Add TabView.iosIconRenderingMode property

Resolves #2689

apps/app/ui-tests-app/tab-view/main-page.ts

@@ -18,6 +18,7 @@ export function pageLoaded(args: EventData) {
     examples.set("tabStyle", "tab-view/all");
     examples.set("tabmore", "tab-view/tab-view-more");
     examples.set("tabViewCss", "tab-view/tab-view-css");
+    examples.set("tab-view-icons", "tab-view/tab-view-icon");
 
     let viewModel = new SubMainPageViewModel(wrapLayout, examples);
     page.bindingContext = viewModel;

apps/app/ui-tests-app/tab-view/tab-view-icon.ts

@@ -0,0 +1,14 @@
+import { EventData } from "data/observable";
+import { Button } from "ui/button";
+import { TabView } from "ui/tab-view";
+
+let iconModes = ["automatic", "alwaysOriginal", "alwaysTemplate", undefined];
+
+export function onChangeRenderingMode(args: EventData){
+    let button = (<Button>args.object);
+    let tabView = button.page.getViewById<TabView>("tab-view");
+    tabView.iosIconRenderingMode = iconModes[(iconModes.indexOf(tabView.iosIconRenderingMode) + 1) % iconModes.length];
+    for(let i = 0, length = tabView.items.length; i < length; i++){
+        (<Button>tabView.items[i].view).text = "" + tabView.iosIconRenderingMode; 
+    }
+}

apps/app/ui-tests-app/tab-view/tab-view-icon.xml

@@ -0,0 +1,26 @@
+<Page xmlns="http://schemas.nativescript.org/tns.xsd">
+    <TabView id="tab-view" tabTextColor="green" selectedTabTextColor="red" tabBackgroundColor="yellow">
+        <TabView.items>
+            <TabViewItem iconSource="res://icon">
+                <TabViewItem.view>
+                    <Button text="undefined" tap="onChangeRenderingMode"/>
+                </TabViewItem.view>
+            </TabViewItem>
+            <TabViewItem iconSource="res://add_to_fav">
+                <TabViewItem.view>
+                    <Button text="undefined" tap="onChangeRenderingMode"/>
+                </TabViewItem.view>
+            </TabViewItem>
+            <TabViewItem iconSource="res://icon" title="NativeScript">
+                <TabViewItem.view>
+                    <Button text="undefined" tap="onChangeRenderingMode"/>
+                </TabViewItem.view>
+            </TabViewItem>
+            <TabViewItem iconSource="res://add_to_fav" title="Favorites">
+                <TabViewItem.view>
+                    <Button text="undefined" tap="onChangeRenderingMode"/>
+                </TabViewItem.view>
+            </TabViewItem>
+        </TabView.items>
+    </TabView>
+</Page>