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31cdc09f52
When it's called, it just returns at the reached content node. However, this does not make sense when it reached a character in the text node. Depends on D207685 Differential Revision: https://phabricator.services.mozilla.com/D207686
2710 lines
106 KiB
C++
2710 lines
106 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "HTMLEditUtils.h"
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#include "AutoRangeArray.h" // for AutoRangeArray
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#include "CSSEditUtils.h" // for CSSEditUtils
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#include "EditAction.h" // for EditAction
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#include "EditorBase.h" // for EditorBase, EditorType
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#include "EditorDOMPoint.h" // for EditorDOMPoint, etc.
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#include "EditorForwards.h" // for CollectChildrenOptions
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#include "EditorUtils.h" // for EditorUtils
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#include "HTMLEditHelpers.h" // for EditorInlineStyle
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#include "WSRunObject.h" // for WSRunScanner
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#include "mozilla/ArrayUtils.h" // for ArrayLength
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#include "mozilla/Assertions.h" // for MOZ_ASSERT, etc.
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#include "mozilla/Attributes.h"
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#include "mozilla/StaticPrefs_editor.h" // for StaticPrefs::editor_
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#include "mozilla/RangeUtils.h" // for RangeUtils
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#include "mozilla/dom/DocumentInlines.h" // for GetBodyElement()
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#include "mozilla/dom/Element.h" // for Element, nsINode
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#include "mozilla/dom/HTMLAnchorElement.h"
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#include "mozilla/dom/HTMLBodyElement.h"
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#include "mozilla/dom/HTMLInputElement.h"
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#include "mozilla/ServoCSSParser.h" // for ServoCSSParser
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#include "mozilla/dom/StaticRange.h"
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#include "mozilla/dom/Text.h" // for Text
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#include "nsAString.h" // for nsAString::IsEmpty
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#include "nsAtom.h" // for nsAtom
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#include "nsAttrValue.h" // nsAttrValue
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#include "nsCaseTreatment.h"
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#include "nsCOMPtr.h" // for nsCOMPtr, operator==, etc.
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#include "nsComputedDOMStyle.h" // for nsComputedDOMStyle
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#include "nsDebug.h" // for NS_ASSERTION, etc.
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#include "nsElementTable.h" // for nsHTMLElement
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#include "nsError.h" // for NS_SUCCEEDED
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#include "nsGkAtoms.h" // for nsGkAtoms, nsGkAtoms::a, etc.
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#include "nsHTMLTags.h"
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#include "nsIFrameInlines.h" // for nsIFrame::IsFlexOrGridItem()
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#include "nsLiteralString.h" // for NS_LITERAL_STRING
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#include "nsNameSpaceManager.h" // for kNameSpaceID_None
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#include "nsPrintfCString.h" // nsPringfCString
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#include "nsString.h" // for nsAutoString
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#include "nsStyledElement.h"
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#include "nsStyleStruct.h" // for StyleDisplay
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#include "nsStyleUtil.h" // for nsStyleUtil
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#include "nsTextFragment.h" // for nsTextFragment
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#include "nsTextFrame.h" // for nsTextFrame
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namespace mozilla {
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using namespace dom;
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using EditorType = EditorBase::EditorType;
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template nsIContent* HTMLEditUtils::GetPreviousContent(
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const EditorDOMPoint& aPoint, const WalkTreeOptions& aOptions,
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BlockInlineCheck aBlockInlineCheck, const Element* aAncestorLimiter);
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template nsIContent* HTMLEditUtils::GetPreviousContent(
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const EditorRawDOMPoint& aPoint, const WalkTreeOptions& aOptions,
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BlockInlineCheck aBlockInlineCheck, const Element* aAncestorLimiter);
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template nsIContent* HTMLEditUtils::GetPreviousContent(
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const EditorDOMPointInText& aPoint, const WalkTreeOptions& aOptions,
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BlockInlineCheck aBlockInlineCheck, const Element* aAncestorLimiter);
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template nsIContent* HTMLEditUtils::GetPreviousContent(
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const EditorRawDOMPointInText& aPoint, const WalkTreeOptions& aOptions,
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BlockInlineCheck aBlockInlineCheck, const Element* aAncestorLimiter);
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template nsIContent* HTMLEditUtils::GetNextContent(
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const EditorDOMPoint& aPoint, const WalkTreeOptions& aOptions,
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BlockInlineCheck aBlockInlineCheck, const Element* aAncestorLimiter);
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template nsIContent* HTMLEditUtils::GetNextContent(
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const EditorRawDOMPoint& aPoint, const WalkTreeOptions& aOptions,
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BlockInlineCheck aBlockInlineCheck, const Element* aAncestorLimiter);
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template nsIContent* HTMLEditUtils::GetNextContent(
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const EditorDOMPointInText& aPoint, const WalkTreeOptions& aOptions,
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BlockInlineCheck aBlockInlineCheck, const Element* aAncestorLimiter);
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template nsIContent* HTMLEditUtils::GetNextContent(
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const EditorRawDOMPointInText& aPoint, const WalkTreeOptions& aOptions,
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BlockInlineCheck aBlockInlineCheck, const Element* aAncestorLimiter);
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template EditorDOMPoint HTMLEditUtils::GetPreviousEditablePoint(
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nsIContent& aContent, const Element* aAncestorLimiter,
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InvisibleWhiteSpaces aInvisibleWhiteSpaces,
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TableBoundary aHowToTreatTableBoundary);
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template EditorRawDOMPoint HTMLEditUtils::GetPreviousEditablePoint(
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nsIContent& aContent, const Element* aAncestorLimiter,
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InvisibleWhiteSpaces aInvisibleWhiteSpaces,
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TableBoundary aHowToTreatTableBoundary);
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template EditorDOMPoint HTMLEditUtils::GetNextEditablePoint(
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nsIContent& aContent, const Element* aAncestorLimiter,
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InvisibleWhiteSpaces aInvisibleWhiteSpaces,
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TableBoundary aHowToTreatTableBoundary);
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template EditorRawDOMPoint HTMLEditUtils::GetNextEditablePoint(
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nsIContent& aContent, const Element* aAncestorLimiter,
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InvisibleWhiteSpaces aInvisibleWhiteSpaces,
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TableBoundary aHowToTreatTableBoundary);
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template nsIContent* HTMLEditUtils::GetContentToPreserveInlineStyles(
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const EditorDOMPoint& aPoint, const Element& aEditingHost);
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template nsIContent* HTMLEditUtils::GetContentToPreserveInlineStyles(
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const EditorRawDOMPoint& aPoint, const Element& aEditingHost);
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template EditorDOMPoint HTMLEditUtils::GetBetterInsertionPointFor(
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const nsIContent& aContentToInsert, const EditorDOMPoint& aPointToInsert,
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const Element& aEditingHost);
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template EditorRawDOMPoint HTMLEditUtils::GetBetterInsertionPointFor(
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const nsIContent& aContentToInsert, const EditorRawDOMPoint& aPointToInsert,
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const Element& aEditingHost);
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template EditorDOMPoint HTMLEditUtils::GetBetterInsertionPointFor(
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const nsIContent& aContentToInsert, const EditorRawDOMPoint& aPointToInsert,
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const Element& aEditingHost);
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template EditorRawDOMPoint HTMLEditUtils::GetBetterInsertionPointFor(
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const nsIContent& aContentToInsert, const EditorDOMPoint& aPointToInsert,
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const Element& aEditingHost);
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template EditorDOMPoint HTMLEditUtils::GetBetterCaretPositionToInsertText(
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const EditorDOMPoint& aPoint, const Element& aEditingHost);
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template EditorDOMPoint HTMLEditUtils::GetBetterCaretPositionToInsertText(
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const EditorRawDOMPoint& aPoint, const Element& aEditingHost);
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template EditorRawDOMPoint HTMLEditUtils::GetBetterCaretPositionToInsertText(
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const EditorDOMPoint& aPoint, const Element& aEditingHost);
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template EditorRawDOMPoint HTMLEditUtils::GetBetterCaretPositionToInsertText(
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const EditorRawDOMPoint& aPoint, const Element& aEditingHost);
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template Result<EditorDOMPoint, nsresult>
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HTMLEditUtils::ComputePointToPutCaretInElementIfOutside(
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const Element& aElement, const EditorDOMPoint& aCurrentPoint);
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template Result<EditorRawDOMPoint, nsresult>
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HTMLEditUtils::ComputePointToPutCaretInElementIfOutside(
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const Element& aElement, const EditorDOMPoint& aCurrentPoint);
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template Result<EditorDOMPoint, nsresult>
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HTMLEditUtils::ComputePointToPutCaretInElementIfOutside(
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const Element& aElement, const EditorRawDOMPoint& aCurrentPoint);
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template Result<EditorRawDOMPoint, nsresult>
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HTMLEditUtils::ComputePointToPutCaretInElementIfOutside(
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const Element& aElement, const EditorRawDOMPoint& aCurrentPoint);
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template bool HTMLEditUtils::IsSameCSSColorValue(const nsAString& aColorA,
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const nsAString& aColorB);
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template bool HTMLEditUtils::IsSameCSSColorValue(const nsACString& aColorA,
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const nsACString& aColorB);
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bool HTMLEditUtils::CanContentsBeJoined(const nsIContent& aLeftContent,
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const nsIContent& aRightContent) {
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if (aLeftContent.NodeInfo()->NameAtom() !=
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aRightContent.NodeInfo()->NameAtom()) {
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return false;
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}
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if (!aLeftContent.IsElement()) {
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return true; // can join text nodes, etc
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}
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MOZ_ASSERT(aRightContent.IsElement());
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if (aLeftContent.NodeInfo()->NameAtom() == nsGkAtoms::font) {
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const nsAttrValue* const leftSize =
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aLeftContent.AsElement()->GetParsedAttr(nsGkAtoms::size);
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const nsAttrValue* const rightSize =
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aRightContent.AsElement()->GetParsedAttr(nsGkAtoms::size);
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if (!leftSize ^ !rightSize || (leftSize && !leftSize->Equals(*rightSize))) {
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return false;
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}
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const nsAttrValue* const leftColor =
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aLeftContent.AsElement()->GetParsedAttr(nsGkAtoms::color);
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const nsAttrValue* const rightColor =
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aRightContent.AsElement()->GetParsedAttr(nsGkAtoms::color);
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if (!leftColor ^ !rightColor ||
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(leftColor && !leftColor->Equals(*rightColor))) {
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return false;
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}
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const nsAttrValue* const leftFace =
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aLeftContent.AsElement()->GetParsedAttr(nsGkAtoms::face);
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const nsAttrValue* const rightFace =
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aRightContent.AsElement()->GetParsedAttr(nsGkAtoms::face);
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if (!leftFace ^ !rightFace || (leftFace && !leftFace->Equals(*rightFace))) {
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return false;
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}
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}
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nsStyledElement* leftStyledElement =
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nsStyledElement::FromNode(const_cast<nsIContent*>(&aLeftContent));
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if (!leftStyledElement) {
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return false;
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}
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nsStyledElement* rightStyledElement =
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nsStyledElement::FromNode(const_cast<nsIContent*>(&aRightContent));
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if (!rightStyledElement) {
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return false;
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}
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return CSSEditUtils::DoStyledElementsHaveSameStyle(*leftStyledElement,
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*rightStyledElement);
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}
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static bool IsHTMLBlockElementByDefault(const nsIContent& aContent) {
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if (!aContent.IsHTMLElement()) {
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return false;
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}
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if (aContent.IsHTMLElement(nsGkAtoms::br)) { // shortcut for TextEditor
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MOZ_ASSERT(!nsHTMLElement::IsBlock(
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nsHTMLTags::CaseSensitiveAtomTagToId(nsGkAtoms::br)));
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return false;
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}
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// We want to treat these as block nodes even though nsHTMLElement says
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// they're not.
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if (aContent.IsAnyOfHTMLElements(
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nsGkAtoms::body, nsGkAtoms::head, nsGkAtoms::tbody, nsGkAtoms::thead,
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nsGkAtoms::tfoot, nsGkAtoms::tr, nsGkAtoms::th, nsGkAtoms::td,
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nsGkAtoms::dt, nsGkAtoms::dd)) {
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return true;
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}
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return nsHTMLElement::IsBlock(
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nsHTMLTags::CaseSensitiveAtomTagToId(aContent.NodeInfo()->NameAtom()));
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}
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bool HTMLEditUtils::IsBlockElement(const nsIContent& aContent,
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BlockInlineCheck aBlockInlineCheck) {
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MOZ_ASSERT(aBlockInlineCheck != BlockInlineCheck::Unused);
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if (MOZ_UNLIKELY(!aContent.IsElement())) {
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return false;
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}
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// If it's a <br>, we should always treat it as an inline element because
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// its preceding collapse white-spaces and another <br> works same as usual
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// even if you set its style to `display:block`.
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if (aContent.IsHTMLElement(nsGkAtoms::br)) {
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return false;
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}
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if (!StaticPrefs::editor_block_inline_check_use_computed_style() ||
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aBlockInlineCheck == BlockInlineCheck::UseHTMLDefaultStyle) {
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return IsHTMLBlockElementByDefault(aContent);
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}
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// Let's treat the document element and the body element is a block to avoid
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// complicated things which may be detected by fuzzing.
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if (aContent.OwnerDoc()->GetDocumentElement() == &aContent ||
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(aContent.IsHTMLElement(nsGkAtoms::body) &&
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aContent.OwnerDoc()->GetBodyElement() == &aContent)) {
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return true;
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}
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RefPtr<const ComputedStyle> elementStyle =
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nsComputedDOMStyle::GetComputedStyleNoFlush(aContent.AsElement());
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if (MOZ_UNLIKELY(!elementStyle)) { // If aContent is not in the composed tree
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return IsHTMLBlockElementByDefault(aContent);
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}
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const nsStyleDisplay* styleDisplay = elementStyle->StyleDisplay();
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if (MOZ_UNLIKELY(styleDisplay->mDisplay == StyleDisplay::None)) {
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// Typically, we should not keep handling editing in invisible nodes, but if
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// we reach here, let's fallback to the default style for protecting the
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// structure as far as possible.
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return IsHTMLBlockElementByDefault(aContent);
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}
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// Both Blink and WebKit treat ruby style as a block, see IsEnclosingBlock()
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// in Chromium or isBlock() in WebKit.
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if (styleDisplay->IsRubyDisplayType()) {
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return true;
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}
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// If the outside is not inline, treat it as block.
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if (!styleDisplay->IsInlineOutsideStyle()) {
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return true;
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}
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// If we're checking display-inside, inline-block, etc should be a block too.
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return aBlockInlineCheck == BlockInlineCheck::UseComputedDisplayStyle &&
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styleDisplay->DisplayInside() == StyleDisplayInside::FlowRoot &&
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// Treat widgets as inline since they won't hide collapsible
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// white-spaces around them.
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styleDisplay->EffectiveAppearance() == StyleAppearance::None;
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}
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bool HTMLEditUtils::IsInlineContent(const nsIContent& aContent,
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BlockInlineCheck aBlockInlineCheck) {
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MOZ_ASSERT(aBlockInlineCheck != BlockInlineCheck::Unused);
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if (!aContent.IsElement()) {
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return true;
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}
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// If it's a <br>, we should always treat it as an inline element because
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// its preceding collapse white-spaces and another <br> works same as usual
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// even if you set its style to `display:block`.
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if (aContent.IsHTMLElement(nsGkAtoms::br)) {
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return true;
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}
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if (!StaticPrefs::editor_block_inline_check_use_computed_style() ||
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aBlockInlineCheck == BlockInlineCheck::UseHTMLDefaultStyle) {
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return !IsHTMLBlockElementByDefault(aContent);
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}
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// Let's treat the document element and the body element is a block to avoid
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// complicated things which may be detected by fuzzing.
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if (aContent.OwnerDoc()->GetDocumentElement() == &aContent ||
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(aContent.IsHTMLElement(nsGkAtoms::body) &&
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aContent.OwnerDoc()->GetBodyElement() == &aContent)) {
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return false;
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}
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RefPtr<const ComputedStyle> elementStyle =
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nsComputedDOMStyle::GetComputedStyleNoFlush(aContent.AsElement());
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if (MOZ_UNLIKELY(!elementStyle)) { // If aContent is not in the composed tree
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return !IsHTMLBlockElementByDefault(aContent);
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}
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const nsStyleDisplay* styleDisplay = elementStyle->StyleDisplay();
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if (MOZ_UNLIKELY(styleDisplay->mDisplay == StyleDisplay::None)) {
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// Similar to IsBlockElement, let's fallback to refer the default style.
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// Note that if you change here, you may need to check the parent element
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// style if aContent.
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return !IsHTMLBlockElementByDefault(aContent);
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}
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// Different block IsBlockElement, when the display-outside is inline, it's
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// simply an inline element.
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return styleDisplay->IsInlineOutsideStyle() ||
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styleDisplay->IsRubyDisplayType();
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}
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bool HTMLEditUtils::IsFlexOrGridItem(const Element& aElement) {
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nsIFrame* frame = aElement.GetPrimaryFrame();
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return frame && frame->IsFlexOrGridItem();
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}
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bool HTMLEditUtils::IsInclusiveAncestorCSSDisplayNone(
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const nsIContent& aContent) {
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if (NS_WARN_IF(!aContent.IsInComposedDoc())) {
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return true;
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}
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for (const Element* element :
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aContent.InclusiveFlatTreeAncestorsOfType<Element>()) {
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RefPtr<const ComputedStyle> elementStyle =
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nsComputedDOMStyle::GetComputedStyleNoFlush(element);
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if (NS_WARN_IF(!elementStyle)) {
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continue;
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}
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const nsStyleDisplay* styleDisplay = elementStyle->StyleDisplay();
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if (MOZ_UNLIKELY(styleDisplay->mDisplay == StyleDisplay::None)) {
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return true;
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}
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}
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return false;
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}
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bool HTMLEditUtils::IsVisibleElementEvenIfLeafNode(const nsIContent& aContent) {
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if (!aContent.IsElement()) {
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return false;
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}
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// Assume non-HTML element is visible.
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if (!aContent.IsHTMLElement()) {
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return true;
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}
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// XXX Should we return false if the element is display:none?
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if (HTMLEditUtils::IsBlockElement(
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aContent, BlockInlineCheck::UseComputedDisplayStyle)) {
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return true;
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}
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if (aContent.IsAnyOfHTMLElements(nsGkAtoms::applet, nsGkAtoms::iframe,
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nsGkAtoms::img, nsGkAtoms::meter,
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nsGkAtoms::progress, nsGkAtoms::select,
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nsGkAtoms::textarea)) {
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return true;
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}
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if (const HTMLInputElement* inputElement =
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HTMLInputElement::FromNode(&aContent)) {
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return inputElement->ControlType() != FormControlType::InputHidden;
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}
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// Maybe, empty inline element such as <span>.
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return false;
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}
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/**
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* IsInlineStyle() returns true if aNode is an inline style.
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*/
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bool HTMLEditUtils::IsInlineStyle(nsINode* aNode) {
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MOZ_ASSERT(aNode);
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return aNode->IsAnyOfHTMLElements(
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nsGkAtoms::b, nsGkAtoms::i, nsGkAtoms::u, nsGkAtoms::tt, nsGkAtoms::s,
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nsGkAtoms::strike, nsGkAtoms::big, nsGkAtoms::small, nsGkAtoms::sub,
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nsGkAtoms::sup, nsGkAtoms::font);
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}
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bool HTMLEditUtils::IsDisplayOutsideInline(const Element& aElement) {
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RefPtr<const ComputedStyle> elementStyle =
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nsComputedDOMStyle::GetComputedStyleNoFlush(&aElement);
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if (!elementStyle) {
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return false;
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}
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return elementStyle->StyleDisplay()->DisplayOutside() ==
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StyleDisplayOutside::Inline;
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}
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bool HTMLEditUtils::IsDisplayInsideFlowRoot(const Element& aElement) {
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RefPtr<const ComputedStyle> elementStyle =
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nsComputedDOMStyle::GetComputedStyleNoFlush(&aElement);
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if (!elementStyle) {
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return false;
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}
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return elementStyle->StyleDisplay()->DisplayInside() ==
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StyleDisplayInside::FlowRoot;
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}
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bool HTMLEditUtils::IsRemovableInlineStyleElement(Element& aElement) {
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if (!aElement.IsHTMLElement()) {
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return false;
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}
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// https://w3c.github.io/editing/execCommand.html#removeformat-candidate
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if (aElement.IsAnyOfHTMLElements(
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nsGkAtoms::abbr, // Chrome ignores, but does not make sense.
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nsGkAtoms::acronym, nsGkAtoms::b,
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nsGkAtoms::bdi, // Chrome ignores, but does not make sense.
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nsGkAtoms::bdo, nsGkAtoms::big, nsGkAtoms::cite, nsGkAtoms::code,
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// nsGkAtoms::del, Chrome ignores, but does not make sense but
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// execCommand unofficial draft excludes this. Spec issue:
|
|
// https://github.com/w3c/editing/issues/192
|
|
nsGkAtoms::dfn, nsGkAtoms::em, nsGkAtoms::font, nsGkAtoms::i,
|
|
nsGkAtoms::ins, nsGkAtoms::kbd,
|
|
nsGkAtoms::mark, // Chrome ignores, but does not make sense.
|
|
nsGkAtoms::nobr, nsGkAtoms::q, nsGkAtoms::s, nsGkAtoms::samp,
|
|
nsGkAtoms::small, nsGkAtoms::span, nsGkAtoms::strike,
|
|
nsGkAtoms::strong, nsGkAtoms::sub, nsGkAtoms::sup, nsGkAtoms::tt,
|
|
nsGkAtoms::u, nsGkAtoms::var)) {
|
|
return true;
|
|
}
|
|
// If it's a <blink> element, we can remove it.
|
|
nsAutoString tagName;
|
|
aElement.GetTagName(tagName);
|
|
return tagName.LowerCaseEqualsASCII("blink");
|
|
}
|
|
|
|
/**
|
|
* IsNodeThatCanOutdent() returns true if aNode is a list, list item or
|
|
* blockquote.
|
|
*/
|
|
bool HTMLEditUtils::IsNodeThatCanOutdent(nsINode* aNode) {
|
|
MOZ_ASSERT(aNode);
|
|
return aNode->IsAnyOfHTMLElements(nsGkAtoms::ul, nsGkAtoms::ol, nsGkAtoms::dl,
|
|
nsGkAtoms::li, nsGkAtoms::dd, nsGkAtoms::dt,
|
|
nsGkAtoms::blockquote);
|
|
}
|
|
|
|
/**
|
|
* IsHeader() returns true if aNode is an html header.
|
|
*/
|
|
bool HTMLEditUtils::IsHeader(nsINode& aNode) {
|
|
return aNode.IsAnyOfHTMLElements(nsGkAtoms::h1, nsGkAtoms::h2, nsGkAtoms::h3,
|
|
nsGkAtoms::h4, nsGkAtoms::h5, nsGkAtoms::h6);
|
|
}
|
|
|
|
/**
|
|
* IsListItem() returns true if aNode is an html list item.
|
|
*/
|
|
bool HTMLEditUtils::IsListItem(const nsINode* aNode) {
|
|
MOZ_ASSERT(aNode);
|
|
return aNode->IsAnyOfHTMLElements(nsGkAtoms::li, nsGkAtoms::dd,
|
|
nsGkAtoms::dt);
|
|
}
|
|
|
|
/**
|
|
* IsAnyTableElement() returns true if aNode is an html table, td, tr, ...
|
|
*/
|
|
bool HTMLEditUtils::IsAnyTableElement(const nsINode* aNode) {
|
|
MOZ_ASSERT(aNode);
|
|
return aNode->IsAnyOfHTMLElements(
|
|
nsGkAtoms::table, nsGkAtoms::tr, nsGkAtoms::td, nsGkAtoms::th,
|
|
nsGkAtoms::thead, nsGkAtoms::tfoot, nsGkAtoms::tbody, nsGkAtoms::caption);
|
|
}
|
|
|
|
/**
|
|
* IsAnyTableElementButNotTable() returns true if aNode is an html td, tr, ...
|
|
* (doesn't include table)
|
|
*/
|
|
bool HTMLEditUtils::IsAnyTableElementButNotTable(nsINode* aNode) {
|
|
MOZ_ASSERT(aNode);
|
|
return aNode->IsAnyOfHTMLElements(nsGkAtoms::tr, nsGkAtoms::td, nsGkAtoms::th,
|
|
nsGkAtoms::thead, nsGkAtoms::tfoot,
|
|
nsGkAtoms::tbody, nsGkAtoms::caption);
|
|
}
|
|
|
|
/**
|
|
* IsTable() returns true if aNode is an html table.
|
|
*/
|
|
bool HTMLEditUtils::IsTable(nsINode* aNode) {
|
|
return aNode && aNode->IsHTMLElement(nsGkAtoms::table);
|
|
}
|
|
|
|
/**
|
|
* IsTableRow() returns true if aNode is an html tr.
|
|
*/
|
|
bool HTMLEditUtils::IsTableRow(nsINode* aNode) {
|
|
return aNode && aNode->IsHTMLElement(nsGkAtoms::tr);
|
|
}
|
|
|
|
/**
|
|
* IsTableCell() returns true if aNode is an html td or th.
|
|
*/
|
|
bool HTMLEditUtils::IsTableCell(const nsINode* aNode) {
|
|
MOZ_ASSERT(aNode);
|
|
return aNode->IsAnyOfHTMLElements(nsGkAtoms::td, nsGkAtoms::th);
|
|
}
|
|
|
|
/**
|
|
* IsTableCellOrCaption() returns true if aNode is an html td or th or caption.
|
|
*/
|
|
bool HTMLEditUtils::IsTableCellOrCaption(nsINode& aNode) {
|
|
return aNode.IsAnyOfHTMLElements(nsGkAtoms::td, nsGkAtoms::th,
|
|
nsGkAtoms::caption);
|
|
}
|
|
|
|
/**
|
|
* IsAnyListElement() returns true if aNode is an html list.
|
|
*/
|
|
bool HTMLEditUtils::IsAnyListElement(const nsINode* aNode) {
|
|
MOZ_ASSERT(aNode);
|
|
return aNode->IsAnyOfHTMLElements(nsGkAtoms::ul, nsGkAtoms::ol,
|
|
nsGkAtoms::dl);
|
|
}
|
|
|
|
/**
|
|
* IsPre() returns true if aNode is an html pre node.
|
|
*/
|
|
bool HTMLEditUtils::IsPre(const nsINode* aNode) {
|
|
return aNode && aNode->IsHTMLElement(nsGkAtoms::pre);
|
|
}
|
|
|
|
/**
|
|
* IsImage() returns true if aNode is an html image node.
|
|
*/
|
|
bool HTMLEditUtils::IsImage(nsINode* aNode) {
|
|
return aNode && aNode->IsHTMLElement(nsGkAtoms::img);
|
|
}
|
|
|
|
bool HTMLEditUtils::IsLink(const nsINode* aNode) {
|
|
MOZ_ASSERT(aNode);
|
|
|
|
if (!aNode->IsContent()) {
|
|
return false;
|
|
}
|
|
|
|
RefPtr<const dom::HTMLAnchorElement> anchor =
|
|
dom::HTMLAnchorElement::FromNodeOrNull(aNode->AsContent());
|
|
if (!anchor) {
|
|
return false;
|
|
}
|
|
|
|
nsAutoCString tmpText;
|
|
anchor->GetHref(tmpText);
|
|
return !tmpText.IsEmpty();
|
|
}
|
|
|
|
bool HTMLEditUtils::IsNamedAnchor(const nsINode* aNode) {
|
|
MOZ_ASSERT(aNode);
|
|
if (!aNode->IsHTMLElement(nsGkAtoms::a)) {
|
|
return false;
|
|
}
|
|
|
|
nsAutoString text;
|
|
return aNode->AsElement()->GetAttr(nsGkAtoms::name, text) && !text.IsEmpty();
|
|
}
|
|
|
|
/**
|
|
* IsMozDiv() returns true if aNode is an html div node with |type = _moz|.
|
|
*/
|
|
bool HTMLEditUtils::IsMozDiv(nsINode* aNode) {
|
|
MOZ_ASSERT(aNode);
|
|
return aNode->IsHTMLElement(nsGkAtoms::div) &&
|
|
aNode->AsElement()->AttrValueIs(kNameSpaceID_None, nsGkAtoms::type,
|
|
u"_moz"_ns, eIgnoreCase);
|
|
}
|
|
|
|
/**
|
|
* IsMailCite() returns true if aNode is an html blockquote with |type=cite|.
|
|
*/
|
|
bool HTMLEditUtils::IsMailCite(const Element& aElement) {
|
|
// don't ask me why, but our html mailcites are id'd by "type=cite"...
|
|
if (aElement.AttrValueIs(kNameSpaceID_None, nsGkAtoms::type, u"cite"_ns,
|
|
eIgnoreCase)) {
|
|
return true;
|
|
}
|
|
|
|
// ... but our plaintext mailcites by "_moz_quote=true". go figure.
|
|
if (aElement.AttrValueIs(kNameSpaceID_None, nsGkAtoms::mozquote, u"true"_ns,
|
|
eIgnoreCase)) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* IsFormWidget() returns true if aNode is a form widget of some kind.
|
|
*/
|
|
bool HTMLEditUtils::IsFormWidget(const nsINode* aNode) {
|
|
MOZ_ASSERT(aNode);
|
|
return aNode->IsAnyOfHTMLElements(nsGkAtoms::textarea, nsGkAtoms::select,
|
|
nsGkAtoms::button, nsGkAtoms::output,
|
|
nsGkAtoms::progress, nsGkAtoms::meter,
|
|
nsGkAtoms::input);
|
|
}
|
|
|
|
bool HTMLEditUtils::SupportsAlignAttr(nsINode& aNode) {
|
|
return aNode.IsAnyOfHTMLElements(
|
|
nsGkAtoms::hr, nsGkAtoms::table, nsGkAtoms::tbody, nsGkAtoms::tfoot,
|
|
nsGkAtoms::thead, nsGkAtoms::tr, nsGkAtoms::td, nsGkAtoms::th,
|
|
nsGkAtoms::div, nsGkAtoms::p, nsGkAtoms::h1, nsGkAtoms::h2, nsGkAtoms::h3,
|
|
nsGkAtoms::h4, nsGkAtoms::h5, nsGkAtoms::h6);
|
|
}
|
|
|
|
bool HTMLEditUtils::IsVisibleTextNode(const Text& aText) {
|
|
if (!aText.TextDataLength()) {
|
|
return false;
|
|
}
|
|
|
|
Maybe<uint32_t> visibleCharOffset =
|
|
HTMLEditUtils::GetInclusiveNextNonCollapsibleCharOffset(
|
|
EditorDOMPointInText(&aText, 0));
|
|
if (visibleCharOffset.isSome()) {
|
|
return true;
|
|
}
|
|
|
|
// Now, all characters in aText is collapsible white-spaces. The node is
|
|
// invisible if next to block boundary.
|
|
return !HTMLEditUtils::GetElementOfImmediateBlockBoundary(
|
|
aText, WalkTreeDirection::Forward) &&
|
|
!HTMLEditUtils::GetElementOfImmediateBlockBoundary(
|
|
aText, WalkTreeDirection::Backward);
|
|
}
|
|
|
|
bool HTMLEditUtils::IsInVisibleTextFrames(nsPresContext* aPresContext,
|
|
const Text& aText) {
|
|
// TODO(dholbert): aPresContext is now unused; maybe we can remove it, here
|
|
// and in IsEmptyNode? We do use it as a signal (implicitly here,
|
|
// more-explicitly in IsEmptyNode) that we are in a "SafeToAskLayout" case...
|
|
// If/when we remove it, we should be sure we're not losing that signal of
|
|
// strictness, since this function here does absolutely need to query layout.
|
|
MOZ_ASSERT(aPresContext);
|
|
|
|
if (!aText.TextDataLength()) {
|
|
return false;
|
|
}
|
|
|
|
nsTextFrame* textFrame = do_QueryFrame(aText.GetPrimaryFrame());
|
|
if (!textFrame) {
|
|
return false;
|
|
}
|
|
|
|
return textFrame->HasVisibleText();
|
|
}
|
|
|
|
Element* HTMLEditUtils::GetElementOfImmediateBlockBoundary(
|
|
const nsIContent& aContent, const WalkTreeDirection aDirection) {
|
|
MOZ_ASSERT(aContent.IsHTMLElement(nsGkAtoms::br) || aContent.IsText());
|
|
|
|
// First, we get a block container. This is not designed for reaching
|
|
// no block boundaries in the tree.
|
|
Element* maybeNonEditableAncestorBlock = HTMLEditUtils::GetAncestorElement(
|
|
aContent, HTMLEditUtils::ClosestBlockElement,
|
|
BlockInlineCheck::UseComputedDisplayStyle);
|
|
if (NS_WARN_IF(!maybeNonEditableAncestorBlock)) {
|
|
return nullptr;
|
|
}
|
|
|
|
auto getNextContent = [&aDirection, &maybeNonEditableAncestorBlock](
|
|
const nsIContent& aContent) -> nsIContent* {
|
|
return aDirection == WalkTreeDirection::Forward
|
|
? HTMLEditUtils::GetNextContent(
|
|
aContent,
|
|
{WalkTreeOption::IgnoreDataNodeExceptText,
|
|
WalkTreeOption::StopAtBlockBoundary},
|
|
BlockInlineCheck::UseComputedDisplayStyle,
|
|
maybeNonEditableAncestorBlock)
|
|
: HTMLEditUtils::GetPreviousContent(
|
|
aContent,
|
|
{WalkTreeOption::IgnoreDataNodeExceptText,
|
|
WalkTreeOption::StopAtBlockBoundary},
|
|
BlockInlineCheck::UseComputedDisplayStyle,
|
|
maybeNonEditableAncestorBlock);
|
|
};
|
|
|
|
// Then, scan block element boundary while we don't see visible things.
|
|
const bool isBRElement = aContent.IsHTMLElement(nsGkAtoms::br);
|
|
for (nsIContent* nextContent = getNextContent(aContent); nextContent;
|
|
nextContent = getNextContent(*nextContent)) {
|
|
if (nextContent->IsElement()) {
|
|
// Break is right before a child block, it's not visible
|
|
if (HTMLEditUtils::IsBlockElement(
|
|
*nextContent, BlockInlineCheck::UseComputedDisplayStyle)) {
|
|
return nextContent->AsElement();
|
|
}
|
|
|
|
// XXX How about other non-HTML elements? Assume they are styled as
|
|
// blocks for now.
|
|
if (!nextContent->IsHTMLElement()) {
|
|
return nextContent->AsElement();
|
|
}
|
|
|
|
// If there is a visible content which generates something visible,
|
|
// stop scanning.
|
|
if (HTMLEditUtils::IsVisibleElementEvenIfLeafNode(*nextContent)) {
|
|
return nullptr;
|
|
}
|
|
|
|
if (nextContent->IsHTMLElement(nsGkAtoms::br)) {
|
|
// If aContent is a <br> element, another <br> element prevents the
|
|
// block boundary special handling.
|
|
if (isBRElement) {
|
|
return nullptr;
|
|
}
|
|
|
|
MOZ_ASSERT(aContent.IsText());
|
|
// Following <br> element always hides its following block boundary.
|
|
// I.e., white-spaces is at end of the text node is visible.
|
|
if (aDirection == WalkTreeDirection::Forward) {
|
|
return nullptr;
|
|
}
|
|
// Otherwise, if text node follows <br> element, its white-spaces at
|
|
// start of the text node are invisible. In this case, we return
|
|
// the found <br> element.
|
|
return nextContent->AsElement();
|
|
}
|
|
|
|
continue;
|
|
}
|
|
|
|
switch (nextContent->NodeType()) {
|
|
case nsINode::TEXT_NODE:
|
|
case nsINode::CDATA_SECTION_NODE:
|
|
break;
|
|
default:
|
|
continue;
|
|
}
|
|
|
|
Text* textNode = Text::FromNode(nextContent);
|
|
MOZ_ASSERT(textNode);
|
|
if (!textNode->TextLength()) {
|
|
continue; // empty invisible text node, keep scanning next one.
|
|
}
|
|
if (HTMLEditUtils::IsInclusiveAncestorCSSDisplayNone(*textNode)) {
|
|
continue; // Styled as invisible.
|
|
}
|
|
if (!textNode->TextIsOnlyWhitespace()) {
|
|
return nullptr; // found a visible text node.
|
|
}
|
|
const nsTextFragment& textFragment = textNode->TextFragment();
|
|
const bool isWhiteSpacePreformatted =
|
|
EditorUtils::IsWhiteSpacePreformatted(*textNode);
|
|
const bool isNewLinePreformatted =
|
|
EditorUtils::IsNewLinePreformatted(*textNode);
|
|
if (!isWhiteSpacePreformatted && !isNewLinePreformatted) {
|
|
// if the white-space only text node is not preformatted, ignore it.
|
|
continue;
|
|
}
|
|
for (uint32_t i = 0; i < textFragment.GetLength(); i++) {
|
|
if (textFragment.CharAt(i) == HTMLEditUtils::kNewLine) {
|
|
if (isNewLinePreformatted) {
|
|
return nullptr; // found a visible text node.
|
|
}
|
|
continue;
|
|
}
|
|
if (isWhiteSpacePreformatted) {
|
|
return nullptr; // found a visible text node.
|
|
}
|
|
}
|
|
// All white-spaces in the text node is invisible, keep scanning next one.
|
|
}
|
|
|
|
// There is no visible content and reached current block boundary. Then,
|
|
// the <br> element is the last content in the block and invisible.
|
|
// XXX Should we treat it visible if it's the only child of a block?
|
|
return maybeNonEditableAncestorBlock;
|
|
}
|
|
|
|
nsIContent* HTMLEditUtils::GetUnnecessaryLineBreakContent(
|
|
const Element& aBlockElement, ScanLineBreak aScanLineBreak) {
|
|
auto* lastLineBreakContent = [&]() -> nsIContent* {
|
|
const LeafNodeTypes leafNodeOrNonEditableNode{
|
|
LeafNodeType::LeafNodeOrNonEditableNode};
|
|
const WalkTreeOptions onlyPrecedingLine{
|
|
WalkTreeOption::StopAtBlockBoundary};
|
|
for (nsIContent* content =
|
|
aScanLineBreak == ScanLineBreak::AtEndOfBlock
|
|
? HTMLEditUtils::GetLastLeafContent(aBlockElement,
|
|
leafNodeOrNonEditableNode)
|
|
: HTMLEditUtils::GetPreviousContent(
|
|
aBlockElement, onlyPrecedingLine,
|
|
BlockInlineCheck::UseComputedDisplayStyle,
|
|
aBlockElement.GetParentElement());
|
|
content;
|
|
content =
|
|
aScanLineBreak == ScanLineBreak::AtEndOfBlock
|
|
? HTMLEditUtils::GetPreviousLeafContentOrPreviousBlockElement(
|
|
*content, aBlockElement, leafNodeOrNonEditableNode,
|
|
BlockInlineCheck::UseComputedDisplayStyle)
|
|
: HTMLEditUtils::GetPreviousContent(
|
|
*content, onlyPrecedingLine,
|
|
BlockInlineCheck::UseComputedDisplayStyle,
|
|
aBlockElement.GetParentElement())) {
|
|
// If we're scanning preceding <br> element of aBlockElement, we don't
|
|
// need to look for a line break in another block because the caller
|
|
// needs to handle only preceding <br> element of aBlockElement.
|
|
if (aScanLineBreak == ScanLineBreak::BeforeBlock &&
|
|
HTMLEditUtils::IsBlockElement(
|
|
*content, BlockInlineCheck::UseComputedDisplayStyle)) {
|
|
return nullptr;
|
|
}
|
|
if (Text* textNode = Text::FromNode(content)) {
|
|
if (!textNode->TextLength()) {
|
|
continue; // ignore empty text node
|
|
}
|
|
const nsTextFragment& textFragment = textNode->TextFragment();
|
|
if (EditorUtils::IsNewLinePreformatted(*textNode) &&
|
|
textFragment.CharAt(textFragment.GetLength() - 1u) ==
|
|
HTMLEditUtils::kNewLine) {
|
|
// If the text node ends with a preserved line break, it's unnecessary
|
|
// unless it follows another preformatted line break.
|
|
if (textFragment.GetLength() == 1u) {
|
|
return textNode; // Need to scan previous leaf.
|
|
}
|
|
return textFragment.CharAt(textFragment.GetLength() - 2u) ==
|
|
HTMLEditUtils::kNewLine
|
|
? nullptr
|
|
: textNode;
|
|
}
|
|
if (HTMLEditUtils::IsVisibleTextNode(*textNode)) {
|
|
return nullptr;
|
|
}
|
|
continue;
|
|
}
|
|
if (content->IsCharacterData()) {
|
|
continue; // ignore hidden character data nodes like comment
|
|
}
|
|
if (content->IsHTMLElement(nsGkAtoms::br)) {
|
|
return content;
|
|
}
|
|
// If found element is empty block or visible element, there is no
|
|
// unnecessary line break.
|
|
if (HTMLEditUtils::IsVisibleElementEvenIfLeafNode(*content)) {
|
|
return nullptr;
|
|
}
|
|
// Otherwise, e.g., empty <b>, we should keep scanning.
|
|
}
|
|
return nullptr;
|
|
}();
|
|
if (!lastLineBreakContent) {
|
|
return nullptr;
|
|
}
|
|
|
|
// If the found node is a text node and contains only one preformatted new
|
|
// line break, we need to keep scanning previous one, but if it has 2 or more
|
|
// characters, we know it has redundant line break.
|
|
Text* lastLineBreakText = Text::FromNode(lastLineBreakContent);
|
|
if (lastLineBreakText && lastLineBreakText->TextDataLength() != 1u) {
|
|
return lastLineBreakText;
|
|
}
|
|
|
|
// Scan previous leaf content, but now, we can stop at child block boundary.
|
|
const LeafNodeTypes leafNodeOrNonEditableNodeOrChildBlock{
|
|
LeafNodeType::LeafNodeOrNonEditableNode,
|
|
LeafNodeType::LeafNodeOrChildBlock};
|
|
const Element* blockElement = HTMLEditUtils::GetAncestorElement(
|
|
*lastLineBreakContent, HTMLEditUtils::ClosestBlockElement,
|
|
BlockInlineCheck::UseComputedDisplayStyle);
|
|
for (nsIContent* content =
|
|
HTMLEditUtils::GetPreviousLeafContentOrPreviousBlockElement(
|
|
*lastLineBreakContent, *blockElement,
|
|
leafNodeOrNonEditableNodeOrChildBlock,
|
|
BlockInlineCheck::UseComputedDisplayStyle);
|
|
content;
|
|
content = HTMLEditUtils::GetPreviousLeafContentOrPreviousBlockElement(
|
|
*content, *blockElement, leafNodeOrNonEditableNodeOrChildBlock,
|
|
BlockInlineCheck::UseComputedDisplayStyle)) {
|
|
if (HTMLEditUtils::IsBlockElement(
|
|
*content, BlockInlineCheck::UseComputedDisplayStyle) ||
|
|
(content->IsElement() && !content->IsHTMLElement())) {
|
|
// Now, must found <div>...<div>...</div><br></div>
|
|
// ^^^^
|
|
// In this case, the <br> element is necessary to make a following empty
|
|
// line of the inner <div> visible.
|
|
return nullptr;
|
|
}
|
|
if (Text* textNode = Text::FromNode(content)) {
|
|
if (!textNode->TextLength()) {
|
|
continue; // ignore empty text node
|
|
}
|
|
const nsTextFragment& textFragment = textNode->TextFragment();
|
|
if (EditorUtils::IsNewLinePreformatted(*textNode) &&
|
|
textFragment.CharAt(textFragment.GetLength() - 1u) ==
|
|
HTMLEditUtils::kNewLine) {
|
|
// So, we are here because the preformatted line break is followed by
|
|
// lastLineBreakContent which is <br> or a text node containing only
|
|
// one. In this case, even if their parents are different,
|
|
// lastLineBreakContent is necessary to make the last line visible.
|
|
return nullptr;
|
|
}
|
|
if (!HTMLEditUtils::IsVisibleTextNode(*textNode)) {
|
|
continue;
|
|
}
|
|
if (EditorUtils::IsWhiteSpacePreformatted(*textNode)) {
|
|
// If the white-space is preserved, neither following <br> nor a
|
|
// preformatted line break is not necessary.
|
|
return lastLineBreakContent;
|
|
}
|
|
// Otherwise, only if the last character is a collapsible white-space,
|
|
// we need lastLineBreakContent to make the trailing white-space visible.
|
|
switch (textFragment.CharAt(textFragment.GetLength() - 1u)) {
|
|
case HTMLEditUtils::kSpace:
|
|
case HTMLEditUtils::kCarriageReturn:
|
|
case HTMLEditUtils::kTab:
|
|
case HTMLEditUtils::kNBSP:
|
|
return nullptr;
|
|
default:
|
|
return lastLineBreakContent;
|
|
}
|
|
}
|
|
if (content->IsCharacterData()) {
|
|
continue; // ignore hidden character data nodes like comment
|
|
}
|
|
// If lastLineBreakContent follows a <br> element in same block, it's
|
|
// necessary to make the empty last line visible.
|
|
if (content->IsHTMLElement(nsGkAtoms::br)) {
|
|
return nullptr;
|
|
}
|
|
// If it follows a visible element, it's unnecessary line break.
|
|
if (HTMLEditUtils::IsVisibleElementEvenIfLeafNode(*content)) {
|
|
return lastLineBreakContent;
|
|
}
|
|
// Otherwise, ignore empty inline elements such as <b>.
|
|
}
|
|
// If the block is empty except invisible data nodes and lastLineBreakContent,
|
|
// lastLineBreakContent is necessary to make the block visible.
|
|
return nullptr;
|
|
}
|
|
|
|
bool HTMLEditUtils::IsEmptyNode(nsPresContext* aPresContext,
|
|
const nsINode& aNode,
|
|
const EmptyCheckOptions& aOptions /* = {} */,
|
|
bool* aSeenBR /* = nullptr */) {
|
|
MOZ_ASSERT_IF(aOptions.contains(EmptyCheckOption::SafeToAskLayout),
|
|
aPresContext);
|
|
|
|
if (aSeenBR) {
|
|
*aSeenBR = false;
|
|
}
|
|
|
|
if (const Text* text = Text::FromNode(&aNode)) {
|
|
return aOptions.contains(EmptyCheckOption::SafeToAskLayout)
|
|
? !IsInVisibleTextFrames(aPresContext, *text)
|
|
: !IsVisibleTextNode(*text);
|
|
}
|
|
|
|
if (!aNode.IsElement()) {
|
|
return false;
|
|
}
|
|
|
|
if (
|
|
// If it's not a container such as an <hr> or <br>, etc, it should be
|
|
// treated as not empty.
|
|
!IsContainerNode(*aNode.AsContent()) ||
|
|
// If it's a named anchor, we shouldn't treat it as empty because it
|
|
// has special meaning even if invisible.
|
|
IsNamedAnchor(&aNode) ||
|
|
// Form widgets should be treated as not empty because they have special
|
|
// meaning even if invisible.
|
|
IsFormWidget(&aNode)) {
|
|
return false;
|
|
}
|
|
|
|
const auto [isListItem, isTableCell, hasAppearance] =
|
|
[&]() MOZ_NEVER_INLINE_DEBUG -> std::tuple<bool, bool, bool> {
|
|
if (!StaticPrefs::editor_block_inline_check_use_computed_style()) {
|
|
return {IsListItem(&aNode), IsTableCell(&aNode), false};
|
|
}
|
|
// Let's stop treating the document element and the <body> as a list item
|
|
// nor a table cell to avoid tricky cases.
|
|
if (aNode.OwnerDoc()->GetDocumentElement() == &aNode ||
|
|
(aNode.IsHTMLElement(nsGkAtoms::body) &&
|
|
aNode.OwnerDoc()->GetBodyElement() == &aNode)) {
|
|
return {false, false, false};
|
|
}
|
|
|
|
RefPtr<const ComputedStyle> elementStyle =
|
|
nsComputedDOMStyle::GetComputedStyleNoFlush(aNode.AsElement());
|
|
// If there is no style information like in a document fragment, let's refer
|
|
// the default style.
|
|
if (MOZ_UNLIKELY(!elementStyle)) {
|
|
return {IsListItem(&aNode), IsTableCell(&aNode), false};
|
|
}
|
|
const nsStyleDisplay* styleDisplay = elementStyle->StyleDisplay();
|
|
if (NS_WARN_IF(!styleDisplay)) {
|
|
return {IsListItem(&aNode), IsTableCell(&aNode), false};
|
|
}
|
|
if (styleDisplay->mDisplay != StyleDisplay::None &&
|
|
styleDisplay->HasAppearance()) {
|
|
return {false, false, true};
|
|
}
|
|
if (styleDisplay->IsListItem()) {
|
|
return {true, false, false};
|
|
}
|
|
if (styleDisplay->mDisplay == StyleDisplay::TableCell) {
|
|
return {false, true, false};
|
|
}
|
|
// The default display of <dt> and <dd> is block. Therefore, we need
|
|
// special handling for them.
|
|
return {styleDisplay->mDisplay == StyleDisplay::Block &&
|
|
aNode.IsAnyOfHTMLElements(nsGkAtoms::dd, nsGkAtoms::dt),
|
|
false, false};
|
|
}();
|
|
|
|
// The web author created native widget without form control elements. Let's
|
|
// treat it as visible.
|
|
if (hasAppearance) {
|
|
return false;
|
|
}
|
|
|
|
if (isListItem &&
|
|
aOptions.contains(EmptyCheckOption::TreatListItemAsVisible)) {
|
|
return false;
|
|
}
|
|
if (isTableCell &&
|
|
aOptions.contains(EmptyCheckOption::TreatTableCellAsVisible)) {
|
|
return false;
|
|
}
|
|
|
|
bool seenBR = aSeenBR && *aSeenBR;
|
|
for (nsIContent* childContent = aNode.GetFirstChild(); childContent;
|
|
childContent = childContent->GetNextSibling()) {
|
|
// Is the child editable and non-empty? if so, return false
|
|
if (aOptions.contains(
|
|
EmptyCheckOption::TreatNonEditableContentAsInvisible) &&
|
|
!EditorUtils::IsEditableContent(*childContent, EditorType::HTML)) {
|
|
continue;
|
|
}
|
|
|
|
if (Text* text = Text::FromNode(childContent)) {
|
|
// break out if we find we aren't empty
|
|
if (aOptions.contains(EmptyCheckOption::SafeToAskLayout)
|
|
? IsInVisibleTextFrames(aPresContext, *text)
|
|
: IsVisibleTextNode(*text)) {
|
|
return false;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
MOZ_ASSERT(childContent != &aNode);
|
|
|
|
if (!aOptions.contains(EmptyCheckOption::TreatSingleBRElementAsVisible) &&
|
|
!seenBR && childContent->IsHTMLElement(nsGkAtoms::br)) {
|
|
// Ignore first <br> element in it if caller wants so because it's
|
|
// typically a padding <br> element of for a parent block.
|
|
seenBR = true;
|
|
if (aSeenBR) {
|
|
*aSeenBR = true;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
// Note: list items or table cells are not considered empty
|
|
// if they contain other lists or tables
|
|
EmptyCheckOptions options(aOptions);
|
|
if (childContent->IsElement() && (isListItem || isTableCell)) {
|
|
options += {EmptyCheckOption::TreatListItemAsVisible,
|
|
EmptyCheckOption::TreatTableCellAsVisible};
|
|
}
|
|
if (!IsEmptyNode(aPresContext, *childContent, options, &seenBR)) {
|
|
if (aSeenBR) {
|
|
*aSeenBR = seenBR;
|
|
}
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (aSeenBR) {
|
|
*aSeenBR = seenBR;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool HTMLEditUtils::ShouldInsertLinefeedCharacter(
|
|
const EditorDOMPoint& aPointToInsert, const Element& aEditingHost) {
|
|
MOZ_ASSERT(aPointToInsert.IsSetAndValid());
|
|
|
|
if (!aPointToInsert.IsInContentNode()) {
|
|
return false;
|
|
}
|
|
|
|
// closestEditableBlockElement can be nullptr if aEditingHost is an inline
|
|
// element.
|
|
Element* closestEditableBlockElement =
|
|
HTMLEditUtils::GetInclusiveAncestorElement(
|
|
*aPointToInsert.ContainerAs<nsIContent>(),
|
|
HTMLEditUtils::ClosestEditableBlockElement,
|
|
BlockInlineCheck::UseComputedDisplayOutsideStyle);
|
|
|
|
// If and only if the nearest block is the editing host or its parent,
|
|
// and new line character is preformatted, we should insert a linefeed.
|
|
return (!closestEditableBlockElement ||
|
|
closestEditableBlockElement == &aEditingHost) &&
|
|
EditorUtils::IsNewLinePreformatted(
|
|
*aPointToInsert.ContainerAs<nsIContent>());
|
|
}
|
|
|
|
// We use bitmasks to test containment of elements. Elements are marked to be
|
|
// in certain groups by setting the mGroup member of the `ElementInfo` struct
|
|
// to the corresponding GROUP_ values (OR'ed together). Similarly, elements are
|
|
// marked to allow containment of certain groups by setting the
|
|
// mCanContainGroups member of the `ElementInfo` struct to the corresponding
|
|
// GROUP_ values (OR'ed together).
|
|
// Testing containment then simply consists of checking whether the
|
|
// mCanContainGroups bitmask of an element and the mGroup bitmask of a
|
|
// potential child overlap.
|
|
|
|
#define GROUP_NONE 0
|
|
|
|
// body, head, html
|
|
#define GROUP_TOPLEVEL (1 << 1)
|
|
|
|
// base, link, meta, script, style, title
|
|
#define GROUP_HEAD_CONTENT (1 << 2)
|
|
|
|
// b, big, i, s, small, strike, tt, u
|
|
#define GROUP_FONTSTYLE (1 << 3)
|
|
|
|
// abbr, acronym, cite, code, datalist, del, dfn, em, ins, kbd, mark, rb, rp
|
|
// rt, rtc, ruby, samp, strong, var
|
|
#define GROUP_PHRASE (1 << 4)
|
|
|
|
// a, applet, basefont, bdi, bdo, br, font, iframe, img, map, meter, object,
|
|
// output, picture, progress, q, script, span, sub, sup
|
|
#define GROUP_SPECIAL (1 << 5)
|
|
|
|
// button, form, input, label, select, textarea
|
|
#define GROUP_FORMCONTROL (1 << 6)
|
|
|
|
// address, applet, article, aside, blockquote, button, center, del, details,
|
|
// dialog, dir, div, dl, fieldset, figure, footer, form, h1, h2, h3, h4, h5,
|
|
// h6, header, hgroup, hr, iframe, ins, main, map, menu, nav, noframes,
|
|
// noscript, object, ol, p, pre, table, search, section, summary, ul
|
|
#define GROUP_BLOCK (1 << 7)
|
|
|
|
// frame, frameset
|
|
#define GROUP_FRAME (1 << 8)
|
|
|
|
// col, tbody
|
|
#define GROUP_TABLE_CONTENT (1 << 9)
|
|
|
|
// tr
|
|
#define GROUP_TBODY_CONTENT (1 << 10)
|
|
|
|
// td, th
|
|
#define GROUP_TR_CONTENT (1 << 11)
|
|
|
|
// col
|
|
#define GROUP_COLGROUP_CONTENT (1 << 12)
|
|
|
|
// param
|
|
#define GROUP_OBJECT_CONTENT (1 << 13)
|
|
|
|
// li
|
|
#define GROUP_LI (1 << 14)
|
|
|
|
// area
|
|
#define GROUP_MAP_CONTENT (1 << 15)
|
|
|
|
// optgroup, option
|
|
#define GROUP_SELECT_CONTENT (1 << 16)
|
|
|
|
// option
|
|
#define GROUP_OPTIONS (1 << 17)
|
|
|
|
// dd, dt
|
|
#define GROUP_DL_CONTENT (1 << 18)
|
|
|
|
// p
|
|
#define GROUP_P (1 << 19)
|
|
|
|
// text, white-space, newline, comment
|
|
#define GROUP_LEAF (1 << 20)
|
|
|
|
// XXX This is because the editor does sublists illegally.
|
|
// ol, ul
|
|
#define GROUP_OL_UL (1 << 21)
|
|
|
|
// h1, h2, h3, h4, h5, h6
|
|
#define GROUP_HEADING (1 << 22)
|
|
|
|
// figcaption
|
|
#define GROUP_FIGCAPTION (1 << 23)
|
|
|
|
// picture members (img, source)
|
|
#define GROUP_PICTURE_CONTENT (1 << 24)
|
|
|
|
#define GROUP_INLINE_ELEMENT \
|
|
(GROUP_FONTSTYLE | GROUP_PHRASE | GROUP_SPECIAL | GROUP_FORMCONTROL | \
|
|
GROUP_LEAF)
|
|
|
|
#define GROUP_FLOW_ELEMENT (GROUP_INLINE_ELEMENT | GROUP_BLOCK)
|
|
|
|
struct ElementInfo final {
|
|
#ifdef DEBUG
|
|
nsHTMLTag mTag;
|
|
#endif
|
|
// See `GROUP_NONE`'s comment.
|
|
uint32_t mGroup;
|
|
// See `GROUP_NONE`'s comment.
|
|
uint32_t mCanContainGroups;
|
|
bool mIsContainer;
|
|
bool mCanContainSelf;
|
|
};
|
|
|
|
#ifdef DEBUG
|
|
# define ELEM(_tag, _isContainer, _canContainSelf, _group, _canContainGroups) \
|
|
{ \
|
|
eHTMLTag_##_tag, _group, _canContainGroups, _isContainer, \
|
|
_canContainSelf \
|
|
}
|
|
#else
|
|
# define ELEM(_tag, _isContainer, _canContainSelf, _group, _canContainGroups) \
|
|
{ _group, _canContainGroups, _isContainer, _canContainSelf }
|
|
#endif
|
|
|
|
static const ElementInfo kElements[eHTMLTag_userdefined] = {
|
|
ELEM(a, true, false, GROUP_SPECIAL, GROUP_INLINE_ELEMENT),
|
|
ELEM(abbr, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
|
|
ELEM(acronym, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
|
|
ELEM(address, true, true, GROUP_BLOCK, GROUP_INLINE_ELEMENT | GROUP_P),
|
|
// While applet is no longer a valid tag, removing it here breaks the editor
|
|
// (compiles, but causes many tests to fail in odd ways). This list is
|
|
// tracked against the main HTML Tag list, so any changes will require more
|
|
// than just removing entries.
|
|
ELEM(applet, true, true, GROUP_SPECIAL | GROUP_BLOCK,
|
|
GROUP_FLOW_ELEMENT | GROUP_OBJECT_CONTENT),
|
|
ELEM(area, false, false, GROUP_MAP_CONTENT, GROUP_NONE),
|
|
ELEM(article, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
|
|
ELEM(aside, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
|
|
ELEM(audio, false, false, GROUP_NONE, GROUP_NONE),
|
|
ELEM(b, true, true, GROUP_FONTSTYLE, GROUP_INLINE_ELEMENT),
|
|
ELEM(base, false, false, GROUP_HEAD_CONTENT, GROUP_NONE),
|
|
ELEM(basefont, false, false, GROUP_SPECIAL, GROUP_NONE),
|
|
ELEM(bdi, true, true, GROUP_SPECIAL, GROUP_INLINE_ELEMENT),
|
|
ELEM(bdo, true, true, GROUP_SPECIAL, GROUP_INLINE_ELEMENT),
|
|
ELEM(bgsound, false, false, GROUP_NONE, GROUP_NONE),
|
|
ELEM(big, true, true, GROUP_FONTSTYLE, GROUP_INLINE_ELEMENT),
|
|
ELEM(blockquote, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
|
|
ELEM(body, true, true, GROUP_TOPLEVEL, GROUP_FLOW_ELEMENT),
|
|
ELEM(br, false, false, GROUP_SPECIAL, GROUP_NONE),
|
|
ELEM(button, true, true, GROUP_FORMCONTROL | GROUP_BLOCK,
|
|
GROUP_FLOW_ELEMENT),
|
|
ELEM(canvas, false, false, GROUP_NONE, GROUP_NONE),
|
|
ELEM(caption, true, true, GROUP_NONE, GROUP_INLINE_ELEMENT),
|
|
ELEM(center, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
|
|
ELEM(cite, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
|
|
ELEM(code, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
|
|
ELEM(col, false, false, GROUP_TABLE_CONTENT | GROUP_COLGROUP_CONTENT,
|
|
GROUP_NONE),
|
|
ELEM(colgroup, true, false, GROUP_NONE, GROUP_COLGROUP_CONTENT),
|
|
ELEM(data, true, false, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
|
|
ELEM(datalist, true, false, GROUP_PHRASE,
|
|
GROUP_OPTIONS | GROUP_INLINE_ELEMENT),
|
|
ELEM(dd, true, false, GROUP_DL_CONTENT, GROUP_FLOW_ELEMENT),
|
|
ELEM(del, true, true, GROUP_PHRASE | GROUP_BLOCK, GROUP_FLOW_ELEMENT),
|
|
ELEM(details, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
|
|
ELEM(dfn, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
|
|
ELEM(dialog, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
|
|
ELEM(dir, true, false, GROUP_BLOCK, GROUP_LI),
|
|
ELEM(div, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
|
|
ELEM(dl, true, false, GROUP_BLOCK, GROUP_DL_CONTENT),
|
|
ELEM(dt, true, true, GROUP_DL_CONTENT, GROUP_INLINE_ELEMENT),
|
|
ELEM(em, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
|
|
ELEM(embed, false, false, GROUP_NONE, GROUP_NONE),
|
|
ELEM(fieldset, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
|
|
ELEM(figcaption, true, false, GROUP_FIGCAPTION, GROUP_FLOW_ELEMENT),
|
|
ELEM(figure, true, true, GROUP_BLOCK,
|
|
GROUP_FLOW_ELEMENT | GROUP_FIGCAPTION),
|
|
ELEM(font, true, true, GROUP_SPECIAL, GROUP_INLINE_ELEMENT),
|
|
ELEM(footer, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
|
|
ELEM(form, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
|
|
ELEM(frame, false, false, GROUP_FRAME, GROUP_NONE),
|
|
ELEM(frameset, true, true, GROUP_FRAME, GROUP_FRAME),
|
|
ELEM(h1, true, false, GROUP_BLOCK | GROUP_HEADING, GROUP_INLINE_ELEMENT),
|
|
ELEM(h2, true, false, GROUP_BLOCK | GROUP_HEADING, GROUP_INLINE_ELEMENT),
|
|
ELEM(h3, true, false, GROUP_BLOCK | GROUP_HEADING, GROUP_INLINE_ELEMENT),
|
|
ELEM(h4, true, false, GROUP_BLOCK | GROUP_HEADING, GROUP_INLINE_ELEMENT),
|
|
ELEM(h5, true, false, GROUP_BLOCK | GROUP_HEADING, GROUP_INLINE_ELEMENT),
|
|
ELEM(h6, true, false, GROUP_BLOCK | GROUP_HEADING, GROUP_INLINE_ELEMENT),
|
|
ELEM(head, true, false, GROUP_TOPLEVEL, GROUP_HEAD_CONTENT),
|
|
ELEM(header, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
|
|
ELEM(hgroup, true, false, GROUP_BLOCK, GROUP_HEADING),
|
|
ELEM(hr, false, false, GROUP_BLOCK, GROUP_NONE),
|
|
ELEM(html, true, false, GROUP_TOPLEVEL, GROUP_TOPLEVEL),
|
|
ELEM(i, true, true, GROUP_FONTSTYLE, GROUP_INLINE_ELEMENT),
|
|
ELEM(iframe, true, true, GROUP_SPECIAL | GROUP_BLOCK, GROUP_FLOW_ELEMENT),
|
|
ELEM(image, false, false, GROUP_NONE, GROUP_NONE),
|
|
ELEM(img, false, false, GROUP_SPECIAL | GROUP_PICTURE_CONTENT, GROUP_NONE),
|
|
ELEM(input, false, false, GROUP_FORMCONTROL, GROUP_NONE),
|
|
ELEM(ins, true, true, GROUP_PHRASE | GROUP_BLOCK, GROUP_FLOW_ELEMENT),
|
|
ELEM(kbd, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
|
|
ELEM(keygen, false, false, GROUP_NONE, GROUP_NONE),
|
|
ELEM(label, true, false, GROUP_FORMCONTROL, GROUP_INLINE_ELEMENT),
|
|
ELEM(legend, true, true, GROUP_NONE, GROUP_INLINE_ELEMENT),
|
|
ELEM(li, true, false, GROUP_LI, GROUP_FLOW_ELEMENT),
|
|
ELEM(link, false, false, GROUP_HEAD_CONTENT, GROUP_NONE),
|
|
ELEM(listing, true, true, GROUP_BLOCK, GROUP_INLINE_ELEMENT),
|
|
ELEM(main, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
|
|
ELEM(map, true, true, GROUP_SPECIAL, GROUP_BLOCK | GROUP_MAP_CONTENT),
|
|
ELEM(mark, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
|
|
ELEM(marquee, true, false, GROUP_NONE, GROUP_NONE),
|
|
ELEM(menu, true, true, GROUP_BLOCK, GROUP_LI | GROUP_FLOW_ELEMENT),
|
|
ELEM(meta, false, false, GROUP_HEAD_CONTENT, GROUP_NONE),
|
|
ELEM(meter, true, false, GROUP_SPECIAL, GROUP_FLOW_ELEMENT),
|
|
ELEM(multicol, false, false, GROUP_NONE, GROUP_NONE),
|
|
ELEM(nav, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
|
|
ELEM(nobr, true, false, GROUP_NONE, GROUP_NONE),
|
|
ELEM(noembed, false, false, GROUP_NONE, GROUP_NONE),
|
|
ELEM(noframes, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
|
|
ELEM(noscript, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
|
|
ELEM(object, true, true, GROUP_SPECIAL | GROUP_BLOCK,
|
|
GROUP_FLOW_ELEMENT | GROUP_OBJECT_CONTENT),
|
|
// XXX Can contain self and ul because editor does sublists illegally.
|
|
ELEM(ol, true, true, GROUP_BLOCK | GROUP_OL_UL, GROUP_LI | GROUP_OL_UL),
|
|
ELEM(optgroup, true, false, GROUP_SELECT_CONTENT, GROUP_OPTIONS),
|
|
ELEM(option, true, false, GROUP_SELECT_CONTENT | GROUP_OPTIONS, GROUP_LEAF),
|
|
ELEM(output, true, true, GROUP_SPECIAL, GROUP_INLINE_ELEMENT),
|
|
ELEM(p, true, false, GROUP_BLOCK | GROUP_P, GROUP_INLINE_ELEMENT),
|
|
ELEM(param, false, false, GROUP_OBJECT_CONTENT, GROUP_NONE),
|
|
ELEM(picture, true, false, GROUP_SPECIAL, GROUP_PICTURE_CONTENT),
|
|
ELEM(plaintext, false, false, GROUP_NONE, GROUP_NONE),
|
|
ELEM(pre, true, true, GROUP_BLOCK, GROUP_INLINE_ELEMENT),
|
|
ELEM(progress, true, false, GROUP_SPECIAL, GROUP_FLOW_ELEMENT),
|
|
ELEM(q, true, true, GROUP_SPECIAL, GROUP_INLINE_ELEMENT),
|
|
ELEM(rb, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
|
|
ELEM(rp, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
|
|
ELEM(rt, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
|
|
ELEM(rtc, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
|
|
ELEM(ruby, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
|
|
ELEM(s, true, true, GROUP_FONTSTYLE, GROUP_INLINE_ELEMENT),
|
|
ELEM(samp, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
|
|
ELEM(script, true, false, GROUP_HEAD_CONTENT | GROUP_SPECIAL, GROUP_LEAF),
|
|
ELEM(search, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
|
|
ELEM(section, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
|
|
ELEM(select, true, false, GROUP_FORMCONTROL, GROUP_SELECT_CONTENT),
|
|
ELEM(small, true, true, GROUP_FONTSTYLE, GROUP_INLINE_ELEMENT),
|
|
ELEM(slot, true, false, GROUP_NONE, GROUP_FLOW_ELEMENT),
|
|
ELEM(source, false, false, GROUP_PICTURE_CONTENT, GROUP_NONE),
|
|
ELEM(span, true, true, GROUP_SPECIAL, GROUP_INLINE_ELEMENT),
|
|
ELEM(strike, true, true, GROUP_FONTSTYLE, GROUP_INLINE_ELEMENT),
|
|
ELEM(strong, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
|
|
ELEM(style, true, false, GROUP_HEAD_CONTENT, GROUP_LEAF),
|
|
ELEM(sub, true, true, GROUP_SPECIAL, GROUP_INLINE_ELEMENT),
|
|
ELEM(summary, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
|
|
ELEM(sup, true, true, GROUP_SPECIAL, GROUP_INLINE_ELEMENT),
|
|
ELEM(table, true, false, GROUP_BLOCK, GROUP_TABLE_CONTENT),
|
|
ELEM(tbody, true, false, GROUP_TABLE_CONTENT, GROUP_TBODY_CONTENT),
|
|
ELEM(td, true, false, GROUP_TR_CONTENT, GROUP_FLOW_ELEMENT),
|
|
ELEM(textarea, true, false, GROUP_FORMCONTROL, GROUP_LEAF),
|
|
ELEM(tfoot, true, false, GROUP_NONE, GROUP_TBODY_CONTENT),
|
|
ELEM(th, true, false, GROUP_TR_CONTENT, GROUP_FLOW_ELEMENT),
|
|
ELEM(thead, true, false, GROUP_NONE, GROUP_TBODY_CONTENT),
|
|
ELEM(template, false, false, GROUP_NONE, GROUP_NONE),
|
|
ELEM(time, true, false, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
|
|
ELEM(title, true, false, GROUP_HEAD_CONTENT, GROUP_LEAF),
|
|
ELEM(tr, true, false, GROUP_TBODY_CONTENT, GROUP_TR_CONTENT),
|
|
ELEM(track, false, false, GROUP_NONE, GROUP_NONE),
|
|
ELEM(tt, true, true, GROUP_FONTSTYLE, GROUP_INLINE_ELEMENT),
|
|
ELEM(u, true, true, GROUP_FONTSTYLE, GROUP_INLINE_ELEMENT),
|
|
// XXX Can contain self and ol because editor does sublists illegally.
|
|
ELEM(ul, true, true, GROUP_BLOCK | GROUP_OL_UL, GROUP_LI | GROUP_OL_UL),
|
|
ELEM(var, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
|
|
ELEM(video, false, false, GROUP_NONE, GROUP_NONE),
|
|
ELEM(wbr, false, false, GROUP_NONE, GROUP_NONE),
|
|
ELEM(xmp, true, false, GROUP_BLOCK, GROUP_NONE),
|
|
|
|
// These aren't elements.
|
|
ELEM(text, false, false, GROUP_LEAF, GROUP_NONE),
|
|
ELEM(whitespace, false, false, GROUP_LEAF, GROUP_NONE),
|
|
ELEM(newline, false, false, GROUP_LEAF, GROUP_NONE),
|
|
ELEM(comment, false, false, GROUP_LEAF, GROUP_NONE),
|
|
ELEM(entity, false, false, GROUP_NONE, GROUP_NONE),
|
|
ELEM(doctypeDecl, false, false, GROUP_NONE, GROUP_NONE),
|
|
ELEM(markupDecl, false, false, GROUP_NONE, GROUP_NONE),
|
|
ELEM(instruction, false, false, GROUP_NONE, GROUP_NONE),
|
|
|
|
ELEM(userdefined, true, false, GROUP_NONE, GROUP_FLOW_ELEMENT)};
|
|
|
|
bool HTMLEditUtils::CanNodeContain(nsHTMLTag aParentTagId,
|
|
nsHTMLTag aChildTagId) {
|
|
NS_ASSERTION(
|
|
aParentTagId > eHTMLTag_unknown && aParentTagId <= eHTMLTag_userdefined,
|
|
"aParentTagId out of range!");
|
|
NS_ASSERTION(
|
|
aChildTagId > eHTMLTag_unknown && aChildTagId <= eHTMLTag_userdefined,
|
|
"aChildTagId out of range!");
|
|
|
|
#ifdef DEBUG
|
|
static bool checked = false;
|
|
if (!checked) {
|
|
checked = true;
|
|
int32_t i;
|
|
for (i = 1; i <= eHTMLTag_userdefined; ++i) {
|
|
NS_ASSERTION(kElements[i - 1].mTag == i,
|
|
"You need to update kElements (missing tags).");
|
|
}
|
|
}
|
|
#endif
|
|
|
|
// Special-case button.
|
|
if (aParentTagId == eHTMLTag_button) {
|
|
static const nsHTMLTag kButtonExcludeKids[] = {
|
|
eHTMLTag_a, eHTMLTag_fieldset, eHTMLTag_form, eHTMLTag_iframe,
|
|
eHTMLTag_input, eHTMLTag_select, eHTMLTag_textarea};
|
|
|
|
uint32_t j;
|
|
for (j = 0; j < ArrayLength(kButtonExcludeKids); ++j) {
|
|
if (kButtonExcludeKids[j] == aChildTagId) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Deprecated elements.
|
|
if (aChildTagId == eHTMLTag_bgsound) {
|
|
return false;
|
|
}
|
|
|
|
// Bug #67007, dont strip userdefined tags.
|
|
if (aChildTagId == eHTMLTag_userdefined) {
|
|
return true;
|
|
}
|
|
|
|
const ElementInfo& parent = kElements[aParentTagId - 1];
|
|
if (aParentTagId == aChildTagId) {
|
|
return parent.mCanContainSelf;
|
|
}
|
|
|
|
const ElementInfo& child = kElements[aChildTagId - 1];
|
|
return !!(parent.mCanContainGroups & child.mGroup);
|
|
}
|
|
|
|
bool HTMLEditUtils::ContentIsInert(const nsIContent& aContent) {
|
|
for (nsIContent* content :
|
|
aContent.InclusiveFlatTreeAncestorsOfType<nsIContent>()) {
|
|
if (nsIFrame* frame = content->GetPrimaryFrame()) {
|
|
return frame->StyleUI()->IsInert();
|
|
}
|
|
// If it doesn't have primary frame, we need to check its ancestors.
|
|
// This may occur if it's an invisible text node or element nodes whose
|
|
// display is an invisible value.
|
|
if (!content->IsElement()) {
|
|
continue;
|
|
}
|
|
if (content->AsElement()->State().HasState(dom::ElementState::INERT)) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool HTMLEditUtils::IsContainerNode(nsHTMLTag aTagId) {
|
|
NS_ASSERTION(aTagId > eHTMLTag_unknown && aTagId <= eHTMLTag_userdefined,
|
|
"aTagId out of range!");
|
|
|
|
return kElements[aTagId - 1].mIsContainer;
|
|
}
|
|
|
|
bool HTMLEditUtils::IsNonListSingleLineContainer(const nsINode& aNode) {
|
|
return aNode.IsAnyOfHTMLElements(
|
|
nsGkAtoms::address, nsGkAtoms::div, nsGkAtoms::h1, nsGkAtoms::h2,
|
|
nsGkAtoms::h3, nsGkAtoms::h4, nsGkAtoms::h5, nsGkAtoms::h6,
|
|
nsGkAtoms::listing, nsGkAtoms::p, nsGkAtoms::pre, nsGkAtoms::xmp);
|
|
}
|
|
|
|
bool HTMLEditUtils::IsSingleLineContainer(const nsINode& aNode) {
|
|
return IsNonListSingleLineContainer(aNode) ||
|
|
aNode.IsAnyOfHTMLElements(nsGkAtoms::li, nsGkAtoms::dt, nsGkAtoms::dd);
|
|
}
|
|
|
|
// static
|
|
template <typename PT, typename CT>
|
|
nsIContent* HTMLEditUtils::GetPreviousContent(
|
|
const EditorDOMPointBase<PT, CT>& aPoint, const WalkTreeOptions& aOptions,
|
|
BlockInlineCheck aBlockInlineCheck,
|
|
const Element* aAncestorLimiter /* = nullptr */) {
|
|
MOZ_ASSERT(aPoint.IsSetAndValid());
|
|
NS_WARNING_ASSERTION(
|
|
!aPoint.IsInDataNode() || aPoint.IsInTextNode(),
|
|
"GetPreviousContent() doesn't assume that the start point is a "
|
|
"data node except text node");
|
|
|
|
// If we are at the beginning of the node, or it is a text node, then just
|
|
// look before it.
|
|
if (aPoint.IsStartOfContainer() || aPoint.IsInTextNode()) {
|
|
if (aOptions.contains(WalkTreeOption::StopAtBlockBoundary) &&
|
|
aPoint.IsInContentNode() &&
|
|
HTMLEditUtils::IsBlockElement(
|
|
*aPoint.template ContainerAs<nsIContent>(), aBlockInlineCheck)) {
|
|
// If we aren't allowed to cross blocks, don't look before this block.
|
|
return nullptr;
|
|
}
|
|
return HTMLEditUtils::GetPreviousContent(
|
|
*aPoint.GetContainer(), aOptions, aBlockInlineCheck, aAncestorLimiter);
|
|
}
|
|
|
|
// else look before the child at 'aOffset'
|
|
if (aPoint.GetChild()) {
|
|
return HTMLEditUtils::GetPreviousContent(
|
|
*aPoint.GetChild(), aOptions, aBlockInlineCheck, aAncestorLimiter);
|
|
}
|
|
|
|
// unless there isn't one, in which case we are at the end of the node
|
|
// and want the deep-right child.
|
|
nsIContent* lastLeafContent = HTMLEditUtils::GetLastLeafContent(
|
|
*aPoint.GetContainer(),
|
|
{aOptions.contains(WalkTreeOption::StopAtBlockBoundary)
|
|
? LeafNodeType::LeafNodeOrChildBlock
|
|
: LeafNodeType::OnlyLeafNode},
|
|
aBlockInlineCheck);
|
|
if (!lastLeafContent) {
|
|
return nullptr;
|
|
}
|
|
|
|
if (!HTMLEditUtils::IsContentIgnored(*lastLeafContent, aOptions)) {
|
|
return lastLeafContent;
|
|
}
|
|
|
|
// restart the search from the non-editable node we just found
|
|
return HTMLEditUtils::GetPreviousContent(*lastLeafContent, aOptions,
|
|
aBlockInlineCheck, aAncestorLimiter);
|
|
}
|
|
|
|
// static
|
|
template <typename PT, typename CT>
|
|
nsIContent* HTMLEditUtils::GetNextContent(
|
|
const EditorDOMPointBase<PT, CT>& aPoint, const WalkTreeOptions& aOptions,
|
|
BlockInlineCheck aBlockInlineCheck,
|
|
const Element* aAncestorLimiter /* = nullptr */) {
|
|
MOZ_ASSERT(aPoint.IsSetAndValid());
|
|
NS_WARNING_ASSERTION(
|
|
!aPoint.IsInDataNode() || aPoint.IsInTextNode(),
|
|
"GetNextContent() doesn't assume that the start point is a "
|
|
"data node except text node");
|
|
|
|
auto point = aPoint.template To<EditorRawDOMPoint>();
|
|
|
|
// if the container is a text node, use its location instead
|
|
if (point.IsInTextNode()) {
|
|
point.SetAfter(point.GetContainer());
|
|
if (NS_WARN_IF(!point.IsSet())) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
if (point.GetChild()) {
|
|
if (aOptions.contains(WalkTreeOption::StopAtBlockBoundary) &&
|
|
HTMLEditUtils::IsBlockElement(*point.GetChild(), aBlockInlineCheck)) {
|
|
return point.GetChild();
|
|
}
|
|
|
|
nsIContent* firstLeafContent = HTMLEditUtils::GetFirstLeafContent(
|
|
*point.GetChild(),
|
|
{aOptions.contains(WalkTreeOption::StopAtBlockBoundary)
|
|
? LeafNodeType::LeafNodeOrChildBlock
|
|
: LeafNodeType::OnlyLeafNode},
|
|
aBlockInlineCheck);
|
|
if (!firstLeafContent) {
|
|
return point.GetChild();
|
|
}
|
|
|
|
// XXX Why do we need to do this check? The leaf node must be a descendant
|
|
// of `point.GetChild()`.
|
|
if (aAncestorLimiter &&
|
|
(firstLeafContent == aAncestorLimiter ||
|
|
!firstLeafContent->IsInclusiveDescendantOf(aAncestorLimiter))) {
|
|
return nullptr;
|
|
}
|
|
|
|
if (!HTMLEditUtils::IsContentIgnored(*firstLeafContent, aOptions)) {
|
|
return firstLeafContent;
|
|
}
|
|
|
|
// restart the search from the non-editable node we just found
|
|
return HTMLEditUtils::GetNextContent(*firstLeafContent, aOptions,
|
|
aBlockInlineCheck, aAncestorLimiter);
|
|
}
|
|
|
|
// unless there isn't one, in which case we are at the end of the node
|
|
// and want the next one.
|
|
if (aOptions.contains(WalkTreeOption::StopAtBlockBoundary) &&
|
|
point.IsInContentNode() &&
|
|
HTMLEditUtils::IsBlockElement(*point.template ContainerAs<nsIContent>(),
|
|
aBlockInlineCheck)) {
|
|
// don't cross out of parent block
|
|
return nullptr;
|
|
}
|
|
|
|
return HTMLEditUtils::GetNextContent(*point.GetContainer(), aOptions,
|
|
aBlockInlineCheck, aAncestorLimiter);
|
|
}
|
|
|
|
// static
|
|
nsIContent* HTMLEditUtils::GetAdjacentLeafContent(
|
|
const nsINode& aNode, WalkTreeDirection aWalkTreeDirection,
|
|
const WalkTreeOptions& aOptions, BlockInlineCheck aBlockInlineCheck,
|
|
const Element* aAncestorLimiter /* = nullptr */) {
|
|
// called only by GetPriorNode so we don't need to check params.
|
|
MOZ_ASSERT(&aNode != aAncestorLimiter);
|
|
MOZ_ASSERT_IF(aAncestorLimiter,
|
|
aAncestorLimiter->IsInclusiveDescendantOf(aAncestorLimiter));
|
|
|
|
const nsINode* node = &aNode;
|
|
for (;;) {
|
|
// if aNode has a sibling in the right direction, return
|
|
// that sibling's closest child (or itself if it has no children)
|
|
nsIContent* sibling = aWalkTreeDirection == WalkTreeDirection::Forward
|
|
? node->GetNextSibling()
|
|
: node->GetPreviousSibling();
|
|
if (sibling) {
|
|
// XXX If `sibling` belongs to siblings of inclusive ancestors of aNode,
|
|
// perhaps, we need to use
|
|
// IgnoreInsideBlockBoundary(aBlockInlineCheck) here.
|
|
if (aOptions.contains(WalkTreeOption::StopAtBlockBoundary) &&
|
|
HTMLEditUtils::IsBlockElement(*sibling, aBlockInlineCheck)) {
|
|
// don't look inside previous sibling, since it is a block
|
|
return sibling;
|
|
}
|
|
const LeafNodeTypes leafNodeTypes = {
|
|
aOptions.contains(WalkTreeOption::StopAtBlockBoundary)
|
|
? LeafNodeType::LeafNodeOrChildBlock
|
|
: LeafNodeType::OnlyLeafNode};
|
|
nsIContent* leafContent =
|
|
aWalkTreeDirection == WalkTreeDirection::Forward
|
|
? HTMLEditUtils::GetFirstLeafContent(*sibling, leafNodeTypes,
|
|
aBlockInlineCheck)
|
|
: HTMLEditUtils::GetLastLeafContent(*sibling, leafNodeTypes,
|
|
aBlockInlineCheck);
|
|
return leafContent ? leafContent : sibling;
|
|
}
|
|
|
|
nsIContent* parent = node->GetParent();
|
|
if (!parent) {
|
|
return nullptr;
|
|
}
|
|
|
|
if (parent == aAncestorLimiter ||
|
|
(aOptions.contains(WalkTreeOption::StopAtBlockBoundary) &&
|
|
HTMLEditUtils::IsBlockElement(*parent, aBlockInlineCheck))) {
|
|
return nullptr;
|
|
}
|
|
|
|
node = parent;
|
|
}
|
|
|
|
MOZ_ASSERT_UNREACHABLE("What part of for(;;) do you not understand?");
|
|
return nullptr;
|
|
}
|
|
|
|
// static
|
|
nsIContent* HTMLEditUtils::GetAdjacentContent(
|
|
const nsINode& aNode, WalkTreeDirection aWalkTreeDirection,
|
|
const WalkTreeOptions& aOptions, BlockInlineCheck aBlockInlineCheck,
|
|
const Element* aAncestorLimiter /* = nullptr */) {
|
|
if (&aNode == aAncestorLimiter) {
|
|
// Don't allow traversal above the root node! This helps
|
|
// prevent us from accidentally editing browser content
|
|
// when the editor is in a text widget.
|
|
return nullptr;
|
|
}
|
|
|
|
nsIContent* leafContent = HTMLEditUtils::GetAdjacentLeafContent(
|
|
aNode, aWalkTreeDirection, aOptions, aBlockInlineCheck, aAncestorLimiter);
|
|
if (!leafContent) {
|
|
return nullptr;
|
|
}
|
|
|
|
if (!HTMLEditUtils::IsContentIgnored(*leafContent, aOptions)) {
|
|
return leafContent;
|
|
}
|
|
|
|
return HTMLEditUtils::GetAdjacentContent(*leafContent, aWalkTreeDirection,
|
|
aOptions, aBlockInlineCheck,
|
|
aAncestorLimiter);
|
|
}
|
|
|
|
// static
|
|
template <typename EditorDOMPointType>
|
|
EditorDOMPointType HTMLEditUtils::GetPreviousEditablePoint(
|
|
nsIContent& aContent, const Element* aAncestorLimiter,
|
|
InvisibleWhiteSpaces aInvisibleWhiteSpaces,
|
|
TableBoundary aHowToTreatTableBoundary) {
|
|
MOZ_ASSERT(HTMLEditUtils::IsSimplyEditableNode(aContent));
|
|
NS_ASSERTION(!HTMLEditUtils::IsAnyTableElement(&aContent) ||
|
|
HTMLEditUtils::IsTableCellOrCaption(aContent),
|
|
"HTMLEditUtils::GetPreviousEditablePoint() may return a point "
|
|
"between table structure elements");
|
|
|
|
if (&aContent == aAncestorLimiter) {
|
|
return EditorDOMPointType();
|
|
}
|
|
|
|
// First, look for previous content.
|
|
nsIContent* previousContent = aContent.GetPreviousSibling();
|
|
if (!previousContent) {
|
|
if (!aContent.GetParentElement()) {
|
|
return EditorDOMPointType();
|
|
}
|
|
nsIContent* inclusiveAncestor = &aContent;
|
|
for (Element* parentElement : aContent.AncestorsOfType<Element>()) {
|
|
if (parentElement == aAncestorLimiter ||
|
|
!HTMLEditUtils::IsSimplyEditableNode(*parentElement) ||
|
|
!HTMLEditUtils::CanCrossContentBoundary(*parentElement,
|
|
aHowToTreatTableBoundary)) {
|
|
// If cannot cross the parent element boundary, return the point of
|
|
// last inclusive ancestor point.
|
|
return EditorDOMPointType(inclusiveAncestor);
|
|
}
|
|
|
|
// Start of the parent element is a next editable point if it's an
|
|
// element which is not a table structure element.
|
|
if (!HTMLEditUtils::IsAnyTableElement(parentElement) ||
|
|
HTMLEditUtils::IsTableCellOrCaption(*parentElement)) {
|
|
inclusiveAncestor = parentElement;
|
|
}
|
|
|
|
previousContent = parentElement->GetPreviousSibling();
|
|
if (!previousContent) {
|
|
continue; // Keep looking for previous sibling of an ancestor.
|
|
}
|
|
|
|
// XXX Should we ignore data node like CDATA, Comment, etc?
|
|
|
|
// If previous content is not editable, let's return the point after it.
|
|
if (!HTMLEditUtils::IsSimplyEditableNode(*previousContent)) {
|
|
return EditorDOMPointType::After(*previousContent);
|
|
}
|
|
|
|
// If cannot cross previous content boundary, return start of last
|
|
// inclusive ancestor.
|
|
if (!HTMLEditUtils::CanCrossContentBoundary(*previousContent,
|
|
aHowToTreatTableBoundary)) {
|
|
return inclusiveAncestor == &aContent
|
|
? EditorDOMPointType(inclusiveAncestor)
|
|
: EditorDOMPointType(inclusiveAncestor, 0);
|
|
}
|
|
break;
|
|
}
|
|
if (!previousContent) {
|
|
return EditorDOMPointType(inclusiveAncestor);
|
|
}
|
|
} else if (!HTMLEditUtils::IsSimplyEditableNode(*previousContent)) {
|
|
return EditorDOMPointType::After(*previousContent);
|
|
} else if (!HTMLEditUtils::CanCrossContentBoundary(
|
|
*previousContent, aHowToTreatTableBoundary)) {
|
|
return EditorDOMPointType(&aContent);
|
|
}
|
|
|
|
// Next, look for end of the previous content.
|
|
nsIContent* leafContent = previousContent;
|
|
if (previousContent->GetChildCount() &&
|
|
HTMLEditUtils::IsContainerNode(*previousContent)) {
|
|
for (nsIContent* maybeLeafContent = previousContent->GetLastChild();
|
|
maybeLeafContent;
|
|
maybeLeafContent = maybeLeafContent->GetLastChild()) {
|
|
// If it's not an editable content or cannot cross the boundary,
|
|
// return the point after the content. Note that in this case,
|
|
// the content must not be any table elements except `<table>`
|
|
// because we've climbed down the tree.
|
|
if (!HTMLEditUtils::IsSimplyEditableNode(*maybeLeafContent) ||
|
|
!HTMLEditUtils::CanCrossContentBoundary(*maybeLeafContent,
|
|
aHowToTreatTableBoundary)) {
|
|
return EditorDOMPointType::After(*maybeLeafContent);
|
|
}
|
|
leafContent = maybeLeafContent;
|
|
if (!HTMLEditUtils::IsContainerNode(*leafContent)) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (leafContent->IsText()) {
|
|
Text* textNode = leafContent->AsText();
|
|
if (aInvisibleWhiteSpaces == InvisibleWhiteSpaces::Preserve) {
|
|
return EditorDOMPointType::AtEndOf(*textNode);
|
|
}
|
|
// There may be invisible trailing white-spaces which should be
|
|
// ignored. Let's scan its start.
|
|
return WSRunScanner::GetAfterLastVisiblePoint<EditorDOMPointType>(
|
|
*textNode, aAncestorLimiter);
|
|
}
|
|
|
|
// If it's a container element, return end of it. Otherwise, return
|
|
// the point after the non-container element.
|
|
return HTMLEditUtils::IsContainerNode(*leafContent)
|
|
? EditorDOMPointType::AtEndOf(*leafContent)
|
|
: EditorDOMPointType::After(*leafContent);
|
|
}
|
|
|
|
// static
|
|
template <typename EditorDOMPointType>
|
|
EditorDOMPointType HTMLEditUtils::GetNextEditablePoint(
|
|
nsIContent& aContent, const Element* aAncestorLimiter,
|
|
InvisibleWhiteSpaces aInvisibleWhiteSpaces,
|
|
TableBoundary aHowToTreatTableBoundary) {
|
|
MOZ_ASSERT(HTMLEditUtils::IsSimplyEditableNode(aContent));
|
|
NS_ASSERTION(!HTMLEditUtils::IsAnyTableElement(&aContent) ||
|
|
HTMLEditUtils::IsTableCellOrCaption(aContent),
|
|
"HTMLEditUtils::GetPreviousEditablePoint() may return a point "
|
|
"between table structure elements");
|
|
|
|
if (&aContent == aAncestorLimiter) {
|
|
return EditorDOMPointType();
|
|
}
|
|
|
|
// First, look for next content.
|
|
nsIContent* nextContent = aContent.GetNextSibling();
|
|
if (!nextContent) {
|
|
if (!aContent.GetParentElement()) {
|
|
return EditorDOMPointType();
|
|
}
|
|
nsIContent* inclusiveAncestor = &aContent;
|
|
for (Element* parentElement : aContent.AncestorsOfType<Element>()) {
|
|
if (parentElement == aAncestorLimiter ||
|
|
!HTMLEditUtils::IsSimplyEditableNode(*parentElement) ||
|
|
!HTMLEditUtils::CanCrossContentBoundary(*parentElement,
|
|
aHowToTreatTableBoundary)) {
|
|
// If cannot cross the parent element boundary, return the point of
|
|
// last inclusive ancestor point.
|
|
return EditorDOMPointType(inclusiveAncestor);
|
|
}
|
|
|
|
// End of the parent element is a next editable point if it's an
|
|
// element which is not a table structure element.
|
|
if (!HTMLEditUtils::IsAnyTableElement(parentElement) ||
|
|
HTMLEditUtils::IsTableCellOrCaption(*parentElement)) {
|
|
inclusiveAncestor = parentElement;
|
|
}
|
|
|
|
nextContent = parentElement->GetNextSibling();
|
|
if (!nextContent) {
|
|
continue; // Keep looking for next sibling of an ancestor.
|
|
}
|
|
|
|
// XXX Should we ignore data node like CDATA, Comment, etc?
|
|
|
|
// If next content is not editable, let's return the point after
|
|
// the last inclusive ancestor.
|
|
if (!HTMLEditUtils::IsSimplyEditableNode(*nextContent)) {
|
|
return EditorDOMPointType::After(*parentElement);
|
|
}
|
|
|
|
// If cannot cross next content boundary, return after the last
|
|
// inclusive ancestor.
|
|
if (!HTMLEditUtils::CanCrossContentBoundary(*nextContent,
|
|
aHowToTreatTableBoundary)) {
|
|
return EditorDOMPointType::After(*inclusiveAncestor);
|
|
}
|
|
break;
|
|
}
|
|
if (!nextContent) {
|
|
return EditorDOMPointType::After(*inclusiveAncestor);
|
|
}
|
|
} else if (!HTMLEditUtils::IsSimplyEditableNode(*nextContent)) {
|
|
return EditorDOMPointType::After(aContent);
|
|
} else if (!HTMLEditUtils::CanCrossContentBoundary(
|
|
*nextContent, aHowToTreatTableBoundary)) {
|
|
return EditorDOMPointType::After(aContent);
|
|
}
|
|
|
|
// Next, look for start of the next content.
|
|
nsIContent* leafContent = nextContent;
|
|
if (nextContent->GetChildCount() &&
|
|
HTMLEditUtils::IsContainerNode(*nextContent)) {
|
|
for (nsIContent* maybeLeafContent = nextContent->GetFirstChild();
|
|
maybeLeafContent;
|
|
maybeLeafContent = maybeLeafContent->GetFirstChild()) {
|
|
// If it's not an editable content or cannot cross the boundary,
|
|
// return the point at the content (i.e., start of its parent). Note
|
|
// that in this case, the content must not be any table elements except
|
|
// `<table>` because we've climbed down the tree.
|
|
if (!HTMLEditUtils::IsSimplyEditableNode(*maybeLeafContent) ||
|
|
!HTMLEditUtils::CanCrossContentBoundary(*maybeLeafContent,
|
|
aHowToTreatTableBoundary)) {
|
|
return EditorDOMPointType(maybeLeafContent);
|
|
}
|
|
leafContent = maybeLeafContent;
|
|
if (!HTMLEditUtils::IsContainerNode(*leafContent)) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (leafContent->IsText()) {
|
|
Text* textNode = leafContent->AsText();
|
|
if (aInvisibleWhiteSpaces == InvisibleWhiteSpaces::Preserve) {
|
|
return EditorDOMPointType(textNode, 0);
|
|
}
|
|
// There may be invisible leading white-spaces which should be
|
|
// ignored. Let's scan its start.
|
|
return WSRunScanner::GetFirstVisiblePoint<EditorDOMPointType>(
|
|
*textNode, aAncestorLimiter);
|
|
}
|
|
|
|
// If it's a container element, return start of it. Otherwise, return
|
|
// the point at the non-container element (i.e., start of its parent).
|
|
return HTMLEditUtils::IsContainerNode(*leafContent)
|
|
? EditorDOMPointType(leafContent, 0)
|
|
: EditorDOMPointType(leafContent);
|
|
}
|
|
|
|
// static
|
|
Element* HTMLEditUtils::GetAncestorElement(
|
|
const nsIContent& aContent, const AncestorTypes& aAncestorTypes,
|
|
BlockInlineCheck aBlockInlineCheck,
|
|
const Element* aAncestorLimiter /* = nullptr */) {
|
|
MOZ_ASSERT(
|
|
aAncestorTypes.contains(AncestorType::ClosestBlockElement) ||
|
|
aAncestorTypes.contains(AncestorType::MostDistantInlineElementInBlock) ||
|
|
aAncestorTypes.contains(AncestorType::ButtonElement));
|
|
|
|
if (&aContent == aAncestorLimiter) {
|
|
return nullptr;
|
|
}
|
|
|
|
const Element* theBodyElement = aContent.OwnerDoc()->GetBody();
|
|
const Element* theDocumentElement = aContent.OwnerDoc()->GetDocumentElement();
|
|
Element* lastAncestorElement = nullptr;
|
|
const bool editableElementOnly =
|
|
aAncestorTypes.contains(AncestorType::EditableElement);
|
|
const bool lookingForClosestBlockElement =
|
|
aAncestorTypes.contains(AncestorType::ClosestBlockElement);
|
|
const bool lookingForMostDistantInlineElementInBlock =
|
|
aAncestorTypes.contains(AncestorType::MostDistantInlineElementInBlock);
|
|
const bool ignoreHRElement =
|
|
aAncestorTypes.contains(AncestorType::IgnoreHRElement);
|
|
const bool lookingForButtonElement =
|
|
aAncestorTypes.contains(AncestorType::ButtonElement);
|
|
auto IsSearchingElementType = [&](const nsIContent& aContent) -> bool {
|
|
if (!aContent.IsElement() ||
|
|
(ignoreHRElement && aContent.IsHTMLElement(nsGkAtoms::hr))) {
|
|
return false;
|
|
}
|
|
if (editableElementOnly &&
|
|
!EditorUtils::IsEditableContent(aContent, EditorType::HTML)) {
|
|
return false;
|
|
}
|
|
return (lookingForClosestBlockElement &&
|
|
HTMLEditUtils::IsBlockElement(aContent, aBlockInlineCheck)) ||
|
|
(lookingForMostDistantInlineElementInBlock &&
|
|
HTMLEditUtils::IsInlineContent(aContent, aBlockInlineCheck)) ||
|
|
(lookingForButtonElement &&
|
|
aContent.IsHTMLElement(nsGkAtoms::button));
|
|
};
|
|
for (Element* element : aContent.AncestorsOfType<Element>()) {
|
|
if (editableElementOnly &&
|
|
!EditorUtils::IsEditableContent(*element, EditorType::HTML)) {
|
|
return lastAncestorElement && IsSearchingElementType(*lastAncestorElement)
|
|
? lastAncestorElement // editing host (can be inline element)
|
|
: nullptr;
|
|
}
|
|
if (ignoreHRElement && element->IsHTMLElement(nsGkAtoms::hr)) {
|
|
if (element == aAncestorLimiter) {
|
|
break;
|
|
}
|
|
continue;
|
|
}
|
|
if (lookingForButtonElement && element->IsHTMLElement(nsGkAtoms::button)) {
|
|
return element; // closest button element
|
|
}
|
|
if (HTMLEditUtils::IsBlockElement(*element, aBlockInlineCheck)) {
|
|
if (lookingForClosestBlockElement) {
|
|
return element; // closest block element
|
|
}
|
|
MOZ_ASSERT_IF(lastAncestorElement,
|
|
HTMLEditUtils::IsInlineContent(*lastAncestorElement,
|
|
aBlockInlineCheck));
|
|
return lastAncestorElement; // the last inline element which we found
|
|
}
|
|
if (element == aAncestorLimiter || element == theBodyElement ||
|
|
element == theDocumentElement) {
|
|
break;
|
|
}
|
|
lastAncestorElement = element;
|
|
}
|
|
return lastAncestorElement && IsSearchingElementType(*lastAncestorElement)
|
|
? lastAncestorElement
|
|
: nullptr;
|
|
}
|
|
|
|
// static
|
|
Element* HTMLEditUtils::GetInclusiveAncestorElement(
|
|
const nsIContent& aContent, const AncestorTypes& aAncestorTypes,
|
|
BlockInlineCheck aBlockInlineCheck,
|
|
const Element* aAncestorLimiter /* = nullptr */) {
|
|
MOZ_ASSERT(
|
|
aAncestorTypes.contains(AncestorType::ClosestBlockElement) ||
|
|
aAncestorTypes.contains(AncestorType::MostDistantInlineElementInBlock) ||
|
|
aAncestorTypes.contains(AncestorType::ButtonElement));
|
|
|
|
const Element* theBodyElement = aContent.OwnerDoc()->GetBody();
|
|
const Element* theDocumentElement = aContent.OwnerDoc()->GetDocumentElement();
|
|
const bool editableElementOnly =
|
|
aAncestorTypes.contains(AncestorType::EditableElement);
|
|
const bool lookingForClosestBlockElement =
|
|
aAncestorTypes.contains(AncestorType::ClosestBlockElement);
|
|
const bool lookingForMostDistantInlineElementInBlock =
|
|
aAncestorTypes.contains(AncestorType::MostDistantInlineElementInBlock);
|
|
const bool lookingForButtonElement =
|
|
aAncestorTypes.contains(AncestorType::ButtonElement);
|
|
const bool ignoreHRElement =
|
|
aAncestorTypes.contains(AncestorType::IgnoreHRElement);
|
|
auto IsSearchingElementType = [&](const nsIContent& aContent) -> bool {
|
|
if (!aContent.IsElement() ||
|
|
(ignoreHRElement && aContent.IsHTMLElement(nsGkAtoms::hr))) {
|
|
return false;
|
|
}
|
|
if (editableElementOnly &&
|
|
!EditorUtils::IsEditableContent(aContent, EditorType::HTML)) {
|
|
return false;
|
|
}
|
|
return (lookingForClosestBlockElement &&
|
|
HTMLEditUtils::IsBlockElement(aContent, aBlockInlineCheck)) ||
|
|
(lookingForMostDistantInlineElementInBlock &&
|
|
HTMLEditUtils::IsInlineContent(aContent, aBlockInlineCheck)) ||
|
|
(lookingForButtonElement &&
|
|
aContent.IsHTMLElement(nsGkAtoms::button));
|
|
};
|
|
|
|
// If aContent is the body element or the document element, we shouldn't climb
|
|
// up to its parent.
|
|
if (editableElementOnly &&
|
|
(&aContent == theBodyElement || &aContent == theDocumentElement)) {
|
|
return IsSearchingElementType(aContent)
|
|
? const_cast<Element*>(aContent.AsElement())
|
|
: nullptr;
|
|
}
|
|
|
|
if (lookingForButtonElement && aContent.IsHTMLElement(nsGkAtoms::button)) {
|
|
return const_cast<Element*>(aContent.AsElement());
|
|
}
|
|
|
|
// If aContent is a block element, we don't need to climb up the tree.
|
|
// Consider the result right now.
|
|
if ((lookingForClosestBlockElement ||
|
|
lookingForMostDistantInlineElementInBlock) &&
|
|
HTMLEditUtils::IsBlockElement(aContent, aBlockInlineCheck) &&
|
|
!(ignoreHRElement && aContent.IsHTMLElement(nsGkAtoms::hr))) {
|
|
return IsSearchingElementType(aContent)
|
|
? const_cast<Element*>(aContent.AsElement())
|
|
: nullptr;
|
|
}
|
|
|
|
// If aContent is the last element to search range because of the parent
|
|
// element type, consider the result before calling GetAncestorElement()
|
|
// because it won't return aContent.
|
|
if (!aContent.GetParent() ||
|
|
(editableElementOnly && !EditorUtils::IsEditableContent(
|
|
*aContent.GetParent(), EditorType::HTML)) ||
|
|
(!lookingForClosestBlockElement &&
|
|
HTMLEditUtils::IsBlockElement(*aContent.GetParent(),
|
|
aBlockInlineCheck) &&
|
|
!(ignoreHRElement &&
|
|
aContent.GetParent()->IsHTMLElement(nsGkAtoms::hr)))) {
|
|
return IsSearchingElementType(aContent)
|
|
? const_cast<Element*>(aContent.AsElement())
|
|
: nullptr;
|
|
}
|
|
|
|
if (&aContent == aAncestorLimiter) {
|
|
return nullptr;
|
|
}
|
|
|
|
return HTMLEditUtils::GetAncestorElement(aContent, aAncestorTypes,
|
|
aBlockInlineCheck, aAncestorLimiter);
|
|
}
|
|
|
|
// static
|
|
Element* HTMLEditUtils::GetClosestAncestorAnyListElement(
|
|
const nsIContent& aContent) {
|
|
for (Element* element : aContent.AncestorsOfType<Element>()) {
|
|
if (HTMLEditUtils::IsAnyListElement(element)) {
|
|
return element;
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
// static
|
|
Element* HTMLEditUtils::GetClosestInclusiveAncestorAnyListElement(
|
|
const nsIContent& aContent) {
|
|
for (Element* element : aContent.InclusiveAncestorsOfType<Element>()) {
|
|
if (HTMLEditUtils::IsAnyListElement(element)) {
|
|
return element;
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
EditAction HTMLEditUtils::GetEditActionForInsert(const nsAtom& aTagName) {
|
|
// This method may be in a hot path. So, return only necessary
|
|
// EditAction::eInsert*Element.
|
|
if (&aTagName == nsGkAtoms::ul) {
|
|
// For InputEvent.inputType, "insertUnorderedList".
|
|
return EditAction::eInsertUnorderedListElement;
|
|
}
|
|
if (&aTagName == nsGkAtoms::ol) {
|
|
// For InputEvent.inputType, "insertOrderedList".
|
|
return EditAction::eInsertOrderedListElement;
|
|
}
|
|
if (&aTagName == nsGkAtoms::hr) {
|
|
// For InputEvent.inputType, "insertHorizontalRule".
|
|
return EditAction::eInsertHorizontalRuleElement;
|
|
}
|
|
return EditAction::eInsertNode;
|
|
}
|
|
|
|
EditAction HTMLEditUtils::GetEditActionForRemoveList(const nsAtom& aTagName) {
|
|
// This method may be in a hot path. So, return only necessary
|
|
// EditAction::eRemove*Element.
|
|
if (&aTagName == nsGkAtoms::ul) {
|
|
// For InputEvent.inputType, "insertUnorderedList".
|
|
return EditAction::eRemoveUnorderedListElement;
|
|
}
|
|
if (&aTagName == nsGkAtoms::ol) {
|
|
// For InputEvent.inputType, "insertOrderedList".
|
|
return EditAction::eRemoveOrderedListElement;
|
|
}
|
|
return EditAction::eRemoveListElement;
|
|
}
|
|
|
|
EditAction HTMLEditUtils::GetEditActionForInsert(const Element& aElement) {
|
|
return GetEditActionForInsert(*aElement.NodeInfo()->NameAtom());
|
|
}
|
|
|
|
EditAction HTMLEditUtils::GetEditActionForFormatText(const nsAtom& aProperty,
|
|
const nsAtom* aAttribute,
|
|
bool aToSetStyle) {
|
|
// This method may be in a hot path. So, return only necessary
|
|
// EditAction::eSet*Property or EditAction::eRemove*Property.
|
|
if (&aProperty == nsGkAtoms::b) {
|
|
return aToSetStyle ? EditAction::eSetFontWeightProperty
|
|
: EditAction::eRemoveFontWeightProperty;
|
|
}
|
|
if (&aProperty == nsGkAtoms::i) {
|
|
return aToSetStyle ? EditAction::eSetTextStyleProperty
|
|
: EditAction::eRemoveTextStyleProperty;
|
|
}
|
|
if (&aProperty == nsGkAtoms::u) {
|
|
return aToSetStyle ? EditAction::eSetTextDecorationPropertyUnderline
|
|
: EditAction::eRemoveTextDecorationPropertyUnderline;
|
|
}
|
|
if (&aProperty == nsGkAtoms::strike) {
|
|
return aToSetStyle ? EditAction::eSetTextDecorationPropertyLineThrough
|
|
: EditAction::eRemoveTextDecorationPropertyLineThrough;
|
|
}
|
|
if (&aProperty == nsGkAtoms::sup) {
|
|
return aToSetStyle ? EditAction::eSetVerticalAlignPropertySuper
|
|
: EditAction::eRemoveVerticalAlignPropertySuper;
|
|
}
|
|
if (&aProperty == nsGkAtoms::sub) {
|
|
return aToSetStyle ? EditAction::eSetVerticalAlignPropertySub
|
|
: EditAction::eRemoveVerticalAlignPropertySub;
|
|
}
|
|
if (&aProperty == nsGkAtoms::font) {
|
|
if (aAttribute == nsGkAtoms::face) {
|
|
return aToSetStyle ? EditAction::eSetFontFamilyProperty
|
|
: EditAction::eRemoveFontFamilyProperty;
|
|
}
|
|
if (aAttribute == nsGkAtoms::color) {
|
|
return aToSetStyle ? EditAction::eSetColorProperty
|
|
: EditAction::eRemoveColorProperty;
|
|
}
|
|
if (aAttribute == nsGkAtoms::bgcolor) {
|
|
return aToSetStyle ? EditAction::eSetBackgroundColorPropertyInline
|
|
: EditAction::eRemoveBackgroundColorPropertyInline;
|
|
}
|
|
}
|
|
return aToSetStyle ? EditAction::eSetInlineStyleProperty
|
|
: EditAction::eRemoveInlineStyleProperty;
|
|
}
|
|
|
|
EditAction HTMLEditUtils::GetEditActionForAlignment(
|
|
const nsAString& aAlignType) {
|
|
// This method may be in a hot path. So, return only necessary
|
|
// EditAction::eAlign*.
|
|
if (aAlignType.EqualsLiteral("left")) {
|
|
return EditAction::eAlignLeft;
|
|
}
|
|
if (aAlignType.EqualsLiteral("right")) {
|
|
return EditAction::eAlignRight;
|
|
}
|
|
if (aAlignType.EqualsLiteral("center")) {
|
|
return EditAction::eAlignCenter;
|
|
}
|
|
if (aAlignType.EqualsLiteral("justify")) {
|
|
return EditAction::eJustify;
|
|
}
|
|
return EditAction::eSetAlignment;
|
|
}
|
|
|
|
// static
|
|
template <typename EditorDOMPointType>
|
|
nsIContent* HTMLEditUtils::GetContentToPreserveInlineStyles(
|
|
const EditorDOMPointType& aPoint, const Element& aEditingHost) {
|
|
MOZ_ASSERT(aPoint.IsSetAndValid());
|
|
if (MOZ_UNLIKELY(!aPoint.IsInContentNode())) {
|
|
return nullptr;
|
|
}
|
|
// If it points middle of a text node, use it. Otherwise, scan next visible
|
|
// thing and use the style of following text node if there is.
|
|
if (aPoint.IsInTextNode() && !aPoint.IsEndOfContainer()) {
|
|
return aPoint.template ContainerAs<nsIContent>();
|
|
}
|
|
for (auto point = aPoint.template To<EditorRawDOMPoint>(); point.IsSet();) {
|
|
const WSScanResult nextVisibleThing =
|
|
WSRunScanner::ScanInclusiveNextVisibleNodeOrBlockBoundary(
|
|
&aEditingHost, point,
|
|
BlockInlineCheck::UseComputedDisplayOutsideStyle);
|
|
if (nextVisibleThing.InVisibleOrCollapsibleCharacters()) {
|
|
return nextVisibleThing.TextPtr();
|
|
}
|
|
// Ignore empty inline container elements because it's not visible for
|
|
// users so that using the style will appear suddenly from point of
|
|
// view of users.
|
|
if (nextVisibleThing.ReachedSpecialContent() &&
|
|
nextVisibleThing.IsContentEditable() &&
|
|
nextVisibleThing.ContentIsElement() &&
|
|
!nextVisibleThing.ElementPtr()->HasChildNodes() &&
|
|
HTMLEditUtils::IsContainerNode(*nextVisibleThing.ElementPtr())) {
|
|
point.SetAfter(nextVisibleThing.ElementPtr());
|
|
continue;
|
|
}
|
|
// Otherwise, we should use style of the container of the start point.
|
|
break;
|
|
}
|
|
return aPoint.template ContainerAs<nsIContent>();
|
|
}
|
|
|
|
template <typename EditorDOMPointType, typename EditorDOMPointTypeInput>
|
|
EditorDOMPointType HTMLEditUtils::GetBetterInsertionPointFor(
|
|
const nsIContent& aContentToInsert,
|
|
const EditorDOMPointTypeInput& aPointToInsert,
|
|
const Element& aEditingHost) {
|
|
if (NS_WARN_IF(!aPointToInsert.IsSet())) {
|
|
return EditorDOMPointType();
|
|
}
|
|
|
|
auto pointToInsert =
|
|
aPointToInsert.template GetNonAnonymousSubtreePoint<EditorDOMPointType>();
|
|
if (MOZ_UNLIKELY(
|
|
NS_WARN_IF(!pointToInsert.IsSet()) ||
|
|
NS_WARN_IF(!pointToInsert.GetContainer()->IsInclusiveDescendantOf(
|
|
&aEditingHost)))) {
|
|
// Cannot insert aContentToInsert into this DOM tree.
|
|
return EditorDOMPointType();
|
|
}
|
|
|
|
// If the node to insert is not a block level element, we can insert it
|
|
// at any point.
|
|
if (!HTMLEditUtils::IsBlockElement(
|
|
aContentToInsert, BlockInlineCheck::UseComputedDisplayStyle)) {
|
|
return pointToInsert;
|
|
}
|
|
|
|
WSRunScanner wsScannerForPointToInsert(
|
|
const_cast<Element*>(&aEditingHost), pointToInsert,
|
|
BlockInlineCheck::UseComputedDisplayStyle);
|
|
|
|
// If the insertion position is after the last visible item in a line,
|
|
// i.e., the insertion position is just before a visible line break <br>,
|
|
// we want to skip to the position just after the line break (see bug 68767).
|
|
const WSScanResult forwardScanFromPointToInsertResult =
|
|
wsScannerForPointToInsert.ScanInclusiveNextVisibleNodeOrBlockBoundaryFrom(
|
|
pointToInsert);
|
|
// So, if the next visible node isn't a <br> element, we can insert the block
|
|
// level element to the point.
|
|
if (!forwardScanFromPointToInsertResult.ReachedBRElement()) {
|
|
return pointToInsert;
|
|
}
|
|
|
|
// However, we must not skip next <br> element when the caret appears to be
|
|
// positioned at the beginning of a block, in that case skipping the <br>
|
|
// would not insert the <br> at the caret position, but after the current
|
|
// empty line.
|
|
const WSScanResult backwardScanFromPointToInsertResult =
|
|
wsScannerForPointToInsert.ScanPreviousVisibleNodeOrBlockBoundaryFrom(
|
|
pointToInsert);
|
|
// So, if there is no previous visible node,
|
|
// or, if both nodes of the insertion point is <br> elements,
|
|
// or, if the previous visible node is different block,
|
|
// we need to skip the following <br>. So, otherwise, we can insert the
|
|
// block at the insertion point.
|
|
if (NS_WARN_IF(backwardScanFromPointToInsertResult.Failed()) ||
|
|
backwardScanFromPointToInsertResult.ReachedInlineEditingHostBoundary() ||
|
|
backwardScanFromPointToInsertResult.ReachedBRElement() ||
|
|
backwardScanFromPointToInsertResult.ReachedCurrentBlockBoundary()) {
|
|
return pointToInsert;
|
|
}
|
|
|
|
return forwardScanFromPointToInsertResult
|
|
.template PointAfterReachedContent<EditorDOMPointType>();
|
|
}
|
|
|
|
// static
|
|
template <typename EditorDOMPointType, typename EditorDOMPointTypeInput>
|
|
EditorDOMPointType HTMLEditUtils::GetBetterCaretPositionToInsertText(
|
|
const EditorDOMPointTypeInput& aPoint, const Element& aEditingHost) {
|
|
MOZ_ASSERT(aPoint.IsSetAndValid());
|
|
MOZ_ASSERT(
|
|
aPoint.GetContainer()->IsInclusiveFlatTreeDescendantOf(&aEditingHost));
|
|
|
|
if (aPoint.IsInTextNode()) {
|
|
return aPoint.template To<EditorDOMPointType>();
|
|
}
|
|
if (!aPoint.IsEndOfContainer() && aPoint.GetChild() &&
|
|
aPoint.GetChild()->IsText()) {
|
|
return EditorDOMPointType(aPoint.GetChild(), 0u);
|
|
}
|
|
if (aPoint.IsEndOfContainer()) {
|
|
WSRunScanner scanner(&aEditingHost, aPoint,
|
|
BlockInlineCheck::UseComputedDisplayStyle);
|
|
const WSScanResult previousThing =
|
|
scanner.ScanPreviousVisibleNodeOrBlockBoundaryFrom(aPoint);
|
|
if (previousThing.InVisibleOrCollapsibleCharacters()) {
|
|
return EditorDOMPointType::AtEndOf(*previousThing.TextPtr());
|
|
}
|
|
}
|
|
if (HTMLEditUtils::CanNodeContain(*aPoint.GetContainer(),
|
|
*nsGkAtoms::textTagName)) {
|
|
return aPoint.template To<EditorDOMPointType>();
|
|
}
|
|
if (MOZ_UNLIKELY(aPoint.GetContainer() == &aEditingHost ||
|
|
!aPoint.template GetContainerParentAs<nsIContent>() ||
|
|
!HTMLEditUtils::CanNodeContain(
|
|
*aPoint.template ContainerParentAs<nsIContent>(),
|
|
*nsGkAtoms::textTagName))) {
|
|
return EditorDOMPointType();
|
|
}
|
|
return aPoint.ParentPoint().template To<EditorDOMPointType>();
|
|
}
|
|
|
|
// static
|
|
template <typename EditorDOMPointType, typename EditorDOMPointTypeInput>
|
|
Result<EditorDOMPointType, nsresult>
|
|
HTMLEditUtils::ComputePointToPutCaretInElementIfOutside(
|
|
const Element& aElement, const EditorDOMPointTypeInput& aCurrentPoint) {
|
|
MOZ_ASSERT(aCurrentPoint.IsSet());
|
|
|
|
// FYI: This was moved from
|
|
// https://searchfox.org/mozilla-central/rev/d3c2f51d89c3ca008ff0cb5a057e77ccd973443e/editor/libeditor/HTMLEditSubActionHandler.cpp#9193
|
|
|
|
// Use range boundaries and RangeUtils::CompareNodeToRange() to compare
|
|
// selection start to new block.
|
|
bool nodeBefore, nodeAfter;
|
|
nsresult rv = RangeUtils::CompareNodeToRangeBoundaries(
|
|
const_cast<Element*>(&aElement), aCurrentPoint.ToRawRangeBoundary(),
|
|
aCurrentPoint.ToRawRangeBoundary(), &nodeBefore, &nodeAfter);
|
|
if (NS_FAILED(rv)) {
|
|
NS_WARNING("RangeUtils::CompareNodeToRange() failed");
|
|
return Err(rv);
|
|
}
|
|
|
|
if (nodeBefore && nodeAfter) {
|
|
return EditorDOMPointType(); // aCurrentPoint is in aElement
|
|
}
|
|
|
|
if (nodeBefore) {
|
|
// selection is after block. put at end of block.
|
|
const nsIContent* lastEditableContent = HTMLEditUtils::GetLastChild(
|
|
aElement, {WalkTreeOption::IgnoreNonEditableNode});
|
|
if (!lastEditableContent) {
|
|
lastEditableContent = &aElement;
|
|
}
|
|
if (lastEditableContent->IsText() ||
|
|
HTMLEditUtils::IsContainerNode(*lastEditableContent)) {
|
|
return EditorDOMPointType::AtEndOf(*lastEditableContent);
|
|
}
|
|
MOZ_ASSERT(lastEditableContent->GetParentNode());
|
|
return EditorDOMPointType::After(*lastEditableContent);
|
|
}
|
|
|
|
// selection is before block. put at start of block.
|
|
const nsIContent* firstEditableContent = HTMLEditUtils::GetFirstChild(
|
|
aElement, {WalkTreeOption::IgnoreNonEditableNode});
|
|
if (!firstEditableContent) {
|
|
firstEditableContent = &aElement;
|
|
}
|
|
if (firstEditableContent->IsText() ||
|
|
HTMLEditUtils::IsContainerNode(*firstEditableContent)) {
|
|
MOZ_ASSERT(firstEditableContent->GetParentNode());
|
|
// XXX Shouldn't this be EditorDOMPointType(firstEditableContent, 0u)?
|
|
return EditorDOMPointType(firstEditableContent);
|
|
}
|
|
// XXX And shouldn't this be EditorDOMPointType(firstEditableContent)?
|
|
return EditorDOMPointType(firstEditableContent, 0u);
|
|
}
|
|
|
|
// static
|
|
bool HTMLEditUtils::IsInlineStyleSetByElement(
|
|
const nsIContent& aContent, const EditorInlineStyle& aStyle,
|
|
const nsAString* aValue, nsAString* aOutValue /* = nullptr */) {
|
|
for (Element* element : aContent.InclusiveAncestorsOfType<Element>()) {
|
|
if (aStyle.mHTMLProperty != element->NodeInfo()->NameAtom()) {
|
|
continue;
|
|
}
|
|
if (!aStyle.mAttribute) {
|
|
return true;
|
|
}
|
|
nsAutoString value;
|
|
element->GetAttr(aStyle.mAttribute, value);
|
|
if (aOutValue) {
|
|
*aOutValue = value;
|
|
}
|
|
if (!value.IsEmpty()) {
|
|
if (!aValue) {
|
|
return true;
|
|
}
|
|
if (aValue->Equals(value, nsCaseInsensitiveStringComparator)) {
|
|
return true;
|
|
}
|
|
// We found the prop with the attribute, but the value doesn't match.
|
|
return false;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// static
|
|
size_t HTMLEditUtils::CollectChildren(
|
|
const nsINode& aNode,
|
|
nsTArray<OwningNonNull<nsIContent>>& aOutArrayOfContents,
|
|
size_t aIndexToInsertChildren, const CollectChildrenOptions& aOptions) {
|
|
// FYI: This was moved from
|
|
// https://searchfox.org/mozilla-central/rev/4bce7d85ba4796dd03c5dcc7cfe8eee0e4c07b3b/editor/libeditor/HTMLEditSubActionHandler.cpp#6261
|
|
|
|
size_t numberOfFoundChildren = 0;
|
|
for (nsIContent* content =
|
|
GetFirstChild(aNode, {WalkTreeOption::IgnoreNonEditableNode});
|
|
content; content = content->GetNextSibling()) {
|
|
if ((aOptions.contains(CollectChildrenOption::CollectListChildren) &&
|
|
(HTMLEditUtils::IsAnyListElement(content) ||
|
|
HTMLEditUtils::IsListItem(content))) ||
|
|
(aOptions.contains(CollectChildrenOption::CollectTableChildren) &&
|
|
HTMLEditUtils::IsAnyTableElement(content))) {
|
|
numberOfFoundChildren += HTMLEditUtils::CollectChildren(
|
|
*content, aOutArrayOfContents,
|
|
aIndexToInsertChildren + numberOfFoundChildren, aOptions);
|
|
continue;
|
|
}
|
|
|
|
if (aOptions.contains(CollectChildrenOption::IgnoreNonEditableChildren) &&
|
|
!EditorUtils::IsEditableContent(*content, EditorType::HTML)) {
|
|
continue;
|
|
}
|
|
if (aOptions.contains(CollectChildrenOption::IgnoreInvisibleTextNodes) &&
|
|
content->IsText() &&
|
|
!HTMLEditUtils::IsVisibleTextNode(*content->AsText())) {
|
|
continue;
|
|
}
|
|
aOutArrayOfContents.InsertElementAt(
|
|
aIndexToInsertChildren + numberOfFoundChildren++, *content);
|
|
}
|
|
return numberOfFoundChildren;
|
|
}
|
|
|
|
// static
|
|
size_t HTMLEditUtils::CollectEmptyInlineContainerDescendants(
|
|
const nsINode& aNode,
|
|
nsTArray<OwningNonNull<nsIContent>>& aOutArrayOfContents,
|
|
const EmptyCheckOptions& aOptions, BlockInlineCheck aBlockInlineCheck) {
|
|
size_t numberOfFoundElements = 0;
|
|
for (Element* element = aNode.GetFirstElementChild(); element;) {
|
|
if (HTMLEditUtils::IsEmptyInlineContainer(*element, aOptions,
|
|
aBlockInlineCheck)) {
|
|
aOutArrayOfContents.AppendElement(*element);
|
|
numberOfFoundElements++;
|
|
nsIContent* nextContent = element->GetNextNonChildNode(&aNode);
|
|
element = nullptr;
|
|
for (; nextContent; nextContent = nextContent->GetNextNode(&aNode)) {
|
|
if (nextContent->IsElement()) {
|
|
element = nextContent->AsElement();
|
|
break;
|
|
}
|
|
}
|
|
continue;
|
|
}
|
|
|
|
nsIContent* nextContent = element->GetNextNode(&aNode);
|
|
element = nullptr;
|
|
for (; nextContent; nextContent = nextContent->GetNextNode(&aNode)) {
|
|
if (nextContent->IsElement()) {
|
|
element = nextContent->AsElement();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return numberOfFoundElements;
|
|
}
|
|
|
|
// static
|
|
bool HTMLEditUtils::ElementHasAttributeExcept(const Element& aElement,
|
|
const nsAtom& aAttribute1,
|
|
const nsAtom& aAttribute2,
|
|
const nsAtom& aAttribute3) {
|
|
// FYI: This was moved from
|
|
// https://searchfox.org/mozilla-central/rev/0b1543e85d13c30a13c57e959ce9815a3f0fa1d3/editor/libeditor/HTMLStyleEditor.cpp#1626
|
|
for (auto i : IntegerRange<uint32_t>(aElement.GetAttrCount())) {
|
|
const nsAttrName* name = aElement.GetAttrNameAt(i);
|
|
if (!name->NamespaceEquals(kNameSpaceID_None)) {
|
|
return true;
|
|
}
|
|
|
|
if (name->LocalName() == &aAttribute1 ||
|
|
name->LocalName() == &aAttribute2 ||
|
|
name->LocalName() == &aAttribute3) {
|
|
continue; // Ignore the given attribute
|
|
}
|
|
|
|
// Ignore empty style, class and id attributes because those attributes are
|
|
// not meaningful with empty value.
|
|
if (name->LocalName() == nsGkAtoms::style ||
|
|
name->LocalName() == nsGkAtoms::_class ||
|
|
name->LocalName() == nsGkAtoms::id) {
|
|
if (aElement.HasNonEmptyAttr(name->LocalName())) {
|
|
return true;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
// Ignore special _moz attributes
|
|
nsAutoString attrString;
|
|
name->LocalName()->ToString(attrString);
|
|
if (!StringBeginsWith(attrString, u"_moz"_ns)) {
|
|
return true;
|
|
}
|
|
}
|
|
// if we made it through all of them without finding a real attribute
|
|
// other than aAttribute, then return true
|
|
return false;
|
|
}
|
|
|
|
bool HTMLEditUtils::GetNormalizedHTMLColorValue(const nsAString& aColorValue,
|
|
nsAString& aNormalizedValue) {
|
|
nsAttrValue value;
|
|
if (!value.ParseColor(aColorValue)) {
|
|
aNormalizedValue = aColorValue;
|
|
return false;
|
|
}
|
|
nscolor color = NS_RGB(0, 0, 0);
|
|
MOZ_ALWAYS_TRUE(value.GetColorValue(color));
|
|
aNormalizedValue = NS_ConvertASCIItoUTF16(nsPrintfCString(
|
|
"#%02x%02x%02x", NS_GET_R(color), NS_GET_G(color), NS_GET_B(color)));
|
|
return true;
|
|
}
|
|
|
|
bool HTMLEditUtils::IsSameHTMLColorValue(
|
|
const nsAString& aColorA, const nsAString& aColorB,
|
|
TransparentKeyword aTransparentKeyword) {
|
|
if (aTransparentKeyword == TransparentKeyword::Allowed) {
|
|
const bool isATransparent = aColorA.LowerCaseEqualsLiteral("transparent");
|
|
const bool isBTransparent = aColorB.LowerCaseEqualsLiteral("transparent");
|
|
if (isATransparent || isBTransparent) {
|
|
return isATransparent && isBTransparent;
|
|
}
|
|
}
|
|
nsAttrValue valueA, valueB;
|
|
if (!valueA.ParseColor(aColorA) || !valueB.ParseColor(aColorB)) {
|
|
return false;
|
|
}
|
|
nscolor colorA = NS_RGB(0, 0, 0), colorB = NS_RGB(0, 0, 0);
|
|
MOZ_ALWAYS_TRUE(valueA.GetColorValue(colorA));
|
|
MOZ_ALWAYS_TRUE(valueB.GetColorValue(colorB));
|
|
return colorA == colorB;
|
|
}
|
|
|
|
bool HTMLEditUtils::MaybeCSSSpecificColorValue(const nsAString& aColorValue) {
|
|
if (aColorValue.IsEmpty() || aColorValue.First() == '#') {
|
|
return false; // Quick return for the most cases.
|
|
}
|
|
|
|
nsAutoString colorValue(aColorValue);
|
|
colorValue.CompressWhitespace(true, true);
|
|
if (colorValue.LowerCaseEqualsASCII("transparent")) {
|
|
return true;
|
|
}
|
|
nscolor color = NS_RGB(0, 0, 0);
|
|
if (colorValue.IsEmpty() || colorValue.First() == '#') {
|
|
return false;
|
|
}
|
|
const NS_ConvertUTF16toUTF8 colorU8(colorValue);
|
|
if (Servo_ColorNameToRgb(&colorU8, &color)) {
|
|
return false;
|
|
}
|
|
if (colorValue.LowerCaseEqualsASCII("initial") ||
|
|
colorValue.LowerCaseEqualsASCII("inherit") ||
|
|
colorValue.LowerCaseEqualsASCII("unset") ||
|
|
colorValue.LowerCaseEqualsASCII("revert") ||
|
|
colorValue.LowerCaseEqualsASCII("currentcolor")) {
|
|
return true;
|
|
}
|
|
return ServoCSSParser::IsValidCSSColor(colorU8);
|
|
}
|
|
|
|
static bool ComputeColor(const nsAString& aColorValue, nscolor* aColor,
|
|
bool* aIsCurrentColor) {
|
|
return ServoCSSParser::ComputeColor(nullptr, NS_RGB(0, 0, 0),
|
|
NS_ConvertUTF16toUTF8(aColorValue),
|
|
aColor, aIsCurrentColor);
|
|
}
|
|
|
|
static bool ComputeColor(const nsACString& aColorValue, nscolor* aColor,
|
|
bool* aIsCurrentColor) {
|
|
return ServoCSSParser::ComputeColor(nullptr, NS_RGB(0, 0, 0), aColorValue,
|
|
aColor, aIsCurrentColor);
|
|
}
|
|
|
|
bool HTMLEditUtils::CanConvertToHTMLColorValue(const nsAString& aColorValue) {
|
|
bool isCurrentColor = false;
|
|
nscolor color = NS_RGB(0, 0, 0);
|
|
return ComputeColor(aColorValue, &color, &isCurrentColor) &&
|
|
!isCurrentColor && NS_GET_A(color) == 0xFF;
|
|
}
|
|
|
|
bool HTMLEditUtils::ConvertToNormalizedHTMLColorValue(
|
|
const nsAString& aColorValue, nsAString& aNormalizedValue) {
|
|
bool isCurrentColor = false;
|
|
nscolor color = NS_RGB(0, 0, 0);
|
|
if (!ComputeColor(aColorValue, &color, &isCurrentColor) || isCurrentColor ||
|
|
NS_GET_A(color) != 0xFF) {
|
|
aNormalizedValue = aColorValue;
|
|
return false;
|
|
}
|
|
aNormalizedValue.Truncate();
|
|
aNormalizedValue.AppendPrintf("#%02x%02x%02x", NS_GET_R(color),
|
|
NS_GET_G(color), NS_GET_B(color));
|
|
return true;
|
|
}
|
|
|
|
bool HTMLEditUtils::GetNormalizedCSSColorValue(const nsAString& aColorValue,
|
|
ZeroAlphaColor aZeroAlphaColor,
|
|
nsAString& aNormalizedValue) {
|
|
bool isCurrentColor = false;
|
|
nscolor color = NS_RGB(0, 0, 0);
|
|
if (!ComputeColor(aColorValue, &color, &isCurrentColor)) {
|
|
aNormalizedValue = aColorValue;
|
|
return false;
|
|
}
|
|
|
|
// If it's currentcolor, let's return it as-is since we cannot resolve it
|
|
// without ancestors.
|
|
if (isCurrentColor) {
|
|
aNormalizedValue = aColorValue;
|
|
return true;
|
|
}
|
|
|
|
if (aZeroAlphaColor == ZeroAlphaColor::TransparentKeyword &&
|
|
NS_GET_A(color) == 0) {
|
|
aNormalizedValue.AssignLiteral("transparent");
|
|
return true;
|
|
}
|
|
|
|
// Get serialized color value (i.e., "rgb()" or "rgba()").
|
|
aNormalizedValue.Truncate();
|
|
nsStyleUtil::GetSerializedColorValue(color, aNormalizedValue);
|
|
return true;
|
|
}
|
|
|
|
template <typename CharType>
|
|
bool HTMLEditUtils::IsSameCSSColorValue(const nsTSubstring<CharType>& aColorA,
|
|
const nsTSubstring<CharType>& aColorB) {
|
|
bool isACurrentColor = false;
|
|
nscolor colorA = NS_RGB(0, 0, 0);
|
|
if (!ComputeColor(aColorA, &colorA, &isACurrentColor)) {
|
|
return false;
|
|
}
|
|
bool isBCurrentColor = false;
|
|
nscolor colorB = NS_RGB(0, 0, 0);
|
|
if (!ComputeColor(aColorB, &colorB, &isBCurrentColor)) {
|
|
return false;
|
|
}
|
|
if (isACurrentColor || isBCurrentColor) {
|
|
return isACurrentColor && isBCurrentColor;
|
|
}
|
|
return colorA == colorB;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* SelectedTableCellScanner
|
|
******************************************************************************/
|
|
|
|
SelectedTableCellScanner::SelectedTableCellScanner(
|
|
const AutoRangeArray& aRanges) {
|
|
if (aRanges.Ranges().IsEmpty()) {
|
|
return;
|
|
}
|
|
Element* firstSelectedCellElement =
|
|
HTMLEditUtils::GetTableCellElementIfOnlyOneSelected(
|
|
aRanges.FirstRangeRef());
|
|
if (!firstSelectedCellElement) {
|
|
return; // We're not in table cell selection mode.
|
|
}
|
|
mSelectedCellElements.SetCapacity(aRanges.Ranges().Length());
|
|
mSelectedCellElements.AppendElement(*firstSelectedCellElement);
|
|
for (uint32_t i = 1; i < aRanges.Ranges().Length(); i++) {
|
|
nsRange* range = aRanges.Ranges()[i];
|
|
if (NS_WARN_IF(!range) || NS_WARN_IF(!range->IsPositioned())) {
|
|
continue; // Shouldn't occur in normal conditions.
|
|
}
|
|
// Just ignore selection ranges which do not select only one table
|
|
// cell element. This is possible case if web apps sets multiple
|
|
// selections and first range selects a table cell element.
|
|
if (Element* selectedCellElement =
|
|
HTMLEditUtils::GetTableCellElementIfOnlyOneSelected(*range)) {
|
|
mSelectedCellElements.AppendElement(*selectedCellElement);
|
|
}
|
|
}
|
|
}
|
|
|
|
} // namespace mozilla
|