// ------------------------------------------------------
//
// Internal Methods
//
// ------------------------------------------------------
#region Internal Methods
// Create a WindowsToolbar instance. Needs to be internal because
// ApplicationWindow pattern needs to call this so needs to be internal
internal ProxySimple CreateToolbarItem(int item)
{
NativeMethods.TBBUTTON tbb = new NativeMethods.TBBUTTON();
// During the FocusChanged WinEvent (EVENT_OBJECT_FOCUS),
// some "ToolbarWindow32" children report an item ID (child id)
// of 0x80000001, 0x80000002, etc. instead of 1, 2, etc.
// However, when created as children of the parent toolbar,
// these same items are assigned IDs of 1, 2, etc.
// Therefore, map negative item IDs of the form 0x80000001,
// 0x80000002, etc. to 1, 2, etc.
item = (int)(~0x80000000 & (uint)item);
if (!XSendMessage.GetItem(_hwnd, item, ref tbb))
{
// If failed to get button infromation the button must not exist, so return null.
return(null);
}
if (Misc.ProxySendMessageInt(_hwnd, NativeMethods.TB_ISBUTTONHIDDEN, new IntPtr(tbb.idCommand), IntPtr.Zero) == 0)
{
Accessible acc = Accessible.CreateNativeFromEvent(_hwnd, NativeMethods.OBJID_CLIENT, item + 1);
if (acc != null)
{
if (acc.Role == AccessibleRole.MenuItem)
{
return(new ToolbarItemAsMenuItem(_hwnd, this, item, tbb.idCommand, acc));
}
}
return(new ToolbarItem(_hwnd, this, item, tbb.idCommand));
}
return(null);
}
internal static IRawElementProviderSimple Create(IntPtr hwnd, int idChild)
{
WindowsToolbar wtv = null;
// By calling Accessible.CreateNativeFromEvent() instead of AccessibleObjectFromWindow() only controls with a native
// implementation of IAccessible will be found. OleAcc will not create a IAccessible proxy, since
// Accessible.CreateNativeFromEvent() by passes OleAcc by sending a WM_GETOBJECT directly to the control and creating
// IAccessible from the return, if it can.
Accessible acc = Accessible.CreateNativeFromEvent(hwnd, NativeMethods.OBJID_CLIENT, NativeMethods.CHILD_SELF);
if (acc != null)
{
AccessibleRole role = acc.Role;
if (role == AccessibleRole.MenuBar || role == AccessibleRole.MenuPopup)
{
wtv = new WindowsToolbarAsMenu(hwnd, null, 0, acc);
}
}
if (wtv == null)
{
wtv = new WindowsToolbar(hwnd, null, 0);
}
return(idChild == 0 ? wtv : wtv.CreateToolbarItem(idChild - 1));
}
// Returns an item corresponding to the focused element (if there is one), or null otherwise.
internal override ProxySimple GetFocus()
{
int focusIndex = Misc.ProxySendMessageInt(_hwnd, NativeMethods.TB_GETHOTITEM, IntPtr.Zero, IntPtr.Zero);
if (focusIndex >= 0)
{
Accessible acc = Accessible.CreateNativeFromEvent(_hwnd, NativeMethods.OBJID_CLIENT, NativeMethods.CHILD_SELF);
if (acc != null)
{
AccessibleRole role = acc.Role;
if (role == AccessibleRole.MenuBar || role == AccessibleRole.MenuPopup)
{
return(new WindowsToolbarAsMenu(_hwnd, this, focusIndex, acc));
}
}
return(new WindowsToolbar(_hwnd, this, focusIndex));
}
else
{
return(null);
}
}