| // Copyright (c) 2012 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 CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_WIN_H_ |
| #define CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_WIN_H_ |
| |
| #include <oleacc.h> |
| |
| #include "base/memory/scoped_ptr.h" |
| #include "base/win/scoped_comptr.h" |
| #include "content/browser/accessibility/browser_accessibility_manager.h" |
| |
| namespace content { |
| class BrowserAccessibilityWin; |
| |
| // Manages a tree of BrowserAccessibilityWin objects. |
| class CONTENT_EXPORT BrowserAccessibilityManagerWin |
| : public BrowserAccessibilityManager { |
| public: |
| BrowserAccessibilityManagerWin( |
| const ui::AXTreeUpdate& initial_tree, |
| BrowserAccessibilityDelegate* delegate, |
| BrowserAccessibilityFactory* factory = new BrowserAccessibilityFactory()); |
| |
| virtual ~BrowserAccessibilityManagerWin(); |
| |
| static ui::AXTreeUpdate GetEmptyDocument(); |
| |
| // Get the closest containing HWND. |
| HWND GetParentHWND(); |
| |
| // The IAccessible for the parent window. |
| IAccessible* GetParentIAccessible(); |
| |
| // Calls NotifyWinEvent if the parent window's IAccessible pointer is known. |
| void MaybeCallNotifyWinEvent(DWORD event, LONG child_id); |
| |
| // AXTree methods |
| virtual void OnNodeWillBeDeleted(ui::AXNode* node) OVERRIDE; |
| virtual void OnNodeCreated(ui::AXNode* node) OVERRIDE; |
| |
| // BrowserAccessibilityManager methods |
| virtual void OnWindowFocused() OVERRIDE; |
| virtual void NotifyAccessibilityEvent( |
| ui::AXEvent event_type, BrowserAccessibility* node) OVERRIDE; |
| |
| // Track this object and post a VISIBLE_DATA_CHANGED notification when |
| // its container scrolls. |
| // TODO(dmazzoni): remove once http://crbug.com/113483 is fixed. |
| void TrackScrollingObject(BrowserAccessibilityWin* node); |
| |
| // Return a pointer to the object corresponding to the given windows-specific |
| // unique id, does not make a new reference. |
| BrowserAccessibilityWin* GetFromUniqueIdWin(LONG unique_id_win); |
| |
| // Called when |accessible_hwnd_| is deleted by its parent. |
| void OnAccessibleHwndDeleted(); |
| |
| protected: |
| // BrowserAccessibilityManager methods |
| virtual void OnRootChanged(ui::AXNode* new_root) OVERRIDE; |
| |
| private: |
| // Give BrowserAccessibilityManager::Create access to our constructor. |
| friend class BrowserAccessibilityManager; |
| |
| // Track the most recent object that has been asked to scroll and |
| // post a notification directly on it when it reaches its destination. |
| // TODO(dmazzoni): remove once http://crbug.com/113483 is fixed. |
| BrowserAccessibilityWin* tracked_scroll_object_; |
| |
| // A mapping from the Windows-specific unique IDs (unique within the |
| // browser process) to accessibility ids within this page. |
| base::hash_map<long, int32> unique_id_to_ax_id_map_; |
| |
| // Set to true if we need to fire a focus event on the root as soon as |
| // possible. |
| bool focus_event_on_root_needed_; |
| |
| DISALLOW_COPY_AND_ASSIGN(BrowserAccessibilityManagerWin); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_WIN_H_ |