CefMessageRouterConfig();

// Name of the JavaScript function that will be added to the 'window' object

// for sending a query. The default value is "cefQuery".

CefString js_query_function;

// Name of the JavaScript function that will be added to the 'window' object

// for canceling a pending query. The default value is "cefQueryCancel".

CefString js_cancel_function;

: public base::RefCountedThreadSafe<CefMessageRouterBrowserSide> {

public:

///

// Callback associated with a single pending asynchronous query. Execute the

// Success or Failure method to send an asynchronous response to the

// associated JavaScript handler. It is a runtime error to destroy a Callback

// object associated with an uncanceled query without first executing one of

// the callback methods. The methods of this class may be called on any

// browser process thread.

///

class Callback : public CefBaseRefCounted {

public:

///

// Notify the associated JavaScript onSuccess callback that the query has

// completed successfully with the specified |response|.

///

virtual void Success(const CefString& response) = 0;

///

// Notify the associated JavaScript onFailure callback that the query has

// failed with the specified |error_code| and |error_message|.

///

virtual void Failure(int error_code, const CefString& error_message) = 0;

};

///

// Implement this interface to handle queries. All methods will be executed on

// the browser process UI thread.

///

class Handler {

public:

typedef CefMessageRouterBrowserSide::Callback Callback;

///

// Executed when a new query is received. |query_id| uniquely identifies the

// query for the life span of the router. Return true to handle the query

// or false to propagate the query to other registered handlers, if any. If

// no handlers return true from this method then the query will be

// automatically canceled with an error code of -1 delivered to the

// JavaScript onFailure callback. If this method returns true then a

// Callback method must be executed either in this method or asynchronously

// to complete the query.

///

virtual bool OnQuery(CefRefPtr<CefBrowser> browser,

CefRefPtr<CefFrame> frame,

int64 query_id,

const CefString& request,

bool persistent,

CefRefPtr<Callback> callback) {

return false;

}

///

// Executed when a query has been canceled either explicitly using the

// JavaScript cancel function or implicitly due to browser destruction,

// navigation or renderer process termination. It will only be called for

// the single handler that returned true from OnQuery for the same

// |query_id|. No references to the associated Callback object should be

// kept after this method is called, nor should any Callback methods be

// executed.

///

virtual void OnQueryCanceled(CefRefPtr<CefBrowser> browser,

CefRefPtr<CefFrame> frame,

int64 query_id) {}

virtual ~Handler() {}

};

///

// Create a new router with the specified configuration.

///

static CefRefPtr<CefMessageRouterBrowserSide> Create(

const CefMessageRouterConfig& config);

///

// Add a new query handler. If |first| is true it will be added as the first

// handler, otherwise it will be added as the last handler. Returns true if

// the handler is added successfully or false if the handler has already been

// added. Must be called on the browser process UI thread. The Handler object

// must either outlive the router or be removed before deletion.

///

virtual bool AddHandler(Handler* handler, bool first) = 0;

///

// Remove an existing query handler. Any pending queries associated with the

// handler will be canceled. Handler::OnQueryCanceled will be called and the

// associated JavaScript onFailure callback will be executed with an error

// code of -1. Returns true if the handler is removed successfully or false

// if the handler is not found. Must be called on the browser process UI

// thread.

///

virtual bool RemoveHandler(Handler* handler) = 0;

///

// Cancel all pending queries associated with either |browser| or |handler|.

// If both |browser| and |handler| are NULL all pending queries will be

// canceled. Handler::OnQueryCanceled will be called and the associated

// JavaScript onFailure callback will be executed in all cases with an error

// code of -1.

///

virtual void CancelPending(CefRefPtr<CefBrowser> browser,

Handler* handler) = 0;

///

// Returns the number of queries currently pending for the specified |browser|

// and/or |handler|. Either or both values may be empty. Must be called on the

// browser process UI thread.

///

virtual int GetPendingCount(CefRefPtr<CefBrowser> browser,

Handler* handler) = 0;

// The below methods should be called from other CEF handlers. They must be

// called exactly as documented for the router to function correctly.

///

// Call from CefLifeSpanHandler::OnBeforeClose. Any pending queries associated

// with |browser| will be canceled and Handler::OnQueryCanceled will be

// called. No JavaScript callbacks will be executed since this indicates

// destruction of the browser.

///

virtual void OnBeforeClose(CefRefPtr<CefBrowser> browser) = 0;

///

// Call from CefRequestHandler::OnRenderProcessTerminated. Any pending queries

// associated with |browser| will be canceled and Handler::OnQueryCanceled

// will be called. No JavaScript callbacks will be executed since this

// indicates destruction of the context.

///

virtual void OnRenderProcessTerminated(CefRefPtr<CefBrowser> browser) = 0;

///

// Call from CefRequestHandler::OnBeforeBrowse only if the navigation is

// allowed to proceed. If |frame| is the main frame then any pending queries

// associated with |browser| will be canceled and Handler::OnQueryCanceled

// will be called. No JavaScript callbacks will be executed since this

// indicates destruction of the context.

///

virtual void OnBeforeBrowse(CefRefPtr<CefBrowser> browser,

CefRefPtr<CefFrame> frame) = 0;

///

// Call from CefClient::OnProcessMessageReceived. Returns true if the message

// is handled by this router or false otherwise.

///

virtual bool OnProcessMessageReceived(

CefRefPtr<CefBrowser> browser,

CefProcessId source_process,

CefRefPtr<CefProcessMessage> message) = 0;

protected:

// Protect against accidental deletion of this object.

friend class base::RefCountedThreadSafe<CefMessageRouterBrowserSide>;

virtual ~CefMessageRouterBrowserSide() {}

: public base::RefCountedThreadSafe<CefMessageRouterRendererSide> {

public:

///

// Create a new router with the specified configuration.

///

static CefRefPtr<CefMessageRouterRendererSide> Create(

const CefMessageRouterConfig& config);

///

// Returns the number of queries currently pending for the specified |browser|

// and/or |context|. Either or both values may be empty.

///

virtual int GetPendingCount(CefRefPtr<CefBrowser> browser,

CefRefPtr<CefV8Context> context) = 0;

// The below methods should be called from other CEF handlers. They must be

// called exactly as documented for the router to function correctly.

///

// Call from CefRenderProcessHandler::OnContextCreated. Registers the

// JavaScripts functions with the new context.

///

virtual void OnContextCreated(CefRefPtr<CefBrowser> browser,

CefRefPtr<CefFrame> frame,

CefRefPtr<CefV8Context> context) = 0;

///

// Call from CefRenderProcessHandler::OnContextReleased. Any pending queries

// associated with the released context will be canceled and

// Handler::OnQueryCanceled will be called in the browser process.

///

virtual void OnContextReleased(CefRefPtr<CefBrowser> browser,

CefRefPtr<CefFrame> frame,

CefRefPtr<CefV8Context> context) = 0;

///

// Call from CefRenderProcessHandler::OnProcessMessageReceived. Returns true

// if the message is handled by this router or false otherwise.

///

virtual bool OnProcessMessageReceived(

CefRefPtr<CefBrowser> browser,

CefProcessId source_process,

CefRefPtr<CefProcessMessage> message) = 0;

protected:

// Protect against accidental deletion of this object.

friend class base::RefCountedThreadSafe<CefMessageRouterRendererSide>;

virtual ~CefMessageRouterRendererSide() {}