1 files changed, 78 insertions, 0 deletions
diff --git a/accessible/xpcom/xpcAccessibleTextRange.h b/accessible/xpcom/xpcAccessibleTextRange.h
new file mode 100644
index 0000000000..01ca228ade
--- /dev/null
+++ b/accessible/xpcom/xpcAccessibleTextRange.h
@@ -0,0 +1,78 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* 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_xpcAccessibleTextRange_h_
+#define mozilla_a11y_xpcAccessibleTextRange_h_
+
+#include <utility>
+
+#include "TextRange.h"
+#include "nsIAccessibleTextRange.h"
+#include "xpcAccessibleHyperText.h"
+
+namespace mozilla {
+namespace a11y {
+
+class TextRange;
+
+#define NS_ACCESSIBLETEXTRANGE_IMPL_IID              \
+  { /* 133c8bf4-4913-4355-bd50-426bd1d6e1ad */       \
+    0xb17652d9, 0x4f54, 0x4c56, {                    \
+      0xbb, 0x62, 0x6d, 0x5b, 0xf1, 0xef, 0x91, 0x0c \
+    }                                                \
+  }
+
+class xpcAccessibleTextRange final : public nsIAccessibleTextRange {
+ public:
+  explicit xpcAccessibleTextRange(TextRange& aRange) { SetRange(aRange); }
+
+  NS_DECL_ISUPPORTS
+
+  NS_IMETHOD GetStartContainer(nsIAccessibleText** aAnchor) final;
+  NS_IMETHOD GetStartOffset(int32_t* aOffset) final;
+  NS_IMETHOD GetEndContainer(nsIAccessibleText** aAnchor) final;
+  NS_IMETHOD GetEndOffset(int32_t* aOffset) final;
+  NS_IMETHOD GetContainer(nsIAccessible** aContainer) final;
+  NS_IMETHOD Compare(nsIAccessibleTextRange* aOtherRange, bool* aResult) final;
+  NS_IMETHOD CompareEndPoints(uint32_t aEndPoint,
+                              nsIAccessibleTextRange* aOtherRange,
+                              uint32_t aOtherRangeEndPoint,
+                              int32_t* aResult) final;
+  NS_IMETHOD Crop(nsIAccessible* aContainer, bool* aSuccess) final;
+
+  NS_DECLARE_STATIC_IID_ACCESSOR(NS_ACCESSIBLETEXTRANGE_IMPL_IID)
+
+ private:
+  xpcAccessibleTextRange() {}
+
+  ~xpcAccessibleTextRange() {}
+
+  friend class xpcAccessibleHyperText;
+
+  xpcAccessibleTextRange& operator=(const xpcAccessibleTextRange&) = delete;
+
+  void SetRange(TextRange& aRange);
+
+  TextRange Range();
+
+  // We can't hold a strong reference to an Accessible, but XPCOM needs strong
+  // references. Thus, instead of holding a TextRange here, we hold
+  // xpcAccessibleHyperText references and create the TextRange for each call
+  // using Range().
+  RefPtr<xpcAccessibleHyperText> mRoot;
+  RefPtr<xpcAccessibleHyperText> mStartContainer;
+  int32_t mStartOffset;
+  RefPtr<xpcAccessibleHyperText> mEndContainer;
+  int32_t mEndOffset;
+};
+
+NS_DEFINE_STATIC_IID_ACCESSOR(xpcAccessibleTextRange,
+                              NS_ACCESSIBLETEXTRANGE_IMPL_IID)
+
+}  // namespace a11y
+}  // namespace mozilla
+
+#endif