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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /dom/base/nsTextNode.cpp
parentInitial commit. (diff)
downloadfirefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz
firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'dom/base/nsTextNode.cpp')
-rw-r--r--dom/base/nsTextNode.cpp246
1 files changed, 246 insertions, 0 deletions
diff --git a/dom/base/nsTextNode.cpp b/dom/base/nsTextNode.cpp
new file mode 100644
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+/*
+ * Implementation of DOM Core's Text node.
+ */
+
+#include "nsTextNode.h"
+#include "mozilla/dom/TextBinding.h"
+#include "nsContentUtils.h"
+#include "mozilla/dom/DirectionalityUtils.h"
+#include "mozilla/dom/Document.h"
+#include "nsThreadUtils.h"
+#include "nsStubMutationObserver.h"
+#include "mozilla/IntegerPrintfMacros.h"
+#ifdef MOZ_DOM_LIST
+# include "nsRange.h"
+#endif
+
+using namespace mozilla;
+using namespace mozilla::dom;
+
+/**
+ * class used to implement attr() generated content
+ */
+class nsAttributeTextNode final : public nsTextNode,
+ public nsStubMutationObserver {
+ public:
+ NS_DECL_ISUPPORTS_INHERITED
+
+ nsAttributeTextNode(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
+ int32_t aNameSpaceID, nsAtom* aAttrName)
+ : nsTextNode(std::move(aNodeInfo)),
+ mGrandparent(nullptr),
+ mNameSpaceID(aNameSpaceID),
+ mAttrName(aAttrName) {
+ NS_ASSERTION(mNameSpaceID != kNameSpaceID_Unknown, "Must know namespace");
+ NS_ASSERTION(mAttrName, "Must have attr name");
+ }
+
+ virtual nsresult BindToTree(BindContext&, nsINode& aParent) override;
+ virtual void UnbindFromTree(bool aNullParent = true) override;
+
+ NS_DECL_NSIMUTATIONOBSERVER_ATTRIBUTECHANGED
+ NS_DECL_NSIMUTATIONOBSERVER_NODEWILLBEDESTROYED
+
+ virtual already_AddRefed<CharacterData> CloneDataNode(
+ mozilla::dom::NodeInfo* aNodeInfo, bool aCloneText) const override {
+ RefPtr<nsAttributeTextNode> it = new (aNodeInfo->NodeInfoManager())
+ nsAttributeTextNode(do_AddRef(aNodeInfo), mNameSpaceID, mAttrName);
+ if (aCloneText) {
+ it->mText = mText;
+ }
+
+ return it.forget();
+ }
+
+ // Public method for the event to run
+ void UpdateText() { UpdateText(true); }
+
+ private:
+ virtual ~nsAttributeTextNode() {
+ NS_ASSERTION(!mGrandparent, "We were not unbound!");
+ }
+
+ // Update our text to our parent's current attr value
+ void UpdateText(bool aNotify);
+
+ // This doesn't need to be a strong pointer because it's only non-null
+ // while we're bound to the document tree, and it points to an ancestor
+ // so the ancestor must be bound to the document tree the whole time
+ // and can't be deleted.
+ Element* mGrandparent;
+ // What attribute we're showing
+ int32_t mNameSpaceID;
+ RefPtr<nsAtom> mAttrName;
+};
+
+nsTextNode::~nsTextNode() = default;
+
+// Use the CC variant of this, even though this class does not define
+// a new CC participant, to make QIing to the CC interfaces faster.
+NS_IMPL_ISUPPORTS_CYCLE_COLLECTION_INHERITED_0(nsTextNode, CharacterData)
+
+JSObject* nsTextNode::WrapNode(JSContext* aCx,
+ JS::Handle<JSObject*> aGivenProto) {
+ return Text_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+already_AddRefed<CharacterData> nsTextNode::CloneDataNode(
+ mozilla::dom::NodeInfo* aNodeInfo, bool aCloneText) const {
+ RefPtr<nsTextNode> it =
+ new (aNodeInfo->NodeInfoManager()) nsTextNode(do_AddRef(aNodeInfo));
+ if (aCloneText) {
+ it->mText = mText;
+ }
+
+ return it.forget();
+}
+
+nsresult nsTextNode::AppendTextForNormalize(const char16_t* aBuffer,
+ uint32_t aLength, bool aNotify,
+ nsIContent* aNextSibling) {
+ CharacterDataChangeInfo::Details details = {
+ CharacterDataChangeInfo::Details::eMerge, aNextSibling};
+ return SetTextInternal(mText.GetLength(), 0, aBuffer, aLength, aNotify,
+ &details);
+}
+
+nsresult nsTextNode::BindToTree(BindContext& aContext, nsINode& aParent) {
+ nsresult rv = CharacterData::BindToTree(aContext, aParent);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ SetDirectionFromNewTextNode(this);
+
+ return NS_OK;
+}
+
+void nsTextNode::UnbindFromTree(bool aNullParent) {
+ ResetDirectionSetByTextNode(this);
+
+ CharacterData::UnbindFromTree(aNullParent);
+}
+
+#ifdef MOZ_DOM_LIST
+void nsTextNode::List(FILE* out, int32_t aIndent) const {
+ int32_t index;
+ for (index = aIndent; --index >= 0;) fputs(" ", out);
+
+ fprintf(out, "Text@%p", static_cast<const void*>(this));
+ fprintf(out, " flags=[%08x]", static_cast<unsigned int>(GetFlags()));
+ if (IsClosestCommonInclusiveAncestorForRangeInSelection()) {
+ const LinkedList<AbstractRange>* ranges =
+ GetExistingClosestCommonInclusiveAncestorRanges();
+ uint32_t count = ranges ? ranges->length() : 0;
+ fprintf(out, " ranges:%d", count);
+ }
+ fprintf(out, " primaryframe=%p", static_cast<void*>(GetPrimaryFrame()));
+ fprintf(out, " refcount=%" PRIuPTR "<", mRefCnt.get());
+
+ nsAutoString tmp;
+ ToCString(tmp, 0, mText.GetLength());
+ fputs(NS_LossyConvertUTF16toASCII(tmp).get(), out);
+
+ fputs(">\n", out);
+}
+
+void nsTextNode::DumpContent(FILE* out, int32_t aIndent, bool aDumpAll) const {
+ if (aDumpAll) {
+ int32_t index;
+ for (index = aIndent; --index >= 0;) fputs(" ", out);
+
+ nsAutoString tmp;
+ ToCString(tmp, 0, mText.GetLength());
+
+ if (!tmp.EqualsLiteral("\\n")) {
+ fputs(NS_LossyConvertUTF16toASCII(tmp).get(), out);
+ if (aIndent) fputs("\n", out);
+ }
+ }
+}
+#endif
+
+nsresult NS_NewAttributeContent(nsNodeInfoManager* aNodeInfoManager,
+ int32_t aNameSpaceID, nsAtom* aAttrName,
+ nsIContent** aResult) {
+ MOZ_ASSERT(aNodeInfoManager, "Missing nodeInfoManager");
+ MOZ_ASSERT(aAttrName, "Must have an attr name");
+ MOZ_ASSERT(aNameSpaceID != kNameSpaceID_Unknown, "Must know namespace");
+
+ *aResult = nullptr;
+
+ RefPtr<mozilla::dom::NodeInfo> ni = aNodeInfoManager->GetTextNodeInfo();
+
+ RefPtr<nsAttributeTextNode> textNode = new (aNodeInfoManager)
+ nsAttributeTextNode(ni.forget(), aNameSpaceID, aAttrName);
+ textNode.forget(aResult);
+
+ return NS_OK;
+}
+
+NS_IMPL_ISUPPORTS_INHERITED(nsAttributeTextNode, nsTextNode,
+ nsIMutationObserver)
+
+nsresult nsAttributeTextNode::BindToTree(BindContext& aContext,
+ nsINode& aParent) {
+ MOZ_ASSERT(aParent.IsContent() && aParent.GetParent(),
+ "This node can't be a child of the document or of "
+ "the document root");
+
+ nsresult rv = nsTextNode::BindToTree(aContext, aParent);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ NS_ASSERTION(!mGrandparent, "We were already bound!");
+ mGrandparent = aParent.GetParent()->AsElement();
+ mGrandparent->AddMutationObserver(this);
+
+ // Note that there is no need to notify here, since we have no
+ // frame yet at this point.
+ UpdateText(false);
+
+ return NS_OK;
+}
+
+void nsAttributeTextNode::UnbindFromTree(bool aNullParent) {
+ // UnbindFromTree can be called anytime so we have to be safe.
+ if (mGrandparent) {
+ // aNullParent might not be true here, but we want to remove the
+ // mutation observer anyway since we only need it while we're
+ // in the document.
+ mGrandparent->RemoveMutationObserver(this);
+ mGrandparent = nullptr;
+ }
+ nsTextNode::UnbindFromTree(aNullParent);
+}
+
+void nsAttributeTextNode::AttributeChanged(Element* aElement,
+ int32_t aNameSpaceID,
+ nsAtom* aAttribute, int32_t aModType,
+ const nsAttrValue* aOldValue) {
+ if (aNameSpaceID == mNameSpaceID && aAttribute == mAttrName &&
+ aElement == mGrandparent) {
+ // Since UpdateText notifies, do it when it's safe to run script. Note
+ // that if we get unbound while the event is up that's ok -- we'll just
+ // have no grandparent when it fires, and will do nothing.
+ void (nsAttributeTextNode::*update)() = &nsAttributeTextNode::UpdateText;
+ nsContentUtils::AddScriptRunner(NewRunnableMethod(
+ "nsAttributeTextNode::AttributeChanged", this, update));
+ }
+}
+
+void nsAttributeTextNode::NodeWillBeDestroyed(nsINode* aNode) {
+ NS_ASSERTION(aNode == static_cast<nsINode*>(mGrandparent), "Wrong node!");
+ mGrandparent = nullptr;
+}
+
+void nsAttributeTextNode::UpdateText(bool aNotify) {
+ if (mGrandparent) {
+ nsAutoString attrValue;
+ mGrandparent->GetAttr(mNameSpaceID, mAttrName, attrValue);
+ SetText(attrValue, aNotify);
+ }
+}