public static void SplitBlockForInsertionOrBreakout(MshtmlMarkupServices markupServices, MarkupRange bounds, MarkupPointer insertAt) { IHTMLElement currentBlock = insertAt.GetParentElement(ElementFilters.BLOCK_OR_TABLE_CELL_ELEMENTS); if (currentBlock == null) { return; } if (ElementFilters.IsBlockQuoteElement(currentBlock) || ElementFilters.IsTableCellElement(currentBlock)) { return; } MarkupPointer blockStart = markupServices.CreateMarkupPointer(currentBlock, _ELEMENT_ADJACENCY.ELEM_ADJ_BeforeBegin); MarkupPointer blockEnd = markupServices.CreateMarkupPointer(currentBlock, _ELEMENT_ADJACENCY.ELEM_ADJ_AfterEnd); if (bounds != null && (blockStart.IsLeftOf(bounds.Start) || blockEnd.IsRightOf(bounds.End))) { return; } // Don't split if at the beginning or end of the visible content in the block. // Instead just move the insertion point outside the block. MarkupRange testRange = markupServices.CreateMarkupRange(); testRange.Start.MoveToPointer(insertAt); testRange.End.MoveAdjacentToElement(currentBlock, _ELEMENT_ADJACENCY.ELEM_ADJ_BeforeEnd); if (testRange.IsEmptyOfContent()) { insertAt.MoveAdjacentToElement(currentBlock, _ELEMENT_ADJACENCY.ELEM_ADJ_AfterEnd); return; } testRange.Start.MoveAdjacentToElement(currentBlock, _ELEMENT_ADJACENCY.ELEM_ADJ_AfterBegin); testRange.End.MoveToPointer(insertAt); if (testRange.IsEmptyOfContent()) { insertAt.MoveAdjacentToElement(currentBlock, _ELEMENT_ADJACENCY.ELEM_ADJ_BeforeBegin); return; } MarkupPointer moveTarget = markupServices.CreateMarkupPointer(blockEnd); markupServices.Move(insertAt, blockEnd, moveTarget); insertAt.MoveAdjacentToElement(currentBlock, _ELEMENT_ADJACENCY.ELEM_ADJ_AfterEnd); }
private void ApplyBlockStyle(_ELEMENT_TAG_ID styleTagId, MarkupRange selection, MarkupRange maximumBounds, MarkupRange postOpSelection) { Debug.Assert(selection != maximumBounds, "selection and maximumBounds must be distinct objects"); SelectionPositionPreservationCookie selectionPreservationCookie = null; //update the range cling and gravity so it will stick with the re-arranged block content selection.Start.PushCling(false); selection.Start.PushGravity(_POINTER_GRAVITY.POINTER_GRAVITY_Left); selection.End.PushCling(false); selection.End.PushGravity(_POINTER_GRAVITY.POINTER_GRAVITY_Right); try { if (selection.IsEmpty()) { //nothing is selected, so expand the selection to cover the entire parent block element IHTMLElementFilter stopFilter = ElementFilters.CreateCompoundElementFilter(ElementFilters.BLOCK_ELEMENTS, new IHTMLElementFilter(IsSplitStopElement)); MovePointerLeftUntilRegionBreak(selection.Start, stopFilter, maximumBounds.Start); MovePointerRightUntilRegionBreak(selection.End, stopFilter, maximumBounds.End); } using (IUndoUnit undo = _editor.CreateSelectionUndoUnit(selection)) { selectionPreservationCookie = SelectionPositionPreservationHelper.Save(_markupServices, postOpSelection, selection); if (selection.IsEmptyOfContent()) { ApplyBlockFormatToEmptySelection(selection, styleTagId, maximumBounds); } else { ApplyBlockFormatToContentSelection(selection, styleTagId, maximumBounds); } undo.Commit(); } } finally { selection.Start.PopCling(); selection.Start.PopGravity(); selection.End.PopCling(); selection.End.PopGravity(); } if (!SelectionPositionPreservationHelper.Restore(selectionPreservationCookie, selection, selection.Clone())) selection.ToTextRange().select(); }
/// <summary> /// Returns true if there is non-empty content between 2 pointers. /// </summary> /// <param name="start"></param> /// <param name="end"></param> /// <returns>true if there is visible content between the pointers</returns> private bool HasContentBetween(MarkupPointer start, MarkupPointer end) { MarkupRange range = MarkupServices.CreateMarkupRange(start, end); return(!range.IsEmptyOfContent(false)); }
/// <summary> /// Returns true if the parent element was removed and false otherwise. /// </summary> private bool RemoveEmptyParentBlock(MarkupRange range, IHTMLElement parentBlock, MarkupRange maximumBounds) { if (parentBlock != null) { range.MoveToElement(parentBlock, false); if (maximumBounds.InRange(range) && range.IsEmptyOfContent()) { if (!IsSplitStopElement(parentBlock)) { //delete the parent node (only if it doesn't fall outside the maxrange (bug 465995)) range.MoveToElement(parentBlock, true); //expand the range around deletion area to test for maxBounds exceeded if (maximumBounds.InRange(range)) { (parentBlock as IHTMLDOMNode).removeNode(true); return true; } } } } return false; }