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  • Is MVVM pointless?

    - by joebeazelman
    Is orthodox MVVM implementation pointless? I am creating a new application and I considered Windows Forms and WPF. I chose WPF because it's future-proof and offer lots of flexibility. There is less code and easier to make significant changes to your UI using XAML. Since the choice for WPF is obvious, I figured that I may as well go all the way by using MVVM as my application architecture since it offers blendability, separation concerns and unit testability. Theoretically, it seems beautiful like the holy grail of UI programming. This brief adventure; however, has turned into a real headache. As expected in practice, I’m finding that I’ve traded one problem for another. I tend to be an obsessive programmer in that I want to do things the right way so that I can get the right results and possibly become a better programmer. The MVVM pattern just flunked my test on productivity and has just turned into a big yucky hack! The clear case in point is adding support for a Modal dialog box. The correct way is to put up a dialog box and tie it to a view model. Getting this to work is difficult. In order to benefit from the MVVM pattern, you have to distribute code in several places throughout the layers of your application. You also have to use esoteric programming constructs like templates and lamba expressions. Stuff that makes you stare at the screen scratching your head. This makes maintenance and debugging a nightmare waiting to happen as I recently discovered. I had an about box working fine until I got an exception the second time I invoked it, saying that it couldn’t show the dialog box again once it is closed. I had to add an event handler for the close functionality to the dialog window, another one in the IDialogView implementation of it and finally another in the IDialogViewModel. I thought MVVM would save us from such extravagant hackery! There are several folks out there with competing solutions to this problem and they are all hacks and don’t provide a clean, easily reusable, elegant solution. Most of the MVVM toolkits gloss over dialogs and when they do address them, they are just alert boxes that don’t require custom interfaces or view models. I’m planning on giving up on the MVVM view pattern, at least its orthodox implementation of it. What do you think? Has it been worth the trouble for you if you had any? Am I just a incompetent programmer or does MVVM not what it's hyped up to be?

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  • ListView item won't extend width to fill_parent

    - by slybloty
    I have a custom ViewGroup that inflates a ListView from an xml layout. The list item layout is inflated from another xml file. All of the views are set to fill_parent. The ListView fills its parent, but the ListView items don't. I've tried putting the ListView in a LinearLayout and assigning weight to it. Tried RelativeLayout as well. Also, I've built the ListView programmaticaly, without using the xml layout. Even changed the LayoutParams before adding the view to the ViewGroup. I've also taken in consideration these posts as well: Width of clickable area in ListView w/ onListItemClick, In Android, how can I set a ListView item's height and width?, Android Listview width prob. Any ideas to why the items don't extend to fill width? And how to extend them? MyViewGroup class: public class MyViewGroup extends ViewGroup { public MyViewGroup(Context context, AttributeSet attrs) { super(context, attrs); generateMyViewGroup(); } private void generateMyViewGroup() { ListView main = (ListView) View.inflate(getContext(), R.layout.layout_main, null); main.setAdapter(new MyAdapter(getContext())); this.addView(main); } @Override protected void onLayout(boolean changed, int l, int t, int r, int b) { this.getChildAt(0).layout(l, t, r, b); } } ListView xml layout: <?xml version="1.0" encoding="utf-8"?> <ListView xmlns:android="http://schemas.android.com/apk/res/android" android:id="@android:id/list" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginRight="3dp" android:background="#77000000" android:cacheColorHint="#00000000" android:divider="#00000000" android:dividerHeight="0dp" android:drawSelectorOnTop="false" android:scrollbars="vertical" > </ListView> ListView item layout: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/layout_main_category" android:layout_width="fill_parent" android:layout_height="wrap_content" android:background="@color/mainBackground" android:gravity="fill_horizontal|center_vertical" android:orientation="vertical" > <TextView android:id="@+id/main_category" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginLeft="8dp" android:layout_marginRight="8dp" android:paddingBottom="7dp" android:paddingLeft="20dp" android:paddingRight="5dp" android:paddingTop="20dp" android:text="test" android:textColor="@color/mainCategory" android:textSize="15sp" android:textStyle="bold" /> </LinearLayout>

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  • Java language features which have no equivalent in C#

    - by jthg
    Having mostly worked with C#, I tend to think in terms of C# features which aren't available in Java. After working extensively with Java over the last year, I've started to discover Java features that I wish were in C#. Below is a list of the ones that I'm aware of. Can anyone think of other Java language features which a person with a C# background may not realize exists? The articles http://www.25hoursaday.com/CsharpVsJava.html and http://en.wikipedia.org/wiki/Comparison_of_Java_and_C_Sharp give a very extensive list of differences between Java and C#, but I wonder whether I missed anything in the (very) long articles. I can also think of one feature (covariant return type) which I didn't see mentioned in either article. Please limit answers to language or core library features which can't be effectively implemented by your own custom code or third party libraries. Covariant return type - a method can be overridden by a method which returns a more specific type. Useful when implementing an interface or extending a class and you want a method to override a base method, but return a type more specific to your class. Enums are classes - an enum is a full class in java, rather than a wrapper around a primitive like in .Net. Java allows you to define fields and methods on an enum. Anonymous inner classes - define an anonymous class which implements a method. Although most of the use cases for this in Java are covered by delegates in .Net, there are some cases in which you really need to pass multiple callbacks as a group. It would be nice to have the choice of using an anonymous inner class. Checked exceptions - I can see how this is useful in the context of common designs used with Java applications, but my experience with .Net has put me in a habit of using exceptions only for unrecoverable conditions. I.E. exceptions indicate a bug in the application and are only caught for the purpose of logging. I haven't quite come around to the idea of using exceptions for normal program flow. strictfp - Ensures strict floating point arithmetic. I'm not sure what kind of applications would find this useful. fields in interfaces - It's possible to declare fields in interfaces. I've never used this. static imports - Allows one to use the static methods of a class without qualifying it with the class name. I just realized today that this feature exists. It sounds like a nice convenience.

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  • Gateway Page Between ASP and an ASP.NET Page

    - by ajdams
    I'll admit, I am pretty new with ASP .NET programming and I have been asked to take all our gateway pages (written in classic ASP) and make one universal gateway page to the few C# .NET applications we have (that I wrote). I tried searching here and the web and couldn't find much of anything describing a great way to do this and figured I was either not searching properly or was not properly naming what I am trying to do. I decided to to take one of the main gateway pages we had in classic ASP and use that as a base for my new gateway. Without boring you with a bunch of code I will summarize my gateway in steps and then can take advice/critique from there. EDIT: Basically what I am trying to do is go from a classic ASP page to a ASP .NET page and then back again. EDIT2: If my question is still unclear I am asking if what I have an the right start and if anyone has suggestions as to how this could be better. It can be as generic as need-be, not looking for a specific off-the-shelf code answer. My Gateway page: In the first part of the page I grab session variables and determine if the user is leaving or returning through the gateway: Code (in VB): uid = Request.QueryString("GUID") If uid = "" Then direction = "Leaving" End If ' Gather available user information. userid = Session("lnglrnregid") bankid = Session("strBankid") ' Return location. floor = Request.QueryString("Floor") ' The option chosen will determine if the user continues as SSL or not. ' If they are currently SSL, they should remain if chosen. option1 = Application(bankid & "Option1") If MID(option1, 6, 1) = "1" Then sslHttps = "s" End If Next I enter the uid into a database table (SQL-Server 2005) as a uniqueidentifier field called GUID. I omitted the stored procedure call. Lastly, I use the direction variable to determine if the user is leaving or returning and do redirects from there to the different areas of the site. Code (In VB again): If direction = "Leaving" Then Select Case floor Case "sscat", "ssassign" ' A SkillSoft course Response.Redirect("Some site here") Case "lrcat", "lrassign" ' A LawRoom course Response.Redirect("Some site here") Case Else ' Some other SCORM course like MindLeaders or a custom upload. Response.Redirect("Some site here") End Select Session.Abandon Else ' The only other direction is "Returning" ..... That's about it so far - so like I said, not an expert so any suggestions would be greatly appreciated!

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  • how to change a button into a imagebutton in asp.net c#

    - by sweetsecret
    How to change the button into image button... the button in the beginning has "Pick a date" when clicked a calender pops out and the when a date is selected a label at the bottom reading the date comes in and the text on the button changes to disabled... i want to palce a imagebutton having a image icon of the calender and rest of the function will be the same.... the code as follows: using System; using System.Collections.Generic; using System.ComponentModel; using System.Text; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; [assembly: TagPrefix("DatePicker", "EWS")] namespace EclipseWebSolutions.DatePicker { [DefaultProperty("Text")] [ToolboxData("<{0}:DatePicker runat=server")] [DefaultEvent("SelectionChanged")] [ValidationProperty("TextValue")] public class DatePicker : WebControl, INamingContainer { #region Properties public TextBox txtDate = new TextBox(); public Calendar calDate = new Calendar(); public Button btnDate = new Button(); public Panel pnlCalendar = new Panel(); private enum ViewStateConstants { ValidationGroup, RegularExpression, ErrorMessage, RegExText, CalendarPosition, FormatString, ExpandLabel, CollapseLabel, ApplyDefaultStyle, CausesValidation, } /// <summary> /// Defines the available display modes of this calendar. /// </summary> public enum CalendarDisplay { DisplayRight, DisplayBelow } /// <summary> /// Where to display the popup calendar. /// </summary> [Category("Behaviour")] [Localizable(true)] public CalendarDisplay CalendarPosition { get { if (ViewState[ViewStateConstants.CalendarPosition.ToString()] == null) { ViewState[ViewStateConstants.CalendarPosition.ToString()] = CalendarDisplay.DisplayRight; } return (CalendarDisplay)ViewState[ViewStateConstants.CalendarPosition.ToString()]; } set { ViewState[ViewStateConstants.CalendarPosition.ToString()] = value; } } /// <summary> /// Text version of the control's value, for use by ASP.NET validators. /// </summary> public string TextValue { get { return txtDate.Text; } } /// <summary> /// Holds the current date value of this control. /// </summary> [Category("Behaviour")] [Localizable(true)] [Bindable(true, BindingDirection.TwoWay)] public DateTime DateValue { get { try { if (txtDate.Text == "") return DateTime.MinValue; DateTime val = DateTime.Parse(txtDate.Text); return val; } catch (ArgumentNullException) { return DateTime.MinValue; } catch (FormatException) { return DateTime.MinValue; } } set { if (value == DateTime.MinValue) { txtDate.Text = ""; } else { txtDate.Text = value.ToShortDateString(); } } } [Category("Behavior"), Themeable(false), DefaultValue("")] public virtual string ValidationGroup { get { if (ViewState[ViewStateConstants.ValidationGroup.ToString()] == null) { return string.Empty; } else { return (string)ViewState[ViewStateConstants.ValidationGroup.ToString()]; } } set { ViewState[ViewStateConstants.ValidationGroup.ToString()] = value; } } /// <summary> /// The label of the exand button. Shown when the calendar is hidden. /// </summary> [Bindable(true)] [Category("Appearance")] [DefaultValue("PickDate")] [Localizable(true)] public string ExpandButtonLabel { get { String s = (String)ViewState[ViewStateConstants.ExpandLabel.ToString()]; return ((s == null) ? "PickDate" : s); } set { ViewState[ViewStateConstants.ExpandLabel.ToString()] = value; } } /// <summary> /// The label of the collapse button. Shown when the calendar is visible. /// </summary> [Bindable(true)] [Category("Appearance")] [DefaultValue("Disabled")] [Localizable(true)] public string CollapseButtonLabel { get { String s = (String)ViewState[ViewStateConstants.CollapseLabel.ToString()]; return ((s == null) ? "Disabled" : s); } set { ViewState[ViewStateConstants.CollapseLabel.ToString()] = value; } } /// <summary> /// Whether to apply the default style. Disable this if you want to apply a custom style, or to use themes and skins /// to style the control. /// </summary> [Category("Appearance")] [DefaultValue(true)] [Localizable(true)] public bool ApplyDefaultStyle { get { if (ViewState[ViewStateConstants.ApplyDefaultStyle.ToString()] == null) { ViewState[ViewStateConstants.ApplyDefaultStyle.ToString()] = true; } return (bool)ViewState[ViewStateConstants.ApplyDefaultStyle.ToString()]; } set { ViewState[ViewStateConstants.ApplyDefaultStyle.ToString()] = value; } } /// <summary> /// Causes Validation /// </summary> [Category("Appearance")] [DefaultValue(false)] [Localizable(false)] public bool CausesValidation { get { if (ViewState[ViewStateConstants.CausesValidation.ToString()] == null) { ViewState[ViewStateConstants.CausesValidation.ToString()] = false; } return (bool)ViewState[ViewStateConstants.CausesValidation.ToString()]; } set { ViewState[ViewStateConstants.CausesValidation.ToString()] = value; btnDate.CausesValidation = value; } } #endregion #region Events /// <summary> /// A day was selected from the calendar control. /// </summary> public event EventHandler SelectionChanged; protected virtual void OnSelectionChanged() { if (SelectionChanged != null) // only raise the event if someone is listening. { SelectionChanged(this, EventArgs.Empty); } } #endregion #region Event Handlers /// <summary> /// The +/- button was clicked. /// </summary> protected void btnDate_Click(object sender, System.EventArgs e) { if (!calDate.Visible) { // expand the calendar calDate.Visible = true; txtDate.Enabled = false; btnDate.Text = CollapseButtonLabel; if (DateValue != DateTime.MinValue) { calDate.SelectedDate = DateValue; calDate.VisibleDate = DateValue; } } else { // collapse the calendar calDate.Visible = false; txtDate.Enabled = true; btnDate.Text = ExpandButtonLabel; } } /// <summary> /// A date was selected from the calendar. /// </summary> protected void calDate_SelectionChanged(object sender, System.EventArgs e) { calDate.Visible = false; txtDate.Visible = true; btnDate.Text = ExpandButtonLabel; txtDate.Enabled = true; txtDate.Text = calDate.SelectedDate.ToShortDateString(); OnSelectionChanged(); } #endregion /// <summary> /// Builds the contents of this control. /// </summary> protected override void CreateChildControls() { btnDate.Text = ExpandButtonLabel; btnDate.CausesValidation = CausesValidation; txtDate.ID = "txtDate"; calDate.Visible = false; if (ApplyDefaultStyle) { calDate.BackColor = System.Drawing.Color.White; calDate.BorderColor = System.Drawing.Color.FromArgb(10066329); calDate.CellPadding = 2; calDate.DayNameFormat = DayNameFormat.Shortest; calDate.Font.Name = "Verdana"; calDate.Font.Size = FontUnit.Parse("8pt"); calDate.ForeColor = System.Drawing.Color.Black; calDate.Height = new Unit(150, UnitType.Pixel); calDate.Width = new Unit(180, UnitType.Pixel); calDate.DayHeaderStyle.BackColor = System.Drawing.Color.FromArgb(228, 228, 228); calDate.DayHeaderStyle.Font.Size = FontUnit.Parse("7pt"); calDate.TitleStyle.Font.Bold = true; calDate.WeekendDayStyle.BackColor = System.Drawing.Color.FromArgb(255, 255, 204); } ConnectEventHandlers(); pnlCalendar.Controls.Add(calDate); pnlCalendar.Style["position"] = "absolute"; pnlCalendar.Style["filter"] = "alpha(opacity=95)"; pnlCalendar.Style["-moz-opacity"] = ".95"; pnlCalendar.Style["opacity"] = ".95"; pnlCalendar.Style["z-index"] = "2"; pnlCalendar.Style["background-color"] = "White"; if (CalendarPosition == CalendarDisplay.DisplayBelow) { pnlCalendar.Style["margin-top"] = "27px"; } else { pnlCalendar.Style["display"] = "inline"; } Controls.Add(txtDate); Controls.Add(pnlCalendar); Controls.Add(btnDate); base.CreateChildControls(); } /// <summary> /// Render the contents of this control. /// </summary> /// <param name="output">The HtmlTextWriter to use.</param> protected override void RenderContents(HtmlTextWriter output) { switch (CalendarPosition) { case CalendarDisplay.DisplayRight: { txtDate.RenderControl(output); btnDate.RenderControl(output); pnlCalendar.RenderControl(output); break; } case CalendarDisplay.DisplayBelow: { pnlCalendar.RenderControl(output); txtDate.RenderControl(output); btnDate.RenderControl(output); break; } } } /// <summary> /// Connect event handlers to events. /// </summary> private void ConnectEventHandlers() { btnDate.Click += new System.EventHandler(btnDate_Click); calDate.SelectionChanged += new System.EventHandler(calDate_SelectionChanged); } } } using System; using System.Collections.Generic; using System.ComponentModel; using System.Text; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; [assembly: TagPrefix("DatePicker", "EWS")] namespace EclipseWebSolutions.DatePicker { [DefaultProperty("Text")] [ToolboxData("<{0}:DatePicker runat=server")] [DefaultEvent("SelectionChanged")] [ValidationProperty("TextValue")] public class DatePicker : WebControl, INamingContainer { #region Properties public TextBox txtDate = new TextBox(); public Calendar calDate = new Calendar(); public Button btnDate = new Button(); public Panel pnlCalendar = new Panel(); private enum ViewStateConstants { ValidationGroup, RegularExpression, ErrorMessage, RegExText, CalendarPosition, FormatString, ExpandLabel, CollapseLabel, ApplyDefaultStyle, CausesValidation, } /// <summary> /// Defines the available display modes of this calendar. /// </summary> public enum CalendarDisplay { DisplayRight, DisplayBelow } /// <summary> /// Where to display the popup calendar. /// </summary> [Category("Behaviour")] [Localizable(true)] public CalendarDisplay CalendarPosition { get { if (ViewState[ViewStateConstants.CalendarPosition.ToString()] == null) { ViewState[ViewStateConstants.CalendarPosition.ToString()] = CalendarDisplay.DisplayRight; } return (CalendarDisplay)ViewState[ViewStateConstants.CalendarPosition.ToString()]; } set { ViewState[ViewStateConstants.CalendarPosition.ToString()] = value; } } /// <summary> /// Text version of the control's value, for use by ASP.NET validators. /// </summary> public string TextValue { get { return txtDate.Text; } } /// <summary> /// Holds the current date value of this control. /// </summary> [Category("Behaviour")] [Localizable(true)] [Bindable(true, BindingDirection.TwoWay)] public DateTime DateValue { get { try { if (txtDate.Text == "") return DateTime.MinValue; DateTime val = DateTime.Parse(txtDate.Text); return val; } catch (ArgumentNullException) { return DateTime.MinValue; } catch (FormatException) { return DateTime.MinValue; } } set { if (value == DateTime.MinValue) { txtDate.Text = ""; } else { txtDate.Text = value.ToShortDateString(); } } } [Category("Behavior"), Themeable(false), DefaultValue("")] public virtual string ValidationGroup { get { if (ViewState[ViewStateConstants.ValidationGroup.ToString()] == null) { return string.Empty; } else { return (string)ViewState[ViewStateConstants.ValidationGroup.ToString()]; } } set { ViewState[ViewStateConstants.ValidationGroup.ToString()] = value; } } /// <summary> /// The label of the exand button. Shown when the calendar is hidden. /// </summary> [Bindable(true)] [Category("Appearance")] [DefaultValue("PickDate")] [Localizable(true)] public string ExpandButtonLabel { get { String s = (String)ViewState[ViewStateConstants.ExpandLabel.ToString()]; return ((s == null) ? "PickDate" : s); } set { ViewState[ViewStateConstants.ExpandLabel.ToString()] = value; } } /// <summary> /// The label of the collapse button. Shown when the calendar is visible. /// </summary> [Bindable(true)] [Category("Appearance")] [DefaultValue("Disabled")] [Localizable(true)] public string CollapseButtonLabel { get { String s = (String)ViewState[ViewStateConstants.CollapseLabel.ToString()]; return ((s == null) ? "Disabled" : s); } set { ViewState[ViewStateConstants.CollapseLabel.ToString()] = value; } } /// <summary> /// Whether to apply the default style. Disable this if you want to apply a custom style, or to use themes and skins /// to style the control. /// </summary> [Category("Appearance")] [DefaultValue(true)] [Localizable(true)] public bool ApplyDefaultStyle { get { if (ViewState[ViewStateConstants.ApplyDefaultStyle.ToString()] == null) { ViewState[ViewStateConstants.ApplyDefaultStyle.ToString()] = true; } return (bool)ViewState[ViewStateConstants.ApplyDefaultStyle.ToString()]; } set { ViewState[ViewStateConstants.ApplyDefaultStyle.ToString()] = value; } } /// <summary> /// Causes Validation /// </summary> [Category("Appearance")] [DefaultValue(false)] [Localizable(false)] public bool CausesValidation { get { if (ViewState[ViewStateConstants.CausesValidation.ToString()] == null) { ViewState[ViewStateConstants.CausesValidation.ToString()] = false; } return (bool)ViewState[ViewStateConstants.CausesValidation.ToString()]; } set { ViewState[ViewStateConstants.CausesValidation.ToString()] = value; btnDate.CausesValidation = value; } } #endregion #region Events /// <summary> /// A day was selected from the calendar control. /// </summary> public event EventHandler SelectionChanged; protected virtual void OnSelectionChanged() { if (SelectionChanged != null) // only raise the event if someone is listening. { SelectionChanged(this, EventArgs.Empty); } } #endregion #region Event Handlers /// <summary> /// The +/- button was clicked. /// </summary> protected void btnDate_Click(object sender, System.EventArgs e) { if (!calDate.Visible) { // expand the calendar calDate.Visible = true; txtDate.Enabled = false; btnDate.Text = CollapseButtonLabel; if (DateValue != DateTime.MinValue) { calDate.SelectedDate = DateValue; calDate.VisibleDate = DateValue; } } else { // collapse the calendar calDate.Visible = false; txtDate.Enabled = true; btnDate.Text = ExpandButtonLabel; } } /// <summary> /// A date was selected from the calendar. /// </summary> protected void calDate_SelectionChanged(object sender, System.EventArgs e) { calDate.Visible = false; txtDate.Visible = true; btnDate.Text = ExpandButtonLabel; txtDate.Enabled = true; txtDate.Text = calDate.SelectedDate.ToShortDateString(); OnSelectionChanged(); } #endregion /// <summary> /// Builds the contents of this control. /// </summary> protected override void CreateChildControls() { btnDate.Text = ExpandButtonLabel; btnDate.CausesValidation = CausesValidation; txtDate.ID = "txtDate"; calDate.Visible = false; if (ApplyDefaultStyle) { calDate.BackColor = System.Drawing.Color.White; calDate.BorderColor = System.Drawing.Color.FromArgb(10066329); calDate.CellPadding = 2; calDate.DayNameFormat = DayNameFormat.Shortest; calDate.Font.Name = "Verdana"; calDate.Font.Size = FontUnit.Parse("8pt"); calDate.ForeColor = System.Drawing.Color.Black; calDate.Height = new Unit(150, UnitType.Pixel); calDate.Width = new Unit(180, UnitType.Pixel); calDate.DayHeaderStyle.BackColor = System.Drawing.Color.FromArgb(228, 228, 228); calDate.DayHeaderStyle.Font.Size = FontUnit.Parse("7pt"); calDate.TitleStyle.Font.Bold = true; calDate.WeekendDayStyle.BackColor = System.Drawing.Color.FromArgb(255, 255, 204); } ConnectEventHandlers(); pnlCalendar.Controls.Add(calDate); pnlCalendar.Style["position"] = "absolute"; pnlCalendar.Style["filter"] = "alpha(opacity=95)"; pnlCalendar.Style["-moz-opacity"] = ".95"; pnlCalendar.Style["opacity"] = ".95"; pnlCalendar.Style["z-index"] = "2"; pnlCalendar.Style["background-color"] = "White"; if (CalendarPosition == CalendarDisplay.DisplayBelow) { pnlCalendar.Style["margin-top"] = "27px"; } else { pnlCalendar.Style["display"] = "inline"; } Controls.Add(txtDate); Controls.Add(pnlCalendar); Controls.Add(btnDate); base.CreateChildControls(); } /// <summary> /// Render the contents of this control. /// </summary> /// <param name="output">The HtmlTextWriter to use.</param> protected override void RenderContents(HtmlTextWriter output) { switch (CalendarPosition) { case CalendarDisplay.DisplayRight: { txtDate.RenderControl(output); btnDate.RenderControl(output); pnlCalendar.RenderControl(output); break; } case CalendarDisplay.DisplayBelow: { pnlCalendar.RenderControl(output); txtDate.RenderControl(output); btnDate.RenderControl(output); break; } } } /// <summary> /// Connect event handlers to events. /// </summary> private void ConnectEventHandlers() { btnDate.Click += new System.EventHandler(btnDate_Click); calDate.SelectionChanged += new System.EventHandler(calDate_SelectionChanged); } } } <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" % <%@ Register Assembly="EclipseWebSolutions.DatePicker" Namespace="EclipseWebSolutions.DatePicker" TagPrefix="ews" % Untitled Page       using System; using System.Data; using System.Configuration; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } protected void DatePicker1_SelectionChanged(object sender, EventArgs e) { Label1.Text = DatePicker1.DateValue.ToShortDateString(); pnlLabel.Update(); } }

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  • WPF: Binding to ObservableCollection in ControlTemplate is not updated

    - by Julian Lettner
    I created a ControlTemplate for my custom control MyControl. MyControl derives from System.Windows.Controls.Control and defines the following property public ObservableCollection<MyControl> Children{ get; protected set; }. To display the nested child controls I am using an ItemsControl (StackPanel) which is surrounded by a GroupBox. If there are no child controls, I want to hide the GroupBox. Everything works fine on application startup: The group box and child controls are shown if the Children property initially contained at least one element. In the other case it is hidden. The problem starts when the user adds a child control to an empty collection. The GroupBox's visibility is still collapsed. The same problem occurs when the last child control is removed from the collection. The GroupBox is still visible. Another symptom is that the HideEmptyEnumerationConverter converter does not get called. Adding/removing child controls to non empty collections works as expected. Whats wrong with the following binding? Obviously it works once but does not get updated, although the collection I am binding to is of type ObservableCollection. <!-- Converter for hiding empty enumerations --> <Common:HideEmptyEnumerationConverter x:Key="hideEmptyEnumerationConverter"/> <!--- ... ---> <ControlTemplate TargetType="{x:Type MyControl}"> <!-- ... other stuff that works ... --> <!-- Child components --> <GroupBox Header="Children" Visibility="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=Children, Converter={StaticResource hideEmptyEnumerationConverter}}"> <ItemsControl ItemsSource="{TemplateBinding Children}"/> </GroupBox> </ControlTemplate> . [ValueConversion(typeof (IEnumerable), typeof (Visibility))] public class HideEmptyEnumerationConverter : IValueConverter { #region IValueConverter Members public object Convert(object value, Type targetType, object parameter, CultureInfo culture) { int itemCount = ((IEnumerable) value).Cast<object>().Count(); return itemCount == 0 ? Visibility.Collapsed : Visibility.Visible; } public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) { throw new NotImplementedException(); } #endregion } Another, more general question: How do you guys debug bindings? Found this (http://bea.stollnitz.com/blog/?p=52) but still I find it very hard to do. I am glad for any help or suggestion.

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  • How Do I Prevent Rails From Treating Updated Nested Attributes Differently From New Nested Attribute

    - by James
    I am using rails3 beta3 and couchdb via couchrest. I am not using active record. I want to add multiple "Sections" to a "Guide" and add and remove sections dynamically via a little javascript. I have looked at all the screencasts by Ryan Bates and they have helped immensely. The only difference is that I want to save all the sections as an array of sections instead of individual sections. Basically like this: "sections" => [{"title" => "Foo1", "content" => "Bar1"}, {"title" => "Foo2", "content" => "Bar2"}] So, basically I need the params hash to look like that when the form is submitted. When I create my form I am doing the following: <%= form_for @guide, :url => { :action => "create" } do |f| %> <%= render :partial => 'section', :collection => @guide.sections %> <%= f.submit "Save" %> <% end %> And my section partial looks like this: <%= fields_for "sections[]", section do |guide_section_form| %> <%= guide_section_form.text_field :section_title %> <%= guide_section_form.text_area :content, :rows => 3 %> <% end %> Ok, so when I create the guide with sections, it is working perfectly as I would like. The params hash is giving me a sections array just like I would want. The problem comes when I want edit guide/sections and save them again because rails is inserting the id of the guide in the id and name of each form field, which is screwing up the params hash on form submission. Just to be clear, here is the raw form output for a new resource: <input type="text" size="30" name="sections[][section_title]" id="sections__section_title"> <textarea rows="3" name="sections[][content]" id="sections__content" cols="40"></textarea> And here is what it looks like when editing an existing resource: <input type="text" value="Foo1" size="30" name="sections[cd2f2759895b5ae6cb7946def0b321f1][section_title]" id="sections_cd2f2759895b5ae6cb7946def0b321f1_section_title"> <textarea rows="3" name="sections[cd2f2759895b5ae6cb7946def0b321f1][content]" id="sections_cd2f2759895b5ae6cb7946def0b321f1_content" cols="40">Bar1</textarea> How do I force rails to always use the new resource behavior and not automatically add the id to the name and value. Do I have to create a custom form builder? Is there some other trick I can do to prevent rails from putting the id of the guide in there? I have tried a bunch of stuff and nothing is working. Thanks in advance!

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  • Control third check box based on the state of the first two using jquery

    - by Moj
    I have three check boxes and need to disable the third if either and/or of the other two are checked. I'm sure there's a easier way than what I have currently. It's turning into what I believe is a mess and I'm hoping that someone with more jquery knowledge can shine the light here. Here's my simple html form: <html> <head> <script type="text/javascript" src="jquery.js"></script> <script src="custom.js" type="text/javascript"></script> </head> <body> <input type="checkbox" class="class" id="1">First <input type="checkbox" class="class" id="2">Second <input type="checkbox" class="class" id="3">Third </body> </html> Here's the javascript I'm using with jquery v1.4.2 jQuery(document).ready(function() { // watches the events of all checkboxes $(":checkbox").click(function(){ if( // if both 1 and 2 are checked we don't want to enable Third until both are unchecked. (($('#1:checkbox').attr('checked'))&&($('#2:checkbox').attr('checked')))|| ((($('#1:checkbox').attr('checked'))&&($('#2:checkbox').attr('checked')))&&($('#3:checkbox').attr('disabled')))|| ((($('#1:checkbox').attr('checked'))||($('#2:checkbox').attr('checked')))&&($('#3:checkbox').attr('disabled'))) ){ // we don't want to do anything in the above events } else if( // handles the First check box (($('#1:checkbox').attr('checked'))||(!$('#1:checkbox').attr('checked')))|| // handles the Second check box (($('#2:checkbox').attr('checked'))||(!$('#2:checkbox').attr('checked'))) ){ // call the disableThird function disableThird(); } }); // handles enabling and disabling the Third checkbox function disableThird(){ var $checkbox = $('#3:checkbox'); $checkbox.attr('disabled', !$checkbox.attr('disabled')); }; }); For some reason checking #3 will disable it's self. I don't understand why. This works, but one of the requirements is that a non programmer should be able to edit and maintain this. Ideally it'd be great if he could just add new check boxes to the html and it would work. The class for these are define and as far as I know can't be changed. The last check box in the list of check boxes will disable if any of the ones above are selected. Like wise if the last check box is selected, it will disable all the ones above it. I haven't even begun writing and testing that portion as this is quickly becoming too complicated for a non programmer to handle. I myself am more of a PHP coder than a js, let alone jquery, coder. Any help would be greatly appreciated.

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  • Getting problem in accessing web cam.

    - by Chetan
    Hi... I have written code in Java to access web cam,and to save image... I am getting following exceptions : Exception in thread "main" java.lang.NullPointerException at SwingCapture.(SwingCapture.java:40) at SwingCapture.main(SwingCapture.java:66) how to remove this exceptions. here is the code: import javax.swing.*; import javax.swing.event.; import java.io.; import javax.media.; import javax.media.format.; import javax.media.util.; import javax.media.control.; import javax.media.protocol.; import java.util.; import java.awt.; import java.awt.image.; import java.awt.event.; import com.sun.image.codec.jpeg.; public class SwingCapture extends Panel implements ActionListener { public static Player player = null; public CaptureDeviceInfo di = null; public MediaLocator ml = null; public JButton capture = null; public Buffer buf = null; public Image img = null; public VideoFormat vf = null; public BufferToImage btoi = null; public ImagePanel imgpanel = null; public SwingCapture() { setLayout(new BorderLayout()); setSize(320,550); imgpanel = new ImagePanel(); capture = new JButton("Capture"); capture.addActionListener(this); String str1 = "vfw:iNTEX IT-308 WC:0"; String str2 = "vfw:Microsoft WDM Image Capture (Win32):0"; di = CaptureDeviceManager.getDevice(str2); ml = di.getLocator(); try { player = Manager.createRealizedPlayer(ml); player.start(); Component comp; if ((comp = player.getVisualComponent()) != null) { add(comp,BorderLayout.NORTH); } add(capture,BorderLayout.CENTER); add(imgpanel,BorderLayout.SOUTH); } catch (Exception e) { e.printStackTrace(); } } public static void main(String[] args) { Frame f = new Frame("SwingCapture"); SwingCapture cf = new SwingCapture(); f.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { playerclose(); System.exit(0);}}); f.add("Center",cf); f.pack(); f.setSize(new Dimension(320,550)); f.setVisible(true); } public static void playerclose() { player.close(); player.deallocate(); } public void actionPerformed(ActionEvent e) { JComponent c = (JComponent) e.getSource(); if (c == capture) { // Grab a frame FrameGrabbingControl fgc = (FrameGrabbingControl) player.getControl("javax.media.control.FrameGrabbingControl"); buf = fgc.grabFrame(); // Convert it to an image btoi = new BufferToImage((VideoFormat)buf.getFormat()); img = btoi.createImage(buf); // show the image imgpanel.setImage(img); // save image saveJPG(img,"\test.jpg"); } } class ImagePanel extends Panel { public Image myimg = null; public ImagePanel() { setLayout(null); setSize(320,240); } public void setImage(Image img) { this.myimg = img; repaint(); } public void paint(Graphics g) { if (myimg != null) { g.drawImage(myimg, 0, 0, this); } } } public static void saveJPG(Image img, String s) { BufferedImage bi = new BufferedImage(img.getWidth(null), img.getHeight(null), BufferedImage.TYPE_INT_RGB); Graphics2D g2 = bi.createGraphics(); g2.drawImage(img, null, null); FileOutputStream out = null; try { out = new FileOutputStream(s); } catch (java.io.FileNotFoundException io) { System.out.println("File Not Found"); } JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out); JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bi); param.setQuality(0.5f,false); encoder.setJPEGEncodeParam(param); try { encoder.encode(bi); out.close(); } catch (java.io.IOException io) { System.out.println("IOException"); } } }

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  • How to get GWT 2.0 and Restlet 2.0 to play nice

    - by Holograham
    Hello, I am having trouble getting Restlet to play nice with GWT in the same project. I have been trying the examples from Restlets website to no avail I am using Eclipse, Maven2 plugin, GWT, and Restlet GWT. I have never used server side code in this GWT project before and I know there is some custom setup involved. I am deploying locally for the time being using the built in Jetty in GWT Hosted Mode. I can get my front end to display but my back end is not executing. I did add this to my web.xml file which is from the example (for the time being I am trying to drop the example into my project). <servlet> <servlet-name>adapter</servlet-name> <servlet-class>org.restlet.ext.gwt.GwtShellServletWrapper</servlet-class> <init-param> <param-name>org.restlet.application</param-name> <param-value>org.restlet.example.gwt.server.TestServerApplication</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>adapter</servlet-name> <url-pattern>/*</url-pattern> </servlet-mapping> I did notice that my web.xml file is located separately from my war deployment directory. My project dir structure is setup as follows. Project Root src/main/java src/main/resources src/main/test JRE Maven Dependecies GWT SDK src main webapp WEB-INF web.xml target war <my project dir> WEB-INF lib pom.xml So there is no web.xml under my war files WEB-INF directory. I am new to this type of application so it is most likely a matter of me not understanding the directory structure and how my GWT project is compiling into these dirs. Any help is appreciated! If I need to provide any more info let me know. Thanks

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  • ModalPopup CodeBehind Function Wait For User Response

    - by Snave
    I have set up a function which returns an enum of the button that the user clicked in the ModalPopup. I have a variable of type enum to store which button the user clicks in the button click event. In this function, I call the ModalPopupExtender's Show() method. My problem is, the function finishes out and returns the default enum (which is "none" since no button was clicked yet) before the ModalPopup can be shown and store which button the user clicks. So without changing the function to a method and using a different way to store the user's button click, how can I pause the function after the Show() method of the MPE has been called and wait for the user to click a button? Edit(11/20/2009): Clarification: On the aspx page, I include a ScriptManager, PlaceHolder, and an asp:Button with a codebehind click event. What I want is to click the button, then in the click event handler, I want to call a custom static class function that returns a variable. One of the arguments it takes is the PlaceHolder. The function creates all the necessary controls in the PlaceHolder needed to display a ModalPopup. It calls the created ModalPopupExtender's Show() method. What should happen: At this point is the ModalPopup gets displayed, the user clicks a button, that button's event handler fires, the button sets a variable indicating that it was clicked, it then calls the ModalPopupExtender's .Hide() method, and then the function returns the variable that indicates which button was clicked. We then return to the event handler from the original button that was clicked and the programmer can then perform some logic based on what variable was returned. Crux: When the ModalPopupExtender's .Show() method gets called, it does not display the ModalPopup until AFTER the function returns a default variable (because no button was clicked yet) and after the event handler from the original button that was clicked ends. What I need: After the ModalPopupExtender's .Show() method is called, I need the ModalPopup to get displayed immediately and I need the function to wait for a button click to be made from the ModalPopup. My thoughts: Some PostBack needs to be made to the page telling it to update and display the ModalPopup Panel. Then maybe a while loop can be run in the function that waits for a button to be clicked in the ModalPopup.

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  • how can i overriding the inbound message validation with cxf?

    - by user1648330
    when i input a non-numeric content to a Integer types of field, i have got a fault mesasge 'Not a number: 0.012A'. How to do ability to in prior to the Unmarshal for schema validation and output custom error messages? I used cxf 2.6.1 and also configuration with <entry key="schema-validation-enabled" value="true" ></entry> in cxf-spring.xml. java.lang.RuntimeException: Not a number: 0.012A at com.jiemai.jmservice.handlers.ValidationEventHandler.handleEvent(ValidationEventHandler.java:19) at org.apache.cxf.jaxb.io.DataReaderImpl$WSUIDValidationHandler.handleEvent(DataReaderImpl.java:78) at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallingContext.handleEvent(UnmarshallingContext.java:655) at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallingContext.handleError(UnmarshallingContext.java:691) at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallingContext.handleError(UnmarshallingContext.java:687) at com.sun.xml.bind.v2.runtime.unmarshaller.Loader.handleParseConversionException(Loader.java:271) at com.sun.xml.bind.v2.runtime.unmarshaller.LeafPropertyLoader.text(LeafPropertyLoader.java:69) at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallingContext.text(UnmarshallingContext.java:514) at com.sun.xml.bind.v2.runtime.unmarshaller.InterningXmlVisitor.text(InterningXmlVisitor.java:93) at com.sun.xml.bind.v2.runtime.unmarshaller.StAXStreamConnector.processText(StAXStreamConnector.java:338) at com.sun.xml.bind.v2.runtime.unmarshaller.StAXStreamConnector.handleEndElement(StAXStreamConnector.java:216) at com.sun.xml.bind.v2.runtime.unmarshaller.StAXStreamConnector.bridge(StAXStreamConnector.java:185) at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:370) at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:349) at org.apache.cxf.jaxb.JAXBEncoderDecoder.doUnmarshal(JAXBEncoderDecoder.java:784) at org.apache.cxf.jaxb.JAXBEncoderDecoder.access$100(JAXBEncoderDecoder.java:97) at org.apache.cxf.jaxb.JAXBEncoderDecoder$1.run(JAXBEncoderDecoder.java:812) at java.security.AccessController.doPrivileged(Native Method) at org.apache.cxf.jaxb.JAXBEncoderDecoder.unmarshall(JAXBEncoderDecoder.java:810) at org.apache.cxf.jaxb.JAXBEncoderDecoder.unmarshall(JAXBEncoderDecoder.java:644) at org.apache.cxf.jaxb.io.DataReaderImpl.read(DataReaderImpl.java:157) at org.apache.cxf.interceptor.DocLiteralInInterceptor.handleMessage(DocLiteralInInterceptor.java:108) at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:262) at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:122) at org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:211) at org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:213) at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:193) at org.apache.cxf.transport.servlet.CXFNonSpringServlet.invoke(CXFNonSpringServlet.java:129) at org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:187) at org.apache.cxf.transport.servlet.AbstractHTTPServlet.doPost(AbstractHTTPServlet.java:110) at javax.servlet.http.HttpServlet.service(HttpServlet.java:710) at org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:166) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Unknown Source)

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  • Paypal IPN Handler for Cart

    - by kimmothy16
    Hey everyone! I'm using a Paypal add to cart button for a simple ecommerce website. I had a Paypal IPN handler written in PHP that was successfully working for 'Buy it Now' buttons and purchasing one item at a time. I would run a database query each time to update the store's inventory to reflect the purchase. Now I'm upgrading this store to a 'cart' version so people could check out with multiple items at a time. Would anyone be able to tell me, in general, how my IPN handler would need to be altered to accommodate this? I'm unsure of what a response from Paypal looks like for a cart purchase as opposed to a buy it now purchase. Thanks, any help or examples of working IPN cart scripts would be very appreciated! My current code is below.. // Paypal POSTs HTML FORM variables to this page // we must post all the variables back to paypal exactly unchanged and add an extra parameter cmd with value _notify-validate // initialise a variable with the requried cmd parameter $req = 'cmd=_notify-validate'; // go through each of the POSTed vars and add them to the variable foreach ($_POST as $key => $value) { $value = urlencode(stripslashes($value)); $req .= "&$key=$value"; } // post back to PayPal system to validate $header .= "POST /cgi-bin/webscr HTTP/1.0\r\n"; $header .= "Content-Type: application/x-www-form-urlencoded\r\n"; $header .= "Content-Length: " . strlen($req) . "\r\n\r\n"; // In a live application send it back to www.paypal.com // but during development you will want to uswe the paypal sandbox // comment out one of the following lines $fp = fsockopen ('www.sandbox.paypal.com', 80, $errno, $errstr, 30); //$fp = fsockopen ('www.paypal.com', 80, $errno, $errstr, 30); // or use port 443 for an SSL connection //$fp = fsockopen ('ssl://www.paypal.com', 443, $errno, $errstr, 30); if (!$fp) { // HTTP ERROR } else { fputs ($fp, $header . $req); while (!feof($fp)) { $res = fgets ($fp, 1024); if (strcmp ($res, "VERIFIED") == 0) { $item_name = stripslashes($_POST['item_name']); $item_number = $_POST['item_number']; $item_id = $_POST['custom']; $payment_status = $_POST['payment_status']; $payment_amount = $_POST['mc_gross']; //full amount of payment. payment_gross in US $payment_currency = $_POST['mc_currency']; $txn_id = $_POST['txn_id']; //unique transaction id $receiver_email = $_POST['receiver_email']; $payer_email = $_POST['payer_email']; $size = $_POST['option_selection1']; $item_id = $_POST['item_id']; $business = $_POST['business']; if ($payment_status == 'Completed') { // UPDATE THE DATABASE }

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  • Java Copy/Paste org.w3c.dom.Node between two running copies of the same program

    - by Jay
    I have a program that shows a tree representation of an XML file. Using a number of sources online I have Copy/Paste within a single instance of the program working. I am using the system Clipboard. What I need though is to be able to copy a node from one instance of the program and paste to a different instance of the same program. I have tried a number of different options, all resulting in the same behavior. When pasting from within the same application the clipboardContent contains a "transferable" object with the correct data along with an isLocal set to "true". When I perform the copy and then attempt the paste from another instance of the same program running the clipboardContent contains a "flavorsToData" HashMap and "flavors" values, the check for isDataFlavorSupported fails (never hits my custom class that represents the new flavor). I have tried using different values for the requestor object in the getContents() call. Likewise I have tried a few different ClipboardOwners for the setContent() call. Neither seem to change the behavior in any way. I am sorely tempted to convert the node that is being copied back into a textual XML format, and then on the paste convert back to the DOM model, but would rather not if possible. This class is used to define the DataFlavor and transferable object: import java.awt.datatransfer.*; import org.w3c.dom.Node; public class NodeCopyPaste implements Transferable { static public DataFlavor NodeFlavor; private DataFlavor [] supportedFlavors = {NodeFlavor}; public Node aNode; public NodeCopyPaste (Node paraNode) { aNode = paraNode; try { NodeFlavor = new DataFlavor (Class.forName ("org.w3c.dom.Node"), "Node"); } catch (ClassNotFoundException e) { e.printStackTrace (); } } public synchronized DataFlavor [] getTransferDataFlavors () { return (supportedFlavors); } public boolean isDataFlavorSupported (DataFlavor nodeFlavor) { return (nodeFlavor.equals (NodeFlavor)); } public synchronized Object getTransferData (DataFlavor nFlavor) throws UnsupportedFlavorException { if (nFlavor.equals (NodeFlavor)) return (this); else throw new UnsupportedFlavorException (nFlavor); } public void lostOwnership (Clipboard parClipboard, Transferable parTransferable) { } } I define a Clipboard object from the main application screen and then tie in copy and paste handlers for the mouse clicks: During initialization I assign the system clipboard: clippy = Toolkit.getDefaultToolkit().getSystemClipboard(); Copy Handler Node copyNode = ((CLIInfo) node.getUserObject()).DOMNode.cloneNode(true); NodeCopyPaste contents = new NodeCopyPaste(copyNode); clippy.setContents (contents, null); Paste Handler Transferable clipboardContent = clippy.getContents (null); Node clonedNode = null; if ((clipboardContent != null) && (clipboardContent.isDataFlavorSupported (NodeCopyPaste.NodeFlavor))) { try { NodeCopyPaste tempNCP = (NodeCopyPaste) clipboardContent.getTransferData (NodeCopyPaste.NodeFlavor); clonedNode = tempNCP.aNode.cloneNode(true); } catch (Exception e) { e.printStackTrace (); } Thanks!

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  • Best practices concerning view model and model updates with a subset of the fields

    - by Martin
    By picking MVC for developing our new site, I find myself in the midst of "best practices" being developed around me in apparent real time. Two weeks ago, NerdDinner was my guide but with the development of MVC 2, even it seems outdated. It's an thrilling experience and I feel privileged to be in close contact with intelligent programmers daily. Right now I've stumbled upon an issue I can't seem to get a straight answer on - from all the blogs anyway - and I'd like to get some insight from the community. It's about Editing (read: Edit action). The bulk of material out there, tutorials and blogs, deal with creating and view the model. So while this question may not spell out a question, I hope to get some discussion going, contributing to my decision about the path of development I'm to take. My model represents a user with several fields like name, address and email. All the names, in fact, on field each for first name, last name and middle name. The Details view displays all these fields but you can change only one set of fields at a time, for instance, your names. The user expands a form while the other fields are still visible above and below. So the form that is posted back contains a subset of the fields representing the model. While this is appealing to us and our layout concerns, for various reasons, it is to be shunned by serious MVC-developers. I've been reading about some patterns and best practices and it seems that this is not in key with the paradigm of viewmodel == view. Or have I got it wrong? Anyway, NerdDinner dictates using FormCollection och UpdateModel. All the null fields are happily ignored. Since then, the MVC-community has abandoned this approach to such a degree that a bug in MVC 2 was not discovered. UpdateModel does not work without a complete model in your formcollection. The view model pattern receiving most praise seems to be Dedicated view model that contains a custom view model entity and is the only one that my design issue could be made compatible with. It entails a tedious amount of mapping, albeit lightened by the use of AutoMapper and the ideas of Jimmy Bogard, that may or may not be worthwhile. He also proposes a 1:1 relationship between view and view model. In keeping with these design paradigms, I am to create a view and associated view for each of my expanding sets of fields. The view models would each be nearly identical, differing only in the fields which are read-only, the views also containing much repeated markup. This seems absurd to me. In future I may want to be able to display two, more or all sets of fields open simultaneously. I will most attentively read the discussion I hope to spark. Many thanks in advance.

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  • "type not defined" exception with WF4 RC

    - by avi1234
    Hi, I`m gettin the following exception while invoking my workflow (dynamically): The following errors were encountered while processing the workflow tree: 'DynamicActivity': The private implementation of activity '1: DynamicActivity' has the following validation error: Compiler error(s) encountered processing expression "TryCast(simplerule_out,OutputBase2)". Type 'OutputBase2' is not defined. 'DynamicActivity': The private implementation of activity '1: DynamicActivity' has the following validation error: Compiler error(s) encountered processing expression "Res". Type 'OutputBase2' is not defined. 'DynamicActivity': The private implementation of activity '1: DynamicActivity' has the following validation error: Compiler error(s) encountered processing expression "Res". Type 'OutputBase2' is not defined. 'DynamicActivity': The private implementation of activity '1: DynamicActivity' has the following validation error: Compiler error(s) encountered processing expression "New List(Of OutputBase2)". Type 'OutputBase2' is not defined. The workflow is very simple and worked fine on VS 2010 beta 2! All I`m trying to do is to create new list of my abstract custom type "OutputBase2". public class OutputBase2 { public OutputBase2() { } public bool Succeeded { get; set; } } class Example { public void Exec() { ActivityBuilder builder = new ActivityBuilder(); builder.Name = "act1"; var res = new DynamicActivityProperty { Name = "Res", Type = typeof(OutArgument<List<OutputBase2>>), Value = new OutArgument<List<OutputBase2>>() }; builder.Properties.Add(res); builder.Implementation = new Sequence(); ((Sequence)builder.Implementation).Activities.Add(new Assign<List<OutputBase2>> { To = new VisualBasicReference<List<OutputBase2>> { ExpressionText = res.Name }, Value = new VisualBasicValue<List<OutputBase2>>("New List(Of OutputBase2)") }); Activity act = getActivity(builder); var res2 = WorkflowInvoker.Invoke(act); } string getXamlStringFromActivityBuilder(ActivityBuilder activityBuilder) { string xamlString; StringBuilder stringBuilder = new StringBuilder(); System.IO.StringWriter stringWriter = new System.IO.StringWriter(stringBuilder); System.Xaml.XamlSchemaContext xamlSchemaContext = new System.Xaml.XamlSchemaContext(); System.Xaml.XamlXmlWriter xamlXmlWriter = new System.Xaml.XamlXmlWriter(stringWriter, xamlSchemaContext); System.Xaml.XamlWriter xamlWriter = System.Activities.XamlIntegration.ActivityXamlServices.CreateBuilderWriter(xamlXmlWriter); System.Xaml.XamlServices.Save(xamlWriter, activityBuilder); xamlString = stringBuilder.ToString(); return xamlString; } public Activity getActivity(ActivityBuilder t) { string xamlString = getXamlStringFromActivityBuilder(t); System.IO.StringReader stringReader = new System.IO.StringReader(xamlString); Activity activity = System.Activities.XamlIntegration.ActivityXamlServices.Load(stringReader); return activity; } } Thanks!

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  • Reproduce PIPE functionality in IronPython

    - by Muppet Geoff
    Hi, I am hoping some genious out there can help me out with this... I am using sox to merge and resample a group of WAV files, and pipe the output directly to the input of NeroAACEnc for encoding to AAC format. I originally ran the process in a script, which included: sox.exe d:\audio\1.wav d:\audio\2.wav d:\audio\3.wav -c 1 -r 22050 -t wav - | neroAacEnc.exe -q 0.5 -if - -of test.m4a This worked as expected. The '-' in the comand line translates as 'Pipe/redirect input/output (stdin/stdout)' - So Sox pipes to stdout, and NeroAACEnc reads from stdin, the | joins them together. I then migrated the whole solution to Python, and the equivalent command became: from subprocess import call, Popen, PIPE runwav = Popen(['sox.exe', 'd:\audio\1.wav', 'd:\audio\2.wav', 'd:\audio\3.wav', '-c', '1', '-r', '22050', '-t', 'wav', '-'], shell=False, stdout=PIPE) runm4b = call(['neroAacEnc.exe', '-q', '0.5', '-if', '-', '-of', 'test.m4a'], shell=False, stdin=runwav.stdout) This also worked like a charm, exactly as expected. Slightly more convoluted, but hey :) Well now I have to move it to IronPython, and the Subprocess module isn't available (the partial implementation that is, doesn't have Popen/PIPE support - plus it seems silly to add a custom library when there is probably a native alternative). I should mention here, that I opted for IronPython over C#, because I am comfortable with Python now - however, there is a chance of moving it again later to C# native, and I am using IronPython to ease myself into it :) I have no C# or .net experience. So far I have the following equivalent, that sets up the 2 processes: from System.Diagnostics import Process wav = Process() wav.StartInfo.UseShellExecute = False wav.StartInfo.RedirectStandardOutput = True wav.StartInfo.FileName = 'sox.exe' wav.StartInfo.Arguments = 'd:\audio\1.wav d:\audio\2.wav d:\audio\3.wav -c 1 -r 22050 -t wav -' wav.Start() m4b = Process() m4b.StartInfo.UseShellExecute = False m4b.StartInfo.RedirectStandardInput = True m4b.StartInfo.FileName = 'neroAacEnc.exe' m4b.StartInfo.Arguments = '-q 0.5 -if - -of test.m4a' m4b.Start() I know that these 2 processes start (I can see Nero and Sox in the task manager) but what I can't figure out (for the life of me) is how to string the two output/input streams together, as with the previous two solutions. I have searched and searched, so I thought I'd ask! If anyone knows either: How to join the two streams with the same net result as the Python and Commandline versions; or A better way to acheive what I am trying to do. I would be extremely grateful! Many thanks in advance, Geoff P.S. A code sample based off the above would be awesome :) or a specific code example of a similar process that I can easily translate... this has broked my brayne.

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  • List of objects sent over WCF, but null list received?

    - by GONeale
    Hey there, I have an object containing a list of custom objects which I am returning over a response in WCF, however on the receiving end, the list is null? But it contains 112 objects just prior to stepping out of the service on the server. This wasn't always the case, I have seen it return a list. I've just recently upgraded it to use NET TCP bindings, but I can't confirm when I started losing the data or if it was since the conversion from wsHttpBinding to netTcpBinding as it moved along with about four other services. I have looked on the WCF Service messages and trace file and also the WCF client's messages and trace file, no exceptions reported, and both message logs indicate they are sending the List<T> and for client, receiving the list - very frustrating! It's not a super light array, but not huge either, around 100KB. it has about 12 properties each and as stated 112 items are being sent. I have tried everything I can think of on client and server, note: Client: this.binding = new NetTcpBinding(SecurityMode.None) { MaxReceivedMessageSize = int.MaxValue, ReaderQuotas = { MaxStringContentLength = int.MaxValue, MaxArrayLength = int.MaxValue } }; ... Server app.config (sorry I have no idea if the quota settings have any bearing on net tcp? I only just added it similar to what I use for wsHttpBinding to test, but still list is null): <netTcpBinding> <binding name="SecurityByNetTcpTransportBinding" sendTimeout="00:03:00" maxReceivedMessageSize="2147483647"> <readerQuotas maxStringContentLength="2147483647" maxArrayLength="2147483647" /> <security mode="None" /> </binding> </netTcpBinding> and something else I tried in my net tcp binding behavior: <dataContractSerializer maxItemsInObjectGraph="2147483647" /> <serviceTimeouts transactionTimeout="05:05:00" /> <serviceThrottling maxConcurrentSessions="400" maxConcurrentInstances="400" maxConcurrentCalls="400"/> I hope somebody can help, I hate 5 steps forward 3 steps backward which always seems to be the case with WCF :P In the interim until I [hopefully] get a response I will now try reducing this array just to see if it's a sizing issue.. Ok, It seems I have bigger problems. Because the list was the only thing I was sending, I thought it was an array issue. I am even setting an int to "25" and it's coming back as 0 - Anybody? I know I must have done something obviously stupid.

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  • Rails 3 and Bootstrap 2.1.0 - can't fix my footer

    - by ExiRe
    I have Rails application with bootstrap 2.1.0 (i use twitter-bootstrap-rails gem for that). But i can't get working footer. It is not visible unless i scroll down the page. I can't get how to fix that. Application.html.haml !!! %html %head %title MyApp = stylesheet_link_tag "application", :media => "all" = javascript_include_tag "application" = csrf_meta_tags %meta{ :name => "viewport", :content => "width=device-width, initial-scale=1.0" } %body %div{ :class => "wrapper" } = render 'layouts/navbar_template' %div{ :class => "container-fluid" } - flash.each do |key, value| = content_tag( :div, value, :class => "alert alert-#{key}" ) %div{ :class => "row-fluid" } %div{:class => "span10"} =yield %div{:class => "span2"} %h2 Test sidebar %footer{ :class => "footer" } = debug(params) if Rails.env.development? bootstrap_and_overrides.css.less @import "twitter/bootstrap/bootstrap"; body { padding-top: 60px; } @import "twitter/bootstrap/responsive"; // Set the correct sprite paths @iconSpritePath: asset-path('twitter/bootstrap/glyphicons-halflings.png'); @iconWhiteSpritePath: asset-path('twitter/bootstrap/glyphicons-halflings-white.png'); // Set the Font Awesome (Font Awesome is default. You can disable by commenting below lines) // Note: If you use asset_path() here, your compiled boostrap_and_overrides.css will not // have the proper paths. So for now we use the absolute path. @fontAwesomeEotPath: '/assets/fontawesome-webfont.eot'; @fontAwesomeWoffPath: '/assets/fontawesome-webfont.woff'; @fontAwesomeTtfPath: '/assets/fontawesome-webfont.ttf'; @fontAwesomeSvgPath: '/assets/fontawesome-webfont.svg'; // Font Awesome @import "fontawesome"; // Your custom LESS stylesheets goes here // // Since bootstrap was imported above you have access to its mixins which // you may use and inherit here // // If you'd like to override bootstrap's own variables, you can do so here as well // See http://twitter.github.com/bootstrap/less.html for their names and documentation // // Example: // @linkColor: #ff0000; //MY CSS IS HERE. html, body { height: 100%; } footer { color: #666; background: #F5F5F5; padding: 17px 0 18px 0; border-top: 1px solid #000; } footer a { color: #999; } footer a:hover { color: #efefef; } .wrapper { min-height: 100%; height: auto !important; height: 10px; margin-bottom: -10px; }

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  • In Protobuf-net how can I pass an array of type object with objects of different types inside, knowi

    - by cloudraven
    I am trying to migrate existing code that uses XmlSerializer to protobuf-net due to the increased performance it offers, however I am having problems with this specific case. I have an object[] that includes parameters that are going to be sent to a remote host (sort of a custom mini rpc facility). I know the set of types from which these parameters can be, but I cannot tell in advance in which order they are going to be sent. I have three constraints. The first is that I am running in Compact Framework, so I need something that works there. Second, as I mentioned performance is a big concern (on the serializing side) so I would rather avoid using a lot of reflection there if possible. And the most important is that I care about the order in which this parameters were sent. Using XmlSerializer it was easy just adding XmlInclude, but for fields there is nothing equivalent as far as I know in Protobuf-net. So, is there a way to do this? Here is a simplified example. [Serializable] [XmlInclude(typeof(MyType1)), XmlInclude(typeof(MyType2)), XmlInclude(typeof(MyType3)) public class Message() { public object[] parameters; public Message(object[] parms) { parameters = parms; } } Message m = new Message(new object[] {MyType1(), 33, "test", new MyType3(), new MyType3()}); MemoryStream ms = new MemoryStream(); XmlSerializer xml = new XmlSerializer(typeof(Message)); xml.Serialize(ms,xml); That will just work with XmlSerializer, but if I try to convert it to protobuf-net I will get a "No default encoding for Object" message. The best I came up with is to use generics and [ProtoInclude] as seen in this example. Since I can have different object types within the array this doesn't quite make it. I added a generic List for each potential type and a property with [ProtoIgnore] with type object[] to add them and get them. I have to use reflection when adding them (to know in which array to put each item) which is not desirable and I still can't preserve the ordering as I just extract all the items on each list one by one and put them into a new object[] array on the property get. I wonder if there is a way to accomplish this?

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  • Trouble connecting to vsftpd on ubuntu server

    - by littleK
    I have installed Ubuntu Server 10.10 and I am using it to host a domain that I have. I am trying to set up FTP for the server, but I am running into some problems. I have successfully installed vsFTPd and I have opened up ports 20, 21 on my firewall. In my vsFTPd configuration, I have enabled SSL. Every time I try to connect to my server via FTP, I receive a "Connection Refused" error. I have had a little more success with SSL disabled, however the connection process will time out after the LIST command (but it does accept my authentication). Here is my vsFTPd configuration, the SSL stuff is at the bottom: # Example config file /etc/vsftpd.conf # # The default compiled in settings are fairly paranoid. This sample file # loosens things up a bit, to make the ftp daemon more usable. # Please see vsftpd.conf.5 for all compiled in defaults. # # READ THIS: This example file is NOT an exhaustive list of vsftpd options. # Please read the vsftpd.conf.5 manual page to get a full idea of vsftpd's # capabilities. # # # Run standalone? vsftpd can run either from an inetd or as a standalone # daemon started from an initscript. listen=YES # # Run standalone with IPv6? # Like the listen parameter, except vsftpd will listen on an IPv6 socket # instead of an IPv4 one. This parameter and the listen parameter are mutually # exclusive. #listen_ipv6=YES # # Allow anonymous FTP? (Disabled by default) anonymous_enable=NO # # Uncomment this to allow local users to log in. local_enable=YES # # Uncomment this to enable any form of FTP write command. write_enable=YES # # Default umask for local users is 077. You may wish to change this to 022, # if your users expect that (022 is used by most other ftpd's) #local_umask=022 # # Uncomment this to allow the anonymous FTP user to upload files. This only # has an effect if the above global write enable is activated. Also, you will # obviously need to create a directory writable by the FTP user. #anon_upload_enable=YES # # Uncomment this if you want the anonymous FTP user to be able to create # new directories. #anon_mkdir_write_enable=YES # # Activate directory messages - messages given to remote users when they # go into a certain directory. dirmessage_enable=YES # # If enabled, vsftpd will display directory listings with the time # in your local time zone. The default is to display GMT. The # times returned by the MDTM FTP command are also affected by this # option. use_localtime=YES # # Activate logging of uploads/downloads. xferlog_enable=YES # # Make sure PORT transfer connections originate from port 20 (ftp-data). connect_from_port_20=YES # # If you want, you can arrange for uploaded anonymous files to be owned by # a different user. Note! Using "root" for uploaded files is not # recommended! #chown_uploads=YES #chown_username=whoever # # You may override where the log file goes if you like. The default is shown # below. #xferlog_file=/var/log/vsftpd.log # # If you want, you can have your log file in standard ftpd xferlog format. # Note that the default log file location is /var/log/xferlog in this case. #xferlog_std_format=YES # # You may change the default value for timing out an idle session. #idle_session_timeout=600 # # You may change the default value for timing out a data connection. #data_connection_timeout=120 # # It is recommended that you define on your system a unique user which the # ftp server can use as a totally isolated and unprivileged user. #nopriv_user=ftpsecure # # Enable this and the server will recognise asynchronous ABOR requests. Not # recommended for security (the code is non-trivial). Not enabling it, # however, may confuse older FTP clients. #async_abor_enable=YES # # By default the server will pretend to allow ASCII mode but in fact ignore # the request. Turn on the below options to have the server actually do ASCII # mangling on files when in ASCII mode. # Beware that on some FTP servers, ASCII support allows a denial of service # attack (DoS) via the command "SIZE /big/file" in ASCII mode. vsftpd # predicted this attack and has always been safe, reporting the size of the # raw file. # ASCII mangling is a horrible feature of the protocol. #ascii_upload_enable=YES #ascii_download_enable=YES # # You may fully customise the login banner string: #ftpd_banner=Welcome to blah FTP service. # # You may specify a file of disallowed anonymous e-mail addresses. Apparently # useful for combatting certain DoS attacks. #deny_email_enable=YES # (default follows) #banned_email_file=/etc/vsftpd.banned_emails # # You may restrict local users to their home directories. See the FAQ for # the possible risks in this before using chroot_local_user or # chroot_list_enable below. #chroot_local_user=YES # # You may specify an explicit list of local users to chroot() to their home # directory. If chroot_local_user is YES, then this list becomes a list of # users to NOT chroot(). #chroot_local_user=YES #chroot_list_enable=YES # (default follows) #chroot_list_file=/etc/vsftpd.chroot_list # # You may activate the "-R" option to the builtin ls. This is disabled by # default to avoid remote users being able to cause excessive I/O on large # sites. However, some broken FTP clients such as "ncftp" and "mirror" assume # the presence of the "-R" option, so there is a strong case for enabling it. #ls_recurse_enable=YES # # Debian customization # # Some of vsftpd's settings don't fit the Debian filesystem layout by # default. These settings are more Debian-friendly. # # This option should be the name of a directory which is empty. Also, the # directory should not be writable by the ftp user. This directory is used # as a secure chroot() jail at times vsftpd does not require filesystem # access. secure_chroot_dir=/var/run/vsftpd/empty # # This string is the name of the PAM service vsftpd will use. pam_service_name=vsftpd # # This option specifies the location of the RSA certificate to use for SSL # encrypted connections. rsa_cert_file=/etc/ssl/private/vsftpd.pem # SSL ssl_enable=YES allow_anon_ssl=NO force_local_data_ssl=YES force_local_logins_ssl=YES ssl_tlsv1=YES ssl_sslv2=YES ssl_sslv3=YES Thanks!

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  • AvalonDock + UserControl + DataGrid + ContextMenu command routing issue

    - by repka
    I have this kind of layout: <Window x:Class="DockAndMenuTest.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:ad="clr-namespace:AvalonDock;assembly=AvalonDock" Title="MainWindow" Height="350" Width="525"> <ad:DockingManager> <ad:DocumentPane> <ad:DockableContent Title="Doh!"> <UserControl> <UserControl.CommandBindings> <CommandBinding Command="Zoom" Executed="ExecuteZoom" CanExecute="CanZoom"/> </UserControl.CommandBindings> <DataGrid Name="_evilGrid"> <DataGrid.Resources> <Style TargetType="DataGridRow"> <Setter Property="ContextMenu"> <Setter.Value> <ContextMenu> <MenuItem Command="Zoom"/> </ContextMenu> </Setter.Value> </Setter> </Style> </DataGrid.Resources> </DataGrid> </UserControl> </ad:DockableContent> </ad:DocumentPane> </ad:DockingManager> </Window> Briefly: ContextMenu is set for each DataGridRow of DataGrid inside UserControl, which in its turn is inside DockableContent of AvalonDock. Code-behind is trivial as well: public partial class MainWindow { public MainWindow() { InitializeComponent(); _evilGrid.ItemsSource = new[] { Tuple.Create(1, 2, 3), Tuple.Create(4, 4, 3), Tuple.Create(6, 7, 1), }; } private void ExecuteZoom(object sender, ExecutedRoutedEventArgs e) { MessageBox.Show("zoom !"); } private void CanZoom(object sender, CanExecuteRoutedEventArgs e) { e.CanExecute = true; } } So here's the problem: right-clicking on the selected row (if it it was selected before the right click) my command comes out disabled. The command is "Zoom" in this case, but can be any other, including a custom one. If I get rid of either docking or UserControl around my grid there are no problems. ListBox doesn't have this issue either. So I don't know what's at fault here. SNOOP shows that in cases when this propagation fails, instead of UserControl, CanExecute is handled by PART_ShowContextMenuButton (Button), which is part of docking header. I've had other issues with UI command propagation within UserControls hosted inside AvalonDock, but this one is the easiest to reproduce.

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  • I get EXC_BAD_ACCESS when MaxConcurrentOperationCount > 1

    - by kudorgyozo
    Hello i am using NSOperationQueue to download images in the background. I have created a custom NSOperation to download the images. I put the images in table cells. The problem is if I do [operationQueue setMaxConcurrentOperationCount: 10] and i scroll down several cells the program crashes with EXC_BAD_ACCESS. Every time it crashes at the same place in the table. There are 3 cells one after the other which are for the same company and have the same logo so basically it should download the images 3 times. Every other time it works fine. - (void) main { NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; NSURL *url = [[NSURL alloc] initWithString:self.imageURL]; debugLog(@"downloading image: %@", self.imageURL); //NSError *error = nil; NSData *data = [[NSData alloc] initWithContentsOfURL:url]; [url release]; UIImage *image = [[UIImage alloc] initWithData:data]; [data release]; if (image) { if (image.size.width != ICONWIDTH && image.size.height != ICONHEIGHT) { UIImage *resizedImage; CGSize itemSize = CGSizeMake(ICONWIDTH, ICONHEIGHT); UIGraphicsBeginImageContext(itemSize); CGRect imageRect = CGRectMake(0.0, 0.0, itemSize.width, itemSize.height); [image drawInRect:imageRect]; resizedImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); self.theImage = resizedImage; } else { self.theImage = image; } [image release]; } [delegate didFinishDownloadingImage: self]; [pool release]; } This is how i handle downloading the images. If i comment out [delegate didFinishDownloadingImage: self]; in the function above it doesn't crash but of course it is useless. -(void) didFinishDownloadingImage:(ImageDownloadOperation *) imageDownloader { [self performSelectorOnMainThread: @selector(handleDidFinishDownloadingImage:) withObject: imageDownloader waitUntilDone: FALSE]; } -(void) handleDidFinishDownloadingImage:(ImageDownloadOperation *)imageDownloadOperation { NSArray *visiblePaths = [self.myTableView indexPathsForVisibleRows]; CompanyImgDownloaderState *stateObject = (CompanyImgDownloaderState *)[imageDownloadOperation stateObject]; if ([visiblePaths containsObject: stateObject.indexPath]) { //debugLog(@"didFinishDownloadingImage %@ %@", imageDownloader.theImage); UITableViewCell *cell = [self.myTableView cellForRowAtIndexPath: stateObject.indexPath]; UIImageView *imageView = (UIImageView *)[cell viewWithTag: 1]; if (imageDownloadOperation.theImage) { imageView.image = imageDownloadOperation.theImage; stateObject.company.icon = imageDownloadOperation.theImage; } else { imageView.image = [(TestWebServiceAppDelegate *)[[UIApplication sharedApplication] delegate] getCylexIcon]; stateObject.company.icon = [(TestWebServiceAppDelegate *)[[UIApplication sharedApplication] delegate] getCylexIcon]; } } }

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  • How to create a Uri instance parsed with GenericUriParserOptions.DontCompressPath

    - by Andrew Arnott
    When the .NET System.Uri class parses strings it performs some normalization on the input, such as lower-casing the scheme and hostname. It also trims trailing periods from each path segment. This latter feature is fatal to OpenID applications because some OpenIDs (like those issued from Yahoo) include base64 encoded path segments which may end with a period. How can I disable this period-trimming behavior of the Uri class? Registering my own scheme using UriParser.Register with a parser initialized with GenericUriParserOptions.DontCompressPath avoids the period trimming, and some other operations that are also undesirable for OpenID. But I cannot register a new parser for existing schemes like HTTP and HTTPS, which I must do for OpenIDs. Another approach I tried was registering my own new scheme, and programming the custom parser to change the scheme back to the standard HTTP(s) schemes as part of parsing: public class MyUriParser : GenericUriParser { private string actualScheme; public MyUriParser(string actualScheme) : base(GenericUriParserOptions.DontCompressPath) { this.actualScheme = actualScheme.ToLowerInvariant(); } protected override string GetComponents(Uri uri, UriComponents components, UriFormat format) { string result = base.GetComponents(uri, components, format); // Substitute our actual desired scheme in the string if it's in there. if ((components & UriComponents.Scheme) != 0) { string registeredScheme = base.GetComponents(uri, UriComponents.Scheme, format); result = this.actualScheme + result.Substring(registeredScheme.Length); } return result; } } class Program { static void Main(string[] args) { UriParser.Register(new MyUriParser("http"), "httpx", 80); UriParser.Register(new MyUriParser("https"), "httpsx", 443); Uri z = new Uri("httpsx://me.yahoo.com/b./c.#adf"); var req = (HttpWebRequest)WebRequest.Create(z); req.GetResponse(); } } This actually almost works. The Uri instance reports https instead of httpsx everywhere -- except the Uri.Scheme property itself. That's a problem when you pass this Uri instance to the HttpWebRequest to send a request to this address. Apparently it checks the Scheme property and doesn't recognize it as 'https' because it just sends plaintext to the 443 port instead of SSL. I'm happy for any solution that: Preserves trailing periods in path segments in Uri.Path Includes these periods in outgoing HTTP requests. Ideally works with under ASP.NET medium trust (but not absolutely necessary).

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  • How to correctly use ABPersonViewController with ABPeoplePickerNavigationController to view Contact

    - by Maha
    I'm attempting to add a feature to my app that allows the user to select a contact from an ABPeoplePickerNavigationController, which then displays an ABPersonViewController corresponding to the contact they picked. At that point, I want the user to be able to click on a contact's phone number and have my app respond with custom behavior. I've got the ABPeoplePickerNavigationController working fine, but I'm running into a problem displaying the ABPersonViewController. I can get the ABPersonViewController to animate onto the screen just fine, but it only displays the contact's photo, name, and company name. None of the contact's other fields are displayed. I'm using the 'displayedProperties' element in the ABPersonViewController to tell the program to display phone numbers. This creates some strange behavior; when I select a contact that has no phone numbers assigned, the contact shows up with "No Phone Numbers" written in the background (as you'd expect), but when selecting a contact that does have a phone number, all I get is a blank contact page (without the "No Phone Numbers" text). Here's the method in my ABPeoplePickerNavigationController delegate class that I'm using to create my PersonViewController class, which implements the ABPersonViewController interface: - (BOOL) peoplePickerNavigationController:(ABPeoplePickerNavigationController *)peoplePicker shouldContinueAfterSelectingPerson:(ABRecordRef)person { BOOL returnState = NO; PersonViewController *personView = [[PersonViewController alloc] init]; [personView displayContactInfo:person]; [peoplePicker pushViewController:personView animated:YES]; [personView release]; return returnState; } Here's my PersonViewController.h header file: #import <UIKit/UIKit.h> #import <Foundation/Foundation.h> #import <AddressBookUI/AddressBookUI.h> @interface PersonViewController : UIViewController <ABPersonViewControllerDelegate> { } - (void) displayContactInfo: (ABRecordRef)person; @end Finally, here's my PersonViewController.m that's creating the ABPersonViewController to view the selected contact: #import "PersonViewController.h" @implementation PersonViewController - (void) displayContactInfo: (ABRecordRef)person { ABPersonViewController *personController = [[ABPersonViewController alloc] init]; personController.personViewDelegate = self; personController.allowsEditing = NO; personController.displayedPerson = person; personController.addressBook = ABAddressBookCreate(); personController.displayedProperties = [NSArray arrayWithObjects: [NSNumber numberWithInt:kABPersonPhoneProperty], nil]; [self setView:personController.view]; [[self navigationController] pushViewController:personController animated:YES]; [personController release]; } - (BOOL) personViewController:(ABPersonViewController*)personView shouldPerformDefaultActionForPerson:(ABRecordRef)person property:(ABPropertyID)property identifier:(ABMultiValueIdentifier)identifierForValue { return YES; } @end Does anyone have any idea as to why I'm seeing this blank Contact screen instead of one with clickable phone number fields?

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