/// <summary>
/// Gives focus to the first control in the tree.
/// </summary>
/// <param name="sender">The label area element.</param>
/// <param name="e">Mouse Button Event Args.</param>
private void LabelAreaElement_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
UIElement content = this.Content as UIElement;
if (content != null)
{
Control control = LabeledContentControl.GetFirstControl(content);
if (control != null)
{
FocusHelper.FocusControl(control);
}
}
}
/// <summary>
/// Collapses the list, if behaviour is not overriden.
/// </summary>
/// <param name="sender">The cascading list box item.</param>
/// <param name="e">Selected Event Args.</param>
private void CascadingListBoxItem_Selected(object sender, SelectedEventArgs e)
{
if (this.CollapseOnSelection && !e.Handled)
{
this.IsExpanded = false;
}
FocusHelper.FocusControl(this);
if (e.SelectedItem != this.OtherItem)
{
this.RaiseItemSelected();
}
}
/// <summary>
/// Moves focus to the correct control.
/// </summary>
/// <param name="sender">The cascading list box.</param>
/// <param name="e">Routed Event Args.</param>
private void CascadingListBox_GotFocus(object sender, RoutedEventArgs e)
{
CompositionTarget.Rendering -= new EventHandler(this.CompositionTargetRendering_LostFocus);
this.isFocused = true;
#if !SILVERLIGHT
if (e.OriginalSource == this || e.OriginalSource == this.selectedItemButton || e.OriginalSource is CascadingListBoxItem)
{
this.IsTabStop = false;
}
#endif
#if !SILVERLIGHT
if (this.lastFocusedElement != e.OriginalSource && this.SelectedItem == null || (!this.IsExpanded && e.OriginalSource is CascadingListBoxItem))
{
this.lastFocusedElement = e.OriginalSource;
}
if (!this.IsExpanded && (e.OriginalSource is CascadingListBoxItem) && this.lastFocusedElement == e.OriginalSource && this.selectedItemButton != null)
{
FocusHelper.FocusControl(this.selectedItemButton);
}
else
{
this.lastFocusedElement = e.OriginalSource;
}
#endif
if (this.focusSelectedItem && this.IsExpanded && this.ConfirmedSelectedItem != null && this.containersByItem.ContainsKey(this.ConfirmedSelectedItem))
{
this.containersByItem[this.ConfirmedSelectedItem].Focus();
this.focusSelectedItem = false;
}
else if (this.IsExpanded && this.SelectedItem != null && this.containersByItem.ContainsKey(this.SelectedItem))
{
this.containersByItem[this.SelectedItem].Focus();
}
else if (this.IsExpanded && (this.SelectedItem == null || this.SelectedItem == this.OtherItem) && this.Items.Count > 0 && (!this.Items.Contains(this.OtherItem) || this.SelectedIndex != this.Items.IndexOf(this.OtherItem)))
{
this.SelectedItem = this.Items[0];
if (this.containersByItem.ContainsKey(this.Items[0]))
{
this.containersByItem[this.Items[0]].Focus();
}
}
else if (!this.IsExpanded && this.selectedItemButton != null && this.ConfirmedSelectedItem != null && e.OriginalSource != this.selectedItemButton)
{
this.selectedItemButton.Focus();
}
}
/// <summary>
/// Updates the UI.
/// </summary>
/// <param name="isFieldShowing">Whether the field is showing.</param>
private void UpdateIsFieldShowing(bool isFieldShowing)
{
if (this.contentPresenter != null && this.showFieldButton != null)
{
if (isFieldShowing && this.Content != null)
{
this.contentPresenter.Visibility = Visibility.Visible;
this.showFieldButton.Visibility = Visibility.Collapsed;
if (this.isFocused)
{
Control control = this.Control != null ? this.Control : GetFirstControl(this.Content as UIElement);
SplitComboBox splitComboBox = control as SplitComboBox;
if (splitComboBox != null)
{
splitComboBox.OpenDropDownOnGotFocus = true;
}
FocusHelper.FocusControl(control);
}
if (this.Expanded != null)
{
this.Expanded(this, EventArgs.Empty);
}
}
else
{
this.showFieldButton.Visibility = Visibility.Visible;
this.contentPresenter.Visibility = Visibility.Collapsed;
if (this.isFocused)
{
FocusHelper.FocusControl(this.showFieldButton);
}
if (this.Collapsed != null)
{
this.Collapsed(this, EventArgs.Empty);
}
}
}
}
/// <summary>
/// Sets the text box text, and selects all.
/// </summary>
/// <param name="sender">The composition target.</param>
/// <param name="e">Event Args.</param>
private void CompositionTargetRendering_SetTextBoxText(object sender, EventArgs e)
{
CompositionTarget.Rendering -= new EventHandler(this.CompositionTargetRendering_SetTextBoxText);
this.textBox.Text = this.SelectedDateText;
FocusHelper.FocusControl(this.textBox);
}
