feat(printer): add printer plugin (#225)

* feat(printer): add printer plugin

* Fixed function implementations. Removed unnecessary reference.

src/index.ts

@@ -52,6 +52,7 @@ import {LaunchNavigator} from './plugins/launchnavigator';
 import {LocalNotifications} from './plugins/localnotifications';
 import {MediaPlugin} from './plugins/media';
 import {Network, Connection} from './plugins/network';
+import {Printer} from './plugins/printer';
 import {Push} from './plugins/push';
 import {SafariViewController} from './plugins/safari-view-controller';
 import {Screenshot} from './plugins/screenshot';
@@ -85,6 +86,7 @@ export * from './plugins/inappbrowser';
 export * from './plugins/launchnavigator';
 export * from './plugins/localnotifications';
 export * from './plugins/media';
+export * from './plugins/printer';
 export * from './plugins/push';
 export * from './plugins/safari-view-controller';
 export * from './plugins/sms';
@@ -183,6 +185,7 @@ window['IonicNative'] = {
   LocalNotifications: LocalNotifications,
   MediaPlugin: MediaPlugin,
   Network: Network,
+  Printer: Printer,
   Push: Push,
   SafariViewController: SafariViewController,
   Screenshot: Screenshot,

src/plugins/printer.ts

@@ -0,0 +1,64 @@
+import {Plugin, Cordova} from './plugin';
+declare var cordova: any;
+
+export interface PrintOptions {
+    /**
+     * The name of the print job and the document
+     */
+    name?: string;
+
+    /**
+     * The network URL of the printer. 
+     * Only supported on iOS.
+     */
+    printerId?: string;
+
+    /**
+     * Specifies the duplex mode to use for the print job.
+     * Either double-sided (duplex:true) or single-sided (duplex:false).
+     * Double-sided by default.
+     * Only supported on iOS
+     */
+    duplex?: boolean;
+
+    /**
+     * The orientation of the printed content, portrait or landscape
+     * Portrait by default.
+     */
+    landscape?: boolean;
+
+    /**
+     * If your application only prints black text, setting this property to true can result in better performance in many cases.
+     * False by default.
+     */
+    grayscale?: boolean;
+
+    /**
+     * The Size and position of the print view
+     */
+    bounds?: number[] | any;
+}
+
+
+@Plugin({
+    plugin: 'de.appplant.cordova.plugin.printer',
+    pluginRef: 'cordova.plugins.printer',
+    repo: 'https://github.com/katzer/cordova-plugin-printer.git',
+    platforms: ['Android', 'iOS']
+})
+export class Printer {
+
+    /**
+     * Checks whether to device is capable of printing.
+     */
+    @Cordova()
+    static isAvailable(): Promise<boolean> { return; }
+
+    /**
+     * Sends content to the printer.
+     * @param {content} The content to print. Can be a URL or an HTML string. If a HTML DOM Object is provided, its innerHtml property value will be used.
+     * @param {options} The options to pass to the printer
+     */
+    @Cordova()
+    static print(content: string | HTMLElement, options?: PrintOptions): Promise<any> { return; }
+}