XULTreeElement.h - mozsearch

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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 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(UnbindContext&) 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