//
// System.Windows.Automation.Peers.ScrollBarAutomationPeer
//
// Contact:
// Moonlight List (moonlight-list@lists.ximian.com)
//
// Copyright (C) 2009 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Collections.Generic;
using System.Windows.Automation.Peers;
using System.Windows.Automation.Provider;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
namespace System.Windows.Automation.Peers{
public class ScrollBarAutomationPeer : RangeBaseAutomationPeer {
public ScrollBarAutomationPeer (ScrollBar owner)
: base (owner)
{
owner.LayoutUpdated += (o, e) => {
children = null;
// This usually happends when orientation changes.
RaiseAutomationEvent (AutomationEvents.StructureChanged);
};
}
protected override AutomationControlType GetAutomationControlTypeCore ()
{
return AutomationControlType.ScrollBar;
}
protected override string GetClassNameCore ()
{
return "ScrollBar";
}
protected override Point GetClickablePointCore ()
{
return new Point (double.NaN, double.NaN);
}
protected override AutomationOrientation GetOrientationCore ()
{
ScrollBar scrollbar = (ScrollBar) Owner;
if (scrollbar.Orientation == Orientation.Vertical)
return AutomationOrientation.Vertical;
else
return AutomationOrientation.Horizontal;
}
// Method used by ScrollViewerAutomationPeer to IScrollProvider.Scroll
internal void InvokeByAmount (ScrollAmount amount)
{
CacheChildren ();
if (children == null || amount == ScrollAmount.NoAmount)
return;
// 0 = First button - Small decrement
// 1 = Second button - Large decrement
// 2 = Thumb
// 3 = Third button - Large increment
// 4 = Fourth button - Small increment
int index = -1;
switch (amount) {
case ScrollAmount.LargeIncrement:
index = 3;
break;
case ScrollAmount.SmallIncrement:
index = 4;
break;
case ScrollAmount.LargeDecrement:
index = 1;
break;
case ScrollAmount.SmallDecrement:
index = 0;
break;
}
IInvokeProvider invokeProvider
= (IInvokeProvider) children [index].GetPattern (PatternInterface.Invoke);
if (invokeProvider != null)
invokeProvider.Invoke ();
}
internal override List<AutomationPeer> ChildrenCore {
get {
CacheChildren ();
return children;
}
}
private void CacheChildren ()
{
if (children == null || children.Count == 0) {
// base.ChildrenCore returns 10 children:
// - Child0-Child4 are used when orientation is Vertical
// - Child5-Child9 are used when orientation is Horizontal
children = new List<AutomationPeer> ();
List<AutomationPeer> baseChildren = base.ChildrenCore;
if (baseChildren == null)
return;
ScrollBar scrollbar = (ScrollBar) Owner;
int begin = 0;
if (scrollbar.Orientation == Orientation.Vertical)
begin = 5;
for (int index = begin; index < begin + 5; index++)
children.Add (baseChildren [index]);
}
}
private List<AutomationPeer> children;
}
}
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