internal bool AreGroupsValid()
{
int count = _groups.Count;
for (int i = 0; i < count; i++)
{
Group group = (Group)_groups[i];
if (!ListViewHasGroup(_hwnd, group._groupID))
{
return(false);
}
}
// Make sure that no new group have been added, try to match all the GroupId to an
// existing one.
int itemCount = WindowsListView.GetItemCount(_hwnd);
NativeMethods.LVITEM_V6 item = new NativeMethods.LVITEM_V6();
item.mask = NativeMethods.LVIF_GROUPID;
for (item.iItem = 0; item.iItem < itemCount; item.iItem++)
{
if (!XSendMessage.GetItem(_hwnd, ref item) || GetGroup(item.iGroupID) == null)
{
return(false);
}
}
return(true);
}
// ------------------------------------------------------
//
// 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);
}
// ------------------------------------------------------
//
// Constructors
//
// ------------------------------------------------------
#region Constructors
internal ToolbarItem(IntPtr hwnd, ProxyFragment parent, int item, int idCommand)
: base(hwnd, parent, item)
{
_idCommand = idCommand;
NativeMethods.TBBUTTON tbb = new NativeMethods.TBBUTTON();
int buttonStyle = 0;
if (XSendMessage.GetItem(_hwnd, _item, ref tbb))
{
buttonStyle = tbb.fsStyle;
}
// Set the strings to return properly the properties.
bool hasImageList = Misc.ProxySendMessageInt(_hwnd, NativeMethods.TB_GETIMAGELIST, IntPtr.Zero, IntPtr.Zero) != 0;
int exStyle = Misc.ProxySendMessageInt(_hwnd, NativeMethods.TB_GETEXTENDEDSTYLE, IntPtr.Zero, IntPtr.Zero);
_isToggleButton = false;
_cControlType = ControlType.Button;
// If a separator, say so
if (Misc.IsBitSet(buttonStyle, NativeMethods.BTNS_SEP))
{
_cControlType = ControlType.Separator;
}
else if (Misc.IsBitSet(buttonStyle, NativeMethods.BTNS_CHECK))
{
// Special case for task list - they use the checked style, but only for visuals...
IntPtr hwndParent = Misc.GetParent(_hwnd);
if (Misc.GetClassName(hwndParent) != "MSTaskSwWClass")
{
_isToggleButton = true;
}
}
else if (Misc.IsBitSet(buttonStyle, NativeMethods.BTNS_DROPDOWN) &&
Misc.IsBitSet(exStyle, NativeMethods.TBSTYLE_EX_DRAWDDARROWS))
{
// if its a drop down and it has an arrow its a split button
_cControlType = ControlType.SplitButton;
}
else if (!hasImageList || tbb.iBitmap == NativeMethods.I_IMAGENONE)
{
// Text-only, no bitmap, so it's effectively a menu item.
// (eg. as used in MMC)
_cControlType = ControlType.MenuItem;
}
_fIsContent = _cControlType != ControlType.Separator;
// The Start Menu's "Shut Down" and "Log Off" buttons are toolbar items. They need to have the
// KeyboardFocusable property be set to true.
_fIsKeyboardFocusable = (bool)parent.GetElementProperty(AutomationElement.IsKeyboardFocusableProperty);
GetItemId(ref _sAutomationId);
}
private void GetItemId(ref string itemId)
{
NativeMethods.TBBUTTON tbb = new NativeMethods.TBBUTTON();
if (XSendMessage.GetItem(_hwnd, _item, ref tbb))
{
if (tbb.idCommand > 0)
{
itemId = "Item " + tbb.idCommand.ToString(CultureInfo.CurrentCulture);
}
}
}
private int GetItemFromIndex(int index)
{
NativeMethods.HDITEM item = new NativeMethods.HDITEM();
item.Init();
item.mask = NativeMethods.HDI_ORDER;
// Send the message...
if (!XSendMessage.GetItem(_hwnd, index, ref item))
{
return(-1);
}
return(item.iOrder);
}
// retrieve an id of the group to which this lvitem belongs
// valid only if lv has groups enabled
static internal int GetGroupID(IntPtr hwnd, int lvItem)
{
System.Diagnostics.Debug.Assert(WindowsListView.IsGroupViewEnabled(hwnd), "GetGroupID: called when lv does not have groups");
NativeMethods.LVITEM_V6 item = new NativeMethods.LVITEM_V6();
item.mask = NativeMethods.LVIF_GROUPID;
item.iItem = lvItem;
if (XSendMessage.GetItem(hwnd, ref item))
{
return(item.iGroupID);
}
return(-1);
}
// This is new with v6 comctrl on Vista
private bool IsSplitButton()
{
NativeMethods.HDITEM item = new NativeMethods.HDITEM();
item.Init();
item.mask = NativeMethods.HDI_FORMAT;
// Send the message...
if (XSendMessage.GetItem(_hwnd, _item, ref item))
{
if ((item.fmt & NativeMethods.HDF_SPLITBUTTON) != 0)
{
return(true);
}
}
return(false);
}
private static unsafe GroupManager InitializeManager(IntPtr hwnd)
{
bool isComctrlV6OnOsVerV6orHigher = Misc.IsComctrlV6OnOsVerV6orHigher(hwnd);
int itemCount = WindowsListView.GetItemCount(hwnd);
NativeMethods.LVITEM_V6 item = new NativeMethods.LVITEM_V6();
item.mask = NativeMethods.LVIF_GROUPID;
// The only place where the GroupManager gets constructed
GroupManager manager = new GroupManager(itemCount, hwnd, isComctrlV6OnOsVerV6orHigher);
if (isComctrlV6OnOsVerV6orHigher)
{
NativeMethods.LVITEMINDEX ii = new NativeMethods.LVITEMINDEX(-1, -1);
int flags = NativeMethods.LVNI_VISIBLEONLY | NativeMethods.LVNI_VISIBLEORDER;
// When a listview is being "grouped by" an item may be in more than one group. The itemCount
// is the number of unique items. This loop may iterate for more than the unique items in the group.
// We are taking advantage of that fact the the array list will expand if there are alot of duplicates.
while (XSendMessage.XSend(hwnd, NativeMethods.LVM_GETNEXTITEMINDEX, new IntPtr(&ii), flags, Marshal.SizeOf(ii.GetType())))
{
// need to convert the item id to a group id
NativeMethods.LVGROUP_V6 groupInfo = new NativeMethods.LVGROUP_V6();
groupInfo.Init(Marshal.SizeOf(typeof(NativeMethods.LVGROUP_V6)));
groupInfo.mask = NativeMethods.LVGF_GROUPID;
bool lresult = XSendMessage.XSend(hwnd, NativeMethods.LVM_GETGROUPINFOBYINDEX, new IntPtr(ii.iGroup), new IntPtr(&groupInfo), Marshal.SizeOf(typeof(NativeMethods.LVGROUP_V6)));
if (!lresult)
{
if (groupInfo.iGroupID == -1)
{
// A -1 here means that there are no duplicates in this grouped listview so
// we have to get the group the old way. This is done for performance reasons.
break;
}
// no group for this item should never happen.
// If it ever does the other items might ok so just keep going.
continue;
}
if (!manager.Add(groupInfo.iGroupID, ii.iItem))
{
// we had problem adding item to the needed group at this point it makes no
// sense to continue
System.Diagnostics.Debug.Assert(false, "Cannot add item to the needed group");
return(null);
}
}
}
bool sortNeeded = false;
// If the code above did not yield anything try this way. This will work for
// listviews pre Vista and grouped listviews in vista that don't have duplicate items.
if (manager.GroupCount() == 0)
{
// if we get the groups this way they need to be sorted. The code above brings them in sorted.
sortNeeded = true;
int current = 0;
while (current < itemCount)
{
item.iItem = current;
if (XSendMessage.GetItem(hwnd, ref item) && manager.Add(item.iGroupID, item.iItem))
{
current++;
}
else
{
// we had problem adding item to the needed group at this point it makes no
// sense to continue
System.Diagnostics.Debug.Assert(false, "Cannot add item to the needed group");
return(null);
}
}
}
// Sort items within the group
int groupsCount = manager.GroupCount();
for (int i = 0; i < groupsCount; i++)
{
Group group = (Group)manager._groups[i];
Array.Sort(group.Items, 0, group.Count, new SortGroupItems(hwnd));
}
// Depending on how we got the group info we may need to sort it.
// In vista the the listview can put the list items in the correct order.
// Pre vista or old ui (v5) will always need to be sorted.
if (sortNeeded)
{
// Sort groups
manager._groups.Sort(new SortGroups(hwnd));
}
return(manager);
}
//------------------------------------------------------
//
// Internal Methods
//
//------------------------------------------------------
#region Internal Methods
// get focused element
internal static ProxySimple GetFocusInGroup(IntPtr hwnd, ProxyFragment parent)
{
int index = WindowsListView.GetItemNext(hwnd, -1, NativeMethods.LVNI_FOCUSED);
if (index != -1)
{
// get id of the group to which item belongs
NativeMethods.LVITEM_V6 item = new NativeMethods.LVITEM_V6();
item.mask = NativeMethods.LVIF_GROUPID;
item.iItem = index;
if (XSendMessage.GetItem(hwnd, ref item))
{
WindowsListViewGroup group = new WindowsListViewGroup(hwnd, parent, item.iGroupID);
return(new ListViewItem(hwnd, group, index));
}
}
else
{
// if none of the items have focus see if the focus is on the subset link
// this only exists in v6 comctrl on vista or later.
if (Misc.IsComctrlV6OnOsVerV6orHigher(hwnd))
{
int groupIndex = (int)Misc.ProxySendMessage(hwnd, NativeMethods.LVM_GETFOCUSEDGROUP, IntPtr.Zero, IntPtr.Zero);
// need to convert the item id to a group id
NativeMethods.LVGROUP_V6 groupInfo = new NativeMethods.LVGROUP_V6();
groupInfo.Init(Marshal.SizeOf(typeof(NativeMethods.LVGROUP_V6)));
groupInfo.mask = NativeMethods.LVGF_GROUPID;
unsafe
{
bool lresult = XSendMessage.XSend(hwnd, NativeMethods.LVM_GETGROUPINFOBYINDEX, new IntPtr(groupIndex), new IntPtr(&groupInfo), Marshal.SizeOf(typeof(NativeMethods.LVGROUP_V6)));
if (!lresult)
{
// no group for this item should never happen.
return(null);
}
}
int groupId = groupInfo.iGroupID;
groupInfo.Init(Marshal.SizeOf(typeof(NativeMethods.LVGROUP_V6)));
groupInfo.iGroupID = groupId;
groupInfo.mask = NativeMethods.LVGF_STATE;
groupInfo.stateMask = NativeMethods.LVGS_SUBSETLINKFOCUSED;
// Note: return code of GetGroupInfo() is not reliable.
XSendMessage.GetGroupInfo(hwnd, ref groupInfo); // ignore return code.
if ((groupInfo.state & NativeMethods.LVGS_SUBSETLINKFOCUSED) != 0)
{
GroupManager.GroupInfo groupManagerInfo = GetGroupInfo(hwnd, groupId);
int [] items = groupManagerInfo._items;
if (groupManagerInfo._count <= 0 || groupManagerInfo._count >= items.Length)
{
return(null);
}
int sslIndex = items [groupManagerInfo._count - 1];
// The items array holds the list items in this group. If we have a subset link we
// don't store it with the list items because it isn't really a list item. Instead we just
// create the subset link proxy with an item index one more than the last index.
WindowsListViewGroup group = new WindowsListViewGroup(hwnd, parent, groupId);
return(group.CreateGroupSubsetLink(sslIndex + 1));
}
else
{
return(new WindowsListViewGroup(hwnd, parent, groupId));
}
}
}
return(null);
}