Expose InlineTextBoxes in the accessibility tree.

Source/core/accessibility/AccessibilityInlineTextBox.h

+/*
+ * Copyright (C) 2013, Google 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.
+ * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
+ *     its contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 OR ITS 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.
+ */
+
+#ifndef AccessibilityInlineTextBox_h
+#define AccessibilityInlineTextBox_h
+
+#include "AccessibilityObject.h"
+#include "wtf/Forward.h"
+
+namespace WebCore {
+
+class AccessibilityInlineTextBox : public AccessibilityObject {
+
+private:
+    AccessibilityInlineTextBox(InlineTextBox*);
+public:
+    static PassRefPtr<AccessibilityInlineTextBox> create(InlineTextBox*);
+    virtual ~AccessibilityInlineTextBox();
+
+    virtual void init();
+    virtual void detach();
+
+    void setInlineTextBox(InlineTextBox* inlineTextBox) { m_inlineTextBox = inlineTextBox; }
+
+    virtual AccessibilityRole roleValue() const { return InlineTextBoxRole; }
+    virtual String stringValue() const;
+    virtual void textCharacterOffsets(Vector<int>&) const;
+    virtual void wordBoundaries(Vector<int>& starts, Vector<int>& ends) const;
+    virtual LayoutRect elementRect() const;
+    virtual AccessibilityObject* parentObject() const;
+    bool isInlineTextBox() const { return true; }
+
+private:
+    InlineTextBox* m_inlineTextBox;
+
+    virtual bool computeAccessibilityIsIgnored() const;
+};
+
+} // namespace WebCore
+
+#endif // AccessibilityInlineTextBox_h