1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_WIN_H_ 6 #define CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_WIN_H_ 7 8 #include <oleacc.h> 9 10 #include "base/win/scoped_comptr.h" 11 #include "content/browser/accessibility/browser_accessibility_manager.h" 12 13 namespace content { 14 class BrowserAccessibilityWin; 15 16 // Manages a tree of BrowserAccessibilityWin objects. 17 class CONTENT_EXPORT BrowserAccessibilityManagerWin 18 : public BrowserAccessibilityManager { 19 public: 20 BrowserAccessibilityManagerWin( 21 HWND parent_hwnd, 22 IAccessible* parent_iaccessible, 23 const AccessibilityNodeData& src, 24 BrowserAccessibilityDelegate* delegate, 25 BrowserAccessibilityFactory* factory = new BrowserAccessibilityFactory()); 26 27 virtual ~BrowserAccessibilityManagerWin(); 28 29 static AccessibilityNodeData GetEmptyDocument(); 30 31 // Get the closest containing HWND. 32 HWND parent_hwnd() { return parent_hwnd_; } 33 34 // The IAccessible for the parent window. 35 IAccessible* parent_iaccessible() { return parent_iaccessible_; } 36 void set_parent_iaccessible(IAccessible* parent_iaccessible) { 37 parent_iaccessible_ = parent_iaccessible; 38 } 39 40 // Calls NotifyWinEvent if the parent window's IAccessible pointer is known. 41 void MaybeCallNotifyWinEvent(DWORD event, LONG child_id); 42 43 // BrowserAccessibilityManager methods 44 virtual void AddNodeToMap(BrowserAccessibility* node); 45 virtual void RemoveNode(BrowserAccessibility* node) OVERRIDE; 46 virtual void NotifyAccessibilityEvent(int type, BrowserAccessibility* node) 47 OVERRIDE; 48 49 // Track this object and post a VISIBLE_DATA_CHANGED notification when 50 // its container scrolls. 51 // TODO(dmazzoni): remove once http://crbug.com/113483 is fixed. 52 void TrackScrollingObject(BrowserAccessibilityWin* node); 53 54 // Return a pointer to the object corresponding to the given windows-specific 55 // unique id, does not make a new reference. 56 BrowserAccessibilityWin* GetFromUniqueIdWin(LONG unique_id_win); 57 58 private: 59 // The closest ancestor HWND. 60 HWND parent_hwnd_; 61 62 // The accessibility instance for the parent window. 63 IAccessible* parent_iaccessible_; 64 65 // Give BrowserAccessibilityManager::Create access to our constructor. 66 friend class BrowserAccessibilityManager; 67 68 // Track the most recent object that has been asked to scroll and 69 // post a notification directly on it when it reaches its destination. 70 // TODO(dmazzoni): remove once http://crbug.com/113483 is fixed. 71 BrowserAccessibilityWin* tracked_scroll_object_; 72 73 // A mapping from the Windows-specific unique IDs (unique within the 74 // browser process) to renderer ids within this page. 75 base::hash_map<long, int32> unique_id_to_renderer_id_map_; 76 77 DISALLOW_COPY_AND_ASSIGN(BrowserAccessibilityManagerWin); 78 }; 79 80 } // namespace content 81 82 #endif // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_WIN_H_ 83
