_afterAllClosed and _afterOpen subjects now delegate to state of pare…

…ntDialog & removed spaces from inside import braces

src/demo-app/dialog/dialog-demo.ts

@@ -1,5 +1,5 @@
-import { Component, Inject } from '@angular/core';
-import { DOCUMENT } from '@angular/platform-browser';
+import {Component, Inject} from '@angular/core';
+import {DOCUMENT} from '@angular/platform-browser';
 import {MdDialog, MdDialogRef, MdDialogConfig} from '@angular/material';
 
 @Component({

src/lib/dialog/dialog.ts

@@ -22,17 +22,22 @@ import {MdDialogContainer} from './dialog-container';
 @Injectable()
 export class MdDialog {
   private _openDialogsAtThisLevel: MdDialogRef<any>[] = [];
+  private _afterAllClosedAtThisLevel = new Subject<void>();
+  private _afterOpenAtThisLevel = new Subject<MdDialogRef<any>>();
 
   /** Keeps track of the currently-open dialogs. */
   get _openDialogs(): MdDialogRef<any>[] {
     return this._parentDialog ? this._parentDialog._openDialogs : this._openDialogsAtThisLevel;
   }
 
   /** Subject for notifying the user that all open dialogs have finished closing. */
-  private _afterAllClosed = new Subject<void>();
-
+  get _afterOpen(): Subject<MdDialogRef<any>> {
+    return this._parentDialog ? this._parentDialog._afterOpen : this._afterOpenAtThisLevel;
+  }
   /** Subject for notifying the user that a dialog has opened. */
-  private _afterOpen = new Subject<MdDialogRef<any>>();
+  get _afterAllClosed(): Subject<void> {
+    return this._parentDialog ? this._parentDialog._afterAllClosed : this._afterAllClosedAtThisLevel;
+  }
 
   /** Gets an observable that is notified when a dialog has been opened. */
   afterOpen: Observable<MdDialogRef<any>> = this._afterOpen.asObservable();