fix(angular): Config provider

angular/src/module.ts

@@ -1,4 +1,4 @@
-import { ModuleWithProviders, NgModule } from '@angular/core';
+import { InjectionToken, ModuleWithProviders, NgModule } from '@angular/core';
 import { CommonModule } from '@angular/common';
 
 import * as c from './directives';
@@ -119,7 +119,7 @@ const PROVIDERS = [
   p.NavController,
   p.Platform,
   p.Events,
-  p.DomController
+  p.DomController,
 ];
 
 @NgModule({
@@ -135,12 +135,22 @@ const PROVIDERS = [
   ]
 })
 export class IonicModule {
-  static forRoot(): ModuleWithProviders {
+  static forRoot(config?: {[key: string]: any}): ModuleWithProviders {
     return {
       ngModule: IonicModule,
       providers: [
+        // Load config with defualt values
+        { provide: ConfigToken, useValue: config },
+        { provide: p.Config, useFactory: setupConfig, deps: [ ConfigToken ] },
+
         ...PROVIDERS,
       ]
     };
   }
 }
+
+export const ConfigToken = new InjectionToken<any>('USERCONFIG');
+export function setupConfig(userConfig: any): p.Config {
+  const config = new p.Config(userConfig);
+  return config;
+}

angular/src/providers/config.ts

@@ -0,0 +1,40 @@
+import { Config as CoreConfig } from '@ionic/core';
+
+export class Config {
+
+  constructor(defaultConfig: {[key: string]: any}) {
+    const Ionic = (window as any).Ionic;
+    if (Ionic.config && Ionic.config.constructor.name !== 'Object') {
+      console.error('ionic config was already initialized');
+      return;
+    }
+    Ionic.config = {
+      ...Ionic.config,
+      ...defaultConfig
+    };
+  }
+
+  get(key: string, fallback?: any): any {
+    return getConfig().get(key, fallback);
+  }
+
+  getBoolean(key: string, fallback?: boolean): boolean {
+    return getConfig().getBoolean(key, fallback);
+  }
+
+  getNumber(key: string, fallback?: number): number {
+    return getConfig().getNumber(key, fallback);
+  }
+
+  set(key: string, value?: any) {
+    getConfig().set(key, value);
+  }
+}
+
+function getConfig(): CoreConfig {
+  const Ionic = (window as any).Ionic;
+  if (Ionic && Ionic.config) {
+    return Ionic.config;
+  }
+  return null;
+}

angular/src/providers/index.ts

@@ -12,3 +12,4 @@ export { PopoverController } from './popover-controller';
 export { ToastController } from './toast-controller';
 export { NavController } from './nav-controller';
 export { DomController } from './dom-controller';
+export { Config } from './config';

angular/src/providers/platform.ts

@@ -1,7 +1,8 @@
 
 import { PlatformConfig } from '@ionic/core';
-import { HostListener } from '@angular/core';
+import { Injectable } from '@angular/core';
 
+@Injectable()
 export class Platform {
 
   private _platforms: PlatformConfig[] = [];