Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / Orcas / QFE / wpf / src / Framework / System / Windows / Controls / Primitives / RangeBase.cs / 1 / RangeBase.cs
//----------------------------------------------------------------------------
//
// Copyright (C) Microsoft Corporation. All rights reserved.
//
//---------------------------------------------------------------------------
using System;
using System.Collections;
using System.ComponentModel;
using System.Globalization;
using System.Windows.Threading;
using System.Windows.Automation.Peers;
using System.Windows.Automation.Provider;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
using System.Windows;
using System.Windows.Input;
using System.Windows.Media;
using MS.Internal;
using MS.Utility;
namespace System.Windows.Controls.Primitives
{
///
/// The RangeBase class is the base class from which all "range-like"
/// controls derive. It defines the relevant events and properties, as
/// well as providing handlers for the relevant input events.
///
///
/// Default RangeBase constructor
///
///
/// Automatic determination of current Dispatcher. Use alternative constructor
/// that accepts a Dispatcher for best performance.
///
protected RangeBase()
{
}
#endregion Constructors
#region Events
///
/// Event correspond to Value changed event
///
public static readonly RoutedEvent ValueChangedEvent = EventManager.RegisterRoutedEvent("ValueChanged", RoutingStrategy.Bubble, typeof(RoutedPropertyChangedEventHandler), typeof(RangeBase));
///
/// Add / Remove ValueChangedEvent handler
///
[Category("Behavior")]
public event RoutedPropertyChangedEventHandler ValueChanged { add { AddHandler(ValueChangedEvent, value); } remove { RemoveHandler(ValueChangedEvent, value); } }
#endregion Events
#region Properties
///
/// The DependencyProperty for the Minimum property.
/// Flags: none
/// Default Value: 0
///
public static readonly DependencyProperty MinimumProperty =
DependencyProperty.Register(
"Minimum",
typeof(double),
typeof(RangeBase),
new FrameworkPropertyMetadata(
0.0d,
new PropertyChangedCallback(OnMinimumChanged)),
new ValidateValueCallback(IsValidDoubleValue));
///
/// Minimum restricts the minimum value of the Value property
///
[Bindable(true), Category("Behavior")]
public double Minimum
{
get { return (double) GetValue(MinimumProperty); }
set { SetValue(MinimumProperty, value); }
}
///
/// Called when MinimumProperty is changed on "d."
///
private static void OnMinimumChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
RangeBase ctrl = (RangeBase) d;
RangeBaseAutomationPeer peer = UIElementAutomationPeer.FromElement(ctrl) as RangeBaseAutomationPeer;
if (peer != null)
{
peer.RaiseMinimumPropertyChangedEvent((double)e.OldValue, (double)e.NewValue);
}
ctrl.CoerceValue(MaximumProperty);
ctrl.CoerceValue(ValueProperty);
ctrl.OnMinimumChanged((double)e.OldValue, (double)e.NewValue);
}
///
/// This method is invoked when the Minimum property changes.
///
/// The old value of the Minimum property.
/// The new value of the Minimum property.
protected virtual void OnMinimumChanged(double oldMinimum, double newMinimum)
{
}
///
/// The DependencyProperty for the Maximum property.
/// Flags: none
/// Default Value: 1
///
public static readonly DependencyProperty MaximumProperty =
DependencyProperty.Register(
"Maximum",
typeof(double),
typeof(RangeBase),
new FrameworkPropertyMetadata(
1.0d,
new PropertyChangedCallback(OnMaximumChanged),
new CoerceValueCallback(CoerceMaximum)),
new ValidateValueCallback(IsValidDoubleValue));
private static object CoerceMaximum(DependencyObject d, object value)
{
RangeBase ctrl = (RangeBase) d;
double min = ctrl.Minimum;
if ((double) value < min)
{
return min;
}
return value;
}
///
/// Maximum restricts the maximum value of the Value property
///
[Bindable(true), Category("Behavior")]
public double Maximum
{
get { return (double) GetValue(MaximumProperty); }
set { SetValue(MaximumProperty, value); }
}
///
/// Called when MaximumProperty is changed on "d."
///
private static void OnMaximumChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
RangeBase ctrl = (RangeBase) d;
RangeBaseAutomationPeer peer = UIElementAutomationPeer.FromElement(ctrl) as RangeBaseAutomationPeer;
if (peer != null)
{
peer.RaiseMaximumPropertyChangedEvent((double)e.OldValue, (double)e.NewValue);
}
ctrl.CoerceValue(ValueProperty);
ctrl.OnMaximumChanged((double) e.OldValue, (double) e.NewValue);
}
///
/// This method is invoked when the Maximum property changes.
///
/// The old value of the Maximum property.
/// The new value of the Maximum property.
protected virtual void OnMaximumChanged(double oldMaximum, double newMaximum)
{
}
///
/// The DependencyProperty for the Value property.
/// Flags: None
/// Default Value: 0
///
public static readonly DependencyProperty ValueProperty =
DependencyProperty.Register(
"Value",
typeof(double),
typeof(RangeBase),
new FrameworkPropertyMetadata(
0.0d,
FrameworkPropertyMetadataOptions.BindsTwoWayByDefault | FrameworkPropertyMetadataOptions.Journal,
new PropertyChangedCallback(OnValueChanged),
new CoerceValueCallback(ConstrainToRange)),
new ValidateValueCallback(IsValidDoubleValue));
// made this internal because Slider wants to leverage it
internal static object ConstrainToRange(DependencyObject d, object value)
{
RangeBase ctrl = (RangeBase) d;
double min = ctrl.Minimum;
double v = (double) value;
if (v < min)
{
return min;
}
double max = ctrl.Maximum;
if (v > max)
{
return max;
}
return value;
}
///
/// Value property
///
[Bindable(true), Category("Behavior")]
public double Value
{
get { return (double) GetValue(ValueProperty); }
set { SetValue(ValueProperty, value); }
}
///
/// Called when ValueID is changed on "d."
///
private static void OnValueChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
RangeBase ctrl = (RangeBase)d;
RangeBaseAutomationPeer peer = UIElementAutomationPeer.FromElement(ctrl) as RangeBaseAutomationPeer;
if (peer != null)
{
peer.RaiseValuePropertyChangedEvent((double)e.OldValue, (double)e.NewValue);
}
ctrl.OnValueChanged((double) e.OldValue, (double) e.NewValue);
}
///
/// This method is invoked when the Value property changes.
///
/// The old value of the Value property.
/// The new value of the Value property.
protected virtual void OnValueChanged(double oldValue, double newValue)
{
RoutedPropertyChangedEventArgs args = new RoutedPropertyChangedEventArgs(oldValue, newValue);
args.RoutedEvent=RangeBase.ValueChangedEvent;
RaiseEvent(args);
}
///
/// Validate input value in RangeBase (Minimum, Maximum, and Value).
///
///
/// Returns False if value is NaN or NegativeInfinity or PositiveInfinity. Otherwise, returns True.
private static bool IsValidDoubleValue(object value)
{
double d = (double)value;
return !(DoubleUtil.IsNaN(d) || double.IsInfinity(d));
}
///
/// Validate input value in RangeBase (SmallChange and LargeChange).
///
///
/// Returns False if value is NaN or NegativeInfinity or PositiveInfinity or negative. Otherwise, returns True.
private static bool IsValidChange(object value)
{
double d = (double)value;
return IsValidDoubleValue(value) && d >= 0.0;
}
#region LargeChange Property
///
/// The DependencyProperty for the LargeChange property.
///
public static readonly DependencyProperty LargeChangeProperty
= DependencyProperty.Register("LargeChange", typeof(double), typeof(RangeBase),
new FrameworkPropertyMetadata(1.0),
new ValidateValueCallback(IsValidChange));
///
/// LargeChange property
///
[Bindable(true), Category("Behavior")]
public double LargeChange
{
get
{
return (double)GetValue(LargeChangeProperty);
}
set
{
SetValue(LargeChangeProperty, value);
}
}
#endregion
#region SmallChange Property
///
/// The DependencyProperty for the SmallChange property.
///
public static readonly DependencyProperty SmallChangeProperty
= DependencyProperty.Register("SmallChange", typeof(double), typeof(RangeBase),
new FrameworkPropertyMetadata(0.1),
new ValidateValueCallback(IsValidChange));
///
/// SmallChange property
///
[Bindable(true), Category("Behavior")]
public double SmallChange
{
get
{
return (double)GetValue(SmallChangeProperty);
}
set
{
SetValue(SmallChangeProperty, value);
}
}
#endregion
#endregion
#region Method Overrides
///
/// Gives a string representation of this object.
///
public override string ToString()
{
string typeText = this.GetType().ToString();
double min = double.NaN;
double max = double.NaN;
double val = double.NaN;
bool valuesDefined = false;
// Accessing RangeBase properties may be thread sensitive
if (CheckAccess())
{
min = Minimum;
max = Maximum;
val = Value;
valuesDefined = true;
}
else
{
//Not on dispatcher, try posting to the dispatcher with 20ms timeout
Dispatcher.Invoke(DispatcherPriority.Send, new TimeSpan(0, 0, 0, 0, 20), new DispatcherOperationCallback(delegate(object o)
{
min = Minimum;
max = Maximum;
val = Value;
valuesDefined = true;
return null;
}), null);
}
// If min, max, value are defined
if (valuesDefined)
{
return SR.Get(SRID.ToStringFormatString_RangeBase, typeText, min, max, val);
}
// Not able to access the dispatcher
return typeText;
}
#endregion
}
}
// 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;
using System.ComponentModel;
using System.Globalization;
using System.Windows.Threading;
using System.Windows.Automation.Peers;
using System.Windows.Automation.Provider;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
using System.Windows;
using System.Windows.Input;
using System.Windows.Media;
using MS.Internal;
using MS.Utility;
namespace System.Windows.Controls.Primitives
{
///
/// The RangeBase class is the base class from which all "range-like"
/// controls derive. It defines the relevant events and properties, as
/// well as providing handlers for the relevant input events.
///
///
/// Default RangeBase constructor
///
///
/// Automatic determination of current Dispatcher. Use alternative constructor
/// that accepts a Dispatcher for best performance.
///
protected RangeBase()
{
}
#endregion Constructors
#region Events
///
/// Event correspond to Value changed event
///
public static readonly RoutedEvent ValueChangedEvent = EventManager.RegisterRoutedEvent("ValueChanged", RoutingStrategy.Bubble, typeof(RoutedPropertyChangedEventHandler), typeof(RangeBase));
///
/// Add / Remove ValueChangedEvent handler
///
[Category("Behavior")]
public event RoutedPropertyChangedEventHandler ValueChanged { add { AddHandler(ValueChangedEvent, value); } remove { RemoveHandler(ValueChangedEvent, value); } }
#endregion Events
#region Properties
///
/// The DependencyProperty for the Minimum property.
/// Flags: none
/// Default Value: 0
///
public static readonly DependencyProperty MinimumProperty =
DependencyProperty.Register(
"Minimum",
typeof(double),
typeof(RangeBase),
new FrameworkPropertyMetadata(
0.0d,
new PropertyChangedCallback(OnMinimumChanged)),
new ValidateValueCallback(IsValidDoubleValue));
///
/// Minimum restricts the minimum value of the Value property
///
[Bindable(true), Category("Behavior")]
public double Minimum
{
get { return (double) GetValue(MinimumProperty); }
set { SetValue(MinimumProperty, value); }
}
///
/// Called when MinimumProperty is changed on "d."
///
private static void OnMinimumChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
RangeBase ctrl = (RangeBase) d;
RangeBaseAutomationPeer peer = UIElementAutomationPeer.FromElement(ctrl) as RangeBaseAutomationPeer;
if (peer != null)
{
peer.RaiseMinimumPropertyChangedEvent((double)e.OldValue, (double)e.NewValue);
}
ctrl.CoerceValue(MaximumProperty);
ctrl.CoerceValue(ValueProperty);
ctrl.OnMinimumChanged((double)e.OldValue, (double)e.NewValue);
}
///
/// This method is invoked when the Minimum property changes.
///
/// The old value of the Minimum property.
/// The new value of the Minimum property.
protected virtual void OnMinimumChanged(double oldMinimum, double newMinimum)
{
}
///
/// The DependencyProperty for the Maximum property.
/// Flags: none
/// Default Value: 1
///
public static readonly DependencyProperty MaximumProperty =
DependencyProperty.Register(
"Maximum",
typeof(double),
typeof(RangeBase),
new FrameworkPropertyMetadata(
1.0d,
new PropertyChangedCallback(OnMaximumChanged),
new CoerceValueCallback(CoerceMaximum)),
new ValidateValueCallback(IsValidDoubleValue));
private static object CoerceMaximum(DependencyObject d, object value)
{
RangeBase ctrl = (RangeBase) d;
double min = ctrl.Minimum;
if ((double) value < min)
{
return min;
}
return value;
}
///
/// Maximum restricts the maximum value of the Value property
///
[Bindable(true), Category("Behavior")]
public double Maximum
{
get { return (double) GetValue(MaximumProperty); }
set { SetValue(MaximumProperty, value); }
}
///
/// Called when MaximumProperty is changed on "d."
///
private static void OnMaximumChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
RangeBase ctrl = (RangeBase) d;
RangeBaseAutomationPeer peer = UIElementAutomationPeer.FromElement(ctrl) as RangeBaseAutomationPeer;
if (peer != null)
{
peer.RaiseMaximumPropertyChangedEvent((double)e.OldValue, (double)e.NewValue);
}
ctrl.CoerceValue(ValueProperty);
ctrl.OnMaximumChanged((double) e.OldValue, (double) e.NewValue);
}
///
/// This method is invoked when the Maximum property changes.
///
/// The old value of the Maximum property.
/// The new value of the Maximum property.
protected virtual void OnMaximumChanged(double oldMaximum, double newMaximum)
{
}
///
/// The DependencyProperty for the Value property.
/// Flags: None
/// Default Value: 0
///
public static readonly DependencyProperty ValueProperty =
DependencyProperty.Register(
"Value",
typeof(double),
typeof(RangeBase),
new FrameworkPropertyMetadata(
0.0d,
FrameworkPropertyMetadataOptions.BindsTwoWayByDefault | FrameworkPropertyMetadataOptions.Journal,
new PropertyChangedCallback(OnValueChanged),
new CoerceValueCallback(ConstrainToRange)),
new ValidateValueCallback(IsValidDoubleValue));
// made this internal because Slider wants to leverage it
internal static object ConstrainToRange(DependencyObject d, object value)
{
RangeBase ctrl = (RangeBase) d;
double min = ctrl.Minimum;
double v = (double) value;
if (v < min)
{
return min;
}
double max = ctrl.Maximum;
if (v > max)
{
return max;
}
return value;
}
///
/// Value property
///
[Bindable(true), Category("Behavior")]
public double Value
{
get { return (double) GetValue(ValueProperty); }
set { SetValue(ValueProperty, value); }
}
///
/// Called when ValueID is changed on "d."
///
private static void OnValueChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
RangeBase ctrl = (RangeBase)d;
RangeBaseAutomationPeer peer = UIElementAutomationPeer.FromElement(ctrl) as RangeBaseAutomationPeer;
if (peer != null)
{
peer.RaiseValuePropertyChangedEvent((double)e.OldValue, (double)e.NewValue);
}
ctrl.OnValueChanged((double) e.OldValue, (double) e.NewValue);
}
///
/// This method is invoked when the Value property changes.
///
/// The old value of the Value property.
/// The new value of the Value property.
protected virtual void OnValueChanged(double oldValue, double newValue)
{
RoutedPropertyChangedEventArgs args = new RoutedPropertyChangedEventArgs(oldValue, newValue);
args.RoutedEvent=RangeBase.ValueChangedEvent;
RaiseEvent(args);
}
///
/// Validate input value in RangeBase (Minimum, Maximum, and Value).
///
///
/// Returns False if value is NaN or NegativeInfinity or PositiveInfinity. Otherwise, returns True.
private static bool IsValidDoubleValue(object value)
{
double d = (double)value;
return !(DoubleUtil.IsNaN(d) || double.IsInfinity(d));
}
///
/// Validate input value in RangeBase (SmallChange and LargeChange).
///
///
/// Returns False if value is NaN or NegativeInfinity or PositiveInfinity or negative. Otherwise, returns True.
private static bool IsValidChange(object value)
{
double d = (double)value;
return IsValidDoubleValue(value) && d >= 0.0;
}
#region LargeChange Property
///
/// The DependencyProperty for the LargeChange property.
///
public static readonly DependencyProperty LargeChangeProperty
= DependencyProperty.Register("LargeChange", typeof(double), typeof(RangeBase),
new FrameworkPropertyMetadata(1.0),
new ValidateValueCallback(IsValidChange));
///
/// LargeChange property
///
[Bindable(true), Category("Behavior")]
public double LargeChange
{
get
{
return (double)GetValue(LargeChangeProperty);
}
set
{
SetValue(LargeChangeProperty, value);
}
}
#endregion
#region SmallChange Property
///
/// The DependencyProperty for the SmallChange property.
///
public static readonly DependencyProperty SmallChangeProperty
= DependencyProperty.Register("SmallChange", typeof(double), typeof(RangeBase),
new FrameworkPropertyMetadata(0.1),
new ValidateValueCallback(IsValidChange));
///
/// SmallChange property
///
[Bindable(true), Category("Behavior")]
public double SmallChange
{
get
{
return (double)GetValue(SmallChangeProperty);
}
set
{
SetValue(SmallChangeProperty, value);
}
}
#endregion
#endregion
#region Method Overrides
///
/// Gives a string representation of this object.
///
public override string ToString()
{
string typeText = this.GetType().ToString();
double min = double.NaN;
double max = double.NaN;
double val = double.NaN;
bool valuesDefined = false;
// Accessing RangeBase properties may be thread sensitive
if (CheckAccess())
{
min = Minimum;
max = Maximum;
val = Value;
valuesDefined = true;
}
else
{
//Not on dispatcher, try posting to the dispatcher with 20ms timeout
Dispatcher.Invoke(DispatcherPriority.Send, new TimeSpan(0, 0, 0, 0, 20), new DispatcherOperationCallback(delegate(object o)
{
min = Minimum;
max = Maximum;
val = Value;
valuesDefined = true;
return null;
}), null);
}
// If min, max, value are defined
if (valuesDefined)
{
return SR.Get(SRID.ToStringFormatString_RangeBase, typeText, min, max, val);
}
// Not able to access the dispatcher
return typeText;
}
#endregion
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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