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Diffstat (limited to 'editor/libeditor/HTMLEditHelpers.cpp')
| -rw-r--r-- | editor/libeditor/HTMLEditHelpers.cpp | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/editor/libeditor/HTMLEditHelpers.cpp b/editor/libeditor/HTMLEditHelpers.cpp new file mode 100644 index 0000000000..cb1f93795c --- /dev/null +++ b/editor/libeditor/HTMLEditHelpers.cpp @@ -0,0 +1,174 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "HTMLEditHelpers.h" + +#include "CSSEditUtils.h" +#include "EditorDOMPoint.h" +#include "HTMLEditor.h" +#include "PendingStyles.h" +#include "WSRunObject.h" + +#include "mozilla/ContentIterator.h" +#include "mozilla/OwningNonNull.h" +#include "mozilla/dom/HTMLBRElement.h" +#include "mozilla/dom/Text.h" +#include "nsIContent.h" +#include "nsINode.h" +#include "nsRange.h" + +class nsISupports; + +namespace mozilla { + +using namespace dom; + +template void DOMIterator::AppendAllNodesToArray( + nsTArray<OwningNonNull<nsIContent>>& aArrayOfNodes) const; +template void DOMIterator::AppendAllNodesToArray( + nsTArray<OwningNonNull<HTMLBRElement>>& aArrayOfNodes) const; +template void DOMIterator::AppendNodesToArray( + BoolFunctor aFunctor, nsTArray<OwningNonNull<nsIContent>>& aArrayOfNodes, + void* aClosure) const; +template void DOMIterator::AppendNodesToArray( + BoolFunctor aFunctor, nsTArray<OwningNonNull<Element>>& aArrayOfNodes, + void* aClosure) const; +template void DOMIterator::AppendNodesToArray( + BoolFunctor aFunctor, nsTArray<OwningNonNull<Text>>& aArrayOfNodes, + void* aClosure) const; + +/****************************************************************************** + * some helper classes for iterating the dom tree + *****************************************************************************/ + +DOMIterator::DOMIterator(nsINode& aNode) : mIter(&mPostOrderIter) { + DebugOnly<nsresult> rv = mIter->Init(&aNode); + MOZ_ASSERT(NS_SUCCEEDED(rv)); +} + +nsresult DOMIterator::Init(nsRange& aRange) { return mIter->Init(&aRange); } + +nsresult DOMIterator::Init(const RawRangeBoundary& aStartRef, + const RawRangeBoundary& aEndRef) { + return mIter->Init(aStartRef, aEndRef); +} + +DOMIterator::DOMIterator() : mIter(&mPostOrderIter) {} + +template <class NodeClass> +void DOMIterator::AppendAllNodesToArray( + nsTArray<OwningNonNull<NodeClass>>& aArrayOfNodes) const { + for (; !mIter->IsDone(); mIter->Next()) { + if (NodeClass* node = NodeClass::FromNode(mIter->GetCurrentNode())) { + aArrayOfNodes.AppendElement(*node); + } + } +} + +template <class NodeClass> +void DOMIterator::AppendNodesToArray( + BoolFunctor aFunctor, nsTArray<OwningNonNull<NodeClass>>& aArrayOfNodes, + void* aClosure /* = nullptr */) const { + for (; !mIter->IsDone(); mIter->Next()) { + NodeClass* node = NodeClass::FromNode(mIter->GetCurrentNode()); + if (node && aFunctor(*node, aClosure)) { + aArrayOfNodes.AppendElement(*node); + } + } +} + +DOMSubtreeIterator::DOMSubtreeIterator() { mIter = &mSubtreeIter; } + +nsresult DOMSubtreeIterator::Init(nsRange& aRange) { + return mIter->Init(&aRange); +} + +/****************************************************************************** + * mozilla::EditorElementStyle + *****************************************************************************/ + +bool EditorElementStyle::IsCSSSettable(const nsStaticAtom& aTagName) const { + return CSSEditUtils::IsCSSEditableStyle(aTagName, *this); +} + +bool EditorElementStyle::IsCSSSettable(const Element& aElement) const { + return CSSEditUtils::IsCSSEditableStyle(aElement, *this); +} + +bool EditorElementStyle::IsCSSRemovable(const nsStaticAtom& aTagName) const { + // <font size> cannot be applied with CSS font-size for now, but it should be + // removable. + return EditorElementStyle::IsCSSSettable(aTagName) || + (IsInlineStyle() && AsInlineStyle().IsStyleOfFontSize()); +} + +bool EditorElementStyle::IsCSSRemovable(const Element& aElement) const { + // <font size> cannot be applied with CSS font-size for now, but it should be + // removable. + return EditorElementStyle::IsCSSSettable(aElement) || + (IsInlineStyle() && AsInlineStyle().IsStyleOfFontSize()); +} + +/****************************************************************************** + * mozilla::EditorInlineStyle + *****************************************************************************/ + +PendingStyleCache EditorInlineStyle::ToPendingStyleCache( + nsAString&& aValue) const { + return PendingStyleCache(*mHTMLProperty, + mAttribute ? mAttribute->AsStatic() : nullptr, + std::move(aValue)); +} + +bool EditorInlineStyle::IsRepresentedBy(const nsIContent& aContent) const { + MOZ_ASSERT(!IsStyleToClearAllInlineStyles()); + + if (!aContent.IsHTMLElement()) { + return false; + } + const Element& element = *aContent.AsElement(); + if (mHTMLProperty == element.NodeInfo()->NameAtom() || + mHTMLProperty == GetSimilarElementNameAtom()) { + // <a> cannot be nested. Therefore, if we're the style of <a>, we should + // treat existing it even if the attribute does not match. + if (mHTMLProperty == nsGkAtoms::a) { + return true; + } + return !mAttribute || element.HasAttr(mAttribute); + } + // Special case for linking or naming an <a> element. + if ((mHTMLProperty == nsGkAtoms::href && HTMLEditUtils::IsLink(&element)) || + (mHTMLProperty == nsGkAtoms::name && + HTMLEditUtils::IsNamedAnchor(&element))) { + return true; + } + // If the style is font size, it's also represented by <big> or <small>. + if (mHTMLProperty == nsGkAtoms::font && mAttribute == nsGkAtoms::size && + aContent.IsAnyOfHTMLElements(nsGkAtoms::big, nsGkAtoms::small)) { + return true; + } + return false; +} + +Result<bool, nsresult> EditorInlineStyle::IsSpecifiedBy( + const HTMLEditor& aHTMLEditor, Element& aElement) const { + MOZ_ASSERT(!IsStyleToClearAllInlineStyles()); + if (!IsCSSSettable(aElement) && !IsCSSRemovable(aElement)) { + return false; + } + // Special case in the CSS mode. We should treat <u>, <s>, <strike>, <ins> + // and <del> specifies text-decoration (bug 1802668). + if (aHTMLEditor.IsCSSEnabled() && + IsStyleOfTextDecoration(IgnoreSElement::No) && + aElement.IsAnyOfHTMLElements(nsGkAtoms::u, nsGkAtoms::s, + nsGkAtoms::strike, nsGkAtoms::ins, + nsGkAtoms::del)) { + return true; + } + return CSSEditUtils::HaveSpecifiedCSSEquivalentStyles(aHTMLEditor, aElement, + *this); +} + +} // namespace mozilla |