From 1fdb2e99d2d341bef80ac430aaaba6eb10ff10c9 Mon Sep 17 00:00:00 2001
From: atanasovg <georgi.atanassoff@yahoo.com>
Date: Fri, 6 Jun 2014 18:46:02 +0300
Subject: [PATCH] Handled text change notifications for iOS label.

---
 ui/core/observable.ts |  4 ++++
 ui/label/label.ios.ts | 24 ++++++++++--------------
 2 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/ui/core/observable.ts b/ui/core/observable.ts
index 485d60579..2418f9c64 100644
--- a/ui/core/observable.ts
+++ b/ui/core/observable.ts
@@ -22,6 +22,10 @@ export class Observable {
     // true to track the Changing phase, false otherwise
     private _trackChanging = false;
 
+    constructor(body?: any) {
+        // TODO: Not implemented
+    }
+
     public addObserver(eventName: string, callback: (data: ChangeData) => void) {
         this.verifyCallback(callback);
         var list = this.getEventList(eventName, true);
diff --git a/ui/label/label.ios.ts b/ui/label/label.ios.ts
index a9e998eb2..8b242082d 100644
--- a/ui/label/label.ios.ts
+++ b/ui/label/label.ios.ts
@@ -12,16 +12,16 @@ export class Label extends view.View {
 
         this._ios = new UIKit.UILabel();
 
-        //var extendsBody = Foundation.NSObject.extends(
-        //    {
-        //        onTextChanged: function (path, sender, change, context) {
-        //        }
-        //    },
-        //    {
-        //        exposedMethods: { "tick:": "v@:@" }
-        //    });
+        var that = this;
+        var extendsBody = Foundation.NSObject.extends(
+            {
+                observeValueForKeyPathOfObjectChangeContext: function (path: string, sender: Foundation.NSObject, change: Foundation.NSDictionary, context) {
+                    that.updateTwoWayBinding(Label.textProperty, change.objectForKey("new"));
+                }
+            }, {});
 
-        //this.changedHandler = new extendsBody();
+        this.changedHandler = new extendsBody();
+        this._ios.addObserverForKeyPathOptionsContext(this.changedHandler, "text", Foundation.NSKeyValueObservingOptions.NSKeyValueObservingOptionNew, null);
     }
 
     get ios(): UIKit.UILabel {
@@ -39,12 +39,8 @@ export class Label extends view.View {
         // TODO: Will this be a gigantic if-else switch?
         if (data.propertyName === Label.textProperty) {
             this._ios.text = data.value;
+            this._ios.sizeToFit();
         } else if (true) {
         }
     }
-
-    public addToParent(parent: UIKit.UIView) {
-        super.addToParent(parent);
-        this._ios.sizeToFit();
-    }
 } 
\ No newline at end of file