feat(dialog): add a config option for passing in data

Adds the ability to pass in data to a dialog via the `data` property. While this was previously possible through the `dialogRef.componentInstance.someUserSuppliedProperty`, it wasn't the most intuitive. The new approach looks like this:

```
dialog.open(SomeDialog, {
  data: {
    hello: 'world'
  }
});

class SometDialog {
  constructor(data: MdDialogData) {
    console.log(data['hello']);
  }
}
```

Fixes #2181.

Author: crisbeto

src/demo-app/dialog/dialog-demo.html

@@ -26,7 +26,13 @@ <h2>Dialog position</h2>
 
     <h2>Other options</h2>
 
-    <md-checkbox [(ngModel)]="config.disableClose">Disable close</md-checkbox>
+    <p>
+      <md-checkbox [(ngModel)]="config.disableClose">Disable close</md-checkbox>
+    </p>
+
+    <p>
+      <md-input [(ngModel)]="config.data.message" placeholder="Dialog message"></md-input>
+    </p>
   </md-card-content>
 </md-card>
 

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

@@ -1,5 +1,5 @@
 import {Component} from '@angular/core';
-import {MdDialog, MdDialogRef, MdDialogConfig} from '@angular/material';
+import {MdDialog, MdDialogRef, MdDialogConfig, MdDialogData} from '@angular/material';
 
 @Component({
   moduleId: module.id,
@@ -19,6 +19,9 @@ export class DialogDemo {
       bottom: '',
       left: '',
       right: ''
+    },
+    data: {
+      message: 'Jazzy jazz jazz'
     }
   };
 
@@ -27,7 +30,7 @@ export class DialogDemo {
   openJazz() {
     this.dialogRef = this.dialog.open(JazzDialog, this.config);
 
-    this.dialogRef.afterClosed().subscribe(result => {
+    this.dialogRef.afterClosed().subscribe((result: string) => {
       this.lastCloseResult = result;
       this.dialogRef = null;
     });
@@ -44,13 +47,13 @@ export class DialogDemo {
   template: `
   <p>It's Jazz!</p>
   <p><label>How much? <input #howMuch></label></p>
-  <p> {{ jazzMessage }} </p>
+  <p> {{ data.message }} </p>
   <button type="button" (click)="dialogRef.close(howMuch.value)">Close dialog</button>`
 })
 export class JazzDialog {
-  jazzMessage = 'Jazzy jazz jazz';
-
-  constructor(public dialogRef: MdDialogRef<JazzDialog>) { }
+  constructor(
+    public dialogRef: MdDialogRef<JazzDialog>,
+    public data: MdDialogData) { }
 }
 
 

src/lib/dialog/README.md

@@ -14,12 +14,13 @@ MdDialog is a service, which opens dialogs components in the view.
 
 | Key | Description  |
 | --- | ------------ |
-| `role: DialogRole = 'dialog'` | The ARIA role of the dialog element. Possible values are `dialog` and `alertdialog`. Optional. |
-| `disableClose: boolean = false` | Whether to prevent the user from closing a dialog by clicking on the backdrop or pressing escape. Optional. |
-| `width: string = ''` | Width of the dialog. Takes any valid CSS value. Optional. |
-| `height: string = ''` | Height of the dialog. Takes any valid CSS value. Optional. |
-| `position: { top?: string, bottom?: string, left?: string, right?: string }` | Position of the dialog that overrides the default centering in it's axis. Optional. |
-| `viewContainerRef: ViewContainerRef` | The view container ref to attach the dialog to. Optional. |
+| `role?: DialogRole = 'dialog'` | The ARIA role of the dialog element. Possible values are `dialog` and `alertdialog`. |
+| `disableClose?: boolean = false` | Whether to prevent the user from closing a dialog by clicking on the backdrop or pressing escape. |
+| `data?: { [key: string]: any }` | Data that will be injected into the dialog as `MdDialogData`. |
+| `width?: string = ''` | Width of the dialog. Takes any valid CSS value. |
+| `height?: string = ''` | Height of the dialog. Takes any valid CSS value. |
+| `position?: { top?: string, bottom?: string, left?: string, right?: string }` | Position of the dialog that overrides the default centering in it's axis. |
+| `viewContainerRef?: ViewContainerRef` | The view container ref to attach the dialog to. |
 
 ## MdDialogRef
 
@@ -58,7 +59,10 @@ export class PizzaComponent {
 
   openDialog() {
     this.dialogRef = this.dialog.open(PizzaDialog, {
-      disableClose: false
+      disableClose: false,
+      data: {
+        pizzaType: 'pepperoni'
+      }
     });
 
     this.dialogRef.afterClosed().subscribe(result => {
@@ -71,7 +75,7 @@ export class PizzaComponent {
 @Component({
   selector: 'pizza-dialog',
   template: `
-  <h1 md-dialog-title>Would you like to order pizza?</h1>
+  <h1 md-dialog-title>Would you like to order a {{ data.pizzaType }} pizza?</h1>
 
   <md-dialog-actions>
     <button (click)="dialogRef.close('yes')">Yes</button>
@@ -80,7 +84,9 @@ export class PizzaComponent {
   `
 })
 export class PizzaDialog {
-  constructor(public dialogRef: MdDialogRef<PizzaDialog>) { }
+  constructor(
+    public dialogRef: MdDialogRef<PizzaDialog>,
+    public data: MdDialogData) { }
 }
 ```
 

src/lib/dialog/dialog-config.ts

@@ -11,6 +11,10 @@ export interface DialogPosition {
   right?: string;
 };
 
+/** Data to be injected into a dialog. */
+export class MdDialogData {
+  [key: string]: any;
+}
 
 /**
  * Configuration for opening a modal dialog with the MdDialog service.
@@ -33,5 +37,8 @@ export class MdDialogConfig {
   /** Position overrides. */
   position?: DialogPosition;
 
+  /** Data being injected into the child component. */
+  data?: MdDialogData;
+
   // TODO(jelbourn): add configuration for lifecycle hooks, ARIA labelling.
 }

src/lib/dialog/dialog-injector.ts

@@ -1,16 +1,24 @@
 import {Injector} from '@angular/core';
 import {MdDialogRef} from './dialog-ref';
+import {MdDialogData} from './dialog-config';
 
 
 /** Custom injector type specifically for instantiating components with a dialog. */
 export class DialogInjector implements Injector {
-  constructor(private _dialogRef: MdDialogRef<any>, private _parentInjector: Injector) { }
+  constructor(
+    private _dialogRef: MdDialogRef<any>,
+    private _data: MdDialogData,
+    private _parentInjector: Injector) { }
 
   get(token: any, notFoundValue?: any): any {
     if (token === MdDialogRef) {
       return this._dialogRef;
     }
 
+    if (token === MdDialogData && this._data) {
+      return this._data;
+    }
+
     return this._parentInjector.get(token, notFoundValue);
   }
 }

src/lib/dialog/dialog.spec.ts

@@ -14,6 +14,7 @@ import {MdDialog} from './dialog';
 import {OverlayContainer} from '../core';
 import {MdDialogRef} from './dialog-ref';
 import {MdDialogContainer} from './dialog-container';
+import {MdDialogData} from './dialog-config';
 
 
 describe('MdDialog', () => {
@@ -227,6 +228,28 @@ describe('MdDialog', () => {
     expect(overlayContainerElement.querySelectorAll('md-dialog-container').length).toBe(0);
   });
 
+  describe('passing in data', () => {
+    it('should be able to pass in data', () => {
+      let config = {
+        data: {
+          stringParam: 'hello',
+          dateParam: new Date()
+        }
+      };
+
+      let instance = dialog.open(DialogWithInjectedData, config).componentInstance;
+
+      expect(instance.data['stringParam']).toBe(config.data.stringParam);
+      expect(instance.data['dateParam']).toBe(config.data.dateParam);
+    });
+
+    it('should throw if injected data is expected but none is passed', () => {
+      expect(() => {
+        dialog.open(DialogWithInjectedData);
+      }).toThrow();
+    });
+  });
+
   describe('disableClose option', () => {
     it('should prevent closing via clicks on the backdrop', () => {
       dialog.open(PizzaMsg, {
@@ -384,19 +407,32 @@ class ContentElementDialog {
   closeButtonAriaLabel: string;
 }
 
+
+/** Simple component for testing ComponentPortal. */
+@Component({template: ''})
+class DialogWithInjectedData {
+  constructor(public data: MdDialogData) { }
+}
+
 // Create a real (non-test) NgModule as a workaround for
 // https://github.com/angular/angular/issues/10760
 const TEST_DIRECTIVES = [
   ComponentWithChildViewContainer,
   PizzaMsg,
   DirectiveWithViewContainer,
-  ContentElementDialog
+  ContentElementDialog,
+  DialogWithInjectedData
 ];
 
 @NgModule({
   imports: [MdDialogModule],
   exports: TEST_DIRECTIVES,
   declarations: TEST_DIRECTIVES,
-  entryComponents: [ComponentWithChildViewContainer, PizzaMsg, ContentElementDialog],
+  entryComponents: [
+    ComponentWithChildViewContainer,
+    PizzaMsg,
+    ContentElementDialog,
+    DialogWithInjectedData
+  ],
 })
 class DialogTestModule { }

src/lib/dialog/dialog.ts

@@ -97,8 +97,9 @@ export class MdDialog {
     // Create a reference to the dialog we're creating in order to give the user a handle
     // to modify and close it.
     let dialogRef = <MdDialogRef<T>> new MdDialogRef(overlayRef);
+    let config: MdDialogConfig = dialogContainer.dialogConfig;
 
-    if (!dialogContainer.dialogConfig.disableClose) {
+    if (!config.disableClose) {
       // When the dialog backdrop is clicked, we want to close it.
       overlayRef.backdropClick().first().subscribe(() => dialogRef.close());
     }
@@ -109,7 +110,7 @@ export class MdDialog {
     // We create an injector specifically for the component we're instantiating so that it can
     // inject the MdDialogRef. This allows a component loaded inside of a dialog to close itself
     // and, optionally, to return a value.
-    let dialogInjector = new DialogInjector(dialogRef, this._injector);
+    let dialogInjector = new DialogInjector(dialogRef, config.data, this._injector);
 
     let contentPortal = new ComponentPortal(component, null, dialogInjector);