private IHTMLElement GetNextElement(MarkupPointer start, MarkupRange boundaries, IHTMLElementFilter filter, bool forward)
{
start = start.Clone();
MarkupPointer boundary = forward ? boundaries.End : boundaries.Start;
MarkupContext moveResult = new MarkupContext();
_MARKUP_CONTEXT_TYPE skipContext = _MARKUP_CONTEXT_TYPE.CONTEXT_TYPE_ExitScope;
//advance the pointer
if (forward)
{
start.Right(true, moveResult);
}
else
{
start.Left(true, moveResult);
}
while (forward ? start.IsLeftOf(boundary) : start.IsRightOf(boundary))
{
if (moveResult.Element != null && moveResult.Context != skipContext && filter(moveResult.Element))
{
return(moveResult.Element);
}
//advance the pointer
if (forward)
{
start.Right(true, moveResult);
}
else
{
start.Left(true, moveResult);
}
}
return(null);
}
/// <summary>
/// Returns the bounds of line that the pointer is positioned within in client-based coordinates.
/// </summary>
/// <param name="pointer"></param>
/// <returns></returns>
protected Rectangle GetLineClientRectangle(MarkupPointer pointer)
{
//getting the line associated with a pointer is a little complicated because the
//ILineInfo for the pointer position only returns information based on the font
//exactly at that position. It does not take the max font height of the line into
//account, so we need to that manually. To do this, we get the LineInfo at each
//point in the line where the line height may change by moving a markup pointer
//in to each element declared on the line.
IDisplayServicesRaw displayServices = (IDisplayServicesRaw)HTMLElement.document;
//position a display pointer on the same line as the markup pointer
IDisplayPointerRaw displayPointer;
displayServices.CreateDisplayPointer(out displayPointer);
DisplayServices.TraceMoveToMarkupPointer(displayPointer, pointer);
//position a markup pointer at the end of the line
MarkupPointer pLineEnd = pointer.Clone();
displayPointer.MoveUnit(_DISPLAY_MOVEUNIT.DISPLAY_MOVEUNIT_CurrentLineEnd, 0);
displayPointer.PositionMarkupPointer(pLineEnd.PointerRaw);
//position a markup pointer at the start of the line
MarkupPointer pLineStart = pointer.Clone();
displayPointer.MoveUnit(_DISPLAY_MOVEUNIT.DISPLAY_MOVEUNIT_CurrentLineStart, 0);
displayPointer.PositionMarkupPointer(pLineStart.PointerRaw);
//calculate the maximum rectangle taken up by any text on this line by walking
//the lineStart pointer to the lineEnd pointer and calculating a max rectangle
//at each step.
Rectangle lineRect = GetLineRect(HTMLElement, displayPointer);
pLineStart.Right(true);
while (pLineStart.IsLeftOfOrEqualTo(pLineEnd))
{
Rectangle dpLineRect;
try
{
displayPointer.MoveToMarkupPointer(pLineStart.PointerRaw, null);
dpLineRect = GetLineRect(HTMLElement, displayPointer);
}
catch (COMException e)
{
if (e.ErrorCode == IE_CTL_E.INVALIDLINE)
{
// http://msdn.microsoft.com/en-us/library/aa752674(VS.85).aspx
// IDisplayPointer::MoveToMarkupPointer will return an error (CTL_E_INVALIDLINE),
// if the markup pointer is in a line whose nearest layout element *is not a flow layout element*.
dpLineRect = GetLineRect(pLineStart.CurrentScope);
// We also want to skip past the entire current scope...
pLineStart.MoveAdjacentToElement(pLineStart.CurrentScope, _ELEMENT_ADJACENCY.ELEM_ADJ_BeforeEnd);
}
else
{
Trace.Fail("Exception thrown in GetLineClientRectangle: " + e.ToString());
throw;
}
}
lineRect.Y = Math.Min(dpLineRect.Y, lineRect.Y);
if (lineRect.Bottom < dpLineRect.Bottom)
{
lineRect.Height += dpLineRect.Bottom - lineRect.Bottom;
}
pLineStart.Right(true);
}
//return the line rectangle
return(lineRect);
}
/// <summary>
/// Grabs HTML copied in the clipboard and pastes it into the document (pulls in a copy of embedded content too)
/// </summary>
protected override bool DoInsertData(DataAction action, MarkupPointer begin, MarkupPointer end)
{
using (new WaitCursor())
{
try
{
string baseUrl = UrlHelper.GetBasePathUrl(DataMeister.HTMLData.SourceURL);
string html = DataMeister.HTMLData.HTMLSelection;
//Check to see if the selection has an incomplete unordered list
var finder = new IncompleteListFinder(html);
finder.Parse();
if ((!EditorContext.CleanHtmlOnPaste) || finder.HasIncompleteList)
{
using (IUndoUnit undoUnit = EditorContext.CreateInvisibleUndoUnit())
{
// Create a new MarkupContainer off of EditorContext's document that contains the source HTML
// with comments marking the start and end selection.
MarkupContainer sourceContainer = EditorContext.MarkupServices.ParseString(DataMeister.HTMLData.HTMLWithMarkers);
// MSHTML's ParseString implementation clears all the attributes on the <body> element, so we
// have to manually add them back in.
CopyBodyAttributes(DataMeister.HTMLData.HTMLWithMarkers, sourceContainer.Document.body);
MarkupRange sourceRange = FindMarkedFragment(sourceContainer.Document,
HTMLDataObject.START_FRAGMENT_MARKER, HTMLDataObject.END_FRAGMENT_MARKER);
MshtmlMarkupServices sourceContainerMarkupServices =
new MshtmlMarkupServices((IMarkupServicesRaw)sourceContainer.Document);
// Some applications may not add the correct fragment markers (e.g. copying from Fiddler from
// the Web Sessions view). We'll just select the entire <body> of the clipboard in this case.
if (sourceRange == null)
{
sourceRange = sourceContainerMarkupServices.CreateMarkupRange(sourceContainer.Document.body, false);
}
else
{
// Make sure that we don't try to copy just parts of a table/list. We need to include the
// parent table/list.
if (!EditorContext.CleanHtmlOnPaste)
{
ExpandToIncludeTables(sourceRange, sourceContainerMarkupServices);
}
ExpandToIncludeLists(sourceRange, sourceContainerMarkupServices);
}
if (sourceRange != null)
{
if (!EditorContext.CleanHtmlOnPaste)
{
// WinLive 273280: Alignment on a table acts like a float, which can throw off the layout of the rest of
// the document. If there is nothing before or after the table, then we can safely remove the alignment.
RemoveAlignmentIfSingleTable(sourceRange);
// Serialize the source HTML to a string while keeping the source formatting.
MarkupRange destinationRange = EditorContext.MarkupServices.CreateMarkupRange(begin.Clone(), end.Clone());
html = KeepSourceFormatting(sourceRange, destinationRange);
}
else
{
html = sourceRange.HtmlText;
}
}
undoUnit.Commit();
}
Trace.Assert(html != null, "Inline source CSS failed!");
}
if (html == null)
{
html = DataMeister.HTMLData.HTMLSelection;
}
if (IsPasteFromSharedCanvas(DataMeister))
{
if (action == DataAction.Copy)
{
// WinLive 96840 - Copying and pasting images within shared canvas should persist source
// decorator settings. "wlCopySrcUrl" is inserted while copy/pasting within canvas.
html = EditorContext.FixImageReferences(ImageCopyFixupHelper.FixupSourceUrlForCopy(html),
DataMeister.HTMLData.SourceURL);
}
}
else
{
html = EditorContext.FixImageReferences(html, DataMeister.HTMLData.SourceURL);
HtmlCleanupRule cleanupRule = HtmlCleanupRule.Normal;
if (IsOfficeHtml(DataMeister.HTMLData))
{
cleanupRule = HtmlCleanupRule.PreserveTables;
}
// In Mail, we want to preserve the style of the html that is on the clipboard
// Whereas in Writer we by default want to remove formatting so it looks like your blog theme
if (EditorContext.CleanHtmlOnPaste)
{
// optionally cleanup the html
html = EditorContext.HtmlGenerationService.CleanupHtml(html, baseUrl, cleanupRule);
}
else
{
html = HtmlCleaner.StripNamespacedTagsAndCommentsAndMarkupDirectives(html);
}
// standard fixups
html = EditorContext.HtmlGenerationService.GenerateHtmlFromHtmlFragment(html, baseUrl);
}
// insert the content
if (EditorContext.MarshalHtmlSupported)
{
EditorContext.InsertHtml(begin, end, html, DataMeister.HTMLData.SourceURL);
}
else if (EditorContext.MarshalTextSupported)
{
// This is called only in the case that we're attempting to marshal HTML, but only
// text is supported. In this case, we should down convert to text and provide that.
html = HTMLDocumentHelper.HTMLToPlainText(html);
EditorContext.InsertHtml(begin, end, html, DataMeister.HTMLData.SourceURL);
}
else
{
Debug.Assert(false, "Html being inserted when text or html isn't supported.");
}
// Now select what was just inserted
EditorContext.MarkupServices.CreateMarkupRange(begin, end).ToTextRange().select();
//place the caret at the end of the inserted content
//EditorContext.MoveCaretToMarkupPointer(end, true);
return(true);
}
catch (Exception e)
{
//bugfix 1696, put exceptions into the trace log.
Trace.Fail("Exception while inserting HTML: " + e.Message, e.StackTrace);
return(false);
}
}
}
private void ApplyBlockStyleToRange(_ELEMENT_TAG_ID styleTagId, MarkupRange range, MarkupRange maximumBounds)
{
//update the range cling and gravity so it will stick with the re-arranged block content
range.Start.PushCling(false);
range.Start.PushGravity(_POINTER_GRAVITY.POINTER_GRAVITY_Left);
range.End.PushCling(false);
range.End.PushGravity(_POINTER_GRAVITY.POINTER_GRAVITY_Right);
try
{
MarkupPointer deeperPoint = GetDeeperPoint(range.Start, range.End);
MarkupPointer insertionPoint = _markupServices.CreateMarkupPointer(deeperPoint);
insertionPoint.Cling = false;
//if the insertion point parent block contains content, split the block. If the parent
//block is now empty, then just delete the parent block.
IHTMLElement parentBlock =
insertionPoint.GetParentElement(
ElementFilters.CreateCompoundElementFilter(ElementFilters.BLOCK_ELEMENTS,
new IHTMLElementFilter(IsSplitStopElement)));
//temporarily stage the range content at the end of the document so that the split
//operation doesn't damage the original range content
MarkupRange stagedBlockContent = _markupServices.CreateMarkupRange();
stagedBlockContent.Start.Gravity = _POINTER_GRAVITY.POINTER_GRAVITY_Left;
stagedBlockContent.End.Gravity = _POINTER_GRAVITY.POINTER_GRAVITY_Right;
stagedBlockContent.Start.MoveAdjacentToElement(GetBodyElement(), _ELEMENT_ADJACENCY.ELEM_ADJ_BeforeEnd);
stagedBlockContent.End.MoveToPointer(stagedBlockContent.Start);
MarkupPointer stagedBlockInsertionPoint = _markupServices.CreateMarkupPointer(GetBodyElement(), _ELEMENT_ADJACENCY.ELEM_ADJ_BeforeEnd);
stagedBlockInsertionPoint.Gravity = _POINTER_GRAVITY.POINTER_GRAVITY_Right;
// Pass over all opening elements between parent's adj_beforeend and the start of selection (range.start)
// Any element (_enterscope) that is not closed before the close of selection is essentially
// containing the selection completely, and needs to be copied into the staging area.
// ex: <p><a href="http://msn.com">abc[selection]def</a></p>
// Here, the <a> element encloses completely the selection and needs to be explicitly copied to the
// staging area.
for (MarkupPointer i = _markupServices.CreateMarkupPointer(parentBlock, _ELEMENT_ADJACENCY.ELEM_ADJ_AfterBegin);
i.IsLeftOf(range.Start); i.Right(true))
{
MarkupContext iContext = i.Right(false);
if (iContext.Context == _MARKUP_CONTEXT_TYPE.CONTEXT_TYPE_EnterScope && iContext.Element is IHTMLAnchorElement)
{
MarkupPointer j = _markupServices.CreateMarkupPointer(iContext.Element, _ELEMENT_ADJACENCY.ELEM_ADJ_BeforeEnd);
if (j.IsRightOfOrEqualTo(range.End))
{
// Copy the tag at posn. i to location stagedBlockInsertionPoint
// This is openning tag. Closing tag will be
// automatically added by MSHTML.
MarkupPointer i1 = i.Clone();
i1.Right(true);
_markupServices.Copy(i, i1, stagedBlockInsertionPoint);
// Skip over the closing tag, so stagedBlockInsertionPoint points between the openning and the closing
stagedBlockInsertionPoint.Left(true);
}
j.Unposition();
}
}
//move the range content into the staged position
_markupServices.Move(range.Start, range.End, stagedBlockInsertionPoint); stagedBlockInsertionPoint.Unposition();
bool splitBlock = !RemoveEmptyParentBlock(range.Clone(), parentBlock, maximumBounds);
// If the range endpoint NOT chosen as the insertion point lies in a different block element, and
// that parent block element is now empty, then just delete the parent block.
MarkupPointer shallowerPoint = (deeperPoint.IsEqualTo(range.Start)) ? range.End : range.Start;
MarkupPointer nonInsertionPoint = _markupServices.CreateMarkupPointer(shallowerPoint);
IHTMLElement otherParentBlock =
nonInsertionPoint.GetParentElement(
ElementFilters.CreateCompoundElementFilter(ElementFilters.BLOCK_ELEMENTS,
new IHTMLElementFilter(IsSplitStopElement)));
if (otherParentBlock.sourceIndex != parentBlock.sourceIndex)
{
RemoveEmptyParentBlock(range.Clone(), otherParentBlock, maximumBounds);
}
if (splitBlock)
{
//split the block at the insertion point
SplitBlockForApplyingBlockStyles(insertionPoint, maximumBounds);
}
//move the staged block content back to the insertion point and setup the range pointers
//to wrap the re-inserted block content.
range.Start.MoveToPointer(insertionPoint);
range.End.MoveToPointer(insertionPoint);
_markupServices.Move(stagedBlockContent.Start, stagedBlockContent.End, insertionPoint);
//Note: the range is now re-positioned around the same content, but all of the parent
//elements have been closed to prepare for getting new parent block elements around the
//range
//convert the range's content into block regions and remove block elements that were
//parenting the regions.
InnerBlockRegion[] blockRegions = GetNormalizedBlockContentRegions(range);
//update all of the block regions with the desired new block style element
foreach (InnerBlockRegion blockRegion in blockRegions)
{
IHTMLElement newParentElement = WrapRangeInBlockElement(blockRegion.ContentRange, styleTagId);
// The old parent element may have had an alignment set on it.
IHTMLElement oldParentElement = blockRegion.OldParentElement ?? parentBlock;
if (oldParentElement != null)
{
string oldAlignment = oldParentElement.getAttribute("align", 2) as string;
if (!String.IsNullOrEmpty(oldAlignment))
{
newParentElement.setAttribute("align", oldAlignment, 0);
}
}
}
}
finally
{
range.Start.PopCling();
range.Start.PopGravity();
range.End.PopCling();
range.End.PopGravity();
}
}