Application orientation changed event

CrossPlatformModules.csproj

@@ -79,6 +79,7 @@
     <TypeScriptCompile Include="apps\action-bar-demo\pages\data-binding.ts">
       <DependentUpon>data-binding.xml</DependentUpon>
     </TypeScriptCompile>
+    <TypeScriptCompile Include="apps\orientation-demo\app.ts" />
     <TypeScriptCompile Include="apps\notifications-demo\app.ts" />
     <TypeScriptCompile Include="apps\notifications-demo\main-page.ts">
       <DependentUpon>main-page.xml</DependentUpon>
@@ -107,6 +108,9 @@
     <Content Include="apps\action-bar-demo\pages\center-view.xml" />
     <Content Include="apps\action-bar-demo\pages\data-binding.xml" />
     <Content Include="apps\gallery-app\content\html-view.xml" />
+    <Content Include="apps\orientation-demo\main-page.port.xml">
+      <SubType>Designer</SubType>
+    </Content>
     <Content Include="apps\notifications-demo\main-page.xml">
       <SubType>Designer</SubType>
     </Content>
@@ -135,6 +139,7 @@
       <DependentUpon>page-title-icon.xml</DependentUpon>
     </TypeScriptCompile>
     <TypeScriptCompile Include="apps\animations\model.ts" />
+    <TypeScriptCompile Include="apps\orientation-demo\main-page.ts" />
     <TypeScriptCompile Include="apps\tests\ui\animation\animation-tests.ts" />
     <TypeScriptCompile Include="ui\animation\animation.d.ts" />
     <TypeScriptCompile Include="ui\animation\animation-common.ts">
@@ -1777,6 +1782,9 @@
     <Content Include="apps\notifications-demo\package.json">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </Content>
+    <Content Include="apps\orientation-demo\package.json">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </Content>
     <None Include="js-libs\esprima\LICENSE.BSD" />
     <Content Include="source-control.md" />
     <Content Include="ui\segmented-bar\package.json">

application/application-common.ts

@@ -14,6 +14,7 @@ export var resumeEvent = "resume";
 export var exitEvent = "exit";
 export var lowMemoryEvent = "lowMemory";
 export var uncaughtErrorEvent = "uncaughtError";
+export var orientationChangedEvent = "orientationChanged";
 
 export var cssFile: string = "app.css"
 

application/application.android.ts

@@ -3,6 +3,7 @@ import dts = require("application");
 import frame = require("ui/frame");
 import types = require("utils/types");
 import observable = require("data/observable");
+import enums = require("ui/enums");
 
 global.moduleMerge(appModule, exports);
 
@@ -206,6 +207,8 @@ export class AndroidApplication extends observable.Observable implements dts.And
 
             exports.notify({ eventName: dts.launchEvent, object: this, android: intent });
 
+            setupOrientationListener(this);
+
             /* In the onLaunch event we expect the following setup, which ensures a root frame:
             * var frame = require("ui/frame");
             * var rootFrame = new frame.Frame();
@@ -315,3 +318,36 @@ exports.start = function () {
 }
 
 exports.android = new AndroidApplication();
+
+var currentOrientation: number;
+function setupOrientationListener(androidApp: AndroidApplication) {
+    androidApp.registerBroadcastReceiver(android.content.Intent.ACTION_CONFIGURATION_CHANGED, onConfigurationChanged);
+    currentOrientation = androidApp.context.getResources().getConfiguration().orientation
+}
+function onConfigurationChanged(context: android.content.Context, intent: android.content.Intent) {
+    var orientation = context.getResources().getConfiguration().orientation;
+
+    if (currentOrientation !== orientation) {
+        currentOrientation = orientation;
+
+        var newValue;
+        switch (orientation) {
+            case android.content.res.Configuration.ORIENTATION_LANDSCAPE:
+                newValue = enums.DeviceOrientation.landscape;
+                break;
+            case android.content.res.Configuration.ORIENTATION_PORTRAIT:
+                newValue = enums.DeviceOrientation.portrait;
+                break;
+            default:
+                newValue = enums.DeviceOrientation.unknown;
+                break;
+        }
+
+        exports.notify(<dts.OrientationChangedEventData> {
+            eventName: dts.orientationChangedEvent,
+            android: context,
+            newValue: newValue,
+            object: exports.android,
+        });
+    }
+}

application/application.d.ts

@@ -45,6 +45,11 @@ declare module "application" {
      */
     export var lowMemoryEvent: string;
 
+    /**
+     * String value used when hooking to orientationChanged event.
+     */
+    export var orientationChangedEvent: string;
+
     /**
      * Event data containing information for the application events.
      */
@@ -70,6 +75,16 @@ declare module "application" {
         object: any;
     }
 
+    /**
+     * Event data containing information for orientation changed event.
+     */
+    export interface OrientationChangedEventData extends ApplicationEventData {
+        /**
+         * New orientation value.
+         */
+        newValue: string;
+    }
+
     /**
      * The main page path (without the file extension) for the application starting from the application root. 
      * For example if you have page called "main.js" in a folder called "subFolder" and your root folder is "app" you can specify mainModule like this:
@@ -146,6 +161,14 @@ declare module "application" {
      */
     export function on(eventNames: string, callback: (data: any) => void, thisArg?: any);
 
+    /**
+     * Shortcut alias to the removeEventListener method.
+     * @param eventNames - String corresponding to events (e.g. "onLaunch").
+     * @param callback - Callback function which will be removed.
+     * @param thisArg - An optional parameter which will be used as `this` context for callback execution.
+     */
+    export function off(eventNames: string, callback ?: any, thisArg ?: any);
+
     /**
      * Notifies all the registered listeners for the event provided in the data.eventName.
      * @param data The data associated with the event.
@@ -188,6 +211,11 @@ declare module "application" {
      */
     export function on(event: "uncaughtError", callback: (args: ApplicationEventData) => void, thisArg?: any);
 
+    /**
+     * This event is raised the orientation of the current device has changed.
+     */
+    export function on(event: "orientationChanged", callback: (args: OrientationChangedEventData) => void, thisArg?: any);
+
     /**
      * This is the Android-specific application object instance.
      * Encapsulates methods and properties specific to the Android platform.

application/application.ios.ts

@@ -4,7 +4,7 @@ import utils = require("utils/utils");
 import types = require("utils/types");
 import view = require("ui/core/view");
 import definition = require("application");
-
+import enums = require("ui/enums");
 global.moduleMerge(appModule, exports);
 
 export var mainModule: string;
@@ -61,10 +61,11 @@ class TNSAppDelegate extends UIResponder implements UIApplicationDelegate {
                 return;
             }
         }
+        var app: IOSApplication = exports.ios;
+        setupOrientationListener(app);
 
         this.window.content = topFrame;
         this.window.rootViewController = topFrame.ios.controller;
-        var app: IOSApplication = exports.ios;
         app.rootController = this.window.rootViewController;
         this.window.makeKeyAndVisible();
         return true;
@@ -193,4 +194,40 @@ exports.start = function () {
 
         definition.notify({ eventName: definition.uncaughtErrorEvent, object: <any>definition.ios, ios: error });
     }
-}
+}
+
+var currentOrientation: number;
+function setupOrientationListener(iosApp: IOSApplication) {
+    iosApp.addNotificationObserver(UIDeviceOrientationDidChangeNotification, onOreintationDidChange)
+    currentOrientation = UIDevice.currentDevice().orientation;
+}
+
+function onOreintationDidChange(notification: NSNotification) {
+    var orientation = UIDevice.currentDevice().orientation;
+
+    if (currentOrientation !== orientation) {
+        currentOrientation = orientation;
+
+        var newValue;
+        switch (orientation) {
+            case UIDeviceOrientation.UIDeviceOrientationLandscapeRight:
+            case UIDeviceOrientation.UIDeviceOrientationLandscapeLeft:
+                newValue = enums.DeviceOrientation.landscape;
+                break;
+            case UIDeviceOrientation.UIDeviceOrientationPortrait:
+            case UIDeviceOrientation.UIDeviceOrientationPortraitUpsideDown:
+                newValue = enums.DeviceOrientation.portrait;
+                break;
+            default:
+                newValue = enums.DeviceOrientation.unknown;
+                break;
+        }
+
+        exports.notify(<definition.OrientationChangedEventData>{
+            eventName: definition.orientationChangedEvent,
+            ios: exports.ios,
+            newValue: newValue,
+            object: exports.ios,
+        });
+    }
+}

apps/notifications-demo/main-page.ts

@@ -5,6 +5,7 @@ import labelModule = require("ui/label");
 
 var batteryLabel: labelModule.Label;
 var registered = false;
+
 export function onPageLoaded(args: observable.EventData) {
     var page = <pages.Page>args.object;
     batteryLabel = page.getViewById<labelModule.Label>("batteryLabel");
@@ -36,4 +37,4 @@ export function onPageLoaded(args: observable.EventData) {
         application.ios.addNotificationObserver(UIDeviceBatteryLevelDidChangeNotification, onReceiveCallback);
     }
     registered = true;
-}
+}

apps/notifications-demo/main-page.xml

@@ -1,4 +1,4 @@
-<Page xmlns="http://www.nativescript.org/tns.xsd" loaded="onPageLoaded">
+<Page xmlns="http://www.nativescript.org/tns.xsd" loaded="onPageLoaded" unloaded="onPageUnloaded">
   <StackLayout>
     <Label id="batteryLabel" text="Battery" style.fontSize="30" horizontalAlignment="stretch" textAlignment="center"/>
   </StackLayout>

apps/orientation-demo/app.ts

@@ -0,0 +1,14 @@
+import application = require("application");
+
+application.mainModule = "main-page";
+
+application.on(application.exitEvent, () => {
+    if (application.android) {
+        application.android.unregisterBroadcastReceiver(android.content.Intent.ACTION_BATTERY_CHANGED);
+    }
+    else {
+        application.ios.removeNotificationObserver(UIDeviceBatteryLevelDidChangeNotification);
+    }
+});
+
+application.start();

apps/orientation-demo/main-page.port.xml

@@ -0,0 +1,5 @@
+<Page xmlns="http://www.nativescript.org/tns.xsd" loaded="onPageLoaded" unloaded="onPageUnloaded" navigatedTo="pageNavigatedTo">
+  <GridLayout>
+    <TextView text="{{ oreintation }}" />
+  </GridLayout>
+</Page>

apps/orientation-demo/main-page.ts

@@ -0,0 +1,21 @@
+import application = require("application");
+import observable = require("data/observable");
+import pageModule = require("ui/page");
+
+var vm = new observable.Observable();
+function orientationChanged(data) {
+    console.log("Orientation changed: " + data.newValue);
+    vm.set("oreintation", data.newValue);
+}
+export function onPageLoaded(args: observable.EventData) {
+    var page = <pageModule.Page>args.object;
+    application.on(application.orientationChangedEvent, orientationChanged, page);
+
+    page.bindingContext = vm;
+    vm.set("oreintation", "not changed");
+}
+
+export function onPageUnloaded(args: observable.EventData) {
+    var page = <pageModule.Page>args.object;
+    <any>application.off(application.orientationChangedEvent, orientationChanged, page);
+}

apps/orientation-demo/package.json

@@ -0,0 +1,2 @@
+{ "name" : "page-reload-demo",
+  "main" : "app.js" }

file-system/file-name-resolver.d.ts

@@ -14,7 +14,10 @@ declare module "file-system/file-name-resolver" {
         resolveFileName(path: string, ext: string): string;
     }
 
+    export function resolveFileName(path: string, ext: string): string;
+
     //@private
     export function findFileMatch(path: string, ext: string, candidates: Array<string>, context: PlatformContext): string
     //@endprivate
+
 }

file-system/file-name-resolver.ts

@@ -2,6 +2,8 @@
 import fs = require("file-system");
 import types = require("utils/types");
 import trace = require("trace");
+import platform = require("platform");
+import application = require("application");
 
 var MIN_WH: string = "minWH";
 var MIN_W: string = "minW";
@@ -79,7 +81,7 @@ var paltformQualifier: QualifierSpec = {
             value === "ios";
 
     },
-    getMatchValue(value: string, context: definition.PlatformContext): number{
+    getMatchValue(value: string, context: definition.PlatformContext): number {
         return value === context.os.toLowerCase() ? 1 : -1;
     }
 }
@@ -90,7 +92,7 @@ var orientationQualifier: QualifierSpec = {
             value === "port";
 
     },
-    getMatchValue(value: string, context: definition.PlatformContext): number{
+    getMatchValue(value: string, context: definition.PlatformContext): number {
         var isLandscape: number = (context.width > context.height) ? 1 : -1;
         return (value === "land") ? isLandscape : -isLandscape;
     }
@@ -213,3 +215,27 @@ function checkQualifier(value: string, context: definition.PlatformContext) {
 
     return -1;
 }
+
+var appEventAttached: boolean = false;
+var resolverInstance: FileNameResolver;
+
+export function resolveFileName(path: string, ext: string): string {
+    if (!appEventAttached) {
+        application.on(application.orientationChangedEvent, (data) => {
+            resolverInstance = undefined;
+        });
+        appEventAttached = true;
+    }
+
+    if (!resolverInstance) {
+        resolverInstance = new FileNameResolver({
+            width: platform.screen.mainScreen.widthDIPs,
+            height: platform.screen.mainScreen.heightDIPs,
+            os: platform.device.os,
+            deviceType: platform.device.deviceType
+        });
+    }
+
+    return resolverInstance.resolveFileName(path, ext);
+}
+

platform/platform.android.ts

@@ -92,22 +92,39 @@ export class device implements definition.device {
     }
 }
 
-var mainScreenInfo: definition.ScreenMetrics;
+var mainScreen: MainScreen;
 
-// This is a "static" class and it is used like a name-space.
+// This is a "static" class and it is used like a namespace.
 // It is not meant to be initialized - thus it is not capitalized
 export class screen implements definition.screen {
     static get mainScreen(): definition.ScreenMetrics {
-        if (!mainScreenInfo) {
+        if (!mainScreen) {
             var metrics = utils.ad.getApplicationContext().getResources().getDisplayMetrics();
-            mainScreenInfo = {
-                widthPixels: metrics.widthPixels,
-                heightPixels: metrics.heightPixels,
-                scale: metrics.density,
-                widthDIPs: metrics.widthPixels / metrics.density,
-                heightDIPs: metrics.heightPixels / metrics.density
-            }
+            mainScreen = new MainScreen(metrics);
         }
-        return mainScreenInfo;
+        return mainScreen;
     }
 }
+
+class MainScreen implements definition.ScreenMetrics {
+    private _metrics: android.util.DisplayMetrics;
+    constructor(metrics: android.util.DisplayMetrics) {
+        this._metrics = metrics;
+    }
+
+    get widthPixels(): number {
+        return this._metrics.widthPixels;
+    }
+    get heightPixels(): number {
+        return this._metrics.heightPixels;
+    }
+    get scale(): number {
+        return this._metrics.density;
+    }
+    get widthDIPs(): number {
+        return this._metrics.widthPixels / this._metrics.density;
+    }
+    get heightDIPs(): number {
+        return this._metrics.heightPixels / this._metrics.density;
+    }
+}

platform/platform.ios.ts

@@ -86,26 +86,38 @@ export class device implements definition.device {
     }
 }
 
-var mainScreenInfo: definition.ScreenMetrics = null;
+var mainScreen: MainScreen;
 
 // This is a "static" class and it is used like a name-space.
 // It is not meant to be initialized - thus it is not capitalized
 export class screen implements definition.screen {
     static get mainScreen(): definition.ScreenMetrics {
-        if (!mainScreenInfo) {
-            var mainScreen = UIScreen.mainScreen();
-            if (mainScreen) {
-                var size = mainScreen.bounds.size;
-                var scale = mainScreen.scale;
-                mainScreenInfo = {
-                    widthPixels: size.width * scale,
-                    heightPixels: size.height * scale,
-                    scale: scale,
-                    widthDIPs: size.width,
-                    heightDIPs: size.height
-                }
-            }
+        if (!mainScreen) {
+            mainScreen = new MainScreen(UIScreen.mainScreen());
         }
-        return mainScreenInfo;
+        return mainScreen;
     }
 }
+
+class MainScreen implements definition.ScreenMetrics {
+    private _screen: UIScreen;
+    constructor(metrics: UIScreen) {
+        this._screen = metrics;
+    }
+
+    get widthPixels(): number {
+        return this.widthDIPs * this.scale;
+    }
+    get heightPixels(): number {
+        return this.heightDIPs * this.scale;
+    }
+    get scale(): number {
+        return this._screen.scale;
+    }
+    get widthDIPs(): number {
+        return this._screen.bounds.size.width;
+    }
+    get heightDIPs(): number {
+        return this._screen.bounds.size.height;
+    }
+}

ui/builder/builder.ts

@@ -193,11 +193,11 @@ function loadCustomComponent(componentPath: string, componentName?: string, attr
         fullComponentPathFilePathWithoutExt = fs.path.join(fs.knownFolders.currentApp().path, componentPath, componentName);
     }
 
-    var xmlFilePath = resolveFilePath(fullComponentPathFilePathWithoutExt, "xml");
+    var xmlFilePath = fileResolverModule.resolveFileName(fullComponentPathFilePathWithoutExt, "xml");
 
     if (xmlFilePath) {
         // Custom components with XML
-        var jsFilePath = resolveFilePath(fullComponentPathFilePathWithoutExt, "js");
+        var jsFilePath = fileResolverModule.resolveFileName(fullComponentPathFilePathWithoutExt, "js");
 
         var subExports;
         if (jsFilePath) {
@@ -220,7 +220,7 @@ function loadCustomComponent(componentPath: string, componentName?: string, attr
     }
 
     // Add component CSS file if exists.
-    var cssFilePath = resolveFilePath(fullComponentPathFilePathWithoutExt, "css");
+    var cssFilePath = fileResolverModule.resolveFileName(fullComponentPathFilePathWithoutExt, "css");
     if (cssFilePath) {
         if (parentPage) {
             parentPage.addCssFile(cssFilePath);
@@ -232,19 +232,6 @@ function loadCustomComponent(componentPath: string, componentName?: string, attr
     return result;
 }
 
-var fileNameResolver: fileResolverModule.FileNameResolver;
-function resolveFilePath(path, ext): string {
-    if (!fileNameResolver) {
-        fileNameResolver = new fileResolverModule.FileNameResolver({
-            width: platform.screen.mainScreen.widthDIPs,
-            height: platform.screen.mainScreen.heightDIPs,
-            os: platform.device.os,
-            deviceType: platform.device.deviceType
-        });
-    }
-    return fileNameResolver.resolveFileName(path, ext);
-}
-
 export function load(pathOrOptions: string | definition.LoadOptions, context?: any): view.View {
     var viewToReturn: view.View;
     var componentModule: componentBuilder.ComponentModule;

ui/enums/enums.d.ts

@@ -104,6 +104,24 @@
         export var vertical: string;
     }
 
+    /**
+     * Orientation of a device.
+     */
+    module DeviceOrientation {
+        /**
+         * Portrait orientation.
+         */
+        export var portrait: string;
+        /**
+         * Landscape orientation.
+         */
+        export var landscape: string;
+        /**
+         * Orientation cannot be determined.
+         */
+        export var unknown: string;
+    }
+
     /**
      * HorizontalAlignment indicates where an element should be displayed on the horizontal axis relative to the allocated layout slot of the parent element.
      */

ui/enums/enums.ts

@@ -25,6 +25,12 @@ export module Orientation {
     export var vertical = "vertical";
 }
 
+export module DeviceOrientation {
+    export var portrait = "portrait";
+    export var landscape = "landscape";
+    export var unknown = "unknown";
+}
+
 export module HorizontalAlignment {
     export var left = "left";
     export var center = "center";

ui/frame/frame-common.ts

@@ -6,7 +6,6 @@ import trace = require("trace");
 import builder = require("ui/builder");
 import fs = require("file-system");
 import utils = require("utils/utils");
-import platform = require("platform");
 import fileResolverModule = require("file-system/file-name-resolver");
 
 var frameStack: Array<Frame> = [];
@@ -47,7 +46,7 @@ export function resolvePageFromEntry(entry: definition.NavigationEntry): pages.P
         var moduleNamePath = fs.path.join(currentAppPath, entry.moduleName);
 
         var moduleExports;
-        var moduleExportsResolvedPath = resolveFilePath(moduleNamePath, "js");
+        var moduleExportsResolvedPath = fileResolverModule.resolveFileName(moduleNamePath, "js");
         if (moduleExportsResolvedPath) {
             trace.write("Loading JS file: " + moduleExportsResolvedPath, trace.categories.Navigation);
             
@@ -72,25 +71,12 @@ export function resolvePageFromEntry(entry: definition.NavigationEntry): pages.P
     return page;
 }
 
-var fileNameResolver: fileResolverModule.FileNameResolver;
-function resolveFilePath(path, ext) : string {
-    if (!fileNameResolver) {
-        fileNameResolver = new fileResolverModule.FileNameResolver({
-            width: platform.screen.mainScreen.widthDIPs,
-            height: platform.screen.mainScreen.heightDIPs,
-            os: platform.device.os,
-            deviceType: platform.device.deviceType
-        });
-    }
-    return fileNameResolver.resolveFileName(path, ext);
-}
-
 function pageFromBuilder(moduleNamePath: string, moduleExports: any): pages.Page {
     var page: pages.Page;
     var element: view.View;
 
     // Possible XML file path.
-    var fileName = resolveFilePath(moduleNamePath, "xml");
+    var fileName = fileResolverModule.resolveFileName(moduleNamePath, "xml");
     if (fileName) {
         trace.write("Loading XML file: " + fileName, trace.categories.Navigation);
 
@@ -100,7 +86,7 @@ function pageFromBuilder(moduleNamePath: string, moduleExports: any): pages.Page
             page = <pages.Page>element;
 
             // Possible CSS file path.
-            var cssFileName = resolveFilePath(moduleNamePath, "css");
+            var cssFileName = fileResolverModule.resolveFileName(moduleNamePath, "css");
             if (cssFileName) {
                 page.addCssFile(cssFileName);
             }