public:

typedef cef_navigation_type_t NavigationType;

///

/// Called after WebKit has been initialized.

///

/*--cef()--*/

virtual void OnWebKitInitialized() {}

///

/// Called after a browser has been created. When browsing cross-origin a new

/// browser will be created before the old browser with the same identifier is

/// destroyed. |extra_info| is an optional read-only value originating from

/// CefBrowserHost::CreateBrowser(), CefBrowserHost::CreateBrowserSync(),

/// CefLifeSpanHandler::OnBeforePopup() or

/// CefBrowserView::CreateBrowserView().

///

/*--cef(optional_param=extra_info)--*/

virtual void OnBrowserCreated(CefRefPtr<CefBrowser> browser,

CefRefPtr<CefDictionaryValue> extra_info) {}

///

/// Called before a browser is destroyed.

///

/*--cef()--*/

virtual void OnBrowserDestroyed(CefRefPtr<CefBrowser> browser) {}

///

/// Return the handler for browser load status events.

///

/*--cef()--*/

virtual CefRefPtr<CefLoadHandler> GetLoadHandler() { return nullptr; }

///

/// Called immediately after the V8 context for a frame has been created. To

/// retrieve the JavaScript 'window' object use the CefV8Context::GetGlobal()

/// method. V8 handles can only be accessed from the thread on which they are

/// created. A task runner for posting tasks on the associated thread can be

/// retrieved via the CefV8Context::GetTaskRunner() method.

///

/*--cef()--*/

virtual void OnContextCreated(CefRefPtr<CefBrowser> browser,

CefRefPtr<CefFrame> frame,

CefRefPtr<CefV8Context> context) {}

///

/// Called immediately before the V8 context for a frame is released. No

/// references to the context should be kept after this method is called.

///

/*--cef()--*/

virtual void OnContextReleased(CefRefPtr<CefBrowser> browser,

CefRefPtr<CefFrame> frame,

CefRefPtr<CefV8Context> context) {}

///

/// Called for global uncaught exceptions in a frame. Execution of this

/// callback is disabled by default. To enable set

/// cef_settings_t.uncaught_exception_stack_size > 0.

///

/*--cef()--*/

virtual void OnUncaughtException(CefRefPtr<CefBrowser> browser,

CefRefPtr<CefFrame> frame,

CefRefPtr<CefV8Context> context,

CefRefPtr<CefV8Exception> exception,

CefRefPtr<CefV8StackTrace> stackTrace) {}

///

/// Called when a new node in the the browser gets focus. The |node| value may

/// be empty if no specific node has gained focus. The node object passed to

/// this method represents a snapshot of the DOM at the time this method is

/// executed. DOM objects are only valid for the scope of this method. Do not

/// keep references to or attempt to access any DOM objects outside the scope

/// of this method.

///

/*--cef(optional_param=frame,optional_param=node)--*/

virtual void OnFocusedNodeChanged(CefRefPtr<CefBrowser> browser,

CefRefPtr<CefFrame> frame,

CefRefPtr<CefDOMNode> node) {}

///

/// Called when a new message is received from a different process. Return

/// true if the message was handled or false otherwise. It is safe to keep a

/// reference to |message| outside of this callback.

///

/*--cef()--*/

virtual bool OnProcessMessageReceived(CefRefPtr<CefBrowser> browser,

CefRefPtr<CefFrame> frame,

CefProcessId source_process,

CefRefPtr<CefProcessMessage> message) {

return false;

}