Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / wpf / src / Framework / System / Windows / Controls / ToolBar.cs / 1 / ToolBar.cs
//----------------------------------------------------------------------------
//
// Copyright (C) Microsoft Corporation. All rights reserved.
//
//---------------------------------------------------------------------------
using System;
using System.Collections.Specialized;
using System.ComponentModel;
using System.Diagnostics;
using System.Windows.Threading;
using System.Windows;
using System.Windows.Automation;
using System.Windows.Automation.Peers;
using System.Windows.Controls.Primitives;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Markup;
using System.Windows.Shapes;
using MS.Utility;
using MS.Internal.KnownBoxes;
namespace System.Windows.Controls
{
#region public enum types
///
/// Defines how we place the toolbar items
///
public enum OverflowMode
{
///
/// specifies that the item moves between the main and the overflow panels as space permits
///
AsNeeded,
///
/// specifies that the item is permanently placed in the overflow panel
///
Always,
///
/// specifies that the item is never allowed to overflow
///
Never
// NOTE: if you add or remove any values in this enum, be sure to update ToolBar.IsValidOverflowMode()
}
#endregion public enum types
///
/// ToolBar provides an overflow mechanism which places any items that doesnt fit naturally
/// fit within a size-constrained ToolBar into a special overflow area.
/// Also, ToolBars have a tight relationship with the related ToolBarTray control.
///
[TemplatePart(Name = "PART_ToolBarPanel", Type = typeof(ToolBarPanel))]
[TemplatePart(Name = "PART_ToolBarOverflowPanel", Type = typeof(ToolBarOverflowPanel))]
public class ToolBar : HeaderedItemsControl
{
#region Constructors
static ToolBar()
{
// Disable tooltips on toolbar when the overflow is open
ToolTipService.IsEnabledProperty.OverrideMetadata(typeof(ToolBar), new FrameworkPropertyMetadata(null, new CoerceValueCallback(CoerceToolTipIsEnabled)));
DefaultStyleKeyProperty.OverrideMetadata(typeof(ToolBar), new FrameworkPropertyMetadata(typeof(ToolBar)));
_dType = DependencyObjectType.FromSystemTypeInternal(typeof(ToolBar));
IsTabStopProperty.OverrideMetadata(typeof(ToolBar), new FrameworkPropertyMetadata(MS.Internal.KnownBoxes.BooleanBoxes.FalseBox));
FocusableProperty.OverrideMetadata(typeof(ToolBar), new FrameworkPropertyMetadata(MS.Internal.KnownBoxes.BooleanBoxes.FalseBox));
KeyboardNavigation.DirectionalNavigationProperty.OverrideMetadata(typeof(ToolBar), new FrameworkPropertyMetadata(KeyboardNavigationMode.Cycle));
KeyboardNavigation.TabNavigationProperty.OverrideMetadata(typeof(ToolBar), new FrameworkPropertyMetadata(KeyboardNavigationMode.Cycle));
KeyboardNavigation.ControlTabNavigationProperty.OverrideMetadata(typeof(ToolBar), new FrameworkPropertyMetadata(KeyboardNavigationMode.Once));
FocusManager.IsFocusScopeProperty.OverrideMetadata(typeof(ToolBar), new FrameworkPropertyMetadata(BooleanBoxes.TrueBox));
EventManager.RegisterClassHandler(typeof(ToolBar), Mouse.MouseDownEvent, new MouseButtonEventHandler(OnMouseButtonDown), true);
EventManager.RegisterClassHandler(typeof(ToolBar), ButtonBase.ClickEvent, new RoutedEventHandler(_OnClick));
}
///
/// Default ToolBar constructor
///
///
/// Automatic determination of current Dispatcher. Use alternative constructor
/// that accepts a Dispatcher for best performance.
///
public ToolBar() : base()
{
}
#endregion
#region Properties
#region Orientation
///
/// Property key for OrientationProperty.
///
private static readonly DependencyPropertyKey OrientationPropertyKey =
DependencyProperty.RegisterAttachedReadOnly(
"Orientation",
typeof(Orientation),
typeof(ToolBar),
new FrameworkPropertyMetadata(
Orientation.Horizontal,
null,
new CoerceValueCallback(CoerceOrientation)));
///
/// Specifies the orientation (horizontal or vertical) of the flow
///
public static readonly DependencyProperty OrientationProperty =
OrientationPropertyKey.DependencyProperty;
private static object CoerceOrientation(DependencyObject d, object value)
{
ToolBarTray toolBarTray = ((ToolBar) d).ToolBarTray;
return (toolBarTray != null) ? toolBarTray.Orientation : value;
}
///
/// Specifies the orientation of the ToolBar. This read-only property get its value from the ToolBarTray parent
///
public Orientation Orientation
{
get
{
return (Orientation) GetValue(OrientationProperty);
}
}
#endregion Orientation
#region Band
///
/// Specify the band number where ToolBar should be located withing the ToolBarTray
///
public static readonly DependencyProperty BandProperty =
DependencyProperty.Register(
"Band",
typeof(int),
typeof(ToolBar),
new FrameworkPropertyMetadata(
0,
FrameworkPropertyMetadataOptions.AffectsParentMeasure));
///
/// Specify the band number where ToolBar should be located withing the ToolBarTray
///
///
/// Specify the band index number where ToolBar should be located within the band of ToolBarTray
///
public static readonly DependencyProperty BandIndexProperty =
DependencyProperty.Register(
"BandIndex",
typeof(int),
typeof(ToolBar),
new FrameworkPropertyMetadata(
0,
FrameworkPropertyMetadataOptions.AffectsParentMeasure));
///
/// Specify the band index number where ToolBar should be located withing the band of ToolBarTray
///
///
/// DependencyProperty for IsOverflowOpen
///
public static readonly DependencyProperty IsOverflowOpenProperty =
DependencyProperty.Register(
"IsOverflowOpen",
typeof(bool),
typeof(ToolBar),
new FrameworkPropertyMetadata(
BooleanBoxes.FalseBox,
FrameworkPropertyMetadataOptions.BindsTwoWayByDefault,
new PropertyChangedCallback(OnOverflowOpenChanged),
new CoerceValueCallback(CoerceIsOverflowOpen)));
///
/// Whether or not the "popup" for this control is currently open
///
[Bindable(true), Browsable(false), Category("Appearance")]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public bool IsOverflowOpen
{
get { return (bool) GetValue(IsOverflowOpenProperty); }
set { SetValue(IsOverflowOpenProperty, BooleanBoxes.Box(value)); }
}
private static object CoerceIsOverflowOpen(DependencyObject d, object value)
{
if ((bool)value)
{
ToolBar tb = (ToolBar)d;
if (!tb.IsLoaded)
{
tb.RegisterToOpenOnLoad();
return BooleanBoxes.FalseBox;
}
}
return value;
}
private static object CoerceToolTipIsEnabled(DependencyObject d, object value)
{
ToolBar tb = (ToolBar) d;
return tb.IsOverflowOpen ? BooleanBoxes.FalseBox : value;
}
private void RegisterToOpenOnLoad()
{
Loaded += new RoutedEventHandler(OpenOnLoad);
}
private void OpenOnLoad(object sender, RoutedEventArgs e)
{
// Open overflow after toolbar has rendered (Loaded is fired before 1st render)
Dispatcher.BeginInvoke(DispatcherPriority.Input, new DispatcherOperationCallback(delegate(object param)
{
CoerceValue(IsOverflowOpenProperty);
return null;
}), null);
}
private static void OnOverflowOpenChanged(DependencyObject element, DependencyPropertyChangedEventArgs e)
{
ToolBar toolBar = (ToolBar) element;
if ((bool) e.NewValue)
{
// When the drop down opens, take capture
Mouse.Capture(toolBar, CaptureMode.SubTree);
toolBar.SetFocusOnToolBarOverflowPanel();
}
else
{
// If focus is still within the ToolBarOverflowPanel, make sure we the focus is restored to the main focus scope
ToolBarOverflowPanel overflow = toolBar.ToolBarOverflowPanel;
if (overflow != null && overflow.IsKeyboardFocusWithin)
{
Keyboard.Focus(null);
}
if (Mouse.Captured == toolBar)
{
Mouse.Capture(null);
}
}
toolBar.CoerceValue(ToolTipService.IsEnabledProperty);
}
private void SetFocusOnToolBarOverflowPanel()
{
Dispatcher.BeginInvoke(DispatcherPriority.Input, new DispatcherOperationCallback(delegate(object param)
{
if (ToolBarOverflowPanel != null)
{
// If the overflow is opened by keyboard - focus the first item
// otherwise - set focus on the panel itself
if (KeyboardNavigation.IsKeyboardMostRecentInputDevice())
{
ToolBarOverflowPanel.MoveFocus(new TraversalRequest(FocusNavigationDirection.Next));
}
else
{
ToolBarOverflowPanel.Focus();
}
}
return null;
}), null);
}
#endregion IsOverflowOpen
#region HasOverflowItems
///
/// The key needed set a read-only property.
///
internal static readonly DependencyPropertyKey HasOverflowItemsPropertyKey =
DependencyProperty.RegisterReadOnly(
"HasOverflowItems",
typeof(bool),
typeof(ToolBar),
new FrameworkPropertyMetadata(BooleanBoxes.FalseBox));
///
/// The DependencyProperty for the HasOverflowItems property.
/// Flags: None
/// Default Value: false
///
public static readonly DependencyProperty HasOverflowItemsProperty =
HasOverflowItemsPropertyKey.DependencyProperty;
///
/// Whether we have overflow items
///
public bool HasOverflowItems
{
get { return (bool) GetValue(HasOverflowItemsProperty); }
}
#endregion HasOverflowItems
#region IsOverflowItem
///
/// The key needed set a read-only property.
/// Attached property to indicate if the item is placed in the overflow panel
///
internal static readonly DependencyPropertyKey IsOverflowItemPropertyKey =
DependencyProperty.RegisterAttachedReadOnly(
"IsOverflowItem",
typeof(bool),
typeof(ToolBar),
new FrameworkPropertyMetadata(BooleanBoxes.FalseBox));
///
/// The DependencyProperty for the IsOverflowItem property.
/// Flags: None
/// Default Value: false
///
public static readonly DependencyProperty IsOverflowItemProperty =
IsOverflowItemPropertyKey.DependencyProperty;
///
/// Writes the attached property IsOverflowItem to the given element.
///
/// The element to which to write the attached property.
/// The property value to set
internal static void SetIsOverflowItem(DependencyObject element, object value)
{
element.SetValue(IsOverflowItemPropertyKey, value);
}
///
/// Reads the attached property IsOverflowItem from the given element.
///
/// The element from which to read the attached property.
/// The property's value.
public static bool GetIsOverflowItem(DependencyObject element)
{
if (element == null)
{
throw new ArgumentNullException("element");
}
return (bool)element.GetValue(IsOverflowItemProperty);
}
#endregion
#region OverflowMode
///
/// Attached property to indicate if the item should be placed in the overflow panel
///
public static readonly DependencyProperty OverflowModeProperty =
DependencyProperty.RegisterAttached(
"OverflowMode",
typeof(OverflowMode),
typeof(ToolBar),
new FrameworkPropertyMetadata(
OverflowMode.AsNeeded,
new PropertyChangedCallback(OnOverflowModeChanged)),
new ValidateValueCallback(IsValidOverflowMode));
private static void OnOverflowModeChanged(DependencyObject element, DependencyPropertyChangedEventArgs e)
{
// We need to invalidate the logical parent which is ToolBar
// because visual parent could be ToolBarPanel or ToolBarOverflowPanel
// Invalidating ToolBar cause to invalidate both panels
ToolBar toolBar = ItemsControl.ItemsControlFromItemContainer(element) as ToolBar;
if (toolBar != null)
{
// Reset the calculated min and max size
toolBar._minLength = toolBar._maxLength = 0d;
toolBar.InvalidateMeasure();
}
}
private static bool IsValidOverflowMode(object o)
{
OverflowMode value = (OverflowMode)o;
return value == OverflowMode.AsNeeded
|| value == OverflowMode.Always
|| value == OverflowMode.Never;
}
///
/// Writes the attached property OverflowMode to the given element.
///
/// The element to which to write the attached property.
/// The property value to set
public static void SetOverflowMode(DependencyObject element, OverflowMode mode)
{
if (element == null)
{
throw new ArgumentNullException("element");
}
element.SetValue(OverflowModeProperty, mode);
}
///
/// Reads the attached property OverflowMode from the given element.
///
/// The element from which to read the attached property.
/// The property's value.
[AttachedPropertyBrowsableForChildren(IncludeDescendants = true)]
public static OverflowMode GetOverflowMode(DependencyObject element)
{
if (element == null)
{
throw new ArgumentNullException("element");
}
return (OverflowMode)element.GetValue(OverflowModeProperty);
}
#endregion
#endregion Properties
#region Override methods
///
/// Creates AutomationPeer (
protected override AutomationPeer OnCreateAutomationPeer()
{
return new ToolBarAutomationPeer(this);
}
///
/// Prepare the element to display the item. This may involve
/// applying styles, setting bindings, etc.
///
protected override void PrepareContainerForItemOverride(DependencyObject element, object item)
{
base.PrepareContainerForItemOverride(element, item);
FrameworkElement fe = element as FrameworkElement;
if (fe != null)
{
bool hasModifiers;
BaseValueSourceInternal vs = fe.GetValueSource(StyleProperty, null, out hasModifiers);
Type feType = fe.GetType();
ResourceKey resourceKey = null;
if (feType == typeof(Button))
resourceKey = ButtonStyleKey;
else if (feType == typeof(ToggleButton))
resourceKey = ToggleButtonStyleKey;
else if (feType == typeof(Separator))
resourceKey = SeparatorStyleKey;
else if (feType == typeof(CheckBox))
resourceKey = CheckBoxStyleKey;
else if (feType == typeof(RadioButton))
resourceKey = RadioButtonStyleKey;
else if (feType == typeof(ComboBox))
resourceKey = ComboBoxStyleKey;
else if (feType == typeof(TextBox))
resourceKey = TextBoxStyleKey;
else if (feType == typeof(Menu))
resourceKey = MenuStyleKey;
if (resourceKey != null)
{
if (vs <= BaseValueSourceInternal.ImplicitReference)
fe.SetResourceReference(StyleProperty, resourceKey);
fe.DefaultStyleKey = resourceKey;
}
}
}
internal override void OnTemplateChangedInternal(FrameworkTemplate oldTemplate, FrameworkTemplate newTemplate)
{
// Invalidate template references
_toolBarPanel = null;
_toolBarOverflowPanel = null;
base.OnTemplateChangedInternal(oldTemplate, newTemplate);
}
///
/// This method is invoked when the Items property changes.
///
protected override void OnItemsChanged(NotifyCollectionChangedEventArgs e)
{
// Reset the calculated min and max size
_minLength = _maxLength = 0d;
base.OnItemsChanged(e);
}
///
/// Measure the content and store the desired size of the content
///
///
///
/// Called when this element loses mouse capture.
///
///
protected override void OnLostMouseCapture(MouseEventArgs e)
{
base.OnLostMouseCapture(e);
// ToolBar has a capture when its overflow panel is open
// close the overflow panel is case capture is set to null
if (Mouse.Captured == null)
{
Close();
}
}
#endregion Override methods
#region Private implementation
///
/// Gets reference to ToolBar's ToolBarPanel element.
///
internal ToolBarPanel ToolBarPanel
{
get
{
if (_toolBarPanel == null)
_toolBarPanel = FindToolBarPanel();
return _toolBarPanel;
}
}
private ToolBarPanel FindToolBarPanel()
{
DependencyObject child = GetTemplateChild(ToolBarPanelTemplateName);
ToolBarPanel toolBarPanel = child as ToolBarPanel;
if (child != null && toolBarPanel == null)
throw new NotSupportedException(SR.Get(SRID.ToolBar_InvalidStyle_ToolBarPanel, child.GetType()));
return toolBarPanel;
}
///
/// Gets reference to ToolBar's ToolBarOverflowPanel element.
///
internal ToolBarOverflowPanel ToolBarOverflowPanel
{
get
{
if (_toolBarOverflowPanel == null)
_toolBarOverflowPanel = FindToolBarOverflowPanel();
return _toolBarOverflowPanel;
}
}
private ToolBarOverflowPanel FindToolBarOverflowPanel()
{
DependencyObject child = GetTemplateChild(ToolBarOverflowPanelTemplateName);
ToolBarOverflowPanel toolBarOverflowPanel = child as ToolBarOverflowPanel;
if (child != null && toolBarOverflowPanel == null)
throw new NotSupportedException(SR.Get(SRID.ToolBar_InvalidStyle_ToolBarOverflowPanel, child.GetType()));
return toolBarOverflowPanel;
}
///
/// This is the method that responds to the KeyDown event.
///
///
protected override void OnKeyDown(KeyEventArgs e)
{
UIElement newFocusElement = null;
UIElement currentFocusElement = e.Source as UIElement;
if (currentFocusElement != null && ItemsControl.ItemsControlFromItemContainer(currentFocusElement) == this)
{
// itemsHost should be either ToolBarPanel or ToolBarOverflowPanel
Panel itemsHost = VisualTreeHelper.GetParent(currentFocusElement) as Panel;
if (itemsHost != null)
{
switch (e.Key)
{
// itemsHost.Children.Count is greater than zero because itemsHost is visual parent of currentFocusElement
case Key.Home:
newFocusElement = VisualTreeHelper.GetChild(itemsHost, 0) as UIElement;
break;
case Key.End:
newFocusElement = VisualTreeHelper.GetChild(itemsHost, VisualTreeHelper.GetChildrenCount(itemsHost)-1) as UIElement;
break;
case Key.Escape:
{
// If focus is within ToolBarOverflowPanel - move focus the the toggle button
ToolBarOverflowPanel overflow = ToolBarOverflowPanel;
if (overflow != null && overflow.IsKeyboardFocusWithin)
{
MoveFocus(new TraversalRequest(FocusNavigationDirection.Last));
}
else
{
Keyboard.Focus(null);
}
// Close the overflow the Esc is pressed
Close();
}
break;
}
if (newFocusElement != null)
{
if (newFocusElement.Focus())
e.Handled = true;
}
}
}
if (!e.Handled)
base.OnKeyDown(e);
}
private static void OnMouseButtonDown(object sender, MouseButtonEventArgs e)
{
ToolBar toolBar = (ToolBar)sender;
// Close the overflow for all unhandled mousedown in ToolBar
if (!e.Handled)
{
toolBar.Close();
e.Handled = true;
}
}
// ButtonBase.Click class handler
// When we get a click event from toolbar item - close the overflow panel
private static void _OnClick(object e, RoutedEventArgs args)
{
ToolBar toolBar = (ToolBar)e;
ButtonBase bb = args.OriginalSource as ButtonBase;
if (toolBar.IsOverflowOpen && bb != null && bb.Parent == toolBar)
toolBar.Close();
}
internal override void OnAncestorChanged()
{
// Orientation depends on the logical parent -- so invalidate it when that changes
CoerceValue(OrientationProperty);
}
private void Close()
{
if (IsOverflowOpen)
{
ClearValue(IsOverflowOpenProperty);
// Force Close in case of triggers
if (IsOverflowOpen)
IsOverflowOpen = false;
}
}
private ToolBarTray ToolBarTray
{
get
{
return Parent as ToolBarTray;
}
}
internal double MinLength
{
get { return _minLength; }
}
internal double MaxLength
{
get { return _maxLength; }
}
internal bool IsValidMinLength
{
get { return _minLength != 0d; }
}
internal bool IsValidMaxLength
{
get { return _maxLength != 0d; }
}
#endregion Private implementation
#region private data
private ToolBarPanel _toolBarPanel;
private ToolBarOverflowPanel _toolBarOverflowPanel;
private const string ToolBarPanelTemplateName = "PART_ToolBarPanel";
private const string ToolBarOverflowPanelTemplateName = "PART_ToolBarOverflowPanel";
private double _minLength = 0d;
private double _maxLength = 0d;
#endregion private data
#region DTypeThemeStyleKey
// Returns the DependencyObjectType for the registered ThemeStyleKey's default
// value. Controls will override this method to return approriate types.
internal override DependencyObjectType DTypeThemeStyleKey
{
get { return _dType; }
}
private static DependencyObjectType _dType;
#endregion DTypeThemeStyleKey
#region ItemsStyleKey
///
/// Resource Key for the ButtonStyle
///
public static ResourceKey ButtonStyleKey
{
get
{
if (_cacheButtonStyle == null)
{
_cacheButtonStyle = new SystemThemeKey(SystemResourceKeyID.ToolBarButtonStyle);
}
return _cacheButtonStyle;
}
}
private static SystemThemeKey _cacheButtonStyle;
///
/// Resource Key for the ToggleButtonStyle
///
public static ResourceKey ToggleButtonStyleKey
{
get
{
if (_cacheToggleButtonStyle == null)
{
_cacheToggleButtonStyle = new SystemThemeKey(SystemResourceKeyID.ToolBarToggleButtonStyle);
}
return _cacheToggleButtonStyle;
}
}
private static SystemThemeKey _cacheToggleButtonStyle;
///
/// Resource Key for the SeparatorStyle
///
public static ResourceKey SeparatorStyleKey
{
get
{
if (_cacheSeparatorStyle == null)
{
_cacheSeparatorStyle = new SystemThemeKey(SystemResourceKeyID.ToolBarSeparatorStyle);
}
return _cacheSeparatorStyle;
}
}
private static SystemThemeKey _cacheSeparatorStyle;
///
/// Resource Key for the CheckBoxStyle
///
public static ResourceKey CheckBoxStyleKey
{
get
{
if (_cacheCheckBoxStyle == null)
{
_cacheCheckBoxStyle = new SystemThemeKey(SystemResourceKeyID.ToolBarCheckBoxStyle);
}
return _cacheCheckBoxStyle;
}
}
private static SystemThemeKey _cacheCheckBoxStyle;
///
/// Resource Key for the RadioButtonStyle
///
public static ResourceKey RadioButtonStyleKey
{
get
{
if (_cacheRadioButtonStyle == null)
{
_cacheRadioButtonStyle = new SystemThemeKey(SystemResourceKeyID.ToolBarRadioButtonStyle);
}
return _cacheRadioButtonStyle;
}
}
private static SystemThemeKey _cacheRadioButtonStyle;
///
/// Resource Key for the ComboBoxStyle
///
public static ResourceKey ComboBoxStyleKey
{
get
{
if (_cacheComboBoxStyle == null)
{
_cacheComboBoxStyle = new SystemThemeKey(SystemResourceKeyID.ToolBarComboBoxStyle);
}
return _cacheComboBoxStyle;
}
}
private static SystemThemeKey _cacheComboBoxStyle;
///
/// Resource Key for the TextBoxStyle
///
public static ResourceKey TextBoxStyleKey
{
get
{
if (_cacheTextBoxStyle == null)
{
_cacheTextBoxStyle = new SystemThemeKey(SystemResourceKeyID.ToolBarTextBoxStyle);
}
return _cacheTextBoxStyle;
}
}
private static SystemThemeKey _cacheTextBoxStyle;
///
/// Resource Key for the MenuStyle
///
public static ResourceKey MenuStyleKey
{
get
{
if (_cacheMenuStyle == null)
{
_cacheMenuStyle = new SystemThemeKey(SystemResourceKeyID.ToolBarMenuStyle);
}
return _cacheMenuStyle;
}
}
private static SystemThemeKey _cacheMenuStyle;
#endregion ItemsStyleKey
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
//----------------------------------------------------------------------------
//
// Copyright (C) Microsoft Corporation. All rights reserved.
//
//---------------------------------------------------------------------------
using System;
using System.Collections.Specialized;
using System.ComponentModel;
using System.Diagnostics;
using System.Windows.Threading;
using System.Windows;
using System.Windows.Automation;
using System.Windows.Automation.Peers;
using System.Windows.Controls.Primitives;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Markup;
using System.Windows.Shapes;
using MS.Utility;
using MS.Internal.KnownBoxes;
namespace System.Windows.Controls
{
#region public enum types
///
/// Defines how we place the toolbar items
///
public enum OverflowMode
{
///
/// specifies that the item moves between the main and the overflow panels as space permits
///
AsNeeded,
///
/// specifies that the item is permanently placed in the overflow panel
///
Always,
///
/// specifies that the item is never allowed to overflow
///
Never
// NOTE: if you add or remove any values in this enum, be sure to update ToolBar.IsValidOverflowMode()
}
#endregion public enum types
///
/// ToolBar provides an overflow mechanism which places any items that doesnt fit naturally
/// fit within a size-constrained ToolBar into a special overflow area.
/// Also, ToolBars have a tight relationship with the related ToolBarTray control.
///
[TemplatePart(Name = "PART_ToolBarPanel", Type = typeof(ToolBarPanel))]
[TemplatePart(Name = "PART_ToolBarOverflowPanel", Type = typeof(ToolBarOverflowPanel))]
public class ToolBar : HeaderedItemsControl
{
#region Constructors
static ToolBar()
{
// Disable tooltips on toolbar when the overflow is open
ToolTipService.IsEnabledProperty.OverrideMetadata(typeof(ToolBar), new FrameworkPropertyMetadata(null, new CoerceValueCallback(CoerceToolTipIsEnabled)));
DefaultStyleKeyProperty.OverrideMetadata(typeof(ToolBar), new FrameworkPropertyMetadata(typeof(ToolBar)));
_dType = DependencyObjectType.FromSystemTypeInternal(typeof(ToolBar));
IsTabStopProperty.OverrideMetadata(typeof(ToolBar), new FrameworkPropertyMetadata(MS.Internal.KnownBoxes.BooleanBoxes.FalseBox));
FocusableProperty.OverrideMetadata(typeof(ToolBar), new FrameworkPropertyMetadata(MS.Internal.KnownBoxes.BooleanBoxes.FalseBox));
KeyboardNavigation.DirectionalNavigationProperty.OverrideMetadata(typeof(ToolBar), new FrameworkPropertyMetadata(KeyboardNavigationMode.Cycle));
KeyboardNavigation.TabNavigationProperty.OverrideMetadata(typeof(ToolBar), new FrameworkPropertyMetadata(KeyboardNavigationMode.Cycle));
KeyboardNavigation.ControlTabNavigationProperty.OverrideMetadata(typeof(ToolBar), new FrameworkPropertyMetadata(KeyboardNavigationMode.Once));
FocusManager.IsFocusScopeProperty.OverrideMetadata(typeof(ToolBar), new FrameworkPropertyMetadata(BooleanBoxes.TrueBox));
EventManager.RegisterClassHandler(typeof(ToolBar), Mouse.MouseDownEvent, new MouseButtonEventHandler(OnMouseButtonDown), true);
EventManager.RegisterClassHandler(typeof(ToolBar), ButtonBase.ClickEvent, new RoutedEventHandler(_OnClick));
}
///
/// Default ToolBar constructor
///
///
/// Automatic determination of current Dispatcher. Use alternative constructor
/// that accepts a Dispatcher for best performance.
///
public ToolBar() : base()
{
}
#endregion
#region Properties
#region Orientation
///
/// Property key for OrientationProperty.
///
private static readonly DependencyPropertyKey OrientationPropertyKey =
DependencyProperty.RegisterAttachedReadOnly(
"Orientation",
typeof(Orientation),
typeof(ToolBar),
new FrameworkPropertyMetadata(
Orientation.Horizontal,
null,
new CoerceValueCallback(CoerceOrientation)));
///
/// Specifies the orientation (horizontal or vertical) of the flow
///
public static readonly DependencyProperty OrientationProperty =
OrientationPropertyKey.DependencyProperty;
private static object CoerceOrientation(DependencyObject d, object value)
{
ToolBarTray toolBarTray = ((ToolBar) d).ToolBarTray;
return (toolBarTray != null) ? toolBarTray.Orientation : value;
}
///
/// Specifies the orientation of the ToolBar. This read-only property get its value from the ToolBarTray parent
///
public Orientation Orientation
{
get
{
return (Orientation) GetValue(OrientationProperty);
}
}
#endregion Orientation
#region Band
///
/// Specify the band number where ToolBar should be located withing the ToolBarTray
///
public static readonly DependencyProperty BandProperty =
DependencyProperty.Register(
"Band",
typeof(int),
typeof(ToolBar),
new FrameworkPropertyMetadata(
0,
FrameworkPropertyMetadataOptions.AffectsParentMeasure));
///
/// Specify the band number where ToolBar should be located withing the ToolBarTray
///
///
/// Specify the band index number where ToolBar should be located within the band of ToolBarTray
///
public static readonly DependencyProperty BandIndexProperty =
DependencyProperty.Register(
"BandIndex",
typeof(int),
typeof(ToolBar),
new FrameworkPropertyMetadata(
0,
FrameworkPropertyMetadataOptions.AffectsParentMeasure));
///
/// Specify the band index number where ToolBar should be located withing the band of ToolBarTray
///
///
/// DependencyProperty for IsOverflowOpen
///
public static readonly DependencyProperty IsOverflowOpenProperty =
DependencyProperty.Register(
"IsOverflowOpen",
typeof(bool),
typeof(ToolBar),
new FrameworkPropertyMetadata(
BooleanBoxes.FalseBox,
FrameworkPropertyMetadataOptions.BindsTwoWayByDefault,
new PropertyChangedCallback(OnOverflowOpenChanged),
new CoerceValueCallback(CoerceIsOverflowOpen)));
///
/// Whether or not the "popup" for this control is currently open
///
[Bindable(true), Browsable(false), Category("Appearance")]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public bool IsOverflowOpen
{
get { return (bool) GetValue(IsOverflowOpenProperty); }
set { SetValue(IsOverflowOpenProperty, BooleanBoxes.Box(value)); }
}
private static object CoerceIsOverflowOpen(DependencyObject d, object value)
{
if ((bool)value)
{
ToolBar tb = (ToolBar)d;
if (!tb.IsLoaded)
{
tb.RegisterToOpenOnLoad();
return BooleanBoxes.FalseBox;
}
}
return value;
}
private static object CoerceToolTipIsEnabled(DependencyObject d, object value)
{
ToolBar tb = (ToolBar) d;
return tb.IsOverflowOpen ? BooleanBoxes.FalseBox : value;
}
private void RegisterToOpenOnLoad()
{
Loaded += new RoutedEventHandler(OpenOnLoad);
}
private void OpenOnLoad(object sender, RoutedEventArgs e)
{
// Open overflow after toolbar has rendered (Loaded is fired before 1st render)
Dispatcher.BeginInvoke(DispatcherPriority.Input, new DispatcherOperationCallback(delegate(object param)
{
CoerceValue(IsOverflowOpenProperty);
return null;
}), null);
}
private static void OnOverflowOpenChanged(DependencyObject element, DependencyPropertyChangedEventArgs e)
{
ToolBar toolBar = (ToolBar) element;
if ((bool) e.NewValue)
{
// When the drop down opens, take capture
Mouse.Capture(toolBar, CaptureMode.SubTree);
toolBar.SetFocusOnToolBarOverflowPanel();
}
else
{
// If focus is still within the ToolBarOverflowPanel, make sure we the focus is restored to the main focus scope
ToolBarOverflowPanel overflow = toolBar.ToolBarOverflowPanel;
if (overflow != null && overflow.IsKeyboardFocusWithin)
{
Keyboard.Focus(null);
}
if (Mouse.Captured == toolBar)
{
Mouse.Capture(null);
}
}
toolBar.CoerceValue(ToolTipService.IsEnabledProperty);
}
private void SetFocusOnToolBarOverflowPanel()
{
Dispatcher.BeginInvoke(DispatcherPriority.Input, new DispatcherOperationCallback(delegate(object param)
{
if (ToolBarOverflowPanel != null)
{
// If the overflow is opened by keyboard - focus the first item
// otherwise - set focus on the panel itself
if (KeyboardNavigation.IsKeyboardMostRecentInputDevice())
{
ToolBarOverflowPanel.MoveFocus(new TraversalRequest(FocusNavigationDirection.Next));
}
else
{
ToolBarOverflowPanel.Focus();
}
}
return null;
}), null);
}
#endregion IsOverflowOpen
#region HasOverflowItems
///
/// The key needed set a read-only property.
///
internal static readonly DependencyPropertyKey HasOverflowItemsPropertyKey =
DependencyProperty.RegisterReadOnly(
"HasOverflowItems",
typeof(bool),
typeof(ToolBar),
new FrameworkPropertyMetadata(BooleanBoxes.FalseBox));
///
/// The DependencyProperty for the HasOverflowItems property.
/// Flags: None
/// Default Value: false
///
public static readonly DependencyProperty HasOverflowItemsProperty =
HasOverflowItemsPropertyKey.DependencyProperty;
///
/// Whether we have overflow items
///
public bool HasOverflowItems
{
get { return (bool) GetValue(HasOverflowItemsProperty); }
}
#endregion HasOverflowItems
#region IsOverflowItem
///
/// The key needed set a read-only property.
/// Attached property to indicate if the item is placed in the overflow panel
///
internal static readonly DependencyPropertyKey IsOverflowItemPropertyKey =
DependencyProperty.RegisterAttachedReadOnly(
"IsOverflowItem",
typeof(bool),
typeof(ToolBar),
new FrameworkPropertyMetadata(BooleanBoxes.FalseBox));
///
/// The DependencyProperty for the IsOverflowItem property.
/// Flags: None
/// Default Value: false
///
public static readonly DependencyProperty IsOverflowItemProperty =
IsOverflowItemPropertyKey.DependencyProperty;
///
/// Writes the attached property IsOverflowItem to the given element.
///
/// The element to which to write the attached property.
/// The property value to set
internal static void SetIsOverflowItem(DependencyObject element, object value)
{
element.SetValue(IsOverflowItemPropertyKey, value);
}
///
/// Reads the attached property IsOverflowItem from the given element.
///
/// The element from which to read the attached property.
/// The property's value.
public static bool GetIsOverflowItem(DependencyObject element)
{
if (element == null)
{
throw new ArgumentNullException("element");
}
return (bool)element.GetValue(IsOverflowItemProperty);
}
#endregion
#region OverflowMode
///
/// Attached property to indicate if the item should be placed in the overflow panel
///
public static readonly DependencyProperty OverflowModeProperty =
DependencyProperty.RegisterAttached(
"OverflowMode",
typeof(OverflowMode),
typeof(ToolBar),
new FrameworkPropertyMetadata(
OverflowMode.AsNeeded,
new PropertyChangedCallback(OnOverflowModeChanged)),
new ValidateValueCallback(IsValidOverflowMode));
private static void OnOverflowModeChanged(DependencyObject element, DependencyPropertyChangedEventArgs e)
{
// We need to invalidate the logical parent which is ToolBar
// because visual parent could be ToolBarPanel or ToolBarOverflowPanel
// Invalidating ToolBar cause to invalidate both panels
ToolBar toolBar = ItemsControl.ItemsControlFromItemContainer(element) as ToolBar;
if (toolBar != null)
{
// Reset the calculated min and max size
toolBar._minLength = toolBar._maxLength = 0d;
toolBar.InvalidateMeasure();
}
}
private static bool IsValidOverflowMode(object o)
{
OverflowMode value = (OverflowMode)o;
return value == OverflowMode.AsNeeded
|| value == OverflowMode.Always
|| value == OverflowMode.Never;
}
///
/// Writes the attached property OverflowMode to the given element.
///
/// The element to which to write the attached property.
/// The property value to set
public static void SetOverflowMode(DependencyObject element, OverflowMode mode)
{
if (element == null)
{
throw new ArgumentNullException("element");
}
element.SetValue(OverflowModeProperty, mode);
}
///
/// Reads the attached property OverflowMode from the given element.
///
/// The element from which to read the attached property.
/// The property's value.
[AttachedPropertyBrowsableForChildren(IncludeDescendants = true)]
public static OverflowMode GetOverflowMode(DependencyObject element)
{
if (element == null)
{
throw new ArgumentNullException("element");
}
return (OverflowMode)element.GetValue(OverflowModeProperty);
}
#endregion
#endregion Properties
#region Override methods
///
/// Creates AutomationPeer (
protected override AutomationPeer OnCreateAutomationPeer()
{
return new ToolBarAutomationPeer(this);
}
///
/// Prepare the element to display the item. This may involve
/// applying styles, setting bindings, etc.
///
protected override void PrepareContainerForItemOverride(DependencyObject element, object item)
{
base.PrepareContainerForItemOverride(element, item);
FrameworkElement fe = element as FrameworkElement;
if (fe != null)
{
bool hasModifiers;
BaseValueSourceInternal vs = fe.GetValueSource(StyleProperty, null, out hasModifiers);
Type feType = fe.GetType();
ResourceKey resourceKey = null;
if (feType == typeof(Button))
resourceKey = ButtonStyleKey;
else if (feType == typeof(ToggleButton))
resourceKey = ToggleButtonStyleKey;
else if (feType == typeof(Separator))
resourceKey = SeparatorStyleKey;
else if (feType == typeof(CheckBox))
resourceKey = CheckBoxStyleKey;
else if (feType == typeof(RadioButton))
resourceKey = RadioButtonStyleKey;
else if (feType == typeof(ComboBox))
resourceKey = ComboBoxStyleKey;
else if (feType == typeof(TextBox))
resourceKey = TextBoxStyleKey;
else if (feType == typeof(Menu))
resourceKey = MenuStyleKey;
if (resourceKey != null)
{
if (vs <= BaseValueSourceInternal.ImplicitReference)
fe.SetResourceReference(StyleProperty, resourceKey);
fe.DefaultStyleKey = resourceKey;
}
}
}
internal override void OnTemplateChangedInternal(FrameworkTemplate oldTemplate, FrameworkTemplate newTemplate)
{
// Invalidate template references
_toolBarPanel = null;
_toolBarOverflowPanel = null;
base.OnTemplateChangedInternal(oldTemplate, newTemplate);
}
///
/// This method is invoked when the Items property changes.
///
protected override void OnItemsChanged(NotifyCollectionChangedEventArgs e)
{
// Reset the calculated min and max size
_minLength = _maxLength = 0d;
base.OnItemsChanged(e);
}
///
/// Measure the content and store the desired size of the content
///
///
///
/// Called when this element loses mouse capture.
///
///
protected override void OnLostMouseCapture(MouseEventArgs e)
{
base.OnLostMouseCapture(e);
// ToolBar has a capture when its overflow panel is open
// close the overflow panel is case capture is set to null
if (Mouse.Captured == null)
{
Close();
}
}
#endregion Override methods
#region Private implementation
///
/// Gets reference to ToolBar's ToolBarPanel element.
///
internal ToolBarPanel ToolBarPanel
{
get
{
if (_toolBarPanel == null)
_toolBarPanel = FindToolBarPanel();
return _toolBarPanel;
}
}
private ToolBarPanel FindToolBarPanel()
{
DependencyObject child = GetTemplateChild(ToolBarPanelTemplateName);
ToolBarPanel toolBarPanel = child as ToolBarPanel;
if (child != null && toolBarPanel == null)
throw new NotSupportedException(SR.Get(SRID.ToolBar_InvalidStyle_ToolBarPanel, child.GetType()));
return toolBarPanel;
}
///
/// Gets reference to ToolBar's ToolBarOverflowPanel element.
///
internal ToolBarOverflowPanel ToolBarOverflowPanel
{
get
{
if (_toolBarOverflowPanel == null)
_toolBarOverflowPanel = FindToolBarOverflowPanel();
return _toolBarOverflowPanel;
}
}
private ToolBarOverflowPanel FindToolBarOverflowPanel()
{
DependencyObject child = GetTemplateChild(ToolBarOverflowPanelTemplateName);
ToolBarOverflowPanel toolBarOverflowPanel = child as ToolBarOverflowPanel;
if (child != null && toolBarOverflowPanel == null)
throw new NotSupportedException(SR.Get(SRID.ToolBar_InvalidStyle_ToolBarOverflowPanel, child.GetType()));
return toolBarOverflowPanel;
}
///
/// This is the method that responds to the KeyDown event.
///
///
protected override void OnKeyDown(KeyEventArgs e)
{
UIElement newFocusElement = null;
UIElement currentFocusElement = e.Source as UIElement;
if (currentFocusElement != null && ItemsControl.ItemsControlFromItemContainer(currentFocusElement) == this)
{
// itemsHost should be either ToolBarPanel or ToolBarOverflowPanel
Panel itemsHost = VisualTreeHelper.GetParent(currentFocusElement) as Panel;
if (itemsHost != null)
{
switch (e.Key)
{
// itemsHost.Children.Count is greater than zero because itemsHost is visual parent of currentFocusElement
case Key.Home:
newFocusElement = VisualTreeHelper.GetChild(itemsHost, 0) as UIElement;
break;
case Key.End:
newFocusElement = VisualTreeHelper.GetChild(itemsHost, VisualTreeHelper.GetChildrenCount(itemsHost)-1) as UIElement;
break;
case Key.Escape:
{
// If focus is within ToolBarOverflowPanel - move focus the the toggle button
ToolBarOverflowPanel overflow = ToolBarOverflowPanel;
if (overflow != null && overflow.IsKeyboardFocusWithin)
{
MoveFocus(new TraversalRequest(FocusNavigationDirection.Last));
}
else
{
Keyboard.Focus(null);
}
// Close the overflow the Esc is pressed
Close();
}
break;
}
if (newFocusElement != null)
{
if (newFocusElement.Focus())
e.Handled = true;
}
}
}
if (!e.Handled)
base.OnKeyDown(e);
}
private static void OnMouseButtonDown(object sender, MouseButtonEventArgs e)
{
ToolBar toolBar = (ToolBar)sender;
// Close the overflow for all unhandled mousedown in ToolBar
if (!e.Handled)
{
toolBar.Close();
e.Handled = true;
}
}
// ButtonBase.Click class handler
// When we get a click event from toolbar item - close the overflow panel
private static void _OnClick(object e, RoutedEventArgs args)
{
ToolBar toolBar = (ToolBar)e;
ButtonBase bb = args.OriginalSource as ButtonBase;
if (toolBar.IsOverflowOpen && bb != null && bb.Parent == toolBar)
toolBar.Close();
}
internal override void OnAncestorChanged()
{
// Orientation depends on the logical parent -- so invalidate it when that changes
CoerceValue(OrientationProperty);
}
private void Close()
{
if (IsOverflowOpen)
{
ClearValue(IsOverflowOpenProperty);
// Force Close in case of triggers
if (IsOverflowOpen)
IsOverflowOpen = false;
}
}
private ToolBarTray ToolBarTray
{
get
{
return Parent as ToolBarTray;
}
}
internal double MinLength
{
get { return _minLength; }
}
internal double MaxLength
{
get { return _maxLength; }
}
internal bool IsValidMinLength
{
get { return _minLength != 0d; }
}
internal bool IsValidMaxLength
{
get { return _maxLength != 0d; }
}
#endregion Private implementation
#region private data
private ToolBarPanel _toolBarPanel;
private ToolBarOverflowPanel _toolBarOverflowPanel;
private const string ToolBarPanelTemplateName = "PART_ToolBarPanel";
private const string ToolBarOverflowPanelTemplateName = "PART_ToolBarOverflowPanel";
private double _minLength = 0d;
private double _maxLength = 0d;
#endregion private data
#region DTypeThemeStyleKey
// Returns the DependencyObjectType for the registered ThemeStyleKey's default
// value. Controls will override this method to return approriate types.
internal override DependencyObjectType DTypeThemeStyleKey
{
get { return _dType; }
}
private static DependencyObjectType _dType;
#endregion DTypeThemeStyleKey
#region ItemsStyleKey
///
/// Resource Key for the ButtonStyle
///
public static ResourceKey ButtonStyleKey
{
get
{
if (_cacheButtonStyle == null)
{
_cacheButtonStyle = new SystemThemeKey(SystemResourceKeyID.ToolBarButtonStyle);
}
return _cacheButtonStyle;
}
}
private static SystemThemeKey _cacheButtonStyle;
///
/// Resource Key for the ToggleButtonStyle
///
public static ResourceKey ToggleButtonStyleKey
{
get
{
if (_cacheToggleButtonStyle == null)
{
_cacheToggleButtonStyle = new SystemThemeKey(SystemResourceKeyID.ToolBarToggleButtonStyle);
}
return _cacheToggleButtonStyle;
}
}
private static SystemThemeKey _cacheToggleButtonStyle;
///
/// Resource Key for the SeparatorStyle
///
public static ResourceKey SeparatorStyleKey
{
get
{
if (_cacheSeparatorStyle == null)
{
_cacheSeparatorStyle = new SystemThemeKey(SystemResourceKeyID.ToolBarSeparatorStyle);
}
return _cacheSeparatorStyle;
}
}
private static SystemThemeKey _cacheSeparatorStyle;
///
/// Resource Key for the CheckBoxStyle
///
public static ResourceKey CheckBoxStyleKey
{
get
{
if (_cacheCheckBoxStyle == null)
{
_cacheCheckBoxStyle = new SystemThemeKey(SystemResourceKeyID.ToolBarCheckBoxStyle);
}
return _cacheCheckBoxStyle;
}
}
private static SystemThemeKey _cacheCheckBoxStyle;
///
/// Resource Key for the RadioButtonStyle
///
public static ResourceKey RadioButtonStyleKey
{
get
{
if (_cacheRadioButtonStyle == null)
{
_cacheRadioButtonStyle = new SystemThemeKey(SystemResourceKeyID.ToolBarRadioButtonStyle);
}
return _cacheRadioButtonStyle;
}
}
private static SystemThemeKey _cacheRadioButtonStyle;
///
/// Resource Key for the ComboBoxStyle
///
public static ResourceKey ComboBoxStyleKey
{
get
{
if (_cacheComboBoxStyle == null)
{
_cacheComboBoxStyle = new SystemThemeKey(SystemResourceKeyID.ToolBarComboBoxStyle);
}
return _cacheComboBoxStyle;
}
}
private static SystemThemeKey _cacheComboBoxStyle;
///
/// Resource Key for the TextBoxStyle
///
public static ResourceKey TextBoxStyleKey
{
get
{
if (_cacheTextBoxStyle == null)
{
_cacheTextBoxStyle = new SystemThemeKey(SystemResourceKeyID.ToolBarTextBoxStyle);
}
return _cacheTextBoxStyle;
}
}
private static SystemThemeKey _cacheTextBoxStyle;
///
/// Resource Key for the MenuStyle
///
public static ResourceKey MenuStyleKey
{
get
{
if (_cacheMenuStyle == null)
{
_cacheMenuStyle = new SystemThemeKey(SystemResourceKeyID.ToolBarMenuStyle);
}
return _cacheMenuStyle;
}
}
private static SystemThemeKey _cacheMenuStyle;
#endregion ItemsStyleKey
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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- EditorReuseAttribute.cs
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- RegexCompilationInfo.cs
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- ScrollProviderWrapper.cs
- coordinatorscratchpad.cs
- ToggleButton.cs
- CleanUpVirtualizedItemEventArgs.cs
- Currency.cs
- SchemaReference.cs
- MenuCommandService.cs
- MenuEventArgs.cs
- PrintEvent.cs
- DirectoryInfo.cs
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