1 files changed, 164 insertions, 0 deletions
diff --git a/layout/xul/tree/nsTreeContentView.h b/layout/xul/tree/nsTreeContentView.h
new file mode 100644
index 0000000000..30716e6922
--- /dev/null
+++ b/layout/xul/tree/nsTreeContentView.h
@@ -0,0 +1,164 @@
+/* -*- 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 nsTreeContentView_h__
+#define nsTreeContentView_h__
+
+#include "nsCycleCollectionParticipant.h"
+#include "nsTArray.h"
+#include "nsStubDocumentObserver.h"
+#include "nsITreeView.h"
+#include "nsITreeSelection.h"
+#include "nsWrapperCache.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/UniquePtr.h"
+
+class nsSelection;
+class nsTreeColumn;
+class Row;
+
+namespace mozilla {
+class ErrorResult;
+
+namespace dom {
+class DataTransfer;
+class Document;
+class Element;
+class XULTreeElement;
+}  // namespace dom
+}  // namespace mozilla
+
+nsresult NS_NewTreeContentView(nsITreeView** aResult);
+
+class nsTreeContentView final : public nsITreeView,
+                                public nsStubDocumentObserver,
+                                public nsWrapperCache {
+  typedef mozilla::dom::Element Element;
+
+ public:
+  nsTreeContentView(void);
+
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_AMBIGUOUS(nsTreeContentView,
+                                                         nsITreeView)
+
+  virtual JSObject* WrapObject(JSContext* aCx,
+                               JS::Handle<JSObject*> aGivenProto) override;
+  nsISupports* GetParentObject();
+
+  int32_t RowCount() { return mRows.Length(); }
+  nsITreeSelection* GetSelection() { return mSelection; }
+  void SetSelection(nsITreeSelection* aSelection, mozilla::ErrorResult& aError);
+  void GetRowProperties(int32_t aRow, nsAString& aProperties,
+                        mozilla::ErrorResult& aError);
+  void GetCellProperties(int32_t aRow, nsTreeColumn& aColumn,
+                         nsAString& aProperies, mozilla::ErrorResult& aError);
+  void GetColumnProperties(nsTreeColumn& aColumn, nsAString& aProperies);
+  bool IsContainer(int32_t aRow, mozilla::ErrorResult& aError);
+  bool IsContainerOpen(int32_t aRow, mozilla::ErrorResult& aError);
+  bool IsContainerEmpty(int32_t aRow, mozilla::ErrorResult& aError);
+  bool IsSeparator(int32_t aRow, mozilla::ErrorResult& aError);
+  bool IsSorted() { return false; }
+  bool CanDrop(int32_t aRow, int32_t aOrientation,
+               mozilla::dom::DataTransfer* aDataTransfer,
+               mozilla::ErrorResult& aError);
+  void Drop(int32_t aRow, int32_t aOrientation,
+            mozilla::dom::DataTransfer* aDataTransfer,
+            mozilla::ErrorResult& aError);
+  int32_t GetParentIndex(int32_t aRow, mozilla::ErrorResult& aError);
+  bool HasNextSibling(int32_t aRow, int32_t aAfterIndex,
+                      mozilla::ErrorResult& aError);
+  int32_t GetLevel(int32_t aRow, mozilla::ErrorResult& aError);
+  void GetImageSrc(int32_t aRow, nsTreeColumn& aColumn, nsAString& aSrc,
+                   mozilla::ErrorResult& aError);
+  void GetCellValue(int32_t aRow, nsTreeColumn& aColumn, nsAString& aValue,
+                    mozilla::ErrorResult& aError);
+  void GetCellText(int32_t aRow, nsTreeColumn& aColumn, nsAString& aText,
+                   mozilla::ErrorResult& aError);
+  void SetTree(mozilla::dom::XULTreeElement* aTree,
+               mozilla::ErrorResult& aError);
+  void ToggleOpenState(int32_t aRow, mozilla::ErrorResult& aError);
+  void CycleHeader(nsTreeColumn& aColumn, mozilla::ErrorResult& aError);
+  void SelectionChanged() {}
+  void CycleCell(int32_t aRow, nsTreeColumn& aColumn) {}
+  bool IsEditable(int32_t aRow, nsTreeColumn& aColumn,
+                  mozilla::ErrorResult& aError);
+  void SetCellValue(int32_t aRow, nsTreeColumn& aColumn,
+                    const nsAString& aValue, mozilla::ErrorResult& aError);
+  void SetCellText(int32_t aRow, nsTreeColumn& aColumn, const nsAString& aText,
+                   mozilla::ErrorResult& aError);
+  Element* GetItemAtIndex(int32_t aRow, mozilla::ErrorResult& aError);
+  int32_t GetIndexOfItem(Element* aItem);
+
+  NS_DECL_NSITREEVIEW
+
+  // nsIDocumentObserver
+  NS_DECL_NSIMUTATIONOBSERVER_ATTRIBUTECHANGED
+  NS_DECL_NSIMUTATIONOBSERVER_CONTENTAPPENDED
+  NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED
+  NS_DECL_NSIMUTATIONOBSERVER_CONTENTREMOVED
+  NS_DECL_NSIMUTATIONOBSERVER_NODEWILLBEDESTROYED
+
+  static bool CanTrustTreeSelection(nsISupports* aValue);
+
+ protected:
+  ~nsTreeContentView(void);
+
+  // Recursive methods which deal with serializing of nested content.
+  void Serialize(nsIContent* aContent, int32_t aParentIndex, int32_t* aIndex,
+                 nsTArray<mozilla::UniquePtr<Row>>& aRows);
+
+  void SerializeItem(Element* aContent, int32_t aParentIndex, int32_t* aIndex,
+                     nsTArray<mozilla::UniquePtr<Row>>& aRows);
+
+  void SerializeSeparator(Element* aContent, int32_t aParentIndex,
+                          int32_t* aIndex,
+                          nsTArray<mozilla::UniquePtr<Row>>& aRows);
+
+  void GetIndexInSubtree(nsIContent* aContainer, nsIContent* aContent,
+                         int32_t* aResult);
+
+  // Helper methods which we use to manage our plain array of rows.
+  int32_t EnsureSubtree(int32_t aIndex);
+
+  int32_t RemoveSubtree(int32_t aIndex);
+
+  int32_t InsertRow(int32_t aParentIndex, int32_t aIndex, nsIContent* aContent);
+
+  void InsertRowFor(nsIContent* aParent, nsIContent* aChild);
+
+  int32_t RemoveRow(int32_t aIndex);
+
+  void ClearRows();
+
+  void OpenContainer(int32_t aIndex);
+
+  void CloseContainer(int32_t aIndex);
+
+  int32_t FindContent(nsIContent* aContent);
+
+  void UpdateSubtreeSizes(int32_t aIndex, int32_t aCount);
+
+  void UpdateParentIndexes(int32_t aIndex, int32_t aSkip, int32_t aCount);
+
+  bool CanDrop(int32_t aRow, int32_t aOrientation,
+               mozilla::ErrorResult& aError);
+  void Drop(int32_t aRow, int32_t aOrientation, mozilla::ErrorResult& aError);
+
+  // Content helpers.
+  Element* GetCell(nsIContent* aContainer, nsTreeColumn& aCol);
+
+ private:
+  bool IsValidRowIndex(int32_t aRowIndex);
+
+  RefPtr<mozilla::dom::XULTreeElement> mTree;
+  nsCOMPtr<nsITreeSelection> mSelection;
+  nsCOMPtr<nsIContent> mBody;
+  mozilla::dom::Document* mDocument;  // WEAK
+  nsTArray<mozilla::UniquePtr<Row>> mRows;
+};
+
+#endif  // nsTreeContentView_h__