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-rw-r--r--dom/base/GeneratedImageContent.h74
1 files changed, 74 insertions, 0 deletions
diff --git a/dom/base/GeneratedImageContent.h b/dom/base/GeneratedImageContent.h
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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/. */
+
+#ifndef dom_base_GeneratedImageContent_h
+#define dom_base_GeneratedImageContent_h
+
+/* A content node that keeps track of an index in the parent's `content`
+ * property value, used for url() values in the content of a ::before or ::after
+ * pseudo-element. */
+
+#include "mozilla/dom/HTMLElementBinding.h"
+#include "mozilla/dom/NameSpaceConstants.h"
+#include "mozilla/dom/NodeInfo.h"
+#include "nsGenericHTMLElement.h"
+
+namespace mozilla::dom {
+
+class GeneratedImageContent final : public nsGenericHTMLElement {
+ public:
+ static already_AddRefed<GeneratedImageContent> Create(Document&,
+ uint32_t aContentIndex);
+ // An image created from 'list-style-image' for a ::marker pseudo.
+ static already_AddRefed<GeneratedImageContent> CreateForListStyleImage(
+ Document&);
+
+ explicit GeneratedImageContent(already_AddRefed<dom::NodeInfo>&& aNodeInfo)
+ : nsGenericHTMLElement(std::move(aNodeInfo)) {
+ MOZ_ASSERT(IsInNamespace(kNameSpaceID_XHTML),
+ "Someone messed up our nodeinfo");
+ }
+
+ ElementState IntrinsicState() const override {
+ ElementState state = nsGenericHTMLElement::IntrinsicState();
+ if (mBroken) {
+ state |= ElementState::BROKEN;
+ }
+ return state;
+ }
+ nsresult Clone(dom::NodeInfo* aNodeInfo, nsINode** aResult) const final;
+
+ nsresult CopyInnerTo(GeneratedImageContent* aDest) {
+ nsresult rv = nsGenericHTMLElement::CopyInnerTo(aDest);
+ NS_ENSURE_SUCCESS(rv, rv);
+ aDest->mIndex = mIndex;
+ return NS_OK;
+ }
+
+ // Is this an image created from 'list-style-image'?
+ bool IsForListStyleImageMarker() const { return Index() == uint32_t(-1); }
+
+ // @note we use -1 for images created from 'list-style-image'
+ uint32_t Index() const { return mIndex; }
+
+ // Notify this image failed to load.
+ void NotifyLoadFailed() {
+ mBroken = true;
+ UpdateState(true);
+ }
+
+ protected:
+ JSObject* WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) final;
+
+ private:
+ virtual ~GeneratedImageContent() = default;
+ uint32_t mIndex = 0;
+ bool mBroken = false;
+};
+
+} // namespace mozilla::dom
+
+#endif // dom_base_GeneratedImageContent_h