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//---------------------------------------------------------------------------
//
// <copyright file="WindowsRebar.cs" company="Microsoft">
// Copyright (C) Microsoft Corporation. All rights reserved.
// </copyright>
//
//
// Description: HWND-based Rebar Proxy
//
// History:
// Jean-Francois Peyroux. Created
//
//
using System;
using System.Collections;
using System.Text;
using System.Runtime.InteropServices;
using System.ComponentModel;
using System.Windows.Automation;
using System.Windows.Automation.Provider;
using System.Windows;
using MS.Win32;
namespace MS.Internal.AutomationProxies
{
class WindowsRebar: ProxyHwnd, IRawElementProviderHwndOverride
{
// ------------------------------------------------------
//
// Constructors
//
// ------------------------------------------------------
#region Constructors
WindowsRebar (IntPtr hwnd, ProxyFragment parent, int item)
: base( hwnd, parent, item )
{
_sType = ST.Get(STID.LocalizedControlTypeRebar);
_fIsContent = false;
// support for events
_createOnEvent = new WinEventTracker.ProxyRaiseEvents (RaiseEvents);
}
#endregion
#region Proxy Create
// Static Create method called by UIAutomation to create this proxy.
// returns null if unsuccessful
internal static IRawElementProviderSimple Create(IntPtr hwnd, int idChild, int idObject)
{
return Create(hwnd, idChild);
}
private static IRawElementProviderSimple Create(IntPtr hwnd, int idChild)
{
// Something is wrong if idChild is not zero
if (idChild != 0)
{
System.Diagnostics.Debug.Assert (idChild == 0, "Invalid Child Id, idChild != 0");
throw new ArgumentOutOfRangeException("idChild", idChild, SR.Get(SRID.ShouldBeZero));
}
return new WindowsRebar(hwnd, null, idChild);
}
// Static Create method called by the event tracker system
internal static void RaiseEvents (IntPtr hwnd, int eventId, object idProp, int idObject, int idChild)
{
if (idObject != NativeMethods.OBJID_VSCROLL && idObject != NativeMethods.OBJID_HSCROLL)
{
WindowsRebar wtv = new WindowsRebar (hwnd, null, -1);
wtv.DispatchEvents (eventId, idProp, idObject, idChild);
}
}
#endregion
//------------------------------------------------------
//
// Patterns Implementation
//
//------------------------------------------------------
#region ProxyFragment Interface
// Returns the next sibling element in the raw hierarchy.
// Peripheral controls have always negative values.
// Returns null if no next child
internal override ProxySimple GetNextSibling (ProxySimple child)
{
int item = child._item;
// If the index of the next node would be out of range...
if (item >= 0 && (item + 1) < Count)
{
// return a node to represent the requested item.
return CreateRebarItem (item + 1);
}
return null;
}
// Returns the previous sibling element in the raw hierarchy.
// Peripheral controls have always negative values.
// Returns null is no previous
internal override ProxySimple GetPreviousSibling (ProxySimple child)
{
// If the index of the previous node would be out of range...
int item = child._item;
if (item > 0 && item < Count)
{
return CreateRebarItem (item - 1);
}
return null;
}
// Returns the first child element in the raw hierarchy.
internal override ProxySimple GetFirstChild ()
{
return Count > 0 ? CreateRebarItem (0) : null;
}
// Returns the last child element in the raw hierarchy.
internal override ProxySimple GetLastChild ()
{
int count = Count;
return count > 0 ? CreateRebarItem (count - 1) : null;
}
// Returns a Proxy element corresponding to the specified screen coordinates.
internal override ProxySimple ElementProviderFromPoint (int x, int y)
{
int x1 = x;
int y1 = y;
NativeMethods.Win32Rect rebarRect = new NativeMethods.Win32Rect ();
if (!Misc.GetWindowRect(_hwnd, ref rebarRect))
{
return null;
}
if (x >= rebarRect.left && x <= rebarRect.right &&
y >= rebarRect.top && y <= rebarRect.bottom)
{
x = x - rebarRect.left;
y = y - rebarRect.top;
NativeMethods.Win32Point pt = new NativeMethods.Win32Point (x, y);
int BandID = getRebarBandIDFromPoint (pt);
if (-1 != BandID)
{
return CreateRebarItem (BandID).ElementProviderFromPoint (x1, y1);
}
}
return null;
}
#endregion
#region IRawElementProviderHwndOverride Interface
//------------------------------------------------------
//
// Interface IRawElementProviderHwndOverride
//
//------------------------------------------------------
IRawElementProviderSimple IRawElementProviderHwndOverride.GetOverrideProviderForHwnd (IntPtr hwnd)
{
// return the appropriate placeholder for the given hwnd...
// loop over all the band to find it.
for (RebarBandItem band = (RebarBandItem) GetFirstChild (); band != null; band = (RebarBandItem) GetNextSibling (band))
{
if (band.HwndBand == hwnd)
{
return new RebarBandChildOverrideProxy (hwnd, band, band._item);
}
}
// Should never get here
return null;
}
#endregion IRawElementProviderHwndOverride Interface
// ------------------------------------------------------
//
// Private Methods
//
// ------------------------------------------------------
#region Private Methods
// Creates a list item RawElementBase Item
private RebarBandItem CreateRebarItem (int index)
{
return new RebarBandItem (_hwnd, this, index);
}
private int Count
{
get
{
return Misc.ProxySendMessageInt(_hwnd, NativeMethods.RB_GETBANDCOUNT, IntPtr.Zero, IntPtr.Zero);
}
}
private unsafe int getRebarBandIDFromPoint (NativeMethods.Win32Point pt)
{
NativeMethods.RB_HITTESTINFO rbHitTestInfo = new NativeMethods.RB_HITTESTINFO ();
rbHitTestInfo.pt = pt;
rbHitTestInfo.uFlags = 0;
rbHitTestInfo.iBand = 0;
return XSendMessage.XSendGetIndex(_hwnd, NativeMethods.RB_HITTEST, IntPtr.Zero, new IntPtr(&rbHitTestInfo), Marshal.SizeOf(rbHitTestInfo.GetType()));
}
#endregion
//------------------------------------------------------
//
// Private Fields
//
//------------------------------------------------------
#region Private Fields
private enum CommonControlStyles
{
// CCS_TOP = 0x00000001,
// CCS_NOMOVEY = 0x00000002,
// CCS_BOTTOM = 0x00000003,
// CCS_NORESIZE = 0x00000004,
// CCS_NOPARENTALIGN = 0x00000008,
// CCS_ADJUSTABLE = 0x00000020,
// CCS_NODIVIDER = 0x00000040,
CCS_VERT = 0x00000080,
// CCS_LEFT = (CCS_VERT | CCS_TOP),
// CCS_RIGHT = (CCS_VERT | CCS_BOTTOM),
// CCS_NOMOVEX = (CCS_VERT | CCS_NOMOVEY)
}
private const int RBBIM_CHILD = 0x10;
#endregion
// ------------------------------------------------------
//
// RebarBandItem Private Class
//
//------------------------------------------------------
#region RebarBandItem
class RebarBandItem: ProxyFragment, IInvokeProvider
{
// ------------------------------------------------------
//
// Constructors
//
// ------------------------------------------------------
#region Constructors
internal RebarBandItem (IntPtr hwnd, ProxyFragment parent, int item)
: base (hwnd, parent, item)
{
// Set the strings to return properly the properties.
_sType = ST.Get(STID.LocalizedControlTypeRebarBand);
_fIsContent = false;
}
#endregion
//------------------------------------------------------
//
// Patterns Implementation
//
//------------------------------------------------------
#region ProxySimple
// Gets the bounding rectangle for this element
internal override Rect BoundingRectangle
{
get
{
return GetBoundingRectangle (_hwnd, _item);
}
}
//Gets the controls help text
internal override string HelpText
{
get
{
IntPtr hwndToolTip = Misc.ProxySendMessage(_hwnd, NativeMethods.RB_GETTOOLTIPS, IntPtr.Zero, IntPtr.Zero);
return Misc.GetItemToolTipText(_hwnd, hwndToolTip, _item);
}
}
//Gets the localized name
internal override string LocalizedName
{
get
{
return ST.Get(STID.LocalizedNameWindowsReBarBandItem);
}
}
#endregion
#region ProxyFragment Interface
// Returns the next sibling element in the raw hierarchy.
// Peripheral controls have always negative values.
// Returns null if no next child
internal override ProxySimple GetNextSibling (ProxySimple child)
{
return null;
}
// Returns the previous sibling element in the raw hierarchy.
// Peripheral controls have always negative values.
// Returns null is no previous
internal override ProxySimple GetPreviousSibling (ProxySimple child)
{
return null;
}
// Returns the first child element in the raw hierarchy.
internal override ProxySimple GetFirstChild ()
{
IntPtr hwndBand = HwndBand;
if (hwndBand != IntPtr.Zero)
{
return new RebarBandChildOverrideProxy (HwndBand, this, _item);
}
return null;
}
// Returns the last child element in the raw hierarchy.
internal override ProxySimple GetLastChild ()
{
// By construction, a rebar band can only have one children
return GetFirstChild ();
}
// Returns a Proxy element corresponding to the specified screen coordinates.
internal override ProxySimple ElementProviderFromPoint (int x, int y)
{
IntPtr hwndBand = HwndBand;
if (hwndBand != IntPtr.Zero && Misc.PtInWindowRect(hwndBand, x, y))
{
return null;
}
return this;
}
internal override object GetElementProperty(AutomationProperty idProp)
{
if (idProp == AutomationElement.IsControlElementProperty)
{
//
//
return false;
}
return base.GetElementProperty(idProp);
}
#endregion
#region InvokeInteropPattern
void IInvokeProvider.Invoke ()
{
// Make sure that the control is enabled
if (!SafeNativeMethods.IsWindowEnabled(_hwnd))
{
throw new ElementNotEnabledException();
}
Misc.PostMessage(_hwnd, NativeMethods.RB_PUSHCHEVRON, (IntPtr)_item, IntPtr.Zero);
}
#endregion
//------------------------------------------------------
//
// Internal Methods
//
//------------------------------------------------------
#region Internal Methods
// Returns the bounding rectangle of the control.
internal static Rect GetBoundingRectangle (IntPtr hwnd, int item)
{
NativeMethods.Win32Rect rectW32 = NativeMethods.Win32Rect.Empty;
unsafe
{
if (!XSendMessage.XSend(hwnd, NativeMethods.RB_GETRECT, new IntPtr(item), new IntPtr(&rectW32), Marshal.SizeOf(rectW32.GetType()), XSendMessage.ErrorValue.Zero))
{
return Rect.Empty;
}
}
if (!Misc.MapWindowPoints(hwnd, IntPtr.Zero, ref rectW32, 2))
{
return Rect.Empty;
}
// Work around a bug in the common control. Swap the X and Y value for vertical
// rebar bands
if (Misc.IsBitSet(Misc.GetWindowStyle(hwnd), (int)CommonControlStyles.CCS_VERT))
{
return new Rect (rectW32.left, rectW32.top, rectW32.bottom - rectW32.top, rectW32.right - rectW32.left);
}
else
{
return rectW32.ToRect(Misc.IsControlRTL(hwnd));
}
}
internal IntPtr HwndBand
{
get
{
if (_hwndBand == IntPtr.Zero)
{
NativeMethods.REBARBANDINFO rebarBandInfo = new NativeMethods.REBARBANDINFO();
rebarBandInfo.fMask = RBBIM_CHILD;
unsafe
{
if (XSendMessage.XSend(_hwnd, NativeMethods.RB_GETBANDINFOA, new IntPtr(_item), new IntPtr(&rebarBandInfo), Marshal.SizeOf(rebarBandInfo.GetType()), XSendMessage.ErrorValue.Zero))
{
_hwndBand = rebarBandInfo.hwndChild;
}
}
}
return _hwndBand;
}
}
#endregion
//------------------------------------------------------
//
// Private Fields
//
//------------------------------------------------------
#region Private Fields
IntPtr _hwndBand = IntPtr.Zero;
#endregion
}
#endregion
// ------------------------------------------------------
//
// RebarBandChildOverrideProxy Private Class
//
//------------------------------------------------------
#region RebarBandChildOverrideProxy
class RebarBandChildOverrideProxy: ProxyHwnd
{
// ------------------------------------------------------
//
// Constructors
//
// ------------------------------------------------------
#region Constructors
internal RebarBandChildOverrideProxy (IntPtr hwnd, ProxyFragment parent, int item)
: base (hwnd, parent, item)
{
_fIsContent = false;
}
#endregion
//------------------------------------------------------
//
// Patterns Implementation
//
//------------------------------------------------------
#region ProxySimple Interface
internal override ProviderOptions ProviderOptions
{
get
{
return base.ProviderOptions | ProviderOptions.OverrideProvider;
}
}
// Process all the Logical and Raw Element Properties
internal override object GetElementProperty (AutomationProperty idProp)
{
if (idProp == AutomationElement.IsControlElementProperty)
{
//
//
// In IE6, the rebar band HWND tree was only one level deep:
//
// rebar / rebar band / rebar item (Toolbar32)
//
// In IE7, the HWND tree is the same but the rebar item is
// a window acting as another container, for instance:
//
// rebar / rebar band / rebar item (FavBandClass) / children (Toolbar32)
//
// Hide windows that are intermediate containers from the control view
Accessible accThis = Accessible.Wrap(this.AccessibleObject);
if ((accThis != null) && (accThis.ChildCount == 1))
{
Accessible accWind = accThis.FirstChild;
if ((accWind != null) && (accWind.Role == AccessibleRole.Window))
{
return false;
}
}
}
// No property should be handled by the override proxy
// Overrides the ProxySimple implementation.
return null;
}
#endregion
}
#endregion
}
}
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