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// Licensed under the MIT License.
using System;
using System.ComponentModel;
using System.Diagnostics.CodeAnalysis;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Input;
namespace Microsoft.Management.UI.Internal
{
/// <content>
/// Partial class implementation for ListOrganizerItem control.
/// </content>
[SuppressMessage("Microsoft.MSInternal", "CA903:InternalNamespaceShouldNotContainPublicTypes")]
public partial class ListOrganizerItem : Control
{
private string startingText;
private FrameworkElement templatedParent;
/// <summary>
/// Creates a new instance of the ListOrganizerItem class.
/// </summary>
public ListOrganizerItem()
{
// empty
}
/// <summary>
/// Gets a value indicating whether the item is in edit mode.
/// </summary>
public bool IsInEditMode
{
get
{
return (this.renameButton != null) ? this.renameButton.IsChecked.Value : false;
}
}
/// <summary>
/// Selects the current item.
/// </summary>
public void Select()
{
if (!this.IsLoaded)
{
this.Loaded += this.ListOrganizerItem_Loaded_SelectItem;
this.ApplyTemplate();
return;
}
CommandHelper.ExecuteCommand(this.linkButton.Command, this.linkButton.CommandParameter, this.linkButton.CommandTarget);
}
/// <summary>
/// Allows modification of the item.
/// </summary>
public void Rename()
{
this.renameButton.IsChecked = true;
}
/// <summary>
/// Deletes the item.
/// </summary>
public void Delete()
{
CommandHelper.ExecuteCommand(this.deleteButton.Command, this.deleteButton.CommandParameter, this.deleteButton.CommandTarget);
}
/// <summary>
/// Provides class handling for the KeyDown routed event that
/// occurs when the user presses a key while this control has focus.
/// </summary>
/// <param name="e">The event data.</param>
protected override void OnKeyDown(KeyEventArgs e)
{
base.OnKeyDown(e);
if (this.IsInEditMode)
{
return;
}
switch (e.Key)
{
case Key.Insert:
this.Rename();
e.Handled = true;
break;
case Key.Delete:
this.Delete();
e.Handled = true;
break;
case Key.Enter:
case Key.Space:
this.Select();
e.Handled = true;
break;
default:
break;
}
}
private void TemplatedParent_OnKeyDown(object sender, KeyEventArgs e)
{
this.OnKeyDown(e);
}
private void ListOrganizerItem_Loaded_SelectItem(object sender, RoutedEventArgs e)
{
this.Loaded -= this.ListOrganizerItem_Loaded_SelectItem;
this.Select();
}
#region EditBox Event Handlers
private void EditBox_LostFocus(object sender, RoutedEventArgs e)
{
this.ChangeFromEditToDisplayMode();
}
private void EditBox_KeyDown(object sender, KeyEventArgs e)
{
switch (e.Key)
{
case Key.Enter:
this.ChangeFromEditToDisplayMode();
e.Handled = true;
break;
case Key.Escape:
this.RevertTextAndChangeFromEditToDisplayMode();
e.Handled = true;
break;
default:
break;
}
}
private void RevertTextAndChangeFromEditToDisplayMode()
{
this.editBox.Text = this.startingText;
this.ChangeFromEditToDisplayMode();
}
private void ChangeFromEditToDisplayMode()
{
// NOTE : This is to resolve a race condition where clicking
// on the rename button causes the edit box to change and
// then have re-toggle.
DependencyObject d = Mouse.DirectlyOver as DependencyObject;
if (d == null || !(this.renameButton.IsAncestorOf(d) && Mouse.LeftButton == MouseButtonState.Pressed))
{
this.renameButton.IsChecked = false;
}
if (!this.IsKeyboardFocusWithin)
{
this.Focus();
}
}
private void EditBox_IsVisibleChanged(object sender, DependencyPropertyChangedEventArgs e)
{
if (this.editBox.IsVisible)
{
this.startingText = this.editBox.Text;
this.editBox.Focus();
this.editBox.SelectAll();
}
}
#endregion EditBox Event Handlers
partial void OnTextContentPropertyNameChangedImplementation(PropertyChangedEventArgs<string> e)
{
this.UpdateTextContentBindings();
}
private void UpdateTextContentBindings()
{
if (!this.IsLoaded)
{
this.Loaded += this.ListOrganizerItem_Loaded_UpdateTextContentBindings;
this.ApplyTemplate();
return;
}
if (!string.IsNullOrEmpty(this.TextContentPropertyName))
{
Binding b = new Binding(this.TextContentPropertyName);
b.UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged;
this.linkButton.SetBinding(Button.ContentProperty, b);
this.editBox.SetBinding(TextBox.TextProperty, b);
}
else
{
BindingOperations.ClearBinding(this.linkButton, Button.ContentProperty);
BindingOperations.ClearBinding(this.editBox, TextBox.TextProperty);
}
}
private void ListOrganizerItem_Loaded_UpdateTextContentBindings(object sender, RoutedEventArgs e)
{
this.Loaded -= this.ListOrganizerItem_Loaded_UpdateTextContentBindings;
this.UpdateTextContentBindings();
}
#region OnApplyTemplate Helpers
partial void PreOnApplyTemplate()
{
this.DetachFromVisualTree();
}
partial void PostOnApplyTemplate()
{
this.AttachToVisualTree();
}
private void AttachToVisualTree()
{
this.editBox.IsVisibleChanged += new DependencyPropertyChangedEventHandler(this.EditBox_IsVisibleChanged);
this.editBox.KeyDown += this.EditBox_KeyDown;
this.editBox.LostFocus += this.EditBox_LostFocus;
this.templatedParent = this.TemplatedParent as FrameworkElement;
if (this.templatedParent != null)
{
this.templatedParent.KeyDown += this.TemplatedParent_OnKeyDown;
}
}
private void DetachFromVisualTree()
{
if (this.editBox != null)
{
this.editBox.IsVisibleChanged -= this.EditBox_IsVisibleChanged;
this.editBox.KeyDown -= this.EditBox_KeyDown;
this.editBox.LostFocus -= this.EditBox_LostFocus;
}
if (this.templatedParent != null)
{
this.templatedParent.KeyDown -= this.TemplatedParent_OnKeyDown;
}
}
#endregion OnApplyTemplate Helpers
}
}
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