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-rw-r--r--layout/style/TimelineManager.h84
1 files changed, 84 insertions, 0 deletions
diff --git a/layout/style/TimelineManager.h b/layout/style/TimelineManager.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 mozilla_TimelineManager_h
+#define mozilla_TimelineManager_h
+
+#include "mozilla/Assertions.h"
+#include "mozilla/LinkedList.h"
+#include "mozilla/TimelineCollection.h"
+#include "nsStyleAutoArray.h"
+
+class nsPresContext;
+
+namespace mozilla {
+class ComputedStyle;
+enum class PseudoStyleType : uint8_t;
+
+namespace dom {
+class Element;
+class ScrollTimeline;
+class ViewTimeline;
+} // namespace dom
+
+class TimelineManager {
+ public:
+ explicit TimelineManager(nsPresContext* aPresContext)
+ : mPresContext(aPresContext) {}
+
+ ~TimelineManager() {
+ MOZ_ASSERT(!mPresContext, "Disconnect should have been called");
+ }
+
+ void Disconnect() {
+ while (auto* head = mScrollTimelineCollections.getFirst()) {
+ head->Destroy();
+ }
+ while (auto* head = mViewTimelineCollections.getFirst()) {
+ head->Destroy();
+ }
+
+ mPresContext = nullptr;
+ }
+
+ enum class ProgressTimelineType : uint8_t {
+ Scroll,
+ View,
+ };
+ void UpdateTimelines(dom::Element* aElement, PseudoStyleType aPseudoType,
+ const ComputedStyle* aComputedStyle,
+ ProgressTimelineType aType);
+
+ private:
+ template <typename StyleType, typename TimelineType>
+ void DoUpdateTimelines(nsPresContext* aPresContext, dom::Element* aElement,
+ PseudoStyleType aPseudoType,
+ const nsStyleAutoArray<StyleType>& aStyleTimelines,
+ size_t aTimelineCount);
+
+ template <typename T>
+ void AddTimelineCollection(TimelineCollection<T>* aCollection);
+
+ LinkedList<TimelineCollection<dom::ScrollTimeline>>
+ mScrollTimelineCollections;
+ LinkedList<TimelineCollection<dom::ViewTimeline>> mViewTimelineCollections;
+ nsPresContext* mPresContext;
+};
+
+template <>
+inline void TimelineManager::AddTimelineCollection(
+ TimelineCollection<dom::ScrollTimeline>* aCollection) {
+ mScrollTimelineCollections.insertBack(aCollection);
+}
+
+template <>
+inline void TimelineManager::AddTimelineCollection(
+ TimelineCollection<dom::ViewTimeline>* aCollection) {
+ mViewTimelineCollections.insertBack(aCollection);
+}
+
+} // namespace mozilla
+
+#endif // mozilla_TimelineManager_h