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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
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Add m-esr52 at 52.6.0
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+/* -*- 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 "nsIEditor.h"
+#include "nsIPersistentProperties2.h"
+#include "nsIPlaintextEditor.h"
+#include "nsFrameSelection.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)
+{
+ // We need to call DeleteText() even if there is no contents because we need
+ // to ensure to move focus to the editor via SetSelectionRange() called in
+ // DeleteText().
+ DeleteText(0, CharacterCount());
+
+ nsCOMPtr<nsIEditor> editor = GetEditor();
+ nsCOMPtr<nsIPlaintextEditor> plaintextEditor(do_QueryInterface(editor));
+ if (!plaintextEditor) {
+ return;
+ }
+
+ // DeleteText() may cause inserting <br> element in some cases. Let's
+ // select all again and replace whole contents.
+ editor->SelectAll();
+
+ plaintextEditor->InsertText(aText);
+}
+
+inline void
+HyperTextAccessible::InsertText(const nsAString& aText, int32_t aPosition)
+{
+ nsCOMPtr<nsIEditor> editor = GetEditor();
+ nsCOMPtr<nsIPlaintextEditor> peditor(do_QueryInterface(editor));
+ if (peditor) {
+ SetSelectionRange(aPosition, aPosition);
+ peditor->InsertText(aText);
+ }
+}
+
+inline void
+HyperTextAccessible::CopyText(int32_t aStartPos, int32_t aEndPos)
+ {
+ nsCOMPtr<nsIEditor> editor = GetEditor();
+ if (editor) {
+ SetSelectionRange(aStartPos, aEndPos);
+ editor->Copy();
+ }
+ }
+
+inline void
+HyperTextAccessible::CutText(int32_t aStartPos, int32_t aEndPos)
+ {
+ nsCOMPtr<nsIEditor> editor = GetEditor();
+ if (editor) {
+ SetSelectionRange(aStartPos, aEndPos);
+ editor->Cut();
+ }
+ }
+
+inline void
+HyperTextAccessible::DeleteText(int32_t aStartPos, int32_t aEndPos)
+{
+ nsCOMPtr<nsIEditor> editor = GetEditor();
+ if (editor) {
+ SetSelectionRange(aStartPos, aEndPos);
+ editor->DeleteSelection(nsIEditor::eNone, nsIEditor::eStrip);
+ }
+}
+
+inline void
+HyperTextAccessible::PasteText(int32_t aPosition)
+{
+ nsCOMPtr<nsIEditor> editor = GetEditor();
+ if (editor) {
+ SetSelectionRange(aPosition, aPosition);
+ editor->Paste(nsIClipboard::kGlobalClipboard);
+ }
+}
+
+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
+