| // Copyright 2013 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_TEST_ACCESSIBILITY_BROWSER_TEST_UTILS_H_ |
| #define CONTENT_TEST_ACCESSIBILITY_BROWSER_TEST_UTILS_H_ |
| |
| #include "base/memory/weak_ptr.h" |
| #include "content/common/view_message_enums.h" |
| #include "ui/accessibility/ax_node_data.h" |
| #include "ui/accessibility/ax_tree.h" |
| |
| namespace content { |
| |
| class MessageLoopRunner; |
| class RenderViewHostImpl; |
| class Shell; |
| |
| // Create an instance of this class *before* doing any operation that |
| // might generate an accessibility event (like a page navigation or |
| // clicking on a button). Then call WaitForNotification |
| // afterwards to block until the specified accessibility notification has been |
| // received. |
| class AccessibilityNotificationWaiter { |
| public: |
| explicit AccessibilityNotificationWaiter(Shell* shell); |
| |
| AccessibilityNotificationWaiter( |
| Shell* shell, |
| AccessibilityMode accessibility_mode, |
| ui::AXEvent event); |
| ~AccessibilityNotificationWaiter(); |
| |
| // Blocks until the specific accessibility notification registered in |
| // AccessibilityNotificationWaiter is received. Ignores notifications for |
| // "about:blank". |
| void WaitForNotification(); |
| |
| // After WaitForNotification has returned, this will retrieve |
| // the tree of accessibility nodes received from the renderer process. |
| const ui::AXTree& GetAXTree() const; |
| |
| // After WaitForNotification returns, use this to retrieve the id of the |
| // node that was the target of the event. |
| int event_target_id() { return event_target_id_; } |
| |
| private: |
| // Callback from RenderViewHostImpl. |
| void OnAccessibilityEvent(ui::AXEvent event, int event_target_id); |
| |
| // Helper function to determine if the accessibility tree in |
| // GetAXTree() is about the page with the url "about:blank". |
| bool IsAboutBlank(); |
| |
| Shell* shell_; |
| RenderViewHostImpl* view_host_; |
| ui::AXEvent event_to_wait_for_; |
| scoped_refptr<MessageLoopRunner> loop_runner_; |
| base::WeakPtrFactory<AccessibilityNotificationWaiter> weak_factory_; |
| int event_target_id_; |
| |
| DISALLOW_COPY_AND_ASSIGN(AccessibilityNotificationWaiter); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_TEST_ACCESSIBILITY_BROWSER_TEST_UTILS_H_ |