public void DataGridRowsPresenter_AutomationPeer()
{
List<Customer> boundList = CreateCustomerList(15);
DataGrid dataGrid = new DataGrid();
Assert.IsNotNull(dataGrid);
isLoaded = false;
dataGrid.Width = 350;
dataGrid.Height = 250;
dataGrid.Loaded += new RoutedEventHandler(dataGrid_Loaded);
dataGrid.AutoGenerateColumns = true;
DataGridRowsPresenter rowsPresenter = new DataGridRowsPresenter();
TestPanel.Children.Add(dataGrid);
TestPanel.Children.Add(rowsPresenter);
EnqueueConditional(delegate { return isLoaded; });
this.EnqueueYieldThread();
AutomationPeer peer = null;
EnqueueCallback(delegate
{
peer = DataGridAutomationPeer.CreatePeerForElement(dataGrid.TestHook.RowsPresenter);
Assert.IsNotNull(peer);
Assert.AreEqual(typeof(DataGridRowsPresenter).Name, peer.GetClassName(), "Incorrect ClassName value");
Assert.AreEqual(AutomationControlType.Custom, peer.GetAutomationControlType(), "Incorrect ControlType value");
Assert.AreEqual(false, peer.IsContentElement(), "Incorrect IsContentElement value");
Assert.AreEqual(true, peer.IsControlElement(), "Incorrect IsControlElement value");
Assert.AreEqual(false, peer.IsKeyboardFocusable(), "Incorrect IsKeyBoardFocusable value");
Assert.IsNotNull(peer.GetChildren(), "GetChildren should never return null");
Assert.AreEqual(0, peer.GetChildren().Count, "Incorrect number of children");
dataGrid.ItemsSource = boundList;
});
this.EnqueueYieldThread();
EnqueueCallback(delegate
{
// After setting the ItemsSource, GetChildren should return boundList.Count number of elements
Assert.AreEqual(boundList.Count, peer.GetChildren().Count, "Incorrect number of children");
// Check that an unattached RowsPresenter does not return null for GetChildren.
peer = DataGridAutomationPeer.CreatePeerForElement(rowsPresenter);
Assert.IsNotNull(peer);
Assert.IsNotNull(peer.GetChildren(), "GetChildren should never return null");
Assert.AreEqual(0, peer.GetChildren().Count, "Empty RowsPresenter should have no children");
});
EnqueueTestComplete();
}
/// <summary>
/// Builds the visual tree for the column header when a new template is applied.
/// </summary>
public override void OnApplyTemplate()
{
// The template has changed, so we need to refresh the visuals
this._measured = false;
if (this._columnHeadersPresenter != null)
{
// If we're applying a new template, we want to remove the old column headers first
this._columnHeadersPresenter.Children.Clear();
}
_columnHeadersPresenter = GetTemplateChild(DATAGRID_elementColumnHeadersPresenterName) as DataGridColumnHeadersPresenter;
if (_columnHeadersPresenter != null)
{
if (this.ColumnsInternal.FillerColumn != null)
{
this.ColumnsInternal.FillerColumn.IsRepresented = false;
}
_columnHeadersPresenter.OwningGrid = this;
// Columns were added before before our Template was applied, add the ColumnHeaders now
foreach (DataGridColumn column in this.ColumnsItemsInternal)
{
InsertDisplayedColumnHeader(column);
}
}
if (this._rowsPresenter != null)
{
// If we're applying a new template, we want to remove the old rows first
this.UnloadElements(false /*recycle*/);
}
_rowsPresenter = GetTemplateChild(DATAGRID_elementRowsPresenterName) as DataGridRowsPresenter;
if (_rowsPresenter != null)
{
_rowsPresenter.OwningGrid = this;
InvalidateRowHeightEstimate();
UpdateRowDetailsHeightEstimate();
}
_frozenColumnScrollBarSpacer = GetTemplateChild(DATAGRID_elementFrozenColumnScrollBarSpacerName) as FrameworkElement;
if (_hScrollBar != null)
{
_hScrollBar.Scroll -= new ScrollEventHandler(HorizontalScrollBar_Scroll);
}
_hScrollBar = GetTemplateChild(DATAGRID_elementHorizontalScrollbarName) as ScrollBar;
if (_hScrollBar != null)
{
_hScrollBar.IsTabStop = false;
_hScrollBar.Maximum = 0.0;
_hScrollBar.Orientation = Orientation.Horizontal;
_hScrollBar.Visibility = Visibility.Collapsed;
_hScrollBar.Scroll += new ScrollEventHandler(HorizontalScrollBar_Scroll);
}
if (_vScrollBar != null)
{
_vScrollBar.Scroll -= new ScrollEventHandler(VerticalScrollBar_Scroll);
}
_vScrollBar = GetTemplateChild(DATAGRID_elementVerticalScrollbarName) as ScrollBar;
if (_vScrollBar != null)
{
_vScrollBar.IsTabStop = false;
_vScrollBar.Maximum = 0.0;
_vScrollBar.Orientation = Orientation.Vertical;
_vScrollBar.Visibility = Visibility.Collapsed;
_vScrollBar.Scroll += new ScrollEventHandler(VerticalScrollBar_Scroll);
}
_topLeftCornerHeader = GetTemplateChild(DATAGRID_elementTopLeftCornerHeaderName) as ContentControl;
EnsureTopLeftCornerHeader(); // EnsureTopLeftCornerHeader checks for a null _topLeftCornerHeader;
_topRightCornerHeader = GetTemplateChild(DATAGRID_elementTopRightCornerHeaderName) as ContentControl;
if (this._validationSummary != null)
{
this._validationSummary.FocusingInvalidControl -= new EventHandler<FocusingInvalidControlEventArgs>(ValidationSummary_FocusingInvalidControl);
this._validationSummary.SelectionChanged -= new EventHandler<SelectionChangedEventArgs>(ValidationSummary_SelectionChanged);
}
this._validationSummary = GetTemplateChild(DATAGRID_elementValidationSummary) as ValidationSummary;
if (this._validationSummary != null)
{
// The ValidationSummary defaults to using its parent if Target is null, so the only
// way to prevent it from automatically picking up errors is to set it to some useless element.
if (this._validationSummary.Target == null)
{
this._validationSummary.Target = new Rectangle();
}
this._validationSummary.FocusingInvalidControl += new EventHandler<FocusingInvalidControlEventArgs>(ValidationSummary_FocusingInvalidControl);
this._validationSummary.SelectionChanged += new EventHandler<SelectionChangedEventArgs>(ValidationSummary_SelectionChanged);
if (DesignerProperties.IsInDesignTool)
{
Debug.Assert(this._validationSummary.Errors != null);
// Do not add the default design time errors when in design mode.
this._validationSummary.Errors.Clear();
}
}
UpdateDisabledVisual();
}
/// <summary>
/// AutomationPeer for DataGridColumnHeadersPresenter
/// </summary>
/// <param name="owner">DataGridColumnHeadersPresenter</param>
public DataGridRowsPresenterAutomationPeer(DataGridRowsPresenter owner)
: base(owner)
{
}
public override void OnApplyTemplate()
{
_columnHeadersPresenter = GetTemplateChild(DATAGRID_elementColumnHeadersPresenterName) as DataGridColumnHeadersPresenter;
if (_columnHeadersPresenter != null)
{
_columnHeadersPresenter.OwningGrid = this;
// Columns were added before before our Template was applied, add the ColumnHeaders now
foreach (DataGridColumn column in this.ColumnsInternal)
{
InsertDisplayedColumnHeader(column);
}
}
_rowsPresenter = GetTemplateChild(DATAGRID_elementRowsPresenterName) as DataGridRowsPresenter;
if (_rowsPresenter != null)
{
_rowsPresenter.OwningGrid = this;
InvalidateRowHeightEstimate();
UpdateRowDetailsHeightEstimate();
}
_frozenColumnScrollBarSpacer = GetTemplateChild(DATAGRID_elementFrozenColumnScrollBarSpacerName) as FrameworkElement;
_hScrollBar = GetTemplateChild(DATAGRID_elementHorizontalScrollbarName) as ScrollBar;
if (_hScrollBar != null)
{
_hScrollBar.IsTabStop = false;
_hScrollBar.Maximum = 0.0;
_hScrollBar.Orientation = Orientation.Horizontal;
_hScrollBar.Visibility = Visibility.Collapsed;
_hScrollBar.Scroll += new ScrollEventHandler(HorizontalScrollBar_Scroll);
}
_vScrollBar = GetTemplateChild(DATAGRID_elementVerticalScrollbarName) as ScrollBar;
if (_vScrollBar != null)
{
_vScrollBar.IsTabStop = false;
_vScrollBar.Maximum = 0.0;
_vScrollBar.Orientation = Orientation.Vertical;
_vScrollBar.Visibility = Visibility.Collapsed;
_vScrollBar.Scroll += new ScrollEventHandler(VerticalScrollBar_Scroll);
}
_topLeftCornerHeader = GetTemplateChild(DATAGRID_elementTopLeftCornerHeaderName) as ContentControl;
EnsureTopLeftCornerHeader(); // EnsureTopLeftCornerHeader checks for a null _topLeftCornerHeader;
_topRightCornerHeader = GetTemplateChild(DATAGRID_elementTopRightCornerHeaderName) as ContentControl;
}
