gecko/accessible/xpcom/xpcAccessibleHyperText.cpp

573 lines
15 KiB
C++

/* -*- 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/. */
#include "xpcAccessibleHyperText.h"
#include "Accessible-inl.h"
#include "HyperTextAccessible-inl.h"
#include "TextRange.h"
#include "xpcAccessibleDocument.h"
#include "xpcAccessibleTextRange.h"
#include "nsIPersistentProperties2.h"
#include "nsIMutableArray.h"
using namespace mozilla::a11y;
////////////////////////////////////////////////////////////////////////////////
// nsISupports
NS_INTERFACE_MAP_BEGIN(xpcAccessibleHyperText)
NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsIAccessibleText,
mSupportedIfaces & eText)
NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsIAccessibleEditableText,
mSupportedIfaces & eText)
NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsIAccessibleHyperText,
mSupportedIfaces & eText)
NS_INTERFACE_MAP_END_INHERITING(xpcAccessibleGeneric)
NS_IMPL_ADDREF_INHERITED(xpcAccessibleHyperText, xpcAccessibleGeneric)
NS_IMPL_RELEASE_INHERITED(xpcAccessibleHyperText, xpcAccessibleGeneric)
////////////////////////////////////////////////////////////////////////////////
// nsIAccessibleText
NS_IMETHODIMP
xpcAccessibleHyperText::GetCharacterCount(int32_t* aCharacterCount)
{
NS_ENSURE_ARG_POINTER(aCharacterCount);
*aCharacterCount = 0;
if (!Intl())
return NS_ERROR_FAILURE;
*aCharacterCount = Intl()->CharacterCount();
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleHyperText::GetText(int32_t aStartOffset, int32_t aEndOffset,
nsAString& aText)
{
aText.Truncate();
if (!Intl())
return NS_ERROR_FAILURE;
Intl()->TextSubstring(aStartOffset, aEndOffset, aText);
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleHyperText::GetTextBeforeOffset(int32_t aOffset,
AccessibleTextBoundary aBoundaryType,
int32_t* aStartOffset,
int32_t* aEndOffset,
nsAString& aText)
{
NS_ENSURE_ARG_POINTER(aStartOffset);
NS_ENSURE_ARG_POINTER(aEndOffset);
*aStartOffset = *aEndOffset = 0;
aText.Truncate();
if (!Intl())
return NS_ERROR_FAILURE;
Intl()->TextBeforeOffset(aOffset, aBoundaryType, aStartOffset, aEndOffset, aText);
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleHyperText::GetTextAtOffset(int32_t aOffset,
AccessibleTextBoundary aBoundaryType,
int32_t* aStartOffset,
int32_t* aEndOffset, nsAString& aText)
{
NS_ENSURE_ARG_POINTER(aStartOffset);
NS_ENSURE_ARG_POINTER(aEndOffset);
*aStartOffset = *aEndOffset = 0;
aText.Truncate();
if (!Intl())
return NS_ERROR_FAILURE;
Intl()->TextAtOffset(aOffset, aBoundaryType, aStartOffset, aEndOffset, aText);
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleHyperText::GetTextAfterOffset(int32_t aOffset,
AccessibleTextBoundary aBoundaryType,
int32_t* aStartOffset,
int32_t* aEndOffset, nsAString& aText)
{
NS_ENSURE_ARG_POINTER(aStartOffset);
NS_ENSURE_ARG_POINTER(aEndOffset);
*aStartOffset = *aEndOffset = 0;
aText.Truncate();
if (!Intl())
return NS_ERROR_FAILURE;
Intl()->TextAfterOffset(aOffset, aBoundaryType, aStartOffset, aEndOffset, aText);
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleHyperText::GetCharacterAtOffset(int32_t aOffset,
char16_t* aCharacter)
{
NS_ENSURE_ARG_POINTER(aCharacter);
*aCharacter = L'\0';
if (!Intl())
return NS_ERROR_FAILURE;
*aCharacter = Intl()->CharAt(aOffset);
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleHyperText::GetTextAttributes(bool aIncludeDefAttrs,
int32_t aOffset,
int32_t* aStartOffset,
int32_t* aEndOffset,
nsIPersistentProperties** aAttributes)
{
NS_ENSURE_ARG_POINTER(aStartOffset);
NS_ENSURE_ARG_POINTER(aEndOffset);
NS_ENSURE_ARG_POINTER(aAttributes);
*aStartOffset = *aEndOffset = 0;
*aAttributes = nullptr;
if (!Intl())
return NS_ERROR_FAILURE;
nsCOMPtr<nsIPersistentProperties> attrs =
Intl()->TextAttributes(aIncludeDefAttrs, aOffset, aStartOffset, aEndOffset);
attrs.swap(*aAttributes);
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleHyperText::GetDefaultTextAttributes(nsIPersistentProperties** aAttributes)
{
NS_ENSURE_ARG_POINTER(aAttributes);
*aAttributes = nullptr;
if (!Intl())
return NS_ERROR_FAILURE;
nsCOMPtr<nsIPersistentProperties> attrs = Intl()->DefaultTextAttributes();
attrs.swap(*aAttributes);
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleHyperText::GetCharacterExtents(int32_t aOffset,
int32_t* aX, int32_t* aY,
int32_t* aWidth, int32_t* aHeight,
uint32_t aCoordType)
{
NS_ENSURE_ARG_POINTER(aX);
NS_ENSURE_ARG_POINTER(aY);
NS_ENSURE_ARG_POINTER(aWidth);
NS_ENSURE_ARG_POINTER(aHeight);
*aX = *aY = *aWidth = *aHeight;
if (!Intl())
return NS_ERROR_FAILURE;
nsIntRect rect = Intl()->CharBounds(aOffset, aCoordType);
*aX = rect.x; *aY = rect.y;
*aWidth = rect.width; *aHeight = rect.height;
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleHyperText::GetRangeExtents(int32_t aStartOffset, int32_t aEndOffset,
int32_t* aX, int32_t* aY,
int32_t* aWidth, int32_t* aHeight,
uint32_t aCoordType)
{
NS_ENSURE_ARG_POINTER(aX);
NS_ENSURE_ARG_POINTER(aY);
NS_ENSURE_ARG_POINTER(aWidth);
NS_ENSURE_ARG_POINTER(aHeight);
*aX = *aY = *aWidth = *aHeight = 0;
if (!Intl())
return NS_ERROR_FAILURE;
nsIntRect rect = Intl()->TextBounds(aStartOffset, aEndOffset, aCoordType);
*aX = rect.x; *aY = rect.y;
*aWidth = rect.width; *aHeight = rect.height;
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleHyperText::GetOffsetAtPoint(int32_t aX, int32_t aY,
uint32_t aCoordType, int32_t* aOffset)
{
NS_ENSURE_ARG_POINTER(aOffset);
*aOffset = -1;
if (!Intl())
return NS_ERROR_FAILURE;
*aOffset = Intl()->OffsetAtPoint(aX, aY, aCoordType);
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleHyperText::GetCaretOffset(int32_t* aCaretOffset)
{
NS_ENSURE_ARG_POINTER(aCaretOffset);
*aCaretOffset = -1;
if (!Intl())
return NS_ERROR_FAILURE;
*aCaretOffset = Intl()->CaretOffset();
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleHyperText::SetCaretOffset(int32_t aCaretOffset)
{
if (!Intl())
return NS_ERROR_FAILURE;
Intl()->SetCaretOffset(aCaretOffset);
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleHyperText::GetSelectionCount(int32_t* aSelectionCount)
{
NS_ENSURE_ARG_POINTER(aSelectionCount);
*aSelectionCount = 0;
if (!Intl())
return NS_ERROR_FAILURE;
*aSelectionCount = Intl()->SelectionCount();
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleHyperText::GetSelectionBounds(int32_t aSelectionNum,
int32_t* aStartOffset,
int32_t* aEndOffset)
{
NS_ENSURE_ARG_POINTER(aStartOffset);
NS_ENSURE_ARG_POINTER(aEndOffset);
*aStartOffset = *aEndOffset = 0;
if (!Intl())
return NS_ERROR_FAILURE;
if (aSelectionNum < 0 || aSelectionNum >= Intl()->SelectionCount())
return NS_ERROR_INVALID_ARG;
Intl()->SelectionBoundsAt(aSelectionNum, aStartOffset, aEndOffset);
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleHyperText::SetSelectionBounds(int32_t aSelectionNum,
int32_t aStartOffset,
int32_t aEndOffset)
{
if (!Intl())
return NS_ERROR_FAILURE;
if (aSelectionNum < 0 ||
!Intl()->SetSelectionBoundsAt(aSelectionNum, aStartOffset, aEndOffset))
return NS_ERROR_INVALID_ARG;
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleHyperText::AddSelection(int32_t aStartOffset, int32_t aEndOffset)
{
if (!Intl())
return NS_ERROR_FAILURE;
Intl()->AddToSelection(aStartOffset, aEndOffset);
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleHyperText::RemoveSelection(int32_t aSelectionNum)
{
if (!Intl())
return NS_ERROR_FAILURE;
Intl()->RemoveFromSelection(aSelectionNum);
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleHyperText::ScrollSubstringTo(int32_t aStartOffset,
int32_t aEndOffset,
uint32_t aScrollType)
{
if (!Intl())
return NS_ERROR_FAILURE;
Intl()->ScrollSubstringTo(aStartOffset, aEndOffset, aScrollType);
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleHyperText::ScrollSubstringToPoint(int32_t aStartOffset,
int32_t aEndOffset,
uint32_t aCoordinateType,
int32_t aX, int32_t aY)
{
if (!Intl())
return NS_ERROR_FAILURE;
Intl()->ScrollSubstringToPoint(aStartOffset, aEndOffset, aCoordinateType, aX, aY);
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleHyperText::GetEnclosingRange(nsIAccessibleTextRange** aRange)
{
NS_ENSURE_ARG_POINTER(aRange);
*aRange = nullptr;
if (!Intl())
return NS_ERROR_FAILURE;
RefPtr<xpcAccessibleTextRange> range = new xpcAccessibleTextRange;
Intl()->EnclosingRange(range->mRange);
NS_ASSERTION(range->mRange.IsValid(),
"Should always have an enclosing range!");
range.forget(aRange);
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleHyperText::GetSelectionRanges(nsIArray** aRanges)
{
NS_ENSURE_ARG_POINTER(aRanges);
*aRanges = nullptr;
if (!Intl())
return NS_ERROR_FAILURE;
nsresult rv = NS_OK;
nsCOMPtr<nsIMutableArray> xpcRanges =
do_CreateInstance(NS_ARRAY_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
AutoTArray<TextRange, 1> ranges;
Intl()->SelectionRanges(&ranges);
uint32_t len = ranges.Length();
for (uint32_t idx = 0; idx < len; idx++)
xpcRanges->AppendElement(new xpcAccessibleTextRange(Move(ranges[idx])),
false);
xpcRanges.forget(aRanges);
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleHyperText::GetVisibleRanges(nsIArray** aRanges)
{
NS_ENSURE_ARG_POINTER(aRanges);
*aRanges = nullptr;
if (!Intl())
return NS_ERROR_FAILURE;
nsresult rv = NS_OK;
nsCOMPtr<nsIMutableArray> xpcRanges =
do_CreateInstance(NS_ARRAY_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
nsTArray<TextRange> ranges;
Intl()->VisibleRanges(&ranges);
uint32_t len = ranges.Length();
for (uint32_t idx = 0; idx < len; idx++)
xpcRanges->AppendElement(new xpcAccessibleTextRange(Move(ranges[idx])),
false);
xpcRanges.forget(aRanges);
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleHyperText::GetRangeByChild(nsIAccessible* aChild,
nsIAccessibleTextRange** aRange)
{
NS_ENSURE_ARG_POINTER(aRange);
*aRange = nullptr;
if (!Intl())
return NS_ERROR_FAILURE;
Accessible* child = aChild->ToInternalAccessible();
if (child) {
RefPtr<xpcAccessibleTextRange> range = new xpcAccessibleTextRange;
Intl()->RangeByChild(child, range->mRange);
if (range->mRange.IsValid())
range.forget(aRange);
}
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleHyperText::GetRangeAtPoint(int32_t aX, int32_t aY,
nsIAccessibleTextRange** aRange)
{
NS_ENSURE_ARG_POINTER(aRange);
*aRange = nullptr;
if (!Intl())
return NS_ERROR_FAILURE;
RefPtr<xpcAccessibleTextRange> range = new xpcAccessibleTextRange;
Intl()->RangeAtPoint(aX, aY, range->mRange);
if (range->mRange.IsValid())
range.forget(aRange);
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
// nsIAccessibleEditableText
NS_IMETHODIMP
xpcAccessibleHyperText::SetTextContents(const nsAString& aText)
{
if (!Intl())
return NS_ERROR_FAILURE;
Intl()->ReplaceText(aText);
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleHyperText::InsertText(const nsAString& aText, int32_t aOffset)
{
if (!Intl())
return NS_ERROR_FAILURE;
Intl()->InsertText(aText, aOffset);
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleHyperText::CopyText(int32_t aStartOffset, int32_t aEndOffset)
{
if (!Intl())
return NS_ERROR_FAILURE;
Intl()->CopyText(aStartOffset, aEndOffset);
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleHyperText::CutText(int32_t aStartOffset, int32_t aEndOffset)
{
if (!Intl())
return NS_ERROR_FAILURE;
Intl()->CutText(aStartOffset, aEndOffset);
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleHyperText::DeleteText(int32_t aStartOffset, int32_t aEndOffset)
{
if (!Intl())
return NS_ERROR_FAILURE;
Intl()->DeleteText(aStartOffset, aEndOffset);
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleHyperText::PasteText(int32_t aOffset)
{
if (!Intl())
return NS_ERROR_FAILURE;
Intl()->PasteText(aOffset);
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
// nsIAccessibleHyperText
NS_IMETHODIMP
xpcAccessibleHyperText::GetLinkCount(int32_t* aLinkCount)
{
NS_ENSURE_ARG_POINTER(aLinkCount);
*aLinkCount = 0;
if (!Intl())
return NS_ERROR_FAILURE;
*aLinkCount = Intl()->LinkCount();
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleHyperText::GetLinkAt(int32_t aIndex, nsIAccessibleHyperLink** aLink)
{
NS_ENSURE_ARG_POINTER(aLink);
*aLink = nullptr;
if (!Intl())
return NS_ERROR_FAILURE;
NS_IF_ADDREF(*aLink = ToXPC(Intl()->LinkAt(aIndex)));
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleHyperText::GetLinkIndex(nsIAccessibleHyperLink* aLink,
int32_t* aIndex)
{
NS_ENSURE_ARG_POINTER(aLink);
NS_ENSURE_ARG_POINTER(aIndex);
*aIndex = -1;
if (!Intl())
return NS_ERROR_FAILURE;
nsCOMPtr<nsIAccessible> xpcLink(do_QueryInterface(aLink));
Accessible* link = xpcLink->ToInternalAccessible();
if (link)
*aIndex = Intl()->LinkIndexOf(link);
return NS_OK;
}
NS_IMETHODIMP
xpcAccessibleHyperText::GetLinkIndexAtOffset(int32_t aOffset,
int32_t* aLinkIndex)
{
NS_ENSURE_ARG_POINTER(aLinkIndex);
*aLinkIndex = -1; // API says this magic value means 'not found'
if (!Intl())
return NS_ERROR_FAILURE;
*aLinkIndex = Intl()->LinkIndexAtOffset(aOffset);
return NS_OK;
}