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convert MOZ_OVERRIDE override
convert MOZ_FINAL final
283 lines
8.5 KiB
C++
283 lines
8.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_a11y_XULTreeAccessible_h__
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#define mozilla_a11y_XULTreeAccessible_h__
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#include "nsITreeBoxObject.h"
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#include "nsITreeView.h"
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#include "nsITreeColumns.h"
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#include "XULListboxAccessible.h"
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class nsTreeBodyFrame;
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namespace mozilla {
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namespace a11y {
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class XULTreeGridCellAccessible;
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/*
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* A class the represents the XUL Tree widget.
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*/
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const uint32_t kMaxTreeColumns = 100;
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const uint32_t kDefaultTreeCacheLength = 128;
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/**
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* Accessible class for XUL tree element.
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*/
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class XULTreeAccessible : public AccessibleWrap
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{
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public:
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XULTreeAccessible(nsIContent* aContent, DocAccessible* aDoc,
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nsTreeBodyFrame* aTreeframe);
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// nsISupports and cycle collection
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(XULTreeAccessible, Accessible)
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// Accessible
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virtual void Shutdown() override;
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virtual void Value(nsString& aValue) override;
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virtual a11y::role NativeRole() override;
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virtual uint64_t NativeState() override;
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virtual Accessible* ChildAtPoint(int32_t aX, int32_t aY,
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EWhichChildAtPoint aWhichChild) override;
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virtual Accessible* GetChildAt(uint32_t aIndex) const override;
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virtual uint32_t ChildCount() const override;
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virtual Relation RelationByType(RelationType aType) override;
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// SelectAccessible
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virtual void SelectedItems(nsTArray<Accessible*>* aItems) override;
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virtual uint32_t SelectedItemCount() override;
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virtual Accessible* GetSelectedItem(uint32_t aIndex) override;
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virtual bool IsItemSelected(uint32_t aIndex) override;
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virtual bool AddItemToSelection(uint32_t aIndex) override;
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virtual bool RemoveItemFromSelection(uint32_t aIndex) override;
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virtual bool SelectAll() override;
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virtual bool UnselectAll() override;
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// Widgets
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virtual bool IsWidget() const override;
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virtual bool IsActiveWidget() const override;
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virtual bool AreItemsOperable() const override;
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virtual Accessible* CurrentItem() override;
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virtual void SetCurrentItem(Accessible* aItem) override;
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virtual Accessible* ContainerWidget() const override;
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// XULTreeAccessible
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/**
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* Return tree item accessible at the givem row. If accessible doesn't exist
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* in the cache then create and cache it.
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*
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* @param aRow [in] the given row index
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*/
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Accessible* GetTreeItemAccessible(int32_t aRow) const;
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/**
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* Invalidates the number of cached treeitem accessibles.
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*
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* @param aRow [in] row index the invalidation starts from
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* @param aCount [in] the number of treeitem accessibles to invalidate,
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* the number sign specifies whether rows have been
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* inserted (plus) or removed (minus)
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*/
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void InvalidateCache(int32_t aRow, int32_t aCount);
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/**
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* Fires name change events for invalidated area of tree.
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*
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* @param aStartRow [in] row index invalidation starts from
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* @param aEndRow [in] row index invalidation ends, -1 means last row index
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* @param aStartCol [in] column index invalidation starts from
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* @param aEndCol [in] column index invalidation ends, -1 mens last column
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* index
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*/
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void TreeViewInvalidated(int32_t aStartRow, int32_t aEndRow,
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int32_t aStartCol, int32_t aEndCol);
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/**
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* Invalidates children created for previous tree view.
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*/
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void TreeViewChanged(nsITreeView* aView);
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protected:
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virtual ~XULTreeAccessible();
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/**
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* Creates tree item accessible for the given row index.
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*/
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virtual already_AddRefed<Accessible>
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CreateTreeItemAccessible(int32_t aRow) const;
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nsCOMPtr<nsITreeBoxObject> mTree;
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nsITreeView* mTreeView;
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mutable AccessibleHashtable mAccessibleCache;
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};
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/**
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* Base class for tree item accessibles.
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*/
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#define XULTREEITEMBASEACCESSIBLE_IMPL_CID \
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{ /* 1ab79ae7-766a-443c-940b-b1e6b0831dfc */ \
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0x1ab79ae7, \
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0x766a, \
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0x443c, \
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{ 0x94, 0x0b, 0xb1, 0xe6, 0xb0, 0x83, 0x1d, 0xfc } \
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}
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class XULTreeItemAccessibleBase : public AccessibleWrap
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{
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public:
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XULTreeItemAccessibleBase(nsIContent* aContent, DocAccessible* aDoc,
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Accessible* aParent, nsITreeBoxObject* aTree,
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nsITreeView* aTreeView, int32_t aRow);
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// nsISupports and cycle collection
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(XULTreeItemAccessibleBase,
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AccessibleWrap)
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// Accessible
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virtual void Shutdown() override;
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virtual nsIntRect Bounds() const override;
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virtual GroupPos GroupPosition() override;
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virtual uint64_t NativeState() override;
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virtual uint64_t NativeInteractiveState() const override;
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virtual int32_t IndexInParent() const override;
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virtual Relation RelationByType(RelationType aType) override;
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virtual Accessible* FocusedChild() override;
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virtual void SetSelected(bool aSelect) override;
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virtual void TakeFocus() override;
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// ActionAccessible
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virtual uint8_t ActionCount() override;
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virtual void ActionNameAt(uint8_t aIndex, nsAString& aName) override;
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virtual bool DoAction(uint8_t aIndex) override;
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// Widgets
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virtual Accessible* ContainerWidget() const override;
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// XULTreeItemAccessibleBase
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NS_DECLARE_STATIC_IID_ACCESSOR(XULTREEITEMBASEACCESSIBLE_IMPL_CID)
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/**
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* Return row index associated with the accessible.
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*/
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int32_t GetRowIndex() const { return mRow; }
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/**
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* Return cell accessible for the given column. If XUL tree accessible is not
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* accessible table then return null.
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*/
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virtual XULTreeGridCellAccessible* GetCellAccessible(nsITreeColumn* aColumn) const
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{ return nullptr; }
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/**
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* Proccess row invalidation. Used to fires name change events.
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*/
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virtual void RowInvalidated(int32_t aStartColIdx, int32_t aEndColIdx) = 0;
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protected:
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virtual ~XULTreeItemAccessibleBase();
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enum { eAction_Click = 0, eAction_Expand = 1 };
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// Accessible
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virtual void DispatchClickEvent(nsIContent *aContent, uint32_t aActionIndex) override;
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virtual Accessible* GetSiblingAtOffset(int32_t aOffset,
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nsresult *aError = nullptr) const override;
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// XULTreeItemAccessibleBase
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/**
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* Return true if the tree item accessible is expandable (contains subrows).
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*/
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bool IsExpandable();
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/**
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* Return name for cell at the given column.
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*/
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void GetCellName(nsITreeColumn* aColumn, nsAString& aName);
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nsCOMPtr<nsITreeBoxObject> mTree;
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nsITreeView* mTreeView;
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int32_t mRow;
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};
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NS_DEFINE_STATIC_IID_ACCESSOR(XULTreeItemAccessibleBase,
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XULTREEITEMBASEACCESSIBLE_IMPL_CID)
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/**
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* Accessible class for items for XUL tree.
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*/
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class XULTreeItemAccessible : public XULTreeItemAccessibleBase
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{
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public:
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XULTreeItemAccessible(nsIContent* aContent, DocAccessible* aDoc,
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Accessible* aParent, nsITreeBoxObject* aTree,
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nsITreeView* aTreeView, int32_t aRow);
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// nsISupports and cycle collection
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(XULTreeItemAccessible,
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XULTreeItemAccessibleBase)
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// Accessible
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virtual void Shutdown() override;
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virtual ENameValueFlag Name(nsString& aName) override;
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virtual a11y::role NativeRole() override;
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// XULTreeItemAccessibleBase
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virtual void RowInvalidated(int32_t aStartColIdx, int32_t aEndColIdx) override;
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protected:
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virtual ~XULTreeItemAccessible();
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// Accessible
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virtual void CacheChildren() override;
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// XULTreeItemAccessible
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nsCOMPtr<nsITreeColumn> mColumn;
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nsString mCachedName;
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};
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/**
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* Accessible class for columns element of XUL tree.
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*/
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class XULTreeColumAccessible : public XULColumAccessible
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{
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public:
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XULTreeColumAccessible(nsIContent* aContent, DocAccessible* aDoc);
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protected:
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// Accessible
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virtual Accessible* GetSiblingAtOffset(int32_t aOffset,
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nsresult* aError = nullptr) const
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override;
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};
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////////////////////////////////////////////////////////////////////////////////
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// Accessible downcasting method
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inline XULTreeAccessible*
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Accessible::AsXULTree()
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{
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return IsXULTree() ? static_cast<XULTreeAccessible*>(this) : nullptr;
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}
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} // namespace a11y
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} // namespace mozilla
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#endif
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