зеркало из https://github.com/mozilla/gecko-dev.git
130 строки
4.2 KiB
C++
130 строки
4.2 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_a11y_HyperTextAccessible_inl_h__
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#define mozilla_a11y_HyperTextAccessible_inl_h__
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#include "HyperTextAccessible.h"
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#include "nsAccUtils.h"
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#include "nsIClipboard.h"
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#include "nsFrameSelection.h"
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#include "mozilla/EditorBase.h"
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namespace mozilla {
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namespace a11y {
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inline void HyperTextAccessible::SetCaretOffset(int32_t aOffset) {
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SetSelectionRange(aOffset, aOffset);
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// XXX: Force cache refresh until a good solution for AT emulation of user
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// input is implemented (AccessFu caret movement).
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SelectionMgr()->UpdateCaretOffset(this, aOffset);
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}
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inline bool HyperTextAccessible::AddToSelection(int32_t aStartOffset,
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int32_t aEndOffset) {
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dom::Selection* domSel = DOMSelection();
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return domSel &&
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SetSelectionBoundsAt(domSel->RangeCount(), aStartOffset, aEndOffset);
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}
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inline void HyperTextAccessible::ReplaceText(const nsAString& aText) {
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if (aText.Length() == 0) {
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DeleteText(0, CharacterCount());
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return;
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}
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SetSelectionRange(0, CharacterCount());
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RefPtr<EditorBase> editorBase = GetEditor();
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if (!editorBase) {
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return;
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}
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DebugOnly<nsresult> rv = editorBase->InsertTextAsAction(aText);
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NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "Failed to insert the new text");
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}
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inline void HyperTextAccessible::InsertText(const nsAString& aText,
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int32_t aPosition) {
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RefPtr<EditorBase> editorBase = GetEditor();
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if (editorBase) {
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SetSelectionRange(aPosition, aPosition);
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DebugOnly<nsresult> rv = editorBase->InsertTextAsAction(aText);
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NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "Failed to insert the text");
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}
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}
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inline void HyperTextAccessible::CopyText(int32_t aStartPos, int32_t aEndPos) {
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RefPtr<EditorBase> editorBase = GetEditor();
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if (editorBase) {
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SetSelectionRange(aStartPos, aEndPos);
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editorBase->Copy();
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}
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}
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inline void HyperTextAccessible::CutText(int32_t aStartPos, int32_t aEndPos) {
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RefPtr<EditorBase> editorBase = GetEditor();
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if (editorBase) {
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SetSelectionRange(aStartPos, aEndPos);
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editorBase->Cut();
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}
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}
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inline void HyperTextAccessible::DeleteText(int32_t aStartPos,
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int32_t aEndPos) {
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RefPtr<EditorBase> editorBase = GetEditor();
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if (!editorBase) {
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return;
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}
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SetSelectionRange(aStartPos, aEndPos);
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DebugOnly<nsresult> rv =
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editorBase->DeleteSelectionAsAction(nsIEditor::eNone, nsIEditor::eStrip);
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NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "Failed to delete text");
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}
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inline void HyperTextAccessible::PasteText(int32_t aPosition) {
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RefPtr<EditorBase> editorBase = GetEditor();
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if (editorBase) {
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SetSelectionRange(aPosition, aPosition);
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editorBase->PasteAsAction(nsIClipboard::kGlobalClipboard, true);
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}
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}
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inline uint32_t HyperTextAccessible::AdjustCaretOffset(uint32_t aOffset) const {
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// It is the same character offset when the caret is visually at the very
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// end of a line or the start of a new line (soft line break). Getting text
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// at the line should provide the line with the visual caret, otherwise
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// screen readers will announce the wrong line as the user presses up or
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// down arrow and land at the end of a line.
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if (aOffset > 0 && IsCaretAtEndOfLine()) return aOffset - 1;
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return aOffset;
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}
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inline bool HyperTextAccessible::IsCaretAtEndOfLine() const {
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RefPtr<nsFrameSelection> frameSelection = FrameSelection();
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return frameSelection && frameSelection->GetHint() == CARET_ASSOCIATE_BEFORE;
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}
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inline already_AddRefed<nsFrameSelection> HyperTextAccessible::FrameSelection()
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const {
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nsIFrame* frame = GetFrame();
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return frame ? frame->GetFrameSelection() : nullptr;
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}
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inline dom::Selection* HyperTextAccessible::DOMSelection() const {
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RefPtr<nsFrameSelection> frameSelection = FrameSelection();
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return frameSelection ? frameSelection->GetSelection(SelectionType::eNormal)
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: nullptr;
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}
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} // namespace a11y
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} // namespace mozilla
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#endif
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