Refactor isAvailable

src/plugins/emailcomposer.ts

@@ -1,5 +1,7 @@
 import {Plugin, Cordova} from './plugin';
 
+declare var cordova;
+
 /**
  * Email object for Opening Email Composer
  */
@@ -25,6 +27,12 @@ export interface email {
  * import {EmailComposer} from 'ionic-native';
  *
  * 
+ * EmailComposer.isAvailable().then((available) =>{
+ *  if(available) {
+ *    //Now we know we can send
+ *  }
+ * });
+ *
  * let email = {
  *   to: 'max@mustermann.de',
  *   cc: 'erika@mustermann.de',
@@ -53,24 +61,39 @@ export interface email {
 })
 export class EmailComposer {
   
-  @Cordova({
-    successIndex: 1,
-    errorIndex: 3
-  })
-  static isAvailable(app: string, scope: any) : Promise<boolean> {return}
+   /**
+   * Verifies if sending emails is supported on the device.
+   * 
+   * @param app {string?} An optional app id or uri scheme. Defaults to mailto.
+   * @param scope {any?} An optional scope for the promise
+   * @returns {Promise<boolean>} Resolves promise with boolean whether EmailComposer is available
+   */
+  static isAvailable (app? : string, scope? : any) : Promise<boolean> {
+    return new Promise<boolean>((resolve, reject) => {
+      cordova.plugins.email.isAvailable(app, resolve, scope);
+    });
+  }
 
+  /**
+   * Adds a new mail app alias.
+   *
+   * @param alias {string} The alias name
+   * @param packageName {string} The package name
+   */
   @Cordova()
   static addAlias(alias : string, packageName : string): void {}
   
   /**
-   * Opens Email Composer with email contents
+   * Displays the email composer pre-filled with data.
+   * 
    * @param email {email} Email
+   * @param scope {any?} An optional scope for the promise
    * @returns {Promise<any>} Resolves promise when the EmailComposer has been opened
    */
   @Cordova({
     successIndex: 1,
     errorIndex: 3
   })
-  static open(email: email, scope: any) : Promise<any> {return}
+  static open(email : email, scope? : any) : Promise<any> {return}
 
 }