` elements // if aHTMLEditor is not in CSS mode. if (NS_WARN_IF(!aHTMLEditor.GetRoot())) { aRv.Throw(NS_ERROR_FAILURE); return; } OwningNonNull bodyOrDocumentElement = *aHTMLEditor.GetRoot(); EditorRawDOMPoint atBodyOrDocumentElement(bodyOrDocumentElement); const nsRange* firstRange = aHTMLEditor.SelectionRef().GetRangeAt(0); mFoundSelectionRanges = !!firstRange; if (!mFoundSelectionRanges) { NS_WARNING("There was no selection range"); aRv.Throw(NS_ERROR_FAILURE); return; } EditorRawDOMPoint atStartOfSelection(firstRange->StartRef()); if (NS_WARN_IF(!atStartOfSelection.IsSet())) { aRv.Throw(NS_ERROR_FAILURE); return; } MOZ_ASSERT(atStartOfSelection.IsSetAndValid()); nsIContent* editTargetContent = nullptr; // If selection is collapsed or in a text node, take the container. if (aHTMLEditor.SelectionRef().IsCollapsed() || atStartOfSelection.IsInTextNode()) { editTargetContent = atStartOfSelection.GetContainerAs(); if (NS_WARN_IF(!editTargetContent)) { aRv.Throw(NS_ERROR_FAILURE); return; } } // If selection container is the `` element which is set to // `HTMLDocument.body`, take first editable node in it. // XXX Why don't we just compare `atStartOfSelection.GetChild()` and // `bodyOrDocumentElement`? Then, we can avoid computing the // offset. else if (atStartOfSelection.IsContainerHTMLElement(nsGkAtoms::html) && atBodyOrDocumentElement.IsSet() && atStartOfSelection.Offset() == atBodyOrDocumentElement.Offset()) { editTargetContent = HTMLEditUtils::GetNextContent( atStartOfSelection, {WalkTreeOption::IgnoreNonEditableNode}, aHTMLEditor.ComputeEditingHost()); if (NS_WARN_IF(!editTargetContent)) { aRv.Throw(NS_ERROR_FAILURE); return; } } // Otherwise, use first selected node. // XXX Only for retreiving it, the following block treats all selected // ranges. `HTMLEditor` should have // `GetFirstSelectionRangeExtendedToHardLineStartAndEnd()`. else { Element* editingHostOrRoot = aHTMLEditor.ComputeEditingHost(); if (!editingHostOrRoot) { // This is not a handler of editing command so that if there is no active // editing host, let's use the or document element instead. editingHostOrRoot = aHTMLEditor.GetRoot(); if (!editingHostOrRoot) { return; } } AutoRangeArray extendedSelectionRanges(aHTMLEditor.SelectionRef()); extendedSelectionRanges.ExtendRangesToWrapLinesToHandleBlockLevelEditAction( EditSubAction::eSetOrClearAlignment, *editingHostOrRoot); AutoTArray, 64> arrayOfContents; nsresult rv = extendedSelectionRanges.CollectEditTargetNodes( aHTMLEditor, arrayOfContents, EditSubAction::eSetOrClearAlignment, AutoRangeArray::CollectNonEditableNodes::Yes); if (NS_FAILED(rv)) { NS_WARNING( "AutoRangeArray::CollectEditTargetNodes(eSetOrClearAlignment, " "CollectNonEditableNodes::Yes) failed"); aRv.Throw(NS_ERROR_FAILURE); return; } if (arrayOfContents.IsEmpty()) { NS_WARNING( "AutoRangeArray::CollectEditTargetNodes(eSetOrClearAlignment, " "CollectNonEditableNodes::Yes) returned no contents"); aRv.Throw(NS_ERROR_FAILURE); return; } editTargetContent = arrayOfContents[0]; } const RefPtr maybeNonEditableBlockElement = HTMLEditUtils::GetInclusiveAncestorElement( *editTargetContent, HTMLEditUtils::ClosestBlockElement); if (NS_WARN_IF(!maybeNonEditableBlockElement)) { aRv.Throw(NS_ERROR_FAILURE); return; } if (aHTMLEditor.IsCSSEnabled() && EditorElementStyle::Align().IsCSSSettable( *maybeNonEditableBlockElement)) { // We are in CSS mode and we know how to align this element with CSS nsAutoString value; // Let's get the value(s) of text-align or margin-left/margin-right DebugOnly rvIgnored = CSSEditUtils::GetComputedCSSEquivalentTo( *maybeNonEditableBlockElement, EditorElementStyle::Align(), value); if (NS_WARN_IF(aHTMLEditor.Destroyed())) { aRv.Throw(NS_ERROR_EDITOR_DESTROYED); return; } NS_WARNING_ASSERTION(NS_SUCCEEDED(rvIgnored), "CSSEditUtils::GetComputedCSSEquivalentTo(" "EditorElementStyle::Align()) failed, but ignored"); if (value.EqualsLiteral(u"center") || value.EqualsLiteral(u"-moz-center") || value.EqualsLiteral(u"auto auto")) { mFirstAlign = nsIHTMLEditor::eCenter; return; } if (value.EqualsLiteral(u"right") || value.EqualsLiteral(u"-moz-right") || value.EqualsLiteral(u"auto 0px")) { mFirstAlign = nsIHTMLEditor::eRight; return; } if (value.EqualsLiteral(u"justify")) { mFirstAlign = nsIHTMLEditor::eJustify; return; } // XXX In RTL document, is this expected? mFirstAlign = nsIHTMLEditor::eLeft; return; } for (Element* const containerElement : editTargetContent->InclusiveAncestorsOfType()) { // If the node is a parent `` element of edit target, let's break // here to materialize the 'inline-block' behaviour of html tables // regarding to text alignment. if (containerElement != editTargetContent && containerElement->IsHTMLElement(nsGkAtoms::table)) { return; } if (EditorElementStyle::Align().IsCSSSettable(*containerElement)) { nsAutoString value; DebugOnly rvIgnored = CSSEditUtils::GetSpecifiedProperty( *containerElement, *nsGkAtoms::textAlign, value); NS_WARNING_ASSERTION(NS_SUCCEEDED(rvIgnored), "CSSEditUtils::GetSpecifiedProperty(nsGkAtoms::" "textAlign) failed, but ignored"); if (!value.IsEmpty()) { if (value.EqualsLiteral("center")) { mFirstAlign = nsIHTMLEditor::eCenter; return; } if (value.EqualsLiteral("right")) { mFirstAlign = nsIHTMLEditor::eRight; return; } if (value.EqualsLiteral("justify")) { mFirstAlign = nsIHTMLEditor::eJustify; return; } if (value.EqualsLiteral("left")) { mFirstAlign = nsIHTMLEditor::eLeft; return; } // XXX // text-align: start and end aren't supported yet } } if (!HTMLEditUtils::SupportsAlignAttr(*containerElement)) { continue; } nsAutoString alignAttributeValue; containerElement->GetAttr(kNameSpaceID_None, nsGkAtoms::align, alignAttributeValue); if (alignAttributeValue.IsEmpty()) { continue; } if (alignAttributeValue.LowerCaseEqualsASCII("center")) { mFirstAlign = nsIHTMLEditor::eCenter; return; } if (alignAttributeValue.LowerCaseEqualsASCII("right")) { mFirstAlign = nsIHTMLEditor::eRight; return; } // XXX This is odd case. `

` is not in any standards. if (alignAttributeValue.LowerCaseEqualsASCII("justify")) { mFirstAlign = nsIHTMLEditor::eJustify; return; } // XXX In RTL document, is this expected? mFirstAlign = nsIHTMLEditor::eLeft; return; } } /***************************************************************************** * ParagraphStateAtSelection ****************************************************************************/ ParagraphStateAtSelection::ParagraphStateAtSelection(HTMLEditor& aHTMLEditor, ErrorResult& aRv) { if (NS_WARN_IF(aHTMLEditor.Destroyed())) { aRv = EditorBase::ToGenericNSResult(NS_ERROR_EDITOR_DESTROYED); return; } // XXX Should we create another constructor which won't create // AutoEditActionDataSetter? Or should we create another // AutoEditActionDataSetter which won't nest edit action? EditorBase::AutoEditActionDataSetter editActionData(aHTMLEditor, EditAction::eNotEditing); if (NS_WARN_IF(!editActionData.CanHandle())) { aRv = EditorBase::ToGenericNSResult(NS_ERROR_EDITOR_DESTROYED); return; } if (aHTMLEditor.IsSelectionRangeContainerNotContent()) { NS_WARNING("Some selection containers are not content node, but ignored"); return; } Element* editingHostOrRoot = aHTMLEditor.ComputeEditingHost(); if (!editingHostOrRoot) { // This is not a handler of editing command so that if there is no active // editing host, let's use the or document element instead. editingHostOrRoot = aHTMLEditor.GetRoot(); if (!editingHostOrRoot) { return; } } AutoTArray, 64> arrayOfContents; nsresult rv = CollectEditableFormatNodesInSelection( aHTMLEditor, *editingHostOrRoot, arrayOfContents); if (NS_FAILED(rv)) { NS_WARNING( "ParagraphStateAtSelection::CollectEditableFormatNodesInSelection() " "failed"); aRv.Throw(rv); return; } // We need to append descendant format block if block nodes are not format // block. This is so we only have to look "up" the hierarchy to find // format nodes, instead of both up and down. for (int32_t i = arrayOfContents.Length() - 1; i >= 0; i--) { auto& content = arrayOfContents[i]; nsAutoString format; if (HTMLEditUtils::IsBlockElement(content) && !HTMLEditUtils::IsFormatNode(content)) { // XXX This RemoveObject() call has already been commented out and // the above comment explained we're trying to replace non-format // block nodes in the array. According to the following blocks and // `AppendDescendantFormatNodesAndFirstInlineNode()`, replacing // non-format block with descendants format blocks makes sense. // arrayOfContents.RemoveObject(node); ParagraphStateAtSelection::AppendDescendantFormatNodesAndFirstInlineNode( arrayOfContents, *content->AsElement()); } } // We might have an empty node list. if so, find selection parent // and put that on the list if (arrayOfContents.IsEmpty()) { const auto atCaret = aHTMLEditor.GetFirstSelectionStartPoint(); if (NS_WARN_IF(!atCaret.IsInContentNode())) { aRv.Throw(NS_ERROR_FAILURE); return; } arrayOfContents.AppendElement(*atCaret.ContainerAs()); } dom::Element* bodyOrDocumentElement = aHTMLEditor.GetRoot(); if (NS_WARN_IF(!bodyOrDocumentElement)) { aRv.Throw(NS_ERROR_FAILURE); return; } for (auto& content : Reversed(arrayOfContents)) { nsAtom* paragraphStateOfNode = nsGkAtoms::_empty; if (HTMLEditUtils::IsFormatNode(content)) { MOZ_ASSERT(content->NodeInfo()->NameAtom()); paragraphStateOfNode = content->NodeInfo()->NameAtom(); } // Ignore non-format block node since its children have been appended // the list above so that we'll handle this descendants later. else if (HTMLEditUtils::IsBlockElement(content)) { continue; } // If we meet an inline node, let's get its parent format. else { for (nsINode* parentNode = content->GetParentNode(); parentNode; parentNode = parentNode->GetParentNode()) { // If we reach `HTMLDocument.body` or `Document.documentElement`, // there is no format. if (parentNode == bodyOrDocumentElement) { break; } if (HTMLEditUtils::IsFormatNode(parentNode)) { MOZ_ASSERT(parentNode->NodeInfo()->NameAtom()); paragraphStateOfNode = parentNode->NodeInfo()->NameAtom(); break; } } } // if this is the first node, we've found, remember it as the format if (!mFirstParagraphState) { mFirstParagraphState = paragraphStateOfNode; continue; } // else make sure it matches previously found format if (mFirstParagraphState != paragraphStateOfNode) { mIsMixed = true; break; } } } // static void ParagraphStateAtSelection::AppendDescendantFormatNodesAndFirstInlineNode( nsTArray>& aArrayOfContents, dom::Element& aNonFormatBlockElement) { MOZ_ASSERT(HTMLEditUtils::IsBlockElement(aNonFormatBlockElement)); MOZ_ASSERT(!HTMLEditUtils::IsFormatNode(&aNonFormatBlockElement)); // We only need to place any one inline inside this node onto // the list. They are all the same for purposes of determining // paragraph style. We use foundInline to track this as we are // going through the children in the loop below. bool foundInline = false; for (nsIContent* childContent = aNonFormatBlockElement.GetFirstChild(); childContent; childContent = childContent->GetNextSibling()) { bool isBlock = HTMLEditUtils::IsBlockElement(*childContent); bool isFormat = HTMLEditUtils::IsFormatNode(childContent); // If the child is a non-format block element, let's check its children // recursively. if (isBlock && !isFormat) { ParagraphStateAtSelection::AppendDescendantFormatNodesAndFirstInlineNode( aArrayOfContents, *childContent->AsElement()); continue; } // If it's a format block, append it. if (isFormat) { aArrayOfContents.AppendElement(*childContent); continue; } MOZ_ASSERT(!isBlock); // If we haven't found inline node, append only this first inline node. // XXX I think that this makes sense if caller of this removes // aNonFormatBlockElement from aArrayOfContents because the last loop // of the constructor can check parent format block with // aNonFormatBlockElement. if (!foundInline) { foundInline = true; aArrayOfContents.AppendElement(*childContent); continue; } } } // static nsresult ParagraphStateAtSelection::CollectEditableFormatNodesInSelection( HTMLEditor& aHTMLEditor, const Element& aEditingHost, nsTArray>& aArrayOfContents) { { AutoRangeArray extendedSelectionRanges(aHTMLEditor.SelectionRef()); extendedSelectionRanges.ExtendRangesToWrapLinesToHandleBlockLevelEditAction( EditSubAction::eCreateOrRemoveBlock, aEditingHost); nsresult rv = extendedSelectionRanges.CollectEditTargetNodes( aHTMLEditor, aArrayOfContents, EditSubAction::eCreateOrRemoveBlock, AutoRangeArray::CollectNonEditableNodes::Yes); if (NS_FAILED(rv)) { NS_WARNING( "AutoRangeArray::CollectEditTargetNodes(EditSubAction::" "eCreateOrRemoveBlock, CollectNonEditableNodes::Yes) failed"); return rv; } } // Pre-process our list of nodes for (int32_t i = aArrayOfContents.Length() - 1; i >= 0; i--) { OwningNonNull content = aArrayOfContents[i]; // Remove all non-editable nodes. Leave them be. if (!EditorUtils::IsEditableContent(content, EditorType::HTML)) { aArrayOfContents.RemoveElementAt(i); continue; } // Scan for table elements. If we find table elements other than table, // replace it with a list of any editable non-table content. Ditto for // list elements. if (HTMLEditUtils::IsAnyTableElement(content) || HTMLEditUtils::IsAnyListElement(content) || HTMLEditUtils::IsListItem(content)) { aArrayOfContents.RemoveElementAt(i); HTMLEditUtils::CollectChildren( content, aArrayOfContents, i, {CollectChildrenOption::CollectListChildren, CollectChildrenOption::CollectTableChildren}); } } return NS_OK; } } // namespace mozilla