Develop Reference

WPF - Pass data between Viewmodels

I have a view model and field and I want to send field another view model. I cant use object initialize because the constructor executions first and this field is null. I need this field in the constructor. I tried constructor parameter but that didn't work I get a error;
'ProductDetailViewModel' must be a non-abstract type with a public parameterless constructor in order to use it as parameter 'TVm' in the generic type or method 'BasePage<TVm>'
P.S: sorry for my English :|
My Base Page:
/// <summary>
/// The base page for all pages to gain base functionality
/// </summary>
public class BasePage : UserControl
{
#region Private Member
/// <summary>
/// The View Model associated with this page
/// </summary>
private object mViewModel;
#endregion
#region Public Properties
/// <summary>
/// The animation the play when the page is first loaded
/// </summary>
public PageAnimation PageLoadAnimation { get; set; } = PageAnimation.SlideAndFadeInFromRight;
/// <summary>
/// The animation the play when the page is unloaded
/// </summary>
public PageAnimation PageUnloadAnimation { get; set; } = PageAnimation.SlideAndFadeOutToLeft;
/// <summary>
/// The time any slide animation takes to complete
/// </summary>
public float SlideSeconds { get; set; } = 0.4f;
/// <summary>
/// A flag to indicate if this page should animate out on load.
/// Useful for when we are moving the page to another frame
/// </summary>
public bool ShouldAnimateOut { get; set; }
/// <summary>
/// The View Model associated with this page
/// </summary>
public object ViewModelObject
{
get => mViewModel;
set
{
// If nothing has changed, return
if (mViewModel == value)
return;
// Update the value
mViewModel = value;
// Fire the view model changed method
OnViewModelChanged();
// Set the data context for this page
DataContext = mViewModel;
}
}
#endregion
#region Constructor
/// <summary>
/// Default constructor
/// </summary>
public BasePage()
{
// Don't bother animating in design time
if (DesignerProperties.GetIsInDesignMode(this))
return;
// If we are animating in, hide to begin with
if (PageLoadAnimation != PageAnimation.None)
Visibility = Visibility.Collapsed;
// Listen out for the page loading
Loaded += BasePage_LoadedAsync;
}
#endregion
#region Animation Load / Unload
/// <summary>
/// Once the page is loaded, perform any required animation
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private async void BasePage_LoadedAsync(object sender, System.Windows.RoutedEventArgs e)
{
// If we are setup to animate out on load
if (ShouldAnimateOut)
// Animate out the page
await AnimateOutAsync();
// Otherwise...
else
// Animate the page in
await AnimateInAsync();
}
/// <summary>
/// Animates the page in
/// </summary>
/// <returns></returns>
public async Task AnimateInAsync()
{
// Make sure we have something to do
if (PageLoadAnimation == PageAnimation.None)
return;
switch (PageLoadAnimation)
{
case PageAnimation.SlideAndFadeInFromRight:
// Start the animation
await this.SlideAndFadeInAsync(AnimationSlideInDirection.Right, false, SlideSeconds,
size: (int)Application.Current.MainWindow.Width);
break;
}
}
/// <summary>
/// Animates the page out
/// </summary>
/// <returns></returns>
public async Task AnimateOutAsync()
{
// Make sure we have something to do
if (PageUnloadAnimation == PageAnimation.None)
return;
switch (PageUnloadAnimation)
{
case PageAnimation.SlideAndFadeOutToLeft:
// Start the animation
await this.SlideAndFadeOutAsync(AnimationSlideInDirection.Left, SlideSeconds);
break;
}
}
#endregion
/// <summary>
/// Fired when the view model changes
/// </summary>
protected virtual void OnViewModelChanged()
{
}
}
/// <summary>
/// A base page with added ViewModel support
/// </summary>
public class BasePage<TVm> : BasePage
where TVm : BaseViewModel, new()
{
#region Public Properties
/// <summary>
/// The view model associated with this page
/// </summary>
public TVm ViewModel
{
get => (TVm)ViewModelObject;
set => ViewModelObject = value;
}
#endregion
#region Constructor
/// <summary>
/// Default constructor
/// </summary>
public BasePage() : base()
{
// If in design time mode...
if (DesignerProperties.GetIsInDesignMode(this))
// Just use a new instance of the VM
ViewModel = new TVm();
else
// Create a default view model
ViewModel = Framework.Service<TVm>() ?? new TVm();
}
/// <summary>
/// Constructor with specific view model
/// </summary>
/// <param name="specificViewModel">The specific view model to use, if any</param>
public BasePage(TVm specificViewModel = null) : base()
{
// Set specific view model
if (specificViewModel != null)
ViewModel = specificViewModel;
else
{
// If in design time mode...
if (DesignerProperties.GetIsInDesignMode(this))
// Just use a new instance of the VM
ViewModel = new TVm();
else
{
// Create a default view model
ViewModel = Framework.Service<TVm>() ?? new TVm();
}
}
}
#endregion
}
My Base View Model:
/// <summary>
/// A base view model that fires Property Changed events as needed
/// </summary>
public class BaseViewModel : INotifyPropertyChanged
{
#region Protected Members
/// <summary>
/// A global lock for property checks so prevent locking on different instances of expressions.
/// Considering how fast this check will always be it isn't an issue to globally lock all callers.
/// </summary>
protected object mPropertyValueCheckLock = new object();
#endregion
/// <summary>
/// The event that is fired when any child property changes its value
/// </summary>
public event PropertyChangedEventHandler PropertyChanged = (sender, e) => { };
/// <summary>
/// Call this to fire a <see cref="PropertyChanged"/> event
/// </summary>
/// <param name="name"></param>
public void OnPropertyChanged(string name)
{
PropertyChanged(this, new PropertyChangedEventArgs(name));
}
#region Command Helpers
/// <summary>
/// Runs a command if the updating flag is not set.
/// If the flag is true (indicating the function is already running) then the action is not run.
/// If the flag is false (indicating no running function) then the action is run.
/// Once the action is finished if it was run, then the flag is reset to false
/// </summary>
/// <param name="updatingFlag">The boolean property flag defining if the command is already running</param>
/// <param name="action">The action to run if the command is not already running</param>
/// <returns></returns>
protected async Task RunCommandAsync(Expression<Func<bool>> updatingFlag, Func<Task> action)
{
// Lock to ensure single access to check
lock (mPropertyValueCheckLock)
{
// Check if the flag property is true (meaning the function is already running)
if (updatingFlag.GetPropertyValue())
return;
// Set the property flag to true to indicate we are running
updatingFlag.SetPropertyValue(true);
}
try
{
// Run the passed in action
await action();
}
finally
{
// Set the property flag back to false now it's finished
updatingFlag.SetPropertyValue(false);
}
}
/// <summary>
/// Runs a command if the updating flag is not set.
/// If the flag is true (indicating the function is already running) then the action is not run.
/// If the flag is false (indicating no running function) then the action is run.
/// Once the action is finished if it was run, then the flag is reset to false
/// </summary>
/// <param name="updatingFlag">The boolean property flag defining if the command is already running</param>
/// <param name="action">The action to run if the command is not already running</param>
/// <typeparam name="T">The type the action returns</typeparam>
/// <returns></returns>
protected async Task<T> RunCommandAsync<T>(Expression<Func<bool>> updatingFlag, Func<Task<T>> action, T defaultValue = default(T))
{
// Lock to ensure single access to check
lock (mPropertyValueCheckLock)
{
// Check if the flag property is true (meaning the function is already running)
if (updatingFlag.GetPropertyValue())
return defaultValue;
// Set the property flag to true to indicate we are running
updatingFlag.SetPropertyValue(true);
}
try
{
// Run the passed in action
return await action();
}
finally
{
// Set the property flag back to false now it's finished
updatingFlag.SetPropertyValue(false);
}
}
#endregion
}
View Model Constructor:
View Model

Unity: Singleton DontDestroyOnLoad Build Error

I am using XMGUnityLib Plugin. The program runs fine in the editor without any error but when I try to build it (Android) then while at pushing apk step it gives this error:
InvalidOperationException: The following game object is invoking the DontDestroyOnLoad method: AnalyticsManager. Notice that DontDestroyOnLoad can only be used in play mode and, as such, cannot be part of an editor script.
XMGSingleton`1[XMGAnalyticsManager].get_Instance () (at Assets/XMG/UnityLib/Util/XMGSingleton.cs:28)
AndroidStorePostProcess.OnPostprocessScene () (at Assets/Editor/AndroidStorePostProcess.cs:32)
UnityEditor.HostView:OnGUI()
XMGSingleton.cs:
using UnityEngine;
using System.Collections;
using System;
/// <summary>
/// XMG singleton base Class.
/// Inherit your Manager Monobehavior classes that you want to be Singletons
/// </summary>
public abstract class XMGSingleton<T> : MonoBehaviour where T : MonoBehaviour
{
protected static T instance;
/// <summary>
/// Returns the instance of this singleton
/// Make sure we don't get destroyed on Scene Load
/// </summary>
public static T Instance {
get {
if(instance == null) {
instance = (T) FindObjectOfType(typeof(T));
if (instance == null) {
Debug.LogError("An instance of " + typeof(T) +
" is needed in the scene, but there is none.");
return null;
}
DontDestroyOnLoad(instance.gameObject);
}
return instance;
}
}
#region Public Methods
public static bool HasInstance {
get {
if( (T) FindObjectOfType(typeof(T)) != null ) {
return true;
} else {
return false;
}
}
}
/// <summary>
/// Helper to cast the Instance to the Type provided
/// </summary>
public static Type MyInstance<Type> () {
return (Type)(object)Instance;
}
#endregion
}
XMGAnalyticsManager.cs:
using UnityEngine;
using System;
using System.Collections;
using System.Collections.Generic;
using Com.XMG.UnityLib.Community.OnlineGame;
using Com.XMG.UnityLib.Tracking;
#if UNITY_IPHONE
using FlurryAccess = FlurryBinding;
#elif UNITY_ANDROID
using FlurryAccess = FlurryAndroid;
#endif
public abstract partial class XMGAnalyticsManager : XMGSingleton<XMGAnalyticsManager> {
#region Private Fields
/// <summary>
/// The type of the current build.
/// For Analytics QA testing point to Analytics
/// For QA Testing point to SandBox
/// For Production/Release build point to Production
/// </summary>
[SerializeField]
private BuildTypeEnum buildType = BuildTypeEnum.SandBox;
/// <summary>
/// The type of the android store type
/// </summary>
[SerializeField]
private AndroidStoreTypeEnum androidStoreType = AndroidStoreTypeEnum.Google;
/// <summary>
/// The swrve authentication Info
/// </summary>
[SerializeField]
private SwrveAuthentication swrveAuth;
/// <summary>
/// The flurry auth.
/// </summary>
[SerializeField]
private FlurryAuthentication flurryAuth;
/// <summary>
/// Sends events every X seconds.
/// </summary>
[SerializeField]
private float sendEventsEverySeconds = 30;
/// <summary>
/// The parent screen.
/// </summary>
[SerializeField]
private string parentScreen = "SplashPage";
/// <summary>
/// The grand parent screen.
/// </summary>
string grandParentScreen = "null";
/// <summary>
/// My external IP.
/// </summary>
string myExtIP = "";
/// <summary>
/// The swrve component.
/// </summary>
private SwrveComponent swrveComponent;
private Dictionary<string, JSONObject> swrveResources = new Dictionary<string, JSONObject>();
/// <summary>
/// Resource hashmap ----> (key: resource name, value: json object)
/// </summary>
public Dictionary<string, JSONObject> Resources {
get {
return this.swrveResources;
}
}
/// <summary>
/// This event is triggered when swrve data is updated.
/// </summary>
public static event Action ItemsConfigurationUpdatedEvent = delegate {};
/// <summary>
/// True if we are in the fetching of AB Test Data State
/// </summary>
private bool isFetchingABParams = false;
/// <summary>
/// The current swrve identifier.
/// </summary>
private string currentSwrveId = null;
/// <summary>
/// The android bundle version.
/// </summary>
[SerializeField]
protected string androidBundleVersion = "1.0";
#endregion
#region Public Properties
/// <summary>
/// True if it's a production build
/// </summary>
public bool IsProductionBuild {
get { return buildType == BuildTypeEnum.Production; }
}
/// <summary>
/// Gets the type of the android store.
/// </summary>
public AndroidStoreTypeEnum AndroidStoreType {
get { return androidStoreType; }
set { androidStoreType = value; }
}
/// <summary>
/// True if its a google play store build
/// </summary>
public bool IsGoogleStoreType {
get { return androidStoreType == AndroidStoreTypeEnum.Google; }
}
/// <summary>
/// True if its an Amazon store build
/// </summary>
public bool IsAmazonStoreType {
get { return androidStoreType == AndroidStoreTypeEnum.Amazon; }
}
#endregion
#region Monobehaviors & Init
/// <summary>
/// Add event Listeners
/// </summary>
void Awake() {
XMGOnlineProfileManager.OnProfileLoadedEvent += ProfileHasLoadedCallback;
XMGCommunityManager.OnCreateRealProfileOnServerEvent += ProfileCreatedOnServerCallback;
XMGCommunityManager.OnNewFriendsAddedEvent += NewFriendsAddedCallback;
RegisterGameListeners();
// TODO: Listen for Profile Change events
swrveAuth.Init();
flurryAuth.Init();
}
/// <summary>
/// Starts the SWRVE Event timer
/// </summary>
void Start() {
StartSwrveTimer();
StartCoroutine( CheckIP() );
}
/// <summary>
/// Checks for the IP
/// </summary>
/// <returns>
/// The IP
/// </returns>
IEnumerator CheckIP(){
WWW myExtIPWWW = new WWW("http://checkip.dyndns.org");
if( myExtIPWWW != null ) {
yield return myExtIPWWW;
if( myExtIPWWW.error == null ) {
myExtIP=myExtIPWWW.text;
myExtIP=myExtIP.Substring(myExtIP.IndexOf(":")+1);
myExtIP=myExtIP.Substring(0,myExtIP.IndexOf("<"));
}
}
}
/// <summary>
/// Detach event Listeners
/// </summary>
void OnDestroy() {
XMGOnlineProfileManager.OnProfileLoadedEvent -= ProfileHasLoadedCallback;
XMGCommunityManager.OnCreateRealProfileOnServerEvent -= ProfileCreatedOnServerCallback;
XMGCommunityManager.OnNewFriendsAddedEvent -= NewFriendsAddedCallback;
UnRegisterGameListeners();
}
/// <summary>
/// If Pause end session
/// If Resume Start session and Re-Login.
/// At any case post events
/// </summary>
/// <param name='pause'>
/// Pause.
/// </param>
void OnApplicationPause(bool pause) {
if (currentSwrveId != null) {
if(pause) {
swrveComponent.Swrve_AddSessionEnd();
} else {
swrveComponent.Swrve_AddSessionStart();
SessionStart();
AnalyticsLogout();
AnalyticsLogin();
}
LogUserProperties();
swrveComponent.Swrve_PostEvents(currentSwrveId, SWRVE_APP_VERSION);
}
}
/// <summary>
/// Init plugins.The Profile Has loaded
/// </summary>
void ProfileHasLoadedCallback() {
// Get Swrve component
swrveComponent = gameObject.GetComponentInChildren<SwrveComponent>();
AnalyticsLogin();
// Check if we've set the random user property, if not then set it
if (!PlayerPrefs.HasKey(RANDOM_TEST_PROPERTY_KEY)) {
PlayerPrefs.SetString(RANDOM_TEST_PROPERTY_KEY, "true");
JSONObject userProperty = new JSONObject(JSONObject.Type.OBJECT);
int random = NGUITools.RandomRange(1, 100);
userProperty.AddField("RandNum", random.ToString());
swrveComponent.Swrve_AddUserUpdateEvent(userProperty.ToString());
}
}
/// <summary>
/// A new Online Profile created callback.
/// </summary>
void ProfileCreatedOnServerCallback() {
AddNamedEvent( "Community.FacebookUserCreated" );
}
/// <summary>
/// New friends were added callback.
/// </summary>
/// <param name='newFriendsAdded'>
/// The New friends added
/// </param>
void NewFriendsAddedCallback( int newFriendsAdded ) {
JSONObject jTournamentFriends = new JSONObject(JSONObject.Type.OBJECT);
jTournamentFriends.AddField( "NewFriendsAdded", BucketGeneral( newFriendsAdded ) );
AddNamedEvent ( "Community.TournamentAddedFriend", jTournamentFriends );
}
#endregion
#region Abstract & Virtual Methods
/// <summary>
/// Gets the tracking Object
/// </summary>
protected abstract XMGTracking GetTracking();
/// <summary>
/// Registers the game listeners.
/// </summary>
protected abstract void RegisterGameListeners();
/// <summary>
/// Unregister the game listeners.
/// </summary>
protected abstract void UnRegisterGameListeners();
/// <summary>
/// Logs the game user properties.
/// </summary>
/// <param name='jUserProperties'>
/// The JSON Object with the user properties.
/// </param>
protected abstract void LogGameUserProperties(JSONObject jUserProperties);
/// <summary>
/// A session Is Started
/// </summary>
protected abstract void SessionStart();
/// <summary>
/// The session has ended
/// </summary>
protected abstract void SessionEnd();
/// <summary>
/// Gets the user start time.
/// Default to Now
/// Override to provide the user's start time
/// </summary>
/// <returns>
/// The user start time.
/// </returns>
protected virtual long GetUserStartTime() {
return (long)XMGUnityUtil.ToUnixTimeFromUniversal( DateTime.UtcNow );
}
#endregion
#region Private Methods
/// <summary>
/// Starts the swrve timer.
/// </summary>
private void StartSwrveTimer() {
StartCoroutine( StartEventsTimer());
}
/// <summary>
/// Logs the user properties.
/// And Calls abstract LogGameUserProperties
/// </summary>
private void LogUserProperties() {
JSONObject jUserProperties = new JSONObject(JSONObject.Type.OBJECT);
// Add here Common User Properties
XMGTracking tracking = GetTracking();
jUserProperties.AddField( UP_FIRST_LAUNCH_DAY, tracking.FirstLaunch.Day );
jUserProperties.AddField( UP_FIRST_LAUNCH_MONTH, tracking.FirstLaunch.Month );
jUserProperties.AddField( UP_FIRST_LAUNCH_YEAR, tracking.FirstLaunch.Year );
jUserProperties.AddField( UP_FIRST_LAUNCH_EPOCH, XMGUnityUtil.ToUnixTimeFromUniversal( tracking.FirstLaunch ).ToString() );
jUserProperties.AddField( UP_TOTAL_TAPJOY_REWARDS, tracking.TotalTapJoyPointsEarned );
jUserProperties.AddField( UP_TOTAL_SPONSORPAY_REWARDS, tracking.TotalSponsorPayPointsEarned );
jUserProperties.AddField( UP_TOTAL_CHARTBOOST_ADS_CLICKED, tracking.TotalChartBoostAdsClicked );
jUserProperties.AddField( UP_TOTAL_CHARTBOOST_ADS_CLOSED, tracking.TotalChartBoostAdsClosed );
jUserProperties.AddField( UP_TOTAL_SOFT_CURRENCY_EARNED, tracking.SoftCurrencyEarned );
jUserProperties.AddField( UP_TOTAL_HARD_CURRENCY_EARNED, tracking.HardCurrencyEarned );
jUserProperties.AddField( UP_TOTAL_SOFT_CURRENCY_SPENT, tracking.SoftCurrencySpent );
jUserProperties.AddField( UP_TOTAL_HARD_CURRENCY_SPENT, tracking.HardCurrencySpent );
#if UNITY_IPHONE
jUserProperties.AddField( UP_VERION, EtceteraTwoBinding.getInfoPlistValue("CFBundleVersion") );
#elif UNITY_ANDROID
jUserProperties.AddField( UP_VERION, androidBundleVersion );
#endif
jUserProperties.AddField( UP_TOTAL_FRIENDS, tracking.TotalFriends );
jUserProperties.AddField( UP_TOTAL_UNIQUE_DAYS_PLAYED, tracking.TotalUniqueDaysPlayed );
if( string.IsNullOrEmpty( myExtIP ) ) {
jUserProperties.AddField( UP_IP, myExtIP );
}
LogGameUserProperties(jUserProperties);
swrveComponent.Swrve_AddUserUpdateEvent(jUserProperties.ToString());
}
#endregion
#region Authentication
/// <summary>
/// Logs in to Flurry and SWRVE
/// </summary>
void AnalyticsLogin() {
FlurryLogin();
if( currentSwrveId != null ) {
if( !currentSwrveId.Equals( XMGOnlineProfileManager.Instance.ActiveOnlineProfile.GameStats.SwrveId ) ) {
Debug.Log("There is already a swrve account signed in!!! You must close the session first!");
AnalyticsLogout();
} else {
// This swrve user is already logged in, bail out of this function
Debug.Log("Attempt to log into swrve twice with the same id... Ignoring.");
return;
}
}
SwrveLogin(XMGOnlineProfileManager.Instance.ActiveOnlineProfile.GameStats.SwrveId);
}
/// <summary>
/// Logout from Flurry and SWRVE
/// </summary>
private void AnalyticsLogout() {
FlurryLogout();
if(currentSwrveId == null) {
Debug.LogError("There is no active swrve user!!! Cannot close session.");
return;
}
SwrveLogout();
}
/// <summary>
/// Starts Flurry Session
/// </summary>
private void FlurryLogin() {
#if UNITY_IPHONE
FlurryAccess.startSession(flurryAuth.FlurryKey);
#elif UNITY_ANDROID
FlurryAccess.onStartSession(flurryAuth.FlurryKey, true, true );
#endif
}
/// <summary>
/// Logouts from Flurry
/// </summary>
private void FlurryLogout() {
#if UNITY_ANDROID
FlurryAccess.onEndSession();
#endif
}
/// <summary>
/// Login to Swrve
/// </summary>
/// <param name='swrveId'>
/// The Swrve identifier.
/// </param>
private void SwrveLogin(string swrveId) {
currentSwrveId = swrveId;
int gameId = 0;
string apiKey = "";
if (buildType == BuildTypeEnum.Analytics) {
gameId = swrveAuth.AnalyticsGameID;
apiKey = swrveAuth.AnalyticsAPIKey;
} else if (buildType == BuildTypeEnum.SandBox) {
gameId = swrveAuth.SandboxGameID;
apiKey = swrveAuth.SandboxAPIKey;
} else if( buildType == BuildTypeEnum.Production ) {
gameId = swrveAuth.ProductionGameID;
apiKey = swrveAuth.ProductionAPIKey;
}
InitializeSWRVEComponent(gameId,
apiKey,
swrveAuth.PersonalKey,
swrveAuth.URLABTest
);
}
/// <summary>
/// Logout from Swrve
/// </summary>
private void SwrveLogout() {
// Make sure to close the Swrve session
SessionEnd();
swrveComponent.Swrve_AddSessionEnd();
swrveComponent.Swrve_PostEvents(currentSwrveId, SWRVE_APP_VERSION);
currentSwrveId = null;
}
/// <summary>
/// Initializes the SWRVE component.
/// </summary>
/// <param name='gameId'>
/// The Game identifier.
/// </param>
/// <param name='apiKey'>
/// The API key.
/// </param>
/// <param name='personalKey'>
/// Personal key.
/// </param>
/// <param name='abURL'>
/// The Ab Test server URL.
/// </param>
private void InitializeSWRVEComponent(int gameId, string apiKey, string personalKey, string abURL) {
swrveComponent.gameId = gameId;
swrveComponent.apiKey = apiKey;
swrveComponent.abTestServer = abURL;
// Setup swrve for new user
swrveComponent.Swrve_AddSessionStart();
SessionStart();
if(isFetchingABParams == false) {
isFetchingABParams = true;
StartCoroutine(GetAllResourcesWithABTests());
}
}
#endregion
#region A/B Helpers
/// <summary>
/// Returns the most recent JSON configuration for a resource from swrve or NULL if there is none.
/// This means it could return cached data that is old. If you want to retrieve the latest from swrve.
/// </summary>
/// <param name="itemId">
/// A <see cref="System.String"/>
/// </param>
/// <returns>
/// A <see cref="JSONObject"/>
/// </returns>
public JSONObject GetItemParams(string itemId) {
JSONObject item = null;
swrveResources.TryGetValue(itemId, out item);
return item;
}
/// <summary>
/// Gets all resources with AB tests.
/// </summary>
/// <returns>
/// The all resources with AB tests.
/// </returns>
private IEnumerator GetAllResourcesWithABTests() {
string swrveURLRequest = string.Format(swrveAuth.URLABTestResources + "?api_key={0}&user={1}&joined={2}", swrveComponent.apiKey, currentSwrveId, GetUserStartTime() );
WWW itemRequest = new WWW(swrveURLRequest);
yield return itemRequest; // Yield until a result is returned.
if(itemRequest.error != null) {
Debug.LogWarning("Error attempting to fetch Swrve A/B Resource data: " + itemRequest.error);
LoadCachedConfig();
// Bail!
yield break;
}
// Process all the resources into a hashmap ( key: resource name, value: json object )
JSONObject jResources = new JSONObject(itemRequest.text);
if(jResources == null || jResources.type == JSONObject.Type.NULL) {
// Bad data from swrve, abort!
Debug.LogError("Bad A/B resource data from swrve!");
LoadCachedConfig();
yield break;
} else {
//Debug.LogWarning( "Data from SWRVE: " + jResources );
}
XMGSaveLoadUtils.Instance.SaveEncryptedField(CACHED_CONFIG_KEY, itemRequest.text); // Replace the old cached config.
ParseResources(jResources);
if( swrveResources.Count > 0 ) {
ItemsConfigurationUpdatedEvent();
}
isFetchingABParams = false;
}
/// <summary>
/// Loads the cached swrve config file
/// </summary>
private void LoadCachedConfig() {
string cached = XMGSaveLoadUtils.Instance.LoadEncryptedField(CACHED_CONFIG_KEY);
if(string.IsNullOrEmpty(cached)) {
// There was no cached data
return;
}
// Apply the cached resources so it doesn't block updates.
JSONObject jResources = new JSONObject(cached);
ParseResources(jResources);
if( swrveResources.Count > 0 ) {
ItemsConfigurationUpdatedEvent();
}
}
/// <summary>
/// Expects a JSON array of resources.
/// </summary>
/// <param name="resources">
/// A <see cref="JSONObject"/>
/// </param>
private void ParseResources(JSONObject jResources) {
swrveResources.Clear();
//Debug.Log( "Parsing SWRVE Resources: " + jResources );
if(jResources == null || jResources.type != JSONObject.Type.ARRAY) {
// Bad data from swrve, abort!
Debug.LogError("Could not parse resource data, unexpected format!");
return;
}
foreach(JSONObject data in jResources.list) {
JSONObject key = data.GetField("uid");
if(key == null || key.type != JSONObject.Type.STRING || string.IsNullOrEmpty( JSONObject.GetString(key) ) ) {
// Bad item, on to the next
Debug.LogWarning("Bad item, no property 'uid' in " + data.print());
continue;
}
// Add the resource over top of any precached configuration
swrveResources[JSONObject.GetString(key)] = data;
}
}
#endregion
#region Event Handling
/// <summary>
/// Adds the named event.
/// </summary>
/// <param name='name'>
/// The EventName.
/// </param>
public void AddNamedEvent(string name) {
swrveComponent.Swrve_AddNamedEvent(name, "{}");
#if UNITY_IPHONE
FlurryAccess.logEvent(name, false);
#elif UNITY_ANDROID
FlurryAccess.logEvent(name);
#endif
}
/// <summary>
/// Adds a named event with Payload
/// </summary>
/// <param name='name'>
/// The EventName.
/// </param>
/// <param name='payload'>
/// Payload.
/// </param>
public void AddNamedEvent(string name, JSONObject payload) {
string data = payload.ToString();
if(!string.IsNullOrEmpty(data)) {
swrveComponent.Swrve_AddNamedEvent(name, data);
} else {
swrveComponent.Swrve_AddNamedEvent(name, "{}");
}
#if UNITY_IPHONE
FlurryAccess.logEventWithParameters(name, payload.ToDictionary(), false);
#elif UNITY_ANDROID
FlurryAccess.logEvent(name, payload.ToDictionary());
#endif
}
/// <summary>
/// Infinite Loop to send events in the queue
/// </summary>
private IEnumerator StartEventsTimer() {
float timeInterval = Time.realtimeSinceStartup;
while (true) {
if(Time.realtimeSinceStartup - timeInterval >= sendEventsEverySeconds) {
SendEvents();
timeInterval = Time.realtimeSinceStartup;
}
yield return new WaitForSeconds( 1 );
}
}
/// <summary>
/// Sends the events to SWRVE
/// </summary>
private void SendEvents() {
if(currentSwrveId != null) {
swrveComponent.Swrve_PostEvents(currentSwrveId, SWRVE_APP_VERSION);
}
}
#endregion
#region UI Events
/// <summary>
/// Logs a UI screen visit event.
/// Records the current screen, the parent screen, and the grandparent screen.
/// </summary>
/// <param name='screenName'>
/// Screen name.
/// </param>
public void ScreenVisitEvent(string screenName) {
JSONObject eventParams = new JSONObject(JSONObject.Type.OBJECT);
if(parentScreen != null) {
eventParams.AddField("parent", parentScreen);
}
if(grandParentScreen != null) {
eventParams.AddField("grandParent", grandParentScreen);
}
AddNamedEvent("UI.Flow." + screenName, eventParams);
eventParams.AddField("screen", screenName);
AddNamedEvent("UI.Flow.Screens", eventParams);
grandParentScreen = parentScreen;
parentScreen = screenName;
}
/// <summary>
/// Logs a UI button pressed event
/// </summary>
/// <param name='buttonName'>
/// The Button name.
/// </param>
public void ButtonPressedEvent( string buttonName ) {
AddNamedEvent("UI.ButtonPressed." + buttonName );
}
#endregion
#region Purchase Events
/// <summary>
/// Sends an analytics buy in event for purchasing inapps.
/// </summary>
/// <param name='rewardCurrency'>
/// Reward currency
/// </param>
/// <param name='rewardAmount'>
/// Amount of rewardCurrency
/// </param>
/// <param name='localCost'>
/// The real money price in local currency ( e.g 0.99 )
/// </param>
/// <param name='localCurrency'>
/// CAD, USD, etc...
/// </param>
public void AddBuyInEvent(string rewardCurrency, int rewardAmount, float localCost, string localCurrency, string itemID ) {
swrveComponent.Swrve_AddBuyInEvent( "", rewardCurrency, rewardAmount, Mathf.Round(localCost* 100)/100, localCurrency );
AddNamedEvent( "Purhases.IAP" );
AddNamedEvent( "Purhases.IAP.HardCurrency" + itemID );
}
/// <summary>
/// Analytics event when a user purchases an item in-game.
/// </summary>
/// <param name='itemID'>
/// The UID for the Item
/// </param>
/// <param name='currency'>
/// The currency
/// </param>
/// <param name='itemCost'>
/// Item cost.
/// </param>
/// <param name='itemQuantity'>
/// Item quantity.
/// </param>
public void AddPurchaseEvent( string itemID, string currency, int itemCost, int itemQuantity ) {
swrveComponent.Swrve_AddPurchaseItemEvent( itemID, currency, itemCost, itemQuantity );
}
/// <summary>
/// Adds a purchase conversion event.
/// </summary>
/// <param name='itemID'>
///The unique Item ID
/// </param>
public void AddPurchaseConversionPackEvent( string itemID ) {
AddNamedEvent( "Purchases.HardCurrency.SoftCurrency" );
AddNamedEvent( "Purhases.HardCurrency.SoftCurrency." + itemID );
}
#endregion
}
Is this singleton class correctly coded? If yes, what could be the problem?
Any help will be appreciated.
Thanks :)

Do you have an "Editor Script" that inherits from this class? If so then most probably this is what's causing the error. If you're not sure what this means, try looking for a folder in your project named Editor and looking in its scripts. Or try searching for any scripts that are using UnityEditor; and that inherit from Editor like this: public class Name : Editor and make them not inherit from this class.
Another solution is try commenting the DontDestroyOnLoad line (line 26 in XMGSingleton.cs) and put it yourself where you need it.
Go to the objects that you're using this script with and do something like this:
void Awake()
{
if (instance == null)
{
DontDestroyOnLoad(gameObject);
instance = this;
}
else
if (instance != this)
Destroy(gameObject);
}

Though the post is a bit old, I recently bumped into this issue. It was a bit confusing because I had not added any new editor script and other editor scripts were not being called from the Singleton GameObject that the error was pointing to.
When I tried restarting Unity and then again created the build, it started giving some other exception.
However, I finally found the issue was being caused by a method from another object (created by the Singleton's OnAwake method) trying to access an uninitialized property of the Singleton (because the OnAwake method execution was not completed).
I fixed it by delaying the other object's method callback based on a different event.

Changing the property of a xaml button from another xaml

I'm new to Silverlight and MVVM and I'm trying to change Button.IsEnabled of one xaml from another xaml inside the app.
I tried to create a class but I'm not sure I'm using it correctly...
using System.ComponentModel;
namespace Reporting.Models
{
public class DataSourceValidation : INotifyPropertyChanged
{
private bool _isSaveEnabled;
public bool IsSaveEnabled
{
get
{
return _isSaveEnabled;
}
set
{
_isSaveEnabled = value;
RaisedPropertyChanged("IsSaveEnabled");
}
}
public event PropertyChangedEventHandler PropertyChanged;
public void RaisedPropertyChanged(string property)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(property));
}
}
}
}
I'd be very grateful for an explanation and example. I've been looking but its not quite clicking with me on how you bind the control to a model and then change that value from another xaml.cs... Provided I am even thinking about this the correct way.
If I need to provide more information just ask. Thanks for your time.

If you just wan't to get it done quickly (no good solution) then you can make this happen using static properties:
In ExampleA.xaml.cs create the following property:
public static ExampleA CurrentInstance { get; private set; }
and in the constructor of ExampleA (I will assume that the name of the class is ExampleA):
public ExampleA()
{
this.InitializeComponent();
CurrentInstance = this;
}
Then in your ExampleB class LostFocus method:
if (ExampleA.CurrentInstance != null)
{
var button = ExampleA.CurrentInstance.FindName("OKButton") as Button;
if (button != null)
{
button.IsEnabled = true;
}
}
On the other hand, I don't know how your classes are structured and how these XAML files are related, but a good universal solution would be by using the Event Aggregator pattern:
I am using here a slightly modified version of the EventAggregator class from the Caliburn.Micro MVVM framework:
namespace Caliburn.Micro
{
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
/// <summary>
/// A marker interface for classes that subscribe to messages.
/// </summary>
public interface IHandle { }
/// <summary>
/// Denotes a class which can handle a particular type of message.
/// </summary>
/// <typeparam name = "TMessage">The type of message to handle.</typeparam>
public interface IHandle<TMessage> : IHandle
{
/// <summary>
/// Handles the message.
/// </summary>
/// <param name = "message">The message.</param>
void Handle(TMessage message);
}
/// <summary>
/// Enables loosely-coupled publication of and subscription to events.
/// </summary>
public interface IEventAggregator
{
/// <summary>
/// Gets or sets the default publication thread marshaller.
/// </summary>
/// <value>
/// The default publication thread marshaller.
/// </value>
Action<System.Action> PublicationThreadMarshaller { get; set; }
/// <summary>
/// Subscribes an instance to all events declared through implementations of <see cref = "IHandle{T}" />
/// </summary>
/// <param name = "instance">The instance to subscribe for event publication.</param>
void Subscribe(object instance);
/// <summary>
/// Unsubscribes the instance from all events.
/// </summary>
/// <param name = "instance">The instance to unsubscribe.</param>
void Unsubscribe(object instance);
/// <summary>
/// Publishes a message.
/// </summary>
/// <param name = "message">The message instance.</param>
/// <remarks>
/// Uses the default thread marshaller during publication.
/// </remarks>
void Publish(object message);
/// <summary>
/// Publishes a message.
/// </summary>
/// <param name = "message">The message instance.</param>
/// <param name = "marshal">Allows the publisher to provide a custom thread marshaller for the message publication.</param>
void Publish(object message, Action<System.Action> marshal);
}
/// <summary>
/// Enables loosely-coupled publication of and subscription to events.
/// </summary>
public class EventAggregator : IEventAggregator
{
/// <summary>
/// The singleton instance.
/// </summary>
public static EventAggregator Instance = new EventAggregator();
/// <summary>
/// The default thread marshaller used for publication;
/// </summary>
public static Action<System.Action> DefaultPublicationThreadMarshaller = action => action();
readonly List<Handler> handlers = new List<Handler>();
/// <summary>
/// Initializes a new instance of the <see cref = "EventAggregator" /> class.
/// </summary>
public EventAggregator()
{
PublicationThreadMarshaller = DefaultPublicationThreadMarshaller;
}
/// <summary>
/// Gets or sets the default publication thread marshaller.
/// </summary>
/// <value>
/// The default publication thread marshaller.
/// </value>
public Action<System.Action> PublicationThreadMarshaller { get; set; }
/// <summary>
/// Subscribes an instance to all events declared through implementations of <see cref = "IHandle{T}" />
/// </summary>
/// <param name = "instance">The instance to subscribe for event publication.</param>
public virtual void Subscribe(object instance)
{
lock (handlers)
{
if (handlers.Any(x => x.Matches(instance)))
return;
handlers.Add(new Handler(instance));
}
}
/// <summary>
/// Unsubscribes the instance from all events.
/// </summary>
/// <param name = "instance">The instance to unsubscribe.</param>
public virtual void Unsubscribe(object instance)
{
lock (handlers)
{
var found = handlers.FirstOrDefault(x => x.Matches(instance));
if (found != null)
handlers.Remove(found);
}
}
/// <summary>
/// Publishes a message.
/// </summary>
/// <param name = "message">The message instance.</param>
/// <remarks>
/// Does not marshall the the publication to any special thread by default.
/// </remarks>
public virtual void Publish(object message)
{
Publish(message, PublicationThreadMarshaller);
}
/// <summary>
/// Publishes a message.
/// </summary>
/// <param name = "message">The message instance.</param>
/// <param name = "marshal">Allows the publisher to provide a custom thread marshaller for the message publication.</param>
public virtual void Publish(object message, Action<System.Action> marshal)
{
Handler[] toNotify;
lock (handlers)
toNotify = handlers.ToArray();
marshal(() =>
{
var messageType = message.GetType();
var dead = toNotify
.Where(handler => !handler.Handle(messageType, message))
.ToList();
if (dead.Any())
{
lock (handlers)
{
foreach (var handler in dead)
{
handlers.Remove(handler);
}
}
}
});
}
protected class Handler
{
readonly WeakReference reference;
readonly Dictionary<Type, MethodInfo> supportedHandlers = new Dictionary<Type, MethodInfo>();
public Handler(object handler)
{
reference = new WeakReference(handler);
var interfaces = handler.GetType().GetInterfaces()
.Where(x => typeof(IHandle).IsAssignableFrom(x) && x.IsGenericType);
foreach (var #interface in interfaces)
{
var type = #interface.GetGenericArguments()[0];
var method = #interface.GetMethod("Handle");
supportedHandlers[type] = method;
}
}
public bool Matches(object instance)
{
return reference.Target == instance;
}
public bool Handle(Type messageType, object message)
{
var target = reference.Target;
if (target == null)
return false;
foreach (var pair in supportedHandlers)
{
if (pair.Key.IsAssignableFrom(messageType))
{
pair.Value.Invoke(target, new[] { message });
return true;
}
}
return true;
}
}
}
}
Copy this class in your project.
Then create a simple message class which will represent a message to any listener that a button needs to be enabled:
public class EnableButtonMessage
{
}
Your ExampleA class then needs to implement the IHandle<EnableButtonMessage> interface (in the constructor you need to subscribe that this class is receiving some kind of messages, and the Handle method executes when an actual message of a registered type is received in which you then enable the button):
public sealed class ExampleA : UserControl, IHandle<EnableButtonMessage>
{
...
public ExampleA()
{
this.InitializeComponent();
EventAggregator.Instance.Subscribe(this);
}
...
public void Handle(EnableButtonMessage message)
{
this.OKButton.IsEnabled = true;
}
...
}
In ExampleB class' LostFocus method you just simply call to change your button property:
EventAggregator.Instance.Publish(new EnableButtonMessage());
This is a simple implementation of the EventAggregator pattern and you can then use if for any messaging between any entities inside your application globally. This is a powerful pattern and when used alongside MVVM can make your life a lot easier.

Keep selection visual in RichEditBox on unfocus?

Does someone know a way to keep the visual selection state of a selected text in a RichEditBox? I want to add some basic text editing to my Windows 8.1 App but every time I select a text and click on another UI Element within the app, the RichEditBox hides the selection.
I already tried to register the unfocus event an set the selection range again but unfortunately this has no effect.
I also tried to draw my own rect over the Text using
richEdit.Document.Selection.GetRect(PointOptions.ClientCoordinates,out selectionRect, out hitCount );
This works as long as only some text within a single line is selected. If the selection is multilined I only get the top-left of and the bottom-right position of the selected Text. It seems like these are the mouse Positions where the selection where started and where it ended.
Are there any other ways keep to the selected text visibible when the RichEditBox is unfocused.

I found another workaround. Just set the selection Background when the RichEditBox is unfocused. But Jerry's Post gave me the Inspiration to this solution. Seems like this way was to simple to find it a first place:
private void RichEditOnGotFocus(object sender, RoutedEventArgs routedEventArgs)
{
ITextSelection selectedText = richEdit.Document.Selection;
if (selectedText != null)
{
richEdit.Document.Selection.SetRange(_selectionStart, _selectionEnd);
selectedText.CharacterFormat.BackgroundColor = Colors.White;
}
}
private void RichEditOnLostFocus(object sender, RoutedEventArgs routedEventArgs)
{
_selectionEnd = richEdit.Document.Selection.EndPosition;
_selectionStart = richEdit.Document.Selection.StartPosition;
ITextSelection selectedText = richEdit.Document.Selection;
if (selectedText != null)
{
selectedText.CharacterFormat.BackgroundColor = Colors.Gray;
}
}

In the WinRT Toolkit, there's a HighlightBehavior that doesn't directly solve your problem, but might offer you a solution that is acceptable.
http://winrtxamltoolkit.codeplex.com/SourceControl/latest#WinRTXamlToolkit/WinRTXamlToolkit.Shared/Controls/Behaviors/HighlightBehavior.cs
public class HighlightBehavior : Behavior<TextBlock>
{
#region SearchString
/// <summary>
/// SearchString Dependency Property
/// </summary>
public static readonly DependencyProperty SearchStringProperty =
DependencyProperty.Register(
"SearchString",
typeof(string),
typeof(HighlightBehavior),
new PropertyMetadata(null, OnSearchStringChanged));
/// <summary>
/// Gets or sets the SearchString property. This dependency property
/// indicates the search string to highlight in the associated TextBlock.
/// </summary>
public string SearchString
{
get { return (string)GetValue(SearchStringProperty); }
set { SetValue(SearchStringProperty, value); }
}
/// <summary>
/// Handles changes to the SearchString property.
/// </summary>
/// <param name="d">
/// The <see cref="DependencyObject"/> on which
/// the property has changed value.
/// </param>
/// <param name="e">
/// Event data that is issued by any event that
/// tracks changes to the effective value of this property.
/// </param>
private static void OnSearchStringChanged(
DependencyObject d, DependencyPropertyChangedEventArgs e)
{
var target = (HighlightBehavior)d;
string oldSearchString = (string)e.OldValue;
string newSearchString = target.SearchString;
target.OnSearchStringChanged(oldSearchString, newSearchString);
}
/// <summary>
/// Provides derived classes an opportunity to handle changes
/// to the SearchString property.
/// </summary>
/// <param name="oldSearchString">The old SearchString value</param>
/// <param name="newSearchString">The new SearchString value</param>
private void OnSearchStringChanged(
string oldSearchString, string newSearchString)
{
UpdateHighlight();
}
#endregion
#region IsCaseSensitive
/// <summary>
/// IsCaseSensitive Dependency Property
/// </summary>
public static readonly DependencyProperty IsCaseSensitiveProperty =
DependencyProperty.Register(
"IsCaseSensitive",
typeof(bool),
typeof(HighlightBehavior),
new PropertyMetadata(false, OnIsCaseSensitiveChanged));
/// <summary>
/// Gets or sets the IsCaseSensitive property. This dependency property
/// indicates whether the highlight behavior is case sensitive.
/// </summary>
public bool IsCaseSensitive
{
get { return (bool)GetValue(IsCaseSensitiveProperty); }
set { SetValue(IsCaseSensitiveProperty, value); }
}
/// <summary>
/// Handles changes to the IsCaseSensitive property.
/// </summary>
/// <param name="d">
/// The <see cref="DependencyObject"/> on which
/// the property has changed value.
/// </param>
/// <param name="e">
/// Event data that is issued by any event that
/// tracks changes to the effective value of this property.
/// </param>
private static void OnIsCaseSensitiveChanged(
DependencyObject d, DependencyPropertyChangedEventArgs e)
{
var target = (HighlightBehavior)d;
bool oldIsCaseSensitive = (bool)e.OldValue;
bool newIsCaseSensitive = target.IsCaseSensitive;
target.OnIsCaseSensitiveChanged(oldIsCaseSensitive, newIsCaseSensitive);
}
/// <summary>
/// Provides derived classes an opportunity to handle changes
/// to the IsCaseSensitive property.
/// </summary>
/// <param name="oldIsCaseSensitive">The old IsCaseSensitive value</param>
/// <param name="newIsCaseSensitive">The new IsCaseSensitive value</param>
private void OnIsCaseSensitiveChanged(
bool oldIsCaseSensitive, bool newIsCaseSensitive)
{
UpdateHighlight();
}
#endregion
#region HighlightTemplate
/// <summary>
/// HighlightTemplate Dependency Property
/// </summary>
public static readonly DependencyProperty HighlightTemplateProperty =
DependencyProperty.Register(
"HighlightTemplate",
typeof(DataTemplate),
typeof(HighlightBehavior),
new PropertyMetadata(null, OnHighlightTemplateChanged));
/// <summary>
/// Gets or sets the HighlightTemplate property. This dependency property
/// indicates the template to use to generate the highlight Run inlines.
/// </summary>
public DataTemplate HighlightTemplate
{
get { return (DataTemplate)GetValue(HighlightTemplateProperty); }
set { SetValue(HighlightTemplateProperty, value); }
}
/// <summary>
/// Handles changes to the HighlightTemplate property.
/// </summary>
/// <param name="d">
/// The <see cref="DependencyObject"/> on which
/// the property has changed value.
/// </param>
/// <param name="e">
/// Event data that is issued by any event that
/// tracks changes to the effective value of this property.
/// </param>
private static void OnHighlightTemplateChanged(
DependencyObject d, DependencyPropertyChangedEventArgs e)
{
var target = (HighlightBehavior)d;
DataTemplate oldHighlightTemplate = (DataTemplate)e.OldValue;
DataTemplate newHighlightTemplate = target.HighlightTemplate;
target.OnHighlightTemplateChanged(oldHighlightTemplate, newHighlightTemplate);
}
/// <summary>
/// Provides derived classes an opportunity to handle changes
/// to the HighlightTemplate property.
/// </summary>
/// <param name="oldHighlightTemplate">The old HighlightTemplate value</param>
/// <param name="newHighlightTemplate">The new HighlightTemplate value</param>
private void OnHighlightTemplateChanged(
DataTemplate oldHighlightTemplate, DataTemplate newHighlightTemplate)
{
UpdateHighlight();
}
#endregion
#region HighlightBrush
/// <summary>
/// HighlightBrush Dependency Property
/// </summary>
public static readonly DependencyProperty HighlightBrushProperty =
DependencyProperty.Register(
"HighlightBrush",
typeof(Brush),
typeof(HighlightBehavior),
new PropertyMetadata(new SolidColorBrush(Colors.Red), OnHighlightBrushChanged));
/// <summary>
/// Gets or sets the HighlightBrush property. This dependency property
/// indicates the brush to use to highlight the found instances of the search string.
/// </summary>
/// <remarks>
/// Note that the brush is ignored if HighlightTemplate is specified
/// </remarks>
public Brush HighlightBrush
{
get { return (Brush)GetValue(HighlightBrushProperty); }
set { SetValue(HighlightBrushProperty, value); }
}
/// <summary>
/// Handles changes to the HighlightBrush property.
/// </summary>
/// <param name="d">
/// The <see cref="DependencyObject"/> on which
/// the property has changed value.
/// </param>
/// <param name="e">
/// Event data that is issued by any event that
/// tracks changes to the effective value of this property.
/// </param>
private static void OnHighlightBrushChanged(
DependencyObject d, DependencyPropertyChangedEventArgs e)
{
var target = (HighlightBehavior)d;
Brush oldHighlightBrush = (Brush)e.OldValue;
Brush newHighlightBrush = target.HighlightBrush;
target.OnHighlightBrushChanged(oldHighlightBrush, newHighlightBrush);
}
/// <summary>
/// Provides derived classes an opportunity to handle changes
/// to the HighlightBrush property.
/// </summary>
/// <param name="oldHighlightBrush">The old HighlightBrush value</param>
/// <param name="newHighlightBrush">The new HighlightBrush value</param>
private void OnHighlightBrushChanged(
Brush oldHighlightBrush, Brush newHighlightBrush)
{
UpdateHighlight();
}
#endregion
private PropertyChangeEventSource<string> _textChangeEventSource;
/// <summary>
/// Called after the behavior is attached to an AssociatedObject.
/// </summary>
/// <remarks>
/// Override this to hook up functionality to the AssociatedObject.
/// </remarks>
protected override void OnAttached()
{
UpdateHighlight();
_textChangeEventSource = new PropertyChangeEventSource<string>(this.AssociatedObject, "Text", BindingMode.OneWay);
_textChangeEventSource.ValueChanged += TextChanged;
base.OnAttached();
}
/// <summary>
/// Called when the behavior is being detached from its AssociatedObject, but
/// before it has actually occurred.
/// </summary>
/// <remarks>
/// Override this to unhook functionality from the AssociatedObject.
/// </remarks>
protected override void OnDetaching()
{
ClearHighlight();
_textChangeEventSource.ValueChanged -= TextChanged;
_textChangeEventSource = null;
base.OnDetaching();
}
private void TextChanged(object sender, string s)
{
UpdateHighlight();
}
/// <summary>
/// Updates the highlight.
/// </summary>
public void UpdateHighlight()
{
if (this.AssociatedObject == null ||
string.IsNullOrEmpty(this.AssociatedObject.Text) ||
string.IsNullOrEmpty(this.SearchString))
{
ClearHighlight();
return;
}
var txt = this.AssociatedObject.Text;
var searchTxt = this.SearchString;
var processedCharacters = 0;
this.AssociatedObject.Inlines.Clear();
int pos;
while ((pos = txt.IndexOf(
searchTxt,
processedCharacters,
this.IsCaseSensitive ? StringComparison.CurrentCulture : StringComparison.CurrentCultureIgnoreCase)) >= 0)
{
if (pos > processedCharacters)
{
var run = new Run
{
Text =
txt.Substring(
processedCharacters, pos - processedCharacters)
};
this.AssociatedObject.Inlines.Add(run);
}
Run highlight;
var highlightText = txt.Substring(pos, searchTxt.Length);
if (this.HighlightTemplate == null)
{
highlight =
new Run
{
Text = highlightText,
Foreground = this.HighlightBrush
};
}
else
{
highlight = (Run)this.HighlightTemplate.LoadContent();
highlight.Text = highlightText;
}
this.AssociatedObject.Inlines.Add(highlight);
processedCharacters = pos + searchTxt.Length;
}
if (processedCharacters < txt.Length)
{
var run = new Run
{
Text =
txt.Substring(
processedCharacters, txt.Length - processedCharacters)
};
this.AssociatedObject.Inlines.Add(run);
}
}
/// <summary>
/// Clears the highlight.
/// </summary>
public void ClearHighlight()
{
if (this.AssociatedObject == null)
{
return;
}
var text = this.AssociatedObject.Text;
this.AssociatedObject.Inlines.Clear();
this.AssociatedObject.Inlines.Add(new Run{Text = text});
}
}
public abstract class Behavior<T> : Behavior where T : DependencyObject
{
#region Behavior() - CTOR
/// <summary>
/// Initializes a new instance of the <see cref="Behavior<T>"/> class.
/// </summary>
protected Behavior()
{
_associatedType = typeof(T);
}
#endregion
#region AssociatedObject
/// <summary>
/// Gets the object to which this <see cref="Behavior<T>" /> is attached.
/// </summary>
public new T AssociatedObject
{
get
{
return (T)_associatedObject;
}
internal set
{
_associatedObject = value;
}
}
#endregion
}
Best of luck!

ICustomTypeDescriptor with display

Hi guys I am implementing the interface ICustomTypeDescriptor and binding to a WPF grid. I am having issues with result, was expecting just the single column "Random" but getting something totally different. Any help would be much appreciated. Andy
/// <summary>
/// Property Descriptor for Test Result Row Wrapper
/// </summary>
public class TestResultPropertyDescriptor : PropertyDescriptor
{
//- PROPERTIES --------------------------------------------------------------------------------------------------------------
#region Properties
/// <summary>
/// Component Type
/// </summary>
public override Type ComponentType
{
get { return typeof(Dictionary<string, TestResultValue>); }
}
/// <summary>
/// Gets whether its read only
/// </summary>
public override bool IsReadOnly
{
get { return false; }
}
/// <summary>
/// Gets the Property Type
/// </summary>
public override Type PropertyType
{
get { return typeof(string); }
}
#endregion Properties
//- CONSTRUCTOR -------------------------------------------------------------------------------------------------------------
#region Constructor
/// <summary>
/// Constructor
/// </summary>
public TestResultPropertyDescriptor(string key)
: base(key, null)
{
}
#endregion Constructor
//- METHODS -----------------------------------------------------------------------------------------------------------------
#region Methods
/// <summary>
/// Can Reset Value
/// </summary>
public override bool CanResetValue(object component)
{
return true;
}
/// <summary>
/// Gets the Value
/// </summary>
public override object GetValue(object component)
{
return ((Dictionary<string, TestResultValue>)component)[base.Name].Value;
}
/// <summary>
/// Resets the Value
/// </summary>
public override void ResetValue(object component)
{
((Dictionary<string, TestResultValue>)component)[base.Name].Value = string.Empty;
}
/// <summary>
/// Sets the value
/// </summary>
public override void SetValue(object component, object value)
{
((Dictionary<string, TestResultValue>)component)[base.Name].Value = value.ToString();
}
/// <summary>
/// Gets whether the value should be serialized
/// </summary>
public override bool ShouldSerializeValue(object component)
{
return false;
}
#endregion Methods
//---------------------------------------------------------------------------------------------------------------------------
}
/// <summary>
/// Class to manage test result row data functions
/// </summary>
public class TestResultRowWrapper : Dictionary<string, TestResultValue>, ICustomTypeDescriptor
{
//- METHODS -----------------------------------------------------------------------------------------------------------------
#region Methods
/// <summary>
/// Gets the Attributes for the object
/// </summary>
AttributeCollection ICustomTypeDescriptor.GetAttributes()
{
return new AttributeCollection(null);
}
/// <summary>
/// Gets the Class name
/// </summary>
string ICustomTypeDescriptor.GetClassName()
{
return null;
}
/// <summary>
/// Gets the component Name
/// </summary>
string ICustomTypeDescriptor.GetComponentName()
{
return null;
}
/// <summary>
/// Gets the Type Converter
/// </summary>
TypeConverter ICustomTypeDescriptor.GetConverter()
{
return null;
}
/// <summary>
/// Gets the Default Event
/// </summary>
/// <returns></returns>
EventDescriptor ICustomTypeDescriptor.GetDefaultEvent()
{
return null;
}
/// <summary>
/// Gets the Default Property
/// </summary>
PropertyDescriptor ICustomTypeDescriptor.GetDefaultProperty()
{
return null;
}
/// <summary>
/// Gets the Editor
/// </summary>
object ICustomTypeDescriptor.GetEditor(Type editorBaseType)
{
return null;
}
/// <summary>
/// Gets the Events
/// </summary>
EventDescriptorCollection ICustomTypeDescriptor.GetEvents(Attribute[] attributes)
{
return new EventDescriptorCollection(null);
}
/// <summary>
/// Gets the events
/// </summary>
EventDescriptorCollection ICustomTypeDescriptor.GetEvents()
{
return new EventDescriptorCollection(null);
}
/// <summary>
/// Gets the properties
/// </summary>
PropertyDescriptorCollection ICustomTypeDescriptor.GetProperties(Attribute[] attributes)
{
List<TestResultPropertyDescriptor> properties = new List<TestResultPropertyDescriptor>();
//Add property descriptors for each entry in the dictionary
foreach (string key in this.Keys)
{
properties.Add(new TestResultPropertyDescriptor(key));
}
//Get properties also belonging to this class also
//PropertyDescriptorCollection pdc = TypeDescriptor.GetProperties(this.GetType(), attributes);
//foreach (PropertyDescriptor oPropertyDescriptor in pdc)
//{
// properties.Add(oPropertyDescriptor);
//}
return new PropertyDescriptorCollection(properties.ToArray());
}
/// <summary>
/// gets the Properties
/// </summary>
PropertyDescriptorCollection ICustomTypeDescriptor.GetProperties()
{
List<TestResultPropertyDescriptor> properties = new List<TestResultPropertyDescriptor>();
foreach (string key in this.Keys)
{
properties.Add(new TestResultPropertyDescriptor(key));
}
return new PropertyDescriptorCollection(properties.ToArray());
}
/// <summary>
/// Gets the property owner
/// </summary>
object ICustomTypeDescriptor.GetPropertyOwner(PropertyDescriptor pd)
{
return this;
}
#endregion Methods
//---------------------------------------------------------------------------------------------------------------------------
}`public class TestResultValue
{
private object _value;
public object Value
{
get
{
return _value;
}
set
{
_value = value;
}
}
}`
This is how I am using it...
var items = new ObservableCollection<TestResultRowWrapper>();
var row = new TestResultRowWrapper();
row.Add("Random", new TestResultValue() { Value=1.1});
items.Add(row);
dataGrid1.ItemsSource = items;