Ipdate single item in tab view

CrossPlatformModules.csproj

@@ -159,6 +159,7 @@
     <TypeScriptCompile Include="apps\tests\pages\page19.ts">
       <DependentUpon>page19.xml</DependentUpon>
     </TypeScriptCompile>
+    <TypeScriptCompile Include="apps\tests\pages\tab-view.ts" />
     <TypeScriptCompile Include="apps\tests\ui\animation\animation-tests.ts" />
     <TypeScriptCompile Include="apps\tests\ui\search-bar\search-bar-tests-native.android.ts" />
     <TypeScriptCompile Include="apps\tests\ui\search-bar\search-bar-tests-native.d.ts" />
@@ -175,6 +176,7 @@
     <Content Include="apps\tests\pages\page19.xml">
       <SubType>Designer</SubType>
     </Content>
+    <Content Include="apps\tests\pages\tab-view.xml" />
     <Content Include="apps\ui-tests-app\app.css" />
     <TypeScriptCompile Include="apps\ui-tests-app\pages\handlers.ts" />
     <TypeScriptCompile Include="apps\ui-tests-app\pages\htmlview.ts" />

apps/tests/pages/tab-view.ts

@@ -0,0 +1,23 @@
+var observableModule = require("data/observable");
+var vm = new observableModule.Observable();
+function onPageLoaded(args) {
+    var page = args.object;
+    vm.set("firstTitle", "fiiiirst");
+    vm.set("secondTitle", "secondTitle");
+    vm.set("secondIcon", "res://icon");
+    page.bindingContext = vm;
+}
+exports.onPageLoaded = onPageLoaded;
+var i = 0;
+function onTap() {
+    i++;
+    vm.set("firstTitle", "changed " + i);
+    if (i == 3) {
+        vm.set("firstIcon", "res://ic_action");
+    }
+    if (i == 4) {
+        vm.set("firstIcon", "");
+    }
+}
+exports.onTap = onTap;
+//# sourceMappingURL=tab-view.js.map

apps/tests/pages/tab-view.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<Page loaded="onPageLoaded">
+  <TabView>
+    <TabView.items>
+      <TabViewItem title="{{ firstTitle }}" iconSource="{{ firstIcon }}">
+        <TabViewItem.view>
+          <GridLayout>
+            <Button tap="onTap" text="click" />
+          </GridLayout>
+        </TabViewItem.view>
+      </TabViewItem>
+      <TabViewItem title="{{ secondTitle }}" iconSource="{{ secondIcon }}">
+        <TabViewItem.view>
+          <GridLayout>
+            <Label text="Second Tab" verticalAlignment="center" horizontalAlignment="center"/>
+          </GridLayout>
+        </TabViewItem.view>
+      </TabViewItem>
+    </TabView.items>
+  </TabView>
+</Page>

org.nativescript.widgets.d.ts

@@ -151,6 +151,7 @@
                 setSelectedIndicatorColors(color: Array<number>): void;
 
                 setItems(items: Array<TabItemSpec>, viewPager: android.support.v4.view.ViewPager): void;
+                updateItemAt(position: number, itemSpec: TabItemSpec): void;
             }
 
             export class TabItemSpec {

ui/tab-view/tab-view.android.ts

@@ -12,20 +12,14 @@ var ACCENT_COLOR = "colorAccent";
 var PRIMARY_COLOR = "colorPrimary";
 var DEFAULT_ELEVATION = 4;
 
-//var RESOURCE_PREFIX = "res://";
-
 global.moduleMerge(common, exports);
 
 export class TabViewItem extends common.TabViewItem {
-    public _tab: android.app.ActionBar.Tab;
     public _parent: TabView;
 
     public _update() {
-        if (this._parent && this._tab) {
-            var androidApp = app.android;
-            var resources = androidApp.context.getResources();
-            this._tab.setText(this.title);
-            this._parent._setIcon(this.iconSource, this._tab, resources, androidApp.packageName);
+        if (this._parent) {
+            this._parent._updateTabForItem(this);
         }
     }
 }
@@ -209,19 +203,23 @@ export class TabView extends common.TabView {
         trace.write("TabView._onItemsPropertyChangedSetNativeValue(" + data.oldValue + " ---> " + data.newValue + ");", common.traceCategory);
 
         if (data.oldValue) {
+            var oldItems: Array<TabViewItem> = data.newValue;
+            oldItems.forEach((oldItem) => { oldItem._parent = null; });
+
             this._viewPager.setAdapter(null);
             this._pagerAdapter = null;
             this._tabLayout.setItems(null, null);
         }
 
         if (data.newValue) {
-            var items: Array<definition.TabViewItem> = data.newValue;
+            var items: Array<TabViewItem> = data.newValue;
             var tabItems = new Array<org.nativescript.widgets.TabItemSpec>();
             items.forEach((item, idx, arr) => {
                 if (types.isNullOrUndefined(item.view)) {
                     throw new Error("View of TabViewItem at index " + idx + " is " + item.view);
                 }
 
+                item._parent = this;
                 tabItems.push(this.createTabItem(item));
             });
 
@@ -234,6 +232,15 @@ export class TabView extends common.TabView {
         this._updateSelectedIndexOnItemsPropertyChanged(data.newValue);
     }
 
+    public _updateTabForItem(item: TabViewItem) {
+        if (this.items && this.items.length > 0) {
+            var index = this.items.indexOf(item);
+            if (index >= 0) {
+                this._tabLayout.updateItemAt(index, this.createTabItem(item));
+            }
+        }
+    }
+
     public _onSelectedIndexPropertyChangedSetNativeValue(data: dependencyObservable.PropertyChangeData) {
         trace.write("TabView._onSelectedIndexPropertyChangedSetNativeValue(" + data.oldValue + " ---> " + data.newValue + ");", common.traceCategory);
         super._onSelectedIndexPropertyChangedSetNativeValue(data);
@@ -269,6 +276,7 @@ export class TabView extends common.TabView {
             }
         }
 
+        console.log("createTabItem: " + result.title + " result.iconId: " + result.iconId + " result.iconDrawable: " + result.iconDrawable);
         return result;
     }
 }