private static bool IsRightOf(this IMarkupPointer p1, IMarkupPointer p2)
{
int flag;
p1.IsRightOf(p2, out flag);
return(flag == NativeMethods.BOOL_TRUE);
}
public static bool compareLt(
IMarkupPointer p1,
IMarkupPointer p2)
{
int flag;
p1.IsLeftOf(p2, out flag);
return flag == NativeMethods.BOOL_TRUE;
}
public static bool compareGte(
IMarkupPointer p1,
IMarkupPointer p2)
{
int flag;
p1.IsRightOfOrEqualTo(p2, out flag);
return flag == NativeMethods.BOOL_TRUE;
}
public static bool CompareE(
IMarkupPointer p1,
IMarkupPointer p2)
{
int flag;
p1.IsEqualTo(p2, out flag);
return flag == NativeMethods.BOOL_TRUE;
}
public static bool compareLt(
IMarkupPointer p1,
IMarkupPointer p2)
{
int flag;
p1.IsLeftOf(p2, out flag);
return(flag == NativeMethods.BOOL_TRUE);
}
public static bool compareGte(
IMarkupPointer p1,
IMarkupPointer p2)
{
int flag;
p1.IsRightOfOrEqualTo(p2, out flag);
return(flag == NativeMethods.BOOL_TRUE);
}
public static bool CompareE(
IMarkupPointer p1,
IMarkupPointer p2)
{
int flag;
p1.IsEqualTo(p2, out flag);
return(flag == NativeMethods.BOOL_TRUE);
}
public static void CheckSwap(ref IMarkupPointer mpStart, ref IMarkupPointer mpEnd)
{
if (mpStart.IsRightOf(mpEnd))
{
var tmp = mpStart;
mpStart = mpEnd;
mpEnd = tmp;
}
}
public static void CheckSwap(ref IMarkupPointer mpStart, ref IMarkupPointer mpEnd)
{
if (mpStart.IsRightOf(mpEnd))
{
var tmp = mpStart;
mpStart = mpEnd;
mpEnd = tmp;
}
}
/// <summary>
/// Gets the current selection.
/// </summary>
/// <param name="selectionMPStart">The selection MP start.</param>
/// <param name="selectionMPEnd">The selection MP end.</param>
public void GetCurrentSelection(
out IMarkupPointer selectionMPStart,
out IMarkupPointer selectionMPEnd)
{
// get markup container of the whole document.
var mc = (IMarkupContainer)DomDocument;
// get the markup services.
var ms = (IMarkupServices)DomDocument;
// create two markup pointers.
ms.CreateMarkupPointer(out selectionMPStart);
ms.CreateMarkupPointer(out selectionMPEnd);
selectionMPStart.MoveToContainer(mc, NativeMethods.BOOL_TRUE);
selectionMPEnd.MoveToContainer(mc, NativeMethods.BOOL_TRUE);
// --
// position start and end pointers around the current selection.
IHTMLSelectionObject selection = DomDocument.selection;
string st = selection.type.ToLowerInvariant();
if (st == @"none")
{
var ds = (IDisplayServices)DomDocument;
IHTMLCaret caret;
ds.GetCaret(out caret);
caret.MoveMarkupPointerToCaret(selectionMPStart);
caret.MoveMarkupPointerToCaret(selectionMPEnd);
// set gravity, as in "Introduction to Markup Services" in MSDN.
selectionMPStart.SetGravity(_POINTER_GRAVITY.POINTER_GRAVITY_Right);
}
else if (st == @"text")
{
// MoveToSelectionAnchor does only work with "text" selections.
var selectionText = DomDocument.selection;
var range = (IHTMLTxtRange)selectionText.createRange();
ms.MovePointersToRange(range, selectionMPStart, selectionMPEnd);
// swap if wrong direction.
if (compareGt(selectionMPStart, selectionMPEnd))
{
var tmp = selectionMPStart;
selectionMPStart = selectionMPEnd;
selectionMPEnd = tmp;
}
// set gravity, as in "Introduction to Markup Services" in MSDN.
selectionMPStart.SetGravity(_POINTER_GRAVITY.POINTER_GRAVITY_Right);
}
else if (st == @"control")
{
// MoveToSelectionAnchor does only work with "text" selections.
var selectionControl = DomDocument.selection;
var range = selectionControl.createRange()
as IHTMLControlRange;
// Strangly, range was null sometimes.
// E.g. when I resized a table (=control selection)
// and then did an undo.
if (range != null)
{
if (range.length > 0)
{
var start = range.item(0);
var end = range.item(range.length - 1);
selectionMPStart.MoveAdjacentToElement(
start,
_ELEMENT_ADJACENCY.ELEM_ADJ_BeforeBegin);
selectionMPEnd.MoveAdjacentToElement(
end,
_ELEMENT_ADJACENCY.ELEM_ADJ_AfterEnd);
}
}
}
else
{
// is there yet another selection type?
//Debug.Assert(false);
}
}
private static bool IsRightOf(this IMarkupPointer p1, IMarkupPointer p2)
{
int flag;
p1.IsRightOf(p2, out flag);
return flag == NativeMethods.BOOL_TRUE;
}
public void GetCurrentSelection(
out IMarkupPointer selectionMPStart,
out IMarkupPointer selectionMPEnd)
{
if (!EverInitialized)
{
selectionMPStart = null;
selectionMPEnd = null;
return;
}
// get markup container of the whole document.
var mc = (IMarkupContainer)DomDocument;
// get the markup services.
var ms = (IMarkupServices)DomDocument;
// create two markup pointers.
ms.CreateMarkupPointer(out selectionMPStart);
ms.CreateMarkupPointer(out selectionMPEnd);
selectionMPStart.MoveToContainer(mc, NativeMethods.BOOL_TRUE);
selectionMPEnd.MoveToContainer(mc, NativeMethods.BOOL_TRUE);
// --
// position start and end pointers around the current selection.
var selection = DomDocument.selection;
var st = selection.type.ToLowerInvariant();
switch (st)
{
case @"none":
{
var ds = (IDisplayServices)DomDocument;
IHTMLCaret caret;
ds.GetCaret(out caret);
caret.MoveMarkupPointerToCaret(selectionMPStart);
caret.MoveMarkupPointerToCaret(selectionMPEnd);
// Set gravity, as in "Introduction to Markup Services" in MSDN.
// http://msdn.microsoft.com/en-us/library/bb508514(v=vs.85).aspx
selectionMPStart.SetGravity(_POINTER_GRAVITY.POINTER_GRAVITY_Right);
}
break;
case @"text":
{
// MoveToSelectionAnchor does only work with "text" selections.
var selectionText = DomDocument.selection;
var range = (IHTMLTxtRange)selectionText.createRange();
ms.MovePointersToRange(range, selectionMPStart, selectionMPEnd);
// swap if wrong direction.
if (compareGt(selectionMPStart, selectionMPEnd))
{
var tmp = selectionMPStart;
selectionMPStart = selectionMPEnd;
selectionMPEnd = tmp;
}
// Set gravity, as in "Introduction to Markup Services" in MSDN.
// http://msdn.microsoft.com/en-us/library/bb508514(v=vs.85).aspx
selectionMPStart.SetGravity(_POINTER_GRAVITY.POINTER_GRAVITY_Right);
}
break;
case @"control":
{
// MoveToSelectionAnchor does only work with "text" selections.
var selectionControl = DomDocument.selection;
var range = selectionControl.createRange() as IHTMLControlRange;
// Strangly, range was null sometimes.
// E.g. when I resized a table (=control selection)
// and then did an undo.
if (range?.length > 0)
{
var start = range.item(0);
var end = range.item(range.length - 1);
selectionMPStart.MoveAdjacentToElement(
start,
_ELEMENT_ADJACENCY.ELEM_ADJ_BeforeBegin);
selectionMPEnd.MoveAdjacentToElement(
end,
_ELEMENT_ADJACENCY.ELEM_ADJ_AfterEnd);
}
}
break;
}
}
