6ddfff5cd5
This is a big change. @matsko also deserves much of the credit for the implementation.
Previously, `ComponentInstruction`s held all the state for async components.
Now, we introduce several subclasses for `Instruction` to describe each type of navigation.
BREAKING CHANGE:
Redirects now use the Link DSL syntax. Before:
```
@RouteConfig([
{ path: '/foo', redirectTo: '/bar' },
{ path: '/bar', component: BarCmp }
])
```
After:
```
@RouteConfig([
{ path: '/foo', redirectTo: ['Bar'] },
{ path: '/bar', component: BarCmp, name: 'Bar' }
])
```
BREAKING CHANGE:
This also introduces `useAsDefault` in the RouteConfig, which makes cases like lazy-loading
and encapsulating large routes with sub-routes easier.
Previously, you could use `redirectTo` like this to expand a URL like `/tab` to `/tab/posts`:
@RouteConfig([
{ path: '/tab', redirectTo: '/tab/users' }
{ path: '/tab', component: TabsCmp, name: 'Tab' }
])
AppCmp { ... }
Now the recommended way to handle this is case is to use `useAsDefault` like so:
```
@RouteConfig([
{ path: '/tab', component: TabsCmp, name: 'Tab' }
])
AppCmp { ... }
@RouteConfig([
{ path: '/posts', component: PostsCmp, useAsDefault: true, name: 'Posts' },
{ path: '/users', component: UsersCmp, name: 'Users' }
])
TabsCmp { ... }
```
In the above example, you can write just `['/Tab']` and the route `Users` is automatically selected as a child route.
Closes #4728
Closes #4228
Closes #4170
Closes #4490
Closes #4694
Closes #5200
Closes #5475
29 lines
853 B
TypeScript
29 lines
853 B
TypeScript
import {Promise, PromiseWrapper} from 'angular2/src/facade/async';
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import {isPresent, Type} from 'angular2/src/facade/lang';
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import {RouteHandler} from './route_handler';
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import {RouteData, BLANK_ROUTE_DATA} from './instruction';
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export class AsyncRouteHandler implements RouteHandler {
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/** @internal */
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_resolvedComponent: Promise<any> = null;
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componentType: Type;
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public data: RouteData;
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constructor(private _loader: Function, data: {[key: string]: any} = null) {
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this.data = isPresent(data) ? new RouteData(data) : BLANK_ROUTE_DATA;
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}
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resolveComponentType(): Promise<any> {
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if (isPresent(this._resolvedComponent)) {
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return this._resolvedComponent;
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}
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return this._resolvedComponent = this._loader().then((componentType) => {
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this.componentType = componentType;
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return componentType;
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});
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}
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}
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