import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

2026-09-10 02:08:38 +09:00 · 2018-01-19 03:59:58 +08:00 · 2018-01-19 03:59:58 +08:00 · dcd9973243
commit dcd9973243
150858 changed files with 23884658 additions and 0 deletions
--- a/accessible/windows/ia2/ia2AccessibleText.cpp
+++ b/accessible/windows/ia2/ia2AccessibleText.cpp
@ -0,0 +1,598 @@
+/* -*- 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;
+}