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Implement accessibility enhancements (issue #1217)

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- Add new CefBrowserHost::SetAccessibilityState method for toggling
  accessibility state when readers are detected by the client.
- Add new CefAccessibilityHandler interface for the delivery of
  accessibility notifications to windowless (OSR) clients.
- Fix delivery of CefFocusHandler callbacks to windowless clients.
- cefclient: Add example windowless accessibility implementation on Windows and macOS.
- cefclient: Automatically detect screen readers on Windows and macOS.
This commit is contained in:
Nishant Kaushik
2017-05-12 18:28:25 +00:00
committed by Marshall Greenblatt
parent 64fcfa6068
commit 816f700d3e
51 changed files with 3476 additions and 8 deletions
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8
libcef/browser/browser_host_impl.h
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@ -229,6 +229,7 @@ class CefBrowserHostImpl : public CefBrowserHost,
void DragSourceSystemDragEnded() override;
void DragSourceEndedAt(int x, int y, DragOperationsMask op) override;
CefRefPtr<CefNavigationEntry> GetVisibleNavigationEntry() override;
void SetAccessibilityState(cef_state_t accessibility_state) override;
// CefBrowser methods.
CefRefPtr<CefBrowserHost> GetHost() override;
@ -471,6 +472,13 @@ class CefBrowserHostImpl : public CefBrowserHost,
void DidUpdateFaviconURL(
const std::vector<content::FaviconURL>& candidates) override;
bool OnMessageReceived(const IPC::Message& message) override;
void AccessibilityEventReceived(
const std::vector<content::AXEventNotificationDetails>& eventData)
override;
void AccessibilityLocationChangesReceived(
const std::vector<content::AXLocationChangeNotificationDetails>& locData)
override;
void OnWebContentsFocused() override;
// Override to provide a thread safe implementation.
bool Send(IPC::Message* message) override;