Introduce WebAccessibilityControllerImpl....

webkit/api/src/WebAccessibilityCacheImpl.h

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef WEBKIT_GLUE_WEBACCESSIBILITYMANAGER_IMPL_H_
-#define WEBKIT_GLUE_WEBACCESSIBILITYMANAGER_IMPL_H_
+#ifndef WebAccessibilityCacheImpl_h
+#define WebAccessibilityCacheImpl_h
 
-#include "base/hash_tables.h"
-#include "webkit/glue/webaccessibilitymanager.h"
+#include "WebAccessibilityCache.h"
+#include <wtf/HashMap.h>
+#include <wtf/RefPtr.h>
 
-class GlueAccessibilityObject;
+namespace WebCore {
+    class AccessibilityObjectWrapper;

[darin (slow to review), 2009/11/04 19:17:15]

nit: no indentation in namespaces now-a-days

[dglazkov, 2009/11/04 19:50:05]

Done.

+}
 
-////////////////////////////////////////////////////////////////////////////////
-//
-// WebAccessibilityManagerImpl
-//
-//
-// Implements WebAccessibilityManager.
-// Responds to incoming accessibility requests from the browser side. Retrieves
-// the requested information from the active AccessibilityObject, through the
-// GlueAccessibilityObject.
-////////////////////////////////////////////////////////////////////////////////
+namespace WebKit {
 
-namespace webkit_glue {
+class WebAccessibilityCacheImpl : public WebKit::WebAccessibilityCache {
+public:
+    virtual void initialize(WebView* view);
+    virtual bool isInitialized() const { return m_initialized; }
 
-class WebAccessibilityManagerImpl : public WebAccessibilityManager {
- public:
-  // From WebAccessibilityManager.
-  bool GetAccObjInfo(WebKit::WebView* view,
-                     const WebAccessibility::InParams& in_params,
-                     WebAccessibility::OutParams* out_params);
-  bool ClearAccObjMap(int acc_obj_id, bool clear_all);
-  int FocusAccObj(const WebKit::WebAccessibilityObject& object);
+    virtual WebAccessibilityObject getObjectById(int);
+    virtual bool isValidId(int) const;
+    virtual int addOrGetId(const WebKit::WebAccessibilityObject&);
 
- protected:
-  // Needed so WebAccessibilityManager::Create can call our constructor.
-  friend class WebAccessibilityManager;
+    virtual void remove(int);
+    virtual void clear();
 
-  // Constructor creates a new GlueAccessibilityObjectRoot, and initializes
-  // the root |acc_obj_id_| to 1000, to avoid conflicts with platform-specific
-  // child ids.
-  WebAccessibilityManagerImpl();
-  ~WebAccessibilityManagerImpl();
+protected:
+    friend class WebKit::WebAccessibilityCache;
 
- private:
-  // From WebAccessibilityManager.
-  bool InitAccObjRoot(WebKit::WebView* view);
+    WebAccessibilityCacheImpl();
+    ~WebAccessibilityCacheImpl();
 
-  // Wrapper around the pointer that holds the root of the AccessibilityObject
-  // tree, to allow the use of a scoped_refptr.
-  struct GlueAccessibilityObjectRoot;
-  GlueAccessibilityObjectRoot* root_;
+private:
+    // FIXME: This can be just part of Chromium's AccessibilityObjectWrapper.
+    class WeakHandle : public WebCore::AccessibilityObjectWrapper {
+    public:
+        static PassRefPtr<WeakHandle> create(WebCore::AccessibilityObject*);
+        virtual void detach();
+    private:
+        WeakHandle(WebCore::AccessibilityObject*);
+    };
 
-  typedef base::hash_map<int, GlueAccessibilityObject*> IntToGlueAccObjMap;
-  typedef base::hash_map<WebCore::AccessibilityObject*, int> AccObjToIntMap;
+    typedef HashMap<int, RefPtr<WeakHandle> > ObjectMap;
+    typedef HashMap<WebCore::AccessibilityObject*, int> IdMap;
 
-  // Hashmap for cashing of elements in use by the AT, mapping id (int) to a
-  // GlueAccessibilityObject pointer.
-  IntToGlueAccObjMap int_to_glue_acc_obj_map_;
-  // Hashmap for cashing of elements in use by the AT, mapping a
-  // AccessibilityObject pointer to its id (int). Needed for reverse lookup,
-  // to ensure unnecessary duplicate entries are not created in the
-  // IntToGlueAccObjMap (above) and for focus changes in WebKit.
-  AccObjToIntMap acc_obj_to_int_map_;
+    // Hashmap for caching of elements in use by the AT, mapping id (int) to
+    // WebAccessibilityObject.
+    ObjectMap m_objectMap;
+    // Hashmap for caching of elements in use by the AT, mapping a
+    // AccessibilityObject pointer to its id (int). Needed for reverse lookup,
+    // to ensure unnecessary duplicate entries are not created in the
+    // ObjectMap and for focus changes in WebKit.
+    IdMap m_idMap;
 
-  // Unique identifier for retrieving an accessibility object from the page's
-  // hashmaps. Id is always 0 for the root of the accessibility object
-  // hierarchy (on a per-renderer process basis).
-  int acc_obj_id_;
+    // Unique identifier for retrieving an accessibility object from the page's
+    // hashmaps. Id is always 0 for the root of the accessibility object
+    // hierarchy (on a per-renderer process basis).
+    int m_nextNewId;
 
-  DISALLOW_COPY_AND_ASSIGN(WebAccessibilityManagerImpl);
+    bool m_initialized;
 };
 
-}  // namespace webkit_glue
+}
 
-#endif  // WEBKIT_GLUE_WEBACCESSIBILITYMANAGER_IMPL_H_
+#endif