confirm implemented for ios

ui/dialogs/dialogs.d.ts

@@ -13,10 +13,16 @@
     function alert(options: AlertOptions): promises.Promise<any>;
 
     /**
-    * The confirm() method displays a dialog box with a specified message, along with an OK and a Cancel button.
+    * The confirm() method displays a dialog box with a specified message.
     * @param message Specifies the text to display in the confirm box.
     */
-    function confirm(message: string): void;
+    function confirm(message: string): promises.Promise<boolean>;
+
+    /**
+    * The confirm() method displays a dialog box with a specified message.
+    * @param options Specifies the options for the confirm box.
+    */
+    function confirm(options: ConfirmOptions): promises.Promise<boolean>;
 
     /**
     * The prompt() method displays a dialog box that prompts the visitor for input.
@@ -35,13 +41,38 @@
         message: string;
 
         /**
-          * Gets or sets the alert message.
+          * Gets or sets the alert title.
           */
         title?: string;
 
         /**
-          * Gets or sets the request headers in JSON format.
+          * Gets or sets the button name.
           */
-        buttonName?: any;
+        buttonName?: string;
+    }
+
+    /**
+    * Provides options for the alert.
+    */
+    interface ConfirmOptions {
+        /**
+          * Gets or sets the alert message.
+          */
+        message: string;
+
+        /**
+          * Gets or sets the alert title.
+          */
+        title?: string;
+
+        /**
+          * Gets or sets the OK button name.
+          */
+        okButtonName?: string;
+
+        /**
+          * Gets or sets the Cancel button name.
+          */
+        cancelButtonName?: string;
     }
 }

ui/dialogs/dialogs.ios.ts

@@ -3,27 +3,41 @@
   */
 import promises = require("promises");
 
+function createUIAlertView(options) {
+    var alert = new UIKit.UIAlertView();
+    alert.title = options.title;
+    alert.message = options.message;
+    return alert;
+}
+
+function createDelegate(callback) {
+    var delegateType = Foundation.NSObject.extends({}, {}).implements({
+        protocol: "UIAlertViewDelegate",
+        implementation: {
+            alertViewClickedButtonAtIndex: function (view, index) {
+                callback(view, index);
+            }
+        }
+    });
+    return new delegateType;
+}
+
 export function alert(arg: any): promises.Promise<any> {
     var d = promises.defer<any>();
     try {
         var options = typeof arg === "string" ? { message: arg, title: "Alert", buttonName: "OK" } : arg
-        var alert = new UIKit.UIAlertView();
-        alert.title = options.title;
-        alert.message = options.message;
+
+        var alert = createUIAlertView(options);
+
         alert.addButtonWithTitle(options.buttonName);
 
-        var delegateType = Foundation.NSObject.extends({}, {}).implements({
-            protocol: "UIAlertViewDelegate",
-            implementation: {
-                alertViewClickedButtonAtIndex: function (view, index) {
-                    d.resolve();
-                    // Remove the local variable for the delegate.
-                    delegate = undefined;
-                }
-            }
-        });
         // Assign first to local variable, otherwise it will be garbage collected since delegate is weak reference.
-        var delegate = new delegateType();
+        var delegate = createDelegate(function (view, index) {
+            d.resolve();
+            // Remove the local variable for the delegate.
+            delegate = undefined;
+        });
+
         alert.delegate = delegate;
 
         alert.show();
@@ -34,8 +48,32 @@ export function alert(arg: any): promises.Promise<any> {
     return d.promise();
 }
 
-export function confirm(message: string): void {
+export function confirm(arg: any): promises.Promise<boolean> {
+    var d = promises.defer<boolean>();
+    try {
+        var options = typeof arg === "string" ? { message: arg, title: "Alert", okButtonName: "OK", cancelButtonName: "Cancel" } : arg
 
+        var alert = createUIAlertView(options);
+
+        alert.addButtonWithTitle(options.okButtonName);
+        alert.addButtonWithTitle(options.cancelButtonName);
+
+        // Assign first to local variable, otherwise it will be garbage collected since delegate is weak reference.
+        var delegate = createDelegate(function (view, index) {
+            d.resolve(index === 0);
+            // Remove the local variable for the delegate.
+            delegate = undefined;
+        });
+
+        alert.delegate = delegate;
+
+        alert.show();
+
+    } catch (ex) {
+        d.reject(ex);
+    }
+
+    return d.promise();
 }
 
 export function prompt(text: string, defaultText?: string): void {