Mirror of roytam1's UXP fork just in case Moonchild and Tobin decide to go after him
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:expandtab:shiftwidth=2:tabstop=2:
*/
/* 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 "ia2AccessibleText.h"
#include "Accessible2.h"
#include "AccessibleText_i.c"
#include "HyperTextAccessibleWrap.h"
#include "HyperTextAccessible-inl.h"
#include "ProxyWrappers.h"
#include "mozilla/ClearOnShutdown.h"
using namespace mozilla::a11y;
StaticRefPtr<HyperTextAccessibleWrap> ia2AccessibleText::sLastTextChangeAcc;
StaticAutoPtr<nsString> ia2AccessibleText::sLastTextChangeString;
uint32_t ia2AccessibleText::sLastTextChangeStart = 0;
uint32_t ia2AccessibleText::sLastTextChangeEnd = 0;
bool ia2AccessibleText::sLastTextChangeWasInsert = false;
// IAccessibleText
STDMETHODIMP
ia2AccessibleText::addSelection(long aStartOffset, long aEndOffset)
{
A11Y_TRYBLOCK_BEGIN
MOZ_ASSERT(!HyperTextProxyFor(this));
HyperTextAccessible* textAcc = static_cast<HyperTextAccessibleWrap*>(this);
if (textAcc->IsDefunct())
return CO_E_OBJNOTCONNECTED;
return textAcc->AddToSelection(aStartOffset, aEndOffset) ?
S_OK : E_INVALIDARG;
A11Y_TRYBLOCK_END
}
STDMETHODIMP
ia2AccessibleText::get_attributes(long aOffset, long *aStartOffset,
long *aEndOffset, BSTR *aTextAttributes)
{
A11Y_TRYBLOCK_BEGIN
if (!aStartOffset || !aEndOffset || !aTextAttributes)
return E_INVALIDARG;
*aStartOffset = 0;
*aEndOffset = 0;
*aTextAttributes = nullptr;
int32_t startOffset = 0, endOffset = 0;
HRESULT hr;
MOZ_ASSERT(!HyperTextProxyFor(this));
HyperTextAccessible* textAcc = static_cast<HyperTextAccessibleWrap*>(this);
if (textAcc->IsDefunct()) {
return CO_E_OBJNOTCONNECTED;
}
nsCOMPtr<nsIPersistentProperties> attributes =
textAcc->TextAttributes(true, aOffset, &startOffset, &endOffset);
hr = AccessibleWrap::ConvertToIA2Attributes(attributes, aTextAttributes);
if (FAILED(hr))
return hr;
*aStartOffset = startOffset;
*aEndOffset = endOffset;
return S_OK;
A11Y_TRYBLOCK_END
}
STDMETHODIMP
ia2AccessibleText::get_caretOffset(long *aOffset)
{
A11Y_TRYBLOCK_BEGIN
if (!aOffset)
return E_INVALIDARG;
*aOffset = -1;
MOZ_ASSERT(!HyperTextProxyFor(this));
HyperTextAccessible* textAcc = static_cast<HyperTextAccessibleWrap*>(this);
if (textAcc->IsDefunct()) {
return CO_E_OBJNOTCONNECTED;
}
*aOffset = textAcc->CaretOffset();
return *aOffset != -1 ? S_OK : S_FALSE;
A11Y_TRYBLOCK_END
}
STDMETHODIMP
ia2AccessibleText::get_characterExtents(long aOffset,
enum IA2CoordinateType aCoordType,
long* aX, long* aY,
long* aWidth, long* aHeight)
{
A11Y_TRYBLOCK_BEGIN
if (!aX || !aY || !aWidth || !aHeight)
return E_INVALIDARG;
*aX = *aY = *aWidth = *aHeight = 0;
uint32_t geckoCoordType = (aCoordType == IA2_COORDTYPE_SCREEN_RELATIVE) ?
nsIAccessibleCoordinateType::COORDTYPE_SCREEN_RELATIVE :
nsIAccessibleCoordinateType::COORDTYPE_PARENT_RELATIVE;
nsIntRect rect;
MOZ_ASSERT(!HyperTextProxyFor(this));
HyperTextAccessible* textAcc = static_cast<HyperTextAccessibleWrap*>(this);
if (textAcc->IsDefunct())
return CO_E_OBJNOTCONNECTED;
rect = textAcc->CharBounds(aOffset, geckoCoordType);
*aX = rect.x;
*aY = rect.y;
*aWidth = rect.width;
*aHeight = rect.height;
return S_OK;
A11Y_TRYBLOCK_END
}
STDMETHODIMP
ia2AccessibleText::get_nSelections(long* aNSelections)
{
A11Y_TRYBLOCK_BEGIN
if (!aNSelections)
return E_INVALIDARG;
*aNSelections = 0;
MOZ_ASSERT(!HyperTextProxyFor(this));
HyperTextAccessible* textAcc = static_cast<HyperTextAccessibleWrap*>(this);
if (textAcc->IsDefunct()) {
return CO_E_OBJNOTCONNECTED;
}
*aNSelections = textAcc->SelectionCount();
return S_OK;
A11Y_TRYBLOCK_END
}
STDMETHODIMP
ia2AccessibleText::get_offsetAtPoint(long aX, long aY,
enum IA2CoordinateType aCoordType,
long* aOffset)
{
A11Y_TRYBLOCK_BEGIN
if (!aOffset)
return E_INVALIDARG;
*aOffset = 0;
uint32_t geckoCoordType = (aCoordType == IA2_COORDTYPE_SCREEN_RELATIVE) ?
nsIAccessibleCoordinateType::COORDTYPE_SCREEN_RELATIVE :
nsIAccessibleCoordinateType::COORDTYPE_PARENT_RELATIVE;
MOZ_ASSERT(!HyperTextProxyFor(this));
HyperTextAccessible* textAcc = static_cast<HyperTextAccessibleWrap*>(this);
if (textAcc->IsDefunct()) {
return CO_E_OBJNOTCONNECTED;
}
*aOffset = textAcc->OffsetAtPoint(aX, aY, geckoCoordType);
return *aOffset == -1 ? S_FALSE : S_OK;
A11Y_TRYBLOCK_END
}
STDMETHODIMP
ia2AccessibleText::get_selection(long aSelectionIndex, long* aStartOffset,
long* aEndOffset)
{
A11Y_TRYBLOCK_BEGIN
if (!aStartOffset || !aEndOffset)
return E_INVALIDARG;
*aStartOffset = *aEndOffset = 0;
int32_t startOffset = 0, endOffset = 0;
MOZ_ASSERT(!HyperTextProxyFor(this));
HyperTextAccessible* textAcc = static_cast<HyperTextAccessibleWrap*>(this);
if (textAcc->IsDefunct()) {
return CO_E_OBJNOTCONNECTED;
}
if (!textAcc->SelectionBoundsAt(aSelectionIndex, &startOffset, &endOffset)) {
return E_INVALIDARG;
}
*aStartOffset = startOffset;
*aEndOffset = endOffset;
return S_OK;
A11Y_TRYBLOCK_END
}
STDMETHODIMP
ia2AccessibleText::get_text(long aStartOffset, long aEndOffset, BSTR* aText)
{
A11Y_TRYBLOCK_BEGIN
if (!aText)
return E_INVALIDARG;
*aText = nullptr;
nsAutoString text;
MOZ_ASSERT(!HyperTextProxyFor(this));
HyperTextAccessible* textAcc = static_cast<HyperTextAccessibleWrap*>(this);
if (textAcc->IsDefunct()) {
return CO_E_OBJNOTCONNECTED;
}
if (!textAcc->IsValidRange(aStartOffset, aEndOffset)) {
return E_INVALIDARG;
}
textAcc->TextSubstring(aStartOffset, aEndOffset, text);
if (text.IsEmpty())
return S_FALSE;
*aText = ::SysAllocStringLen(text.get(), text.Length());
return *aText ? S_OK : E_OUTOFMEMORY;
A11Y_TRYBLOCK_END
}
STDMETHODIMP
ia2AccessibleText::get_textBeforeOffset(long aOffset,
enum IA2TextBoundaryType aBoundaryType,
long* aStartOffset, long* aEndOffset,
BSTR* aText)
{
A11Y_TRYBLOCK_BEGIN
if (!aStartOffset || !aEndOffset || !aText)
return E_INVALIDARG;
*aStartOffset = *aEndOffset = 0;
*aText = nullptr;
HyperTextAccessible* textAcc = static_cast<HyperTextAccessibleWrap*>(this);
if (textAcc->IsDefunct())
return CO_E_OBJNOTCONNECTED;
if (!textAcc->IsValidOffset(aOffset))
return E_INVALIDARG;
nsAutoString text;
int32_t startOffset = 0, endOffset = 0;
if (aBoundaryType == IA2_TEXT_BOUNDARY_ALL) {
startOffset = 0;
endOffset = textAcc->CharacterCount();
textAcc->TextSubstring(startOffset, endOffset, text);
} else {
AccessibleTextBoundary boundaryType = GetGeckoTextBoundary(aBoundaryType);
if (boundaryType == -1)
return S_FALSE;
textAcc->TextBeforeOffset(aOffset, boundaryType, &startOffset, &endOffset, text);
}
*aStartOffset = startOffset;
*aEndOffset = endOffset;
if (text.IsEmpty())
return S_FALSE;
*aText = ::SysAllocStringLen(text.get(), text.Length());
return *aText ? S_OK : E_OUTOFMEMORY;
A11Y_TRYBLOCK_END
}
STDMETHODIMP
ia2AccessibleText::get_textAfterOffset(long aOffset,
enum IA2TextBoundaryType aBoundaryType,
long* aStartOffset, long* aEndOffset,
BSTR* aText)
{
A11Y_TRYBLOCK_BEGIN
if (!aStartOffset || !aEndOffset || !aText)
return E_INVALIDARG;
*aStartOffset = 0;
*aEndOffset = 0;
*aText = nullptr;
HyperTextAccessible* textAcc = static_cast<HyperTextAccessibleWrap*>(this);
if (textAcc->IsDefunct())
return CO_E_OBJNOTCONNECTED;
if (!textAcc->IsValidOffset(aOffset))
return E_INVALIDARG;
nsAutoString text;
int32_t startOffset = 0, endOffset = 0;
if (aBoundaryType == IA2_TEXT_BOUNDARY_ALL) {
startOffset = 0;
endOffset = textAcc->CharacterCount();
textAcc->TextSubstring(startOffset, endOffset, text);
} else {
AccessibleTextBoundary boundaryType = GetGeckoTextBoundary(aBoundaryType);
if (boundaryType == -1)
return S_FALSE;
textAcc->TextAfterOffset(aOffset, boundaryType, &startOffset, &endOffset, text);
}
*aStartOffset = startOffset;
*aEndOffset = endOffset;
if (text.IsEmpty())
return S_FALSE;
*aText = ::SysAllocStringLen(text.get(), text.Length());
return *aText ? S_OK : E_OUTOFMEMORY;
A11Y_TRYBLOCK_END
}
STDMETHODIMP
ia2AccessibleText::get_textAtOffset(long aOffset,
enum IA2TextBoundaryType aBoundaryType,
long* aStartOffset, long* aEndOffset,
BSTR* aText)
{
A11Y_TRYBLOCK_BEGIN
if (!aStartOffset || !aEndOffset || !aText)
return E_INVALIDARG;
*aStartOffset = *aEndOffset = 0;
*aText = nullptr;
HyperTextAccessible* textAcc = static_cast<HyperTextAccessibleWrap*>(this);
if (textAcc->IsDefunct())
return CO_E_OBJNOTCONNECTED;
if (!textAcc->IsValidOffset(aOffset))
return E_INVALIDARG;
nsAutoString text;
int32_t startOffset = 0, endOffset = 0;
if (aBoundaryType == IA2_TEXT_BOUNDARY_ALL) {
startOffset = 0;
endOffset = textAcc->CharacterCount();
textAcc->TextSubstring(startOffset, endOffset, text);
} else {
AccessibleTextBoundary boundaryType = GetGeckoTextBoundary(aBoundaryType);
if (boundaryType == -1)
return S_FALSE;
textAcc->TextAtOffset(aOffset, boundaryType, &startOffset, &endOffset, text);
}
*aStartOffset = startOffset;
*aEndOffset = endOffset;
if (text.IsEmpty())
return S_FALSE;
*aText = ::SysAllocStringLen(text.get(), text.Length());
return *aText ? S_OK : E_OUTOFMEMORY;
A11Y_TRYBLOCK_END
}
STDMETHODIMP
ia2AccessibleText::removeSelection(long aSelectionIndex)
{
A11Y_TRYBLOCK_BEGIN
MOZ_ASSERT(!HyperTextProxyFor(this));
HyperTextAccessible* textAcc = static_cast<HyperTextAccessibleWrap*>(this);
if (textAcc->IsDefunct())
return CO_E_OBJNOTCONNECTED;
return textAcc->RemoveFromSelection(aSelectionIndex) ?
S_OK : E_INVALIDARG;
A11Y_TRYBLOCK_END
}
STDMETHODIMP
ia2AccessibleText::setCaretOffset(long aOffset)
{
A11Y_TRYBLOCK_BEGIN
MOZ_ASSERT(!HyperTextProxyFor(this));
HyperTextAccessible* textAcc = static_cast<HyperTextAccessibleWrap*>(this);
if (textAcc->IsDefunct())
return CO_E_OBJNOTCONNECTED;
if (!textAcc->IsValidOffset(aOffset))
return E_INVALIDARG;
textAcc->SetCaretOffset(aOffset);
return S_OK;
A11Y_TRYBLOCK_END
}
STDMETHODIMP
ia2AccessibleText::setSelection(long aSelectionIndex, long aStartOffset,
long aEndOffset)
{
A11Y_TRYBLOCK_BEGIN
MOZ_ASSERT(!HyperTextProxyFor(this));
HyperTextAccessible* textAcc = static_cast<HyperTextAccessibleWrap*>(this);
if (textAcc->IsDefunct())
return CO_E_OBJNOTCONNECTED;
return textAcc->SetSelectionBoundsAt(aSelectionIndex, aStartOffset, aEndOffset) ?
S_OK : E_INVALIDARG;
A11Y_TRYBLOCK_END
}
STDMETHODIMP
ia2AccessibleText::get_nCharacters(long* aNCharacters)
{
A11Y_TRYBLOCK_BEGIN
if (!aNCharacters)
return E_INVALIDARG;
*aNCharacters = 0;
MOZ_ASSERT(!HyperTextProxyFor(this));
HyperTextAccessible* textAcc = static_cast<HyperTextAccessibleWrap*>(this);
if (textAcc->IsDefunct())
return CO_E_OBJNOTCONNECTED;
*aNCharacters = textAcc->CharacterCount();
return S_OK;
A11Y_TRYBLOCK_END
}
STDMETHODIMP
ia2AccessibleText::scrollSubstringTo(long aStartIndex, long aEndIndex,
enum IA2ScrollType aScrollType)
{
A11Y_TRYBLOCK_BEGIN
MOZ_ASSERT(!HyperTextProxyFor(this));
HyperTextAccessible* textAcc = static_cast<HyperTextAccessibleWrap*>(this);
if (textAcc->IsDefunct())
return CO_E_OBJNOTCONNECTED;
if (!textAcc->IsValidRange(aStartIndex, aEndIndex))
return E_INVALIDARG;
textAcc->ScrollSubstringTo(aStartIndex, aEndIndex, aScrollType);
return S_OK;
A11Y_TRYBLOCK_END
}
STDMETHODIMP
ia2AccessibleText::scrollSubstringToPoint(long aStartIndex, long aEndIndex,
enum IA2CoordinateType aCoordType,
long aX, long aY)
{
A11Y_TRYBLOCK_BEGIN
uint32_t geckoCoordType = (aCoordType == IA2_COORDTYPE_SCREEN_RELATIVE) ?
nsIAccessibleCoordinateType::COORDTYPE_SCREEN_RELATIVE :
nsIAccessibleCoordinateType::COORDTYPE_PARENT_RELATIVE;
MOZ_ASSERT(!HyperTextProxyFor(this));
HyperTextAccessible* textAcc = static_cast<HyperTextAccessibleWrap*>(this);
if (textAcc->IsDefunct())
return CO_E_OBJNOTCONNECTED;
if (!textAcc->IsValidRange(aStartIndex, aEndIndex))
return E_INVALIDARG;
textAcc->ScrollSubstringToPoint(aStartIndex, aEndIndex,
geckoCoordType, aX, aY);
return S_OK;
A11Y_TRYBLOCK_END
}
STDMETHODIMP
ia2AccessibleText::get_newText(IA2TextSegment *aNewText)
{
A11Y_TRYBLOCK_BEGIN
return GetModifiedText(true, aNewText);
A11Y_TRYBLOCK_END
}
STDMETHODIMP
ia2AccessibleText::get_oldText(IA2TextSegment *aOldText)
{
A11Y_TRYBLOCK_BEGIN
return GetModifiedText(false, aOldText);
A11Y_TRYBLOCK_END
}
// ia2AccessibleText
HRESULT
ia2AccessibleText::GetModifiedText(bool aGetInsertedText,
IA2TextSegment *aText)
{
if (!aText)
return E_INVALIDARG;
if (!sLastTextChangeAcc)
return S_OK;
if (aGetInsertedText != sLastTextChangeWasInsert)
return S_OK;
if (sLastTextChangeAcc != this)
return S_OK;
aText->start = sLastTextChangeStart;
aText->end = sLastTextChangeEnd;
if (sLastTextChangeString->IsEmpty())
return S_FALSE;
aText->text = ::SysAllocStringLen(sLastTextChangeString->get(), sLastTextChangeString->Length());
return aText->text ? S_OK : E_OUTOFMEMORY;
}
AccessibleTextBoundary
ia2AccessibleText::GetGeckoTextBoundary(enum IA2TextBoundaryType aBoundaryType)
{
switch (aBoundaryType) {
case IA2_TEXT_BOUNDARY_CHAR:
return nsIAccessibleText::BOUNDARY_CHAR;
case IA2_TEXT_BOUNDARY_WORD:
return nsIAccessibleText::BOUNDARY_WORD_START;
case IA2_TEXT_BOUNDARY_LINE:
return nsIAccessibleText::BOUNDARY_LINE_START;
//case IA2_TEXT_BOUNDARY_SENTENCE:
//case IA2_TEXT_BOUNDARY_PARAGRAPH:
// XXX: not implemented
default:
return -1;
}
}
void
ia2AccessibleText::InitTextChangeData()
{
ClearOnShutdown(&sLastTextChangeAcc);
ClearOnShutdown(&sLastTextChangeString);
}
void
ia2AccessibleText::UpdateTextChangeData(HyperTextAccessibleWrap* aAcc,
bool aInsert, const nsString& aStr,
int32_t aStart, uint32_t aLen)
{
if (!sLastTextChangeString)
sLastTextChangeString = new nsString();
sLastTextChangeAcc = aAcc;
sLastTextChangeStart = aStart;
sLastTextChangeEnd = aStart + aLen;
sLastTextChangeWasInsert = aInsert;
*sLastTextChangeString = aStr;
}