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tenfourfox/accessible/ipc/ProxyAccessible.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=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_a11y_ProxyAccessible_h
#define mozilla_a11y_ProxyAccessible_h
#include "mozilla/a11y/Role.h"
#include "nsIAccessibleText.h"
#include "nsIAccessibleTypes.h"
#include "Accessible.h"
#include "nsString.h"
#include "nsTArray.h"
#include "nsRect.h"
#include "Accessible.h"
namespace mozilla {
namespace a11y {
class Accessible;
class Attribute;
class DocAccessibleParent;
enum class RelationType;
class ProxyAccessible
{
public:
ProxyAccessible(uint64_t aID, ProxyAccessible* aParent,
DocAccessibleParent* aDoc, role aRole) :
mParent(aParent), mDoc(aDoc), mWrapper(0), mID(aID), mRole(aRole),
mOuterDoc(false), mIsDoc(false)
{
MOZ_COUNT_CTOR(ProxyAccessible);
}
~ProxyAccessible()
{
MOZ_COUNT_DTOR(ProxyAccessible);
MOZ_ASSERT(!mWrapper);
}
void AddChildAt(uint32_t aIdx, ProxyAccessible* aChild)
{ mChildren.InsertElementAt(aIdx, aChild); }
uint32_t ChildrenCount() const { return mChildren.Length(); }
ProxyAccessible* ChildAt(uint32_t aIdx) const { return mChildren[aIdx]; }
ProxyAccessible* FirstChild() const
{ return mChildren.Length() ? mChildren[0] : nullptr; }
ProxyAccessible* LastChild() const
{ return mChildren.Length() ? mChildren[mChildren.Length() - 1] : nullptr; }
ProxyAccessible* PrevSibling() const
{
size_t idx = IndexInParent();
return idx > 0 ? Parent()->mChildren[idx - 1] : nullptr;
}
ProxyAccessible* NextSibling() const
{
size_t idx = IndexInParent();
return idx < Parent()->mChildren.Length() ? Parent()->mChildren[idx + 1]
: nullptr;
}
// XXX evaluate if this is fast enough.
size_t IndexInParent() const { return Parent()->mChildren.IndexOf(this); }
uint32_t EmbeddedChildCount() const;
int32_t IndexOfEmbeddedChild(const ProxyAccessible*);
ProxyAccessible* EmbeddedChildAt(size_t aChildIdx);
bool MustPruneChildren() const;
void Shutdown();
void SetChildDoc(DocAccessibleParent*);
/**
* Remove The given child.
*/
void RemoveChild(ProxyAccessible* aChild)
{ mChildren.RemoveElement(aChild); }
/**
* Return the proxy for the parent of the wrapped accessible.
*/
ProxyAccessible* Parent() const { return mParent; }
Accessible* OuterDocOfRemoteBrowser() const;
/**
* Get the role of the accessible we're proxying.
*/
role Role() const { return mRole; }
/*
* Return the states for the proxied accessible.
*/
uint64_t State() const;
/*
* Return the native states for the proxied accessible.
*/
uint64_t NativeState() const;
/*
* Set aName to the name of the proxied accessible.
*/
void Name(nsString& aName) const;
/*
* Set aValue to the value of the proxied accessible.
*/
void Value(nsString& aValue) const;
/*
* Set aHelp to the help string of the proxied accessible.
*/
void Help(nsString& aHelp) const;
/**
* Set aDesc to the description of the proxied accessible.
*/
void Description(nsString& aDesc) const;
/**
* Get the set of attributes on the proxied accessible.
*/
void Attributes(nsTArray<Attribute> *aAttrs) const;
/**
* Return set of targets of given relation type.
*/
nsTArray<ProxyAccessible*> RelationByType(RelationType aType) const;
/**
* Get all relations for this accessible.
*/
void Relations(nsTArray<RelationType>* aTypes,
nsTArray<nsTArray<ProxyAccessible*>>* aTargetSets) const;
bool IsSearchbox() const;
nsIAtom* LandmarkRole() const;
nsIAtom* ARIARoleAtom() const;
int32_t GetLevelInternal();
void ScrollTo(uint32_t aScrollType);
void ScrollToPoint(uint32_t aScrollType, int32_t aX, int32_t aY);
int32_t CaretLineNumber();
int32_t CaretOffset();
void SetCaretOffset(int32_t aOffset);
int32_t CharacterCount();
int32_t SelectionCount();
/**
* Get the text between the given offsets.
*/
bool TextSubstring(int32_t aStartOffset, int32_t aEndOfset,
nsString& aText) const;
void GetTextAfterOffset(int32_t aOffset, AccessibleTextBoundary aBoundaryType,
nsString& aText, int32_t* aStartOffset,
int32_t* aEndOffset);
void GetTextAtOffset(int32_t aOffset, AccessibleTextBoundary aBoundaryType,
nsString& aText, int32_t* aStartOffset,
int32_t* aEndOffset);
void GetTextBeforeOffset(int32_t aOffset, AccessibleTextBoundary aBoundaryType,
nsString& aText, int32_t* aStartOffset,
int32_t* aEndOffset);
char16_t CharAt(int32_t aOffset);
void TextAttributes(bool aIncludeDefAttrs,
const int32_t aOffset,
nsTArray<Attribute>* aAttributes,
int32_t* aStartOffset,
int32_t* aEndOffset);
void DefaultTextAttributes(nsTArray<Attribute>* aAttrs);
nsIntRect TextBounds(int32_t aStartOffset, int32_t aEndOffset,
uint32_t aCoordType = nsIAccessibleCoordinateType::COORDTYPE_SCREEN_RELATIVE);
nsIntRect CharBounds(int32_t aOffset, uint32_t aCoordType);
int32_t OffsetAtPoint(int32_t aX, int32_t aY, uint32_t aCoordType);
bool SelectionBoundsAt(int32_t aSelectionNum,
nsString& aData,
int32_t* aStartOffset,
int32_t* aEndOffset);
bool SetSelectionBoundsAt(int32_t aSelectionNum,
int32_t aStartOffset,
int32_t aEndOffset);
bool AddToSelection(int32_t aStartOffset,
int32_t aEndOffset);
bool RemoveFromSelection(int32_t aSelectionNum);
void ScrollSubstringTo(int32_t aStartOffset, int32_t aEndOffset,
uint32_t aScrollType);
void ScrollSubstringToPoint(int32_t aStartOffset,
int32_t aEndOffset,
uint32_t aCoordinateType,
int32_t aX, int32_t aY);
void Text(nsString* aText);
void ReplaceText(const nsString& aText);
bool InsertText(const nsString& aText, int32_t aPosition);
bool CopyText(int32_t aStartPos, int32_t aEndPos);
bool CutText(int32_t aStartPos, int32_t aEndPos);
bool DeleteText(int32_t aStartPos, int32_t aEndPos);
bool PasteText(int32_t aPosition);
nsIntPoint ImagePosition(uint32_t aCoordType);
nsIntSize ImageSize();
uint32_t StartOffset(bool* aOk);
uint32_t EndOffset(bool* aOk);
bool IsLinkValid();
// XXX checking mRole alone may not result in same behavior as Accessibles
// due to ARIA roles. See bug 1210477.
inline bool IsTable() const
{
return mRole == roles::TABLE || mRole == roles::MATHML_TABLE;
}
inline bool IsTableRow() const
{
return (mRole == roles::ROW ||
mRole == roles::MATHML_TABLE_ROW ||
mRole == roles::MATHML_LABELED_ROW);
}
inline bool IsTableCell() const
{
return (mRole == roles::CELL ||
mRole == roles::COLUMNHEADER ||
mRole == roles::ROWHEADER ||
mRole == roles::GRID_CELL ||
mRole == roles::MATHML_CELL);
}
uint32_t AnchorCount(bool* aOk);
void AnchorURIAt(uint32_t aIndex, nsCString& aURI, bool* aOk);
ProxyAccessible* AnchorAt(uint32_t aIndex);
uint32_t LinkCount();
ProxyAccessible* LinkAt(const uint32_t& aIndex);
int32_t LinkIndexOf(ProxyAccessible* aLink);
int32_t LinkIndexAtOffset(uint32_t aOffset);
ProxyAccessible* TableOfACell();
uint32_t ColIdx();
uint32_t RowIdx();
uint32_t ColExtent();
uint32_t RowExtent();
void ColHeaderCells(nsTArray<ProxyAccessible*>* aCells);
void RowHeaderCells(nsTArray<ProxyAccessible*>* aCells);
bool IsCellSelected();
ProxyAccessible* TableCaption();
void TableSummary(nsString& aSummary);
uint32_t TableColumnCount();
uint32_t TableRowCount();
ProxyAccessible* TableCellAt(uint32_t aRow, uint32_t aCol);
int32_t TableCellIndexAt(uint32_t aRow, uint32_t aCol);
int32_t TableColumnIndexAt(uint32_t aCellIndex);
int32_t TableRowIndexAt(uint32_t aCellIndex);
void TableRowAndColumnIndicesAt(uint32_t aCellIndex,
int32_t* aRow, int32_t* aCol);
uint32_t TableColumnExtentAt(uint32_t aRow, uint32_t aCol);
uint32_t TableRowExtentAt(uint32_t aRow, uint32_t aCol);
void TableColumnDescription(uint32_t aCol, nsString& aDescription);
void TableRowDescription(uint32_t aRow, nsString& aDescription);
bool TableColumnSelected(uint32_t aCol);
bool TableRowSelected(uint32_t aRow);
bool TableCellSelected(uint32_t aRow, uint32_t aCol);
uint32_t TableSelectedCellCount();
uint32_t TableSelectedColumnCount();
uint32_t TableSelectedRowCount();
void TableSelectedCells(nsTArray<ProxyAccessible*>* aCellIDs);
void TableSelectedCellIndices(nsTArray<uint32_t>* aCellIndices);
void TableSelectedColumnIndices(nsTArray<uint32_t>* aColumnIndices);
void TableSelectedRowIndices(nsTArray<uint32_t>* aRowIndices);
void TableSelectColumn(uint32_t aCol);
void TableSelectRow(uint32_t aRow);
void TableUnselectColumn(uint32_t aCol);
void TableUnselectRow(uint32_t aRow);
bool TableIsProbablyForLayout();
ProxyAccessible* AtkTableColumnHeader(int32_t aCol);
ProxyAccessible* AtkTableRowHeader(int32_t aRow);
void SelectedItems(nsTArray<ProxyAccessible*>* aSelectedItems);
uint32_t SelectedItemCount();
ProxyAccessible* GetSelectedItem(uint32_t aIndex);
bool IsItemSelected(uint32_t aIndex);
bool AddItemToSelection(uint32_t aIndex);
bool RemoveItemFromSelection(uint32_t aIndex);
bool SelectAll();
bool UnselectAll();
void TakeSelection();
void SetSelected(bool aSelect);
bool DoAction(uint8_t aIndex);
uint8_t ActionCount();
void ActionDescriptionAt(uint8_t aIndex, nsString& aDescription);
void ActionNameAt(uint8_t aIndex, nsString& aName);
KeyBinding AccessKey();
KeyBinding KeyboardShortcut();
void AtkKeyBinding(nsString& aBinding);
double CurValue();
bool SetCurValue(double aValue);
double MinValue();
double MaxValue();
double Step();
void TakeFocus();
ProxyAccessible* FocusedChild();
ProxyAccessible* ChildAtPoint(int32_t aX, int32_t aY,
Accessible::EWhichChildAtPoint aWhichChild);
nsIntRect Bounds();
void Language(nsString& aLocale);
void DocType(nsString& aType);
void Title(nsString& aTitle);
void URL(nsString& aURL);
void MimeType(nsString aMime);
void URLDocTypeMimeType(nsString& aURL, nsString& aDocType,
nsString& aMimeType);
ProxyAccessible* AccessibleAtPoint(int32_t aX, int32_t aY,
bool aNeedsScreenCoords);
void Extents(bool aNeedsScreenCoords, int32_t* aX, int32_t* aY,
int32_t* aWidth, int32_t* aHeight);
/**
* Allow the platform to store a pointers worth of data on us.
*/
uintptr_t GetWrapper() const { return mWrapper; }
void SetWrapper(uintptr_t aWrapper) { mWrapper = aWrapper; }
/*
* Return the ID of the accessible being proxied.
*/
uint64_t ID() const { return mID; }
/**
* Return the document containing this proxy, or the proxy itself if it is a
* document.
*/
DocAccessibleParent* Document() const { return mDoc; }
/**
* Return true if this proxy is a DocAccessibleParent.
*/
bool IsDoc() const { return mIsDoc; }
DocAccessibleParent* AsDoc() const { return IsDoc() ? mDoc : nullptr; }
protected:
explicit ProxyAccessible(DocAccessibleParent* aThisAsDoc) :
mParent(nullptr), mDoc(aThisAsDoc), mWrapper(0), mID(0),
mRole(roles::DOCUMENT), mOuterDoc(false), mIsDoc(true)
{ MOZ_COUNT_CTOR(ProxyAccessible); }
protected:
ProxyAccessible* mParent;
private:
nsTArray<ProxyAccessible*> mChildren;
DocAccessibleParent* mDoc;
uintptr_t mWrapper;
uint64_t mID;
role mRole : 30;
bool mOuterDoc : 1;
const bool mIsDoc: 1;
};
enum Interfaces
{
HYPERTEXT = 1,
HYPERLINK = 2,
IMAGE = 4,
VALUE = 8,
TABLE = 16,
TABLECELL = 32,
DOCUMENT = 64,
SELECTION = 128,
ACTION = 256,
};
}
}
#endif
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