1 files changed, 129 insertions, 0 deletions
diff --git a/dom/xul/XULTreeElement.h b/dom/xul/XULTreeElement.h
new file mode 100644
index 0000000000..381ae88f41
--- /dev/null
+++ b/dom/xul/XULTreeElement.h
@@ -0,0 +1,129 @@
+/* -*- 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 XULTreeElement_h__
+#define XULTreeElement_h__
+
+#include "mozilla/Attributes.h"
+#include "nsCycleCollectionParticipant.h"
+#include "nsWrapperCache.h"
+#include "nsString.h"
+#include "nsXULElement.h"
+#include "nsITreeView.h"
+
+class nsTreeBodyFrame;
+class nsTreeColumn;
+class nsTreeColumns;
+
+namespace mozilla {
+class ErrorResult;
+
+namespace dom {
+
+struct TreeCellInfo;
+class DOMRect;
+enum class CallerType : uint32_t;
+
+class XULTreeElement final : public nsXULElement {
+ public:
+  explicit XULTreeElement(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
+      : nsXULElement(std::move(aNodeInfo)),
+        mCachedFirstVisibleRow(0),
+        mTreeBody(nullptr) {}
+
+  NS_IMPL_FROMNODE_WITH_TAG(XULTreeElement, kNameSpaceID_XUL, tree)
+
+  NS_DECL_ISUPPORTS_INHERITED
+  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(XULTreeElement, nsXULElement)
+
+  nsTreeBodyFrame* GetTreeBodyFrame(FlushType = FlushType::Frames);
+  nsTreeBodyFrame* GetCachedTreeBodyFrame() { return mTreeBody; }
+
+  already_AddRefed<nsTreeColumns> GetColumns(FlushType = FlushType::Frames);
+
+  already_AddRefed<nsITreeView> GetView(CallerType /* unused */) {
+    return GetView();
+  }
+  already_AddRefed<nsITreeView> GetView(FlushType = FlushType::Frames);
+
+  void SetView(nsITreeView* arg, CallerType aCallerType, ErrorResult& aRv);
+
+  bool Focused();
+
+  already_AddRefed<Element> GetTreeBody();
+
+  int32_t RowHeight();
+
+  int32_t RowWidth();
+
+  int32_t HorizontalPosition();
+
+  void EnsureCellIsVisible(int32_t row, nsTreeColumn* col, ErrorResult& aRv);
+
+  void ScrollToRow(int32_t aRow);
+
+  void ScrollByLines(int32_t aNumLines);
+
+  void ScrollByPages(int32_t aNumPages);
+
+  int32_t GetFirstVisibleRow();
+
+  int32_t GetLastVisibleRow();
+
+  int32_t GetPageLength();
+
+  int32_t GetRowAt(int32_t x, int32_t y);
+
+  void GetCellAt(int32_t x, int32_t y, TreeCellInfo& aRetVal, ErrorResult& aRv);
+
+  nsIntRect GetCoordsForCellItem(int32_t aRow, nsTreeColumn* aCol,
+                                 const nsAString& aElement, nsresult& rv);
+  already_AddRefed<DOMRect> GetCoordsForCellItem(int32_t row, nsTreeColumn& col,
+                                                 const nsAString& element,
+                                                 ErrorResult& aRv);
+
+  bool IsCellCropped(int32_t row, nsTreeColumn* col, ErrorResult& aRv);
+
+  void RemoveImageCacheEntry(int32_t row, nsTreeColumn& col, ErrorResult& aRv);
+
+  void SetFocused(bool aFocused);
+  void EnsureRowIsVisible(int32_t index);
+  void Invalidate(void);
+  void InvalidateColumn(nsTreeColumn* col);
+  void InvalidateRow(int32_t index);
+  void InvalidateCell(int32_t row, nsTreeColumn* col);
+  void InvalidateRange(int32_t startIndex, int32_t endIndex);
+  void RowCountChanged(int32_t index, int32_t count);
+  void BeginUpdateBatch(void);
+  void EndUpdateBatch(void);
+  void ClearStyleAndImageCaches(void);
+
+  virtual void UnbindFromTree(bool aNullParent) override;
+  virtual void DestroyContent() override;
+
+  void BodyDestroyed(int32_t aFirstVisibleRow) {
+    mTreeBody = nullptr;
+    mCachedFirstVisibleRow = aFirstVisibleRow;
+  }
+
+  int32_t GetCachedTopVisibleRow() { return mCachedFirstVisibleRow; }
+
+ protected:
+  int32_t mCachedFirstVisibleRow;
+
+  nsTreeBodyFrame* mTreeBody;
+  nsCOMPtr<nsITreeView> mView;
+
+  virtual ~XULTreeElement() = default;
+
+  JSObject* WrapNode(JSContext* aCx,
+                     JS::Handle<JSObject*> aGivenProto) override;
+};
+
+}  // namespace dom
+}  // namespace mozilla
+
+#endif