1 files changed, 151 insertions, 0 deletions
diff --git a/accessible/generic/HyperTextAccessible-inl.h b/accessible/generic/HyperTextAccessible-inl.h
new file mode 100644
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--- /dev/null
+++ b/accessible/generic/HyperTextAccessible-inl.h
@@ -0,0 +1,151 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 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/. */
+
+#ifndef mozilla_a11y_HyperTextAccessible_inl_h__
+#define mozilla_a11y_HyperTextAccessible_inl_h__
+
+#include "HyperTextAccessible.h"
+
+#include "nsAccUtils.h"
+
+#include "nsIClipboard.h"
+#include "nsFrameSelection.h"
+
+#include "mozilla/TextEditor.h"
+
+namespace mozilla {
+namespace a11y {
+
+inline bool HyperTextAccessible::IsValidOffset(int32_t aOffset) {
+  index_t offset = ConvertMagicOffset(aOffset);
+  return offset.IsValid() && offset <= CharacterCount();
+}
+
+inline bool HyperTextAccessible::IsValidRange(int32_t aStartOffset,
+                                              int32_t aEndOffset) {
+  index_t startOffset = ConvertMagicOffset(aStartOffset);
+  index_t endOffset = ConvertMagicOffset(aEndOffset);
+  return startOffset.IsValid() && endOffset.IsValid() &&
+         startOffset <= endOffset && endOffset <= CharacterCount();
+}
+
+inline void HyperTextAccessible::SetCaretOffset(int32_t aOffset) {
+  SetSelectionRange(aOffset, aOffset);
+  // XXX: Force cache refresh until a good solution for AT emulation of user
+  // input is implemented (AccessFu caret movement).
+  SelectionMgr()->UpdateCaretOffset(this, aOffset);
+}
+
+inline bool HyperTextAccessible::AddToSelection(int32_t aStartOffset,
+                                                int32_t aEndOffset) {
+  dom::Selection* domSel = DOMSelection();
+  return domSel &&
+         SetSelectionBoundsAt(domSel->RangeCount(), aStartOffset, aEndOffset);
+}
+
+inline void HyperTextAccessible::ReplaceText(const nsAString& aText) {
+  if (aText.Length() == 0) {
+    DeleteText(0, CharacterCount());
+    return;
+  }
+
+  SetSelectionRange(0, CharacterCount());
+
+  RefPtr<TextEditor> textEditor = GetEditor();
+  if (!textEditor) {
+    return;
+  }
+
+  DebugOnly<nsresult> rv = textEditor->InsertTextAsAction(aText);
+  NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "Failed to insert the new text");
+}
+
+inline void HyperTextAccessible::InsertText(const nsAString& aText,
+                                            int32_t aPosition) {
+  RefPtr<TextEditor> textEditor = GetEditor();
+  if (textEditor) {
+    SetSelectionRange(aPosition, aPosition);
+    DebugOnly<nsresult> rv = textEditor->InsertTextAsAction(aText);
+    NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "Failed to insert the text");
+  }
+}
+
+inline void HyperTextAccessible::CopyText(int32_t aStartPos, int32_t aEndPos) {
+  RefPtr<TextEditor> textEditor = GetEditor();
+  if (textEditor) {
+    SetSelectionRange(aStartPos, aEndPos);
+    textEditor->Copy();
+  }
+}
+
+inline void HyperTextAccessible::CutText(int32_t aStartPos, int32_t aEndPos) {
+  RefPtr<TextEditor> textEditor = GetEditor();
+  if (textEditor) {
+    SetSelectionRange(aStartPos, aEndPos);
+    textEditor->Cut();
+  }
+}
+
+inline void HyperTextAccessible::DeleteText(int32_t aStartPos,
+                                            int32_t aEndPos) {
+  RefPtr<TextEditor> textEditor = GetEditor();
+  if (!textEditor) {
+    return;
+  }
+  SetSelectionRange(aStartPos, aEndPos);
+  DebugOnly<nsresult> rv =
+      textEditor->DeleteSelectionAsAction(nsIEditor::eNone, nsIEditor::eStrip);
+  NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "Failed to delete text");
+}
+
+inline void HyperTextAccessible::PasteText(int32_t aPosition) {
+  RefPtr<TextEditor> textEditor = GetEditor();
+  if (textEditor) {
+    SetSelectionRange(aPosition, aPosition);
+    textEditor->PasteAsAction(nsIClipboard::kGlobalClipboard, true);
+  }
+}
+
+inline index_t HyperTextAccessible::ConvertMagicOffset(int32_t aOffset) const {
+  if (aOffset == nsIAccessibleText::TEXT_OFFSET_END_OF_TEXT)
+    return CharacterCount();
+
+  if (aOffset == nsIAccessibleText::TEXT_OFFSET_CARET) return CaretOffset();
+
+  return aOffset;
+}
+
+inline uint32_t HyperTextAccessible::AdjustCaretOffset(uint32_t aOffset) const {
+  // It is the same character offset when the caret is visually at the very
+  // end of a line or the start of a new line (soft line break). Getting text
+  // at the line should provide the line with the visual caret, otherwise
+  // screen readers will announce the wrong line as the user presses up or
+  // down arrow and land at the end of a line.
+  if (aOffset > 0 && IsCaretAtEndOfLine()) return aOffset - 1;
+
+  return aOffset;
+}
+
+inline bool HyperTextAccessible::IsCaretAtEndOfLine() const {
+  RefPtr<nsFrameSelection> frameSelection = FrameSelection();
+  return frameSelection && frameSelection->GetHint() == CARET_ASSOCIATE_BEFORE;
+}
+
+inline already_AddRefed<nsFrameSelection> HyperTextAccessible::FrameSelection()
+    const {
+  nsIFrame* frame = GetFrame();
+  return frame ? frame->GetFrameSelection() : nullptr;
+}
+
+inline dom::Selection* HyperTextAccessible::DOMSelection() const {
+  RefPtr<nsFrameSelection> frameSelection = FrameSelection();
+  return frameSelection ? frameSelection->GetSelection(SelectionType::eNormal)
+                        : nullptr;
+}
+
+}  // namespace a11y
+}  // namespace mozilla
+
+#endif