Für Callbacks können Scopes angegeben werden. print() benötigt nur noch eine Callback-Funktion.

src/ios/APPPrinter.m

@@ -13,7 +13,7 @@
 @interface APPPrinter (Private)
 
 // Bereitet den Drucker-Kontroller vor
-- (UIPrintInteractionController *) prepareController:(NSString*)content;
+- (UIPrintInteractionController *) prepareController:(NSString *)content;
 // Überprüft, ob der Drucker-Dienst verfügbar ist
 - (BOOL) isPrintServiceAvailable;
 
@@ -26,9 +26,9 @@
  * Is printing available.
  * Callback returns true/false if printing is available/unavailable.
  */
-- (void) isServiceAvailable:(CDVInvokedUrlCommand*)command
+- (void) isServiceAvailable:(CDVInvokedUrlCommand *)command
 {
-    CDVPluginResult *pluginResult = nil;
+    CDVPluginResult* pluginResult = nil;
 
     pluginResult = [CDVPluginResult resultWithStatus:CDVCommandStatus_OK
                                     messageAsBool:[self isPrintServiceAvailable]];
@@ -40,14 +40,14 @@
  * Öffnet den Drucker-Kontroller zur Auswahl des Druckers.
  * Callback gibt Meta-Informationen an.
  */
-- (void) print:(CDVInvokedUrlCommand*)command
+- (void) print:(CDVInvokedUrlCommand *)command
 {
-    NSArray         *arguments    = [command arguments];
+    NSArray*         arguments    = [command arguments];
-    CDVPluginResult *pluginResult = nil;
+    CDVPluginResult* pluginResult = nil;
 
     if (![self isPrintServiceAvailable])
     {
-        pluginResult = [CDVPluginResult resultWithStatus:CDVCommandStatus_ERROR
+        pluginResult = [CDVPluginResult resultWithStatus:CDVCommandStatus_OK
                                         messageAsString:@"{success: false, available: false}"];
 
         [self.commandDelegate sendPluginResult:pluginResult callbackId:command.callbackId];
@@ -57,7 +57,7 @@
 
     if ([arguments count] == 0)
     {
-        pluginResult = [CDVPluginResult resultWithStatus:CDVCommandStatus_ERROR
+        pluginResult = [CDVPluginResult resultWithStatus:CDVCommandStatus_OK
                                         messageAsString:@"{success: false, available: true}"];
 
         [self.commandDelegate sendPluginResult:pluginResult callbackId:command.callbackId];
@@ -76,7 +76,7 @@
         {
             NSString *result = [NSString stringWithFormat:@"{success: false, available: true, error: \"%@\"}", error.localizedDescription];
 
-            pluginResult = [CDVPluginResult resultWithStatus:CDVCommandStatus_ERROR
+            pluginResult = [CDVPluginResult resultWithStatus:CDVCommandStatus_OK
                                             messageAsString:result];
 
         }
@@ -132,7 +132,7 @@
 
     if (printController)
     {
-        UIPrintInteractionController *controller = [UIPrintInteractionController sharedPrintController];
+        UIPrintInteractionController* controller = [UIPrintInteractionController sharedPrintController];
 
         return (controller != nil) && [UIPrintInteractionController isPrintingAvailable];
     }

www/printer.js

@@ -16,31 +16,44 @@ Printer.prototype = {
      * Überprüft, ob der Drucker-Dienst verfügbar ist.
      *
      * @param {Function} callback
+     * @param {Object?}  scope    callback scope (default: window)
+     *
      * @return {Boolean}
      */
-    isServiceAvailable: function (callback) {
+    isServiceAvailable: function (callback, scope) {
-        cordova.exec(callback, null, 'Printer', 'isServiceAvailable', []);
+        var callbackFn = function () {
+            callback.apply(scope || window, arguments);
+        };
+
+        cordova.exec(callbackFn, null, 'Printer', 'isServiceAvailable', []);
     },
 
     /**
      * Übergibt den HTML-Content an den Drucker-Dienst.
      *
-     * @param {String} content html string or DOM node (if latter, innerHTML is used to get the contents)
+     * @param {String}    content  HTML string or DOM node (if latter, innerHTML is used to get the contents)
-     * @param {Function?} success callback function called if print successful. {success: true}
+     * @param {Function?} callback callback function called if print is completed. {success: bool, available: bool, error: reason}
-     * @param {Function?} failure callback function called if print unsuccessful. If print fails, {error: reason}. If printing not available: {available: false}
+     * @param {Object?}   scope    callback scope (default: window)
      */
-    print: function (content, success, failure) {
+    print: function (content, callback, scope) {
-        content = content.innerHTML || content;
+        var page = content.innerHTML || content,
+            callbackFn;
 
-        if (typeof content != 'string') {
+        if (typeof page != 'string') {
             console.log('Print function requires an HTML string. Not an object');
             return;
         }
 
-        cordova.exec(success, failure, 'Printer', 'print', [content]);
+        if (typeof callback == 'function'){
+            callbackFn = function () {
+                callback.apply(scope || window, arguments);
+            }
+        }
+
+        cordova.exec(callbackFn, null, 'Printer', 'print', [page]);
     }
 };
 
-var printer = new Printer();
+var plugin = new Printer();
 
-module.exports = printer;
+module.exports = plugin;