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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
#if RIBBON_IN_FRAMEWORK
namespace System.Windows.Controls.Ribbon
#else
namespace Microsoft.Windows.Controls.Ribbon
#endif
{
#region Using declarations
using System;
using System.Collections.Specialized;
using System.Diagnostics;
using System.Windows;
using System.Windows.Automation.Peers;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Threading;
#if RIBBON_IN_FRAMEWORK
using System.Windows.Controls.Ribbon.Primitives;
using Microsoft.Windows.Controls;
#else
using Microsoft.Windows.Automation.Peers;
using Microsoft.Windows.Controls.Ribbon.Primitives;
#endif
using MS.Internal;
#endregion
/// <summary>
/// A Ribbon-specific sublclass of MenuItem
/// Handles Mouse and Keyboard input differently than MenuItem.
/// </summary>
[TemplatePart(Name = RibbonMenuItem.ResizeThumbTemplatePartName, Type = typeof(Thumb))]
[TemplatePart(Name = RibbonMenuItem.PopupTemplatePartName, Type = typeof(Popup))]
[TemplatePart(Name = RibbonMenuItem.SideBarBorderTemplatePartName, Type = typeof(Border))]
[TemplatePart(Name = RibbonMenuItem.SubMenuScrollViewerTemplatePartName, Type = typeof(ScrollViewer))]
[StyleTypedProperty(Property = "ItemContainerStyle", StyleTargetType = typeof(RibbonMenuItem))]
public class RibbonMenuItem : MenuItem, ISyncKeyTipAndContent
{
#region Constructors
/// <summary>
/// Initializes static members of the RibbonMenuItem class.
/// </summary>
static RibbonMenuItem()
{
Type ownerType = typeof(RibbonMenuItem);
ItemsPanelTemplate template = new ItemsPanelTemplate(new FrameworkElementFactory(typeof(RibbonMenuItemsPanel)));
template.Seal();
ItemsPanelProperty.OverrideMetadata(ownerType, new FrameworkPropertyMetadata(template));
DefaultStyleKeyProperty.OverrideMetadata(ownerType, new FrameworkPropertyMetadata(ownerType));
ToolTipProperty.OverrideMetadata(ownerType, new FrameworkPropertyMetadata(null, new CoerceValueCallback(RibbonHelper.CoerceRibbonToolTip)));
ToolTipService.ShowOnDisabledProperty.OverrideMetadata(ownerType, new FrameworkPropertyMetadata(true));
CommandProperty.OverrideMetadata(ownerType, new FrameworkPropertyMetadata(RibbonHelper.OnCommandChanged));
ContextMenuProperty.OverrideMetadata(ownerType, new FrameworkPropertyMetadata(RibbonHelper.OnContextMenuChanged, RibbonHelper.OnCoerceContextMenu));
ContextMenuService.ShowOnDisabledProperty.OverrideMetadata(ownerType, new FrameworkPropertyMetadata(true));
IsSubmenuOpenProperty.OverrideMetadata(ownerType, new FrameworkPropertyMetadata(false, new PropertyChangedCallback(OnIsSubmenuOpenChanged)));
IsCheckedProperty.OverrideMetadata(ownerType, new FrameworkPropertyMetadata(false, new PropertyChangedCallback(OnIsCheckedChanged)));
HasGalleryProperty.OverrideMetadata(typeof(RibbonMenuItem), new FrameworkPropertyMetadata(false, new PropertyChangedCallback(OnHasGalleryChanged)), RibbonMenuButton.HasGalleryPropertyKey);
HeaderProperty.OverrideMetadata(ownerType, new FrameworkPropertyMetadata(null, new PropertyChangedCallback(OnHeaderChanged), new CoerceValueCallback(CoerceHeader)));
EventManager.RegisterClassHandler(ownerType, Mouse.PreviewMouseDownOutsideCapturedElementEvent, new MouseButtonEventHandler(OnClickThroughThunk));
EventManager.RegisterClassHandler(ownerType, RibbonMenuButton.RibbonIsSelectedChangedEvent, new RoutedPropertyChangedEventHandler<bool>(OnRibbonIsSelectedChanged));
EventManager.RegisterClassHandler(ownerType, RibbonControlService.DismissPopupEvent, new RibbonDismissPopupEventHandler(OnDismissPopupThunk));
EventManager.RegisterClassHandler(ownerType, KeyTipService.ActivatingKeyTipEvent, new ActivatingKeyTipEventHandler(OnActivatingKeyTipThunk));
EventManager.RegisterClassHandler(ownerType, KeyTipService.KeyTipAccessedEvent, new KeyTipAccessedEventHandler(OnKeyTipAccessedThunk));
EventManager.RegisterClassHandler(ownerType, FrameworkElement.ContextMenuOpeningEvent, new ContextMenuEventHandler(OnContextMenuOpeningThunk), true);
EventManager.RegisterClassHandler(ownerType, FrameworkElement.ContextMenuClosingEvent, new ContextMenuEventHandler(OnContextMenuClosingThunk), true);
}
#endregion
#region ToolTip Properties
/// <summary>
/// DependencyProperty for ToolTipTitle property.
/// </summary>
public static readonly DependencyProperty ToolTipTitleProperty =
RibbonControlService.ToolTipTitleProperty.AddOwner(typeof(RibbonMenuItem), new FrameworkPropertyMetadata(new PropertyChangedCallback(RibbonHelper.OnRibbonToolTipPropertyChanged)));
/// <summary>
/// Title text for the tooltip of the control.
/// </summary>
public string ToolTipTitle
{
get { return RibbonControlService.GetToolTipTitle(this); }
set { RibbonControlService.SetToolTipTitle(this, value); }
}
/// <summary>
/// DependencyProperty for ToolTipDescription property.
/// </summary>
public static readonly DependencyProperty ToolTipDescriptionProperty =
RibbonControlService.ToolTipDescriptionProperty.AddOwner(typeof(RibbonMenuItem), new FrameworkPropertyMetadata(new PropertyChangedCallback(RibbonHelper.OnRibbonToolTipPropertyChanged)));
/// <summary>
/// Description text for the tooltip of the control.
/// </summary>
public string ToolTipDescription
{
get { return RibbonControlService.GetToolTipDescription(this); }
set { RibbonControlService.SetToolTipDescription(this, value); }
}
/// <summary>
/// DependencyProperty for ToolTipImageSource property.
/// </summary>
public static readonly DependencyProperty ToolTipImageSourceProperty =
RibbonControlService.ToolTipImageSourceProperty.AddOwner(typeof(RibbonMenuItem), new FrameworkPropertyMetadata(new PropertyChangedCallback(RibbonHelper.OnRibbonToolTipPropertyChanged)));
/// <summary>
/// Image source for the tooltip of the control.
/// </summary>
public ImageSource ToolTipImageSource
{
get { return RibbonControlService.GetToolTipImageSource(this); }
set { RibbonControlService.SetToolTipImageSource(this, value); }
}
/// <summary>
/// DependencyProperty for ToolTipFooterTitle property.
/// </summary>
public static readonly DependencyProperty ToolTipFooterTitleProperty =
RibbonControlService.ToolTipFooterTitleProperty.AddOwner(typeof(RibbonMenuItem), new FrameworkPropertyMetadata(new PropertyChangedCallback(RibbonHelper.OnRibbonToolTipPropertyChanged)));
/// <summary>
/// Title text for the footer of tooltip of the control.
/// </summary>
public string ToolTipFooterTitle
{
get { return RibbonControlService.GetToolTipFooterTitle(this); }
set { RibbonControlService.SetToolTipFooterTitle(this, value); }
}
/// <summary>
/// DependencyProperty for ToolTipFooterDescription property.
/// </summary>
public static readonly DependencyProperty ToolTipFooterDescriptionProperty =
RibbonControlService.ToolTipFooterDescriptionProperty.AddOwner(typeof(RibbonMenuItem), new FrameworkPropertyMetadata(new PropertyChangedCallback(RibbonHelper.OnRibbonToolTipPropertyChanged)));
/// <summary>
/// Description text for the footer of the tooltip of the control.
/// </summary>
public string ToolTipFooterDescription
{
get { return RibbonControlService.GetToolTipFooterDescription(this); }
set { RibbonControlService.SetToolTipFooterDescription(this, value); }
}
/// <summary>
/// DependencyProperty for ToolTipFooterImageSource property.
/// </summary>
public static readonly DependencyProperty ToolTipFooterImageSourceProperty =
RibbonControlService.ToolTipFooterImageSourceProperty.AddOwner(typeof(RibbonMenuItem), new FrameworkPropertyMetadata(new PropertyChangedCallback(RibbonHelper.OnRibbonToolTipPropertyChanged)));
/// <summary>
/// Image source for the footer of the tooltip of the control.
/// </summary>
public ImageSource ToolTipFooterImageSource
{
get { return RibbonControlService.GetToolTipFooterImageSource(this); }
set { RibbonControlService.SetToolTipFooterImageSource(this, value); }
}
#endregion ToolTip Properties
#region RibbonControlService Properties
/// <summary>
/// DependencyProperty for ImageSource property.
/// </summary>
public static readonly DependencyProperty ImageSourceProperty =
DependencyProperty.Register("ImageSource",
typeof(ImageSource),
typeof(RibbonMenuItem),
new FrameworkPropertyMetadata(new PropertyChangedCallback(OnImageSourceChanged)));
/// <summary>
/// Gets or sets the ImageSource for the RibbonMenuItem.
/// </summary>
public ImageSource ImageSource
{
get { return (ImageSource)GetValue(ImageSourceProperty); }
set { SetValue(ImageSourceProperty, value); }
}
private static void OnImageSourceChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
d.CoerceValue(QuickAccessToolBarImageSourceProperty);
}
/// <summary>
/// DependencyProperty for QuickAccessToolBarImageSource property.
/// </summary>
public static readonly DependencyProperty QuickAccessToolBarImageSourceProperty =
DependencyProperty.Register("QuickAccessToolBarImageSource",
typeof(ImageSource),
typeof(RibbonMenuItem),
new FrameworkPropertyMetadata(null, new CoerceValueCallback(CoerceQuickAccessToolBarImageSource)));
/// <summary>
/// Gets or sets the QuickAccessToolBarImageSource for the RibbonMenuItem.
/// This property is used as the image for this MenuItem when added to the
/// QAT. By default the value of this property is coerced to be the same as
/// the ImageSource property. This property is available separate from the
/// ImageSource property because there may be instances where the MenuItems
/// within a drop down do not show any Image, but when that MenuItem is added
/// to the QAT, it shows an image. (Notice the default green icon that shows
/// for MenuItem within Office apps.)
/// </summary>
public ImageSource QuickAccessToolBarImageSource
{
get { return (ImageSource)GetValue(QuickAccessToolBarImageSourceProperty); }
set { SetValue(QuickAccessToolBarImageSourceProperty, value); }
}
private static object CoerceQuickAccessToolBarImageSource(DependencyObject d, object baseValue)
{
if (baseValue == null)
{
return ((RibbonMenuItem)d).ImageSource;
}
return baseValue;
}
#endregion
#region Drop Down Properties
private static readonly DependencyPropertyKey IsDropDownPositionedLeftPropertyKey = DependencyProperty.RegisterReadOnly("IsDropDownPositionedLeft",
typeof(bool),
typeof(RibbonMenuItem),
new FrameworkPropertyMetadata(false));
public static readonly DependencyProperty IsDropDownPositionedLeftProperty = IsDropDownPositionedLeftPropertyKey.DependencyProperty;
/// <summary>
/// Indicates whether the Dropdown Popup position has been flipped to the left side of MenuItem
/// because Popup was near a screen edge.
/// </summary>
public bool IsDropDownPositionedLeft
{
get { return (bool)GetValue(IsDropDownPositionedLeftProperty); }
private set { SetValue(IsDropDownPositionedLeftPropertyKey, value); }
}
public static readonly DependencyProperty CanUserResizeVerticallyProperty = RibbonMenuButton.CanUserResizeVerticallyProperty.AddOwner(
typeof(RibbonMenuItem),
new FrameworkPropertyMetadata(false,
null,
new CoerceValueCallback(CoerceCanUserResizeProperty)));
/// <summary>
/// Gets or sets whether user is allowed to resize this button's dropdown Popup vertically
/// Applicable only when Items collection has atleast one RibbonGallery.
/// </summary>
public bool CanUserResizeVertically
{
get { return (bool)GetValue(CanUserResizeVerticallyProperty); }
set { SetValue(CanUserResizeVerticallyProperty, value); }
}
public static readonly DependencyProperty CanUserResizeHorizontallyProperty = RibbonMenuButton.CanUserResizeHorizontallyProperty.AddOwner(
typeof(RibbonMenuItem),
new FrameworkPropertyMetadata(false,
null,
new CoerceValueCallback(CoerceCanUserResizeProperty)));
/// <summary>
/// Gets or sets whether user is allowed to resize this button's dropdown Popup horizontally
/// Applicable only when Items collection has atleast one RibbonGallery.
/// and when CanUserResizeVertically is also set to true.
/// </summary>
public bool CanUserResizeHorizontally
{
get { return (bool)GetValue(CanUserResizeHorizontallyProperty); }
set { SetValue(CanUserResizeHorizontallyProperty, value); }
}
public static readonly DependencyProperty DropDownHeightProperty = RibbonMenuButton.DropDownHeightProperty.AddOwner(typeof(RibbonMenuItem),
new FrameworkPropertyMetadata(double.NaN,
null,
new CoerceValueCallback(CoerceDropDownHeightProperty)));
/// <summary>
/// Gets or Sets the height of the Popup that is displayed when this button is invoked
/// Applicable only when Items collection has atleast one RibbonGallery.
/// </summary>
public double DropDownHeight
{
get { return (double)GetValue(DropDownHeightProperty); }
set { SetValue(DropDownHeightProperty, value); }
}
public static readonly DependencyProperty HasGalleryProperty = RibbonMenuButton.HasGalleryPropertyKey.DependencyProperty.AddOwner(typeof(RibbonMenuItem));
/// <summary>
/// Indicates that there is atleast one RibbonGallery in Items collection.
/// </summary>
public bool HasGallery
{
get { return (bool)GetValue(HasGalleryProperty); }
private set { SetValue(RibbonMenuButton.HasGalleryPropertyKey, value); }
}
private static void OnHasGalleryChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
d.CoerceValue(CanUserResizeHorizontallyProperty);
d.CoerceValue(CanUserResizeVerticallyProperty);
d.CoerceValue(DropDownHeightProperty);
RibbonMenuItem menuItem = (RibbonMenuItem)d;
if (menuItem.IsSubmenuOpen)
{
// First time the dropdown opens, HasGallery is always false
// because item container generation never happened yet and hence
// it ignores DropDownHeight. Hence reuse DropDownHeight when HasGallery
// value changes.
RibbonHelper.SetDropDownHeight(menuItem._itemsPresenter, (bool)e.NewValue, menuItem.DropDownHeight);
}
// Note that when the HasGallery property changes we expect that the
// VerticalScrollBarVisibilityProperty for the primary _submenuScrollViewer
// that hosts galleries and/or menu items is updated. Even though this
// property is marked AffectsMeasure it doesn't exactly cause the additonal
// call to ScrollViewer.MeasureOverrider because HasGallery is typically
// updated during a Measure pass when PrepareContainerForItemOverride is
// called and thus the invalidation noops. To ensure that we call
// ScrollViewer.MeasureOverride another time after this property has been
// updated, we need to wait for the current Measure pass to subside and
// then InvalidateMeasure on the _submenuScrollViewer.
RibbonHelper.InvalidateScrollBarVisibility(menuItem._submenuScrollViewer);
}
private void OnItemContainerGeneratorStatusChanged(object sender, EventArgs e)
{
if (ItemContainerGenerator.Status == GeneratorStatus.ContainersGenerated)
{
ItemContainerGenerator.StatusChanged -= OnItemContainerGeneratorStatusChanged;
CoerceValue(CanUserResizeHorizontallyProperty);
CoerceValue(CanUserResizeVerticallyProperty);
CoerceValue(DropDownHeightProperty);
}
}
private static object CoerceDropDownHeightProperty(DependencyObject d, object baseValue)
{
RibbonMenuItem menuItem = (RibbonMenuItem)d;
if ((menuItem.ItemContainerGenerator.Status == GeneratorStatus.ContainersGenerated) &&
!menuItem.HasGallery)
{
return double.NaN;
}
return baseValue;
}
private static object CoerceCanUserResizeProperty(DependencyObject d, object baseValue)
{
RibbonMenuItem menuItem = (RibbonMenuItem)d;
if ((menuItem.ItemContainerGenerator.Status == GeneratorStatus.ContainersGenerated) &&
!menuItem.HasGallery)
{
return false;
}
return baseValue;
}
#endregion
#region Visual States
/// <summary>
/// DependencyProperty for Ribbon property.
/// </summary>
public static readonly DependencyProperty RibbonProperty =
RibbonControlService.RibbonProperty.AddOwner(typeof(RibbonMenuItem));
/// <summary>
/// This property is used to access visual style brushes defined on the Ribbon class.
/// </summary>
public Ribbon Ribbon
{
get { return RibbonControlService.GetRibbon(this); }
}
/// <summary>
/// DependencyProperty for MouseOverBorderBrush property.
/// </summary>
public static readonly DependencyProperty MouseOverBorderBrushProperty =
RibbonControlService.MouseOverBorderBrushProperty.AddOwner(typeof(RibbonMenuItem));
/// <summary>
/// Outer border brush used in a "hover" state of the RibbonMenuItem.
/// </summary>
public Brush MouseOverBorderBrush
{
get { return RibbonControlService.GetMouseOverBorderBrush(this); }
set { RibbonControlService.SetMouseOverBorderBrush(this, value); }
}
/// <summary>
/// DependencyProperty for MouseOverBackground property.
/// </summary>
public static readonly DependencyProperty MouseOverBackgroundProperty =
RibbonControlService.MouseOverBackgroundProperty.AddOwner(typeof(RibbonMenuItem));
/// <summary>
/// Control background brush used in a "hover" state of the RibbonMenuItem.
/// </summary>
public Brush MouseOverBackground
{
get { return RibbonControlService.GetMouseOverBackground(this); }
set { RibbonControlService.SetMouseOverBackground(this, value); }
}
/// <summary>
/// DependencyProperty for PressedBorderBrush property.
/// </summary>
public static readonly DependencyProperty PressedBorderBrushProperty =
RibbonControlService.PressedBorderBrushProperty.AddOwner(typeof(RibbonMenuItem));
/// <summary>
/// Outer border brush used in a "pressed" state of the RibbonMenuItem.
/// </summary>
public Brush PressedBorderBrush
{
get { return RibbonControlService.GetPressedBorderBrush(this); }
set { RibbonControlService.SetPressedBorderBrush(this, value); }
}
/// <summary>
/// DependencyProperty for PressedBackground property.
/// </summary>
public static readonly DependencyProperty PressedBackgroundProperty =
RibbonControlService.PressedBackgroundProperty.AddOwner(typeof(RibbonMenuItem));
/// <summary>
/// Control background brush used in a "pressed" state of the RibbonMenuItem.
/// </summary>
public Brush PressedBackground
{
get { return RibbonControlService.GetPressedBackground(this); }
set { RibbonControlService.SetPressedBackground(this, value); }
}
/// <summary>
/// DependencyProperty for CheckedBackground property.
/// </summary>
public static readonly DependencyProperty CheckedBackgroundProperty =
RibbonControlService.CheckedBackgroundProperty.AddOwner(typeof(RibbonMenuItem));
/// <summary>
/// Control background brush used in a "Checked" state of the RibbonMenuItem.
/// </summary>
public Brush CheckedBackground
{
get { return RibbonControlService.GetCheckedBackground(this); }
set { RibbonControlService.SetCheckedBackground(this, value); }
}
/// <summary>
/// DependencyProperty for CheckedBorderBrush property.
/// </summary>
public static readonly DependencyProperty CheckedBorderBrushProperty =
RibbonControlService.CheckedBorderBrushProperty.AddOwner(typeof(RibbonMenuItem));
/// <summary>
/// Control border brush used to paint a "Checked" RibbonMenuItem.
/// </summary>
public Brush CheckedBorderBrush
{
get { return RibbonControlService.GetCheckedBorderBrush(this); }
set { RibbonControlService.SetCheckedBorderBrush(this, value); }
}
#endregion
#region ContainerGeneration
private object _currentItem;
protected override bool IsItemItsOwnContainerOverride(object item)
{
bool ret = (item is RibbonMenuItem) || (item is RibbonSeparator) || (item is RibbonGallery);
if (!ret)
{
_currentItem = item;
}
return ret;
}
protected override DependencyObject GetContainerForItemOverride()
{
object currentItem = _currentItem;
_currentItem = null;
if (UsesItemContainerTemplate)
{
DataTemplate itemContainerTemplate = ItemContainerTemplateSelector.SelectTemplate(currentItem, this);
if (itemContainerTemplate != null)
{
object itemContainer = itemContainerTemplate.LoadContent();
if (itemContainer is RibbonMenuItem || itemContainer is RibbonGallery || itemContainer is RibbonSeparator)
{
return itemContainer as DependencyObject;
}
else
{
throw new InvalidOperationException(Microsoft.Windows.Controls.SR.Format(Microsoft.Windows.Controls.SR.InvalidMenuButtonOrItemContainer, this.GetType().Name, itemContainer));
}
}
}
return new RibbonMenuItem();
}
protected override bool ShouldApplyItemContainerStyle(DependencyObject container, object item)
{
if (container is RibbonSeparator ||
container is RibbonGallery)
{
return false;
}
else
{
return base.ShouldApplyItemContainerStyle(container, item);
}
}
protected override void PrepareContainerForItemOverride(DependencyObject element, object item)
{
base.PrepareContainerForItemOverride(element, item);
if (element is RibbonGallery)
{
HasGallery = (++_galleryCount > 0);
}
else
{
RibbonSeparator separator = element as RibbonSeparator;
if (separator != null)
{
ValueSource vs = DependencyPropertyHelper.GetValueSource(separator, StyleProperty);
if (vs.BaseValueSource <= BaseValueSource.ImplicitStyleReference)
separator.SetResourceReference(StyleProperty, MenuItem.SeparatorStyleKey);
separator.DefaultStyleKeyInternal = MenuItem.SeparatorStyleKey;
}
}
}
protected override void ClearContainerForItemOverride(DependencyObject element, object item)
{
base.ClearContainerForItemOverride(element, item);
if (element is RibbonGallery)
{
HasGallery = (--_galleryCount > 0);
}
}
#if !RIBBON_IN_FRAMEWORK
/// <summary>
/// DependencyProperty for ItemContainerTemplateSelector property.
/// </summary>
public static readonly DependencyProperty ItemContainerTemplateSelectorProperty =
RibbonMenuButton.ItemContainerTemplateSelectorProperty.AddOwner(
typeof(RibbonMenuItem),
new FrameworkPropertyMetadata(new DefaultItemContainerTemplateSelector()));
/// <summary>
/// DataTemplateSelector property which provides the DataTemplate to be used to create an instance of the ItemContainer.
/// </summary>
public ItemContainerTemplateSelector ItemContainerTemplateSelector
{
get { return (ItemContainerTemplateSelector)GetValue(ItemContainerTemplateSelectorProperty); }
set { SetValue(ItemContainerTemplateSelectorProperty, value); }
}
/// <summary>
/// DependencyProperty for UsesItemContainerTemplate property.
/// </summary>
public static readonly DependencyProperty UsesItemContainerTemplateProperty =
RibbonMenuButton.UsesItemContainerTemplateProperty.AddOwner(typeof(RibbonMenuItem));
/// <summary>
/// UsesItemContainerTemplate property which says whether the ItemContainerTemplateSelector property is to be used.
/// </summary>
public bool UsesItemContainerTemplate
{
get { return (bool)GetValue(UsesItemContainerTemplateProperty); }
set { SetValue(UsesItemContainerTemplateProperty, value); }
}
#endif
#endregion ContainerGeneration
#region Protected Methods
public override void OnApplyTemplate()
{
// If a new template has just been generated then
// be sure to clear any stale ItemsHost references
if (InternalItemsHost != null && !this.IsAncestorOf(InternalItemsHost))
{
InternalItemsHost = null;
}
base.OnApplyTemplate();
if (_resizeThumb != null)
{
_resizeThumb.DragStarted -= new DragStartedEventHandler(OnPopupResizeStarted);
_resizeThumb.DragDelta -= new DragDeltaEventHandler(OnPopupResize);
}
_resizeThumb = GetTemplateChild(ResizeThumbTemplatePartName) as Thumb;
if (_resizeThumb != null)
{
_resizeThumb.DragStarted += new DragStartedEventHandler(OnPopupResizeStarted);
_resizeThumb.DragDelta += new DragDeltaEventHandler(OnPopupResize);
}
_itemsPresenter = GetTemplateChild(ItemsPresenterTemplatePartName) as ItemsPresenter;
if (_popup != null)
{
_popup.Opened -= new EventHandler(OnPopupOpened);
_popup.CustomPopupPlacementCallback -= new CustomPopupPlacementCallback(PlacePopup);
}
_popup = GetTemplateChild(PopupTemplatePartName) as Popup;
if (_popup != null)
{
_popup.Opened += new EventHandler(OnPopupOpened);
_popup.CustomPopupPlacementCallback += new CustomPopupPlacementCallback(PlacePopup);
}
_sideBarBorder = GetTemplateChild(SideBarBorderTemplatePartName) as UIElement;
PropertyHelper.TransferProperty(this, ContextMenuProperty); // Coerce to get a default ContextMenu if none has been specified.
PropertyHelper.TransferProperty(this, RibbonControlService.CanAddToQuickAccessToolBarDirectlyProperty);
ItemContainerGenerator.StatusChanged += new EventHandler(OnItemContainerGeneratorStatusChanged);
_submenuScrollViewer = GetTemplateChild(SubMenuScrollViewerTemplatePartName) as ScrollViewer;
if (_submenuScrollViewer != null)
{
KeyTipService.SetCanClipKeyTip(_submenuScrollViewer, false);
}
}
/// <summary>
/// ToolTip is always opened as soon as the cursor moves over it,
/// it stays invisible for the duration of the InitialShowDelay.
/// Because the submenu popup is opened with a delay, it covers up the tooltip.
/// To avoid this, we disable ToolTipService, however ToolTIp service does not
/// close previously opened tooltips when it is disabled. So we need to
/// force it closed as soon as the popup comes up.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void OnPopupOpened(object sender, EventArgs e)
{
RibbonToolTip toolTip = ToolTip as RibbonToolTip;
if (toolTip != null)
{
toolTip.IsOpen = false;
}
}
/// <summary>
/// RibbonMenuItems are hosted directly in a Menu, therefore TopLevelHeader should behave same as SubmenuHeader
/// In base MenuItem ToplevelHeaders are opened immediately,
/// but we want them to be opened after MenuShowDelay delay
/// Therefore reimplement base.OnMouseEnter here.
/// </summary>
/// <param name="e"></param>
protected override void OnMouseEnter(System.Windows.Input.MouseEventArgs e)
{
FocusOrSelect();
if (CanOpenSubMenu)
{
SetTimerToOpenSubmenu();
}
UpdateIsPressed();
}
/// <summary>
/// base MenuItem closes submenu when mouse moves away.
/// Therefore reimplement base.OnMouseLeave ourselves without closing submenu's.
/// </summary>
/// <param name="e"></param>
protected override void OnMouseLeave(System.Windows.Input.MouseEventArgs e)
{
if (IgnoreNextMouseLeave)
{
IgnoreNextMouseLeave = false;
return;
}
if (!IsSubmenuOpen)
{
// Either this is a leaf node (SubmenuItem or ToplevelItem role)
// or Mouse left a header node before MenuShowDelay time.
IsHighlighted = false;
RibbonIsSelected = false;
if (IsKeyboardFocusWithin)
{
ItemsControl parent = ItemsControl.ItemsControlFromItemContainer(this);
if (parent != null)
{
parent.Focus();
}
}
}
UpdateIsPressed();
}
/// <summary>
/// Focus this item or, if that fails, just mark it selected.
/// </summary>
internal void FocusOrSelect()
{
// Setting focus will cause the item to be selected,
// but if we fail to focus we should still select.
// (This is to help enable focusless menus).
// Check IsKeyboardFocusWithin to allow rich content within the menuitem.
if (!IsKeyboardFocusWithin)
{
Focus();
}
if (!RibbonIsSelected)
{
// If it's already focused, make sure it's also selected.
RibbonIsSelected = true;
}
// If the item is selected we should ensure that it's highlighted.
if (RibbonIsSelected && !IsHighlighted)
{
IsHighlighted = true;
}
}
private void UpdateIsPressed()
{
Rect itemBounds = new Rect(new Point(), RenderSize);
if ((Mouse.LeftButton == MouseButtonState.Pressed) &&
IsMouseOver &&
itemBounds.Contains(Mouse.GetPosition(this)))
{
IsPressed = true;
}
else
{
IsPressed = false;
}
}
internal bool HandleLeftKeyDown(DependencyObject originalSource)
{
UIElement popupChild = _popup.TryGetChild();
if (popupChild != null &&
originalSource != null &&
(!popupChild.IsKeyboardFocusWithin || TreeHelper.IsVisualAncestorOf(popupChild, originalSource)))
{
if (IsSubmenuOpen)
{
this.Focus();
CloseSubmenu();
return true;
}
}
return false;
}
protected override void OnKeyDown(KeyEventArgs e)
{
if (CanOpenSubMenu)
{
RibbonHelper.HandleDropDownKeyDown(this, e,
delegate { return IsSubmenuOpen; },
delegate(bool value) { IsSubmenuOpen = value; },
this,
_popup.TryGetChild());
}
if (e.Handled)
{
return;
}
if (CanOpenSubMenu || IsSubmenuOpen)
{
Key key = e.Key;
// In Right to Left mode we switch Right and Left keys
if (FlowDirection == FlowDirection.RightToLeft)
{
if (key == Key.Right)
{
key = Key.Left;
}
else if (key == Key.Left)
{
key = Key.Right;
}
}
bool handled = false;
int focusedIndex = ItemContainerGenerator.IndexFromContainer(e.OriginalSource as DependencyObject);
bool itemNavigateFromCurrentFocused = true;
if (focusedIndex < 0)
{
UIElement popupChild = _popup.TryGetChild();
if (popupChild != null &&
popupChild.IsKeyboardFocusWithin)
{
// If the popup already has focus within,
// then the focused element is not the item container
// itself, but is inside one such container (eg. filter button
// of gallery). Hence do not navigate in such case, but do default
// keyboard navigation.
itemNavigateFromCurrentFocused = false;
}
}
switch (key)
{
case Key.Enter:
case Key.Space:
case Key.Right:
if (!IsSubmenuOpen)
{
OpenRibbonSubmenuWithKeyboard();
if (key != Key.Right)
{
_handleNextUpKey = key;
}
handled = true;
}
else if (_ribbonCurrentSelection == null)
{
if (e.Key == Key.Right)
{
handled = RibbonHelper.NavigateToNextMenuItemOrGallery(this, -1, BringIndexIntoView);
}
else
{
CloseSubmenu();
handled = true;
}
}
break;
case Key.Left:
handled = HandleLeftKeyDown(e.OriginalSource as DependencyObject);
break;
// If a menuitem gets a down or up key and the submenu is open, we should focus the first or last
// item in the submenu (respectively). If the submenu is not opened, this will be handled by Menu.
case Key.Down:
if (IsSubmenuOpen)
{
if (itemNavigateFromCurrentFocused)
{
handled = RibbonHelper.NavigateToNextMenuItemOrGallery(this, focusedIndex, BringIndexIntoView);
}
else
{
RibbonHelper.MoveFocus(FocusNavigationDirection.Down);
handled = true;
}
}
break;
case Key.Up:
if (IsSubmenuOpen)
{
if (itemNavigateFromCurrentFocused)
{
handled = RibbonHelper.NavigateToPreviousMenuItemOrGallery(this, focusedIndex, BringIndexIntoView);
}
else
{
RibbonHelper.MoveFocus(FocusNavigationDirection.Up);
handled = true;
}
}
break;
case Key.Tab:
if (IsSubmenuOpen && _popup != null && !_popup.IsKeyboardFocusWithin)
{
if ((Keyboard.Modifiers & ModifierKeys.Shift) == ModifierKeys.Shift)
{
handled = RibbonHelper.NavigateToPreviousMenuItemOrGallery(this, focusedIndex, BringIndexIntoView);
}
else
{
handled = RibbonHelper.NavigateToNextMenuItemOrGallery(this, focusedIndex, BringIndexIntoView);
}
}
break;
case Key.Home:
if (IsSubmenuOpen)
{
handled = RibbonHelper.NavigateToNextMenuItemOrGallery(this, -1, BringIndexIntoView);
}
break;
case Key.End:
if (IsSubmenuOpen)
{
handled = RibbonHelper.NavigateToPreviousMenuItemOrGallery(this, -1, BringIndexIntoView);
}
break;
}
e.Handled = handled;
}
else
{
if (e.Key == Key.Space)
{
OnClick();
e.Handled = true;
}
}
if( !e.Handled &&
e.Key != Key.Left &&
e.Key != Key.Right &&
e.Key != Key.Tab)
base.OnKeyDown(e);
}
protected override void OnPreviewKeyUp(KeyEventArgs e)
{
if (e.Key == _handleNextUpKey)
{
// Space/Enter key down opens the dropdown and sets focus
// on the first child. Such a child (gallery item) may handle
// key up of Space/Enter and select self closing the dropdown.
// Hence we eat away the first up of space/enter in such case.
e.Handled = true;
_handleNextUpKey = Key.None;
}
base.OnPreviewKeyUp(e);
}
/// <summary>
/// Called when the focus is no longer on or within this element.
/// </summary>
protected override void OnIsKeyboardFocusWithinChanged(DependencyPropertyChangedEventArgs e)
{
// Do not call base, since its selection logic interferes with ours.
// base.OnIsKeyboardFocusWithinChanged(e);
if (IsKeyboardFocusWithin && !RibbonIsSelected)
{
// If an item within us got focus (probably programatically), we need to become selected
RibbonIsSelected = true;
}
}
protected override void OnGotKeyboardFocus(KeyboardFocusChangedEventArgs e)
{
// Do not call base, since its selection logic interferes with ours.
// base.OnGotKeyboardFocus(e);
FrameworkElement ribbonCurrentSelection = RibbonCurrentSelection;
if (ribbonCurrentSelection != null &&
IsSubmenuOpen)
{
UIElement popupChild = _popup.TryGetChild();
if (popupChild != null &&
!popupChild.IsKeyboardFocusWithin)
{
// If the drop down is open and the ribbonCurrentSelection is valid
// but still popup doesnt have focus within,
// then focus the current selection.
ribbonCurrentSelection.Focus();
}
}
}
protected override void OnLostKeyboardFocus(KeyboardFocusChangedEventArgs e)
{
base.OnLostKeyboardFocus(e);
if (e.OriginalSource == this)
{
Dispatcher.BeginInvoke(
(Action)delegate()
{
if (!IsKeyboardFocusWithin && !InContextMenu)
{
RibbonIsSelected = false;
}
},
DispatcherPriority.Input,
null);
}
}
protected override void OnMouseLeftButtonDown(MouseButtonEventArgs e)
{
if (Role == MenuItemRole.TopLevelHeader && IsSubmenuOpen)
{
// For TopLevelHeader menu items, base closes the submenu on mouse down.
// Hence do the needed and handle the event.
UpdateIsPressed();
e.Handled = true;
}
base.OnMouseLeftButtonDown(e);
}
/// <summary>
/// Used by the derived classes to place popup properly.
/// </summary>
internal Popup Popup
{
get { return _popup; }
}
#endregion
#region Dropdown resizing
void OnPopupResizeStarted(object sender, DragStartedEventArgs e)
{
RibbonDropDownHelper.OnPopupResizeStarted(_itemsPresenter);
// Clear selection and close submenus when resizing.
if (RibbonCurrentSelection != null)
{
RibbonMenuItem selectedMenuItem = RibbonCurrentSelection as RibbonMenuItem;
RibbonCurrentSelection = null;
if (selectedMenuItem != null)
{
selectedMenuItem.IsSubmenuOpen = false;
}
}
e.Handled = true;
}
void OnPopupResize(object sender, DragDeltaEventArgs e)
{
RibbonDropDownHelper.ResizePopup(_itemsPresenter,
RibbonDropDownHelper.GetMinDropDownSize(_itemsHost, _popup, BorderThickness),
CanUserResizeHorizontally,
CanUserResizeVertically,
IsDropDownPositionedLeft,
false /*IsDropDownPositionedAbove */,
_screenBounds,
_popupRoot,
e.HorizontalChange,
e.VerticalChange);
e.Handled = true;
}
/// <summary>
/// Called from UIA Peers.
/// </summary>
/// <param name="newWidth"></param>
/// <param name="newHeight"></param>
/// <returns></returns>
internal bool ResizePopupInternal(double newWidth, double newHeight)
{
if (double.IsNaN(_itemsPresenter.Width) || double.IsNaN(_itemsPresenter.Height))
{
RibbonDropDownHelper.OnPopupResizeStarted(_itemsPresenter);
}
double horizontalDelta = newWidth - _itemsPresenter.Width;
double verticalDelta = newHeight - _itemsPresenter.Height;
return RibbonDropDownHelper.ResizePopup(_itemsPresenter,
RibbonDropDownHelper.GetMinDropDownSize(_itemsHost, _popup, BorderThickness),
CanUserResizeHorizontally,
CanUserResizeVertically,
IsDropDownPositionedLeft,
false /* IsDropDownPositionedAbove */,
_screenBounds,
_popupRoot,
horizontalDelta,
verticalDelta);
}
#endregion
#region Private Methods
private void SetTimerToOpenSubmenu()
{
if (IsSubmenuOpen)
{
StopTimer(ref _closeSubmenuTimer);
}
else
{
if (_openSubmenuTimer == null)
{
_openSubmenuTimer = new DispatcherTimer(DispatcherPriority.Normal);
_openSubmenuTimer.Tick += (EventHandler)delegate(object sender, EventArgs e)
{
StopTimer(ref _openSubmenuTimer);
OpenSubmenu();
KeyTipService.DismissKeyTips();
};
}
else
{
_openSubmenuTimer.Stop();
}
StartTimer(_openSubmenuTimer);
}
}
internal void SetTimerToCloseSubmenu()
{
if (!IsSubmenuOpen)
{
StopTimer(ref _openSubmenuTimer);
}
else
{
if (_closeSubmenuTimer == null)
{
_closeSubmenuTimer = new DispatcherTimer(DispatcherPriority.Normal);
_closeSubmenuTimer.Tick += (EventHandler)delegate(object sender, EventArgs e)
{
StopTimer(ref _closeSubmenuTimer);
CloseSubmenu();
};
}
else
{
_closeSubmenuTimer.Stop();
}
StartTimer(_closeSubmenuTimer);
}
}
private static void StopTimer(ref DispatcherTimer timer)
{
if (timer != null)
{
timer.Stop();
timer = null;
}
}
private void StartTimer(DispatcherTimer timer)
{
Debug.Assert(timer != null, "timer should not be null.");
Debug.Assert(!timer.IsEnabled, "timer should not be running.");
if (timer == _closeSubmenuTimer)
{
timer.Interval = TimeSpan.FromMilliseconds(SystemParameters.MenuShowDelay + CloseSubmenuTimerDelayBuffer);
}
else
{
timer.Interval = TimeSpan.FromMilliseconds(SystemParameters.MenuShowDelay);
}
timer.Start();
}
internal DispatcherTimer CloseSubmenuTimer
{
get { return _closeSubmenuTimer; }
}
// Please see RibbonApplicationMenuItem's
// override for this property for an explanation.
internal virtual int CloseSubmenuTimerDelayBuffer
{
get { return 0; }
}
private void OpenRibbonSubmenuWithKeyboard()
{
OpenSubmenu();
// Select first Item.
RibbonHelper.NavigateToNextMenuItemOrGallery(this, -1, BringIndexIntoView);
}
private void OpenSubmenu()
{
if (CanOpenSubMenu)
{
IsSubmenuOpen = true;
}
}
internal virtual bool CanOpenSubMenu
{
get
{
return (HasItems && !IsCheckable);
}
}
private void CloseSubmenu()
{
IsSubmenuOpen = false;
}
internal void BringIndexIntoView(int index)
{
if (_itemsHost != null)
{
_itemsHost.BringIndexIntoViewInternal(index);
}
}
private static bool IsContainerFocusable(FrameworkElement container)
{
return container != null && container.Focusable;
}
private static void OnIsCheckedChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
RibbonMenuItemAutomationPeer peer = UIElementAutomationPeer.FromElement((RibbonMenuItem)d) as RibbonMenuItemAutomationPeer;
if (peer != null)
{
peer.RaiseToggleStatePropertyChangedEvent((bool)e.OldValue, (bool)e.NewValue);
}
}
private static void OnIsSubmenuOpenChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
RibbonMenuItem menuItem = (RibbonMenuItem)sender;
// If the drop down is closed due to
// an action of context menu or if the
// ContextMenu for a parent
// was opened by right clicking this
// instance then ContextMenuClosed
// event is never raised.
// Hence reset the flag.
menuItem.InContextMenu = false;
if ((bool)e.OldValue)
{
StopTimer(ref menuItem._closeSubmenuTimer);
if (menuItem.IsMouseOver && menuItem.CanOpenSubMenu)
{
// If the mouse is inside the subtree, then we will get a mouse leave, but we want to ignore it
// to maintain the highlight.
menuItem.IgnoreNextMouseLeave = true;
}
}
else
{
StopTimer(ref menuItem._openSubmenuTimer);
// Clear local values
// so that when DropDown opens it shows in it original size and PlacementMode
if (menuItem._itemsPresenter != null)
{
menuItem._itemsPresenter.ClearValue(FrameworkElement.HeightProperty);
menuItem._itemsPresenter.ClearValue(FrameworkElement.WidthProperty);
}
menuItem._popupOffsetY = double.NaN;
// DropDownHeight refers to the initial Height of the popup
// The size of the popup can change dynamically by resizing.
if (menuItem._itemsPresenter != null && menuItem.HasGallery )
{
menuItem._itemsPresenter.Height = menuItem.DropDownHeight;
}
// IsDropDownPositionedLeft is updated asynchronously.
// As a result the resize thumb would change position and we could see a visual artifact of this change after Popup opens.
menuItem.Dispatcher.BeginInvoke(new DispatcherOperationCallback(menuItem.UpdateDropDownPosition), DispatcherPriority.Loaded, new object[] { null });
}
menuItem.RibbonCurrentSelection = null;
RibbonMenuItemAutomationPeer peer = UIElementAutomationPeer.FromElement(menuItem) as RibbonMenuItemAutomationPeer;
if (peer != null)
{
peer.RaiseExpandCollapseAutomationEvent((bool)e.OldValue, (bool)e.NewValue);
}
}
private object UpdateDropDownPosition(object arg)
{
if (_popup != null)
{
UIElement popupChild = _popup.TryGetChild();
if (popupChild != null)
{
Point targetTopLeftCorner = this.PointToScreen(new Point());
Point popupTopLeftCorner = popupChild.PointToScreen(new Point());
bool isDropDownPhysicallyPositionedLeft = DoubleUtil.LessThanOrClose(popupTopLeftCorner.X, targetTopLeftCorner.X);
IsDropDownPositionedLeft =
(isDropDownPhysicallyPositionedLeft && FlowDirection == FlowDirection.LeftToRight) ||
(!isDropDownPhysicallyPositionedLeft && FlowDirection == FlowDirection.RightToLeft);
// Cache top edge of the popup
_popupOffsetY = targetTopLeftCorner.Y - popupTopLeftCorner.Y;
}
}
// Cache the screen bounds of the monitor in which the dropdown is opened
_screenBounds = RibbonDropDownHelper.GetScreenBounds(_itemsPresenter, _popup);
// Also cache the PopupRoot if opened for the first time
if (_popupRoot == null && _itemsPresenter != null)
{
_popupRoot = TreeHelper.FindVisualRoot(_itemsPresenter) as UIElement;
}
return null;
}
private CustomPopupPlacement[] PlacePopup(Size popupSize, Size targetSize, Point offset)
{
double popupChildMargin = 0.0;
FrameworkElement popupChild;
if ((popupChild = _popup.Child as FrameworkElement) != null)
{
popupChildMargin = (FlowDirection == FlowDirection.LeftToRight) ? popupChild.Margin.Left : popupChild.Margin.Right ;
}
if (double.IsNaN(_popupOffsetY))
{
// Popup is opened for the first time, there could be two positions.
// to logical right of Target or logical left of Target
CustomPopupPlacement logicalRightPosition;
CustomPopupPlacement logicalLeftPosition;
if (FlowDirection == FlowDirection.LeftToRight)
{
logicalRightPosition = new CustomPopupPlacement(new Point(targetSize.Width, offset.Y), PopupPrimaryAxis.Vertical);
logicalLeftPosition = new CustomPopupPlacement(new Point(-popupSize.Width - popupChildMargin, offset.Y), PopupPrimaryAxis.Vertical);
}
else
{
logicalRightPosition = new CustomPopupPlacement(new Point(-targetSize.Width - popupSize.Width - popupChildMargin, offset.Y), PopupPrimaryAxis.Vertical);
logicalLeftPosition = new CustomPopupPlacement(new Point(- popupChildMargin, offset.Y), PopupPrimaryAxis.Vertical);
}
return new CustomPopupPlacement[] { logicalRightPosition, logicalLeftPosition };
}
// Either resizing or when popup contents changed in size (e.g. Gallery filtering)
// Top edge should remain constant constant
double topEdge = _popupOffsetY + offset.Y;
if (!IsDropDownPositionedLeft)
{
if (FlowDirection == FlowDirection.LeftToRight)
{
// Anchor to right side of Target
return new CustomPopupPlacement[] { new CustomPopupPlacement(new Point(targetSize.Width, -topEdge), PopupPrimaryAxis.Vertical) };
}
else
{
// Anchor to logical right side of Target
return new CustomPopupPlacement[] { new CustomPopupPlacement(new Point(-targetSize.Width - popupSize.Width - popupChildMargin, -topEdge), PopupPrimaryAxis.Vertical) };
}
}
else
{
if (FlowDirection == FlowDirection.LeftToRight)
{
// Anchor to left side of Target
return new CustomPopupPlacement[] { new CustomPopupPlacement(new Point(-popupSize.Width - popupChildMargin, -topEdge), PopupPrimaryAxis.Vertical) };
}
else
{
// Anchor to logical left side of Target
return new CustomPopupPlacement[] { new CustomPopupPlacement(new Point(-popupChildMargin, -topEdge), PopupPrimaryAxis.Vertical) };
}
}
}
internal RibbonMenuItemsPanel InternalItemsHost
{
get
{
return _itemsHost;
}
set
{
_itemsHost = value;
}
}
#endregion
#region Selection
/// <summary>
/// Return the current sibling of this MenuItem -- the
/// RibbonCurrentSelection of the parent as long as it isn't us.
/// </summary>
private FrameworkElement CurrentSibling
{
get
{
ItemsControl parent = ItemsControlFromItemContainer(this);
RibbonMenuItem menuItemParent = parent as RibbonMenuItem;
FrameworkElement sibling = null;
if (menuItemParent != null)
{
sibling = menuItemParent.RibbonCurrentSelection;
}
else
{
RibbonMenuButton menuButtonParent = parent as RibbonMenuButton;
if (menuButtonParent != null)
{
sibling = menuButtonParent.RibbonCurrentSelection;
}
}
if (sibling == this)
{
sibling = null;
}
return sibling;
}
}
/// <summary>
/// True if this MenuItem is the current MenuItem of its parent.
/// Focus drives Selection, but not vice versa. This will enable
/// focusless menus.
///
/// We use the Ribbon prefix to disambiguate this property from MenuItem.IsSelected.
/// </summary>
internal bool RibbonIsSelected
{
get { return (bool)GetValue(RibbonIsSelectedProperty); }
set { SetValue(RibbonIsSelectedProperty, value); }
}
/// <summary>
/// DependencyProperty for RibbonIsSelected property.
/// </summary>
internal static readonly DependencyProperty RibbonIsSelectedProperty = DependencyProperty.Register("RibbonIsSelected",
typeof(bool),
typeof(RibbonMenuItem),
new FrameworkPropertyMetadata(false,
new PropertyChangedCallback(OnRibbonIsSelectedChanged)));
private static void OnRibbonIsSelectedChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
RibbonMenuItem menuItem = (RibbonMenuItem)d;
// When RibbonIsSelected changes, IsHighlighted should reflect RibbonIsSelected
menuItem.IsHighlighted = (bool)e.NewValue;
if (menuItem.RibbonIsSelected)
{
StopTimer(ref menuItem._closeSubmenuTimer);
}
else
{
menuItem.SetTimerToCloseSubmenu();
}
menuItem.RaiseEvent(new RoutedPropertyChangedEventArgs<bool>((bool)e.OldValue, (bool)e.NewValue, RibbonMenuButton.RibbonIsSelectedChangedEvent));
}
/// <summary>
/// Called when RibbonIsSelected changed on this element or any descendant.
/// </summary>
private static void OnRibbonIsSelectedChanged(object sender, RoutedPropertyChangedEventArgs<bool> e)
{
// If RibbonIsSelected changed on a child of the MenuItem, change RibbonCurrentSelection
// to the element that sent the event and handle the event.
if (sender != e.OriginalSource)
{
RibbonMenuItem menuItem = (RibbonMenuItem)sender;
FrameworkElement selectionItem = e.OriginalSource as FrameworkElement;
if (e.NewValue)
{
if (selectionItem != null)
{
ItemsControl parentItemsControl = ItemsControl.ItemsControlFromItemContainer(selectionItem);
if (menuItem == parentItemsControl)
{
menuItem.RibbonCurrentSelection = selectionItem;
}
}
}
else
{
// If the item is no longer selected
// If the MenuItem has been deselected and it's the RibbonCurrentSelection,
// set our RibbonCurrentSelection to null.
if (menuItem.RibbonCurrentSelection == selectionItem)
{
menuItem.RibbonCurrentSelection = null;
}
}
e.Handled = true;
}
}
/// <summary>
/// Tracks the current selection in the items collection (i.e. submenu or gallery)
/// of this MenuItem.
///
/// We use the Ribbon prefix to disambiguate this property from MenuItem.CurrentSelection.
/// </summary>
private FrameworkElement RibbonCurrentSelection
{
get
{
return _ribbonCurrentSelection;
}
set
{
if (_ribbonCurrentSelection != value)
{
RibbonMenuItem selectedMenuItem = _ribbonCurrentSelection as RibbonMenuItem;
if (selectedMenuItem != null)
{
selectedMenuItem.RibbonIsSelected = false;
}
else
{
RibbonGallery selectedGallery = _ribbonCurrentSelection as RibbonGallery;
if (selectedGallery != null)
{
selectedGallery.RibbonIsSelected = false;
}
}
_ribbonCurrentSelection = value;
selectedMenuItem = _ribbonCurrentSelection as RibbonMenuItem;
if (selectedMenuItem != null)
{
selectedMenuItem.RibbonIsSelected = true;
}
else
{
RibbonGallery selectedGallery = _ribbonCurrentSelection as RibbonGallery;
if (selectedGallery != null)
{
selectedGallery.RibbonIsSelected = true;
}
}
}
}
}
#endregion
#region Private Data
private const string ResizeThumbTemplatePartName = "PART_ResizeThumb";
private const string ItemsPresenterTemplatePartName = "ItemsPresenter";
private const string PopupTemplatePartName = "PART_Popup";
internal const string SideBarBorderTemplatePartName = "PART_SideBarBorder";
private const string SubMenuScrollViewerTemplatePartName = "PART_SubMenuScrollViewer";
DispatcherTimer _closeSubmenuTimer, _openSubmenuTimer;
private Thumb _resizeThumb;
private ItemsPresenter _itemsPresenter;
RibbonMenuItemsPanel _itemsHost;
private Popup _popup;
private FrameworkElement _ribbonCurrentSelection; // can be a RibbonMenuItem or RibbonGallery
Rect _screenBounds;
private UIElement _popupRoot;
private UIElement _sideBarBorder = null;
private ScrollViewer _submenuScrollViewer;
private int _galleryCount;
double _popupOffsetY;
private Key _handleNextUpKey = Key.None;
private BitVector32 _bits = new BitVector32(0);
private enum Bits
{
AreKeyTipAndContentInSync = 0x01,
IsKeyTipSyncSource = 0x02,
SyncingKeyTipAndContent = 0x04,
IgnoreNextMouseLeave = 0x08,
InContextMenu = 0x10
}
bool ISyncKeyTipAndContent.KeepKeyTipAndContentInSync
{
get { return _bits[(int)Bits.AreKeyTipAndContentInSync]; }
set { _bits[(int)Bits.AreKeyTipAndContentInSync] = value; }
}
bool ISyncKeyTipAndContent.IsKeyTipSyncSource
{
get { return _bits[(int)Bits.IsKeyTipSyncSource]; }
set { _bits[(int)Bits.IsKeyTipSyncSource] = value; }
}
bool ISyncKeyTipAndContent.SyncingKeyTipAndContent
{
get { return _bits[(int)Bits.SyncingKeyTipAndContent]; }
set { _bits[(int)Bits.SyncingKeyTipAndContent] = value; }
}
bool IgnoreNextMouseLeave
{
get { return _bits[(int)Bits.IgnoreNextMouseLeave]; }
set { _bits[(int)Bits.IgnoreNextMouseLeave] = value; }
}
bool InContextMenu
{
get { return _bits[(int)Bits.InContextMenu]; }
set { _bits[(int)Bits.InContextMenu] = value; }
}
#endregion
#region DismissPopup
protected override void OnClick()
{
base.OnClick();
// If StaysOpenOnClick is true we should not be dismissing Popups.
if (!StaysOpenOnClick)
{
if (Role == MenuItemRole.SubmenuItem || Role == MenuItemRole.TopLevelItem)
{
// Dismiss parent Popups
RaiseEvent(new RibbonDismissPopupEventArgs());
}
}
}
private static void OnDismissPopupThunk(object sender, RibbonDismissPopupEventArgs e)
{
RibbonMenuItem ribbonMenuItem = (RibbonMenuItem)sender;
ribbonMenuItem.OnDismissPopup(e);
}
internal virtual void OnDismissPopup(RibbonDismissPopupEventArgs e)
{
// For a RibbonSplitMenuItem we will receive a DismissPopup notification
// when the header is clicked. We need to handle that event and render
// the operation cancelled in the StaysOpenOnClick scenario so that the
// Popups further up th chain aren't dismissed.
UIElement popupChild = _popup.TryGetChild();
RibbonHelper.HandleDismissPopup(e,
delegate(bool value) { IsSubmenuOpen = value; },
delegate(DependencyObject d) { return StaysOpenOnClick && e.DismissMode == RibbonDismissPopupMode.Always; },
popupChild,
this);
}
private static void OnClickThroughThunk(object sender, MouseButtonEventArgs e)
{
RibbonMenuItem ribbonMenuItem = (RibbonMenuItem)sender;
ribbonMenuItem.OnClickThrough(e);
}
private void OnClickThrough(MouseButtonEventArgs e)
{
UIElement popupChild = _popup.TryGetChild();
RibbonHelper.HandleClickThrough(this, e, popupChild);
}
#endregion DismissPopup
#region UI Automation
protected override AutomationPeer OnCreateAutomationPeer()
{
return new RibbonMenuItemAutomationPeer(this);
}
internal void ClickItemInternal()
{
OnClick();
}
#endregion
#region QAT
/// <summary>
/// DependencyProperty for QuickAccessToolBarId property.
/// </summary>
public static readonly DependencyProperty QuickAccessToolBarIdProperty =
RibbonControlService.QuickAccessToolBarIdProperty.AddOwner(typeof(RibbonMenuItem));
/// <summary>
/// This property is used as a unique identifier to link a control in the Ribbon with its counterpart in the QAT.
/// </summary>
public object QuickAccessToolBarId
{
get { return RibbonControlService.GetQuickAccessToolBarId(this); }
set { RibbonControlService.SetQuickAccessToolBarId(this, value); }
}
/// <summary>
/// DependencyProperty for CanAddToQuickAccessToolBarDirectly property.
/// </summary>
public static readonly DependencyProperty CanAddToQuickAccessToolBarDirectlyProperty =
RibbonControlService.CanAddToQuickAccessToolBarDirectlyProperty.AddOwner(typeof(RibbonMenuItem),
new FrameworkPropertyMetadata(true));
/// <summary>
/// Property determining whether a control can be added to the RibbonQuickAccessToolBar directly.
/// </summary>
public bool CanAddToQuickAccessToolBarDirectly
{
get { return RibbonControlService.GetCanAddToQuickAccessToolBarDirectly(this); }
set { RibbonControlService.SetCanAddToQuickAccessToolBarDirectly(this, value); }
}
#endregion QAT
#region KeyTips
internal UIElement SideBarBorder
{
get
{
return _sideBarBorder;
}
}
/// <summary>
/// DependencyProperty for KeyTip property.
/// </summary>
public static readonly DependencyProperty KeyTipProperty =
KeyTipService.KeyTipProperty.AddOwner(typeof(RibbonMenuItem),
new FrameworkPropertyMetadata(null, new PropertyChangedCallback(OnKeyTipChanged), new CoerceValueCallback(CoerceKeyTip)));
/// <summary>
/// KeyTip string for the control.
/// </summary>
public string KeyTip
{
get { return KeyTipService.GetKeyTip(this); }
set { KeyTipService.SetKeyTip(this, value); }
}
internal void SyncKeyTipAndContent()
{
KeyTipAndContentSyncHelper.Sync(this, HeaderProperty);
}
private static void OnKeyTipChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
KeyTipAndContentSyncHelper.OnKeyTipChanged((ISyncKeyTipAndContent)d, HeaderProperty);
}
private static object CoerceKeyTip(DependencyObject d, object baseValue)
{
return KeyTipAndContentSyncHelper.CoerceKeyTip((ISyncKeyTipAndContent)d, baseValue, HeaderProperty);
}
private static void OnHeaderChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
KeyTipAndContentSyncHelper.OnContentPropertyChanged((ISyncKeyTipAndContent)d, HeaderProperty);
}
private static object CoerceHeader(DependencyObject d, object baseValue)
{
return KeyTipAndContentSyncHelper.CoerceContentProperty((ISyncKeyTipAndContent)d, baseValue);
}
private static void OnActivatingKeyTipThunk(object sender, ActivatingKeyTipEventArgs e)
{
((RibbonMenuItem)sender).OnActivatingKeyTip(e);
}
protected virtual void OnActivatingKeyTip(ActivatingKeyTipEventArgs e)
{
if (e.OriginalSource == this)
{
e.KeyTipHorizontalPlacement = KeyTipHorizontalPlacement.KeyTipLeftAtTargetCenter;
e.KeyTipVerticalPlacement = KeyTipVerticalPlacement.KeyTipTopAtTargetCenter;
e.KeyTipHorizontalOffset = e.KeyTipVerticalOffset = 0;
e.PlacementTarget = _sideBarBorder;
}
}
private static void OnKeyTipAccessedThunk(object sender, KeyTipAccessedEventArgs e)
{
((RibbonMenuItem)sender).OnKeyTipAccessed(e);
}
protected virtual void OnKeyTipAccessed(KeyTipAccessedEventArgs e)
{
if (e.OriginalSource == this)
{
if (CanOpenSubMenu)
{
FocusOrSelect();
IsSubmenuOpen = true;
RibbonHelper.NavigateToNextMenuItemOrGallery(this, -1, BringIndexIntoView);
UIElement popupChild = _popup.TryGetChild();
if (popupChild != null)
{
KeyTipService.SetIsKeyTipScope(popupChild, true);
e.TargetKeyTipScope = popupChild;
}
}
else
{
OnClick();
}
e.Handled = true;
}
}
#endregion
#region Context Menu
private static void OnContextMenuOpeningThunk(object sender, ContextMenuEventArgs e)
{
((RibbonMenuItem)sender).OnContextMenuOpeningInternal();
}
private void OnContextMenuOpeningInternal()
{
if (CanOpenSubMenu)
{
// Track whether a non-leaf menuitem is in
// context menu so that its submenu is
// not dismissed due to lost focus.
InContextMenu = true;
}
}
private static void OnContextMenuClosingThunk(object sender, ContextMenuEventArgs e)
{
((RibbonMenuItem)sender).OnContextMenuClosingInternal();
}
private void OnContextMenuClosingInternal()
{
InContextMenu = false;
}
#endregion
}
}
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