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diff --git a/Source/WebCore/accessibility/AXTextStateChangeIntent.h b/Source/WebCore/accessibility/AXTextStateChangeIntent.h
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+/*
+ * Copyright (C) 2015 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+namespace WebCore {
+    
+enum AXTextStateChangeType {
+    AXTextStateChangeTypeUnknown,
+    AXTextStateChangeTypeEdit,
+    AXTextStateChangeTypeSelectionMove,
+    AXTextStateChangeTypeSelectionExtend,
+    AXTextStateChangeTypeSelectionBoundary
+};
+
+enum AXTextEditType {
+    AXTextEditTypeUnknown,
+    AXTextEditTypeDelete, // Generic text delete
+    AXTextEditTypeInsert, // Generic text insert
+    AXTextEditTypeTyping, // Insert via typing
+    AXTextEditTypeDictation, // Insert via dictation
+    AXTextEditTypeCut, // Delete via Cut
+    AXTextEditTypePaste, // Insert via Paste
+    AXTextEditTypeAttributesChange // Change font, style, alignment, color, etc.
+};
+
+enum AXTextSelectionDirection {
+    AXTextSelectionDirectionUnknown,
+    AXTextSelectionDirectionBeginning,
+    AXTextSelectionDirectionEnd,
+    AXTextSelectionDirectionPrevious,
+    AXTextSelectionDirectionNext,
+    AXTextSelectionDirectionDiscontiguous
+};
+
+enum AXTextSelectionGranularity {
+    AXTextSelectionGranularityUnknown,
+    AXTextSelectionGranularityCharacter,
+    AXTextSelectionGranularityWord,
+    AXTextSelectionGranularityLine,
+    AXTextSelectionGranularitySentence,
+    AXTextSelectionGranularityParagraph,
+    AXTextSelectionGranularityPage,
+    AXTextSelectionGranularityDocument,
+    AXTextSelectionGranularityAll // All granularity represents the action of selecting the whole document as a single action. Extending selection by some other granularity until it encompasses the whole document will not result in a all granularity notification.
+};
+
+struct AXTextSelection {
+    AXTextSelectionDirection direction;
+    AXTextSelectionGranularity granularity;
+    bool focusChange;
+};
+
+struct AXTextStateChangeIntent {
+    AXTextStateChangeType type;
+    union {
+        AXTextSelection selection;
+        AXTextEditType change;
+    };
+
+    AXTextStateChangeIntent(AXTextStateChangeType type = AXTextStateChangeTypeUnknown, AXTextSelection selection = AXTextSelection())
+        : type(type)
+        , selection(selection)
+    { }
+
+    AXTextStateChangeIntent(AXTextEditType change)
+        : type(AXTextStateChangeTypeEdit)
+        , change(change)
+    { }
+};
+
+} // namespace WebCore