public AutoCompleteItem(AutoCompleteContext context)
{
_context = context;
this.TextBlock = new TextBlock();
_currentSearchPropertyDescriptor = DependencyPropertyDescriptor.FromProperty(AutoCompleteContext.CurrentSearchProperty, typeof(AutoCompleteContext));
_currentSearchPropertyDescriptor.AddValueChanged(_context, _context_CurrentSearchChanged);
}
public AutoCompleteTextBox()
{
InitializeComponent();
_context = new AutoCompleteContext();
spRoot.DataContext = this;
lstAutoCompleteItems.ItemsSource = _items;
DependencyPropertyDescriptor.FromProperty(TextBoxBase.IsSelectionActiveProperty, typeof(TextBoxBase)).AddValueChanged(
txtInput,
(sender, e) =>
{
SetValue(IsSelectionActivePropertyKey, txtInput.IsSelectionActive);
});
txtInput.SelectionChanged +=
(sender, e) =>
{
RaiseEvent(new RoutedEventArgs(SelectionChangedEvent));
};
string raiseTextChangedForValue = null;
DependencyPropertyDescriptor.FromProperty(TextProperty, typeof(AutoCompleteTextBox)).AddValueChanged(
this,
(sender, e) =>
{
string newText = this.Text;
if (txtInput.Text != newText)
{
raiseTextChangedForValue = newText;
txtInput.Text = newText;
raiseTextChangedForValue = null;
}
});
txtInput.TextChanged +=
(sender, e) =>
{
string newText = txtInput.Text;
bool isChange = (this.Text != newText);
bool isValueFromOuterProperty = (newText == raiseTextChangedForValue);
if (isChange || isValueFromOuterProperty)
{
if (isChange)
{
this.Text = newText;
}
RaiseEvent(new TextChangedEventArgs(TextChangedEvent, e.UndoAction, e.Changes));
}
};
this.SetBinding(
SelectionBrushProperty,
new Binding()
{
Source = txtInput,
Path = new PropertyPath(TextBox.SelectionBrushProperty),
});
this.SetBinding(
SelectionOpacityProperty,
new Binding()
{
Source = txtInput,
Path = new PropertyPath(TextBox.SelectionOpacityProperty),
});
}