);
}
else {
this._parentRouter.registerPrimaryOutlet(this);
}
}
/**
* Called by the Router to instantiate a new component during the commit phase of a navigation.
* This method in turn is responsible for calling the `routerOnActivate` hook of its child.
*/
RouterOutlet.prototype.activate = function (nextInstruction) {
var _this = this;
var previousInstruction = this._currentInstruction;
this._currentInstruction = nextInstruction;
var componentType = nextInstruction.componentType;
var childRouter = this._parentRouter.childRouter(componentType);
var providers = core_1.Injector.resolve([
core_1.provide(instruction_1.RouteData, { useValue: nextInstruction.routeData }),
core_1.provide(instruction_1.RouteParams, { useValue: new instruction_1.RouteParams(nextInstruction.params) }),
core_1.provide(routerMod.Router, { useValue: childRouter })
]);
return this._loader.loadNextToLocation(componentType, this._elementRef, providers)
.then(function (componentRef) {
_this._componentRef = componentRef;
if (route_lifecycle_reflector_1.hasLifecycleHook(hookMod.routerOnActivate, componentType)) {
return _this._componentRef.instance
.routerOnActivate(nextInstruction, previousInstruction);
}
});
};
/**
* Called by the {@link Router} during the commit phase of a navigation when an outlet
* reuses a component between different routes.
* This method in turn is responsible for calling the `routerOnReuse` hook of its child.
*/
RouterOutlet.prototype.reuse = function (nextInstruction) {
var previousInstruction = this._currentInstruction;
this._currentInstruction = nextInstruction;
if (lang_1.isBlank(this._componentRef)) {
throw new exceptions_1.BaseException("Cannot reuse an outlet that does not contain a component.");
}
return async_1.PromiseWrapper.resolve(route_lifecycle_reflector_1.hasLifecycleHook(hookMod.routerOnReuse, this._currentInstruction.componentType) ?
this._componentRef.instance
.routerOnReuse(nextInstruction, previousInstruction) :
true);
};
/**
* Called by the {@link Router} when an outlet disposes of a component's contents.
* This method in turn is responsible for calling the `routerOnDeactivate` hook of its child.
*/
RouterOutlet.prototype.deactivate = function (nextInstruction) {
var _this = this;
var next = _resolveToTrue;
if (lang_1.isPresent(this._componentRef) && lang_1.isPresent(this._currentInstruction) &&
route_lifecycle_reflector_1.hasLifecycleHook(hookMod.routerOnDeactivate, this._currentInstruction.componentType)) {
next = async_1.PromiseWrapper.resolve(this._componentRef.instance
.routerOnDeactivate(nextInstruction, this._currentInstruction));
}
return next.then(function (_) {
if (lang_1.isPresent(_this._componentRef)) {
_this._componentRef.dispose();
_this._componentRef = null;
}
});
};
/**
* Called by the {@link Router} during recognition phase of a navigation.
*
* If this resolves to `false`, the given navigation is cancelled.
*
* This method delegates to the child component's `routerCanDeactivate` hook if it exists,
* and otherwise resolves to true.
*/
RouterOutlet.prototype.routerCanDeactivate = function (nextInstruction) {
if (lang_1.isBlank(this._currentInstruction)) {
return _resolveToTrue;
}
if (route_lifecycle_reflector_1.hasLifecycleHook(hookMod.routerCanDeactivate, this._currentInstruction.componentType)) {
return async_1.PromiseWrapper.resolve(this._componentRef.instance
.routerCanDeactivate(nextInstruction, this._currentInstruction));
}
return _resolveToTrue;
};
/**
* Called by the {@link Router} during recognition phase of a navigation.
*
* If the new child component has a different Type than the existing child component,
* this will resolve to `false`. You can't reuse an old component when the new component
* is of a different Type.
*
* Otherwise, this method delegates to the child component's `routerCanReuse` hook if it exists,
* or resolves to true if the hook is not present.
*/
RouterOutlet.prototype.routerCanReuse = function (nextInstruction) {
var result;
if (lang_1.isBlank(this._currentInstruction) ||
this._currentInstruction.componentType != nextInstruction.componentType) {
result = false;
}
else if (route_lifecycle_reflector_1.hasLifecycleHook(hookMod.routerCanReuse, this._currentInstruction.componentType)) {
result = this._componentRef.instance
.routerCanReuse(nextInstruction, this._currentInstruction);
}
else {
result = nextInstruction == this._currentInstruction ||
(lang_1.isPresent(nextInstruction.params) && lang_1.isPresent(this._currentInstruction.params) &&
collection_1.StringMapWrapper.equals(nextInstruction.params, this._currentInstruction.params));
}
return async_1.PromiseWrapper.resolve(result);
};
RouterOutlet = __decorate([
core_1.Directive({ selector: 'router-outlet' }),
__param(3, core_1.Attribute('name')),
__metadata('design:paramtypes', [core_1.ElementRef, core_1.DynamicComponentLoader, routerMod.Router, String])
], RouterOutlet);
return RouterOutlet;
})();
exports.RouterOutlet = RouterOutlet;
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{PromiseWrapper} from 'angular2/src/facade/async';\nimport {StringMapWrapper} from 'angular2/src/facade/collection';\nimport {isBlank, isPresent} from 'angular2/src/facade/lang';\nimport {BaseException, WrappedException} from 'angular2/src/facade/exceptions';\n\nimport {\n  Directive,\n  Attribute,\n  DynamicComponentLoader,\n  ComponentRef,\n  ElementRef,\n  Injector,\n  provide,\n  Dependency\n} from 'angular2/core';\n\nimport * as routerMod from './router';\nimport {ComponentInstruction, RouteParams, RouteData} from './instruction';\nimport * as hookMod from './lifecycle_annotations';\nimport {hasLifecycleHook} from './route_lifecycle_reflector';\nimport {OnActivate, CanReuse, OnReuse, OnDeactivate, CanDeactivate} from './interfaces';\n\nlet _resolveToTrue = PromiseWrapper.resolve(true);\n\n/**\n * A router outlet is a placeholder that Angular dynamically fills based on the application's route.\n *\n * ## Use\n *\n * ```\n * <router-outlet></router-outlet>\n * ```\n */\n@Directive({selector: 'router-outlet'})\nexport class RouterOutlet {\n  name: string = null;\n  private _componentRef: ComponentRef = null;\n  private _currentInstruction: ComponentInstruction = null;\n\n  constructor(private _elementRef: ElementRef, private _loader: DynamicComponentLoader,\n              private _parentRouter: routerMod.Router, @Attribute('name') nameAttr: string) {\n    if (isPresent(nameAttr)) {\n      this.name = nameAttr;\n      this._parentRouter.registerAuxOutlet(this);\n    } else {\n      this._parentRouter.registerPrimaryOutlet(this);\n    }\n  }\n\n  /**\n   * Called by the Router to instantiate a new component during the commit phase of a navigation.\n   * This method in turn is responsible for calling the `routerOnActivate` hook of its child.\n   */\n  activate(nextInstruction: ComponentInstruction): Promise<any> {\n    var previousInstruction = this._currentInstruction;\n    this._currentInstruction = nextInstruction;\n    var componentType = nextInstruction.componentType;\n    var childRouter = this._parentRouter.childRouter(componentType);\n\n    var providers = Injector.resolve([\n      provide(RouteData, {useValue: nextInstruction.routeData}),\n      provide(RouteParams, {useValue: new RouteParams(nextInstruction.params)}),\n      provide(routerMod.Router, {useValue: childRouter})\n    ]);\n    return this._loader.loadNextToLocation(componentType, this._elementRef, providers)\n        .then((componentRef) => {\n          this._componentRef = componentRef;\n          if (hasLifecycleHook(hookMod.routerOnActivate, componentType)) {\n            return (<OnActivate>this._componentRef.instance)\n                .routerOnActivate(nextInstruction, previousInstruction);\n          }\n        });\n  }\n\n  /**\n   * Called by the {@link Router} during the commit phase of a navigation when an outlet\n   * reuses a component between different routes.\n   * This method in turn is responsible for calling the `routerOnReuse` hook of its child.\n   */\n  reuse(nextInstruction: ComponentInstruction): Promise<any> {\n    var previousInstruction = this._currentInstruction;\n    this._currentInstruction = nextInstruction;\n\n    if (isBlank(this._componentRef)) {\n      throw new BaseException(`Cannot reuse an outlet that does not contain a component.`);\n    }\n    return PromiseWrapper.resolve(\n        hasLifecycleHook(hookMod.routerOnReuse, this._currentInstruction.componentType) ?\n            (<OnReuse>this._componentRef.instance)\n                .routerOnReuse(nextInstruction, previousInstruction) :\n            true);\n  }\n\n  /**\n   * Called by the {@link Router} when an outlet disposes of a component's contents.\n   * This method in turn is responsible for calling the `routerOnDeactivate` hook of its child.\n   */\n  deactivate(nextInstruction: ComponentInstruction): Promise<any> {\n    var next = _resolveToTrue;\n    if (isPresent(this._componentRef) && isPresent(this._currentInstruction) &&\n        hasLifecycleHook(hookMod.routerOnDeactivate, this._currentInstruction.componentType)) {\n      next = PromiseWrapper.resolve(\n          (<OnDeactivate>this._componentRef.instance)\n              .routerOnDeactivate(nextInstruction, this._currentInstruction));\n    }\n    return next.then((_) => {\n      if (isPresent(this._componentRef)) {\n        this._componentRef.dispose();\n        this._componentRef = null;\n      }\n    });\n  }\n\n  /**\n   * Called by the {@link Router} during recognition phase of a navigation.\n   *\n   * If this resolves to `false`, the given navigation is cancelled.\n   *\n   * This method delegates to the child component's `routerCanDeactivate` hook if it exists,\n   * and otherwise resolves to true.\n   */\n  routerCanDeactivate(nextInstruction: ComponentInstruction): Promise<boolean> {\n    if (isBlank(this._currentInstruction)) {\n      return _resolveToTrue;\n    }\n    if (hasLifecycleHook(hookMod.routerCanDeactivate, this._currentInstruction.componentType)) {\n      return PromiseWrapper.resolve(\n          (<CanDeactivate>this._componentRef.instance)\n              .routerCanDeactivate(nextInstruction, this._currentInstruction));\n    }\n    return _resolveToTrue;\n  }\n\n  /**\n   * Called by the {@link Router} during recognition phase of a navigation.\n   *\n   * If the new child component has a different Type than the existing child component,\n   * this will resolve to `false`. You can't reuse an old component when the new component\n   * is of a different Type.\n   *\n   * Otherwise, this method delegates to the child component's `routerCanReuse` hook if it exists,\n   * or resolves to true if the hook is not present.\n   */\n  routerCanReuse(nextInstruction: ComponentInstruction): Promise<boolean> {\n    var result;\n\n    if (isBlank(this._currentInstruction) ||\n        this._currentInstruction.componentType != nextInstruction.componentType) {\n      result = false;\n    } else if (hasLifecycleHook(hookMod.routerCanReuse, this._currentInstruction.componentType)) {\n      result = (<CanReuse>this._componentRef.instance)\n                   .routerCanReuse(nextInstruction, this._currentInstruction);\n    } else {\n      result = nextInstruction == this._currentInstruction ||\n               (isPresent(nextInstruction.params) && isPresent(this._currentInstruction.params) &&\n                StringMapWrapper.equals(nextInstruction.params, this._currentInstruction.params));\n    }\n    return PromiseWrapper.resolve(result);\n  }\n}\n"]}