The code is self explanatory:
public class TooLateValidator : IApplicationStartupHandler
{
public TooLateValidator()
{
ContentService.Saving += ContentService_Saving;
}
private void ContentService_Saving(IContentService sender, Umbraco.Core.Events.SaveEventArgs<Umbraco.Core.Models.IContent> e)
{
if(DateTime.Now.Hour > 21){
e.Cancel = true;
//validation message: "it's too late for that"
// how do I throw this message to UI??
}
}
}
I'm using Umbraco 6.
As per the comments, this is a vague question and there are a number of possible solutions. It's hard to see what you need exactly but I will try and understand.
One of the outstanding bugs of Umbraco 6 was that the speech bubble would display custom messages but they would be overwritten immediately by Umbraco's own, but you can now do this easily (thanks to my friend Ali for the code source and works for me in v6.1.6).
using System.Web;
using System.Web.UI;
using Umbraco.Core;
using Umbraco.Core.Events;
using Umbraco.Core.Models;
using Umbraco.Core.Services;
using Umbraco.Web.UI;
using Umbraco.Web.UI.Pages;
public class UmbracoEvents : ApplicationEventHandler
{
protected override void ApplicationStarting(UmbracoApplicationBase umbracoApplication, ApplicationContext applicationContext)
{
//Events
ContentService.Created += Content_Created;
ContentService.Saving += Content_Saving;
}
private void Content_Saving(IContentService sender, SaveEventArgs<IContent> e)
{
// 1 JavaScript
HttpContext.Current.Response.Write("<script>alert('Saved!');</script>");
e.Cancel = true;
}
private void Content_Created(IContentService sender, NewEventArgs<IContent> e)
{
// 2 Umbraco speech bubble
var clientTool = new ClientTools((Page)HttpContext.Current.CurrentHandler);
clientTool.ShowSpeechBubble(SpeechBubbleIcon.Success, "Warning", "It is to late to do that!");
}
}
Try this
//validation message: "it's too late for that"
// how do I throw this message to UI??
e.Messages.Add(new EventMessage("validation message", "it's too late for that", EventMessageType.Error));
Related
In codenameone, when using valueOf(String s) on enum throws IllegalArgument exception: No enum const on iPhone5, iOS9, but works fine on simulator and Android. It worked fine 3-4 weeks ago. Type OK in the text box and press the button, on simulator fine, if you build it and run it for iOS9 - you will get the exception.
Bellow a snapshot code to test:
public class MyApplication {
private Form current;
private Resources theme;
enum popo { OK, ERROR,EXCEPTION};
public void init(Object context) {
theme = UIManager.initFirstTheme("/theme");
// Pro only feature, uncomment if you have a pro subscription
// Log.bindCrashProtection(true);
}
public void start() {
if(current != null){
current.show();
return;
}
Form hi = new Form("Hi World");
hi.setLayout(new BorderLayout());
final TextArea input = new TextArea();
Button testr = new Button("Touch me");
testr.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
popo q = popo.valueOf(input.getText());
Dialog.show("title",
"just found string = "+input.getText()+" \nthat gives enum = "+q.toString()
, "OK", null);
}
});
hi.addComponent(BorderLayout.CENTER, input);
hi.addComponent(BorderLayout.SOUTH,testr);
hi.show();
}
public void stop() {
current = Display.getInstance().getCurrent();
}
public void destroy() {
}
}
Many thanks,
Goran.
Enum's values() and related calls aren't implemented in Codename One. The crux of the issue is that they fail during obfuscation (for Android) and require some reflection code generated by the javac tool.
The workaround is to use something like this:
enum popo {OK("OK"), ERROR("ERROR),EXCEPTION("EXCEPTION");
public popo(String value) {
this.value = value;
}
String value;
};
Then use myPopo.value.
I am developing Umbraco 7 MVC application and my requirement is to add Item inside Umbraco. Item name should be unique. For that used the below code but I am getting the error "Oops: this document is published but is not in the cache (internal error)"
protected override void ApplicationStarting(UmbracoApplicationBase umbracoApplication,
ApplicationContext applicationContext)
{
ContentService.Publishing += ContentService_Publishing;
}
private void ContentService_Publishing(IPublishingStrategy sender, PublishEventArgs<IContent> e)
{
try
{
if(newsItemExists)
{
e.Cancel = true;
}
}
catch (Exception ex)
{
e.Cancel = true;
Logger.Error(ex.ToString());
}
}
Then I tried adding code to unpublish but its not working i.e the node is getting published. Below is my code
private void ContentService_Publishing(IPublishingStrategy sender, PublishEventArgs<IContent> e)
{
try
{
int itemId=1234; //CurrentPublishedNodeId
if(newsItemExists)
{
IContent content = ContentService.GetById(itemId);
ContentService.UnPublish(content);
library.UpdateDocumentCache(item.Id);
}
}
catch (Exception ex)
{
e.Cancel = true;
Logger.Error(ex.ToString());
}
}
But with the above code, if you give the CurrentPublishedNodeId=2345 //someOthernodeId its unpublished correctly.
Can you please help me on this issue.
You don't have to do this, Umbraco will automatically append (1) to the name if the item already exists (so it IS unique).
If you don't want this behavior you can check in the following way:
protected override void ApplicationStarting(UmbracoApplicationBase umbracoApplication, ApplicationContext applicationContext)
{
ContentService.Publishing += ContentService_Publishing;
}
private void ContentService_Publishing(Umbraco.Core.Publishing.IPublishingStrategy sender, PublishEventArgs<IContent> e)
{
var contentService = UmbracoContext.Current.Application.Services.ContentService;
// It's posible to batch publish items, so go through all items
// even though there might only be one in the list of PublishedEntities
foreach (var item in e.PublishedEntities)
{
var currentPage = contentService.GetById(item.Id);
// Go to the current page's parent and loop through all of it's children
// That way you can determine if any page that is on the same level as the
// page you're trying to publish has the same name
foreach (var contentItem in currentPage.Parent().Children())
{
if (string.Equals(contentItem.Name.Trim(), currentPage.Name.Trim(), StringComparison.InvariantCultureIgnoreCase))
e.Cancel = true;
}
}
}
I think your problem might be that you're not looping through all PublishedEntities but using some other way to determine the current page Id.
Note: Please please please do not use the library.UpdateDocumentCache this, there's absolutely no need, ContentService.UnPublish will take care of the cache state.
I am working with an attached behavior for logging user actions on a ScrollBar.
my code:
class ScrollBarLogBehavior : Behavior<ScrollBar>
{
protected override void OnAttached()
{
base.OnAttached();
AssociatedObject.Loaded += new RoutedEventHandler(AssociatedObject_Loaded);
}
void AssociatedObject_Loaded(object sender, RoutedEventArgs e)
{
...
var track = (Track)AssociatedObject.Template.FindName("PART_Track", AssociatedObject);
// ** HERE is the problem: track is null ! **
...
}
How can I detect that the template has loaded and I can find the Track?
(when I call AssociatedObject.Template.LoadContent() the result containt the requested Track, so it i a matter of timing and not a matter of wrong template or naming)
Override the method OnApplyTemplate
public override void OnApplyTemplate()
{
base.OnApplyTemplate();
var textBox = Template.FindName("PART_Textbox", this) as TextBox;
}
I did not find any good way to detect when the template was loaded. However, I did find a way to find the Track:
in OnAttached() - register to Scroll event fo the ScrollBar (this can only happen after the entire template is loaded, of course):
protected override void OnAttached()
{
base.OnAttached();
_scrollHandler = new ScrollEventHandler(AssociatedObject_Scroll);
AssociatedObject.AddHandler(ScrollBar.ScrollEvent, _scrollHandler, true);
}
When handling the Scroll event, remove registration and find the Thumb:
void AssociatedObject_Scroll(object sender, ScrollEventArgs e)
{
var track = (Track)AssociatedObject.Template.FindName("PART_Track", Associated
if (track == null)
return;
AssociatedObject.RemoveHandler(ScrollBar.ScrollEvent, _scrollHandler);
// do my work with Track
...
}
If I understand correctly, you wish to create an attached behavior that will reference a template part after the ScrollBar has been loaded.
The following should work:
internal static class ScrollBarLogBehavior
{
public static readonly DependencyProperty LogUserActionProperty = DependencyProperty.RegisterAttached(
"LogUserAction",
typeof(bool),
typeof(ScrollBarLogBehavior),
new UIPropertyMetadata(default(bool), LogUserActionChanged));
public static bool GetLogUserAction(DependencyObject obj)
{
return (bool)obj.GetValue(LogUserActionProperty);
}
public static void SetLogUserAction(DependencyObject obj, bool value)
{
obj.SetValue(LogUserActionProperty, value);
}
public static void LogUserActionChanged(DependencyObject s, DependencyPropertyChangedEventArgs e)
{
if (s is ScrollBar scrollBar)
{
scrollBar.Loaded += OnScrollBarLoaded;
}
}
private static void OnScrollBarLoaded(object sender, RoutedEventArgs e)
{
if (sender is ScrollBar scrollBar)
{
if (scrollBar.Template != null)
{
// I'm not sure, but the `name` in the following method call might be case sensitive.
if (scrollBar.Template.FindName("PART_Track", scrollBar) is Track track)
{
// do work with `track` here
}
}
}
}
}
where you would "attach" the behavior in your XAML with:
<ScrollBar guiControls:ScrollBarLogBehavior.LogUserAction="True">
<!-- more here -->
</ScrollBar>
BE ADVISED: this implementation completely ignores the bool value that is being set for LogUserAction
I have an external dll written in C# and I studied from the assemblies documentation that it writes its debug messages to the Console using Console.WriteLine.
this DLL writes to console during my interaction with the UI of the Application, so i don't make DLL calls directly, but i would capture all console output , so i think i got to intialize in form load , then get that captured text later.
I would like to redirect all the output to a string variable.
I tried Console.SetOut, but its use to redirect to string is not easy.
As it seems like you want to catch the Console output in realtime, I figured out that you might create your own TextWriter implementation that fires an event whenever a Write or WriteLine happens on the Console.
The writer looks like this:
public class ConsoleWriterEventArgs : EventArgs
{
public string Value { get; private set; }
public ConsoleWriterEventArgs(string value)
{
Value = value;
}
}
public class ConsoleWriter : TextWriter
{
public override Encoding Encoding { get { return Encoding.UTF8; } }
public override void Write(string value)
{
if (WriteEvent != null) WriteEvent(this, new ConsoleWriterEventArgs(value));
base.Write(value);
}
public override void WriteLine(string value)
{
if (WriteLineEvent != null) WriteLineEvent(this, new ConsoleWriterEventArgs(value));
base.WriteLine(value);
}
public event EventHandler<ConsoleWriterEventArgs> WriteEvent;
public event EventHandler<ConsoleWriterEventArgs> WriteLineEvent;
}
If it's a WinForm app, you can setup the writer and consume its events in the Program.cs like this:
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
using (var consoleWriter = new ConsoleWriter())
{
consoleWriter.WriteEvent += consoleWriter_WriteEvent;
consoleWriter.WriteLineEvent += consoleWriter_WriteLineEvent;
Console.SetOut(consoleWriter);
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new Form1());
}
}
static void consoleWriter_WriteLineEvent(object sender, Program.ConsoleWriterEventArgs e)
{
MessageBox.Show(e.Value, "WriteLine");
}
static void consoleWriter_WriteEvent(object sender, Program.ConsoleWriterEventArgs e)
{
MessageBox.Show(e.Value, "Write");
}
It basically amounts to the following:
var originalConsoleOut = Console.Out; // preserve the original stream
using(var writer = new StringWriter())
{
Console.SetOut(writer);
Console.WriteLine("some stuff"); // or make your DLL calls :)
writer.Flush(); // when you're done, make sure everything is written out
var myString = writer.GetStringBuilder().ToString();
}
Console.SetOut(originalConsoleOut); // restore Console.Out
So in your case you'd set this up before making calls to your third-party DLL.
You can also call SetOut with Console.OpenStandardOutput, this will restore the original output stream:
Console.SetOut(new StreamWriter(Console.OpenStandardOutput()));
Or you can wrap it up in a helper method that takes some code as an argument run it and returns the string that was printed. Notice how we gracefully handle exceptions.
public string RunCodeReturnConsoleOut(Action code)
{
string result;
var originalConsoleOut = Console.Out;
try
{
using (var writer = new StringWriter())
{
Console.SetOut(writer);
code();
writer.Flush();
result = writer.GetStringBuilder().ToString();
}
return result;
}
finally
{
Console.SetOut(originalConsoleOut);
}
}
Using solutions proposed by #Adam Lear and #Carlo V. Dango I created a helper class:
public sealed class RedirectConsole : IDisposable
{
private readonly Action<string> logFunction;
private readonly TextWriter oldOut = Console.Out;
private readonly StringWriter sw = new StringWriter();
public RedirectConsole(Action<string> logFunction)
{
this.logFunction = logFunction;
Console.SetOut(sw);
}
public void Dispose()
{
Console.SetOut(oldOut);
sw.Flush();
logFunction(sw.ToString());
sw.Dispose();
}
}
which can be used in the following way:
public static void MyWrite(string str)
{
// print console output to Log/Socket/File
}
public static void Main()
{
using(var r = new RedirectConsole(MyWrite)) {
Console.WriteLine("Message 1");
Console.WriteLine("Message 2");
}
// After the using section is finished,
// MyWrite will be called once with a string containing all messages,
// which has been written during the using section,
// separated by new line characters
}
Any links to a good template for a windows service? (looking for C# code)
Something that has the basic functionality that I could extend.
It is a little clear what you are looking for. The Windows Service project type in Visual Studio creates a project with the templates you need to get going with a basic windows service.
You can also look at this article from C# Online. It goes over a few ideas and has a few parts to the article. (Note; the page seems to loads a little slow so be patient)
I use VS2005 and I like to start with the basic template.
Modify the Service class to this
using System;
using System.ServiceProcess;
using System.Timers;
namespace WindowsService1
{
public partial class Service1 : ServiceBase
{
//better is to read from settings or config file
private readonly Double _interval = (new TimeSpan(1, 0, 0, 0)).TotalMilliseconds;
private Timer m_Timer;
public Service1()
{
InitializeComponent();
Init();
}
private void Init()
{
m_Timer = new Timer();
m_Timer.BeginInit();
m_Timer.AutoReset = false;
m_Timer.Enabled = true;
m_Timer.Interval = 1000.0;
m_Timer.Elapsed += m_Timer_Elapsed;
m_Timer.EndInit();
}
private void m_Timer_Elapsed(object sender, ElapsedEventArgs e)
{
//TODO WORK WORK WORK
RestartTimer();
}
private void RestartTimer()
{
m_Timer.Interval = _interval;
m_Timer.Start();
}
protected override void OnStart(string[] args)
{
base.OnStart(args);
Start();
}
protected override void OnStop()
{
Stop();
base.OnStop();
}
public void Start()
{
m_Timer.Start();
}
public new void Stop()
{
m_Timer.Stop();
}
}
}
Install using InstallUtil.exe, after you have added an installer : http://msdn.microsoft.com/en-us/library/ddhy0byf(VS.80).aspx
Keep the Init function small and fast, otherwise your service will not start with an error that the service did not respond in a timely fashion
Hope this helps